:root {
  /* Core Palette - Deep & Premium */
  --bg: #121212;
  /* Very deep charcoal/black */
  --bg-secondary: #191919;
  /* Slightly lighter for cards */
  --bg-tertiary: #27272a;
  /* For hover states */

  /* Text */
  --text: #f4f4f5;
  /* Almost white */
  --text-secondary: #a1a1aa;
  /* Neutral gray */
  --text-muted: #71717a;
  /* Darker gray */

  /* Accents - Subtle & Sophisticated */
  --accent: #ffffff;
  --accent-glow: rgba(255, 255, 255, 0.15);
  --border: rgba(255, 255, 255, 0.08);
  --border-hover: rgba(255, 255, 255, 0.15);

  /* Dimensions */
  --radius: 24px;
  --radius-sm: 12px;
  --navbar-offset: 50px;
  --content-width: 1400px;

  font-family: "Inter", -apple-system, BlinkMacSystemFont, sans-serif;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: "Inter", sans-serif;
  -webkit-font-smoothing: antialiased;
  line-height: 1.6;
  overflow-x: hidden;
}

/* Toasts */
.toast-container {
  position: fixed;
  top: calc(var(--navbar-offset) + 1rem);
  right: 1rem;
  z-index: 10000;
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
  max-width: min(420px, calc(100vw - 2rem));
  pointer-events: none;
}

.toast {
  pointer-events: auto;
  padding: 0.75rem 0.95rem;
  border-radius: 16px;
  background: rgba(20, 20, 20, 0.85);
  border: 1px solid rgba(255, 255, 255, 0.08);
  color: #fff;
  box-shadow: 0 20px 45px rgba(0, 0, 0, 0.35);
  transform: translateY(-6px);
  opacity: 0;
  transition: opacity 0.2s ease, transform 0.2s ease;
  backdrop-filter: blur(8px);
  font-size: 0.95rem;
  line-height: 1.35;
}

.toast.is-visible {
  opacity: 1;
  transform: translateY(0);
}

.toast--success {
  border-color: rgba(60, 210, 134, 0.25);
  background: rgba(6, 48, 30, 0.78);
}

.toast--error {
  border-color: rgba(255, 78, 78, 0.25);
  background: rgba(50, 10, 10, 0.78);
}

/* Smooth Scrolling */
html {
  scroll-behavior: smooth;
}

.page-content {
  max-width: var(--content-width);
  margin: 0 auto;
  padding: calc(var(--navbar-offset) + 10px) 2rem 4rem;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* Button Reset & Base */
/* Button Reset & Base */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 999px;
  border: 0px solid var(--border);
  padding: 0.75rem 1.5rem;
  font-weight: 500;
  font-size: 0.95rem;
  line-height: 1;
  cursor: pointer;
  color: var(--text);
  background: rgba(255, 255, 255, 0.03);
  text-decoration: none;
  transition: background 0.2s ease, color 0.2s ease, border-color 0.2s ease;
  gap: 0.5rem;
  box-shadow: none;
  transform: none;
  width: auto
}

.btn:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: var(--border-hover);
  transform: none;
  box-shadow: none;
}

.btn.primary {
  background: #fff;
  color: #000;
  border-color: #fff;
  font-weight: 600;
}

.btn.primary:hover {
  background: #e4e4e7;
  border-color: #e4e4e7;
  transform: none;
  box-shadow: none;
}

.btn.ghost {
  background: transparent;
  border-color: transparent;
  color: var(--text-secondary);
}

.btn.ghost:hover {
  background: rgba(255, 255, 255, 0.05);
  color: var(--text);
  border-color: var(--border);
}

.btn.danger {
  color: #ef4444;
  border-color: rgba(239, 68, 68, 0.2);
  background: rgba(239, 68, 68, 0.05);
}

.btn.danger:hover {
  background: rgba(239, 68, 68, 0.1);
  border-color: #ef4444;
  color: #f87171;
}

.btn-small,
.btn.btn-small {
  padding: 0.5rem 1rem;
  font-size: 0.85rem;
}

.filter-btn,
.side-btn,
.sort-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 0px solid var(--border);
  border-radius: 999px;
  padding: 0.6rem 1.25rem;
  background: rgba(255, 255, 255, 0.02);
  color: var(--text-secondary);
  font-weight: 500;
  font-size: 0.9rem;
  cursor: pointer;
  transition: background 0.2s ease, color 0.2s ease, border-color 0.2s ease;
  text-decoration: none;
  box-shadow: none;
  transform: none;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
}

.filter-btn:hover,
.filter-btn.active,
.side-btn:hover,
.side-btn.active,
.sort-btn:hover,
.sort-btn.active {
  background: #fff;
  color: #000;
  border-color: #fff;
  font-weight: 500;
  box-shadow: none;
  transform: none;
}

/* Hero Section */
.hero {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  padding: 4rem 0 2rem;
  position: relative;
  animation: fade-in-up 0.8s cubic-bezier(0.16, 1, 0.3, 1) forwards;
  z-index: 10;
}

@keyframes fade-in-up {
  from {
    opacity: 0;
    transform: translateY(20px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.hero-content {
  max-width: 800px;
  width: 100%;
  z-index: 2;
}

.hero-title {
  font-size: 3rem;
  font-weight: 700;
  line-height: 1.1;
  margin: 0 0 2rem;
  background: linear-gradient(135deg, #fff 0%, #a1a1aa 100%);
  background-clip: text;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  letter-spacing: -0.02em;
}

.hero-subtitle {
  font-size: 1.25rem;
  color: var(--text-secondary);
  margin: 0 0 3rem;
  font-weight: 400;
}

/* Search */
.search-container {
  width: 100%;
  max-width: 640px;
  margin: 0 auto 2.5rem;
  position: relative;
}

.search-wrapper {
  position: relative;
  width: 100%;
}

.search-input {
  width: 100%;
  padding: 1rem 1.5rem 1rem 3.5rem;
  border-radius: var(--radius);
  border: 0px solid var(--border);
  background: rgba(255, 255, 255, 0.03);
  color: var(--text);
  font-size: 1rem;
  transition: all 0.3s ease;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
}

.search-input:focus {
  outline: none;
  background: rgba(255, 255, 255, 0.05);
  box-shadow: 0 0 0 4px rgba(255, 255, 255, 0.05);
}

.search-icon {
  position: absolute;
  left: 1.25rem;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-muted);
  font-size: 1.2rem;
  pointer-events: none;
  transition: color 0.3s ease;
}

.search-input:focus+.search-icon {
  color: var(--text);
}

/* Clear-text button (×) inside the search input */
.search-clear {
  position: absolute;
  right: 0.9rem;
  top: 50%;
  transform: translateY(-50%);
  width: 28px;
  height: 28px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: none;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.08);
  color: var(--text-muted);
  cursor: pointer;
  font-size: 0.9rem;
  transition: background 0.15s ease, color 0.15s ease;
  padding: 0;
}

.search-clear:hover {
  background: rgba(255, 255, 255, 0.15);
  color: var(--text);
}

.search-clear[hidden] {
  display: none !important;
}

/* Reserve space on the right when clear is visible so the text doesn't
   slide under the button. */
.search-wrapper:has(.search-clear:not([hidden])) .search-input {
  padding-right: 3rem;
}

/* Filters */
.filter-container {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
  flex-wrap: wrap;
}



.filter-select-group {
  position: relative;
  min-width: 220px;
}

.filter-select-toggle {
  width: 100%;
  /* Inherit visual styles from .filter-btn */
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 0.5rem;
  padding: 0.55rem 1.4rem;
  /* Keep original padding for layout */
}

.filter-select-toggle::after {
  content: "▾";
  font-size: 0.8rem;
  color: var(--text-secondary);
  transition: transform 0.2s ease;
}

.filter-select-toggle.is-open::after {
  transform: rotate(180deg);
}

.filter-select-dropdown {
  position: absolute;
  top: calc(100% + 8px);
  left: 0;
  right: 0;
  background: #0f0f0f;
  border-radius: 18px;
  border: 0px solid rgba(255, 255, 255, 0.08);
  padding: 0.4rem;
  display: grid;
  gap: 0.35rem;
  z-index: 10;
  max-height: 250px;
  overflow-y: auto;
}

.filter-select-dropdown[hidden] {
  display: none;
}

.filter-select-dropdown button {
  background: transparent;
  border: none;
  text-align: left;
  padding: 0.45rem 0.75rem;
  border-radius: 12px;
  color: var(--text-secondary);
  font-weight: 600;
  cursor: pointer;
}

.filter-select-dropdown button:hover,
.filter-select-dropdown button.is-active {
  background: rgba(255, 255, 255, 0.08);
  color: #fff;
}

.speciality-field {
  display: flex;
  flex-direction: column;
  gap: 0.8rem;
}

.speciality-picker {
  position: relative;
  width: 100%;
}

.speciality-picker__control {
  width: 100%;
  border-radius: 999px;
  border: 0px solid #2b2b2b;
  background: var(--bg-secondary);
  color: var(--text-secondary);
  padding: 0.55rem 1.4rem;
  font-weight: 600;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 0.5rem;
  cursor: pointer;
  transition: background 0.2s ease, color 0.2s ease;
}

.speciality-picker.is-open .speciality-picker__control {
  background: rgba(255, 255, 255, 0.08);
  color: #fff;
}

.speciality-picker__control:focus-visible {
  outline: 2px solid rgba(255, 255, 255, 0.4);
  outline-offset: 2px;
}

.speciality-picker__chevron {
  font-size: 0.85rem;
  color: var(--text-secondary);
  transition: transform 0.2s ease;
}

.speciality-picker.is-open .speciality-picker__chevron {
  transform: rotate(180deg);
}

.speciality-picker__dropdown {
  position: absolute;
  top: calc(100% + 10px);
  left: 0;
  right: 0;
  background: #0f0f0f;
  border-radius: 20px;
  border: 0px solid rgba(255, 255, 255, 0.08);
  padding: 0.6rem;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  max-height: 320px;
  min-height: 180px;
  overflow: hidden;
  z-index: 20;
  box-shadow: 0 18px 40px rgba(0, 0, 0, 0.45);
}

.speciality-picker__dropdown[hidden] {
  display: none;
}

.speciality-picker__search {
  width: 100%;
  border-radius: 12px;
  border: 0px solid rgba(255, 255, 255, 0.1);
  background: rgba(255, 255, 255, 0.02);
  color: #fff;
  padding: 0.5rem 0.9rem;
}

.speciality-picker__list {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  overflow-y: auto;
  padding-right: 0.2rem;
}

.speciality-option {
  border: none;
  background: transparent;
  border-radius: 14px;
  padding: 0.55rem 0.75rem;
  text-align: left;
  color: var(--text-secondary);
  font-weight: 600;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 0.5rem;
  cursor: pointer;
  transition: background 0.2s ease, color 0.2s ease;
}

.speciality-option:hover {
  background: rgba(255, 255, 255, 0.06);
}

.speciality-option.is-selected {
  background: rgba(255, 255, 255, 0.12);
  color: #fff;
}

.speciality-option__check {
  font-size: 0.85rem;
  color: #6ee7b7;
}

.speciality-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
}

.speciality-tags[hidden] {
  display: none;
}

.speciality-tag {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.25rem 0.75rem;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.08);
  color: #fff;
  font-size: 0.85rem;
}

.speciality-tag__remove {
  border: none;
  background: none;
  color: inherit;
  cursor: pointer;
  font-size: 0.85rem;
}

.speciality-empty {
  padding: 1rem 0.5rem;
  color: rgba(255, 255, 255, 0.5);
  text-align: center;
  font-size: 0.9rem;
}


.main {
  padding: 1.2rem 0 2rem;
}

.section-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
  margin-bottom: 1rem;
  margin-top: 40px;
}

.section-head h2 {
  margin: 0;
}

.section-head p {
  margin: 0.25rem 0 0;
  color: var(--text-secondary);
}

/* Video Grid & Cards */
.video-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 2rem;
  padding-top: 1rem;
  animation: fade-in 0.6s ease-out forwards;
  animation-delay: 0.2s;
  opacity: 0;
}

@keyframes fade-in {
  from {
    opacity: 0;
  }

  to {
    opacity: 1;
  }
}

.video-card {
  cursor: pointer;
  transition: all 0.3s cubic-bezier(0.25, 0.1, 0.25, 1);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  position: relative;
}


.video-card:hover .video-thumb img {
  transform: scale(1.02);
}

.video-thumb {
  background-color: #000;
  aspect-ratio: 16/9;
  position: relative;
  overflow: hidden;
  width: 100%;
  border-radius: var(--radius);
}

.video-info {
  display: flex;
  flex-direction: column;
  gap: 3px;
  padding: 15px 5px;
  flex: 1;
}

.video-info .title {
  font-size: 1.1rem;
  font-weight: 600;
  line-height: 1.4;
  color: var(--text);
  display: -webkit-box;
  line-clamp: 2;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.video-info .channel {
  font-size: 0.85rem;
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.video-course-tag {
  font-size: 0.82rem;
  color: #71717a;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.duration,
.pill {
  position: absolute;
  bottom: 0.75rem;
  right: 0.75rem;
  background: rgba(0, 0, 0, 0.75);
  backdrop-filter: blur(4px);
  color: #fff;
  padding: 0.25rem 0.6rem;
  border-radius: 6px;
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.02em;
  z-index: 2;
}

.watched-badge {
  position: absolute;
  top: 0.75rem;
  left: 0.75rem;
  background: rgb(152 152 152 / 90%);
  backdrop-filter: blur(4px);
  color: #fff;
  padding: 0.25rem 0.6rem;
  border-radius: 13px;
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  z-index: 2;
  text-transform: uppercase;
}

.pill {
  left: 0.75rem;
  right: auto;
  background: rgba(255, 255, 255, 0.9);
  color: #000;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-size: 0.7rem;
}

.course-card {
  position: relative;
}

.course-card .video-thumb,
.course-card .video-info {
  position: relative;
  z-index: 1;
}

.video-thumb {
  background-color: #2a2a2a;
  aspect-ratio: 16/9;
  position: relative;
  overflow: hidden;
}

.video-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform 0.3s ease;
}


/* Skeleton Loading */
.skeleton {
  background: linear-gradient(90deg, #2a2a2a 25%, #3a3a3a 50%, #2a2a2a 75%);
  background-size: 200% 100%;
  animation: skeleton-loading 1.5s infinite;
}

@keyframes skeleton-loading {
  0% {
    background-position: 200% 0;
  }

  100% {
    background-position: -200% 0;
  }
}

.skeleton-card {
  background: #1e1e1e;
  border-radius: 22px;
  border: 0px solid rgba(255, 255, 255, 0.05);
  overflow: hidden;
}

.skeleton-thumb {
  aspect-ratio: 16/9;
  width: 100%;
}

.skeleton-info {
  padding: 0.9rem;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.skeleton-text {
  height: 1rem;
  border-radius: 4px;
  margin-bottom: 0.25rem;
}

.skeleton-text.title {
  height: 1.2rem;
  width: 80%;
}

.skeleton-text.meta {
  width: 60%;
}

.duration,
.pill {
  position: absolute;
  bottom: 0.5rem;
  right: 0.5rem;
  background: rgba(0, 0, 0, 0.65);
  color: #fff;
  padding: 0.2rem 0.6rem;
  border-radius: 6px;
  font-size: 0.75rem;
}

.pill {
  left: 0.5rem;
  right: auto;
  background: #ff5f5f;
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

.thumb-progress {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: rgba(255, 255, 255, 0.2);
  z-index: 5;
}

.thumb-progress-fill {
  height: 100%;
  background: #121212;
}

.video-info .title {
  font-size: 0.98rem;
  font-weight: 600;
}

/* Admin-only ✓ біля назв перевірених лекцій (рендериться у js/index.js
   тільки якщо DoctrinaAdmins.isAdmin() — див. admin-config.js). Зелений
   іконковий тік, в одну лінію з останнім словом назви. */
.video-verified-tick {
  color: #4ade80;
  font-size: 0.85em;
  margin-left: 0.25rem;
  vertical-align: baseline;
}

.video-info .channel,
.video-info .meta {
  font-size: 0.72rem;
  color: var(--text-secondary);
}

.video-info .channel {
  transition: color 0.2s ease;
}

.video-info .channel a {
  color: inherit;
  text-decoration: none;
}

.video-info .channel:hover {
  color: #fff;
}

@media (max-width: 720px) {
  .page-content {
    padding: calc(var(--navbar-offset) + 0.5rem) 1rem 2rem;
  }
}

/* Dashboard and forms */
.dashboard {
  max-width: 1100px;
  margin: 0 auto;
}

.dashboard__head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
  margin-bottom: 1.5rem;
}

.dashboard__head h1 {
  margin: 0;
}

.dashboard__head p {
  margin: 0.3rem 0 0;
  color: var(--text-secondary);
}

.dashboard__stats {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
  margin-bottom: 1rem;
}

.dashboard__filters {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-bottom: 1rem;
}

.filter-buttons {
  display: flex;
  gap: 0.5rem;
}



.stats-card {
  flex: 1 1 180px;
  background: var(--bg-secondary);
  border: 0px solid rgba(255, 255, 255, 0.05);
  border-radius: 18px;
  padding: 1rem;
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.stats-card strong {
  font-size: 1.8rem;
}

.stats-card span {
  color: var(--text-secondary);
  font-size: 0.9rem;
}

.dashboard__actions {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.btn-small {
  padding: 0.4rem 0.9rem;
  font-size: 0.85rem;
}

.btn.danger {
  border-color: rgba(255, 94, 94, 0.5);
  color: #ff6c6c;
}

.notice {
  border-radius: 16px;
  padding: 1rem 1.25rem;
  margin-bottom: 1.5rem;
  font-size: 0.95rem;
}

.notice.danger {
  background: rgba(255, 78, 78, 0.1);
  color: #ff8383;
}

.notice.success {
  background: rgba(60, 210, 134, 0.12);
  color: #63e6a9;
}

.empty-state {
  text-align: center;
  color: var(--text-secondary);
  margin-top: 2rem;
}

.grid-empty {
  text-align: center;
  color: var(--text-secondary);
  margin-top: 1.5rem;
}

.manage-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 1rem;
}


.course-manage-grid {
  display: grid;
  gap: 1rem;
}

.course-manage-card {
  border-radius: 20px;
  border: 0px solid rgba(255, 255, 255, 0.08);
  background: #151515;
  padding: 1rem 1.2rem;
}

.course-manage-card__body {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  align-items: center;
}

.course-manage-card__actions {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.course-modal {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.7);
  display: flex;
  align-items: flex-start;
  justify-content: center;
  padding: 4rem 1rem;
  z-index: 50;
}

.course-modal[hidden] {
  display: none;
}

.course-modal__dialog {
  background: #1a1a1a;
  border-radius: 24px;
  border: 0px solid rgba(255, 255, 255, 0.08);
  padding: 1.5rem;
  width: min(640px, 100%);
  display: grid;
  gap: 1rem;
}

.course-modal__header {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.course-modal__close {
  border: none;
  background: transparent;
  color: #fff;
  font-size: 1.5rem;
  cursor: pointer;
}

.course-lesson-picker {
  display: grid;
  gap: 0.5rem;
}

.course-lesson-picker__list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.course-lesson-picker__item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: rgba(255, 255, 255, 0.04);
  border-radius: 14px;
  padding: 0.5rem 0.75rem;
}

.course-lesson-picker__controls {
  display: flex;
  gap: 0.3rem;
}

.course-lesson-picker__controls button {
  border: none;
  background: rgba(255, 255, 255, 0.1);
  color: #fff;
  border-radius: 8px;
  padding: 0.25rem 0.45rem;
  cursor: pointer;
}

.course-modal__actions {
  display: flex;
  justify-content: flex-end;
  gap: 0.5rem;
}

.manage-card {
  background: var(--bg-secondary);
  border-radius: 18px;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.manage-card__cover {
  height: 160px;
  background-size: cover;
  background-position: center;
}

.manage-card__body {
  padding: 1rem;
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.muted {
  color: var(--text-secondary);
  font-size: 0.92rem;
}

.badge {
  display: inline-flex;
  align-items: center;
  border-radius: 999px;
  padding: 0.2rem 0.75rem;
  background: rgba(255, 255, 255, 0.08);
  font-size: 0.8rem;
  color: #fff;
  margin-bottom: 10px;
}

.optional-badge {
  display: inline-block;
  padding: 0.15rem 0.6rem;
  background: rgba(255, 255, 255, 0.06);
  border-radius: 999px;
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--text-muted);
  margin-left: 0.5rem;
}

.meta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  font-size: 0.75rem;
  color: var(--text-secondary);
}

.manage-card__actions {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.manage-card__stats {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 0.75rem;
}

.views-chip {
  background: rgba(255, 255, 255, 0.08);
  border-radius: 999px;
  padding: 0.25rem 0.8rem;
  font-size: 0.85rem;
  color: #fff;
}

.trend-chart {
  flex: 1;
  max-width: 160px;
  height: 50px;
}

.edit-form {
  margin-top: 0.75rem;
  display: grid;
  gap: 0.65rem;
}

.edit-form input,
.edit-form textarea {
  width: 100%;
  border-radius: 12px;
  border: 0px solid #2b2b2b;
  background: #101010;
  color: var(--text);
  padding: 0.6rem;
  font-family: inherit;
}

.edit-form label {
  display: grid;
  gap: 0.35rem;
  font-size: 0.85rem;
}

.edit-form__actions {
  display: flex;
  justify-content: flex-end;
  gap: 0.5rem;
}

.form-card {
  background: var(--bg-secondary);
  border-radius: 18px;
  padding: 1.5rem;
  display: grid;
  gap: 1rem;
}

.form-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1rem;
}

.form-card label {
  display: grid;
  gap: 0.4rem;
  font-size: 0.9rem;
  color: var(--text-secondary);
}

.form-card .file-label input[type="file"] {
  padding: 0.4rem 0;
  border: none;
  background: transparent;
  color: var(--text);
}

.form-card .file-label small {
  font-size: 0.75rem;
  color: #8b93b5;
}

.form-card input,
.form-card textarea,
.form-card select {
  border-radius: 14px;
  border: 0px solid #2b2b2b;
  background: #101010;
  color: var(--text);
  padding: 0.65rem 0.85rem;
  font-family: inherit;
  font-size: 1rem;
}

.form-card textarea {
  resize: vertical;
}

.form-card select {
  appearance: none;
}

.form-card .checkbox {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.form-card .checkbox input {
  width: auto;
}

.form-actions {
  display: flex;
  justify-content: flex-end;
  gap: 0.75rem;
}

.upload-progress {
  background: rgba(255, 255, 255, 0.04);
  border: 0px solid rgba(255, 255, 255, 0.08);
  border-radius: 16px;
  padding: 1rem;
  display: grid;
  gap: 0.55rem;
}

.upload-progress__label {
  font-size: 0.9rem;
  color: var(--text-secondary);
}

.upload-progress__bar {
  width: 100%;
  height: 10px;
  border-radius: 999px;
  background: #0e0e0e;
  overflow: hidden;
}

.upload-progress__value {
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, #ff6b6b, #ffa15c);
  transition: width 0.2s ease;
}

.upload-progress__percent {
  text-align: right;
  font-weight: 600;
  font-size: 0.9rem;
}

/* Course page */
.course-page {
  max-width: 1200px;
  margin: 0 auto;
}

.course-hero {
  display: grid;
  grid-template-columns: minmax(0, 320px) 1fr;
  gap: 0;
  background: var(--bg-secondary);
  border-radius: 24px;
  overflow: hidden;
  border: 0px solid rgba(255, 255, 255, 0.05);
  margin-bottom: 2rem;
}

.course-hero__cover {
  background-size: cover;
  background-position: center;
  background-color: #1f1f1f;
  min-height: 220px;
}

.course-hero__info {
  padding: 2rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.course-author,
.course-description {
  margin: 0;
  color: var(--text-secondary);
}

.course-meta {
  display: flex;
  gap: 0.75rem;
  color: var(--text-secondary);
  font-size: 0.9rem;
}

.course-lessons {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.course-lesson {
  background: #1e1e1e;
  border: 0px solid rgba(255, 255, 255, 0.05);
  border-radius: 18px;
  padding: 1rem 1.1rem;
  cursor: pointer;
  transition: background 0.2s ease, border-color 0.2s ease, transform 0.2s ease;
}

.course-lesson:hover {
  background: #222222;
  border-color: rgba(255, 255, 255, 0.08);
  transform: translateY(-1px);
}

.course-lesson__info {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.course-lesson__meta {
  color: var(--text-secondary);
  font-size: 0.85rem;
}

@media (max-width: 900px) {
  .course-hero {
    grid-template-columns: 1fr;
  }

  .course-hero__cover {
    min-height: 0;
    aspect-ratio: 16 / 9;
  }

  .course-hero__info {
    padding: 1.25rem;
  }
}

/* Watch page */
.watch-page {
  max-width: 1400px;
  margin: 0 auto;
}

.watch-layout {
  display: grid;
  grid-template-columns: minmax(0, 4fr) minmax(260px, 1fr);
  gap: 2rem;
}

.watch-player {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.watch-player video {
  width: 100%;
  border-radius: 20px;
  box-shadow: 0 20px 45px rgba(0, 0, 0, 0.35);
  background: #000;
}

.watch-meta h1 {
  margin: 0;
}

.watch-info {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem;
  font-size: 0.85rem;
  color: var(--text-secondary);
  align-items: center;
}

.watch-info a {
  color: inherit;
  text-decoration: none;
}

.watch-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
}

.watch-tag {
  padding: 0.25rem 0.65rem;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.08);
  color: var(--text);
  font-size: 0.85rem;
  text-decoration: none;
  display: inline-flex;
}

.watch-sidebar h2 {
  margin-top: 0;
  margin-bottom: 0.75rem;
}

.watch-course-block {
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 22px;
  padding: 0.75rem;
  background: rgba(255, 255, 255, 0.02);
  margin-bottom: 1.25rem;
}

.related-list {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 1.5rem;
}

.related-card {
  display: flex;
  flex-direction: column;
  text-decoration: none;
  overflow: hidden;
  color: var(--text);
  cursor: pointer;
  transition: all 0.3s cubic-bezier(0.25, 0.1, 0.25, 1);
}

.related-card:hover {
  opacity: 0.85;
}

.related-card.is-active {
  opacity: 1;
}

.related-card.is-active .related-card__thumb {
  outline: 2px solid rgba(129, 140, 248, 0.5);
  outline-offset: -2px;
}

.related-card__thumb {
  background-color: #000;
  background-size: cover;
  background-position: center;
  aspect-ratio: 16/9;
  position: relative;
  overflow: hidden;
  width: 100%;
  border-radius: var(--radius, 24px);
}

.related-card__thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.related-card__body {
  display: flex;
  flex-direction: column;
  gap: 3px;
  padding: 12px 4px 0;
}

.related-card__body .title {
  font-size: 0.95rem;
  font-weight: 600;
  line-height: 1.4;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.related-card__course {
  font-size: 0.75rem;
  color: #71717a;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.related-card__body span:not(.related-card__course) {
  font-size: 0.8rem;
  color: var(--text-secondary);
}

@media (max-width: 960px) {
  .watch-layout {
    grid-template-columns: 1fr;
  }
}

/* Profile */
.profile-page {
  max-width: 1100px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  padding-bottom: 4rem;
}

.profile-header {
  display: flex;
  gap: 2.5rem;
  background: var(--bg-secondary);
  border: 1px solid rgba(255, 255, 255, 0.05);
  padding: 2.5rem;
  border-radius: var(--radius);
  align-items: center;
}

.profile-avatar {
  width: 140px;
  height: 140px;
  border-radius: 50%;
  background-size: cover;
  background-position: center;
  background-color: var(--bg-tertiary);
  flex-shrink: 0;
}

.profile-avatar.is-initials {
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 600;
  font-size: 2.75rem;
  color: #fff;
  text-transform: uppercase;
}

.profile-info {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  flex: 1;
}

.profile-name {
  margin: 0;
  font-size: 2.25rem;
  font-weight: 600;
  line-height: 1.1;
  letter-spacing: -0.02em;
  color: var(--text);
}

.profile-specialization {
  margin: 0;
  font-size: 1rem;
  color: var(--text-muted);
  font-weight: 500;
}

.profile-bio {
  margin: 0.25rem 0 0;
  color: var(--text-muted);
  font-size: 0.95rem;
  line-height: 1.5;
  max-width: 600px;
}

.profile-meta {
  display: none;
}

.profile-actions {
  display: flex;
  gap: 0.75rem;
  margin-top: 1.25rem;
  flex-wrap: wrap;
}

.dashboard__stats {
  display: flex;
  flex-direction: row;
  gap: 1rem;
}

.stats-card {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  transition: border-color 0.2s ease, transform 0.2s ease;
}

.stats-card:hover {
  border-color: var(--border-hover);
  transform: translateY(-1px);
}

.stats-card strong {
  font-size: 1.75rem;
  font-weight: 600;
  color: var(--text);
  line-height: 1;
}

.stats-card span {
  font-size: 0.9rem;
  color: var(--text-muted);
}

.stats-card__main {
  display: flex;
  align-items: baseline;
  gap: 0.6rem;
}

.stats-card .stats-delta {
  font-size: 1rem;
  font-weight: 600;
  color: #4ade80;
  line-height: 1;
  display: inline-flex;
  align-items: baseline;
}

.stats-card .stats-delta.down {
  color: #f87171;
}

.stats-card .stats-delta__sign {
  font-size: 0.85rem;
  margin-right: 0.1rem;
}

.stats-card__unit {
  font-size: 1rem;
  font-weight: 600;
  color: #71717a;
  margin-left: 0.15rem;
  align-self: baseline;
}

.stats-row--secondary {
  margin-top: 0.85rem;
}

.stats-row--secondary .stats-card {
  flex: 1 1 160px;
}

@media (max-width: 1024px) {
  .profile-header {
    flex-direction: column;
    align-items: flex-start;
    gap: 1.5rem;
  }

  .dashboard__stats {
    width: 100%;
    display: grid;
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .dashboard__stats {
    grid-template-columns: 1fr;
  }
}

/* ── Analytics chart ─────────────────────────────────────────────────────── */
.analytics-chart {
  background: rgba(255, 255, 255, 0.03);
  border-radius: 20px;
  padding: 1.4rem 1.5rem 1.6rem;
  margin-top: 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 1.15rem;
}

.analytics-chart[hidden] {
  display: none;
}

.analytics-chart__header {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1rem;
}

.analytics-chart__header h2 {
  margin: 0 0 0.25rem;
  font-size: 1.15rem;
  color: #fff;
}

.analytics-chart__subtitle {
  margin: 0;
  font-size: 0.85rem;
  color: #71717a;
}

.analytics-controls {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  align-items: center;
}

.metric-tabs,
.range-tabs {
  display: inline-flex;
  background: rgba(255, 255, 255, 0.04);
  border-radius: 12px;
  padding: 0.25rem;
  gap: 0.15rem;
}

.metric-tab,
.range-tab {
  background: transparent;
  border: none;
  color: #a1a1aa;
  font-size: 0.82rem;
  font-weight: 500;
  padding: 0.4rem 0.85rem;
  border-radius: 9px;
  cursor: pointer;
  transition: background-color 0.15s ease, color 0.15s ease;
  font-family: inherit;
}

.metric-tab:hover,
.range-tab:hover {
  color: #fff;
}

.metric-tab.active,
.range-tab.active {
  background: rgba(56, 189, 248, 0.15);
  color: #38bdf8;
}

.analytics-chart__summary {
  display: flex;
  flex-wrap: wrap;
  gap: 1.5rem;
  padding-bottom: 0.4rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.analytics-chart__total {
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
  min-width: 110px;
}

.analytics-chart__total-label {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: #71717a;
}

.analytics-chart__total strong {
  font-size: 1.35rem;
  font-weight: 700;
  color: #fff;
  line-height: 1;
}

.analytics-chart__canvas {
  position: relative;
  width: 100%;
  height: 260px;
}

.analytics-chart__canvas svg {
  width: 100%;
  height: 100%;
  display: block;
  overflow: visible;
}

.analytics-chart__canvas .chart-grid line {
  stroke: rgba(255, 255, 255, 0.05);
  stroke-width: 1;
}

.analytics-chart__canvas .chart-axis text {
  fill: #71717a;
  font-size: 11px;
  font-family: inherit;
}

.analytics-chart__canvas .chart-area {
  fill: url(#chartAreaGradient);
}

.analytics-chart__canvas .chart-line {
  fill: none;
  stroke: #38bdf8;
  stroke-width: 2.5;
  stroke-linejoin: round;
  stroke-linecap: round;
}

.analytics-chart__canvas .chart-point {
  fill: #38bdf8;
  stroke: #0a0a0a;
  stroke-width: 2;
  cursor: pointer;
  transition: r 0.15s ease;
}

.analytics-chart__canvas .chart-point:hover {
  r: 6;
}

.analytics-chart__canvas .chart-hover-line {
  stroke: rgba(56, 189, 248, 0.35);
  stroke-width: 1;
  stroke-dasharray: 4 4;
}

.chart-tooltip {
  position: absolute;
  background: rgba(15, 15, 18, 0.95);
  border: 1px solid rgba(255, 255, 255, 0.08);
  padding: 0.55rem 0.75rem;
  border-radius: 10px;
  font-size: 0.8rem;
  color: #fff;
  pointer-events: none;
  transform: translate(-50%, -110%);
  white-space: nowrap;
  z-index: 5;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.35);
}

.chart-tooltip[hidden] {
  display: none;
}

.chart-tooltip__label {
  display: block;
  color: #a1a1aa;
  font-size: 0.7rem;
  margin-bottom: 0.15rem;
}

.chart-tooltip__value {
  font-weight: 700;
  color: #38bdf8;
}

.chart-empty {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  height: 100%;
  color: #71717a;
  font-size: 0.9rem;
}

/* ── Top lectures ────────────────────────────────────────────────────────── */
.top-lectures {
  background: rgba(255, 255, 255, 0.03);
  border-radius: 20px;
  padding: 1.4rem 1.5rem;
  margin-top: 1.25rem;
}

.top-lectures[hidden] {
  display: none;
}

.top-lectures__header {
  margin-bottom: 1rem;
}

.top-lectures__header h2 {
  margin: 0 0 0.25rem;
  font-size: 1.15rem;
  color: #fff;
}

.top-lectures__subtitle {
  margin: 0;
  font-size: 0.85rem;
  color: #71717a;
}

.top-lectures__list {
  display: flex;
  flex-direction: column;
  gap: 0.55rem;
}

.top-lecture-item {
  display: grid;
  grid-template-columns: 36px 90px 1fr auto;
  gap: 1rem;
  align-items: center;
  padding: 0.7rem 0.85rem;
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.02);
  cursor: pointer;
  transition: background-color 0.15s ease, transform 0.15s ease;
  border: 1px solid transparent;
}

.top-lecture-item:hover {
  background: rgba(255, 255, 255, 0.05);
  border-color: rgba(56, 189, 248, 0.18);
}

.top-lecture-item__rank {
  font-size: 1.4rem;
  font-weight: 700;
  color: #71717a;
  text-align: center;
  font-variant-numeric: tabular-nums;
}

.top-lecture-item:nth-child(1) .top-lecture-item__rank {
  color: #fbbf24;
}

.top-lecture-item:nth-child(2) .top-lecture-item__rank {
  color: #cbd5e1;
}

.top-lecture-item:nth-child(3) .top-lecture-item__rank {
  color: #d97706;
}

.top-lecture-item__thumb {
  width: 90px;
  height: 56px;
  border-radius: 10px;
  background: linear-gradient(135deg, #312c3c, #141823);
  background-size: cover;
  background-position: center;
  flex-shrink: 0;
}

.top-lecture-item__title {
  font-size: 0.95rem;
  font-weight: 600;
  color: #fff;
  margin: 0 0 0.2rem;
  line-height: 1.3;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.top-lecture-item__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.85rem;
  font-size: 0.78rem;
  color: #71717a;
}

.top-lecture-item__meta i {
  margin-right: 0.25rem;
  opacity: 0.8;
}

.top-lecture-item__bar {
  position: relative;
  width: 140px;
  height: 6px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.05);
  overflow: hidden;
}

.top-lecture-item__bar-fill {
  position: absolute;
  inset: 0 auto 0 0;
  background: linear-gradient(90deg, #38bdf8, #818cf8);
  border-radius: inherit;
  transition: width 0.4s ease;
}

.top-lecture-item__views {
  font-size: 1rem;
  font-weight: 700;
  color: #fff;
  font-variant-numeric: tabular-nums;
  margin-bottom: 0.25rem;
  text-align: right;
}

.top-lecture-item__right {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 0.25rem;
}

@media (max-width: 768px) {

  .analytics-chart,
  .top-lectures {
    padding: 1.1rem;
  }

  .analytics-controls {
    width: 100%;
    justify-content: flex-start;
  }

  .metric-tabs,
  .range-tabs {
    flex-wrap: wrap;
  }

  .top-lecture-item {
    grid-template-columns: 32px 70px 1fr;
    gap: 0.75rem;
  }

  .top-lecture-item__thumb {
    width: 70px;
    height: 44px;
  }

  .top-lecture-item__right {
    grid-column: 2 / 4;
    align-items: stretch;
    flex-direction: row;
    justify-content: space-between;
    margin-top: 0.4rem;
  }

  .top-lecture-item__views {
    text-align: left;
  }

  .top-lecture-item__bar {
    width: 100px;
    align-self: center;
  }
}

.profile-form {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 2rem;
  display: grid;
  gap: 1.5rem;
  margin-bottom: 2rem;
  transition: border-color 0.2s ease;
}

.profile-form:hover {
  border-color: var(--border-hover);
}

.profile-form[hidden] {
  display: none;
}

.profile-form label {
  display: grid;
  gap: 0.5rem;
  color: var(--text-muted);
  font-size: 0.9rem;
  font-weight: 500;
}

.profile-form input,
.profile-form textarea {
  border: 1px solid rgba(255, 255, 255, 0.08);
  background: rgba(0, 0, 0, 0.2);
  border-radius: 12px;
  padding: 0.75rem 1rem;
  color: var(--text);
  font-family: inherit;
  font-size: 0.95rem;
  transition: border-color 0.2s ease, background 0.2s ease;
}

.profile-form input:focus,
.profile-form textarea:focus {
  outline: none;
  border-color: rgba(255, 255, 255, 0.2);
  background: rgba(0, 0, 0, 0.4);
}

.profile-form__actions {
  display: flex;
  justify-content: flex-end;
  gap: 1rem;
  margin-top: 0.5rem;
}

.profile-filters {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  margin-bottom: 1.5rem;
  margin-top: 2rem;
  gap: 1.5rem;
}

.profile-filters h2 {
  margin: 0;
  font-size: 1.75rem;
  color: var(--text);
  font-weight: 600;
  letter-spacing: -0.01em;
}

/* Side Controls */
.side-controls {
  position: fixed;
  right: 2rem;
  top: 50%;
  transform: translateY(-50%);
  display: flex;
  flex-direction: column;
  gap: 1rem;
  z-index: 100;
}

/* Manage Cards (Unified Premium Design) */
.manage-grid,
.course-manage-grid {
  display: grid;
  gap: 1.5rem;
  margin-bottom: 2rem;
}

.manage-card {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  display: flex;
  transition: all 0.2s ease;
}

.manage-card:hover {
  border-color: var(--border-hover);
  transform: translateY(-2px);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
}

.manage-card__cover {
  width: 260px;
  background-color: var(--bg-tertiary);
  position: relative;
  overflow: hidden;
  flex-shrink: 0;
}

.manage-card__cover img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform 0.3s ease;
}

.manage-card:hover .manage-card__cover img {
  transform: scale(1.03);
}

.manage-card__body {
  flex: 1;
  padding: 1.75rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  min-width: 0;
}

.manage-card__body h3 {
  margin: 0;
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--text);
  line-height: 1.3;
}

.manage-card__stats {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  margin-top: auto;
  padding-top: 1.25rem;
  border-top: 1px solid rgba(255, 255, 255, 0.05);
}

.manage-card__actions {
  display: flex;
  gap: 0.75rem;
  margin-top: 1.25rem;
}

/* Course Management Card */
.course-manage-card {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem 1.75rem;
  transition: border-color 0.2s ease;
}

.course-manage-card:hover {
  border-color: var(--border-hover);
}

.course-manage-card__header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
}

.course-info h3 {
  margin: 0 0 0.4rem;
  font-size: 1.3rem;
  font-weight: 600;
  color: var(--text);
  letter-spacing: -0.01em;
}

.course-info .muted {
  margin: 0 0 1rem;
  color: var(--text-secondary);
  font-size: 0.95rem;
  max-width: 600px;
  line-height: 1.5;
}

.course-actions {
  display: flex;
  gap: 0.75rem;
}

.course-manage-card__videos {
  width: 100%;
  overflow: hidden;
  margin-top: 1rem;
}

.course-videos-list {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.course-video-card {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 0.75rem 1rem;
  background: rgba(0, 0, 0, 0.15);
  border: 1px solid rgba(255, 255, 255, 0.03);
  border-radius: 12px;
  text-decoration: none;
  transition: all 0.2s ease;
}

.course-video-card:hover {
  background: rgba(255, 255, 255, 0.04);
  border-color: rgba(255, 255, 255, 0.08);
  transform: translateX(4px);
}

.course-video-thumb {
  width: 64px;
  height: 40px;
  min-width: 64px;
  border-radius: 6px;
  background-size: cover;
  background-position: center;
  background-color: var(--bg-tertiary);
  position: relative;
  overflow: hidden;
}

.course-video-thumb .no-thumb {
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, #27272a, #18181b);
}

.course-video-thumb .duration {
  display: none;
}

.course-video-info {
  flex: 1;
  min-width: 0;
  padding: 0;
  display: flex;
  align-items: center;
  gap: 1rem;
}

.course-video-title {
  flex: 1;
  font-weight: 500;
  color: var(--text);
  margin: 0;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  font-size: 0.95rem;
  line-height: 1.4;
}

@media (max-width: 1024px) {
  .side-controls {
    right: 1rem;
  }
}

@media (max-width: 768px) {
  .manage-card {
    flex-direction: column;
  }

  .manage-card__cover {
    width: 100%;
    aspect-ratio: 16/9;
  }

  .course-manage-card__header {
    flex-direction: column;
    align-items: flex-start;
    gap: 1.5rem;
  }

  .course-actions {
    width: 100%;
    justify-content: flex-start;
  }
}

.course-video-meta {
  font-size: 0.78rem;
  color: #52525b;
  white-space: nowrap;
}

.empty-lessons {
  padding: 2rem;
  text-align: center;
  color: #52525b;
  font-size: 0.9rem;
  background: rgba(255, 255, 255, 0.02);
  border-radius: 12px;
  width: 100%;
}

/* Course Modal Redesign */
.course-modal {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.7);
  backdrop-filter: blur(8px);
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1rem;
  opacity: 0;
  visibility: hidden;
  transition: all 0.3s ease;
}

.course-modal:not([hidden]) {
  opacity: 1;
  visibility: visible;
  display: flex;
}

.course-modal__dialog {
  background: #09090b;
  border: 0px solid rgba(255, 255, 255, 0.1);
  border-radius: 24px;
  width: 100%;
  max-width: 550px;
  max-height: 90vh;
  overflow-y: auto;
  box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
  transform: scale(0.95);
  transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  display: flex;
  flex-direction: column;
}

.course-modal:not([hidden]) .course-modal__dialog {
  transform: scale(1);
}

.course-modal__header {
  padding: 1.5rem 1.5rem 1rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.course-modal__header h3 {
  margin: 0;
  font-size: 1.25rem;
  color: #fff;
}

.course-modal__close {
  background: transparent;
  border: none;
  color: #a1a1aa;
  font-size: 1.5rem;
  cursor: pointer;
  padding: 0.25rem;
  line-height: 1;
  border-radius: 50%;
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.2s ease;
}

.course-modal__close:hover {
  background: rgba(255, 255, 255, 0.1);
  color: #fff;
}

#courseForm {
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

#courseForm label {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  color: #a1a1aa;
  font-size: 0.9rem;
  font-weight: 500;
}

#courseForm input[type="text"],
#courseForm textarea,
#courseForm select {
  background: #18181b;
  border: 0px solid rgba(255, 255, 255, 0.1);
  border-radius: 12px;
  padding: 0.75rem 1rem;
  color: #fff;
  font-family: inherit;
  font-size: 0.95rem;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

#courseForm input[type="text"]:focus,
#courseForm textarea:focus,
#courseForm select:focus {
  outline: none;
  border-color: rgba(255, 255, 255, 0.3);
  box-shadow: 0 0 0 3px rgba(255, 255, 255, 0.05);
}

#courseForm textarea {
  resize: vertical;
  min-height: 80px;
}

.course-lesson-picker {
  background: #18181b;
  border: 0px solid rgba(255, 255, 255, 0.05);
  border-radius: 16px;
  padding: 1rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.course-lesson-picker__head {
  font-weight: 600;
  color: #fff;
  font-size: 0.95rem;
}

.course-lesson-picker__list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  max-height: 200px;
  overflow-y: auto;
}

.course-lesson-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: rgba(255, 255, 255, 0.03);
  padding: 0.5rem 0.75rem;
  border-radius: 8px;
  font-size: 0.9rem;
  color: #e4e4e7;
}

.course-lesson-item button {
  color: #ef4444;
  background: transparent;
  border: none;
  cursor: pointer;
  font-size: 0.8rem;
  padding: 0.25rem;
  opacity: 0.7;
  transition: opacity 0.2s;
}

.course-lesson-item button:hover {
  opacity: 1;
}

.course-modal__actions {
  display: flex;
  justify-content: flex-end;
  gap: 0.75rem;
  margin-top: 0.5rem;
  padding-top: 1rem;
  border-top: 0px solid rgba(255, 255, 255, 0.05);
}


.vertical-line {
  width: 1px;
  margin: 0;
  height: 20px;
  padding: 0;
  opacity: 0.3;
}

/* AI Generation Styles */
.label-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 0.5rem;
}

.btn-ai {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.4rem 0.8rem;
  border-radius: 999px;
  border: 1px solid rgba(255, 255, 255, 0.1);
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.05) 0%, rgba(255, 255, 255, 0.02) 100%);
  color: var(--text);
  font-size: 0.85rem;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.3s ease;
  text-decoration: none;
}

.btn-ai:hover {
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.1) 0%, rgba(255, 255, 255, 0.05) 100%);
  border-color: rgba(255, 255, 255, 0.2);
  box-shadow: 0 0 15px rgba(255, 255, 255, 0.05);
}

.btn-ai i {
  background: linear-gradient(135deg, #60a5fa 0%, #a855f7 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

/* Loading States */
.ai-loading {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 1rem;
  background: rgba(255, 255, 255, 0.02);
  border-radius: 12px;
  margin-bottom: 1rem;
  border: 1px solid rgba(255, 255, 255, 0.05);
}

.ai-loading-text {
  font-size: 0.9rem;
  color: var(--text-secondary);
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0% {
    opacity: 0.6;
  }

  50% {
    opacity: 1;
  }

  100% {
    opacity: 0.6;
  }
}

/* Typing Indicator */
.typing-indicator {
  display: flex;
  gap: 4px;
}

.typing-indicator span {
  width: 6px;
  height: 6px;
  background: var(--text-secondary);
  border-radius: 50%;
  animation: typing 1.4s infinite ease-in-out both;
}

.typing-indicator span:nth-child(1) {
  animation-delay: -0.32s;
}

.typing-indicator span:nth-child(2) {
  animation-delay: -0.16s;
}

@keyframes typing {

  0%,
  80%,
  100% {
    transform: scale(0);
  }

  40% {
    transform: scale(1);
  }
}

/* Modern Spinner */
.spinner-modern {
  width: 20px;
  height: 20px;
  border: 2px solid rgba(255, 255, 255, 0.1);
  border-left-color: #fff;
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

/* Generated Cover Preview */
.generated-cover-preview {
  margin-top: 1rem;
  padding: 1rem;
  background: rgba(255, 255, 255, 0.02);
  border-radius: 16px;
  border: 1px solid rgba(255, 255, 255, 0.05);
}

.generated-cover-preview p {
  margin: 0 0 0.75rem;
  font-size: 0.9rem;
  color: var(--text-secondary);
}

.cover-wrapper {
  position: relative;
  width: 100%;
  max-width: 300px;
  aspect-ratio: 16/9;
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
}

.cover-wrapper img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.cover-actions {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.6);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1rem;
  opacity: 0;
  transition: opacity 0.2s ease;
}

.cover-wrapper:hover .cover-actions {
  opacity: 1;
}

.btn-icon {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(4px);
  border: 1px solid rgba(255, 255, 255, 0.2);
  color: #fff;
  cursor: pointer;
  transition: all 0.2s ease;
  text-decoration: none;
}

.btn-icon:hover {
  background: #fff;
  color: #000;
  transform: scale(1.1);
}

.btn-icon.success:hover {
  background: #22c55e;
  color: #fff;
  border-color: #22c55e;
}

/* ============================================
   WATCH PAGE - Video Player & Chapters
   ============================================ */


.watch-layout {
  display: grid;
  grid-template-columns: 1fr 330px;
  gap: 2rem;
}

@media (max-width: 1100px) {
  .watch-layout {
    grid-template-columns: 1fr;
  }
}

.watch-player {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

/* ============================================
   CUSTOM VIDEO PLAYER - Modern Glassmorphism
   ============================================ */

.player-container {
  position: relative;
  background: #000;
  border-radius: 25px;
  overflow: hidden;
  cursor: pointer;
}

.player-container video {
  width: 100%;
  display: block;
  background: #fff;
}

/* Controls Overlay */
.player-controls {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: 0 16px 12px;
  background: linear-gradient(to top, rgba(0, 0, 0, 0.85) 0%, rgba(0, 0, 0, 0.4) 60%, transparent 100%);
  opacity: 0;
  transition: opacity 0.3s ease;
  z-index: 10;
  cursor: default;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.player-container.is-paused .player-controls,
.player-container.show-controls .player-controls {
  opacity: 1;
}

/* Progress Bar */
.player-progress {
  position: relative;
  padding: 12px 0 0;
  cursor: pointer;
  overflow: visible;
}

/* Progress Track - contains chapter segments */
.progress-track {
  position: relative;
  height: 4px;
  display: flex;
  gap: 3px;
  transition: height 0.15s ease;
  overflow: visible;
}

.player-progress:hover .progress-track {
  height: 6px;
}

/* Chapter Segment */
.chapter-segment {
  position: relative;
  height: 100%;
  background: rgb(107 107 107 / 25%);
  border-radius: 2px;
  transition: background 0.15s ease, transform 0.15s ease;
  overflow: hidden;
}

.chapter-segment:hover {
  background: rgba(255, 255, 255, 0.45);
  transform: scaleY(1.3);
}

/* Played portion inside each segment */
.chapter-segment .segment-played {
  position: absolute;
  top: 0;
  left: 0;
  height: 100%;
  background: #fff;
  border-radius: 2px;
  pointer-events: none;
}

/* Overall progress played indicator (fallback if no chapters) */
.progress-played {
  position: absolute;
  top: 0;
  left: 0;
  height: 4px;
  background: #fff;
  border-radius: 2px;
  pointer-events: none;
  z-index: 2;
  transition: height 0.15s ease;
}

.player-progress:hover .progress-played {
  height: 6px;
}

/* Hide overall played bar when chapters exist */
.progress-track:not(:empty)~.progress-played {
  display: none;
}

.progress-handle {
  position: absolute;
  top: 14px;
  width: 14px;
  height: 14px;
  background: #fff;
  border-radius: 50%;
  transform: translate(-50%, -50%) scale(0);
  transition: transform 0.15s ease;
  pointer-events: none;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.4);
  z-index: 3;
}

.player-progress:hover .progress-handle {
  transform: translate(-50%, -50%) scale(1);
}

/* Chapter Tooltip */
.chapter-tooltip {
  position: absolute;
  bottom: calc(100% + 8px);
  left: 0;
  padding: 6px 10px;
  background: rgba(28, 28, 30, 0.9);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-radius: 8px;
  transform: translateX(-50%);
  white-space: nowrap;
  pointer-events: none;
  z-index: 100;
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 0.8rem;
  color: #fff;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.4);
}

.tooltip-time {
  font-weight: bold;
}

.tooltip-title {
  max-width: 200px;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* Bottom Controls */
.player-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.player-left,
.player-right {
  display: flex;
  align-items: center;
  gap: 8px;
}

.player-btn {
  width: 40px;
  height: 40px;
  border: none;
  background: rgb(0 0 0 / 30%);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border-radius: 25px;
  color: #fff;
  font-size: 1rem;
  cursor: pointer;
  transition: background 0.2s ease, transform 0.15s ease;
  display: flex;
  align-items: center;
  justify-content: center;
}

.player-btn:hover {
  background: rgba(255, 255, 255, 0.2);
  transform: scale(1.05);
}

.player-btn.is-active {
  background: #fff;
  color: #000;
}

/* Volume Slider */
.volume-slider {
  width: 0;
  opacity: 0;
  transition: width 0.2s ease, opacity 0.2s ease;
  accent-color: #fff;
  cursor: pointer;
}

.player-left:hover .volume-slider {
  width: 80px;
  opacity: 1;
  margin-left: -4px;
}

.player-time {
  font-size: 0.85rem;
  color: rgba(255, 255, 255, 0.8);
}

/* Speed Control */
.speed-control {
  position: relative;
}

.speed-control .player-btn {
  font-size: 0.8rem;
  font-weight: 600;
  min-width: 40px;
}

.speed-menu {
  position: absolute;
  bottom: 100%;
  right: 0;
  margin-bottom: 8px;
  background: rgba(20, 20, 20, 0.95);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-radius: 12px;
  border: 1px solid rgba(255, 255, 255, 0.1);
  padding: 6px;
  display: flex;
  flex-direction: column;
  gap: 2px;
  min-width: 70px;
  z-index: 100;
}

.speed-menu button {
  padding: 8px 12px;
  border: none;
  background: transparent;
  color: rgba(255, 255, 255, 0.7);
  font-size: 0.85rem;
  font-weight: 500;
  border-radius: 8px;
  cursor: pointer;
  transition: background 0.15s ease, color 0.15s ease;
  text-align: center;
}

.speed-menu button:hover {
  background: rgba(255, 255, 255, 0.1);
  color: #fff;
}

.speed-menu button.is-active {
  background: #fff;
  color: #000;
}

/* Video Language Control */
.video-lang-control {
  position: relative;
}

.lang-menu {
  position: absolute;
  bottom: 100%;
  right: 0;
  margin-bottom: 8px;
  background: rgba(20, 20, 20, 0.95);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-radius: 12px;
  border: 1px solid rgba(255, 255, 255, 0.1);
  padding: 6px;
  display: flex;
  flex-direction: column;
  gap: 2px;
  min-width: 140px;
  z-index: 100;
}

.lang-menu button {
  padding: 8px 12px;
  border: none;
  background: transparent;
  color: rgba(255, 255, 255, 0.7);
  font-size: 0.85rem;
  font-weight: 500;
  border-radius: 8px;
  cursor: pointer;
  width: 100%;
  text-align: left;
  white-space: nowrap;
  transition: background 0.15s ease, color 0.15s ease;
}

.lang-menu button:hover {
  background: rgba(255, 255, 255, 0.1);
  color: #fff;
}

.lang-menu button.is-active {
  background: #fff;
  color: #000;
}

/* Captions Control */
.captions-control {
  position: relative;
}

.captions-menu {
  position: absolute;
  bottom: 100%;
  right: 0;
  margin-bottom: 8px;
  background: rgba(20, 20, 20, 0.95);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-radius: 12px;
  border: 1px solid rgba(255, 255, 255, 0.1);
  padding: 6px;
  display: flex;
  flex-direction: column;
  gap: 2px;
  min-width: 120px;
  z-index: 100;
}

.captions-menu button {
  padding: 8px 12px;
  border: none;
  background: transparent;
  color: rgba(255, 255, 255, 0.7);
  font-size: 0.85rem;
  font-weight: 500;
  border-radius: 8px;
  cursor: pointer;
  transition: background 0.15s ease, color 0.15s ease;
  text-align: left;
  white-space: nowrap;
}

.captions-menu button:hover {
  background: rgba(255, 255, 255, 0.1);
  color: #fff;
}

.captions-menu button.is-active {
  background: #fff;
  color: #000;
}

/* Video Subtitles/Captions Styling */
video::cue {
  background: rgba(0, 0, 0, 0.75);
  color: #fff;
  font-family: "Inter", -apple-system, BlinkMacSystemFont, sans-serif;
  font-size: 1.1rem;
  font-weight: 500;
  line-height: 1.4;
  padding: 4px 8px;
  border-radius: 4px;
  text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.5);
}

/* Fullscreen subtitle sizing */
.player-container:fullscreen video::cue {
  font-size: 1.5rem;
  padding: 6px 12px;
}

/* ============================================
   MOBILE PLAYER STYLES
   ============================================ */

@media (max-width: 768px) {
  .player-container {
    border-radius: 16px;
  }

  .player-controls {
    padding: 0 12px 10px;
  }

  .player-bottom {
    gap: 8px;
  }

  .player-left,
  .player-right {
    gap: 4px;
  }

  .player-btn {
    width: 36px;
    height: 36px;
    font-size: 0.9rem;
    border-radius: 20px;
  }

  .player-big-play {
    width: 60px;
    height: 60px;
    font-size: 1.4rem;
  }

  .player-time {
    font-size: 0.75rem;
    margin-left: 4px;
  }

  /* Volume slider - always visible on mobile (no hover) */
  .volume-slider {
    width: 60px;
    opacity: 1;
  }

  /* Progress bar - larger touch target */
  .progress-track {
    height: 6px;
  }

  .player-progress {
    padding: 8px 0;
  }

  .progress-handle {
    width: 16px;
    height: 16px;
    top: 11px;
    transform: translate(-50%, -50%) scale(1);
  }

  /* Chapter tooltip */
  .chapter-tooltip {
    font-size: 0.65rem;
    padding: 6px 10px;
    border-radius: 10px;
  }

  /* Speed/Captions/Lang menus */
  .speed-menu,
  .captions-menu,
  .lang-menu {
    min-width: 100px;
    border-radius: 10px;
  }

  .speed-menu button,
  .captions-menu button,
  .lang-menu button {
    padding: 10px 12px;
    font-size: 0.9rem;
  }

  /* Subtitles */
  video::cue {
    font-size: 0.9rem;
    padding: 3px 6px;
  }
}

@media (max-width: 480px) {
  .player-btn {
    width: 32px;
    height: 32px;
    font-size: 0.85rem;
  }

  .player-big-play {
    width: 50px;
    height: 50px;
    font-size: 1.2rem;
  }

  .player-time {
    font-size: 0.7rem;
  }

  .volume-slider {
    width: 50px;
  }

  video::cue {
    font-size: 0.8rem;
    padding: 2px 4px;
  }

  /* Hide some controls on very small screens */
  .speed-control .player-btn span {
    font-size: 0.7rem;
  }
}

/* Big Play Button (center) */
.player-big-play {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%) scale(1);
  width: 80px;
  height: 80px;
  border: none;
  background: rgb(0 0 0 / 30%);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-radius: 50%;
  color: #fff;
  font-size: 1.8rem;
  cursor: pointer;
  transition: transform 0.2s ease, background 0.2s ease, opacity 0.3s ease;
  z-index: 5;
  opacity: 1;
}

.player-big-play:hover {
  background: rgba(255, 255, 255, 0.25);
  transform: translate(-50%, -50%) scale(1.1);
}

.player-container.is-playing .player-big-play {
  opacity: 0;
  pointer-events: none;
}

/* Fullscreen Styles */
.player-container:fullscreen {
  border-radius: 0;
}

.player-container:fullscreen video {
  height: 100vh;
  aspect-ratio: auto;
}

/* iOS / iPhone fallback: Safari на iPhone не підтримує
   Element.requestFullscreen() для довільних елементів. JS виставляє клас
   .is-pseudo-fullscreen — а тут ми робимо повноекранний layout вручну.
   Використовуємо position:fixed + 100dvh, щоб коректно враховувати
   динамічну адресну панель Safari. */
.player-container.is-pseudo-fullscreen {
  position: fixed;
  inset: 0;
  width: 100vw;
  height: 100vh;
  height: 100dvh;
  z-index: 9999;
  border-radius: 0;
  background: #000;
}

.player-container.is-pseudo-fullscreen video {
  width: 100%;
  height: 100%;
  aspect-ratio: auto;
  object-fit: contain;
}

/* Внутрішня обгортка під час pseudo-fullscreen — ціль для swipe-down.
   Заповнює увесь контейнер; її children позиціонуються щодо неї так само,
   як раніше щодо самого player-container (position:absolute з bottom/top
   працює, бо обгортка теж absolute). Контейнер тримає чорний фон і
   незалежно фейдить його через inline backgroundColor. */
.player-container.is-pseudo-fullscreen>.pseudo-fs-content {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  transform-origin: center center;
  will-change: transform, opacity;
}

/* Контроли всередині pseudo-fullscreen зсуваємо вгору від home-indicator
   та лівого/правого notch (актуально для iPhone landscape). У звичайних
   селекторах .player-controls не використовує safe-area; додаємо локально. */
.player-container.is-pseudo-fullscreen .player-controls {
  padding-bottom: calc(12px + env(safe-area-inset-bottom));
  padding-left: calc(16px + env(safe-area-inset-left));
  padding-right: calc(16px + env(safe-area-inset-right));
}

/* Блокуємо скрол body, поки увімкнено псевдо-fullscreen. */
body.has-pseudo-fullscreen {
  overflow: hidden;
}

/* Meta Styles */
.watch-meta h1 {
  font-size: 1.5rem;
  font-weight: 600;
  margin: 0 0 0.5rem;
  line-height: 1.3;
}

.watch-meta p {
  margin: 0 0 0.75rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

.watch-info {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  color: var(--text-secondary);
  font-size: 0.9rem;
}

.watch-info a {
  color: var(--text);
  text-decoration: none;
  transition: color 0.2s;
}

.watch-info a:hover {
  color: #fff;
}

.watch-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 0.5rem;
}

.watch-tag {
  display: inline-block;
  padding: 0.3rem 0.8rem;
  background: rgba(255, 255, 255, 0.06);
  border-radius: 999px;
  color: var(--text-secondary);
  font-size: 0.8rem;
  text-decoration: none;
  transition: background 0.2s, color 0.2s;
}

.watch-tag:hover {
  background: rgba(255, 255, 255, 0.12);
  color: #fff;
}

/* Chapters Panel */
.chapters-panel {
  background: var(--bg-secondary);
  border-radius: 16px;
  border: 1px solid var(--border);
  overflow: hidden;
}

.chapters-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.75rem 1rem;
  border-bottom: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.02);
}

.chapters-header h3 {
  margin: 0;
  font-size: 0.95rem;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--text);
}

.chapters-header h3 i {
  color: var(--text-secondary);
}

.chapters-list {
  display: flex;
  flex-direction: column;
  max-height: 280px;
  overflow-y: auto;
}

.chapter-item {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.65rem 1rem;
  border: none;
  background: transparent;
  color: var(--text-secondary);
  text-align: left;
  cursor: pointer;
  transition: background 0.2s, color 0.2s;
  font-size: 0.9rem;
}

.chapter-item:hover {
  background: rgba(255, 255, 255, 0.05);
  color: var(--text);
}

.chapter-item.is-active {
  background: rgba(255, 255, 255, 0.08);
  color: #fff;
  font-weight: 500;
}

.chapter-item.is-active .chapter-time {
  color: #6ee7b7;
}

.chapter-time {
  font-family: 'SF Mono', Monaco, monospace;
  font-size: 0.8rem;
  color: var(--text-muted);
  min-width: 48px;
}

.chapter-title {
  flex: 1;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

/* Author Controls */
.author-controls {
  background: var(--bg-secondary);
  border-radius: 16px;
  border: 1px solid var(--border);
  padding: 1rem;
}

.author-controls h3 {
  margin: 0 0 0.75rem;
  font-size: 0.9rem;
  color: var(--text-secondary);
  font-weight: 500;
}

.author-controls__buttons {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.author-controls__status {
  margin-top: 0.75rem;
  padding: 0.65rem 0.9rem;
  background: rgba(255, 255, 255, 0.03);
  border-radius: 10px;
  font-size: 0.85rem;
  color: var(--text-secondary);
}

.author-controls__status.loading {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.author-controls__status.success {
  background: rgba(60, 210, 134, 0.1);
  color: #6ee7b7;
}

.author-controls__status.error {
  background: rgba(255, 78, 78, 0.1);
  color: #ff8383;
}

/* Watch Sidebar */
.watch-sidebar {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.watch-sidebar h2 {
  font-size: 1rem;
  margin: 0 0 0.75rem;
  color: var(--text);
}

/* (related-card styles unified in main section above) */

/* Spinner for loading states */
.spinner-small {
  width: 16px;
  height: 16px;
  border: 2px solid rgba(255, 255, 255, 0.2);
  border-top-color: #fff;
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

/* =====================================================
   SEGMENTS UPLOAD SECTION
   ===================================================== */

.segments-section {
  margin: 1.5rem 0;
  padding: 1.5rem;
  background: rgba(255, 255, 255, 0.02);
  border-radius: var(--radius);
  border: 1px dashed var(--border);
}

.segments-section .section-header {
  margin-bottom: 1.25rem;
}

.segments-section .section-header h3 {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin: 0 0 0.35rem;
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--text);
}

.segments-section .section-header small {
  color: var(--text-muted);
  font-size: 0.85rem;
}

.segments-list {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  margin-bottom: 1rem;
}

.segment-item {
  background: var(--bg-secondary);
  border-radius: 16px;
  border: 1px solid var(--border);
  overflow: hidden;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.segment-item:hover {
  border-color: var(--border-hover);
}

.segment-item.dragging {
  opacity: 0.5;
  border-color: var(--accent);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
}

.segment-item.drag-over {
  border-color: var(--accent);
  background: rgba(255, 255, 255, 0.04);
}

.segment-header {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.75rem 1rem;
  background: rgba(255, 255, 255, 0.03);
  border-bottom: 1px solid var(--border);
}

.segment-drag-handle {
  cursor: grab;
  color: var(--text-muted);
  padding: 0.25rem;
  transition: color 0.2s ease;
}

.segment-drag-handle:hover {
  color: var(--text);
}

.segment-drag-handle:active {
  cursor: grabbing;
}

.segment-number {
  font-weight: 600;
  font-size: 0.9rem;
  color: var(--text-secondary);
}

.segment-number .num {
  color: var(--text);
}

.segment-remove-btn {
  margin-left: auto;
  background: transparent;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  padding: 0.35rem 0.5rem;
  border-radius: 8px;
  transition: color 0.2s ease, background 0.2s ease;
}

.segment-remove-btn:hover {
  color: #ef4444;
  background: rgba(239, 68, 68, 0.1);
}

.segment-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  padding: 1rem;
}

@media (max-width: 600px) {
  .segment-content {
    grid-template-columns: 1fr;
  }
}

.segment-dropzone {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 1.5rem 1rem;
  border: 2px dashed var(--border);
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.01);
  cursor: pointer;
  transition: all 0.2s ease;
  text-align: center;
  min-height: 120px;
}

.segment-dropzone:hover {
  border-color: var(--border-hover);
  background: rgba(255, 255, 255, 0.03);
}

.segment-dropzone.drag-over {
  border-color: var(--accent);
  background: rgba(255, 255, 255, 0.06);
  border-style: solid;
}

.segment-dropzone.has-file {
  border-color: #22c55e;
  border-style: solid;
  background: rgba(34, 197, 94, 0.05);
}

.segment-dropzone i {
  font-size: 1.5rem;
  color: var(--text-muted);
}

.segment-dropzone.has-file i {
  color: #22c55e;
}

.segment-dropzone p {
  margin: 0;
  font-size: 0.9rem;
  color: var(--text-secondary);
  font-weight: 500;
}

.segment-dropzone small {
  font-size: 0.75rem;
  color: var(--text-muted);
}

.segment-dropzone .file-info {
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
  margin-top: 0.5rem;
  padding: 0.5rem 0.75rem;
  background: rgba(255, 255, 255, 0.05);
  border-radius: 8px;
  width: 100%;
}

.segment-dropzone .file-info .file-name {
  font-size: 0.85rem;
  color: var(--text);
  font-weight: 500;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.segment-dropzone .file-info .file-size {
  font-size: 0.75rem;
  color: var(--text-muted);
}

.video-dropzone i {
  color: #3b82f6;
}

.video-dropzone.has-file i {
  color: #22c55e;
}

.audio-dropzone i {
  color: #a855f7;
}

.audio-dropzone.has-file i {
  color: #22c55e;
}

/* Add segment button */
#addSegmentBtn {
  width: 100%;
  padding: 1rem;
  border: 2px dashed var(--border);
  border-radius: 12px;
  justify-content: center;
  font-size: 0.95rem;
}

#addSegmentBtn:hover {
  border-color: var(--border-hover);
  background: rgba(255, 255, 255, 0.03);
}

/* Empty state for segments */
.segments-empty {
  text-align: center;
  padding: 2rem 1rem;
  color: var(--text-muted);
}

.segments-empty i {
  font-size: 2rem;
  margin-bottom: 0.75rem;
  display: block;
}

/* =====================================================
   UPLOAD MODE TOGGLE (Video / Lumina)
   ===================================================== */

.upload-mode-toggle {
  display: flex;
  gap: 0.5rem;
  margin-bottom: 1.5rem;
  padding: 4px;
  background: rgba(255, 255, 255, 0.04);
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
}

.mode-btn {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.75rem 1rem;
  background: none;
  border: none;
  border-radius: 8px;
  color: var(--text-secondary);
  font-size: 0.95rem;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s;
}

.mode-btn:hover {
  color: var(--text);
  background: rgba(255, 255, 255, 0.05);
}

.mode-btn.is-active {
  color: var(--text);
  background: rgba(255, 255, 255, 0.1);
}

/* Lumina upload section */
.lumina-upload-section {
  margin: 1.5rem 0;
  padding: 1.5rem;
  background: rgba(255, 255, 255, 0.02);
  border-radius: var(--radius);
  border: 1px solid var(--border);
}

.lumina-upload-section .section-header {
  margin-bottom: 1rem;
}

.lumina-upload-section .section-header h3 {
  font-size: 1rem;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin: 0 0 0.25rem;
}

.lumina-upload-section .section-header small {
  color: var(--text-muted);
}

.lumina-dropzones {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}

@media (max-width: 640px) {
  .lumina-dropzones {
    grid-template-columns: 1fr;
  }
}

.lumina-dropzone i {
  color: #f59e0b;
}

.lumina-dropzone.has-file i {
  color: #22c55e;
}

.lumina-meta {
  margin-top: 1rem;
  display: flex;
  gap: 1.5rem;
  flex-wrap: wrap;
  padding: 0.75rem 1rem;
  background: rgba(255, 255, 255, 0.04);
  border-radius: 8px;
  font-size: 0.85rem;
  color: var(--text-secondary);
}

.lumina-meta-item strong {
  color: var(--text);
}

/* =====================================================
   BULK UPLOAD SECTION (AI Lecture)
   ===================================================== */

.bulk-upload-section {
  margin: 0;
  padding: 1.5rem;
  background: rgba(255, 255, 255, 0.02);
  border-radius: var(--radius);
  border: 1px solid var(--border);
}

.bulk-upload-section .section-header {
  margin-bottom: 1.25rem;
}

.bulk-upload-section .section-header h3 {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin: 0 0 0.35rem;
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--text);
}

.bulk-upload-section .section-header small {
  color: var(--text-muted);
  font-size: 0.85rem;
  line-height: 1.5;
}

.bulk-dropzone {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 2.5rem 1.5rem;
  border: 2px dashed var(--border);
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.01);
  cursor: pointer;
  transition: all 0.25s ease;
  text-align: center;
}

.bulk-dropzone:hover {
  border-color: var(--border-hover);
  background: rgba(255, 255, 255, 0.04);
}

.bulk-dropzone.drag-over {
  border-color: var(--accent);
  background: rgba(255, 255, 255, 0.08);
  border-style: solid;
  transform: scale(1.01);
}

.bulk-dropzone__icon {
  font-size: 2.5rem;
  color: var(--text-muted);
  opacity: 0.6;
  transition: all 0.2s;
}

.bulk-dropzone:hover .bulk-dropzone__icon {
  opacity: 1;
  color: var(--accent);
}

.bulk-dropzone__title {
  margin: 0;
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--text-secondary);
}

.bulk-dropzone__subtitle {
  margin: 0;
  font-size: 0.85rem;
  color: var(--text-muted);
}

/* Bulk file list */
.bulk-files-list {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  margin-top: 1rem;
}

.bulk-file-item {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.65rem 1rem;
  background: rgba(255, 255, 255, 0.03);
  border-radius: 10px;
  border: 1px solid var(--border);
  transition: all 0.2s ease;
}

.bulk-file-item.is-ready {
  border-color: rgba(34, 197, 94, 0.3);
  background: rgba(34, 197, 94, 0.04);
}

.bulk-file-item.is-missing {
  opacity: 0.5;
}

.bulk-file-icon {
  width: 28px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  color: var(--text-muted);
}

.bulk-file-item.is-ready .bulk-file-icon {
  color: var(--text-secondary);
}

.bulk-file-name {
  flex: 1;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-secondary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.bulk-file-item.is-ready .bulk-file-name {
  color: var(--text);
}

.bulk-file-size {
  font-size: 0.8rem;
  color: var(--text-muted);
  white-space: nowrap;
}

.bulk-file-status {
  width: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
}

.bulk-file-status.pending {
  color: var(--text-muted);
  opacity: 0.4;
}

.bulk-file-item.is-ready .bulk-file-status {
  color: #22c55e;
  opacity: 1;
}

.bulk-file-item.is-missing .bulk-file-status {
  color: var(--text-muted);
  opacity: 0.3;
}

/* =====================================================
   COVER SECTION (Auto-thumbnail)
   ===================================================== */

.cover-section {
  margin: 1.5rem 0;
  padding: 1.5rem;
  background: rgba(255, 255, 255, 0.02);
  border-radius: var(--radius);
  border: 1px solid var(--border);
}

.cover-preview-area {
  display: flex;
  gap: 1.5rem;
  align-items: flex-start;
}

@media (max-width: 600px) {
  .cover-preview-area {
    flex-direction: column;
  }
}

.cover-preview {
  flex: 0 0 280px;
  aspect-ratio: 16/9;
  background: var(--bg-secondary);
  border-radius: 12px;
  overflow: hidden;
  position: relative;
  border: 2px dashed var(--border);
}

.cover-preview.has-cover {
  border-style: solid;
  border-color: #22c55e;
}

.cover-preview img,
.cover-preview canvas {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.cover-placeholder {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  color: var(--text-muted);
  text-align: center;
  padding: 1rem;
}

.cover-placeholder i {
  font-size: 2rem;
  color: var(--text-muted);
  opacity: 0.5;
}

.cover-placeholder span {
  font-size: 0.85rem;
  line-height: 1.4;
}

.cover-info {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.cover-hint {
  margin: 0;
  font-size: 0.9rem;
  color: var(--text-secondary);
}

.cover-upload-btn {
  width: fit-content;
}

.btn-sm {
  padding: 0.5rem 1rem;
  font-size: 0.85rem;
}

/* =====================================================
   UPLOAD VIDEO PAGE STYLES
   ===================================================== */

/* Dashboard Layout */
.dashboard {
  max-width: 900px;
  margin: 0 auto;
  padding: 2rem 1.5rem;
}

.dashboard__head {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 1.5rem;
  margin-bottom: 2rem;
  flex-wrap: wrap;
}

.dashboard__head h1 {
  margin: 0 0 0.35rem;
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--text);
}

.dashboard__head p {
  margin: 0;
  color: var(--text-muted);
  font-size: 0.95rem;
}

/* Form Card */
#uploadForm {
  background: var(--bg-secondary);
  border-radius: 20px;
  padding: 2rem;
  border: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

/* Form Row */
.form-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.5rem;
}

/* Labels and Inputs */
#uploadForm label {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  font-size: 0.9rem;
  color: var(--text-secondary);
  font-weight: 500;
}

#uploadForm input[type="text"],
#uploadForm textarea {
  padding: 0.85rem 1rem;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 12px;
  color: var(--text);
  font-size: 0.95rem;
  font-family: inherit;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

#uploadForm input[type="text"]:focus,
#uploadForm textarea:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.15);
}

#uploadForm input::placeholder,
#uploadForm textarea::placeholder {
  color: var(--text-muted);
  opacity: 0.7;
}

#uploadForm textarea {
  resize: vertical;
  min-height: 100px;
}

#uploadForm small {
  font-size: 0.8rem;
  color: var(--text-muted);
  line-height: 1.4;
}

/* Label Header with AI Button */
.label-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
}

/* AI Button */
.btn-ai {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.4rem 0.75rem;
  background: linear-gradient(135deg, #6366f1, #8b5cf6);
  border: none;
  border-radius: 8px;
  color: #fff;
  font-size: 0.75rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s ease;
  white-space: nowrap;
}

.btn-ai:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(99, 102, 241, 0.3);
}

.btn-ai:disabled {
  opacity: 0.6;
  cursor: not-allowed;
  transform: none;
}

.btn-ai i {
  font-size: 0.7rem;
}

/* AI Loading Indicator */
.ai-loading {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.5rem 0;
}

.ai-loading-text {
  font-size: 0.85rem;
  color: var(--accent);
}

.typing-indicator {
  display: flex;
  gap: 4px;
}

.typing-indicator span {
  width: 6px;
  height: 6px;
  background: var(--accent);
  border-radius: 50%;
  animation: typing 1.4s infinite ease-in-out both;
}

.typing-indicator span:nth-child(1) {
  animation-delay: -0.32s;
}

.typing-indicator span:nth-child(2) {
  animation-delay: -0.16s;
}

@keyframes typing {

  0%,
  80%,
  100% {
    transform: scale(0.6);
    opacity: 0.5;
  }

  40% {
    transform: scale(1);
    opacity: 1;
  }
}

/* Optional Badge */
.optional-badge {
  font-size: 0.7rem;
  padding: 0.2rem 0.5rem;
  background: rgba(255, 255, 255, 0.08);
  border-radius: 4px;
  color: var(--text-muted);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.03em;
}

/* Checkbox */
.checkbox {
  flex-direction: row !important;
  align-items: center;
  gap: 0.75rem !important;
  cursor: pointer;
  padding: 0.5rem 0;
}

.checkbox input[type="checkbox"] {
  width: 18px;
  height: 18px;
  accent-color: var(--accent);
  cursor: pointer;
}

/* Form Actions */
.form-actions {
  display: flex;
  justify-content: flex-end;
  gap: 1rem;
  padding-top: 0.5rem;
}

/* Upload Progress */
.upload-progress {
  background: rgba(255, 255, 255, 0.03);
  border-radius: 12px;
  padding: 1.25rem;
  border: 1px solid var(--border);
}

.upload-progress__label {
  font-size: 0.9rem;
  color: var(--text-secondary);
  margin-bottom: 0.75rem;
}

.upload-progress__bar {
  height: 8px;
  background: rgba(255, 255, 255, 0.1);
  border-radius: 4px;
  overflow: hidden;
  margin-bottom: 0.5rem;
}

.upload-progress__value {
  height: 100%;
  background: linear-gradient(90deg, var(--accent), #8b5cf6);
  border-radius: 4px;
  width: 0%;
  transition: width 0.3s ease;
}

.upload-progress__percent {
  font-size: 0.85rem;
  color: var(--accent);
  font-weight: 600;
  text-align: right;
}

/* Speciality Picker */
.speciality-field {
  position: relative;
}

.speciality-picker {
  position: relative;
}

.speciality-picker__control {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.85rem 1rem;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 12px;
  color: var(--text-muted);
  font-size: 0.95rem;
  cursor: pointer;
  transition: border-color 0.2s ease;
  text-align: left;
}

.speciality-picker__control:hover {
  border-color: var(--border-hover);
}

.speciality-picker.is-open .speciality-picker__control {
  border-color: var(--accent);
}

.speciality-picker__chevron {
  font-size: 0.8rem;
  transition: transform 0.2s ease;
}

.speciality-picker.is-open .speciality-picker__chevron {
  transform: rotate(180deg);
}

.speciality-picker__dropdown {
  position: absolute;
  top: calc(100% + 4px);
  left: 0;
  right: 0;
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: 12px;
  z-index: 100;
  max-height: 300px;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
}

.speciality-picker__search {
  padding: 0.75rem 1rem;
  background: transparent;
  border: none;
  border-bottom: 1px solid var(--border);
  color: var(--text);
  font-size: 0.9rem;
}

.speciality-picker__search:focus {
  outline: none;
}

.speciality-picker__list {
  overflow-y: auto;
  max-height: 240px;
  padding: 0.5rem;
}

.speciality-option {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.65rem 0.75rem;
  background: transparent;
  border: none;
  border-radius: 8px;
  color: var(--text-secondary);
  font-size: 0.9rem;
  cursor: pointer;
  text-align: left;
  transition: background 0.15s ease;
}

.speciality-option:hover {
  background: rgba(255, 255, 255, 0.05);
}

.speciality-option.is-selected {
  background: rgba(99, 102, 241, 0.15);
  color: var(--text);
}

.speciality-option__check {
  color: var(--accent);
  font-weight: 600;
}

.speciality-empty {
  padding: 1rem;
  text-align: center;
  color: var(--text-muted);
  font-size: 0.85rem;
}

.speciality-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 0.5rem;
}

.speciality-tag {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.35rem 0.65rem;
  background: rgba(99, 102, 241, 0.15);
  border-radius: 6px;
  font-size: 0.8rem;
  color: var(--text);
}

.speciality-tag__remove {
  background: none;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  padding: 0;
  font-size: 1rem;
  line-height: 1;
  transition: color 0.15s ease;
}

.speciality-tag__remove:hover {
  color: #ef4444;
}

/* Notice Messages */
.notice {
  padding: 1rem 1.25rem;
  border-radius: 12px;
  font-size: 0.9rem;
  margin-bottom: 1.5rem;
}

.notice.danger {
  background: rgba(239, 68, 68, 0.12);
  border: 1px solid rgba(239, 68, 68, 0.3);
  color: #fca5a5;
}

.notice.success {
  background: rgba(34, 197, 94, 0.12);
  border: 1px solid rgba(34, 197, 94, 0.3);
  color: #86efac;
}

.notice.success a {
  color: #4ade80;
  font-weight: 600;
}

/* Mobile Responsive */
@media (max-width: 640px) {
  .dashboard {
    padding: 1.25rem 1rem;
  }

  .dashboard__head {
    flex-direction: column;
    gap: 1rem;
  }

  .dashboard__head h1 {
    font-size: 1.4rem;
  }

  #uploadForm {
    padding: 1.25rem;
    border-radius: 16px;
  }

  .form-row {
    grid-template-columns: 1fr;
  }

  .form-actions {
    flex-direction: column;
  }

  .form-actions .btn {
    width: 100%;
    justify-content: center;
  }
}

/* Utility to enforce hidden state */
[hidden] {
  display: none !important;
}

/* Test CTA Button */
.test-cta {
  margin-top: 20px;
  padding: 20px;
  background: linear-gradient(135deg, rgba(99, 102, 241, 0.1), rgba(139, 92, 246, 0.1));
  border-radius: 12px;
  border: 1px solid rgba(99, 102, 241, 0.2);
}

.test-cta .btn {
  width: 100%;
  justify-content: center;
  gap: 10px;
  font-size: 16px;
  padding: 14px 24px;
  text-decoration: none;
  display: flex;
  align-items: center;
}

.test-cta .btn i {
  font-size: 18px;
}

/* =====================================================
   LUMINA SLIDE PLAYER (for AI-generated lectures)
   ===================================================== */

.lumina-slide-wrapper {
  position: relative;
  width: 100%;
  aspect-ratio: 16 / 9;
  overflow: hidden;
}

.lumina-slide-scale {
  position: absolute;
  top: 0;
  left: 0;
  width: 1920px;
  height: 1080px;
  background: #fff;
  transform-origin: top left;
  font-family: Inter, -apple-system, BlinkMacSystemFont, sans-serif;
}

/* Animation wrapper — sits inside lumina-slide-scale, handles opacity/translate */
.lumina-anim-wrapper {
  position: absolute;
  inset: 0;
  width: 1920px;
  height: 1080px;
  opacity: 0;
  will-change: opacity, transform;
}

.lumina-anim-wrapper.instant {
  opacity: 1;
}

.lumina-anim-wrapper.entering {
  z-index: 1;
  animation: lumina-slide-enter 450ms cubic-bezier(0.4, 0, 0.2, 1) forwards;
}

.lumina-anim-wrapper.exiting {
  z-index: 2;
  animation: lumina-slide-exit 450ms cubic-bezier(0.4, 0, 0.2, 1) forwards;
}

/* Slide transition keyframes */
@keyframes lumina-slide-enter {
  from {
    opacity: 0;
  }

  to {
    opacity: 1;
  }
}

@keyframes lumina-slide-exit {
  from {
    opacity: 1;
    transform: translateY(0) scale(1);
  }

  to {
    opacity: 0;
    transform: translateY(-30px) scale(0.97);
  }
}

/* Per-element animation keyframes */
@keyframes lumina-word-enter {
  from {
    opacity: 0;
    transform: translateY(8px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.lumina-word-anim {
  display: inline-block;
  opacity: 0;
  animation: lumina-word-enter 600ms ease-out forwards;
}

@keyframes lumina-label-enter {
  from {
    opacity: 0;
    transform: translate(-15px, -5px);
  }

  to {
    opacity: 1;
    transform: translate(0, 0);
  }
}

.lumina-label-anim {
  opacity: 0;
  animation: lumina-label-enter 400ms ease-out 50ms forwards;
}

@keyframes lumina-fadeup {
  from {
    opacity: 0;
    transform: translateY(12px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.lumina-item-anim {
  opacity: 0;
  animation: lumina-fadeup forwards;
}

@keyframes lumina-stat-enter {
  from {
    opacity: 0;
    transform: translateY(15px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.lumina-stat-anim {
  opacity: 0;
  animation: lumina-stat-enter forwards;
}

@keyframes lumina-fade-in {
  from {
    opacity: 0;
  }

  to {
    opacity: 1;
  }
}

.lumina-quote-anim {
  opacity: 0;
  animation: lumina-fade-in 600ms ease-out 300ms forwards;
}

@keyframes lumina-spring-scale {
  0% {
    transform: scale(0);
  }

  60% {
    transform: scale(1.1);
  }

  80% {
    transform: scale(0.95);
  }

  100% {
    transform: scale(1);
  }
}

.lumina-checkmark-anim {
  transform: scale(0);
  animation: lumina-spring-scale 600ms cubic-bezier(0.34, 1.56, 0.64, 1) 200ms forwards;
}

/* Subtitle keyframes */
@keyframes lumina-sub-enter {
  from {
    opacity: 0;
    transform: translateY(6px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes lumina-sub-exit {
  from {
    opacity: 1;
    transform: translateY(0);
  }

  to {
    opacity: 0;
    transform: translateY(-4px);
  }
}

/* Subtitles — Lumina style (light bg, dark text).
   padding-bottom реагує на видимість нижньої панелі керування:
   - контроли приховані → субтитри низько (щоб не "з'їдати" простір слайду)
   - контроли видимі (is-paused | show-controls) → субтитри підняті вище панелі
   - у fullscreen власні значення (панель займає меншу частку екрану) */
.lumina-subtitles {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding-bottom: 2.5rem;
  padding-left: 8%;
  padding-right: 8%;
  display: flex;
  justify-content: center;
  pointer-events: none;
  z-index: 5;
  transition: padding-bottom 0.2s ease;
}

/* Non-fullscreen + контроли видимі → піднімаємо субтитри над панеллю */
.player-container.is-paused .lumina-subtitles,
.player-container.show-controls .lumina-subtitles {
  padding-bottom: 5.5rem;
}

.lumina-subtitles span {
  display: inline-block;
  background: rgb(234 234 234 / 41%);
  color: rgba(0, 0, 0, 0.55);
  backdrop-filter: blur(5px);
  padding: 10px 20px;
  border-radius: 15px;
  font-size: clamp(11px, 1.1vw, 15px);
  line-height: 1.625;
  text-align: center;
  max-width: 75%;
}

.lumina-subtitles span.sub-entering {
  animation: lumina-sub-enter 200ms ease forwards;
}

.lumina-subtitles span.sub-exiting {
  animation: lumina-sub-exit 200ms ease forwards;
}

/* Lumina in fullscreen */
.player-container:fullscreen .lumina-slide-wrapper,
.player-container.is-pseudo-fullscreen .lumina-slide-wrapper {
  height: 100vh;
  height: 100dvh;
  aspect-ratio: auto;
  background: #fff;
}

/* Fullscreen + контроли приховані → субтитри близько до низу (YouTube-style).
   Вища специфічність за non-fullscreen "controls visible" перекривається
   нижче, коли в fullscreen реально видно контроли. */
.player-container:fullscreen .lumina-subtitles,
.player-container:-webkit-full-screen .lumina-subtitles,
.player-container.is-pseudo-fullscreen .lumina-subtitles {
  padding-bottom: 1.5rem;
}

/* Fullscreen + контроли видимі → над панеллю */
.player-container:fullscreen.is-paused .lumina-subtitles,
.player-container:fullscreen.show-controls .lumina-subtitles,
.player-container:-webkit-full-screen.is-paused .lumina-subtitles,
.player-container:-webkit-full-screen.show-controls .lumina-subtitles,
.player-container.is-pseudo-fullscreen.is-paused .lumina-subtitles,
.player-container.is-pseudo-fullscreen.show-controls .lumina-subtitles {
  padding-bottom: 5rem;
}

/* =====================================================
   CUSTOM SUBTITLES (styled VTT over video)
   ===================================================== */

.custom-subtitles {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding-bottom: 40px;
  padding-left: 8%;
  padding-right: 8%;
  display: flex;
  justify-content: center;
  pointer-events: none;
  z-index: 5;
  transition: opacity 0.15s ease;
}

.custom-subtitles span {
  display: inline-block;
  background: rgba(240, 240, 240, 0.92);
  color: rgba(0, 0, 0, 0.6);
  padding: 10px 24px;
  border-radius: 10px;
  font-size: 12px;
  font-weight: 400;
  line-height: 1.6;
  text-align: center;
  max-width: 900px;
  ;
  animation: custom-sub-enter 180ms ease forwards;
}

@keyframes custom-sub-enter {
  from {
    opacity: 0;
    transform: translateY(4px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Raise subtitles when controls are visible */
.player-container.show-controls .custom-subtitles,
.player-container.is-paused .custom-subtitles {
  padding-bottom: 80px;
  transition: padding-bottom 0.25s ease;
}

/* Fullscreen */
.player-container:fullscreen .custom-subtitles,
.player-container.is-pseudo-fullscreen .custom-subtitles {
  padding-bottom: 2.5rem;
  transition: padding-bottom 0.25s ease;
}

.player-container:fullscreen.show-controls .custom-subtitles,
.player-container:fullscreen.is-paused .custom-subtitles,
.player-container.is-pseudo-fullscreen.show-controls .custom-subtitles,
.player-container.is-pseudo-fullscreen.is-paused .custom-subtitles {
  padding-bottom: 6rem;
}

.player-container:fullscreen .custom-subtitles span,
.player-container.is-pseudo-fullscreen .custom-subtitles span {
  font-size: 14px;
  padding: 14px 32px;
  border-radius: 12px;
}


/* Mobile */
@media (max-width: 768px) {
  .custom-subtitles {
    padding-bottom: 10px;
    padding-left: 4%;
    padding-right: 4%;
  }

  .custom-subtitles span {
    font-size: 12px;
    padding: 6px 14px;
    border-radius: 8px;
    max-width: 92%;
  }
}

@media (max-width: 480px) {
  .custom-subtitles span {
    font-size: 10px;
    padding: 5px 10px;
  }
}

/* Hide big play button overlay on Lumina poster when paused */
.player-container.is-lumina .player-big-play {
  z-index: 6;
}

/* Show controls always when Lumina is paused */
.player-container.is-lumina.is-paused .player-controls,
.player-container.is-lumina.show-controls .player-controls {
  opacity: 1;
}

/* Watch Course Block Styling */
.watch-course-block {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  margin-bottom: 2rem;
}

.watch-course-block .related-list {
  max-height: 480px;
  overflow-y: auto;
  padding: 10px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.watch-course-block .related-list::-webkit-scrollbar {
  width: 6px;
}

.watch-course-block .related-list::-webkit-scrollbar-thumb {
  background: rgba(255, 255, 255, 0.2);
  border-radius: 4px;
}

.watch-course-block .video-card {
  display: flex;
  flex-direction: row;
  align-items: center;
  gap: 12px;
  padding: 8px;
  border-radius: 8px;
  background: transparent;
  transition: background 0.2s;
  box-shadow: none;
}

.watch-course-block .video-card.active-lesson,
.watch-course-block .video-card:hover {
  background: rgba(255, 255, 255, 0.08);
  transform: none;
}

.watch-course-block .video-card .video-thumb {
  width: 100px;
  min-width: 100px;
  border-radius: 6px;
  margin-bottom: 0;
  aspect-ratio: 16/9;
}

.watch-course-block .video-card .video-info {
  padding: 0;
  flex: 1;
}

.watch-course-block .video-card .title {
  font-size: 0.9rem;
  line-height: 1.3;
  margin-bottom: 4px;
}

/* Modal for reporting errors */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.8);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 10000;
}

.modal-overlay[hidden] {
  display: none !important;
}

.modal-content {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  padding: 2rem;
  border-radius: var(--radius-sm);
  width: 90%;
  max-width: 400px;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.modal-content textarea {
  width: 100%;
  padding: 0.75rem;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border);
  color: #fff;
  border-radius: 8px;
  resize: vertical;
}

.modal-actions {
  display: flex;
  justify-content: flex-end;
  gap: 1rem;
}

/* ===================================================================
   REPORT MODAL — табами обирається тип репорту (інфо / озвучка).
   =================================================================== */
.report-modal-content {
  max-width: 640px !important;
}

.report-tabs {
  display: flex;
  gap: 0.3rem;
  padding: 0.25rem;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border);
  border-radius: 12px;
}

.report-tab {
  flex: 1;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  padding: 0.55rem 0.85rem;
  border: none;
  background: transparent;
  color: var(--text-secondary, #a1a1aa);
  font-family: inherit;
  font-size: 0.85rem;
  font-weight: 500;
  border-radius: 9px;
  cursor: pointer;
  transition: background 0.15s ease, color 0.15s ease;
}

.report-tab:hover {
  background: rgba(255, 255, 255, 0.05);
  color: #f4f4f5;
}

.report-tab.is-active {
  background: rgba(255, 255, 255, 0.1);
  color: #fff;
}

.report-tab-panel[hidden] {
  display: none;
}

.report-tab-panel {
  display: flex;
  flex-direction: column;
}

.report-voice-original {
  background: rgba(255, 255, 255, 0.025);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 0.85rem;
  font-size: 0.92rem;
  line-height: 1.65;
  color: #e4e4e7;
  max-height: 200px;
  overflow-y: auto;
  margin-bottom: 0.75rem;
  user-select: none;
}

/* Word spans inside the interactive narration */
.report-word {
  display: inline;
  padding: 0.05em 0.1em;
  border-radius: 4px;
  cursor: pointer;
  transition: background 0.12s ease;
}

.report-word:hover {
  background: #346338;
}

.report-word.is-focused {
  background: #18661e;
}

.report-letter {
  display: inline-block;
  padding: 0 0.02em;
  border-radius: 3px;
  transition: background 0.12s ease, color 0.12s ease;
}

.report-word.is-focused .report-letter {
  cursor: pointer;
}

.report-word.is-focused .report-letter:hover {
  background: rgba(167, 139, 250, 0.35);
}

.report-letter.is-stressed {
  color: #9cff85;
  font-weight: 700;
}

.report-voice-edit {
  font-family: inherit !important;
  line-height: 1.55 !important;
  min-height: 120px;
}

@media (max-width: 640px) {
  .report-tabs {
    flex-direction: column;
  }

  .report-modal-content {
    max-width: 100% !important;
  }
}

/* ─── Lecture feedback slide-in ────────────────────────────────────── */
.lecture-feedback-fab {
  position: fixed;
  bottom: 24px;
  right: 24px;
  z-index: 90;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.6rem 1rem;
  background: var(--bg-secondary);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 999px;
  font-family: inherit;
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  box-shadow: 0 6px 24px rgba(0, 0, 0, 0.35);
  transition: transform 0.2s ease, border-color 0.2s ease, background 0.2s ease;
}

.lecture-feedback-fab:hover {
  border-color: var(--border-hover);
  background: var(--bg-tertiary);
  transform: translateY(-1px);
}

.lecture-feedback-fab i.fa-comment-dots {
  color: #ffd166;
  font-size: 0.95rem;
}

.lecture-feedback-fab .fab-dot {
  position: absolute;
  top: -2px;
  right: -2px;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: #ef4444;
  box-shadow: 0 0 0 2px var(--bg);
  animation: lecture-feedback-pulse 1.8s ease-out infinite;
}

@keyframes lecture-feedback-pulse {

  0%,
  100% {
    box-shadow: 0 0 0 2px var(--bg), 0 0 0 0 rgba(239, 68, 68, 0.6);
  }

  50% {
    box-shadow: 0 0 0 2px var(--bg), 0 0 0 6px rgba(239, 68, 68, 0);
  }
}

.lecture-feedback-panel {
  position: fixed;
  bottom: 24px;
  right: 24px;
  z-index: 91;
  width: 340px;
  max-width: calc(100vw - 32px);
  padding: 1.25rem 1.25rem 1rem;
  background: var(--bg-secondary);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  box-shadow: 0 16px 48px rgba(0, 0, 0, 0.55);
  transform: translateY(20px);
  opacity: 0;
  pointer-events: none;
  transition: transform 0.28s ease, opacity 0.28s ease;
}

.lecture-feedback-panel.is-open {
  transform: translateY(0);
  opacity: 1;
  pointer-events: auto;
}

.lecture-feedback-panel h4 {
  margin: 0 2rem 0.35rem 0;
  font-size: 1rem;
  font-weight: 700;
  color: var(--text);
}

.lecture-feedback-sub {
  margin: 0 0 0.85rem;
  font-size: 0.82rem;
  color: var(--text-secondary);
  line-height: 1.45;
}

.lecture-feedback-close {
  position: absolute;
  top: 8px;
  right: 8px;
  width: 28px;
  height: 28px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: none;
  background: transparent;
  color: var(--text-muted);
  border-radius: 50%;
  cursor: pointer;
  transition: background 0.15s ease, color 0.15s ease;
}

.lecture-feedback-close:hover {
  background: rgba(255, 255, 255, 0.06);
  color: var(--text);
}

.lecture-feedback-stars {
  display: flex;
  gap: 0.35rem;
  margin-bottom: 0.75rem;
}

.lecture-feedback-stars .star {
  border: none;
  background: transparent;
  padding: 0.2rem;
  color: var(--text-muted);
  cursor: pointer;
  font-size: 1.2rem;
  transition: color 0.15s ease, transform 0.15s ease;
}

.lecture-feedback-stars .star:hover,
.lecture-feedback-stars .star:focus-visible {
  color: #ffd166;
  transform: scale(1.08);
  outline: none;
}

.lecture-feedback-stars .star.is-active {
  color: #ffd166;
}

.lecture-feedback-panel textarea {
  width: 100%;
  min-height: 80px;
  padding: 0.65rem 0.75rem;
  font-family: inherit;
  font-size: 0.88rem;
  color: var(--text);
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border);
  border-radius: 10px;
  resize: none;
  outline: none;
  box-sizing: border-box;
  transition: border-color 0.15s ease;
}

.lecture-feedback-panel textarea:focus {
  border-color: var(--border-hover);
}

.lecture-feedback-actions {
  display: flex;
  justify-content: flex-end;
  margin-top: 0.75rem;
}

.lecture-feedback-actions .btn {
  padding: 0.55rem 1.25rem;
  font-size: 0.85rem;
}

.lecture-feedback-actions .btn[disabled] {
  opacity: 0.45;
  cursor: not-allowed;
}

.lecture-feedback-thanks {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  margin-top: 0.5rem;
  padding: 0.6rem 0;
  color: #22c55e;
  font-size: 0.9rem;
  font-weight: 600;
}

@media (max-width: 520px) {
  .lecture-feedback-fab {
    bottom: 16px;
    right: 16px;
    padding: 0.55rem 0.9rem;
    font-size: 0.82rem;
  }

  .lecture-feedback-fab .fab-label {
    display: none;
  }

  .lecture-feedback-panel {
    bottom: 0;
    right: 0;
    left: 0;
    width: auto;
    max-width: 100%;
    border-radius: var(--radius-sm) var(--radius-sm) 0 0;
    padding-bottom: calc(1rem + env(safe-area-inset-bottom, 0px));
  }
}

/* =============================================================
   Dashboard 2.0 — author statistics page
   Reference: dark analytics dashboard with KPI cards, line chart,
   donut, viewer funnel, and top-lectures table with sparklines.
   ============================================================= */

.profile-dashboard {
  margin: 1.5rem 0 2rem;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.dashboard-toolbar {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  gap: 1rem;
  flex-wrap: wrap;
}

.dashboard-toolbar__title h1 {
  margin: 0;
  font-size: 1.85rem;
  font-weight: 600;
  letter-spacing: -0.01em;
}

.dashboard-toolbar__sub {
  margin: 0.25rem 0 0;
  color: var(--text-muted);
  font-size: 0.9rem;
}

.dashboard-toolbar__controls {
  display: flex;
  gap: 0.6rem;
  align-items: center;
}

/* Range pill (date selector) */
.range-pill {
  position: relative;
}

.range-pill__trigger {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.7rem 1.1rem;
  min-height: 44px;
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: 999px;
  color: var(--text);
  font-size: 0.9rem;
  font-weight: 500;
  font-family: inherit;
  cursor: pointer;
  transition: border-color 0.2s ease, background 0.2s ease, color 0.2s ease;
}

.range-pill__trigger:hover {
  border-color: var(--border-hover);
  background: var(--bg-tertiary);
}

.range-pill__trigger:focus-visible {
  outline: 2px solid var(--text);
  outline-offset: 2px;
}

.range-pill__trigger i {
  font-size: 0.8rem;
  color: var(--text-secondary);
}

.range-pill__chevron {
  transition: transform 0.2s ease;
}

.range-pill__trigger[aria-expanded="true"] .range-pill__chevron {
  transform: rotate(180deg);
}

.range-pill__menu {
  position: absolute;
  top: calc(100% + 0.5rem);
  right: 0;
  margin: 0;
  padding: 0.4rem;
  list-style: none;
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.5);
  min-width: 240px;
  z-index: 100;
}

.range-pill__menu li {
  list-style: none;
}

.range-pill__option {
  display: block;
  width: 100%;
  text-align: left;
  background: transparent;
  border: 0;
  padding: 0.7rem 0.85rem;
  border-radius: 8px;
  color: var(--text-secondary);
  font-size: 0.9rem;
  font-family: inherit;
  cursor: pointer;
  transition: background 0.15s ease, color 0.15s ease;
}

.range-pill__option:hover {
  background: var(--bg-tertiary);
  color: var(--text);
}

.range-pill__option:focus-visible {
  outline: 2px solid var(--text);
  outline-offset: -2px;
}

.range-pill__option--active {
  color: var(--text);
  background: rgba(255, 255, 255, 0.06);
  font-weight: 500;
}

/* KPI grid */
.kpi-grid {
  display: grid;
  gap: 1rem;
}

.kpi-grid--primary {
  grid-template-columns: repeat(4, 1fr);
}

.kpi-grid--secondary {
  grid-template-columns: repeat(3, 1fr);
}

.kpi-card {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.25rem 1.35rem;
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
  min-width: 0;
  transition: border-color 0.2s ease, background 0.2s ease;
}

.kpi-card:hover {
  border-color: var(--border-hover);
  background: rgba(255, 255, 255, 0.015);
}

.kpi-card--secondary {
  padding: 1.15rem 1.3rem;
}

.kpi-card__head {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  min-width: 0;
}

.kpi-card__icon {
  width: 32px;
  height: 32px;
  border-radius: 10px;
  background: rgba(255, 255, 255, 0.05);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: var(--text-secondary);
  font-size: 0.85rem;
  flex-shrink: 0;
}

.kpi-card--danger .kpi-card__icon {
  background: rgba(239, 68, 68, 0.12);
  color: #fca5a5;
}

.kpi-card__label {
  color: var(--text-muted);
  font-size: 0.82rem;
  font-weight: 500;
  letter-spacing: 0.01em;
  line-height: 1.3;
  flex: 1;
  min-width: 0;
}

.kpi-card__value {
  font-size: 2rem;
  font-weight: 600;
  letter-spacing: -0.02em;
  line-height: 1.1;
  margin: 0;
  font-variant-numeric: tabular-nums;
  word-break: break-word;
}

.kpi-card--secondary .kpi-card__value {
  font-size: 1.7rem;
}

.kpi-card--danger .kpi-card__value {
  color: #fca5a5;
}

.kpi-card__value-row {
  display: flex;
  align-items: flex-start;
  gap: 0.55rem;
  flex-wrap: wrap;
}

.kpi-card__delta {
  display: inline-flex;
  align-items: center;
  gap: 0.2rem;
  padding: 0.18rem 0.5rem;
  border-radius: 999px;
  font-size: 0.72rem;
  font-weight: 600;
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
  margin-top: 0.25rem;
  background: rgba(255, 255, 255, 0.05);
}

.kpi-card__delta.up {
  color: #4ade80;
  background: rgba(74, 222, 128, 0.12);
}

.kpi-card__delta.down {
  color: #f87171;
  background: rgba(248, 113, 113, 0.12);
}

.kpi-card__delta.flat {
  color: var(--text-muted);
}

/* Generic card */
.profile-dashboard .card {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem 1.6rem;
}

/* Charts row */
.dashboard-row {
  display: grid;
  gap: 1rem;
}

.dashboard-row--charts {
  grid-template-columns: 1fr;
}

.chart-card {
  display: flex;
  flex-direction: column;
  gap: 1.1rem;
}

.chart-card__header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 1rem;
  flex-wrap: wrap;
}

.chart-card__header h3 {
  margin: 0;
  font-size: 1.05rem;
  font-weight: 600;
}

.chart-card__sub {
  margin: 0.25rem 0 0;
  color: var(--text-muted);
  font-size: 0.85rem;
}

.metric-tabs {
  display: inline-flex;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 3px;
}

.metric-tab {
  border: 0;
  background: transparent;
  color: var(--text-muted);
  padding: 0.45rem 0.95rem;
  min-height: 32px;
  border-radius: 999px;
  font-size: 0.82rem;
  font-weight: 500;
  font-family: inherit;
  cursor: pointer;
  transition: background 0.2s ease, color 0.2s ease;
}

.metric-tab:hover {
  color: var(--text);
}

.metric-tab:focus-visible {
  outline: 2px solid var(--text);
  outline-offset: 2px;
}

.metric-tab.active {
  background: var(--text);
  color: var(--bg);
}

.chart-card__summary {
  display: flex;
  gap: 2rem;
  flex-wrap: wrap;
}

.chart-card__stat {
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
}

.chart-card__stat-label {
  color: var(--text-muted);
  font-size: 0.75rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.chart-card__stat strong {
  font-size: 1.1rem;
  font-weight: 600;
  font-variant-numeric: tabular-nums;
}

.chart-card__canvas {
  position: relative;
  width: 100%;
  height: 320px;
}

.chart-card__canvas svg {
  width: 100%;
  height: 100%;
  display: block;
  overflow: visible;
}

/* Chart line/grid/tooltip — refined */
#analyticsChart .chart-grid-line {
  stroke: rgba(255, 255, 255, 0.04);
  stroke-width: 1;
  stroke-dasharray: 3 4;
}

#analyticsChart .chart-baseline {
  stroke: rgba(255, 255, 255, 0.08);
  stroke-width: 1;
}

#analyticsChart .chart-axis text {
  fill: var(--text-muted);
  font-size: 11px;
  font-family: inherit;
}

#analyticsChart .chart-area {
  fill: url(#chartAreaGradient);
}

#analyticsChart .chart-line {
  fill: none;
  stroke: #ffffff;
  stroke-width: 2;
  stroke-linejoin: round;
  stroke-linecap: round;
}

#analyticsChart .chart-point {
  fill: var(--bg-secondary);
  stroke: #ffffff;
  stroke-width: 2;
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.15s ease;
}

#analyticsChart .chart-point.is-active {
  opacity: 1;
  r: 5;
}

#analyticsChart .chart-guideline {
  stroke: rgba(255, 255, 255, 0.18);
  stroke-width: 1;
  stroke-dasharray: 2 4;
  pointer-events: none;
}

#analyticsChart .chart-hit {
  fill: transparent;
  cursor: crosshair;
}

.chart-card .chart-tooltip {
  position: absolute;
  transform: translate(-50%, calc(-100% - 8px));
  background: var(--bg);
  border: 1px solid var(--border-hover);
  border-radius: 10px;
  padding: 0.5rem 0.75rem;
  font-size: 0.78rem;
  white-space: nowrap;
  pointer-events: none;
  display: flex;
  flex-direction: column;
  gap: 2px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
  z-index: 5;
}

.chart-card .chart-tooltip__label {
  color: var(--text-muted);
}

.chart-card .chart-tooltip__value {
  color: var(--text);
  font-weight: 600;
  font-size: 0.9rem;
}

.funnel__empty,
.top-table__empty {
  text-align: center;
  color: var(--text-muted);
  margin: 1rem 0 0;
  font-size: 0.9rem;
}

/* Funnel */
.funnel {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 0.7rem;
}

.funnel__row {
  display: grid;
  grid-template-columns: minmax(160px, 200px) 1fr;
  gap: 1.2rem;
  align-items: center;
}

.funnel__meta {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 0.5rem;
}

.funnel__label {
  color: var(--text-secondary);
  font-size: 0.9rem;
  font-weight: 500;
}

.funnel__count {
  color: var(--text);
  font-weight: 600;
  font-size: 0.9rem;
  font-variant-numeric: tabular-nums;
}

.funnel__bar {
  position: relative;
  height: 32px;
  background: rgba(255, 255, 255, 0.04);
  border-radius: 8px;
  overflow: hidden;
}

.funnel__fill {
  position: absolute;
  inset: 0 auto 0 0;
  background: linear-gradient(90deg, #fafafa 0%, #a1a1aa 100%);
  border-radius: 8px;
  transition: width 0.4s cubic-bezier(0.2, 0.8, 0.2, 1);
}

.funnel__percent {
  position: absolute;
  top: 50%;
  right: 0.85rem;
  transform: translateY(-50%);
  color: var(--text);
  font-weight: 600;
  font-size: 0.78rem;
  font-variant-numeric: tabular-nums;
  z-index: 1;
}

/* Top lectures table */
.top-table-card {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.top-table-card__header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 1rem;
}

.top-table-card__header h3 {
  margin: 0;
  font-size: 1.05rem;
  font-weight: 600;
}

.dashboard-link {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.85rem;
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  transition: color 0.15s ease;
}

.dashboard-link:hover {
  color: var(--text);
}

.top-table__scroll {
  overflow-x: auto;
  margin: 0 -0.5rem;
  padding: 0 0.5rem;
}

.top-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
  min-width: 640px;
}

.top-table thead th {
  text-align: left;
  font-weight: 500;
  color: var(--text-muted);
  font-size: 0.78rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  padding: 0.5rem 0.8rem;
  border-bottom: 1px solid var(--border);
}

.top-table thead th:nth-child(n+2) {
  text-align: right;
}

.top-table tbody td {
  padding: 0.95rem 0.8rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.04);
  vertical-align: middle;
  font-variant-numeric: tabular-nums;
}

.top-table tbody td:nth-child(n+2) {
  text-align: right;
}

.top-table tbody tr:last-child td {
  border-bottom: 0;
}

.top-table__row {
  cursor: pointer;
  transition: background 0.15s ease;
}

.top-table__row:hover,
.top-table__row:focus-visible {
  background: rgba(255, 255, 255, 0.03);
  outline: none;
}

.top-table__title-cell {
  display: flex;
  align-items: center;
  gap: 0.8rem;
  min-width: 240px;
}

.top-table__thumb {
  width: 48px;
  height: 48px;
  border-radius: 10px;
  background: var(--bg-tertiary) center / cover no-repeat;
  flex-shrink: 0;
  border: 1px solid var(--border);
}

.top-table__title {
  color: var(--text);
  font-weight: 500;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 320px;
}

.top-table__spark-cell {
  width: 110px;
}

.spark {
  display: block;
  margin-left: auto;
  overflow: visible;
}

.spark__line {
  fill: none;
  stroke: var(--text);
  stroke-width: 1.5;
  stroke-linejoin: round;
  stroke-linecap: round;
  opacity: 0.85;
}

/* Table tabular numbers + focus */
.top-table tbody td {
  font-variant-numeric: tabular-nums;
}

.top-table__row:focus-visible {
  outline: 2px solid var(--text);
  outline-offset: -2px;
}

.kpi-card:focus-visible {
  outline: 2px solid var(--text);
  outline-offset: 2px;
}

/* Responsive — 1024 / 720 / 540 */
@media (max-width: 1024px) {
  .dashboard-row--charts {
    grid-template-columns: 1fr;
  }

  .kpi-grid--primary {
    grid-template-columns: repeat(2, 1fr);
  }

  .kpi-grid--secondary {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (max-width: 720px) {
  .dashboard-toolbar {
    align-items: stretch;
  }

  .dashboard-toolbar__controls {
    width: 100%;
  }

  .range-pill {
    flex: 1;
  }

  .range-pill__trigger {
    width: 100%;
    justify-content: space-between;
  }

  .range-pill__menu {
    right: auto;
    left: 0;
    width: 100%;
  }

  .funnel__row {
    grid-template-columns: 1fr;
    gap: 0.45rem;
  }

  .chart-card__summary {
    gap: 1.25rem;
  }

  .kpi-card__value {
    font-size: 1.7rem;
  }
}

@media (max-width: 720px) {
  .kpi-grid--secondary {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 540px) {

  .kpi-grid--primary,
  .kpi-grid--secondary {
    grid-template-columns: 1fr;
  }

  .chart-card__header {
    flex-direction: column;
    align-items: stretch;
  }

  .metric-tabs {
    overflow-x: auto;
    flex-wrap: nowrap;
  }

  .metric-tab {
    white-space: nowrap;
  }

  .dashboard-toolbar__title h1 {
    font-size: 1.55rem;
  }
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {

  .profile-dashboard *,
  .profile-dashboard *::before,
  .profile-dashboard *::after {
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
  }
}