/* frontend/src/tutorials.css */

/* ═══════════════════════════════════════
   TUTORIALS BODY & LAYOUT
   ═══════════════════════════════════════ */

/* Override the body/app to allow scrolling */
body.tutorials-body {
  overflow: auto !important;
  height: auto !important;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* Scrollable root below the fixed header */
.tutorials-scroll-root {
  flex: 1;
  overflow-y: auto;
  overflow-x: hidden;
  width: 100%;
  padding-top: 64px; /* same height as .header */
}

/* Page content width */
.tutorials-page {
  width: 100%;
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 32px 80px;
  box-sizing: border-box;
}

/* ═══════════════════════════════════════
   HERO
   ═══════════════════════════════════════ */

.tutorials-hero {
  position: relative;
  padding: 52px 0 40px;
  text-align: center;
  overflow: hidden;
}

.tutorials-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 700px 320px at 50% 0%,
      rgba(99, 102, 241, 0.09) 0%, transparent 70%),
    radial-gradient(ellipse 400px 200px at 30% 80%,
      rgba(139, 92, 246, 0.05) 0%, transparent 70%);
  pointer-events: none;
}

.tutorials-hero-content {
  position: relative;
  z-index: 1;
}

.tutorials-hero-icon {
  font-size: 44px;
  display: block;
  margin-bottom: 14px;
  filter: drop-shadow(0 0 24px rgba(99, 102, 241, 0.45));
}

.tutorials-hero-title {
  font-size: 34px;
  font-weight: 800;
  letter-spacing: -0.5px;
  color: var(--text);
  margin: 0 0 14px;
}

.tutorials-hero-desc {
    font-size: 15px;
    color: #c4c4e1;
    max-width: 580px;
    margin: 0 auto 30px;
    line-height: 1.65;
}

.tutorials-search-wrap {
  position: relative;
  max-width: 460px;
  margin: 0 auto;
}

.tutorials-search-icon {
  position: absolute;
  left: 14px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 14px;
  opacity: 0.45;
  pointer-events: none;
}

.tutorials-search {
  width: 100%;
  padding: 13px 18px 13px 42px;
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: 12px;
  color: var(--text);
  font-size: 14px;
  outline: none;
  box-sizing: border-box;
  transition: border-color 0.2s, box-shadow 0.2s;
}

.tutorials-search:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.15);
}

/* ═══════════════════════════════════════
   STATS BAR
   ═══════════════════════════════════════ */

.tutorials-stats-bar {
  display: flex;
  justify-content: center;
  gap: 48px;
  padding: 22px 0;
  margin-bottom: 36px;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.tutorials-stat {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
}

.tutorials-stat-value {
  font-size: 24px;
  font-weight: 800;
  color: var(--accent);
  line-height: 1;
}

.tutorials-stat-label {
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.6px;
  color: var(--text3);
  font-weight: 600;
}

/* ═══════════════════════════════════════
   CONTAINER & GRID
   ═══════════════════════════════════════ */

.tutorials-container {
  width: 100%;
}

.tutorials-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 24px;
  width: 100%;
}

/* ═══════════════════════════════════════
   LOADING & EMPTY
   ═══════════════════════════════════════ */

.tutorials-loading {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 14px;
  padding: 100px 20px;
  color: var(--text3);
  font-size: 14px;
}

.tutorials-empty {
  text-align: center;
  padding: 100px 20px;
}

.tutorials-empty-icon {
  font-size: 52px;
  margin-bottom: 18px;
  opacity: 0.35;
}

.tutorials-empty-title {
  font-size: 22px;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 10px;
}

.tutorials-empty-desc {
  font-size: 14px;
  color: var(--text3);
}

/* ═══════════════════════════════════════
   TUTORIAL CARD
   ═══════════════════════════════════════ */

.tutorial-card {
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: 16px;
  overflow: hidden;
  transition: transform 0.22s, border-color 0.22s, box-shadow 0.22s;
  cursor: pointer;
  display: flex;
  flex-direction: column;
}

.tutorial-card:hover {
  transform: translateY(-4px);
  border-color: var(--accent);
  box-shadow:
    0 12px 40px rgba(99, 102, 241, 0.13),
    0 4px 12px rgba(0, 0, 0, 0.2);
}

/* ── Thumbnail ── */
.tutorial-thumb-wrap {
  position: relative;
  width: 100%;
  padding-top: 56.25%;
  background: var(--bg3);
  overflow: hidden;
  flex-shrink: 0;
}

.tutorial-thumb {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.3s;
}

.tutorial-card:hover .tutorial-thumb {
  transform: scale(1.05);
}

.tutorial-thumb-placeholder {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  background: linear-gradient(
    135deg,
    var(--bg3),
    rgba(99, 102, 241, 0.07)
  );
  gap: 10px;
}

.tutorial-thumb-placeholder-icon {
  font-size: 40px;
  opacity: 0.28;
}

.tutorial-thumb-placeholder-text {
  font-size: 12px;
  color: var(--text3);
  opacity: 0.45;
}

/* ── Play Overlay ── */
.tutorial-play-overlay {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0, 0, 0, 0.28);
  opacity: 0;
  transition: opacity 0.25s;
}

.tutorial-card:hover .tutorial-play-overlay {
  opacity: 1;
}

.tutorial-play-btn {
  width: 68px;
  height: 68px;
  border-radius: 50%;
  background: rgba(99, 102, 241, 0.92);
  backdrop-filter: blur(8px);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 28px rgba(99, 102, 241, 0.45);
  transition: transform 0.2s, background 0.2s;
}

.tutorial-play-btn:hover {
  transform: scale(1.1);
  background: var(--accent);
}

.tutorial-play-icon {
  font-size: 26px;
  color: #fff;
  margin-left: 4px;
}

/* ── Badges ── */
.tutorial-type-badge {
  position: absolute;
  top: 12px;
  left: 12px;
  padding: 4px 10px;
  border-radius: 8px;
  font-size: 10px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  backdrop-filter: blur(10px);
}

.tutorial-type-badge.embed {
  background: rgba(99, 102, 241, 0.22);
  color: var(--accent);
  border: 1px solid rgba(99, 102, 241, 0.3);
}

.tutorial-type-badge.upload {
  background: rgba(16, 185, 129, 0.18);
  color: var(--ok);
  border: 1px solid rgba(16, 185, 129, 0.28);
}

.tutorial-views-badge {
  position: absolute;
  top: 12px;
  right: 12px;
  padding: 4px 10px;
  border-radius: 8px;
  font-size: 10px;
  font-weight: 600;
  background: rgba(0, 0, 0, 0.55);
  color: #ccc;
  backdrop-filter: blur(8px);
}

/* ── Card Body ── */
.tutorial-card-body {
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  flex: 1;
}

.tutorial-card-title {
  font-size: 16px;
  font-weight: 700;
  color: var(--text);
  line-height: 1.35;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.tutorial-card-desc {
  font-size: 13px;
  color: var(--text3);
  line-height: 1.58;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
  flex: 1;
}

.tutorial-card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  padding-top: 14px;
  border-top: 1px solid var(--border);
  flex-wrap: wrap;
}

.tutorial-card-date {
  font-size: 11px;
  color: var(--text3);
  opacity: 0.65;
}

.tutorial-card-action {
  padding: 7px 15px;
  font-size: 12px;
  font-weight: 600;
  border-radius: 8px;
  background: var(--accent);
  color: #fff;
  border: none;
  cursor: pointer;
  transition: background 0.2s, transform 0.15s;
  white-space: nowrap;
  text-decoration: none;
  display: inline-block;
}

.tutorial-card-action:hover {
  background: var(--accent-hover, #4f46e5);
  transform: translateY(-1px);
}

.tutorial-card-watch-btn {
  padding: 7px 15px;
  font-size: 12px;
  font-weight: 600;
  border-radius: 8px;
  background: transparent;
  color: var(--accent);
  border: 1px solid var(--accent);
  cursor: pointer;
  transition: all 0.2s;
  white-space: nowrap;
}

.tutorial-card-watch-btn:hover {
  background: rgba(99, 102, 241, 0.1);
}

/* ═══════════════════════════════════════
   PAGINATION
   ═══════════════════════════════════════ */

.tutorials-pagination {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 18px;
  margin-top: 48px;
  padding-bottom: 24px;
}

.page-info {
  font-size: 13px;
  color: var(--text3);
  font-weight: 600;
}

.pagination-btn {
  width: auto !important;
  padding: 9px 22px !important;
  font-size: 13px !important;
}

/* ═══════════════════════════════════════
   VIDEO PLAYER MODAL
   ═══════════════════════════════════════ */

.video-modal-box {
  max-width: 920px;
  width: 95vw;
}

.video-modal-body {
  padding: 0 !important;
}

.video-player-wrap {
  position: relative;
  width: 100%;
  padding-top: 56.25%;
  background: #000;
  overflow: hidden;
}

.video-player-wrap iframe,
.video-player-wrap video {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  border: none;
}

.video-modal-info {
  padding: 24px;
}

.video-modal-desc {
  font-size: 14px;
  color: var(--text2);
  line-height: 1.7;
  margin-bottom: 16px;
  white-space: pre-wrap;
}

.video-modal-meta {
  display: flex;
  gap: 22px;
  margin-bottom: 16px;
}

.video-meta-item {
  font-size: 12px;
  color: var(--text3);
}

.video-modal-action {
  padding-top: 16px;
  border-top: 1px solid var(--border);
}

.video-action-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 11px 26px !important;
  font-size: 14px !important;
  font-weight: 600;
  text-decoration: none;
}

/* ═══════════════════════════════════════
   RESPONSIVE
   ═══════════════════════════════════════ */

@media (max-width: 1024px) {
  .tutorials-page {
    padding: 0 24px 60px;
  }

  .tutorials-grid {
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  }
}

@media (max-width: 768px) {
  .tutorials-scroll-root {
    padding-top: 56px;
  }

  .tutorials-page {
    padding: 0 16px 50px;
  }

  .tutorials-hero {
    padding: 36px 0 28px;
  }

  .tutorials-hero-title {
    font-size: 24px;
  }

  .tutorials-hero-desc {
    font-size: 13px;
  }

  .tutorials-stats-bar {
    gap: 24px;
    padding: 18px 0;
  }

  .tutorials-stat-value {
    font-size: 20px;
  }

  .tutorials-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .video-modal-box {
    width: 100vw;
    max-width: 100vw;
    border-radius: 0;
  }

  .tutorials-search-wrap {
    max-width: 100%;
  }
}

@media (max-width: 480px) {
  .tutorials-page {
    padding: 0 12px 40px;
  }

  .tutorials-hero {
    padding: 28px 0 20px;
  }

  .tutorials-hero-icon {
    font-size: 34px;
  }

  .tutorials-hero-title {
    font-size: 20px;
  }

  .tutorial-card-body {
    padding: 16px;
  }

  .tutorials-stats-bar {
    gap: 16px;
    padding: 14px 0;
  }

  .tutorials-stat-value {
    font-size: 18px;
  }
}