/* ════════════════════════════════════════════════
   Playlist / Course Mode
   ════════════════════════════════════════════════ */

/* ══════════════════════════════════════════════════════
   PLAYLIST / COURSE MODE
   ══════════════════════════════════════════════════════ */

.playlist-section {
    min-height: 100vh;
    padding: 100px 24px 60px;
}
.pl-content {
    max-width: 900px;
    margin: 0 auto;
}

/* ── Header ── */
.pl-header {
    margin-bottom: 28px;
}
.pl-back-btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    background: none;
    border: none;
    color: var(--text-secondary);
    font-family: var(--font);
    font-size: 13px;
    font-weight: 600;
    cursor: pointer;
    padding: 8px 14px;
    border-radius: 10px;
    transition: all 0.2s;
    margin-bottom: 18px;
}
.pl-back-btn:hover {
    color: var(--accent);
    background: rgba(139,92,246,0.1);
}
.pl-tag {
    display: inline-block;
    padding: 5px 14px;
    background: linear-gradient(135deg, rgba(139,92,246,0.15), rgba(79,70,229,0.1));
    border: 1px solid rgba(139,92,246,0.25);
    border-radius: 20px;
    font-size: 12px;
    font-weight: 700;
    color: #a78bfa;
    margin-bottom: 14px;
    letter-spacing: 0.3px;
}
.pl-title {
    font-size: 28px;
    font-weight: 800;
    color: var(--text-primary);
    line-height: 1.3;
    margin: 0 0 6px;
}
.pl-author {
    font-size: 14px;
    color: var(--text-secondary);
    margin: 0 0 12px;
}
.pl-stats {
    display: flex;
    gap: 18px;
}
.pl-stat {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 13px;
    color: var(--text-secondary);
    font-weight: 500;
}
.pl-stat svg { opacity: 0.6; }

/* ── Progress ── */
.pl-progress-wrap {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 14px;
    padding: 18px 22px;
    margin-bottom: 24px;
}
.pl-progress-info {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 10px;
}
.pl-progress-label {
    font-size: 13px;
    font-weight: 600;
    color: var(--text-primary);
}
.pl-progress-pct {
    font-size: 14px;
    font-weight: 800;
    color: var(--accent);
}
.pl-progress-bar {
    width: 100%;
    height: 8px;
    background: rgba(139,92,246,0.1);
    border-radius: 4px;
    overflow: hidden;
}
.pl-progress-fill {
    height: 100%;
    width: 0%;
    background: linear-gradient(90deg, #8b5cf6, #a78bfa, #c4b5fd);
    border-radius: 4px;
    transition: width 0.6s cubic-bezier(0.4,0,0.2,1);
}

/* ── Video list ── */
.pl-video-list {
    display: flex;
    flex-direction: column;
    gap: 8px;
}
.pl-video-card {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 14px 18px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 14px;
    cursor: pointer;
    transition: all 0.25s ease;
    position: relative;
    overflow: hidden;
}
.pl-video-card::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(139,92,246,0.06), transparent);
    opacity: 0;
    transition: opacity 0.3s;
}
.pl-video-card:hover {
    border-color: rgba(139,92,246,0.4);
    transform: translateY(-2px);
    box-shadow: 0 8px 30px rgba(139,92,246,0.12);
}
.pl-video-card:hover::before { opacity: 1; }
.pl-video-card.active {
    border-color: var(--accent);
    background: rgba(139,92,246,0.06);
}
.pl-video-card.analyzed {
    border-left: 3px solid #10b981;
}

.pl-video-num {
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 10px;
    background: rgba(139,92,246,0.1);
    color: var(--accent);
    font-size: 13px;
    font-weight: 800;
    flex-shrink: 0;
    position: relative;
    z-index: 1;
}
.pl-video-card.analyzed .pl-video-num {
    background: rgba(16,185,129,0.15);
    color: #10b981;
}

.pl-video-thumb {
    width: 120px;
    height: 68px;
    border-radius: 8px;
    object-fit: cover;
    flex-shrink: 0;
    position: relative;
    z-index: 1;
}

.pl-video-info {
    flex: 1;
    min-width: 0;
    position: relative;
    z-index: 1;
}
.pl-video-title {
    font-size: 14px;
    font-weight: 600;
    color: var(--text-primary);
    line-height: 1.4;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    margin-bottom: 4px;
}
.pl-video-duration {
    font-size: 11px;
    color: var(--text-secondary);
    font-weight: 500;
}

.pl-video-status {
    flex-shrink: 0;
    position: relative;
    z-index: 1;
}
.pl-status-badge {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 4px 12px;
    border-radius: 8px;
    font-size: 11px;
    font-weight: 700;
}
.pl-status-done {
    background: rgba(16,185,129,0.12);
    color: #34d399;
    border: 1px solid rgba(16,185,129,0.25);
}
.pl-status-current {
    background: rgba(139,92,246,0.12);
    color: #a78bfa;
    border: 1px solid rgba(139,92,246,0.3);
    animation: pulse 2s ease-in-out infinite;
}
.pl-status-pending {
    background: rgba(255,255,255,0.04);
    color: var(--text-secondary);
    border: 1px solid var(--border);
}
.pl-play-overlay {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(0,0,0,0.3);
    border-radius: 8px;
    opacity: 0;
    transition: opacity 0.2s;
}
.pl-video-card:hover .pl-play-overlay { opacity: 1; }

/* ── Playlist nav bar (in results view) ── */
.pl-nav-bar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 10px 24px;
    background: linear-gradient(135deg, rgba(139,92,246,0.08), rgba(79,70,229,0.04));
    border-bottom: 1px solid rgba(139,92,246,0.15);
    backdrop-filter: blur(10px);
    position: sticky;
    top: 64px;
    z-index: 40;
}
.pl-nav-btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 7px 16px;
    border-radius: 10px;
    border: 1px solid rgba(139,92,246,0.25);
    background: rgba(139,92,246,0.08);
    color: #a78bfa;
    font-family: var(--font);
    font-size: 12px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
}
.pl-nav-btn:hover {
    background: rgba(139,92,246,0.18);
    border-color: rgba(139,92,246,0.5);
    transform: translateY(-1px);
}
.pl-nav-btn:disabled {
    opacity: 0.35;
    cursor: not-allowed;
    transform: none;
}
.pl-nav-info {
    display: flex;
    align-items: center;
    gap: 14px;
}
.pl-nav-pos {
    font-size: 13px;
    font-weight: 700;
    color: var(--text-primary);
}
.pl-nav-list-btn {
    padding: 5px 14px;
    border-radius: 8px;
    border: 1px solid var(--border);
    background: rgba(255,255,255,0.04);
    color: var(--text-secondary);
    font-family: var(--font);
    font-size: 12px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
}
.pl-nav-list-btn:hover {
    background: rgba(139,92,246,0.1);
    border-color: rgba(139,92,246,0.3);
    color: var(--accent);
}

/* ── Responsive ── */
@media (max-width: 700px) {
    .playlist-section { padding: 80px 14px 40px; }
    .pl-title { font-size: 20px; }
    .pl-video-card { padding: 10px 12px; gap: 10px; }
    .pl-video-thumb { width: 80px; height: 45px; }
    .pl-video-title { font-size: 13px; }
    .pl-nav-bar { padding: 8px 14px; }
    .pl-nav-btn { padding: 5px 10px; font-size: 11px; }
    .pl-nav-pos { font-size: 12px; }
}