/* ═══════════════════════════════════════════════════════════
   Signal Pages — Shared player + tracklist CSS
   Extracted from the-signal.html for reuse across standalone pages
   ═══════════════════════════════════════════════════════════ */

:root {
    --void: #050508;
    --surface: #0a0a10;
    --panel: rgba(12, 12, 20, 0.85);
    --panel-border: rgba(212, 175, 55, 0.15);
    --gold: #d4af37;
    --gold-dim: rgba(212, 175, 55, 0.6);
    --gold-glow: rgba(212, 175, 55, 0.3);
    --amber: #f59e0b;
    --iron: #c4956a;
    --teal: #00ffcc;
    --purple: #8b5cf6;
    --text: #e8e4d9;
    --text-dim: #8a8578;
    --text-muted: #5a5650;
}

/* ═══ BASE RESETS ═══ */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
    background: var(--void);
    color: var(--text);
    font-family: 'Cormorant Garamond', Georgia, serif;
    font-size: 18px;
    line-height: 1.8;
    overflow-x: hidden;
    min-height: 100vh;
}

body::before {
    content: '';
    position: fixed;
    top: 0; left: 0; width: 100%; height: 100%;
    background:
        radial-gradient(ellipse 90% 50% at 30% 15%, rgba(212, 175, 55, 0.08) 0%, transparent 50%),
        radial-gradient(ellipse 80% 60% at 70% 60%, rgba(139, 92, 246, 0.06) 0%, transparent 50%),
        radial-gradient(ellipse 100% 80% at 50% 40%, rgba(196, 149, 106, 0.05) 0%, transparent 60%);
    pointer-events: none;
    z-index: -1;
    animation: breathe 12s ease-in-out infinite;
}

@keyframes breathe {
    0%, 100% { opacity: 0.6; }
    50% { opacity: 1; }
}

/* ═══ BADGES ═══ */
.badge {
    font-family: 'Space Mono', monospace;
    font-size: 0.55rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    padding: 0.2rem 0.6rem;
    border-radius: 3px;
    border: 1px solid;
}
.badge-freq { color: var(--amber); border-color: rgba(245, 158, 11, 0.3); }
.badge-voice { color: var(--teal); border-color: rgba(0, 255, 204, 0.2); }
.badge-count { color: var(--purple); border-color: rgba(139, 92, 246, 0.2); }

/* ═══ FREQUENCY PULSE LINE ═══ */
.freq-line {
    width: 200px;
    height: 1px;
    margin: 0 auto;
    background: linear-gradient(90deg, transparent, var(--gold), transparent);
    animation: freq-pulse 4s ease-in-out infinite;
}
@keyframes freq-pulse {
    0%, 100% { opacity: 0.15; transform: scaleX(0.4); }
    50% { opacity: 0.7; transform: scaleX(1); }
}

/* ═══ SERIES HERO SECTIONS ═══ */
.series-hero {
    position: relative;
    min-height: 340px;
    padding: 3rem 1.5rem 2rem;
    margin-bottom: 0.5rem;
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    overflow: hidden;
}
.series-hero-bg {
    position: absolute;
    top: 0; left: 0; right: 0; bottom: 0;
    background-size: cover;
    background-position: center;
    z-index: 0;
}
.series-hero-bg::after {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0; bottom: 0;
    background: linear-gradient(180deg,
        rgba(5, 5, 8, 0.5) 0%,
        rgba(5, 5, 8, 0.7) 40%,
        rgba(5, 5, 8, 0.95) 100%);
}
.series-hero-content {
    position: relative;
    z-index: 1;
    max-width: 900px;
    margin: 0 auto;
    width: 100%;
}
.series-hero .freq-line {
    width: 120px;
    margin: 0 0 1rem 0;
}
.series-hero-title {
    font-family: 'Cinzel', serif;
    font-size: clamp(1.5rem, 4vw, 2.2rem);
    font-weight: 400;
    color: var(--text);
    letter-spacing: 0.1em;
    margin-bottom: 0.4rem;
}
.series-hero-desc {
    font-size: 0.95rem;
    color: var(--text-dim);
    max-width: 700px;
    line-height: 1.7;
    margin-bottom: 1rem;
}
.series-hero-actions {
    display: flex;
    align-items: center;
    gap: 1rem;
    flex-wrap: wrap;
}
.series-play-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background: rgba(212, 175, 55, 0.12);
    border: 1px solid var(--gold-dim);
    border-radius: 6px;
    padding: 0.5rem 1.2rem;
    color: var(--gold);
    font-family: 'Cinzel', serif;
    font-size: 0.8rem;
    letter-spacing: 0.08em;
    cursor: pointer;
    transition: all 0.2s;
}
.series-play-btn:hover {
    background: rgba(212, 175, 55, 0.2);
    border-color: var(--gold);
}
.series-toggle-btn {
    background: none;
    border: 1px solid var(--panel-border);
    border-radius: 6px;
    padding: 0.5rem 1.2rem;
    color: var(--text-dim);
    font-family: 'Space Mono', monospace;
    font-size: 0.65rem;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    cursor: pointer;
    transition: all 0.2s;
}
.series-toggle-btn:hover {
    border-color: var(--gold-dim);
    color: var(--text);
}

/* ═══ INLINE TRACK LIST ═══ */
.series-tracklist {
    max-width: 900px;
    margin: 0 auto;
    padding: 0 1.5rem;
}
.series-tracklist.collapsible {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.5s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}
.series-tracklist.collapsible.expanded {
    max-height: 2000px;
}
.series-tracklist-inner {
    padding: 0.5rem 0 2.5rem;
}
.track-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 0.8rem 1rem;
    border-radius: 8px;
    cursor: pointer;
    transition: background 0.2s;
    border-bottom: 1px solid rgba(212, 175, 55, 0.04);
}
.track-item:last-child { border-bottom: none; }
.track-item:hover {
    background: rgba(212, 175, 55, 0.06);
}
.track-item.active {
    background: rgba(212, 175, 55, 0.1);
}
.track-num {
    font-family: 'Space Mono', monospace;
    font-size: 0.7rem;
    color: var(--text-muted);
    min-width: 28px;
    text-align: center;
    flex-shrink: 0;
}
.track-item.active .track-num {
    color: var(--gold);
}
.track-info {
    flex: 1;
    min-width: 0;
}
.track-title {
    font-family: 'Cormorant Garamond', serif;
    font-size: 1.05rem;
    color: var(--text);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}
.track-item.active .track-title {
    color: var(--gold);
}
.track-desc {
    font-size: 0.78rem;
    color: var(--text-muted);
    line-height: 1.4;
    display: -webkit-box;
    -webkit-line-clamp: 1;
    -webkit-box-orient: vertical;
    overflow: hidden;
}
.track-duration {
    font-family: 'Space Mono', monospace;
    font-size: 0.6rem;
    color: var(--text-muted);
    flex-shrink: 0;
}
.track-item.active .track-duration { color: var(--gold-dim); }

/* ═══ GAVEL WAVEFORM WIDGET ═══ */
.gavel-widget {
    max-width: 900px;
    margin: 0 auto;
    padding: 0 1.5rem;
}
.gavel-inner {
    position: relative;
    background: linear-gradient(135deg, rgba(212, 175, 55, 0.04) 0%, rgba(8, 8, 14, 0.95) 60%);
    border: 1px solid rgba(212, 175, 55, 0.12);
    border-radius: 10px;
    padding: 1.4rem 1.6rem 1.2rem;
    cursor: pointer;
    transition: all 0.3s ease;
    overflow: hidden;
}
.gavel-inner:hover {
    border-color: rgba(212, 175, 55, 0.35);
    box-shadow: 0 0 30px rgba(212, 175, 55, 0.06);
}
.gavel-inner::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(212, 175, 55, 0.3), transparent);
}
.gavel-label {
    display: flex;
    align-items: center;
    gap: 0.8rem;
    margin-bottom: 0.8rem;
}
.gavel-icon {
    width: 28px; height: 28px;
    border: 1px solid rgba(212, 175, 55, 0.25);
    border-radius: 50%;
    display: flex; align-items: center; justify-content: center;
    font-size: 0.75rem;
    color: var(--gold-dim);
    flex-shrink: 0;
    transition: all 0.2s;
}
.gavel-inner:hover .gavel-icon {
    background: rgba(212, 175, 55, 0.15);
    border-color: var(--gold);
    color: var(--gold);
}
.gavel-inner.playing .gavel-icon {
    background: rgba(212, 175, 55, 0.2);
    border-color: var(--gold);
    animation: gavel-pulse 0.6s ease-out;
}
@keyframes gavel-pulse {
    0% { transform: scale(1); box-shadow: 0 0 0 0 rgba(212, 175, 55, 0.4); }
    50% { transform: scale(1.15); box-shadow: 0 0 12px 4px rgba(212, 175, 55, 0.2); }
    100% { transform: scale(1); box-shadow: 0 0 0 0 rgba(212, 175, 55, 0); }
}
.gavel-text {
    font-family: 'Space Mono', monospace;
    font-size: 0.55rem;
    text-transform: uppercase;
    letter-spacing: 0.15em;
    color: var(--text-muted);
}
.gavel-text strong {
    color: var(--gold-dim);
    font-weight: 400;
}
.gavel-canvas-wrap {
    position: relative;
    width: 100%;
    height: 80px;
    margin-bottom: 0.6rem;
    border-radius: 6px;
    overflow: hidden;
    background: rgba(0, 0, 0, 0.3);
}
.gavel-canvas-wrap canvas {
    display: block;
    width: 100%;
    height: 100%;
}
.gavel-playhead {
    position: absolute;
    top: 0; bottom: 0;
    left: 0;
    width: 2px;
    background: var(--gold);
    box-shadow: 0 0 6px rgba(212, 175, 55, 0.6);
    opacity: 0;
    transition: opacity 0.15s;
    pointer-events: none;
}
.gavel-inner.playing .gavel-playhead {
    opacity: 1;
}
.gavel-flash {
    position: absolute;
    top: 0; left: 0; right: 0; bottom: 0;
    background: radial-gradient(ellipse at center, rgba(212, 175, 55, 0.15), transparent 70%);
    opacity: 0;
    pointer-events: none;
    border-radius: 6px;
}
.gavel-inner.playing .gavel-flash {
    animation: gavel-strike-flash 0.4s ease-out;
}
@keyframes gavel-strike-flash {
    0% { opacity: 1; }
    100% { opacity: 0; }
}
.gavel-quote {
    font-family: 'Cormorant Garamond', serif;
    font-size: 0.85rem;
    font-style: italic;
    color: var(--text-dim);
    line-height: 1.5;
    opacity: 0.7;
}
.gavel-quote em {
    color: var(--gold-dim);
    font-style: normal;
}
.gavel-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 0.4rem;
}
.gavel-credit {
    font-family: 'Space Mono', monospace;
    font-size: 0.5rem;
    color: var(--text-muted);
    opacity: 0.5;
    letter-spacing: 0.05em;
}
.gavel-freq {
    font-family: 'Space Mono', monospace;
    font-size: 0.5rem;
    color: var(--amber);
    letter-spacing: 0.08em;
    opacity: 0.7;
}

/* ═══ CONVERSATIONS SECTION ═══ */
.conversations-section {
    max-width: 1100px;
    margin: 1rem auto 3rem;
    padding: 0 1.5rem;
}
.section-label {
    font-family: 'Cinzel', serif;
    font-size: 1.3rem;
    font-weight: 400;
    color: var(--gold);
    letter-spacing: 0.1em;
    margin-bottom: 0.5rem;
}
.section-desc {
    font-size: 0.9rem;
    color: var(--text-dim);
    margin-bottom: 1.5rem;
    max-width: 700px;
}
.convo-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.2rem;
}
.convo-card {
    background: var(--panel);
    border: 1px solid var(--panel-border);
    border-radius: 10px;
    padding: 1.5rem;
    cursor: pointer;
    transition: all 0.3s ease;
    position: relative;
}
.convo-card:hover {
    border-color: var(--gold-dim);
    transform: translateY(-3px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3), 0 0 15px rgba(212, 175, 55, 0.06);
}
.convo-card.active {
    border-color: var(--gold);
}
.convo-voices {
    font-family: 'Space Mono', monospace;
    font-size: 0.6rem;
    color: var(--teal);
    text-transform: uppercase;
    letter-spacing: 0.12em;
    margin-bottom: 0.5rem;
}
.convo-title {
    font-family: 'Cinzel', serif;
    font-size: 1.1rem;
    color: var(--text);
    margin-bottom: 0.5rem;
}
.convo-desc {
    font-size: 0.82rem;
    color: var(--text-dim);
    line-height: 1.6;
}
.convo-meta {
    display: flex;
    align-items: center;
    gap: 0.8rem;
    margin-top: 0.8rem;
}

/* ═══ SINGLES LIST ═══ */
.singles-section {
    max-width: 900px;
    margin: 0 auto 3rem;
    padding: 0 1.5rem;
}
.single-item {
    display: flex;
    align-items: center;
    gap: 1.2rem;
    padding: 1rem 1.2rem;
    border-radius: 10px;
    cursor: pointer;
    transition: all 0.2s;
    border-bottom: 1px solid rgba(212, 175, 55, 0.06);
}
.single-item:last-child { border-bottom: none; }
.single-item:hover {
    background: rgba(212, 175, 55, 0.05);
}
.single-item.active {
    background: rgba(212, 175, 55, 0.1);
}
.single-play-icon {
    width: 40px; height: 40px;
    border: 1px solid var(--panel-border);
    border-radius: 50%;
    display: flex; align-items: center; justify-content: center;
    color: var(--text-dim);
    font-size: 0.75rem;
    flex-shrink: 0;
    transition: all 0.2s;
}
.single-item:hover .single-play-icon {
    border-color: var(--gold-dim);
    color: var(--gold);
}
.single-info { flex: 1; min-width: 0; }
.single-title {
    font-family: 'Cinzel', serif;
    font-size: 1rem;
    color: var(--text);
}
.single-item.active .single-title { color: var(--gold); }
.single-desc {
    font-size: 0.78rem;
    color: var(--text-dim);
    line-height: 1.5;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}
.single-badges {
    display: flex;
    gap: 0.5rem;
    margin-top: 0.3rem;
}

/* ═══ PLAYER (fixed bottom) ═══ */
.signal-player {
    position: fixed;
    bottom: 0; left: 0; right: 0;
    background: linear-gradient(180deg, rgba(8, 8, 12, 0.96) 0%, rgba(5, 5, 8, 0.99) 100%);
    backdrop-filter: blur(24px);
    -webkit-backdrop-filter: blur(24px);
    border-top: 1px solid rgba(212, 175, 55, 0.12);
    z-index: 500;
    transform: translateY(100%);
    transition: transform 300ms ease-in;
}
.signal-player[data-state="loading"],
.signal-player[data-state="playing"],
.signal-player[data-state="paused"] {
    transform: translateY(0);
    transition: transform 500ms cubic-bezier(0.34, 1.56, 0.64, 1);
}

.sp-inner {
    max-width: 900px;
    margin: 0 auto;
    padding: 0.7rem 1.2rem 0.6rem;
}

/* ── Info row ── */
.sp-info {
    display: flex; align-items: center; gap: 0.8rem;
    margin-bottom: 0.4rem;
    opacity: 0; transform: translateY(6px);
    transition: opacity 150ms ease, transform 150ms ease;
}
.signal-player:not([data-state="dormant"]) .sp-info {
    opacity: 1; transform: translateY(0);
    transition: opacity 250ms ease 80ms, transform 250ms ease 80ms;
}
.sp-series {
    font-family: 'Space Mono', monospace;
    font-size: 0.55rem;
    color: var(--amber);
    text-transform: uppercase;
    letter-spacing: 0.12em;
    flex-shrink: 0;
}
.sp-title {
    font-family: 'Cinzel', serif;
    font-size: 0.95rem;
    color: var(--text);
    flex: 1;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}
.sp-close {
    background: none; border: none;
    color: var(--text-muted);
    cursor: pointer; font-size: 1.2rem;
    padding: 0.3rem;
    transition: color 0.2s;
    flex-shrink: 0;
}
.sp-close:hover { color: var(--text); }

/* ── Transport row ── */
.sp-transport {
    display: flex; align-items: center; gap: 0.6rem;
}

.sp-btn {
    background: transparent;
    border: 1px solid var(--panel-border);
    color: var(--text-dim);
    width: 30px; height: 30px;
    border-radius: 50%;
    cursor: pointer;
    display: flex; align-items: center; justify-content: center;
    transition: all 0.2s;
    flex-shrink: 0;
    opacity: 0; transform: translateY(4px);
}
.signal-player:not([data-state="dormant"]) .sp-btn {
    opacity: 1; transform: translateY(0);
    transition: all 0.2s, opacity 250ms ease 120ms, transform 250ms ease 120ms;
}
.sp-btn:hover { border-color: var(--gold); color: var(--gold); }
.sp-btn svg { pointer-events: none; }

/* ── Play button ── */
.sp-play {
    width: 44px; height: 44px;
    border-radius: 50%;
    border: 1px solid rgba(212, 175, 55, 0.3);
    background: transparent;
    color: var(--gold);
    cursor: pointer;
    display: flex; align-items: center; justify-content: center;
    position: relative;
    flex-shrink: 0;
    transition: all 0.2s;
    opacity: 0; transform: scale(0.8);
}
.signal-player:not([data-state="dormant"]) .sp-play {
    opacity: 1; transform: scale(1);
    transition: all 0.2s, opacity 200ms ease 160ms, transform 300ms cubic-bezier(0.34, 1.56, 0.64, 1) 160ms;
}
.sp-play:hover {
    background: rgba(212, 175, 55, 0.12);
    border-color: var(--gold);
}
.sp-play:active { transform: scale(0.92) !important; }

.sp-play-icon { display: flex; align-items: center; justify-content: center; }
.sp-icon-pause { display: none; }
.signal-player[data-state="playing"] .sp-icon-play { display: none; }
.signal-player[data-state="playing"] .sp-icon-pause { display: block; }

/* Loader ring */
.sp-play-loader {
    position: absolute; inset: -3px;
    border-radius: 50%;
    border: 2px solid transparent;
    border-top-color: var(--gold);
    opacity: 0;
    pointer-events: none;
}
.signal-player[data-state="loading"] .sp-play-loader {
    opacity: 1;
    animation: sp-spin 0.7s linear infinite;
}
.signal-player[data-state="loading"] .sp-play-icon { opacity: 0.3; }
@keyframes sp-spin { to { transform: rotate(360deg); } }

/* Ambient glow */
.signal-player[data-state="playing"] .sp-play::after {
    content: '';
    position: absolute; inset: -6px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(212, 175, 55, 0.1), transparent 70%);
    animation: sp-glow 2.5s ease-in-out infinite;
    pointer-events: none;
}
@keyframes sp-glow {
    0%, 100% { opacity: 0.3; transform: scale(1); }
    50% { opacity: 1; transform: scale(1.12); }
}

/* ── Mini waveform bars ── */
.sp-bars {
    display: flex; align-items: flex-end; gap: 2px;
    height: 20px; flex-shrink: 0;
    opacity: 0;
    transition: opacity 150ms ease;
}
.signal-player:not([data-state="dormant"]) .sp-bars {
    opacity: 1;
    transition: opacity 250ms ease 220ms;
}
.sp-bars span {
    display: block; width: 2.5px; border-radius: 1.5px;
    background: var(--gold); transform-origin: bottom;
    transform: scaleY(0.15);
}
.sp-bars span:nth-child(1) { height: 6px; }
.sp-bars span:nth-child(2) { height: 14px; }
.sp-bars span:nth-child(3) { height: 10px; }
.sp-bars span:nth-child(4) { height: 18px; }
.sp-bars span:nth-child(5) { height: 8px; }
.signal-player[data-state="playing"] .sp-bars span:nth-child(1) { animation: sp-bv 0.9s ease-in-out 0.00s infinite; }
.signal-player[data-state="playing"] .sp-bars span:nth-child(2) { animation: sp-bv 0.7s ease-in-out 0.08s infinite; }
.signal-player[data-state="playing"] .sp-bars span:nth-child(3) { animation: sp-bv 1.1s ease-in-out 0.15s infinite; }
.signal-player[data-state="playing"] .sp-bars span:nth-child(4) { animation: sp-bv 0.6s ease-in-out 0.05s infinite; }
.signal-player[data-state="playing"] .sp-bars span:nth-child(5) { animation: sp-bv 0.85s ease-in-out 0.12s infinite; }
@keyframes sp-bv {
    0%, 100% { transform: scaleY(0.15); opacity: 0.5; }
    50% { transform: scaleY(1); opacity: 1; }
}
.signal-player[data-state="paused"] .sp-bars span {
    transform: scaleY(0.3); transition: transform 0.3s ease;
}
.signal-player[data-state="loading"] .sp-bars span {
    animation: sp-load-bars 0.5s ease-in-out infinite alternate;
}
@keyframes sp-load-bars {
    from { transform: scaleY(0.15); opacity: 0.3; }
    to { transform: scaleY(0.5); opacity: 0.6; }
}

/* ── Progress bar ── */
.sp-progress-wrap {
    flex: 1; display: flex; align-items: center; gap: 0.5rem;
    opacity: 0;
    transition: opacity 150ms ease;
}
.signal-player:not([data-state="dormant"]) .sp-progress-wrap {
    opacity: 1;
    transition: opacity 250ms ease 260ms;
}
.sp-progress {
    flex: 1; height: 5px;
    background: rgba(212, 175, 55, 0.1);
    border-radius: 3px;
    cursor: pointer;
    position: relative;
    overflow: hidden;
    transition: height 0.15s ease;
}
.sp-progress:hover { height: 8px; }
.sp-progress-load {
    position: absolute; top: 0; left: 0; height: 100%;
    background: rgba(212, 175, 55, 0.06);
    border-radius: 3px; width: 0%;
    pointer-events: none;
}
.sp-progress-fill {
    height: 100%;
    background: var(--gold);
    border-radius: 3px;
    width: 0%;
    position: relative;
    transition: width 0.15s linear;
}
.sp-progress-fill::after {
    content: '';
    position: absolute; right: -5px; top: 50%;
    width: 10px; height: 10px;
    background: var(--gold);
    border-radius: 50%;
    transform: translateY(-50%) scale(0);
    transition: transform 0.15s ease;
    box-shadow: 0 0 6px rgba(212, 175, 55, 0.4);
}
.sp-progress:hover .sp-progress-fill::after {
    transform: translateY(-50%) scale(1);
}
/* Loading shimmer */
.signal-player[data-state="loading"] .sp-progress-fill {
    width: 100% !important;
    background: linear-gradient(90deg, transparent 30%, rgba(212, 175, 55, 0.25) 50%, transparent 70%);
    background-size: 200% 100%;
    animation: sp-shimmer 1.5s ease-in-out infinite;
}
@keyframes sp-shimmer {
    0% { background-position: 200% 0; }
    100% { background-position: -200% 0; }
}

.sp-time {
    font-family: 'Space Mono', monospace;
    font-size: 0.6rem;
    color: var(--text-muted);
    min-width: 70px;
    text-align: right;
    white-space: nowrap;
}
.sp-volume {
    display: flex; align-items: center;
    margin-left: 0.3rem; flex-shrink: 0;
    opacity: 0;
    transition: opacity 150ms ease;
}
.signal-player:not([data-state="dormant"]) .sp-volume {
    opacity: 1;
    transition: opacity 250ms ease 300ms;
}
.sp-vol-slider {
    -webkit-appearance: none; appearance: none;
    width: 60px; height: 3px;
    background: rgba(212, 175, 55, 0.2);
    border-radius: 2px; outline: none;
}
.sp-vol-slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 10px; height: 10px;
    background: var(--gold);
    border-radius: 50%; cursor: pointer;
}
.sp-vol-slider::-moz-range-thumb {
    width: 10px; height: 10px;
    background: var(--gold);
    border-radius: 50%; cursor: pointer; border: none;
}

/* ── Track item play indicators ── */
.tn-play, .tn-eq { display: none; }
.tn-play { color: var(--gold); font-size: 0.6rem; }
.tn-eq { display: none; gap: 1.5px; align-items: flex-end; height: 14px; justify-content: center; }
.tn-eq i {
    display: block; width: 2px; border-radius: 1px;
    background: var(--gold); transform-origin: bottom;
}
.tn-eq i:nth-child(1) { height: 7px; animation: tn-eq 0.8s ease-in-out 0s infinite; }
.tn-eq i:nth-child(2) { height: 12px; animation: tn-eq 0.6s ease-in-out 0.1s infinite; }
.tn-eq i:nth-child(3) { height: 5px; animation: tn-eq 0.9s ease-in-out 0.2s infinite; }
@keyframes tn-eq {
    0%, 100% { transform: scaleY(0.2); }
    50% { transform: scaleY(1); }
}
.track-item:hover .tn-text { display: none; }
.track-item:hover .tn-play { display: block; }
.track-item.is-playing .tn-text,
.track-item.is-playing .tn-play { display: none !important; }
.track-item.is-playing .tn-eq { display: flex !important; }
.track-item.is-paused .tn-text { display: none; }
.track-item.is-paused .tn-play { display: block; }

.signal-spacer { height: 5rem; }

/* ═══ RESPONSIVE ═══ */
@media (max-width: 768px) {
    .series-hero { min-height: 280px; padding: 2rem 1rem 1.5rem; }
    .sp-inner { padding: 0.5rem 0.8rem; }
    .sp-transport { gap: 0.4rem; }
    .sp-volume { display: none; }
    .sp-progress { height: 6px; }
    .sp-progress:hover { height: 6px; }
    .sp-title { font-size: 0.8rem; }
    .track-desc { display: none; }
    .convo-grid { grid-template-columns: 1fr; }
}
@media (max-width: 480px) {
    .badge { font-size: 0.5rem; padding: 0.15rem 0.4rem; }
}