/* ================================================================
   SISTEMA DE TEMAS // NEURAL DECK
   ================================================================ */

/* 1. TEMA POR DEFECTO // CIBERPUNK */
:root,
[data-theme="cyberpunk"] {
    --bg-base: #06070a;
    --bg-surface: #0c0e15;
    --bg-elevated: #131722;
    --neon-cyan: #00f0ff;
    --neon-pink: #ff0055;
    --neon-yellow: #fcee0a;
    --neon-green: #00ff66;
    --text-main: #d8e2ec;
    --text-dim: #5c697e;
    --border-glow: rgba(0, 240, 255, 0.35);
    --border-glow-pink: rgba(255, 0, 85, 0.4);
    --grid-line: rgba(0, 240, 255, 0.03);
}

/* 2. TEMA MATRIX // TERMINAL FÓSFORO VERDE & DIGITAL RAIN */
[data-theme="matrix"] {
    --bg-base: #020702;
    --bg-surface: #051205;
    --bg-elevated: #091f09;
    --neon-cyan: #00ff66;
    --neon-pink: #33ff33;
    --neon-yellow: #a8ff1a;
    --neon-green: #00cc44;
    --text-main: #b8ffc9;
    --text-dim: #2a6132;
    --border-glow: rgba(0, 255, 102, 0.35);
    --border-glow-pink: rgba(51, 255, 51, 0.35);
    --grid-line: rgba(0, 255, 102, 0.04);
}

/* 3. TEMA UNIVERSITARIO // OXFORD ACADEMIC NAVY & CRIMSON */
[data-theme="university"] {
    --bg-base: #0a0f16;
    --bg-surface: #111a24;
    --bg-elevated: #1a2736;
    --neon-cyan: #4a90e2;
    --neon-pink: #c0392b;
    --neon-yellow: #d4af37;
    --neon-green: #27ae60;
    --text-main: #e6ecf2;
    --text-dim: #6c7f93;
    --border-glow: rgba(74, 144, 226, 0.35);
    --border-glow-pink: rgba(192, 57, 43, 0.4);
    --grid-line: rgba(74, 144, 226, 0.03);
}

/* 4. TEMA OCHENTERO // SYNTHWAVE / OUTRUN 80S */
[data-theme="synthwave"] {
    --bg-base: #0f051d;
    --bg-surface: #1b0a33;
    --bg-elevated: #29114d;
    --neon-cyan: #00e5ff;
    --neon-pink: #ff007f;
    --neon-yellow: #ff9900;
    --neon-green: #b026ff;
    --text-main: #f5e8ff;
    --text-dim: #8b6ca8;
    --border-glow: rgba(255, 0, 127, 0.35);
    --border-glow-pink: rgba(176, 38, 255, 0.4);
    --grid-line: rgba(255, 0, 127, 0.04);
}

/* ================================================================
   REGLAS GLOBALES Y RESET
   ================================================================ */

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    -webkit-tap-highlight-color: transparent;
}

body {
    background-color: var(--bg-base);
    background-image: 
        linear-gradient(var(--grid-line) 1px, transparent 1px),
        linear-gradient(90deg, var(--grid-line) 1px, transparent 1px);
    background-size: 30px 30px;
    color: var(--text-main);
    font-family: 'Rajdhani', sans-serif;
    font-weight: 600;
    display: flex;
    height: 100vh;
    overflow: hidden;
    position: relative;
    transition: background-color 0.25s ease, color 0.25s ease;
}

body.subpage {
    overflow-y: auto;
    height: auto;
    min-height: 100vh;
    flex-direction: column;
}

::-webkit-scrollbar { width: 5px; height: 5px; }
::-webkit-scrollbar-track { background: var(--bg-base); }
::-webkit-scrollbar-thumb { background: var(--border-glow); border-radius: 2px; }

/* ================================================================
   BOTONES
   ================================================================ */

.cyber-btn {
    background: transparent;
    color: var(--neon-cyan);
    border: 1px solid var(--neon-cyan);
    padding: 9px 16px;
    font-family: 'Orbitron', monospace;
    font-size: 0.72rem;
    font-weight: 700;
    letter-spacing: 1px;
    cursor: pointer;
    transition: all 0.2s ease;
    clip-path: polygon(6px 0, 100% 0, 100% calc(100% - 6px), calc(100% - 6px) 100%, 0 100%, 0 6px);
    display: inline-flex;
    align-items: center;
    gap: 8px;
    text-decoration: none;
}

.cyber-btn:hover {
    background: var(--neon-cyan);
    color: #000;
    box-shadow: 0 0 14px var(--border-glow);
}

.cyber-btn.green {
    border-color: var(--neon-green);
    color: var(--neon-green);
}

.cyber-btn.green:hover {
    background: var(--neon-green);
    color: #000;
    box-shadow: 0 0 14px rgba(0, 255, 102, 0.6);
}

.cyber-btn.yellow {
    border-color: var(--neon-yellow);
    color: var(--neon-yellow);
}

.cyber-btn.yellow:hover {
    background: var(--neon-yellow);
    color: #000;
    box-shadow: 0 0 14px rgba(252, 238, 10, 0.6);
}

.cyber-btn.pink {
    border-color: var(--neon-pink);
    color: var(--neon-pink);
}

.cyber-btn.pink:hover {
    background: var(--neon-pink);
    color: #fff;
    box-shadow: 0 0 14px var(--border-glow-pink);
}

.cyber-btn.active {
    background: rgba(252, 238, 10, 0.15);
    border-color: var(--neon-yellow);
    color: var(--neon-yellow);
}

.copy-btn {
    background: transparent;
    border: 1px solid var(--neon-cyan);
    color: var(--neon-cyan);
    padding: 6px 12px;
    font-family: 'Share Tech Mono', monospace;
    font-size: 0.78rem;
    cursor: pointer;
    transition: 0.2s;
}

.copy-btn:hover {
    background: var(--neon-cyan);
    color: #000;
}

.del-btn {
    background: transparent;
    border: 1px solid var(--neon-pink);
    color: var(--neon-pink);
    padding: 2px 6px;
    font-family: 'Share Tech Mono', monospace;
    cursor: pointer;
    font-size: 0.72rem;
}

.del-btn:hover {
    background: var(--neon-pink);
    color: #fff;
}

/* ================================================================
   INPUTS Y SELECTORES
   ================================================================ */

.cyber-input {
    width: 100%;
    background: #030407;
    border: 1px solid var(--border-glow);
    color: #fff;
    padding: 10px;
    font-family: 'Share Tech Mono', monospace;
    font-size: 0.88rem;
    outline: none;
    margin-bottom: 10px;
}

.cyber-input:focus {
    border-color: var(--neon-yellow);
    box-shadow: 0 0 10px rgba(252, 238, 10, 0.3);
}

textarea.cyber-input {
    height: 90px;
    resize: vertical;
}

.cyber-select {
    background: #030407;
    border: 1px solid var(--neon-cyan);
    color: var(--neon-cyan);
    font-family: 'Share Tech Mono', monospace;
    font-size: 0.78rem;
    padding: 4px 8px;
    outline: none;
    cursor: pointer;
}

.cyber-select option {
    background: var(--bg-surface);
    color: #fff;
}

.cyber-date-input {
    background: #030407;
    border: 1px solid var(--neon-yellow);
    color: var(--neon-yellow);
    font-family: 'Share Tech Mono', monospace;
    font-size: 0.78rem;
    padding: 3px 6px;
    outline: none;
    cursor: pointer;
}

.cyber-date-input::-webkit-calendar-picker-indicator {
    filter: invert(1) brightness(1.2) sepia(100%) saturate(8000%) hue-rotate(15deg);
    cursor: pointer;
}

/* ================================================================
   CONTENEDORES Y PANELES
   ================================================================ */

.tracker-container, .prompt-container {
    max-width: 1200px;
    width: 100%;
    margin: 0 auto;
    padding: 24px 16px 80px 16px;
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.tracker-nav, .prompt-nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 2px solid var(--neon-cyan);
    padding-bottom: 14px;
    flex-wrap: wrap;
    gap: 12px;
}

.prompt-nav {
    border-bottom-color: var(--neon-green);
}

.nav-actions {
    display: flex;
    align-items: center;
    gap: 10px;
    flex-wrap: wrap;
}

.nav-btn, .nav-back-btn {
    background: transparent;
    border: 1px solid var(--neon-cyan);
    color: var(--neon-cyan);
    padding: 8px 14px;
    font-family: 'Orbitron', monospace;
    font-size: 0.72rem;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    cursor: pointer;
    transition: 0.2s;
    clip-path: polygon(8px 0, 100% 0, 100% calc(100% - 8px), calc(100% - 8px) 100%, 0 100%, 0 8px);
}

.nav-btn:hover, .nav-back-btn:hover {
    background: var(--neon-cyan);
    color: #000;
    box-shadow: 0 0 14px var(--border-glow);
}

.nav-btn.green, .nav-back-btn.green {
    border-color: var(--neon-green);
    color: var(--neon-green);
}

.nav-btn.green:hover, .nav-back-btn.green:hover {
    background: var(--neon-green);
    color: #000;
    box-shadow: 0 0 14px rgba(0, 255, 102, 0.5);
}

.nav-btn.yellow, .nav-back-btn.yellow {
    border-color: var(--neon-yellow);
    color: var(--neon-yellow);
}

.nav-btn.yellow:hover, .nav-back-btn.yellow:hover {
    background: var(--neon-yellow);
    color: #000;
    box-shadow: 0 0 14px rgba(252, 238, 10, 0.5);
}

.nav-btn.pink, .nav-back-btn.pink {
    border-color: var(--neon-pink);
    color: var(--neon-pink);
}

.nav-btn.pink:hover, .nav-back-btn.pink:hover {
    background: var(--neon-pink);
    color: #fff;
    box-shadow: 0 0 14px var(--border-glow-pink);
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 14px;
}

.stat-card {
    background: var(--bg-surface);
    border: 1px solid var(--border-glow);
    padding: 16px;
    border-left: 4px solid var(--neon-cyan);
}

.stat-card.pink { border-left-color: var(--neon-pink); }
.stat-card.yellow { border-left-color: var(--neon-yellow); }

.stat-value {
    font-family: 'Orbitron', monospace;
    font-size: 1.8rem;
    color: #fff;
    margin: 6px 0;
}

.stat-label {
    font-family: 'Share Tech Mono', monospace;
    font-size: 0.75rem;
    color: var(--text-dim);
    letter-spacing: 1px;
}

.protocol-card {
    background: var(--bg-surface);
    border: 1px solid var(--border-glow);
    padding: 22px;
    border-radius: 4px;
}

.protocol-card h2 {
    font-family: 'Orbitron', monospace;
    font-size: 1.15rem;
    color: var(--neon-yellow);
    margin-bottom: 16px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 8px;
}

.terminal-display {
    background: #030407;
    border: 1px solid var(--border-glow);
    padding: 18px;
    font-family: 'Share Tech Mono', monospace;
    font-size: 0.92rem;
    color: var(--text-main);
    white-space: pre-wrap;
    line-height: 1.55;
    min-height: 110px;
}

.drill-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

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

.drill-pill {
    background: rgba(19, 23, 34, 0.8);
    border: 1px solid var(--border-glow);
    padding: 8px 12px;
    margin-bottom: 8px;
    font-size: 0.95rem;
}

.drill-pill span {
    color: var(--neon-cyan);
    font-family: 'Share Tech Mono', monospace;
}

.routine-table {
    width: 100%;
    border-collapse: collapse;
    font-family: 'Share Tech Mono', monospace;
    font-size: 0.85rem;
}

.routine-table th, .routine-table td {
    padding: 12px 10px;
    border: 1px solid var(--border-glow);
    text-align: left;
}

.routine-table th {
    background: rgba(0, 240, 255, 0.1);
    color: var(--neon-cyan);
}

.routine-check {
    width: 20px;
    height: 20px;
    cursor: pointer;
    accent-color: var(--neon-green);
}

.timer-box {
    display: flex;
    align-items: center;
    justify-content: space-between;
    background: #030407;
    border: 1px solid var(--neon-pink);
    padding: 14px 20px;
    margin-bottom: 16px;
}

.timer-display {
    font-family: 'Orbitron', monospace;
    font-size: 2.2rem;
    color: var(--neon-pink);
    text-shadow: 0 0 12px var(--border-glow-pink);
}

.timer-display.flash {
    animation: timerPulse 1s infinite alternate;
}

@keyframes timerPulse {
    from { color: var(--neon-pink); text-shadow: 0 0 10px var(--neon-pink); }
    to { color: var(--neon-yellow); text-shadow: 0 0 18px var(--neon-yellow); }
}

.mode-selector-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

@media (max-width: 800px) {
    .mode-selector-grid { grid-template-columns: 1fr; }
}

.mode-card {
    background: var(--bg-surface);
    border: 1px solid var(--border-glow);
    padding: 18px;
    border-left: 4px solid var(--neon-cyan);
    cursor: pointer;
    transition: 0.2s;
}

.mode-card.green { border-left-color: var(--neon-green); }
.mode-card.active {
    box-shadow: 0 0 16px var(--border-glow);
    background: rgba(19, 23, 34, 0.9);
}

.mode-card h3 {
    font-family: 'Orbitron', monospace;
    font-size: 1rem;
    margin-bottom: 6px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.upload-drop-zone {
    border: 2px dashed var(--neon-cyan);
    background: rgba(0, 240, 255, 0.03);
    padding: 18px;
    text-align: center;
    margin-bottom: 16px;
    border-radius: 4px;
}

.upload-drop-zone:hover {
    border-color: var(--neon-yellow);
    background: rgba(252, 238, 10, 0.05);
}

.prompt-bank-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 8px 12px;
    background: rgba(19, 23, 34, 0.6);
    border: 1px solid rgba(92, 105, 126, 0.25);
    margin-bottom: 6px;
    font-family: 'Share Tech Mono', monospace;
    font-size: 0.82rem;
}

.prompt-bank-item:hover {
    border-color: var(--neon-cyan);
}

/* ================================================================
   SIDEBAR & DASHBOARDS
   ================================================================ */

.sidebar {
    width: 320px;
    background-color: var(--bg-surface);
    padding: 20px 16px;
    overflow-y: auto;
    border-right: 2px solid var(--neon-cyan);
    box-shadow: 4px 0 20px rgba(0, 240, 255, 0.15);
    display: flex;
    flex-direction: column;
    flex-shrink: 0;
    z-index: 150;
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.sidebar-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.75);
    backdrop-filter: blur(4px);
    z-index: 140;
}

.brand-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-bottom: 16px;
    margin-bottom: 15px;
    border-bottom: 1px solid rgba(0, 240, 255, 0.2);
}

.brand-info {
    display: flex;
    align-items: center;
    gap: 12px;
}

.brand-title {
    font-family: 'Orbitron', monospace;
    font-size: 1.05rem;
    font-weight: 900;
    letter-spacing: 2px;
    color: #fff;
}

.brand-subtitle {
    font-family: 'Share Tech Mono', monospace;
    font-size: 0.7rem;
    color: var(--neon-cyan);
}

.close-sidebar-btn {
    display: none;
    background: transparent;
    border: 1px solid var(--neon-pink);
    color: var(--neon-pink);
    font-size: 0.9rem;
    padding: 4px 8px;
    cursor: pointer;
}

.search-container { margin-bottom: 15px; }

.cyber-search {
    width: 100%;
    background: #030407;
    border: 1px solid var(--border-glow);
    color: var(--neon-cyan);
    padding: 10px 12px;
    font-family: 'Share Tech Mono', monospace;
    font-size: 0.82rem;
    outline: none;
}

.cyber-search:focus {
    border-color: var(--neon-yellow);
    box-shadow: 0 0 10px rgba(252, 238, 10, 0.3);
}

.section-label {
    font-family: 'Orbitron', monospace;
    font-size: 0.68rem;
    letter-spacing: 2px;
    color: var(--neon-yellow);
    margin: 14px 0 8px 4px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.section-label::after {
    content: '';
    flex: 1;
    height: 1px;
    background: linear-gradient(90deg, var(--neon-yellow), transparent);
}

.category-btn {
    width: 100%;
    text-align: left;
    background: rgba(19, 23, 34, 0.7);
    border: 1px solid rgba(92, 105, 126, 0.3);
    color: var(--text-main);
    padding: 12px 14px;
    margin-bottom: 6px;
    cursor: pointer;
    font-family: 'Share Tech Mono', monospace;
    font-size: 0.82rem;
    clip-path: polygon(0 0, calc(100% - 10px) 0, 100% 10px, 100% 100%, 0 100%);
    display: block;
}

.category-btn.active {
    background: rgba(255, 0, 85, 0.15);
    border-color: var(--neon-pink);
    color: #fff;
    font-weight: 700;
}

.category-btn.hard-btn {
    border-color: var(--neon-pink);
    color: var(--neon-pink);
}

.main-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    padding: 20px;
    overflow: hidden;
    margin-bottom: 140px;
    min-width: 0;
}

.deck-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid rgba(0, 240, 255, 0.2);
    padding-bottom: 12px;
    margin-bottom: 14px;
    gap: 10px;
    flex-wrap: wrap;
}

.mobile-menu-trigger {
    display: none;
    background: transparent;
    border: 1px solid var(--neon-cyan);
    color: var(--neon-cyan);
    padding: 6px 12px;
    font-family: 'Orbitron', monospace;
    font-size: 0.75rem;
    cursor: pointer;
}

.deck-title {
    font-family: 'Orbitron', monospace;
    font-size: 1.3rem;
    color: #fff;
    letter-spacing: 1px;
    text-shadow: 0 0 10px var(--border-glow);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.hud-actions {
    display: flex;
    align-items: center;
    gap: 8px;
    flex-wrap: wrap;
}

.content-split {
    display: flex;
    gap: 16px;
    height: 100%;
    overflow: hidden;
    min-height: 0;
}

.tracks-column {
    flex: 1;
    display: flex;
    flex-direction: column;
    overflow-y: auto;
    padding-right: 6px;
    min-width: 0;
}

.markdown-column {
    flex: 1.1;
    background: rgba(12, 14, 21, 0.85);
    padding: 20px;
    overflow-y: auto;
    border: 1px solid var(--border-glow);
    position: relative;
    min-width: 0;
}

.markdown-column::before {
    content: 'DATA_STREAM // TELEMETRY_REF';
    position: absolute;
    top: 6px;
    right: 12px;
    font-family: 'Share Tech Mono', monospace;
    font-size: 0.65rem;
    color: var(--neon-cyan);
    opacity: 0.7;
}

.recall-active .track-name {
    filter: blur(7px);
    user-select: none;
    transition: filter 0.2s ease;
}

.recall-active .track-name:hover,
.recall-active .track-item.playing .track-name {
    filter: blur(0);
}

.recall-active .markdown-column { filter: blur(8px); }
.recall-active .markdown-column:hover { filter: blur(0); }

.track-item {
    display: flex;
    align-items: center;
    background: rgba(19, 23, 34, 0.5);
    border: 1px solid rgba(92, 105, 126, 0.25);
    padding: 10px 12px;
    margin-bottom: 6px;
    gap: 10px;
}

.track-item.playing {
    border-color: var(--neon-yellow);
    background: rgba(252, 238, 10, 0.08);
}

.track-item.playing .track-name {
    color: var(--neon-yellow);
    font-weight: 700;
}

.track-checkbox {
    appearance: none;
    width: 18px;
    height: 18px;
    border: 1px solid var(--neon-cyan);
    background: transparent;
    cursor: pointer;
    flex-shrink: 0;
}

.track-checkbox:checked {
    background: var(--neon-cyan);
    box-shadow: 0 0 8px var(--neon-cyan);
}

.star-btn {
    background: transparent;
    border: none;
    color: var(--text-dim);
    font-size: 0.9rem;
    font-family: 'Share Tech Mono', monospace;
    cursor: pointer;
    padding: 0 4px;
    flex-shrink: 0;
}

.star-btn.starred {
    color: var(--neon-pink);
    text-shadow: 0 0 8px var(--neon-pink);
}

.track-name {
    flex: 1;
    font-family: 'Share Tech Mono', monospace;
    font-size: 0.88rem;
    cursor: pointer;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.play-btn-mini {
    background: transparent;
    border: 1px solid var(--neon-cyan);
    color: var(--neon-cyan);
    padding: 6px 10px;
    font-family: 'Orbitron', monospace;
    font-size: 0.65rem;
    cursor: pointer;
    flex-shrink: 0;
}

.markdown-column h1, .markdown-column h2, .markdown-column h3 {
    font-family: 'Orbitron', monospace;
    color: var(--neon-cyan);
    margin: 16px 0 8px 0;
}

.markdown-column p, .markdown-column li {
    font-size: 1rem;
    line-height: 1.55;
    margin-bottom: 8px;
    color: #d1d9e6;
}

.markdown-column table {
    width: 100%;
    border-collapse: collapse;
    margin: 14px 0;
    font-family: 'Share Tech Mono', monospace;
    font-size: 0.85rem;
    display: block;
    overflow-x: auto;
}

.markdown-column th, .markdown-column td {
    border: 1px solid var(--border-glow);
    padding: 8px 10px;
    text-align: left;
}

.markdown-column th {
    background: rgba(0, 240, 255, 0.1);
    color: var(--neon-cyan);
}

.markdown-column code {
    background: #040508;
    color: var(--neon-green);
    font-family: 'Share Tech Mono', monospace;
    padding: 2px 5px;
    border: 1px solid rgba(0, 255, 102, 0.2);
}

/* ================================================================
   PLAYER HUD INFERIOR
   ================================================================ */

.player-hud {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background: rgba(6, 7, 10, 0.98);
    backdrop-filter: blur(12px);
    padding: 10px 20px;
    border-top: 2px solid var(--neon-pink);
    box-shadow: 0 -4px 20px var(--border-glow-pink);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 14px;
    z-index: 100;
}

.now-playing-box {
    width: 260px;
    overflow: hidden;
    flex-shrink: 0;
}

.now-playing-tag {
    font-family: 'Orbitron', monospace;
    font-size: 0.62rem;
    color: var(--neon-pink);
    display: flex;
    justify-content: space-between;
}

.now-playing-title {
    font-family: 'Share Tech Mono', monospace;
    font-size: 0.92rem;
    color: #fff;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    margin: 2px 0;
}

.session-stats {
    font-family: 'Share Tech Mono', monospace;
    font-size: 0.68rem;
    color: var(--neon-green);
}

.visualizer-container {
    width: 110px;
    height: 36px;
    display: flex;
    align-items: center;
    flex-shrink: 0;
}

#visualizer-canvas {
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    border: 1px solid var(--border-glow);
}

.hud-center-controls {
    flex: 2;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 6px;
    max-width: 680px;
    min-width: 0;
}

audio {
    width: 100%;
    height: 32px;
    filter: invert(1) hue-rotate(180deg);
}

.hud-actions-row {
    display: flex;
    align-items: center;
    gap: 10px;
    width: 100%;
    justify-content: center;
    flex-wrap: wrap;
}

.hud-mini-btn {
    background: transparent;
    border: 1px solid var(--border-glow);
    color: var(--text-main);
    padding: 3px 8px;
    font-family: 'Orbitron', monospace;
    font-size: 0.65rem;
    font-weight: 700;
    cursor: pointer;
}

.hud-mini-btn.active {
    border-color: var(--neon-yellow);
    color: var(--neon-yellow);
    background: rgba(252, 238, 10, 0.12);
}

.control-group {
    display: flex;
    align-items: center;
    gap: 3px;
    font-family: 'Share Tech Mono', monospace;
    font-size: 0.72rem;
}

.control-btn {
    background: rgba(19, 23, 34, 0.8);
    border: 1px solid rgba(92, 105, 126, 0.3);
    color: var(--text-dim);
    padding: 3px 6px;
    cursor: pointer;
    font-family: 'Share Tech Mono', monospace;
    font-size: 0.72rem;
}

.control-btn.active {
    background: rgba(0, 240, 255, 0.15);
    border-color: var(--neon-cyan);
    color: var(--neon-cyan);
    font-weight: 700;
}

#shadow-progress {
    height: 2px;
    background: var(--neon-yellow);
    width: 0%;
    transition: width linear;
}

/* ================================================================
   RESPONSIVE
   ================================================================ */

@media (max-width: 960px) {
    .sidebar {
        position: fixed;
        top: 0;
        bottom: 0;
        left: 0;
        width: 85%;
        max-width: 320px;
        transform: translateX(-100%);
    }
    .sidebar.open { transform: translateX(0); }
    .sidebar-overlay.active { display: block; }
    .close-sidebar-btn { display: block; }
    .mobile-menu-trigger { display: inline-block; }

    .content-split {
        flex-direction: column;
        overflow-y: auto;
    }
    .tracks-column {
        flex: none;
        height: 52%;
        overflow-y: auto;
        border-bottom: 1px solid var(--border-glow);
        padding-bottom: 12px;
    }
    .markdown-column {
        flex: none;
        height: 48%;
        overflow-y: auto;
    }
    .visualizer-container { display: none; }
}

@media (max-width: 640px) {
    .main-content {
        padding: 12px;
        margin-bottom: 165px;
    }
    .deck-header { margin-bottom: 10px; }
    .deck-title { font-size: 1.05rem; }
    .cyber-btn { padding: 6px 10px; font-size: 0.65rem; }

    .player-hud {
        flex-direction: column;
        align-items: stretch;
        padding: 8px 14px;
        gap: 6px;
    }
    .now-playing-box {
        width: 100%;
        display: flex;
        align-items: center;
        justify-content: space-between;
    }
    .now-playing-title { max-width: 60%; font-size: 0.85rem; }
    .hud-center-controls { max-width: 100%; }
    .hud-actions-row { justify-content: space-between; gap: 4px; }
    .control-group { font-size: 0.68rem; }
    .control-btn { padding: 2px 5px; }
}

.answer-blur-container {
    filter: blur(8px);
    user-select: none;
    transition: filter 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    padding: 4px 0;
}

.answer-blur-container.revealed {
    filter: blur(0);
    user-select: text;
}