* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --bg-dark: #0c0117;
    --bg-purple: #1a0a2e;
    --bg-card: rgba(20, 5, 40, 0.85);
    --text-primary: #fff;
    --text-secondary: rgba(255, 255, 255, 0.8);
    --text-muted: rgba(255, 255, 255, 0.5);
    --neon-pink: #ff2975;
    --neon-magenta: #f222ff;
    --neon-cyan: #00f0ff;
    --neon-yellow: #ffe700;
    --neon-blue: #5271ff;
    --sunset-top: #ff6b6b;
    --sunset-mid: #ff2975;
    --sunset-bottom: #1a0a2e;
    --grid-color: rgba(255, 41, 117, 0.5);
    --glow-pink: 0 0 10px #ff2975, 0 0 20px #ff2975, 0 0 40px #ff2975, 0 0 80px #ff2975;
    --glow-cyan: 0 0 10px #00f0ff, 0 0 20px #00f0ff, 0 0 40px #00f0ff;
    --border-color: rgba(255, 41, 117, 0.3);
}

html {
    font-size: 16px;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    background: var(--bg-dark);
    color: var(--text-primary);
    min-height: 100vh;
    overflow-x: hidden;
}

/* ==========================================
   SYNTHWAVE BACKGROUND
   ========================================== */

.page {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    background:
        linear-gradient(180deg,
            rgba(12, 1, 23, 0.8) 0%,
            rgba(26, 10, 46, 0.7) 40%,
            rgba(45, 27, 78, 0.6) 60%,
            rgba(12, 1, 23, 0.85) 100%
        ),
        url('party-synth.jpg') center top / cover no-repeat fixed;
}

.page::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background:
        repeating-linear-gradient(
            0deg,
            transparent,
            transparent 2px,
            rgba(0, 0, 0, 0.3) 2px,
            rgba(0, 0, 0, 0.3) 4px
        );
    pointer-events: none;
    z-index: 1;
}

.page.hidden {
    display: none;
}

/* Synthwave Grid Floor */
#landing.page::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: -50%;
    right: -50%;
    height: 45%;
    background:
        linear-gradient(to bottom, transparent 0%, var(--bg-dark) 100%),
        repeating-linear-gradient(
            90deg,
            transparent,
            transparent 60px,
            var(--grid-color) 60px,
            var(--grid-color) 61px
        ),
        repeating-linear-gradient(
            0deg,
            transparent,
            transparent 30px,
            var(--grid-color) 30px,
            var(--grid-color) 31px
        );
    transform: perspective(500px) rotateX(60deg);
    transform-origin: center top;
    animation: gridMove 20s linear infinite;
    z-index: 0;
}

@keyframes gridMove {
    0% { background-position: 0 0, 0 0, 0 0; }
    100% { background-position: 0 0, 0 0, 0 1000px; }
}

/* Sun */
#landing .container::before {
    content: '';
    position: absolute;
    top: 5%;
    left: 50%;
    transform: translateX(-50%);
    width: 200px;
    height: 200px;
    background: linear-gradient(180deg,
        #ffe700 0%,
        #ff9500 20%,
        #ff2975 50%,
        #f222ff 80%,
        transparent 100%
    );
    border-radius: 50%;
    filter: blur(2px);
    box-shadow:
        0 0 60px #ff2975,
        0 0 100px #ff2975,
        0 0 150px rgba(255, 41, 117, 0.5);
    z-index: 0;
    animation: sunPulse 4s ease-in-out infinite;
}

/* Sun stripes */
#landing .container::after {
    content: '';
    position: absolute;
    top: 5%;
    left: 50%;
    transform: translateX(-50%);
    width: 200px;
    height: 200px;
    background: repeating-linear-gradient(
        0deg,
        transparent,
        transparent 8px,
        var(--bg-dark) 8px,
        var(--bg-dark) 16px
    );
    border-radius: 50%;
    z-index: 0;
    mask-image: linear-gradient(180deg, transparent 0%, black 50%);
    -webkit-mask-image: linear-gradient(180deg, transparent 0%, black 50%);
}

@keyframes sunPulse {
    0%, 100% { filter: blur(2px); opacity: 1; }
    50% { filter: blur(4px); opacity: 0.9; }
}

/* ==========================================
   LANDING PAGE
   ========================================== */

.container {
    text-align: center;
    padding: 2rem;
    max-width: 650px;
    position: relative;
    z-index: 2;
}

.cassette-hero {
    width: 220px;
    margin: 0 auto 1.5rem;
    filter: drop-shadow(0 0 30px rgba(255, 41, 117, 0.8));
    animation: float 4s ease-in-out infinite;
    position: relative;
    z-index: 2;
}

@keyframes float {
    0%, 100% { transform: translateY(0) rotate(-2deg); }
    50% { transform: translateY(-15px) rotate(2deg); }
}

/* Chrome Text Effect */
.logo {
    font-family: 'Arial Black', 'Impact', sans-serif;
    font-size: 4.5rem;
    font-weight: 900;
    letter-spacing: 0.02em;
    margin-bottom: 0.5rem;
    text-transform: uppercase;
    background: linear-gradient(180deg,
        #fff 0%,
        #fff 35%,
        #ff2975 50%,
        #5271ff 65%,
        #00f0ff 100%
    );
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    filter: drop-shadow(0 0 30px rgba(255, 41, 117, 0.8));
    animation: textFlicker 5s linear infinite;
    position: relative;
}

@keyframes textFlicker {
    0%, 19.999%, 22%, 62.999%, 64%, 64.999%, 70%, 100% {
        opacity: 1;
        filter: drop-shadow(0 0 30px rgba(255, 41, 117, 0.8));
    }
    20%, 21.999%, 63%, 63.999%, 65%, 69.999% {
        opacity: 0.8;
        filter: drop-shadow(0 0 15px rgba(255, 41, 117, 0.4));
    }
}

.tagline {
    font-size: 1.2rem;
    color: var(--neon-cyan);
    margin-bottom: 2.5rem;
    text-shadow: var(--glow-cyan);
    font-style: italic;
    letter-spacing: 0.1em;
}

.steps {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    margin-bottom: 2.5rem;
    text-align: left;
}

.step {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem 1.25rem;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 4px;
    transition: all 0.3s ease;
    backdrop-filter: blur(10px);
}

.step:hover {
    border-color: var(--neon-pink);
    box-shadow: 0 0 20px rgba(255, 41, 117, 0.4), inset 0 0 20px rgba(255, 41, 117, 0.1);
    transform: translateX(10px);
}

.step-number {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    background: linear-gradient(135deg, var(--neon-pink), var(--neon-magenta));
    color: #fff;
    border-radius: 50%;
    font-weight: 700;
    font-size: 1rem;
    flex-shrink: 0;
    box-shadow: 0 0 15px rgba(255, 41, 117, 0.6);
}

.step-text {
    font-size: 0.95rem;
    color: var(--text-secondary);
}

.example-link {
    display: block;
    margin-top: 1.25rem;
    color: var(--neon-cyan);
    text-decoration: none;
    font-size: 0.9rem;
    transition: all 0.3s ease;
    text-shadow: 0 0 10px rgba(0, 240, 255, 0.5);
}

.example-link:hover {
    color: var(--neon-pink);
    text-shadow: var(--glow-pink);
}

.footer-text {
    margin-top: 1.5rem;
    font-size: 0.85rem;
    color: var(--neon-magenta);
    text-shadow: 0 0 20px rgba(242, 34, 255, 0.6);
    font-style: italic;
}

/* ==========================================
   BUTTONS
   ========================================== */

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 1rem 2rem;
    font-size: 1rem;
    font-weight: 700;
    border-radius: 4px;
    border: none;
    cursor: pointer;
    transition: all 0.3s ease;
    font-family: inherit;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    position: relative;
    overflow: hidden;
}

.btn.primary {
    background: linear-gradient(90deg, var(--neon-pink), var(--neon-magenta));
    color: #fff;
    box-shadow:
        0 0 20px rgba(255, 41, 117, 0.6),
        inset 0 0 20px rgba(255, 255, 255, 0.1);
    text-shadow: 0 0 10px rgba(255, 255, 255, 0.5);
}

.btn.primary::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.3), transparent);
    transition: left 0.5s ease;
}

.btn.primary:hover::before {
    left: 100%;
}

.btn.primary:hover {
    transform: translateY(-3px);
    box-shadow:
        0 0 40px rgba(255, 41, 117, 0.8),
        0 0 80px rgba(242, 34, 255, 0.4),
        inset 0 0 20px rgba(255, 255, 255, 0.2);
}

.btn.primary:disabled {
    opacity: 0.4;
    cursor: not-allowed;
    transform: none;
    box-shadow: none;
}

.btn.secondary {
    background: transparent;
    color: var(--neon-cyan);
    border: 2px solid var(--neon-cyan);
    text-shadow: var(--glow-cyan);
    box-shadow: 0 0 10px rgba(0, 240, 255, 0.3), inset 0 0 10px rgba(0, 240, 255, 0.1);
}

.btn.secondary:hover {
    background: rgba(0, 240, 255, 0.1);
    box-shadow: 0 0 30px rgba(0, 240, 255, 0.6), inset 0 0 20px rgba(0, 240, 255, 0.2);
}

.btn-small {
    padding: 0.6rem 1.2rem;
    font-size: 0.8rem;
}

.logo-link {
    font-family: 'Arial Black', 'Impact', sans-serif;
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--neon-cyan);
    text-decoration: none;
    text-shadow: var(--glow-cyan);
    transition: all 0.3s ease;
}

.logo-link:hover {
    color: var(--neon-pink);
    text-shadow: var(--glow-pink);
}

.page-header {
    margin-bottom: 1.5rem;
}

.back-btn {
    background: transparent;
    border: 2px solid var(--neon-cyan);
    color: var(--neon-cyan);
    cursor: pointer;
    font-size: 0.85rem;
    font-weight: 600;
    font-family: inherit;
    padding: 0.5rem 1rem;
    border-radius: 4px;
    transition: all 0.3s ease;
    text-shadow: 0 0 10px rgba(0, 240, 255, 0.5);
    box-shadow: 0 0 10px rgba(0, 240, 255, 0.3), inset 0 0 10px rgba(0, 240, 255, 0.1);
}

.back-btn:hover {
    background: rgba(0, 240, 255, 0.1);
    box-shadow: 0 0 30px rgba(0, 240, 255, 0.6), inset 0 0 20px rgba(0, 240, 255, 0.2);
}

/* ==========================================
   CREATE PAGE
   ========================================== */

/* API Limit Page */
.api-limit-container {
    text-align: center;
    max-width: 500px;
}

.api-limit-title {
    font-family: 'Arial Black', 'Impact', sans-serif;
    font-size: 1.8rem;
    color: var(--neon-pink);
    text-shadow: var(--glow-pink);
    margin: 2rem 0 1.5rem;
}

.api-limit-text {
    color: var(--text-secondary);
    font-size: 1rem;
    line-height: 1.6;
    margin-bottom: 1rem;
}

.api-limit-container .btn {
    margin-top: 1.5rem;
}

#create.page {
    align-items: flex-start;
    padding: 2rem;
}

.create-container {
    width: 100%;
    max-width: 700px;
    text-align: left;
    position: relative;
    z-index: 2;
}

.page-title {
    font-family: 'Arial Black', 'Impact', sans-serif;
    font-size: 2.5rem;
    font-weight: 900;
    margin: 1.5rem 0 2rem;
    text-transform: uppercase;
    background: linear-gradient(180deg, #fff 0%, var(--neon-pink) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    filter: drop-shadow(0 0 20px rgba(255, 41, 117, 0.6));
}

/* Form Elements */
.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-size: 0.8rem;
    color: var(--neon-cyan);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    text-shadow: 0 0 10px rgba(0, 240, 255, 0.5);
}

.form-group input {
    width: 100%;
    padding: 1rem 1.25rem;
    font-size: 1rem;
    background: var(--bg-card);
    border: 2px solid var(--border-color);
    border-radius: 4px;
    color: var(--text-primary);
    font-family: inherit;
    transition: all 0.3s ease;
    backdrop-filter: blur(10px);
}

.form-group input:focus {
    outline: none;
    border-color: var(--neon-cyan);
    box-shadow: 0 0 20px rgba(0, 240, 255, 0.4), inset 0 0 10px rgba(0, 240, 255, 0.1);
}

.form-group input::placeholder {
    color: var(--text-muted);
}

/* Tracks Section */
.tracks-section {
    margin-top: 2rem;
}

.tracks-section h2 {
    font-family: 'Arial Black', 'Impact', sans-serif;
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
    color: var(--neon-pink);
    text-transform: uppercase;
    text-shadow: 0 0 20px rgba(255, 41, 117, 0.6);
}

.track-list {
    margin-bottom: 1.5rem;
}

.track-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 0.875rem 1rem;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 4px;
    margin-bottom: 0.5rem;
    transition: all 0.3s ease;
    backdrop-filter: blur(10px);
}

.track-item:hover {
    border-color: var(--neon-pink);
    box-shadow: 0 0 15px rgba(255, 41, 117, 0.3);
    transform: translateX(5px);
}

.track-number {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 28px;
    height: 28px;
    background: linear-gradient(135deg, var(--neon-pink), var(--neon-magenta));
    border-radius: 4px;
    font-size: 0.8rem;
    font-weight: 700;
    color: #fff;
    flex-shrink: 0;
}

.track-info {
    flex: 1;
    min-width: 0;
}

.track-title {
    font-weight: 600;
    margin-bottom: 0.2rem;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.track-artist {
    font-size: 0.85rem;
    color: var(--neon-cyan);
    text-shadow: 0 0 10px rgba(0, 240, 255, 0.3);
}

.track-remove {
    background: none;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    font-size: 1.4rem;
    padding: 0.25rem;
    transition: all 0.2s ease;
    line-height: 1;
}

.track-remove:hover {
    color: #ff4444;
    text-shadow: 0 0 15px #ff4444;
}

/* Search Container */
.search-container {
    padding: 1.5rem;
    background: var(--bg-card);
    border: 2px solid var(--border-color);
    border-radius: 4px;
    position: relative;
    backdrop-filter: blur(10px);
}

.search-container h3 {
    font-size: 0.9rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: var(--neon-pink);
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

.search-container .form-group {
    margin-bottom: 0;
}

/* Manual Entry */
.manual-entry {
    margin-top: 1.5rem;
    padding-top: 1.5rem;
    border-top: 1px solid var(--border-color);
}

.manual-entry-label {
    font-size: 0.75rem;
    color: var(--text-muted);
    margin-bottom: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.manual-entry-fields {
    display: flex;
    gap: 0.5rem;
}

.manual-entry-fields input {
    flex: 1;
    padding: 0.7rem 0.9rem;
    font-size: 0.85rem;
    background: rgba(0, 0, 0, 0.4);
    border: 1px solid var(--border-color);
    border-radius: 4px;
    color: var(--text-primary);
}

.manual-entry-fields .btn {
    flex-shrink: 0;
}

/* Search Results */
.search-results {
    background: rgba(20, 5, 40, 0.98);
    border: 2px solid var(--neon-cyan);
    border-radius: 4px;
    max-height: 300px;
    overflow-y: auto;
    margin-top: 0.5rem;
    box-shadow: 0 10px 40px rgba(0, 240, 255, 0.3);
}

.search-results.hidden {
    display: none;
}

.search-result {
    display: flex;
    gap: 1rem;
    padding: 0.75rem 1rem;
    cursor: pointer;
    transition: all 0.2s ease;
    border-bottom: 1px solid var(--border-color);
}

.search-result:last-child {
    border-bottom: none;
}

.search-result:hover {
    background: linear-gradient(90deg, rgba(255, 41, 117, 0.2), rgba(0, 240, 255, 0.1));
}

.search-result.loading {
    opacity: 0.7;
    pointer-events: none;
    animation: pulse 1s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 0.7; }
    50% { opacity: 0.4; }
}

.search-thumb {
    width: 50px;
    height: 50px;
    object-fit: cover;
    border-radius: 4px;
    flex-shrink: 0;
    border: 1px solid var(--border-color);
}

.search-result-info {
    flex: 1;
    min-width: 0;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.search-result-title {
    font-size: 0.85rem;
    font-weight: 500;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    margin-bottom: 0.2rem;
}

.search-result-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    align-items: center;
    font-size: 0.7rem;
    color: var(--text-muted);
}

.search-result-author {
    color: var(--neon-cyan);
}

.search-result-album {
    color: var(--text-muted);
    font-style: italic;
}

.official-badge {
    background: linear-gradient(90deg, var(--neon-pink), var(--neon-magenta));
    color: #fff;
    padding: 0.1rem 0.4rem;
    border-radius: 2px;
    font-size: 0.6rem;
    font-weight: 700;
    text-transform: uppercase;
}

.search-loading,
.search-empty,
.search-error {
    padding: 1.5rem;
    text-align: center;
    color: var(--text-muted);
    font-size: 0.85rem;
}

.search-error {
    color: #ff6b6b;
}

/* Action Buttons & Share Section */
.action-buttons {
    margin-top: 2rem;
    display: flex;
    gap: 1rem;
}

.share-section {
    margin-top: 2rem;
    padding: 1.5rem;
    background: var(--bg-card);
    border: 2px solid var(--neon-pink);
    border-radius: 4px;
    box-shadow: 0 0 30px rgba(255, 41, 117, 0.3);
}

.share-section.hidden {
    display: none;
}

.share-section h3 {
    font-size: 0.9rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: var(--neon-pink);
    text-transform: uppercase;
}

.share-link-container {
    display: flex;
    gap: 0.5rem;
    margin-bottom: 1rem;
}

.share-link-container input {
    flex: 1;
    padding: 0.75rem 1rem;
    font-size: 0.75rem;
    background: rgba(0, 0, 0, 0.5);
    border: 1px solid var(--border-color);
    border-radius: 4px;
    color: var(--neon-cyan);
    font-family: monospace;
}

/* ==========================================
   PLAYER PAGE
   ========================================== */

#player.page {
    align-items: flex-start;
    padding: 0;
}

.player-wrapper {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 1rem 2rem;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    position: relative;
    z-index: 2;
}

.player-topbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--border-color);
    margin-bottom: 1.5rem;
}

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

.tape-title-section {
    text-align: center;
    margin-bottom: 1rem;
}

.tape-name {
    font-family: 'Arial Black', 'Impact', sans-serif;
    font-size: 1.75rem;
    font-weight: 700;
    text-transform: uppercase;
    background: linear-gradient(180deg,
        #fff 0%,
        #fff 30%,
        var(--neon-pink) 60%,
        var(--neon-cyan) 100%
    );
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    filter: drop-shadow(0 0 30px rgba(255, 41, 117, 0.6));
    margin: 0;
    animation: textFlicker 8s linear infinite;
}

.player-content {
    display: grid;
    grid-template-columns: 1fr 280px;
    gap: 1.5rem;
    align-items: start;
    flex: 1;
    min-height: 0;
}

@media (max-width: 900px) {
    .player-content {
        grid-template-columns: 1fr;
    }
    .playlist-sidebar {
        order: 2;
    }
    .tape-name {
        font-size: 1.75rem;
    }
}

.player-main {
    display: flex;
    flex-direction: column;
    min-height: 0;
    overflow: visible;
}

.video-container {
    position: relative;
    width: 100%;
    padding-bottom: 56.25%;
    background: #000;
    border-radius: 4px;
    overflow: hidden;
    border: 3px solid var(--neon-pink);
    box-shadow:
        0 0 40px rgba(255, 41, 117, 0.5),
        inset 0 0 60px rgba(255, 41, 117, 0.1);
    flex-shrink: 0;
}

.video-container iframe,
.video-container #youtubePlayer {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}

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

.video-title {
    min-width: 0;
    flex: 1;
}

.current-track {
    font-family: 'Arial Black', 'Impact', sans-serif;
    font-size: 1rem;
    font-weight: 700;
    margin: 0 0 0.15rem 0;
    color: var(--text-primary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.current-artist {
    color: var(--neon-pink);
    font-size: 0.85rem;
    text-shadow: 0 0 15px rgba(255, 41, 117, 0.6);
    margin: 0;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.player-controls {
    display: flex;
    gap: 0.5rem;
    flex-shrink: 0;
}

.control-btn {
    padding: 0.4rem 0.8rem;
    font-size: 0.75rem;
    font-weight: 600;
    background: var(--bg-card);
    border: 1px solid var(--neon-cyan);
    border-radius: 4px;
    color: var(--neon-cyan);
    cursor: pointer;
    font-family: inherit;
    transition: all 0.3s ease;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.control-btn:hover {
    background: rgba(0, 240, 255, 0.15);
    box-shadow: 0 0 25px rgba(0, 240, 255, 0.5);
    transform: scale(1.05);
}

.control-btn.play-pause {
    min-width: 70px;
    background: linear-gradient(90deg, var(--neon-pink), var(--neon-magenta));
    color: #fff;
    border: none;
    font-weight: 700;
    box-shadow: 0 0 15px rgba(255, 41, 117, 0.5);
}

.control-btn.play-pause:hover {
    box-shadow: 0 0 40px rgba(255, 41, 117, 0.8), 0 0 80px rgba(242, 34, 255, 0.4);
}

/* Playlist Sidebar */
.playlist-sidebar {
    background: var(--bg-card);
    border: 2px solid var(--border-color);
    border-radius: 4px;
    padding: 1rem;
    backdrop-filter: blur(10px);
    max-height: 100%;
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.playlist-sidebar h3 {
    font-family: 'Arial Black', 'Impact', sans-serif;
    font-size: 0.9rem;
    font-weight: 700;
    margin-bottom: 1rem;
    padding-bottom: 0.75rem;
    border-bottom: 1px solid var(--border-color);
    color: var(--neon-pink);
    text-transform: uppercase;
    text-shadow: 0 0 15px rgba(255, 41, 117, 0.6);
    letter-spacing: 0.1em;
}

.playlist-tracks {
    display: flex;
    flex-direction: column;
    gap: 0.35rem;
    flex: 1;
    overflow-y: auto;
    min-height: 0;
}

.playlist-track {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.6rem 0.75rem;
    background: rgba(0, 0, 0, 0.3);
    border-radius: 4px;
    cursor: pointer;
    transition: all 0.2s ease;
    border: 1px solid transparent;
}

.playlist-track:hover {
    background: rgba(255, 41, 117, 0.15);
    border-color: var(--neon-pink);
}

.playlist-track.active {
    background: linear-gradient(90deg, rgba(255, 41, 117, 0.25), rgba(0, 240, 255, 0.15));
    border: 1px solid var(--neon-cyan);
    box-shadow: 0 0 15px rgba(0, 240, 255, 0.3);
}

.playlist-track-number {
    font-size: 0.75rem;
    color: var(--neon-cyan);
    width: 18px;
    text-align: center;
    font-weight: 600;
    flex-shrink: 0;
}

.playlist-track-info {
    flex: 1;
    min-width: 0;
}

.playlist-track-title {
    font-size: 0.8rem;
    font-weight: 500;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.playlist-track-artist {
    font-size: 0.7rem;
    color: var(--neon-pink);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

/* Empty State */
.empty-state {
    text-align: center;
    padding: 2rem;
    color: var(--text-muted);
    font-style: italic;
}

/* Toast */
.toast {
    position: fixed;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%) translateY(100px);
    background: linear-gradient(90deg, var(--neon-pink), var(--neon-magenta));
    color: #fff;
    padding: 1rem 2rem;
    border-radius: 4px;
    font-weight: 700;
    opacity: 0;
    transition: all 0.3s ease;
    z-index: 1000;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    box-shadow: 0 0 40px rgba(255, 41, 117, 0.6);
}

.toast.show {
    transform: translateX(-50%) translateY(0);
    opacity: 1;
}

/* Scrollbar */
::-webkit-scrollbar {
    width: 6px;
}

::-webkit-scrollbar-track {
    background: rgba(0, 0, 0, 0.3);
}

::-webkit-scrollbar-thumb {
    background: linear-gradient(180deg, var(--neon-pink), var(--neon-magenta));
    border-radius: 3px;
}

/* Mobile */
@media (max-width: 600px) {
    .logo {
        font-size: 2.8rem;
    }
    .cassette-hero {
        width: 180px;
    }
    .page-title {
        font-size: 1.75rem;
    }
    #landing .container::before,
    #landing .container::after {
        width: 150px;
        height: 150px;
    }
    .manual-entry-fields {
        flex-direction: column;
    }
    .video-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.5rem;
    }
    .player-controls {
        gap: 0.3rem;
    }
    .control-btn {
        padding: 0.3rem 0.5rem;
        font-size: 0.65rem;
    }
    .control-btn.play-pause {
        min-width: 50px;
    }
}