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

:root {
    --neon-blue: #00d4ff;
    --neon-pink: #ff2d95;
    --neon-green: #39ff14;
    --deep-purple: #1a0a2e;
    --near-black: #0d0d0d;
    --dark-surface: rgba(20, 10, 40, 0.7);
}

body {
    background: linear-gradient(135deg, var(--deep-purple) 0%, var(--near-black) 50%, #0a0015 100%);
    min-height: 100vh;
    font-family: 'Outfit', sans-serif;
    color: #e0e0e0;
    overflow-x: hidden;
}

body::before {
    content: '';
    position: fixed;
    top: 0; left: 0; right: 0; bottom: 0;
    background: 
        radial-gradient(ellipse at 20% 20%, rgba(0, 212, 255, 0.05) 0%, transparent 50%),
        radial-gradient(ellipse at 80% 80%, rgba(255, 45, 149, 0.05) 0%, transparent 50%),
        radial-gradient(ellipse at 50% 50%, rgba(57, 255, 20, 0.02) 0%, transparent 40%);
    pointer-events: none;
    z-index: 0;
}

#root {
    position: relative;
    z-index: 1;
}

.font-display {
    font-family: 'Archivo Black', sans-serif;
}

.font-mono {
    font-family: 'JetBrains Mono', monospace;
}

.glass-panel {
    background: rgba(20, 10, 45, 0.6);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 16px;
}

.neon-text-blue {
    color: var(--neon-blue);
    text-shadow: 0 0 10px rgba(0, 212, 255, 0.5), 0 0 40px rgba(0, 212, 255, 0.2);
}

.neon-text-pink {
    color: var(--neon-pink);
    text-shadow: 0 0 10px rgba(255, 45, 149, 0.5), 0 0 40px rgba(255, 45, 149, 0.2);
}

.neon-text-green {
    color: var(--neon-green);
    text-shadow: 0 0 10px rgba(57, 255, 20, 0.5), 0 0 40px rgba(57, 255, 20, 0.2);
}

.drop-zone {
    border: 2px dashed rgba(0, 212, 255, 0.4);
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.drop-zone:hover, .drop-zone.drag-over {
    border-color: var(--neon-pink);
    box-shadow: 0 0 30px rgba(255, 45, 149, 0.15), inset 0 0 30px rgba(255, 45, 149, 0.05);
}

.amp-button {
    background: linear-gradient(180deg, #3a3a3a 0%, #1a1a1a 100%);
    border: 2px solid #555;
    border-radius: 8px;
    box-shadow: 0 4px 8px rgba(0,0,0,0.5), inset 0 1px 0 rgba(255,255,255,0.1);
    transition: all 0.15s ease;
    cursor: pointer;
    color: #ddd;
    font-family: 'Outfit', sans-serif;
    font-weight: 700;
}

.amp-button:hover {
    background: linear-gradient(180deg, #4a4a4a 0%, #2a2a2a 100%);
}

.amp-button:active {
    transform: translateY(2px);
    box-shadow: 0 1px 3px rgba(0,0,0,0.5), inset 0 1px 0 rgba(255,255,255,0.1);
}

.amp-button.active-play {
    border-color: var(--neon-green);
    box-shadow: 0 0 15px rgba(57, 255, 20, 0.3), 0 4px 8px rgba(0,0,0,0.5);
}

.mode-btn {
    padding: 8px 16px;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.2s ease;
    background: rgba(255,255,255,0.05);
    border: 1px solid rgba(255,255,255,0.1);
    color: #999;
    font-family: 'Outfit', sans-serif;
    font-weight: 700;
    font-size: 13px;
}

.mode-btn:hover {
    background: rgba(255,255,255,0.1);
}

.mode-btn.active {
    background: rgba(0, 212, 255, 0.15);
    border-color: var(--neon-blue);
    color: var(--neon-blue);
    box-shadow: 0 0 15px rgba(0, 212, 255, 0.15);
}

.slider-track {
    -webkit-appearance: none;
    appearance: none;
    height: 6px;
    border-radius: 3px;
    background: linear-gradient(90deg, rgba(0,212,255,0.3), rgba(255,45,149,0.3));
    outline: none;
}

.slider-track::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--neon-blue), var(--neon-pink));
    cursor: pointer;
    box-shadow: 0 0 10px rgba(0,212,255,0.4);
}

.slider-track::-moz-range-thumb {
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--neon-blue), var(--neon-pink));
    cursor: pointer;
    border: none;
    box-shadow: 0 0 10px rgba(0,212,255,0.4);
}

canvas#vizCanvas {
    display: block;
    border-radius: 12px;
}

.progress-bar-container {
    position: relative;
    height: 40px;
    cursor: pointer;
    border-radius: 8px;
    overflow: hidden;
    background: rgba(255,255,255,0.03);
}

.floating-note {
    position: absolute;
    animation: floatNote 3s ease-in-out infinite;
    opacity: 0.3;
    font-size: 24px;
    pointer-events: none;
}

@keyframes floatNote {
    0%, 100% { transform: translateY(0px) rotate(0deg); opacity: 0.2; }
    50% { transform: translateY(-20px) rotate(15deg); opacity: 0.5; }
}

@keyframes pulse-glow {
    0%, 100% { opacity: 0.6; }
    50% { opacity: 1; }
}

.applause-btn {
    background: linear-gradient(135deg, #ff6b35, #ff2d95);
    border: none;
    border-radius: 50%;
    width: 56px;
    height: 56px;
    cursor: pointer;
    font-size: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s ease;
    box-shadow: 0 4px 15px rgba(255, 45, 149, 0.3);
}

.applause-btn:hover {
    transform: scale(1.1);
    box-shadow: 0 4px 25px rgba(255, 45, 149, 0.5);
}

.applause-btn:active {
    transform: scale(0.95);
}

.sfx-toggle-btn {
    padding: 6px 12px;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.2s ease;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    color: #666;
    font-family: 'Outfit', sans-serif;
    font-weight: 700;
    font-size: 12px;
    letter-spacing: 0.5px;
}

.sfx-toggle-btn:hover {
    background: rgba(255, 255, 255, 0.1);
}

.sfx-toggle-btn.active {
    background: rgba(57, 255, 20, 0.12);
    border-color: var(--neon-green);
    color: var(--neon-green);
    box-shadow: 0 0 12px rgba(57, 255, 20, 0.15);
}

.bpm-display {
    font-family: 'JetBrains Mono', monospace;
    font-size: 28px;
    font-weight: 700;
    color: var(--neon-green);
    text-shadow: 0 0 15px rgba(57, 255, 20, 0.5);
    letter-spacing: 2px;
}

@keyframes scanline {
    0% { transform: translateY(-100%); }
    100% { transform: translateY(100vh); }
}

.scanline-overlay {
    position: fixed;
    top: 0; left: 0; right: 0;
    height: 2px;
    background: rgba(0, 212, 255, 0.03);
    animation: scanline 8s linear infinite;
    pointer-events: none;
    z-index: 100;
}

footer a {
    color: var(--neon-blue);
    text-decoration: none;
    transition: color 0.2s;
}

footer a:hover {
    color: var(--neon-pink);
}

@media (max-width: 768px) {
    .bpm-display {
        font-size: 20px;
    }
}