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

:root {
    --accent-color: #BF00FF;
    --neon-pink: #FF10F0;
    --neon-cyan: #00FFFF;
    --neon-purple: #BF00FF;
    --neon-orange: #FF6B35;
    --dark-bg: #0A0A1A;
    --panel-bg: rgba(10, 10, 26, 0.92);
}

html, body {
    width: 100%;
    height: 100%;
    overflow: hidden;
    background: var(--dark-bg);
    font-family: 'Orbitron', sans-serif;
    touch-action: manipulation;
}

#scene-container {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
}

#scene-container canvas {
    display: block;
    width: 100% !important;
    height: 100% !important;
}

#ui-overlay {
    position: fixed;
    bottom: 20px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 100;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
    max-width: 95vw;
}

#station-display {
    background: var(--panel-bg);
    border: 2px solid var(--accent-color);
    border-radius: 12px;
    padding: 12px 35px;
    text-align: center;
    box-shadow: 0 0 25px var(--accent-color),
                inset 0 0 25px rgba(0, 255, 255, 0.08);
    backdrop-filter: blur(8px);
}

#station-name {
    display: block;
    color: var(--accent-color);
    font-size: 13px;
    letter-spacing: 4px;
    text-shadow: 0 0 12px var(--accent-color);
    margin-bottom: 4px;
}

#frequency {
    display: block;
    color: var(--neon-cyan);
    font-family: 'Share Tech Mono', monospace;
    font-size: 52px;
    font-weight: bold;
    text-shadow: 0 0 25px var(--neon-cyan),
                 0 0 50px var(--neon-cyan);
    animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.85; }
}

#radio-panel {
    background: var(--panel-bg);
    border: 2px solid var(--neon-orange);
    border-radius: 16px;
    padding: 14px 22px;
    display: flex;
    align-items: center;
    gap: 18px;
    box-shadow: 0 0 35px rgba(255, 107, 53, 0.4),
                inset 0 0 25px rgba(255, 107, 53, 0.08);
    backdrop-filter: blur(8px);
    flex-wrap: wrap;
    justify-content: center;
}

.control-group {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 6px;
}

.control-group label {
    color: var(--neon-cyan);
    font-size: 10px;
    letter-spacing: 3px;
    text-shadow: 0 0 6px var(--neon-cyan);
}

.slider-container {
    position: relative;
    width: 110px;
}

input[type="range"] {
    -webkit-appearance: none;
    appearance: none;
    width: 100%;
    height: 8px;
    background: linear-gradient(90deg, var(--neon-purple), var(--neon-cyan));
    border-radius: 4px;
    outline: none;
    cursor: pointer;
}

input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 22px;
    height: 22px;
    background: var(--neon-orange);
    border-radius: 50%;
    cursor: pointer;
    box-shadow: 0 0 18px var(--neon-orange),
                0 0 35px var(--neon-orange);
    transition: transform 0.2s;
}

input[type="range"]::-webkit-slider-thumb:hover {
    transform: scale(1.15);
}

input[type="range"]::-moz-range-thumb {
    width: 22px;
    height: 22px;
    background: var(--neon-orange);
    border-radius: 50%;
    cursor: pointer;
    border: none;
    box-shadow: 0 0 18px var(--neon-orange);
}

#presets {
    display: flex;
    gap: 8px;
}

.preset-btn {
    width: 42px;
    height: 42px;
    background: rgba(30, 30, 50, 0.85);
    border: 2px solid #444;
    border-radius: 10px;
    color: #888;
    font-family: 'Orbitron', sans-serif;
    font-size: 16px;
    font-weight: bold;
    cursor: pointer;
    transition: all 0.25s;
}

.preset-btn:hover {
    border-color: var(--neon-cyan);
    color: var(--neon-cyan);
    box-shadow: 0 0 12px var(--neon-cyan);
}

.preset-btn.active {
    background: var(--neon-orange);
    border-color: var(--neon-orange);
    color: #000;
    box-shadow: 0 0 25px var(--neon-orange),
                0 0 45px var(--neon-orange);
}

#controls {
    display: flex;
    gap: 8px;
}

#controls button {
    width: 42px;
    height: 42px;
    background: rgba(30, 30, 50, 0.85);
    border: 2px solid #444;
    border-radius: 10px;
    color: #888;
    font-size: 18px;
    cursor: pointer;
    transition: all 0.25s;
    display: flex;
    align-items: center;
    justify-content: center;
}

#controls button:hover {
    border-color: var(--neon-pink);
    color: var(--neon-pink);
    box-shadow: 0 0 12px var(--neon-pink);
}

#settings-panel {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background: var(--panel-bg);
    border: 2px solid var(--neon-purple);
    border-radius: 16px;
    padding: 30px;
    z-index: 200;
    box-shadow: 0 0 60px var(--neon-purple);
    backdrop-filter: blur(12px);
    min-width: 220px;
}

#settings-panel.hidden {
    display: none;
}

#settings-panel h3 {
    color: var(--neon-purple);
    text-align: center;
    margin-bottom: 22px;
    letter-spacing: 4px;
    text-shadow: 0 0 12px var(--neon-purple);
    font-size: 16px;
}

#settings-panel label {
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--neon-cyan);
    margin: 16px 0;
    cursor: pointer;
    font-size: 13px;
}

#settings-panel input[type="checkbox"] {
    width: 18px;
    height: 18px;
    accent-color: var(--neon-pink);
    cursor: pointer;
}

#close-settings {
    display: block;
    width: 100%;
    margin-top: 22px;
    padding: 12px;
    background: var(--neon-pink);
    border: none;
    border-radius: 10px;
    color: #000;
    font-family: 'Orbitron', sans-serif;
    font-weight: bold;
    font-size: 13px;
    cursor: pointer;
    transition: all 0.25s;
    letter-spacing: 2px;
}

#close-settings:hover {
    box-shadow: 0 0 25px var(--neon-pink);
    transform: scale(1.02);
}

#crt-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 50;
    background: 
        repeating-linear-gradient(
            0deg,
            rgba(0, 0, 0, 0.08),
            rgba(0, 0, 0, 0.08) 1px,
            transparent 1px,
            transparent 2px
        );
    animation: scanlines 0.08s linear infinite;
}

#crt-overlay.no-scanlines {
    background: none;
}

@keyframes scanlines {
    0% { background-position: 0 0; }
    100% { background-position: 0 4px; }
}

#crt-overlay::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(
        ellipse at center,
        transparent 0%,
        rgba(0, 0, 0, 0.25) 100%
    );
}

#remix-link {
    position: fixed;
    bottom: 8px;
    right: 12px;
    color: var(--neon-pink);
    text-decoration: none;
    font-size: 11px;
    opacity: 0.5;
    transition: opacity 0.3s;
    z-index: 100;
    text-shadow: 0 0 6px var(--neon-pink);
    letter-spacing: 1px;
}

#remix-link:hover {
    opacity: 1;
}

/* Mobile responsive styles */
@media (max-width: 768px) {
    #ui-overlay {
        bottom: 12px;
        gap: 8px;
    }

    #station-display {
        padding: 10px 25px;
    }

    #frequency {
        font-size: 40px;
    }

    #station-name {
        font-size: 11px;
        letter-spacing: 3px;
    }

    #radio-panel {
        padding: 12px 16px;
        gap: 12px;
    }

    .slider-container {
        width: 85px;
    }

    .preset-btn {
        width: 36px;
        height: 36px;
        font-size: 14px;
    }

    #controls button {
        width: 36px;
        height: 36px;
        font-size: 16px;
    }
}

@media (max-width: 480px) {
    #ui-overlay {
        bottom: 8px;
        width: 98%;
    }

    #station-display {
        padding: 8px 18px;
        border-radius: 10px;
    }

    #station-name {
        font-size: 10px;
        letter-spacing: 2px;
    }

    #frequency {
        font-size: 32px;
    }

    #radio-panel {
        gap: 8px;
        padding: 10px 12px;
        border-radius: 12px;
    }

    .control-group label {
        font-size: 8px;
        letter-spacing: 2px;
    }

    .slider-container {
        width: 65px;
    }

    input[type="range"] {
        height: 6px;
    }

    input[type="range"]::-webkit-slider-thumb {
        width: 18px;
        height: 18px;
    }

    .preset-btn,
    #controls button {
        width: 32px;
        height: 32px;
        font-size: 12px;
        border-radius: 8px;
    }

    #presets {
        gap: 5px;
    }

    #controls {
        gap: 5px;
    }

    #settings-panel {
        width: 85%;
        padding: 22px;
    }

    #remix-link {
        font-size: 9px;
        bottom: 4px;
        right: 8px;
    }
}

/* Ensure touch targets are adequate */
@media (pointer: coarse) {
    .preset-btn,
    #controls button {
        min-width: 44px;
        min-height: 44px;
    }
    
    input[type="range"]::-webkit-slider-thumb {
        width: 28px;
        height: 28px;
    }
}