:root {
    --cyan: #00FFFF;
    --magenta: #FF00FF;
    --green: #00FF00;
    --orange: #FF6600;
    --glow-intensity: 0 0 20px;
}

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

body {
    font-family: 'Rajdhani', sans-serif;
    overflow-x: hidden;
    background: #000;
    color: #fff;
    user-select: none;
    min-height: 100vh;
    position: relative;
}

/* MAIN CONTAINER - FULL BACKGROUND */
.dj-interface-container {
    position: fixed;
    width: 100vw;
    height: 100vh;
    background-image: url('https://i.postimg.cc/htsSnrNJ/Lucid-Realism-title-CPT-DECKS-Futuristic-DJ-Booth-purpose-Ul-2.jpg');
    background-size: cover;
    background-position: center center;
    background-repeat: no-repeat;
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
}

/* CONTROL OVERLAY - NO BACKGROUND! */
.control-overlay {
    position: relative;
    min-height: 100vh;
    padding: 20px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 20px;
}

/* VISUALIZER CANVAS */
.visualizer-canvas {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 1;
    opacity: 0.5;
}

/* HEADER - FLOATING */
.header {
    text-align: center;
    padding: 10px 30px;
    background: rgba(0, 0, 0, 0.3);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-radius: 30px;
    border: 1px solid rgba(255, 255, 255, 0.1);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.5);
    z-index: 10;
}

.title {
    font-family: 'Orbitron', sans-serif;
    font-size: clamp(28px, 6vw, 42px);
    font-weight: 900;
    background: linear-gradient(45deg, var(--cyan), var(--magenta));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    text-shadow: 0 0 30px var(--cyan);
    letter-spacing: 3px;
    animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.8; transform: scale(1.02); }
}

/* MINIMIZE BUTTON */
.minimize-btn {
    position: fixed;
    top: 20px;
    right: 20px;
    width: 40px;
    height: 40px;
    background: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--cyan);
    font-size: 20px;
    transition: all 0.3s ease;
    z-index: 1000;
}

.minimize-btn:hover {
    background: var(--cyan);
    color: #000;
    box-shadow: var(--glow-intensity) var(--cyan);
}

/* MOBILE DECK SWITCHER */
.deck-switcher {
    display: none;
    width: 100%;
    max-width: 400px;
    background: rgba(0, 0, 0, 0.3);
    backdrop-filter: blur(10px);
    border-radius: 30px;
    padding: 5px;
    display: flex;
    gap: 5px;
    border: 1px solid rgba(255, 255, 255, 0.1);
    z-index: 10;
}

.deck-switch-btn {
    flex: 1;
    padding: 12px;
    background: transparent;
    border: none;
    border-radius: 25px;
    color: #fff;
    font-family: 'Orbitron', sans-serif;
    font-weight: 700;
    cursor: pointer;
    transition: all 0.3s ease;
}

.deck-switch-btn.active {
    background: linear-gradient(45deg, var(--cyan), var(--magenta));
    box-shadow: 0 0 20px var(--cyan);
}

/* DECK CONTAINER */
.decks-container {
    width: 100%;
    max-width: 1400px;
    display: flex;
    gap: 20px;
    flex-wrap: wrap;
    justify-content: center;
    z-index: 5;
}

/* INDIVIDUAL DECK - COMPLETELY TRANSPARENT! */
.deck {
    flex: 1;
    min-width: 300px;
    max-width: 600px;
    padding: 20px;
    position: relative;
}

/* TURNTABLE CONTAINER */
.turntable-container {
    position: relative;
    margin-bottom: 20px;
}

/* TURNTABLE DROP ZONE - TRANSPARENT */
.turntable-drop-zone {
    width: 200px;
    height: 200px;
    margin: 0 auto;
    border: 3px dashed var(--cyan);
    border-radius: 50%;
    background: transparent;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    position: relative;
}

.deck-b .turntable-drop-zone {
    border-color: var(--magenta);
}

.turntable-drop-zone.drag-over {
    transform: scale(1.05);
    box-shadow: var(--glow-intensity) var(--cyan);
    border-color: var(--green);
}

/* VINYL RECORD - REALISTIC */
.vinyl-record {
    position: absolute;
    width: 190px;
    height: 190px;
    border-radius: 50%;
    background: #0a0a0a;
    display: none;
    transform-style: preserve-3d;
    transition: transform 0.3s ease;
}

.vinyl-record.loaded {
    display: block;
}

.vinyl-record.playing {
    animation: spin 2s linear infinite;
}

@keyframes spin {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

/* VINYL GROOVES */
.vinyl-grooves {
    position: absolute;
    width: 100%;
    height: 100%;
    border-radius: 50%;
    background: repeating-radial-gradient(
        circle at center,
        #0a0a0a 0px,
        #1a1a1a 1px,
        #0a0a0a 2px,
        #1a1a1a 3px
    );
    opacity: 0.8;
}

/* VINYL LABEL */
.vinyl-label {
    position: absolute;
    width: 70px;
    height: 70px;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background: radial-gradient(circle at center, #333, #111);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    box-shadow: inset 0 0 10px rgba(0, 0, 0, 0.5);
}

.album-art {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: none;
}

.album-art.loaded {
    display: block;
}

.label-text {
    font-size: 24px;
    font-weight: bold;
    color: #fff;
    text-shadow: 0 0 5px #000;
}

/* NEEDLE */
.needle {
    position: absolute;
    width: 80px;
    height: 3px;
    background: linear-gradient(to right, #666, #999, #666);
    top: 50%;
    right: -40px;
    transform-origin: right center;
    transform: rotate(-20deg);
    transition: transform 0.5s ease;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.3);
    display: none;
}

.needle.active {
    display: block;
}

.needle.playing {
    transform: rotate(0deg);
}

/* DROP TEXT */
.drop-text {
    font-size: 14px;
    color: var(--cyan);
    text-align: center;
    text-shadow: 0 0 10px var(--cyan);
}

.deck-b .drop-text {
    color: var(--magenta);
    text-shadow: 0 0 10px var(--magenta);
}

/* LOADING SPINNER */
.loading-spinner {
    position: absolute;
    width: 50px;
    height: 50px;
    border: 3px solid transparent;
    border-top-color: var(--cyan);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    display: none;
}

.loading-spinner.active {
    display: block;
}

/* TRANSPORT CONTROLS */
.transport-controls {
    display: flex;
    justify-content: center;
    gap: 15px;
    margin-bottom: 20px;
}

.play-pause-btn {
    width: 60px;
    height: 60px;
    background: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(10px);
    border: 2px solid var(--cyan);
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    color: var(--cyan);
    transition: all 0.3s ease;
}

.deck-b .play-pause-btn {
    border-color: var(--magenta);
    color: var(--magenta);
}

.play-pause-btn.playing {
    background: var(--cyan);
    color: #000;
    box-shadow: var(--glow-intensity) var(--cyan);
    animation: beatPulse 0.5s ease-in-out infinite;
}

.deck-b .play-pause-btn.playing {
    background: var(--magenta);
    box-shadow: var(--glow-intensity) var(--magenta);
}

@keyframes beatPulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.1); }
}

.cue-btn {
    width: 50px;
    height: 50px;
    background: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(10px);
    border: 2px solid var(--orange);
    border-radius: 5px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 12px;
    font-weight: bold;
    color: var(--orange);
    transition: all 0.3s ease;
}

.cue-btn:active {
    background: var(--orange);
    color: #000;
}

/* LOOP CONTROLS */
.loop-controls {
    display: flex;
    justify-content: center;
    gap: 10px;
    margin-bottom: 20px;
}

.loop-btn {
    flex: 1;
    padding: 10px;
    background: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(10px);
    border: 1px solid var(--cyan);
    border-radius: 5px;
    cursor: pointer;
    font-size: 14px;
    color: var(--cyan);
    transition: all 0.3s ease;
}

.deck-b .loop-btn {
    border-color: var(--magenta);
    color: var(--magenta);
}

.loop-btn.active {
    background: var(--cyan);
    color: #000;
}

.deck-b .loop-btn.active {
    background: var(--magenta);
}

/* VOLUME CONTROL */
.volume-control {
    margin-bottom: 20px;
}

.control-label {
    font-size: 12px;
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 10px;
    color: var(--cyan);
    text-align: center;
    text-shadow: 0 0 10px var(--cyan);
}

.deck-b .control-label {
    color: var(--magenta);
    text-shadow: 0 0 10px var(--magenta);
}

.volume-slider {
    width: 100%;
    height: 40px;
    -webkit-appearance: none;
    appearance: none;
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border-radius: 20px;
    outline: none;
    cursor: pointer;
}

.volume-slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 40px;
    height: 40px;
    background: var(--cyan);
    border-radius: 50%;
    cursor: pointer;
    box-shadow: var(--glow-intensity) var(--cyan);
}

.deck-b .volume-slider::-webkit-slider-thumb {
    background: var(--magenta);
    box-shadow: var(--glow-intensity) var(--magenta);
}

/* EQ SECTION */
.eq-section {
    display: flex;
    justify-content: space-around;
    margin-bottom: 20px;
    gap: 10px;
}

.eq-knob {
    flex: 1;
    text-align: center;
}

.knob {
    width: 60px;
    height: 60px;
    background: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(10px);
    border: 2px solid var(--cyan);
    border-radius: 50%;
    cursor: pointer;
    position: relative;
    margin: 0 auto 5px;
    touch-action: none;
}

.deck-b .knob {
    border-color: var(--magenta);
}

.knob-indicator {
    position: absolute;
    width: 2px;
    height: 25px;
    background: var(--cyan);
    top: 5px;
    left: 50%;
    transform-origin: bottom;
    transform: translateX(-50%) rotate(0deg);
    pointer-events: none;
    box-shadow: 0 0 10px var(--cyan);
}

.deck-b .knob-indicator {
    background: var(--magenta);
    box-shadow: 0 0 10px var(--magenta);
}

.eq-label {
    font-size: 11px;
    text-transform: uppercase;
    color: var(--cyan);
    text-shadow: 0 0 5px var(--cyan);
}

.deck-b .eq-label {
    color: var(--magenta);
    text-shadow: 0 0 5px var(--magenta);
}

/* WAVEFORM DISPLAY */
.waveform-display {
    width: 100%;
    height: 60px;
    background: rgba(0, 0, 0, 0.3);
    backdrop-filter: blur(5px);
    border: 1px solid var(--cyan);
    border-radius: 10px;
    overflow: hidden;
    margin-bottom: 10px;
    position: relative;
}

.deck-b .waveform-display {
    border-color: var(--magenta);
}

.waveform-canvas {
    width: 100%;
    height: 100%;
}

.track-info {
    position: absolute;
    top: -20px;
    left: 0;
    right: 0;
    text-align: center;
    font-size: 12px;
    color: var(--cyan);
    text-shadow: 0 0 10px var(--cyan);
}

.deck-b .track-info {
    color: var(--magenta);
    text-shadow: 0 0 10px var(--magenta);
}

/* SPECTRUM ANALYZER */
.spectrum-canvas {
    width: 100%;
    height: 80px;
    border: 1px solid var(--cyan);
    border-radius: 10px;
    margin-bottom: 10px;
    background: rgba(0, 0, 0, 0.2);
}

.deck-b .spectrum-canvas {
    border-color: var(--magenta);
}

/* BPM DISPLAY */
.deck-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 15px;
}

.deck-label {
    font-family: 'Orbitron', sans-serif;
    font-size: 18px;
    font-weight: 700;
    color: var(--cyan);
    text-shadow: 0 0 10px var(--cyan);
}

.deck-b .deck-label {
    color: var(--magenta);
    text-shadow: 0 0 10px var(--magenta);
}

.bpm-display {
    background: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(10px);
    padding: 5px 15px;
    border-radius: 20px;
    border: 1px solid var(--cyan);
    font-family: 'Orbitron', sans-serif;
    font-size: 12px;
    color: var(--cyan);
    display: flex;
    align-items: center;
    gap: 5px;
}

.deck-b .bpm-display {
    border-color: var(--magenta);
    color: var(--magenta);
}

.led-indicator {
    display: inline-block;
    width: 8px;
    height: 8px;
    background: #333;
    border-radius: 50%;
    transition: all 0.3s ease;
}

.led-indicator.active {
    background: var(--green);
    box-shadow: 0 0 10px var(--green);
    animation: ledBlink 0.5s ease-in-out infinite;
}

@keyframes ledBlink {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

/* MIXER SECTION - FLOATING */
.mixer-section {
    width: 100%;
    max-width: 400px;
    padding: 20px;
    z-index: 10;
}

/* CROSSFADER */
.crossfader-container {
    margin-bottom: 20px;
}

.crossfader {
    width: 100%;
    height: 50px;
    -webkit-appearance: none;
    appearance: none;
    background: linear-gradient(to right, 
        rgba(0, 255, 255, 0.2) 0%, 
        transparent 50%, 
        rgba(255, 0, 255, 0.2) 100%);
    backdrop-filter: blur(10px);
    border-radius: 25px;
    outline: none;
    cursor: pointer;
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.crossfader::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 50px;
    height: 50px;
    background: rgba(255, 255, 255, 0.9);
    border-radius: 50%;
    cursor: pointer;
    box-shadow: 0 0 20px rgba(255, 255, 255, 0.8);
}

.crossfader-labels {
    display: flex;
    justify-content: space-between;
    margin-top: 10px;
    font-size: 14px;
    font-weight: bold;
}

.crossfader-labels span:first-child {
    color: var(--cyan);
    text-shadow: 0 0 10px var(--cyan);
}

.crossfader-labels span:last-child {
    color: var(--magenta);
    text-shadow: 0 0 10px var(--magenta);
}

/* MASTER VOLUME */
.master-volume {
    text-align: center;
}

.master-knob {
    width: 80px;
    height: 80px;
    background: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(10px);
    border: 3px solid var(--green);
    border-radius: 50%;
    cursor: pointer;
    position: relative;
    margin: 0 auto 10px;
    touch-action: none;
}

.master-knob-indicator {
    position: absolute;
    width: 3px;
    height: 30px;
    background: var(--green);
    top: 10px;
    left: 50%;
    transform-origin: bottom;
    transform: translateX(-50%) rotate(0deg);
    pointer-events: none;
    box-shadow: 0 0 10px var(--green);
}

.master-label {
    font-size: 14px;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--green);
    font-weight: bold;
    text-shadow: 0 0 10px var(--green);
}

/* FILE INPUT HIDDEN */
.file-input {
    display: none;
}

/* RESPONSIVE */
@media (max-width: 768px) {
    .control-overlay {
        padding: 10px;
    }

    .deck-switcher {
        display: flex;
    }

    .decks-container {
        position: relative;
        min-height: 400px;
    }

    .deck {
        position: absolute;
        width: 100%;
        opacity: 0;
        pointer-events: none;
        transition: opacity 0.3s ease;
    }

    .deck.active {
        opacity: 1;
        pointer-events: all;
        position: relative;
    }

    .deck-header {
        display: none;
    }

    .turntable-drop-zone {
        width: 150px;
        height: 150px;
    }

    .vinyl-record {
        width: 140px;
        height: 140px;
    }

    .play-pause-btn {
        width: 50px;
        height: 50px;
        font-size: 20px;
    }

    .cue-btn {
        width: 40px;
        height: 40px;
        font-size: 10px;
    }

    .knob {
        width: 50px;
        height: 50px;
    }
}

/* MINIMIZED STATE */
.controls-minimized .decks-container,
.controls-minimized .mixer-section {
    display: none;
}

.controls-minimized .header {
    position: fixed;
    bottom: 20px;
    left: 50%;
    transform: translateX(-50%);
}