:root {
    --bg-color: #0a0a0f;
    --panel-bg: #141420;
    --panel-border: #252535;
    --text-primary: #ffffff;
    --text-secondary: #8a8a9d;
    --accent-color: #FF6600;
    --accent-hover: #FF8533;
    --accent-glow: rgba(255, 102, 0, 0.3);
    --secondary-accent: #33FF33;
    --danger: #FF3333;
    --font-heading: 'Outfit', sans-serif;
    --font-body: 'Inter', sans-serif;
    --radius-lg: 16px;
    --radius-md: 12px;
    --radius-sm: 8px;
    --transition: all 0.3s ease;
}

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

html, body {
    overflow-x: hidden !important;
    scrollbar-width: none; /* Firefox */
    -ms-overflow-style: none; /* IE/Edge */
}

html::-webkit-scrollbar,
body::-webkit-scrollbar {
    display: none; /* Chrome/Safari/Opera */
}

body {
    font-family: var(--font-body);
    background-color: var(--bg-color);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
    overflow-y: auto !important;
    display: flex;
    justify-content: center;
    background-image: 
        radial-gradient(circle at 15% 50%, rgba(255, 102, 0, 0.04) 0%, transparent 50%),
        radial-gradient(circle at 85% 30%, rgba(51, 255, 51, 0.03) 0%, transparent 50%);
}

.app-container {
    width: 100%;
    max-width: 1000px;
    padding: 2rem;
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

/* Header */
.app-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-bottom: 1.5rem;
    border-bottom: 1px solid var(--panel-border);
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.brand-logo {
    width: 48px;
    height: 48px;
    object-fit: contain;
    border-radius: 8px;
}

.brand-text h1 {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--text-primary);
    letter-spacing: 1px;
    line-height: 1.1;
}

.brand-text h1 span {
    color: #33FF33;
}

.brand-tagline {
    font-size: 0.7rem;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 2px;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    font-family: var(--font-heading);
    font-size: 0.95rem;
    font-weight: 600;
    cursor: pointer;
    border: none;
    border-radius: var(--radius-sm);
    transition: var(--transition);
}

.primary-btn {
    background: linear-gradient(135deg, #FF6600, #FF8533);
    color: #000;
    padding: 0.75rem 1.5rem;
    box-shadow: 0 4px 15px var(--accent-glow);
}

.primary-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px var(--accent-glow);
    filter: brightness(1.1);
}

.primary-btn:disabled {
    background: var(--panel-border);
    color: var(--text-secondary);
    box-shadow: none;
    cursor: not-allowed;
    transform: none;
}

.icon-btn {
    background: var(--panel-bg);
    color: var(--text-primary);
    width: 48px;
    height: 48px;
    border-radius: 50%;
    border: 1px solid var(--panel-border);
}

.icon-btn:hover:not(:disabled) {
    border-color: var(--accent-color);
    color: var(--accent-color);
    box-shadow: 0 0 15px rgba(0, 229, 255, 0.2);
}

.hidden {
    display: none !important;
}

/* Layout */
.main-content {
    display: grid;
    grid-template-columns: 1fr;
    gap: 2rem;
}

@media (min-width: 768px) {
    .main-content {
        grid-template-columns: 1fr;
    }
}

/* Visualizer Section */
.visualizer-section {
    background: var(--panel-bg);
    border: 1px solid var(--panel-border);
    border-radius: var(--radius-lg);
    padding: 1.5rem;
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.visualizer-wrapper {
    display: flex;
    gap: 1rem;
    height: 200px;
}

.visualizer-container {
    position: relative;
    flex-grow: 1;
    height: 100%;
    background: #000;
    border-radius: var(--radius-md);
    overflow: hidden;
    cursor: pointer;
}

#waveform {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
}

#visualizer {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 40%;
    z-index: 2;
    opacity: 0.6;
}

.playhead {
    position: absolute;
    top: 0;
    left: 0;
    width: 2px;
    height: 100%;
    background: var(--accent-color);
    box-shadow: 0 0 6px var(--accent-color), 0 0 12px rgba(0, 229, 255, 0.3);
    z-index: 3;
    pointer-events: none;
    transition: left 0.05s linear;
}

/* Meters */
.meters-panel {
    display: flex;
    gap: 0.5rem;
    height: 100%;
    padding: 0.5rem;
    background: rgba(0,0,0,0.4);
    border-radius: var(--radius-md);
    border: 1px solid var(--panel-border);
}

.meter {
    display: flex;
    flex-direction: column;
    align-items: center;
    width: 40px;
}

.meter-bar-container {
    flex-grow: 1;
    width: 12px;
    background: #111;
    border-radius: 6px;
    overflow: hidden;
    position: relative;
    margin-bottom: 0.5rem;
    box-shadow: inset 0 0 5px rgba(0,0,0,0.8);
}

.meter-bar {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 0%;
    transition: height 0.05s ease;
}

.lufs-bar {
    background: linear-gradient(to top, #FF6600, #33FF33);
}

.peak-bar {
    background: linear-gradient(to top, #FF6600, #FF3333);
}

.int-bar {
    background: linear-gradient(to top, #FF6600, #33FF33);
}

.meter-val {
    font-family: monospace;
    font-size: 0.7rem;
    color: var(--accent-color);
}

.meter-label {
    font-size: 0.65rem;
    color: var(--text-secondary);
    font-weight: 600;
    margin-top: 0.1rem;
}

.track-info {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    padding: 1rem;
    background: linear-gradient(to top, rgba(0,0,0,0.8) 0%, transparent 100%);
    pointer-events: none;
    z-index: 4;
}

.track-info h2 {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 0.25rem;
    text-shadow: 0 2px 4px rgba(0,0,0,0.5);
}

.track-info p {
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.transport-controls {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.progress-bar-container {
    flex-grow: 1;
}

/* Controls Section */
.controls-section {
    background: var(--panel-bg);
    border: 1px solid var(--panel-border);
    border-radius: var(--radius-lg);
    padding: 1.5rem;
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.controls-header {
    display: flex;
    justify-content: flex-start;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
}

.controls-header h2 {
    font-family: var(--font-heading);
    font-size: 1.25rem;
    margin-right: auto;
}

/* BPM Input */
.bpm-container {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.bpm-label {
    font-size: 0.9rem;
    color: var(--text-secondary);
    font-weight: 600;
}

.bpm-input {
    width: 70px;
    background: rgba(0,0,0,0.3);
    color: var(--accent-color);
    border: 1px solid var(--panel-border);
    border-radius: var(--radius-sm);
    padding: 0.4rem 0.5rem;
    font-family: monospace;
    font-size: 0.95rem;
    text-align: center;
    outline: none;
    transition: var(--transition);
    -moz-appearance: textfield;
}

.bpm-input::-webkit-outer-spin-button,
.bpm-input::-webkit-inner-spin-button {
    -webkit-appearance: none;
    margin: 0;
}

.bpm-input:hover, .bpm-input:focus {
    border-color: var(--accent-color);
    box-shadow: 0 0 10px rgba(0, 229, 255, 0.15);
}

/* Preset Selector */
.preset-container {
    flex-grow: 1;
    margin: 0 1.5rem;
}

.custom-select {
    width: 100%;
    max-width: 250px;
    background: rgba(0,0,0,0.3);
    color: var(--text-primary);
    border: 1px solid var(--panel-border);
    border-radius: var(--radius-sm);
    padding: 0.5rem 1rem;
    font-family: var(--font-body);
    font-size: 0.9rem;
    cursor: pointer;
    outline: none;
    transition: var(--transition);
    appearance: none;
    background-image: url("data:image/svg+xml;charset=US-ASCII,%3Csvg%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%20width%3D%2224%22%20height%3D%2224%22%20viewBox%3D%220%200%2024%2024%22%20fill%3D%22none%22%20stroke%3D%22%238a8a9d%22%20stroke-width%3D%222%22%20stroke-linecap%3D%22round%22%20stroke-linejoin%3D%22round%22%3E%3Cpolyline%20points%3D%226%209%2012%2015%2018%209%22%3E%3C%2Fpolyline%3E%3C%2Fsvg%3E");
    background-repeat: no-repeat;
    background-position: right 0.5rem center;
    background-size: 1rem;
}

.custom-select:hover, .custom-select:focus {
    border-color: var(--accent-color);
    box-shadow: 0 0 10px rgba(0, 229, 255, 0.1);
}

.custom-select option {
    background: var(--panel-bg);
    color: var(--text-primary);
}

/* Toggle Switch */
.toggle-container {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.toggle-label {
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.switch {
    position: relative;
    display: inline-block;
    width: 44px;
    height: 24px;
}

.switch input { 
    opacity: 0;
    width: 0;
    height: 0;
}

.slider {
    position: absolute;
    cursor: pointer;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: var(--panel-border);
    transition: .4s;
}

.slider:before {
    position: absolute;
    content: "";
    height: 18px;
    width: 18px;
    left: 3px;
    bottom: 3px;
    background-color: white;
    transition: .4s;
}

input:checked + .slider {
    background-color: var(--accent-color);
}

input:checked + .slider:before {
    transform: translateX(20px);
}

.slider.round {
    border-radius: 24px;
}

.slider.round:before {
    border-radius: 50%;
}

/* Knobs Grid */
.knobs-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1.5rem;
}

.control-card {
    background: rgba(0,0,0,0.2);
    border: 1px solid var(--panel-border);
    border-radius: var(--radius-md);
    padding: 1.25rem;
    transition: var(--transition);
}

.control-card:hover {
    border-color: rgba(255,255,255,0.1);
    background: rgba(0,0,0,0.3);
}

.accent-card {
    border-color: rgba(255, 102, 0, 0.2);
}

.accent-card:hover {
    border-color: rgba(255, 102, 0, 0.4);
    box-shadow: 0 0 15px rgba(255, 102, 0, 0.1);
}

.clarity-card {
    border-color: rgba(51, 255, 51, 0.2);
}

.clarity-card:hover {
    border-color: rgba(51, 255, 51, 0.4);
    box-shadow: 0 0 15px rgba(51, 255, 51, 0.1);
}

/* Parametric EQ Section */
.eq-section {
    margin: 1.5rem 0;
    padding: 1.2rem;
    background: var(--panel-bg);
    border: 1px solid var(--panel-border);
    border-radius: var(--radius-lg);
}

.eq-header {
    display: flex;
    align-items: baseline;
    gap: 1rem;
    margin-bottom: 0.8rem;
}

.eq-header h2 {
    font-family: var(--font-heading);
    font-size: 1.1rem;
    font-weight: 700;
}

.eq-subtitle {
    font-size: 0.75rem;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.eq-curve-container {
    position: relative;
    margin-bottom: 1rem;
}

.eq-curve-canvas {
    width: 100%;
    height: 120px;
    border-radius: var(--radius-sm);
    background: rgba(0, 0, 0, 0.4);
    border: 1px solid rgba(255, 255, 255, 0.05);
    display: block;
}

.eq-freq-labels {
    display: flex;
    justify-content: space-between;
    padding: 4px 2px 0;
    font-size: 0.6rem;
    color: var(--text-secondary);
    opacity: 0.6;
}

.eq-freq-labels span {
    flex: 1;
    text-align: center;
}

.eq-bands {
    display: grid !important;
    grid-template-columns: repeat(5, 1fr) !important;
    gap: 0.5rem !important;
}

.eq-band {
    display: flex !important;
    flex-direction: column !important;
    align-items: center !important;
    gap: 0.3rem;
    overflow: hidden !important;
}

.eq-band-label {
    font-size: 0.65rem;
    font-weight: 600;
    color: var(--text-primary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    white-space: nowrap;
}

.eq-band-val {
    font-size: 0.7rem;
    color: var(--accent-color);
    font-weight: 600;
    font-family: var(--font-heading);
}

.eq-band-freq {
    font-size: 0.55rem;
    color: var(--text-secondary);
    opacity: 0.7;
    white-space: nowrap;
}

.eq-slider {
    width: 100% !important;
    max-width: 100% !important;
    -webkit-appearance: none !important;
    appearance: none !important;
    writing-mode: horizontal-tb !important;
    height: 6px !important;
}

.control-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 0.25rem;
}

.control-header h3 {
    font-size: 1rem;
    font-weight: 600;
}

.value-display {
    font-family: monospace;
    font-size: 0.85rem;
    color: var(--accent-color);
    background: rgba(255, 102, 0, 0.1);
    padding: 0.1rem 0.4rem;
    border-radius: 4px;
}

.control-desc {
    font-size: 0.8rem;
    color: var(--text-secondary);
    margin-bottom: 1.25rem;
}

/* Custom Sliders */
.custom-slider, #seek-bar {
    -webkit-appearance: none;
    width: 100%;
    height: 6px;
    border-radius: 3px;
    background: var(--panel-border);
    outline: none;
}

.custom-slider::-webkit-slider-thumb, #seek-bar::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 18px;
    height: 18px;
    border-radius: 50%;
    background: #fff;
    cursor: pointer;
    box-shadow: 0 0 10px rgba(0,0,0,0.5);
    transition: transform 0.1s;
}

.custom-slider::-webkit-slider-thumb:hover, #seek-bar::-webkit-slider-thumb:hover {
    transform: scale(1.2);
    background: var(--accent-color);
}

/* Export Section */
.export-section {
    margin-top: 1rem;
    padding-top: 1.5rem;
    border-top: 1px solid var(--panel-border);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
}

.export-row {
    display: flex;
    align-items: center;
    gap: 1rem;
    width: 100%;
    max-width: 400px;
}

.format-select {
    background: rgba(0,0,0,0.3);
    color: var(--text-primary);
    border: 1px solid var(--panel-border);
    border-radius: var(--radius-sm);
    padding: 0.75rem 1rem;
    font-family: var(--font-body);
    font-size: 0.9rem;
    cursor: pointer;
    outline: none;
    transition: var(--transition);
    flex-shrink: 0;
}

.format-select:hover, .format-select:focus {
    border-color: var(--accent-color);
}

.format-select option {
    background: var(--panel-bg);
    color: var(--text-primary);
}

.export-btn {
    flex-grow: 1;
}

.export-status {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.spinner {
    width: 16px;
    height: 16px;
    border: 2px solid var(--text-secondary);
    border-top-color: var(--accent-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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

/* Limiter & Clipping Section */
.limiter-section {
    margin: 1.5rem 0;
    padding: 1.2rem;
    background: var(--panel-bg);
    border: 1px solid rgba(255, 102, 0, 0.25);
    border-radius: var(--radius-lg);
}

.limiter-header {
    display: flex;
    align-items: baseline;
    gap: 1rem;
    margin-bottom: 0.8rem;
}

.limiter-header h2 {
    font-family: var(--font-heading);
    font-size: 1.1rem;
    font-weight: 700;
}

.limiter-subtitle {
    font-size: 0.75rem;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.limiter-controls {
    display: grid !important;
    grid-template-columns: repeat(2, 1fr) !important;
    gap: 1rem;
}

.clip-mode-row {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-top: 1rem;
    padding-top: 0.8rem;
    border-top: 1px solid var(--panel-border);
}

.clip-mode-row label {
    font-size: 0.85rem;
    color: var(--text-secondary);
    font-weight: 600;
    white-space: nowrap;
}

.clip-select {
    background: rgba(0,0,0,0.3);
    color: var(--text-primary);
    border: 1px solid var(--panel-border);
    border-radius: var(--radius-sm);
    padding: 0.5rem 1rem;
    font-family: var(--font-body);
    font-size: 0.85rem;
    cursor: pointer;
    outline: none;
    transition: var(--transition);
    flex: 1;
}

.clip-select:hover, .clip-select:focus {
    border-color: var(--accent-color);
}

.clip-select option {
    background: var(--panel-bg);
    color: var(--text-primary);
}

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

@media (max-width: 768px) {
    .app-container {
        padding: 1rem;
        gap: 1rem;
    }

    .app-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 1rem;
    }

    .controls-header {
        flex-direction: column;
        align-items: stretch;
    }

    .controls-header h2 {
        margin-right: 0;
    }

    .preset-container {
        margin: 0;
    }

    .custom-select {
        max-width: 100%;
    }

    .knobs-grid {
        grid-template-columns: repeat(2, 1fr) !important;
        gap: 0.75rem;
    }

    .eq-bands {
        grid-template-columns: repeat(5, 1fr) !important;
    }

    .limiter-controls {
        grid-template-columns: 1fr 1fr !important;
    }

    .visualizer-wrapper {
        height: 150px;
    }

    /* Bigger touch targets */
    .custom-slider::-webkit-slider-thumb, #seek-bar::-webkit-slider-thumb {
        width: 24px !important;
        height: 24px !important;
    }

    .export-row {
        flex-direction: column;
        max-width: 100%;
    }

    .export-row .format-select,
    .export-row .export-btn {
        width: 100%;
    }
}

@media (max-width: 480px) {
    .app-container {
        padding: 0.75rem;
        gap: 0.75rem;
    }

    .brand-text h1 {
        font-size: 1.2rem;
    }

    .knobs-grid {
        grid-template-columns: 1fr !important;
        gap: 0.5rem;
    }

    .eq-bands {
        grid-template-columns: repeat(5, 1fr) !important;
        gap: 0.25rem;
    }

    .eq-band-label {
        font-size: 0.55rem !important;
    }

    .eq-band-val {
        font-size: 0.6rem !important;
    }

    .eq-curve-canvas {
        height: 80px !important;
    }

    .limiter-controls {
        grid-template-columns: 1fr !important;
    }

    .visualizer-wrapper {
        height: 120px;
    }

    .meters-panel {
        display: none;
    }

    .controls-section {
        padding: 1rem;
    }

    .control-card {
        padding: 0.75rem;
    }

    /* Even bigger touch targets for phones */
    .custom-slider::-webkit-slider-thumb, #seek-bar::-webkit-slider-thumb {
        width: 28px !important;
        height: 28px !important;
    }

    .transport-controls {
        flex-direction: column;
        gap: 0.5rem;
    }
}