:root {
    --bg-darker: #121212;
    --bg-dark: #1a1a1a;
    --bg-light: #2a2a2a;
    --bg-lighter: #3a3a3a;
    --text-primary: #ffffff;
    --text-secondary: #999999;
    --primary-color: #006eff;
    --secondary-color: #00ff9d;
    --border-color: #333333;
    --danger-color: #ff4444;
    --success-color: #00C851;
    --warning-color: #ffbb33;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
                 "Helvetica Neue", Arial, sans-serif;
    background-color: var(--bg-darker);
    color: var(--text-primary);
    line-height: 1.5;
}

/* Track Information */
.track-info {
    padding: 0.5rem;
    background-color: var(--bg-dark);
    border: 1px solid var(--border-color);
    border-radius: 0.25rem;
    margin-bottom: 0.5rem;
}

.track-title {
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.25rem;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.track-details {
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.track-details span {
    display: inline-block;
    margin-right: 1rem;
}

/* Spectrum Analyzer */
.spectrum-analyzer {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: transparent;
    pointer-events: none;
    opacity: 0.8;
}

/* Volume Controls */
.volume-control {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.volume-slider {
    -webkit-appearance: slider-vertical;
    writing-mode: bt-lr;
    width: 8px;
    height: 100px;
    background: var(--bg-light);
    outline: none;
    opacity: 0.7;
    transition: opacity .2s;
}

.volume-slider:hover {
    opacity: 1;
}

.volume-slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 16px;
    height: 16px;
    border-radius: 50%;
    background: var(--primary-color);
    cursor: pointer;
}

.volume-slider::-moz-range-thumb {
    width: 16px;
    height: 16px;
    border-radius: 50%;
    background: var(--primary-color);
    cursor: pointer;
    border: none;
}

.volume-label {
    font-size: 0.75rem;
    color: var(--text-secondary);
    text-align: center;
    min-width: 3em;
}

/* VU Meter */
.vu-meter {
    width: 30px;
    height: 100px;
    background: var(--bg-dark);
    border: 1px solid var(--border-color);
    border-radius: 3px;
    position: relative;
    overflow: hidden;
}

.vu-meter-level {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background: linear-gradient(to top,
        var(--success-color) 0%,
        var(--warning-color) 70%,
        var(--danger-color) 90%
    );
    transition: height 0.1s ease;
}

.vu-meter-level.low {
    background: var(--success-color);
}

.vu-meter-level.medium {
    background: var(--warning-color);
}

.vu-meter-level.high {
    background: var(--danger-color);
}

/* Forms and Buttons */
.btn {
    border-radius: 0.25rem;
    padding: 0.375rem 0.75rem;
    font-size: 0.875rem;
    font-weight: 500;
    transition: all 0.2s;
}

.btn-dark {
    background-color: var(--bg-light);
    border-color: var(--border-color);
    color: var(--text-primary);
}

.btn-dark:hover {
    background-color: var(--bg-lighter);
}

.btn-primary {
    background-color: var(--primary-color);
    border-color: var(--primary-color);
    color: white;
}

.btn-primary:hover {
    filter: brightness(1.1);
}

/* Notifications */
.alert {
    position: fixed;
    top: 1rem;
    left: 50%;
    transform: translateX(-50%);
    padding: 0.75rem 1.25rem;
    border-radius: 0.25rem;
    z-index: 1050;
    box-shadow: 0 2px 4px rgba(0,0,0,0.2);
}

.alert-success {
    background-color: var(--success-color);
    color: white;
}

.alert-danger {
    background-color: var(--danger-color);
    color: white;
}

/* Animations */
@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

.fade-in {
    animation: fadeIn 0.3s ease-in;
}

/* Drag and Drop */
.drag-over {
    border: 2px dashed var(--primary-color) !important;
    background-color: var(--bg-lighter) !important;
}

/* Scrollbars */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: var(--bg-dark);
}

::-webkit-scrollbar-thumb {
    background: var(--bg-lighter);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--primary-color);
}