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

/* Custom Properties */
:root {
    --font-mono: "SF Mono", ui-monospace, "Cascadia Mono", "Segoe UI Mono", monospace;
    --color-bg: #000000;
    --color-text: #ffffff;
}

body {
    background-color: var(--color-bg);
    color: var(--color-text);
    overflow: hidden;
    display: flex;
    flex-direction: column;
    height: 100vh;
    font-family: var(--font-mono);
}

#spectrogram {
    width: 100%;
    height: 100vh;
    position: absolute;
    inset: 0;
    display: block;
}

.drop-zone {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    background: rgba(0, 0, 0, 0.7);
    border: 3px dashed rgba(255, 255, 255, 0.3);
    transition: all 0.3s ease;
    cursor: pointer;
}

.drop-zone.drag-over {
    background: rgba(0, 0, 0, 0.9);
    border-color: rgba(255, 255, 255, 0.6);
}

.drop-zone.hidden {
    display: none;
}

.drop-zone-content {
    text-align: center;
    pointer-events: none;
}

.drop-zone-text {
    font-size: 24px;
    margin-bottom: 10px;
    color: var(--color-text);
}

.drop-zone-hint {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.6);
}

.controls {
    position: fixed;
    bottom: 20px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 1001;
    display: flex;
    gap: 10px;
}

.download-btn {
    font-family: var(--font-mono);
    background-color: rgba(255, 255, 255, 0.1);
    color: white;
    border: 1px solid rgba(255, 255, 255, 0.3);
    padding: 12px 24px;
    font-size: 14px;
    cursor: pointer;
    transition: all 0.3s ease;
    border-radius: 4px;
}

.download-btn:hover {
    background-color: rgba(255, 255, 255, 0.2);
    border-color: rgba(255, 255, 255, 0.5);
}

.download-btn:active {
    transform: scale(0.98);
}

.status {
    position: fixed;
    top: 20px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 1002;
    background: rgba(0, 0, 0, 0.8);
    color: var(--color-text);
    padding: 10px 20px;
    border-radius: 4px;
    font-size: 14px;
    display: none;
}

.status.show {
    display: block;
}