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

:root {
    --color-bg: #ffffff;
    --color-fg: #000000;
    --color-border: #e0e0e0;
    --color-panel-bg: #f9f9f9;
    --color-panel-border: #e0e0e0;
    --color-btn-bg: #007bff;
    --color-btn-fg: #ffffff;
    --color-btn-hover: #0056b3;
    --color-wave: #1f77b4;
    --color-grid: #d3d3d3;
    --color-status-ok: #28a745;
    --color-status-error: #dc3545;
}

@media (prefers-color-scheme: dark) {
    :root {
        --color-bg: #1e1e1e;
        --color-fg: #e0e0e0;
        --color-border: #404040;
        --color-panel-bg: #2d2d2d;
        --color-panel-border: #404040;
        --color-btn-bg: #0056b3;
        --color-btn-fg: #e0e0e0;
        --color-btn-hover: #0080ff;
        --color-wave: #4fa3ff;
        --color-grid: #505050;
    }
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: var(--color-bg);
    color: var(--color-fg);
    line-height: 1.5;
}

.container {
    width: 100%;
    max-width: 1400px;
    margin: 0 auto;
    padding: 12px 20px;
}

header {
    margin-bottom: 12px;
    border-bottom: 2px solid var(--color-border);
    padding-bottom: 8px;
}

header h1 {
    font-size: 1.4em;
    font-weight: 600;
}

.content {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

/* Panel Styles */
.panel {
    border: 1px solid var(--color-panel-border);
    border-radius: 8px;
    background-color: var(--color-panel-bg);
    overflow: hidden;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.panel-header {
    padding: 8px 20px;
    border-bottom: 1px solid var(--color-panel-border);
    background-color: rgba(0, 0, 0, 0.02);
}

.panel-header h2 {
    font-size: 1em;
    font-weight: 600;
}

h3 {
    font-size: 1em;
    font-weight: 600;
}

.panel-body {
    padding: 12px 20px;
}

/* Compact layout for the panels above the waveform */
.file-panel .panel-body,
.info-panel .panel-body,
.settings-panel .panel-body {
    padding: 12px 20px;
}

/* File Panel */
.file-panel .panel-body {
    text-align: center;
}

.file-input-wrapper {
    position: relative;
    display: inline-block;
    width: 100%;
    max-width: 400px;
}

.file-input {
    display: none;
}

.file-label {
    display: block;
    padding: 8px 16px;
    border: 2px dashed var(--color-border);
    border-radius: 8px;
    background-color: rgba(127, 127, 127, 0.05);
    cursor: pointer;
    transition: all 0.3s ease;
    font-size: 0.95em;
}

.file-label:hover {
    border-color: var(--color-btn-bg);
    background-color: rgba(0, 123, 255, 0.05);
}

.file-input-wrapper.drag-over .file-label {
    border-color: var(--color-btn-bg);
    background-color: rgba(0, 123, 255, 0.1);
}

/* Info Panel */
.info-panel .panel-body {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 6px 20px;
    align-content: start;
}

.info-row {
    display: flex;
    flex-direction: row;
    gap: 10px;
    padding: 0;
    border-bottom: none;
    align-items: center;
}

.info-row label {
    font-weight: 600;
    color: var(--color-fg);
    font-size: 0.9em;
}

.info-row span {
    font-family: 'Courier New', monospace;
    color: var(--color-fg);
    font-size: 0.95em;
    min-width: 0;
    overflow-wrap: anywhere;
}

/* Settings Panel */
.settings-row {
    display: flex;
    gap: 30px;
    margin-bottom: 12px;
}

.settings-row .settings-group {
    flex: 1;
    margin-bottom: 0;
}

.settings-group {
    margin-bottom: 12px;
}

.settings-panel .panel-body > .settings-group:last-child {
    margin-bottom: 0;
}

.settings-group {
    display: flex;
    flex-direction: column;
    gap: 5px;
}

.settings-group label {
    font-weight: 600;
    font-size: 0.9em;
}

.settings-row .settings-group {
    display: flex;
    flex-direction: row;
    align-items: center;
    gap: 8px;
}

.settings-row .settings-group label {
    white-space: nowrap;
    margin-bottom: 0;
}

.settings-row .settings-group select,
.settings-row .settings-group input[type="range"] {
    flex: 1;
}

.range-inputs {
    display: flex;
    gap: 15px;
    flex-wrap: wrap;
}

.range-sliders {
    display: flex;
    flex-wrap: wrap;
    gap: 8px 30px;
}

.range-sliders .slider-group {
    flex: 1;
    min-width: 320px;
}

.slider-group {
    display: flex;
    align-items: center;
    gap: 10px;
}

.slider-group label {
    font-size: 0.9em;
    min-width: 70px;
}

.slider-group .slider {
    flex: 1;
    min-width: 120px;
}

.slider-group span {
    font-family: 'Courier New', monospace;
    font-size: 0.9em;
    min-width: 70px;
    text-align: right;
}

.input-group {
    display: flex;
    flex-direction: row;
    align-items: center;
    gap: 8px;
    flex: 1;
    min-width: 150px;
}

.input-group label {
    font-size: 0.9em;
    margin-bottom: 0;
    white-space: nowrap;
}

.input-group input[type="number"] {
    padding: 8px 10px;
    border: 1px solid var(--color-border);
    border-radius: 4px;
    background-color: var(--color-bg);
    color: var(--color-fg);
    font-family: 'Courier New', monospace;
}

.input-group input[type="number"]:focus {
    outline: none;
    border-color: var(--color-btn-bg);
    box-shadow: 0 0 0 3px rgba(0, 123, 255, 0.1);
}

.slider {
    width: 100%;
    height: 6px;
    border-radius: 3px;
    background: var(--color-border);
    outline: none;
    -webkit-appearance: none;
}

.slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 18px;
    height: 18px;
    border-radius: 50%;
    background: var(--color-btn-bg);
    cursor: pointer;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
}

.slider::-moz-range-thumb {
    width: 18px;
    height: 18px;
    border-radius: 50%;
    background: var(--color-btn-bg);
    cursor: pointer;
    border: none;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
}

.button-group {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
}

.marker-controls {
    display: flex;
    gap: 10px;
    align-items: center;
    flex-wrap: wrap;
    margin-bottom: 6px;
}

.marker-controls span {
    font-family: 'Courier New', monospace;
    font-size: 0.9em;
    padding: 5px 10px;
    background-color: rgba(0, 0, 0, 0.05);
    border-radius: 4px;
}

.marker-result {
    display: flex;
    gap: 15px;
    align-items: center;
}

.marker-result label {
    font-weight: 600;
    font-size: 0.9em;
}

.marker-result span {
    font-family: 'Courier New', monospace;
    font-size: 0.95em;
    font-weight: 600;
    color: #dc3545;
}

/* Button Styles */
.btn {
    padding: 6px 16px;
    border: none;
    border-radius: 4px;
    font-size: 0.95em;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
}

.btn-primary {
    background-color: var(--color-btn-bg);
    color: var(--color-btn-fg);
}

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

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

.btn-secondary {
    background-color: transparent;
    color: var(--color-btn-bg);
    border: 1px solid var(--color-btn-bg);
}

.btn-secondary:hover {
    background-color: rgba(0, 123, 255, 0.1);
}

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

/* Canvas Panel */
.canvas-panel {
    margin-top: 0;
}

.canvas-body {
    padding: 0;
    display: flex;
    justify-content: center;
    background-color: var(--color-bg);
}

canvas {
    display: block;
    border: 1px solid var(--color-panel-border);
    background-color: var(--color-bg);
    max-width: 100%;
    height: auto;
}

/* Status Bar */
.status-bar {
    display: flex;
    align-items: center;
    gap: 15px;
    padding: 12px 20px;
    background-color: var(--color-panel-bg);
    border: 1px solid var(--color-panel-border);
    border-radius: 4px;
    font-size: 0.9em;
}

.status-text {
    flex: 1;
}

.progress-bar {
    width: 200px;
    height: 20px;
    background-color: var(--color-border);
    border-radius: 10px;
    overflow: hidden;
}

.progress-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--color-btn-bg), var(--color-btn-hover));
    width: 0%;
    transition: width 0.2s ease;
}

/* Responsive Design */
@media (max-width: 768px) {
    .container {
        padding: 15px;
    }

    header h1 {
        font-size: 1.5em;
    }

    canvas {
        width: 100%;
        height: auto;
    }

    .range-inputs {
        flex-direction: column;
    }

    .input-group {
        min-width: 100%;
    }

    .button-group {
        flex-direction: column;
    }

    .btn {
        width: 100%;
    }
}