/* OFDM PAPR & Clipping Visualizer – Dark engineering theme */
.papr-container {
    display: grid;
    grid-template-columns: 200px 1fr;
    grid-template-rows: auto 1fr;
    gap: 12px;
    max-width: 1000px;
    min-height: 560px;
    font-family: 'Courier New', Courier, monospace;
    background: #0a0a0a;
    color: #c0c0c0;
    border-radius: 8px;
    padding: 12px;
    box-sizing: border-box;
}

.papr-container * {
    box-sizing: border-box;
}

.papr-sidebar {
    grid-column: 1;
    grid-row: 1 / -1;
    display: flex;
    flex-direction: column;
    gap: 10px;
    background: #111;
    border-radius: 6px;
    padding: 10px;
    border: 1px solid #333;
}

.papr-sidebar h3 {
    margin: 0 0 6px 0;
    font-size: 12px;
    font-weight: 600;
    color: #7aa2f7;
    border-bottom: 1px solid #333;
    padding-bottom: 4px;
}

.papr-control-row {
    display: flex;
    align-items: center;
    gap: 6px;
    flex-wrap: wrap;
    font-size: 11px;
}

.papr-backoff-row {
    flex-wrap: nowrap;
}

.papr-backoff-row input[type="range"] {
    flex: 0 1 72px;
    min-width: 48px;
}

.papr-control-row label {
    min-width: 88px;
    color: #a0a0a0;
}

.papr-sidebar select {
    flex: 1;
    min-width: 0;
    padding: 4px 6px;
    font-size: 11px;
    font-family: inherit;
    background: #1a1a1a;
    color: #c0c0c0;
    border: 1px solid #444;
    border-radius: 4px;
    cursor: pointer;
}

.papr-sidebar select:hover,
.papr-sidebar select:focus {
    border-color: #7aa2f7;
    outline: none;
}

.papr-sidebar input[type="checkbox"] {
    cursor: pointer;
    accent-color: #7aa2f7;
}

.papr-sidebar input[type="range"] {
    flex: 1;
    min-width: 40px;
    max-width: 60px;
    height: 5px;
    background: #1a1a1a;
    border-radius: 2px;
    -webkit-appearance: none;
    appearance: none;
}

.papr-sidebar input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 12px;
    height: 12px;
    background: #7aa2f7;
    border-radius: 50%;
    cursor: pointer;
}

.papr-sidebar input[type="range"]::-moz-range-thumb {
    width: 12px;
    height: 12px;
    background: #7aa2f7;
    border-radius: 50%;
    cursor: pointer;
    border: none;
}

.papr-value {
    font-size: 11px;
    color: #9ece6a;
    min-width: 44px;
    text-align: left;
}

.papr-presets {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.papr-preset-btn {
    width: 100%;
    padding: 6px 8px;
    font-size: 11px;
    font-family: inherit;
    background: #1a1a1a;
    color: #c0c0c0;
    border: 1px solid #444;
    border-radius: 4px;
    cursor: pointer;
    text-align: left;
}

.papr-preset-btn:hover {
    background: #252525;
    border-color: #7aa2f7;
    color: #7aa2f7;
}

.papr-preset-btn.selected {
    background: #1e2a3a;
    border-color: #7aa2f7;
    color: #7aa2f7;
}

.papr-metrics {
    font-size: 10px;
    font-family: inherit;
    background: #1a1a1a;
    border-radius: 4px;
    padding: 8px;
    border: 1px solid #333;
    color: #a0a0a0;
    line-height: 1.6;
}

.papr-metrics span {
    color: #9ece6a;
}

.papr-main {
    grid-column: 2;
    display: flex;
    flex-direction: column;
    gap: 10px;
    min-width: 0;
}

.papr-metrics-bar {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
    padding: 8px 12px;
    background: #111;
    border-radius: 6px;
    border: 1px solid #333;
    font-size: 12px;
}

.papr-metrics-bar strong {
    color: #7aa2f7;
}

.papr-charts {
    display: grid;
    grid-template-columns: 1fr 1fr;
    grid-template-rows: 1fr 1fr auto;
    gap: 10px;
    min-height: 472px;
}

.papr-chart-ccdf {
    grid-column: 1 / -1;
}

.papr-chart-wrap {
    background: #111;
    border-radius: 6px;
    border: 1px solid #333;
    padding: 8px;
    position: relative;
    height: 202px;
    min-height: 202px;
}

.papr-chart-wrap canvas {
    display: block;
    width: 100%;
    max-width: 100%;
    min-height: 60px;
}

.papr-chart-title {
    font-size: 10px;
    color: #7aa2f7;
    margin-bottom: 4px;
    padding-bottom: 4px;
    border-bottom: 1px solid #333;
}

.papr-tooltip {
    font-size: 10px;
    color: #888;
    margin-top: 6px;
    font-style: italic;
}

@media (max-width: 700px) {
    .papr-container {
        grid-template-columns: 1fr;
        grid-template-rows: auto auto 1fr;
    }
    .papr-sidebar { grid-column: 1; grid-row: 1; }
    .papr-main { grid-column: 1; grid-row: 2 / -1; }
    .papr-charts {
        grid-template-columns: 1fr;
        grid-template-rows: repeat(5, auto);
    }
    .papr-chart-ccdf { grid-column: 1; }
}