/**
 * 5G NR PRACH Waveform Lab - Dark Engineering Dashboard
 * 3GPP TS 38.211 Section 5.3.2
 */

:root {
    --prach-bg: #0f172a;
    --prach-panel: #1e293b;
    --prach-accent: #38bdf8;
    --prach-cyan: #22d3ee;
    --prach-green: #10b981;
    --prach-orange: #f97316;
    --prach-text: #f8fafc;
    --prach-dim: #94a3b8;
    --prach-border: #334155;
}

.prach-sandbox {
    max-width: 1000px;
    margin: 20px auto;
    padding: 0;
    font-family: 'Inter', -apple-system, 'Segoe UI', sans-serif;
    background: var(--prach-bg);
    color: var(--prach-text);
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 4px 24px rgba(0, 0, 0, 0.4);
}

.prach-sandbox * {
    box-sizing: border-box;
}

.prach-sandbox .app-container {
    display: flex;
    min-height: 520px;
}

.prach-sandbox .sidebar {
    width: 320px;
    flex: 0 0 320px;
    background: var(--prach-panel);
    border-right: 1px solid var(--prach-border);
    padding: 16px;
    display: flex;
    flex-direction: column;
    gap: 16px;
    overflow-y: auto;
}

.prach-sandbox .sidebar h2 {
    margin: 0 0 8px 0;
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--prach-accent);
}

.prach-sandbox .param-group {
    margin-bottom: 8px;
    padding-bottom: 8px;
    border-bottom: 1px solid var(--prach-border);
    display: flex;
    flex-wrap: nowrap;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
}

.prach-sandbox .param-group:last-of-type {
    border-bottom: none;
}

.prach-sandbox .param-group-format {
    flex-wrap: wrap;
}

.prach-sandbox .param-group label {
    flex: 1 1 auto;
    min-width: 0;
    font-size: 0.7rem;
    color: var(--prach-dim);
    margin: 0;
    white-space: nowrap;
}

.prach-sandbox .param-group input,
.prach-sandbox .param-group select {
    flex: 0 0 95px;
    width: 95px;
    min-width: 0;
    background: var(--prach-bg);
    border: 1px solid var(--prach-border);
    color: var(--prach-text);
    padding: 4px 6px;
    border-radius: 4px;
    font-size: 0.8rem;
    margin-left: auto;
}

.prach-sandbox .param-group input:disabled,
.prach-sandbox .param-group select:disabled {
    opacity: 0.7;
    cursor: not-allowed;
}

.prach-sandbox .param-group #prach_format {
    flex: 0 0 143px;
    width: 143px;
}

.prach-sandbox .param-group input[type="number"] {
    flex: 0 0 104px;
    width: 104px;
    max-width: 104px;
}

.prach-sandbox .param-group .slider-row {
    display: flex;
    align-items: center;
    gap: 6px;
    flex: 0 0 115px;
    min-width: 0;
    margin-left: auto;
}

.prach-sandbox .param-group .slider-row input[type="range"] {
    flex: 1;
    min-width: 0;
}

.prach-sandbox .param-group .slider-val {
    flex-shrink: 0;
    font-size: 0.8rem;
    color: var(--prach-text);
    min-width: 1.8em;
    text-align: right;
}

.prach-sandbox .param-group .preamble-index-row {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 6px;
    margin-top: 4px;
    font-size: 0.85rem;
}

.prach-sandbox .param-group .preamble-index-row input[type="range"] {
    flex: 1;
    min-width: 60px;
}

.prach-sandbox .param-group#prach_restricted_section {
    margin-left: -40px;
}

.prach-sandbox .param-group#prach_restricted_section #prach_manual_du_row {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-top: 4px;
    flex-wrap: wrap;
}

.prach-sandbox .param-group#prach_restricted_section #prach_manual_du_row input[type="range"] {
    flex: 1;
    min-width: 60px;
}

.prach-sandbox .param-group .restricted-params {
    font-size: 0.75rem;
    margin-top: 2px;
}

.prach-sandbox .param-group .checkbox-row {
    display: flex;
    align-items: center;
    justify-content: flex-start;
    gap: 6px;
    margin-top: 6px;
    font-size: 0.9rem;
    flex-basis: 100%;
}

.prach-sandbox .param-group .checkbox-row input[type="checkbox"] {
    margin: 0;
    flex-shrink: 0;
}

.prach-sandbox .param-group input[type="range"] {
    padding: 2px 0;
}

.prach-sandbox .param-group input[type="range"]::-webkit-slider-runnable-track {
    height: 6px;
    border-radius: 3px;
    background: var(--prach-border);
}

.prach-sandbox .param-group input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 14px;
    height: 14px;
    border-radius: 50%;
    background: var(--prach-accent);
    margin-top: -4px;
    cursor: pointer;
}

.prach-sandbox .param-group input[type="range"]::-moz-range-track {
    height: 6px;
    border-radius: 3px;
    background: var(--prach-border);
}

.prach-sandbox .param-group input[type="range"]::-moz-range-thumb {
    width: 14px;
    height: 14px;
    border-radius: 50%;
    background: var(--prach-accent);
    cursor: pointer;
    border: none;
}

.prach-sandbox .viewer {
    flex: 1;
    padding: 16px;
    display: flex;
    flex-direction: column;
    gap: 12px;
    min-width: 0;
}

.prach-sandbox .chart-container {
    flex: 1 1 0;
    min-height: 160px;
    background: #020617;
    border-radius: 8px;
    padding: 10px;
    position: relative;
    overflow: hidden;
}

.prach-sandbox .chart-container canvas {
    width: 100% !important;
    height: 100% !important;
}

.prach-sandbox .math-debug {
    font-family: 'JetBrains Mono', 'Courier New', monospace;
    font-size: 0.8rem;
    color: var(--prach-green);
    padding: 10px;
    background: var(--prach-panel);
    border-radius: 6px;
    border: 1px solid var(--prach-border);
}

.prach-sandbox .math-debug span {
    font-weight: 600;
}

.prach-sandbox .param-group.param-group-hint {
    flex-wrap: wrap;
}

.prach-sandbox .param-group .param-hint {
    flex-basis: 100%;
    font-size: 0.65rem;
    color: var(--prach-dim);
    margin-top: 2px;
    padding-left: 0;
}

.prach-sandbox .param-group.invalid-root {
    border-left: 3px solid #f43f5e;
    padding-left: 8px;
}

.prach-sandbox .math-debug.invalid-config {
    background: rgba(244, 63, 94, 0.2);
    border-color: #f43f5e;
    color: #f43f5e;
    flex-shrink: 0;
    position: relative;
    z-index: 1;
}

.prach-sandbox #prach_subframe_warn,
.prach-sandbox #prach_ta_warn {
    flex-shrink: 0;
    margin-top: 4px;
}