/**
 * CRQC Readiness Benchmark Styles
 * Version: 4.0.3
 *
 * Table of Contents:
 * 1. CSS Custom Properties (Theme)
 * 2. Base Container
 * 3. Header & Introduction
 * 4. Scenarios Bar
 * 5. Mode Toggle
 * 6. Input Controls
 * 7. Results Panel
 * 8. Chart
 * 9. Tooltips
 * 10. Advanced Mode Panel
 * 11. Interdependency Matrix
 * 12. Explorer Section
 * 13. Responsive Breakpoints
 * 14. Accessibility & Focus States
 */

/* ==========================================================================
   1. CSS Custom Properties (Theme)
   ========================================================================== */

.crqc-benchmark {
    /* Light theme (default) - WCAG AA compliant contrast ratios */
    --crqc-bg: #ffffff;
    --crqc-text: #111111;
    --crqc-muted: #4a4a4a; /* Improved from #555555 for 4.5:1 ratio */
    --crqc-border: #d1d1d1; /* Improved from #e3e3e3 for better visibility */
    --crqc-panel-bg: #f9fafb;
    --crqc-panel-border: #c9c9c9; /* Improved from #e6e6e6 for better contrast */
    --crqc-accent: #1a4db8; /* Slightly darker for better contrast on white */
    --crqc-accent-light: #e8f0ff;
    --crqc-subtle: #f5f7fa;

    /* Category colors */
    --crqc-foundation: #2563eb;
    --crqc-core: #7c3aed;
    --crqc-execution: #ea580c;
    --crqc-enabler: #16a34a;

    /* Lever colors */
    --crqc-lqc: #3b82f6;
    --crqc-lob: #f97316;
    --crqc-qot: #8b5cf6;

    /* Status colors */
    --crqc-success: #22c55e;
    --crqc-warning: #f59e0b;
    --crqc-danger: #ef4444;

    /* Spacing */
    --crqc-spacing-xs: 4px;
    --crqc-spacing-sm: 8px;
    --crqc-spacing-md: 16px;
    --crqc-spacing-lg: 24px;

    /* Border radius */
    --crqc-radius-sm: 4px;
    --crqc-radius-md: 6px;
    --crqc-radius-lg: 8px;

    /* Transitions */
    --crqc-transition: 0.15s ease;
}

/* Dark theme - WCAG AA compliant */
.crqc-benchmark.crqc-dark {
    --crqc-bg: #0d0f12;
    --crqc-text: #f2f5fb;
    --crqc-muted: #a8b0be; /* Improved from #b9c0cd for better contrast on dark bg */
    --crqc-border: #2d3540;
    --crqc-panel-bg: #12161b;
    --crqc-panel-border: #2a3240;
    --crqc-accent: #8ab4ff; /* Brighter for better contrast on dark */
    --crqc-accent-light: #1e2f4d;
    --crqc-subtle: #151a21;
}

/* High Contrast Mode Support */
@media (forced-colors: active) {
    .crqc-benchmark {
        --crqc-accent: LinkText;
    }

    .crqc-benchmark button,
    .crqc-benchmark input,
    .crqc-benchmark select {
        border: 2px solid ButtonBorder;
    }

    .crqc-scenario.active,
    .crqc-mode-btn[aria-selected="true"] {
        background: Highlight;
        color: HighlightText;
    }

    .crqc-controls input[type="range"]::-webkit-slider-thumb {
        background: ButtonText;
        border: 2px solid ButtonBorder;
    }

    .crqc-controls input[type="range"]::-moz-range-thumb {
        background: ButtonText;
        border: 2px solid ButtonBorder;
    }
}

/* ==========================================================================
   2. Base Container
   ========================================================================== */

.crqc-benchmark {
    border: 1px solid var(--crqc-border);
    border-radius: var(--crqc-radius-lg);
    padding: var(--crqc-spacing-md);
    background: var(--crqc-bg);
    color: var(--crqc-text);
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen-Sans, Ubuntu, Cantarell, "Helvetica Neue", sans-serif;
    font-size: 15px;
    line-height: 1.5;
    max-width: 1000px;
    box-sizing: border-box;
}

.crqc-benchmark *,
.crqc-benchmark *::before,
.crqc-benchmark *::after {
    box-sizing: border-box;
}

/* Ensure hidden attribute works correctly */
.crqc-benchmark [hidden] {
    display: none !important;
}

/* Mode panels - Basic visible by default, Advanced hidden */
.crqc-basic-panel {
    display: block;
}

/* Advanced panel hidden by default until JS shows it */
.crqc-adv-panel {
    display: none;
}

/* When Advanced mode is active, show advanced panel */
.crqc-benchmark.crqc-mode-advanced-on .crqc-adv-panel {
    display: block;
}

/* When Advanced mode is active, hide basic panel */
.crqc-benchmark.crqc-mode-advanced-on .crqc-basic-panel {
    display: none;
}

/* Hidden attribute overrides (backup) */
.crqc-basic-panel[hidden],
.crqc-adv-panel[hidden] {
    display: none !important;
}

/* ==========================================================================
   3. Header & Introduction
   ========================================================================== */

.crqc-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--crqc-spacing-sm);
    margin-bottom: var(--crqc-spacing-sm);
}

.crqc-header h3 {
    margin: 0;
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--crqc-text);
}

.crqc-theme-toggle {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    border: 1px solid var(--crqc-panel-border);
    background: var(--crqc-panel-bg);
    color: var(--crqc-text);
    border-radius: 50%;
    cursor: pointer;
    transition: background var(--crqc-transition), border-color var(--crqc-transition);
}

.crqc-theme-toggle:hover {
    background: var(--crqc-accent-light);
    border-color: var(--crqc-accent);
}

.crqc-theme-icon::before {
    content: "\1F319"; /* Moon emoji */
    font-size: 16px;
}

.crqc-dark .crqc-theme-icon::before {
    content: "\2600\FE0F"; /* Sun emoji */
}

.crqc-intro {
    color: var(--crqc-muted);
    margin: var(--crqc-spacing-sm) 0 var(--crqc-spacing-md);
    font-size: 0.95rem;
}

.crqc-intro a {
    color: var(--crqc-accent);
    text-decoration: underline;
}

.crqc-intro a:hover {
    text-decoration: none;
}

/* ==========================================================================
   4. Scenarios Bar
   ========================================================================== */

.crqc-scenarios {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: var(--crqc-spacing-sm);
    margin-bottom: var(--crqc-spacing-md);
    padding: var(--crqc-spacing-sm) var(--crqc-spacing-md);
    background: var(--crqc-subtle);
    border: 1px solid var(--crqc-panel-border);
    border-radius: var(--crqc-radius-md);
}

.crqc-scenarios-label {
    font-weight: 600;
    color: var(--crqc-text);
}

.crqc-scenario {
    border: 1px solid var(--crqc-panel-border);
    background: var(--crqc-bg);
    color: var(--crqc-text);
    padding: 6px 12px;
    border-radius: var(--crqc-radius-md);
    cursor: pointer;
    font-size: 0.9rem;
    transition: background var(--crqc-transition), border-color var(--crqc-transition);
}

.crqc-scenario:hover {
    background: var(--crqc-accent-light);
    border-color: var(--crqc-accent);
}

.crqc-scenario.active {
    background: var(--crqc-accent);
    color: #fff;
    border-color: var(--crqc-accent);
}

.crqc-scenarios-help {
    color: var(--crqc-muted);
    font-size: 0.85rem;
    margin-left: var(--crqc-spacing-sm);
}

/* ==========================================================================
   5. Mode Toggle
   ========================================================================== */

.crqc-mode {
    display: flex;
    align-items: center;
    gap: var(--crqc-spacing-sm);
    margin-bottom: var(--crqc-spacing-md);
}

.crqc-mode-btn {
    border: 1px solid var(--crqc-panel-border);
    background: var(--crqc-bg);
    color: var(--crqc-text);
    padding: 8px 16px;
    border-radius: var(--crqc-radius-md);
    cursor: pointer;
    font-size: 0.95rem;
    font-weight: 500;
    transition: background var(--crqc-transition), color var(--crqc-transition), border-color var(--crqc-transition);
}

.crqc-mode-btn:hover {
    background: var(--crqc-accent-light);
}

.crqc-mode-btn[aria-selected="true"],
.crqc-mode-btn.crqc-mode-active {
    background: var(--crqc-accent);
    color: #fff;
    border-color: var(--crqc-accent);
}

.crqc-mode-help {
    color: var(--crqc-muted);
    font-size: 0.85rem;
    margin-left: var(--crqc-spacing-sm);
}

/* ==========================================================================
   6. Input Controls
   ========================================================================== */

.crqc-grid {
    display: grid;
    grid-template-columns: 1.2fr 0.8fr;
    gap: var(--crqc-spacing-md);
}

.crqc-inputs {
    display: flex;
    flex-direction: column;
    gap: var(--crqc-spacing-md);
}

.crqc-field {
    display: flex;
    flex-direction: column;
    gap: var(--crqc-spacing-xs);
}

.crqc-field label {
    display: flex;
    align-items: center;
    gap: var(--crqc-spacing-sm);
    font-weight: 600;
    color: var(--crqc-text);
}

.crqc-controls {
    display: grid;
    gap: var(--crqc-spacing-sm);
    align-items: center;
}

.crqc-controls-lqc {
    grid-template-columns: 1fr 140px;
}

.crqc-controls-exp {
    grid-template-columns: auto 1fr auto 140px;
}

.crqc-controls-single {
    grid-template-columns: 140px;
}

.crqc-exp-label {
    font-size: 0.85rem;
    color: var(--crqc-muted);
    white-space: nowrap;
}

.crqc-controls input[type="number"],
.crqc-controls input[type="text"] {
    width: 100%;
    padding: 8px 10px;
    color: var(--crqc-text);
    background: var(--crqc-bg);
    border: 1px solid var(--crqc-panel-border);
    border-radius: var(--crqc-radius-md);
    font-size: 0.95rem;
    transition: border-color var(--crqc-transition);
}

.crqc-controls input[type="number"]:focus,
.crqc-controls input[type="text"]:focus {
    outline: none;
    border-color: var(--crqc-accent);
    box-shadow: 0 0 0 2px var(--crqc-accent-light);
}

.crqc-controls input[type="range"] {
    width: 100%;
    height: 6px;
    -webkit-appearance: none;
    appearance: none;
    background: var(--crqc-panel-border);
    border-radius: 3px;
    cursor: pointer;
}

.crqc-controls input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 18px;
    height: 18px;
    background: var(--crqc-accent);
    border-radius: 50%;
    cursor: pointer;
    transition: transform var(--crqc-transition);
}

.crqc-controls input[type="range"]::-webkit-slider-thumb:hover {
    transform: scale(1.15);
}

.crqc-controls input[type="range"]::-moz-range-thumb {
    width: 18px;
    height: 18px;
    background: var(--crqc-accent);
    border: none;
    border-radius: 50%;
    cursor: pointer;
}

.crqc-exp-badge {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 28px;
    height: 28px;
    padding: 0 8px;
    border-radius: var(--crqc-radius-md);
    border: 1px solid var(--crqc-panel-border);
    background: var(--crqc-panel-bg);
    color: var(--crqc-text);
    font-size: 0.9rem;
    font-weight: 600;
}

.crqc-hint {
    color: var(--crqc-muted);
    font-size: 0.85rem;
}

.crqc-info {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 22px;
    height: 22px;
    border: none;
    background: var(--crqc-accent-light);
    color: var(--crqc-accent);
    border-radius: 50%;
    cursor: pointer;
    font-weight: 700;
    font-size: 0.85rem;
    transition: background var(--crqc-transition);
}

.crqc-info:hover {
    background: var(--crqc-accent);
    color: #fff;
}

.crqc-info-small {
    width: 18px;
    height: 18px;
    font-size: 0.75rem;
}

/* Formula Details */
.crqc-formula-details {
    margin-top: var(--crqc-spacing-sm);
}

.crqc-formula-details > summary {
    display: inline-flex;
    align-items: center;
    gap: var(--crqc-spacing-sm);
    cursor: pointer;
    font-weight: 600;
    color: var(--crqc-text);
    list-style: none;
}

.crqc-formula-details > summary::-webkit-details-marker {
    display: none;
}

.crqc-formula-details > summary::after {
    content: "\25B8"; /* Right-pointing triangle */
    display: inline-block;
    transition: transform var(--crqc-transition);
}

.crqc-formula-details[open] > summary::after {
    transform: rotate(90deg);
}

.crqc-formula-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--crqc-spacing-sm);
    margin-top: var(--crqc-spacing-sm);
    padding: var(--crqc-spacing-sm);
    background: var(--crqc-subtle);
    border-radius: var(--crqc-radius-md);
}

/* Locked state for Advanced mode */
.crqc-mode-advanced-on .crqc-inputs {
    pointer-events: none;
    opacity: 0.6;
}

.crqc-mode-advanced-on .crqc-inputs .crqc-field label::after {
    content: " (computed)";
    font-weight: 400;
    color: var(--crqc-muted);
    font-size: 0.85em;
}

/* ==========================================================================
   7. Results Panel
   ========================================================================== */

.crqc-results {
    display: flex;
    flex-direction: column;
    gap: var(--crqc-spacing-md);
    padding-left: var(--crqc-spacing-md);
    border-left: 1px dashed var(--crqc-panel-border);
}

.crqc-score-box,
.crqc-qday-box {
    background: var(--crqc-panel-bg);
    border: 1px solid var(--crqc-panel-border);
    border-radius: var(--crqc-radius-lg);
    padding: var(--crqc-spacing-md);
}

.crqc-score-label,
.crqc-qday-label {
    color: var(--crqc-text);
    font-weight: 600;
    font-size: 0.95rem;
    margin-bottom: var(--crqc-spacing-xs);
}

.crqc-score-value {
    font-size: 2.25rem;
    font-weight: 800;
    color: var(--crqc-text);
    line-height: 1.2;
}

.crqc-score-value.crqc-score-threshold {
    color: var(--crqc-success);
}

.crqc-qday-value {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--crqc-text);
    line-height: 1.2;
}

.crqc-qday-delta {
    display: block;
    font-size: 0.9rem;
    font-weight: 400;
    color: var(--crqc-muted);
    margin-top: var(--crqc-spacing-xs);
}

/* ==========================================================================
   8. Chart
   ========================================================================== */

.crqc-chart {
    margin-top: var(--crqc-spacing-sm);
}

.crqc-chart-title {
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--crqc-text);
    margin-bottom: var(--crqc-spacing-sm);
}

.crqc-chart-svg {
    width: 100%;
    height: auto;
    min-height: 180px;
    display: block;
    background: var(--crqc-bg);
    border: 1px solid var(--crqc-panel-border);
    border-radius: var(--crqc-radius-md);
}

/* Chart SVG elements use currentColor */
.crqc-chart-svg text {
    fill: var(--crqc-muted);
    font-size: 11px;
}

.crqc-chart-svg .chart-axis {
    stroke: var(--crqc-panel-border);
}

.crqc-chart-svg .chart-threshold {
    stroke: var(--crqc-muted);
    stroke-dasharray: 4, 4;
}

.crqc-chart-svg .chart-line {
    stroke: var(--crqc-accent);
    fill: none;
    stroke-width: 2;
}

.crqc-chart-svg .chart-dot {
    fill: var(--crqc-accent);
}

.crqc-chart-svg .chart-label {
    fill: var(--crqc-text);
    font-size: 11px;
    font-weight: 600;
}

/* ==========================================================================
   9. Tooltips (Popover)
   ========================================================================== */

.crqc-tooltips {
    display: none;
}

.crqc-popover {
    position: absolute;
    z-index: 100000;
    width: min(420px, 92vw);
    max-height: 60vh;
    overflow: auto;
    background: var(--crqc-bg, #fff);
    color: var(--crqc-text, #111);
    border: 1px solid var(--crqc-panel-border, #e6e6e6);
    border-radius: var(--crqc-radius-lg, 8px);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.15);
    padding: var(--crqc-spacing-md, 16px);
}

.crqc-popover-close {
    position: absolute;
    top: 8px;
    right: 10px;
    border: none;
    background: transparent;
    font-size: 1.25rem;
    line-height: 1;
    cursor: pointer;
    color: var(--crqc-muted, #555);
    padding: 4px;
}

.crqc-popover-close:hover {
    color: var(--crqc-text, #111);
}

.crqc-popover-content {
    padding-right: 20px;
    line-height: 1.6;
}

/* ==========================================================================
   10. Advanced Mode Panel
   ========================================================================== */

.crqc-adv-panel {
    border: 1px dashed var(--crqc-panel-border);
    padding: var(--crqc-spacing-md);
    border-radius: var(--crqc-radius-lg);
    background: var(--crqc-subtle);
    margin-bottom: var(--crqc-spacing-md);
}

.crqc-adv-legend {
    display: flex;
    align-items: flex-start;
    gap: var(--crqc-spacing-sm);
    margin-bottom: var(--crqc-spacing-sm);
    color: var(--crqc-muted);
    font-size: 0.9rem;
}

.crqc-adv-doc {
    margin: var(--crqc-spacing-sm) 0 var(--crqc-spacing-md);
    color: var(--crqc-muted);
    font-size: 0.9rem;
}

.crqc-adv-doc a {
    color: var(--crqc-accent);
    text-decoration: underline;
}

.crqc-adv-layout {
    display: grid;
    grid-template-columns: 1fr 340px;
    gap: var(--crqc-spacing-lg);
    align-items: start;
}

/* Capability Sliders */
.crqc-adv-sliders {
    display: flex;
    flex-direction: column;
    gap: var(--crqc-spacing-md);
}

.crqc-adv-category {
    display: flex;
    flex-direction: column;
    gap: var(--crqc-spacing-sm);
}

.crqc-adv-category-label {
    display: flex;
    align-items: center;
    gap: var(--crqc-spacing-sm);
    font-weight: 600;
    font-size: 0.85rem;
    color: var(--crqc-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.crqc-cat-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
}

.crqc-cat-foundation { background: var(--crqc-foundation); }
.crqc-cat-core { background: var(--crqc-core); }
.crqc-cat-execution { background: var(--crqc-execution); }
.crqc-cat-enabler { background: var(--crqc-enabler); }

.crqc-adv-row {
    display: grid;
    grid-template-columns: 1fr auto 50px;
    gap: var(--crqc-spacing-sm);
    align-items: center;
    padding: var(--crqc-spacing-xs) 0;
}

.crqc-adv-row label {
    display: flex;
    align-items: center;
    gap: var(--crqc-spacing-sm);
    font-weight: 500;
    font-size: 0.9rem;
    min-width: 0;
}

.crqc-cap-name {
    flex: 1;
    min-width: 0;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.crqc-adv-badges {
    display: flex;
    gap: 4px;
    margin-left: auto;
    flex-shrink: 0;
}

.crqc-adv-badges em {
    font-style: normal;
    font-size: 10px;
    padding: 2px 6px;
    border-radius: 999px;
    font-weight: 600;
}

.crqc-badge-lqc {
    background: rgba(59, 130, 246, 0.15);
    color: var(--crqc-lqc);
    border: 1px solid var(--crqc-lqc);
}

.crqc-badge-lob {
    background: rgba(249, 115, 22, 0.15);
    color: var(--crqc-lob);
    border: 1px solid var(--crqc-lob);
}

.crqc-badge-qot {
    background: rgba(139, 92, 246, 0.15);
    color: var(--crqc-qot);
    border: 1px solid var(--crqc-qot);
}

.crqc-cap-slider {
    width: 100%;
    min-width: 100px;
}

.crqc-adv-val {
    text-align: right;
    font-size: 0.85rem;
    color: var(--crqc-muted);
    font-weight: 600;
    white-space: nowrap;
}

/* Presets */
.crqc-adv-presets {
    display: flex;
    flex-wrap: wrap;
    gap: var(--crqc-spacing-sm);
    margin-top: var(--crqc-spacing-sm);
    padding-top: var(--crqc-spacing-sm);
    border-top: 1px solid var(--crqc-panel-border);
}

.crqc-adv-preset,
.crqc-adv-reset {
    border: 1px solid var(--crqc-panel-border);
    background: var(--crqc-bg);
    color: var(--crqc-text);
    padding: 6px 12px;
    border-radius: var(--crqc-radius-md);
    cursor: pointer;
    font-size: 0.85rem;
    transition: background var(--crqc-transition);
}

.crqc-adv-preset:hover,
.crqc-adv-reset:hover {
    background: var(--crqc-accent-light);
}

.crqc-adv-note {
    margin-top: var(--crqc-spacing-sm);
    color: var(--crqc-muted);
    font-size: 0.85rem;
}

/* ==========================================================================
   11. Interdependency Matrix
   ========================================================================== */

.crqc-adv-influence {
    border: 1px solid var(--crqc-panel-border);
    border-radius: var(--crqc-radius-lg);
    padding: var(--crqc-spacing-md);
    background: var(--crqc-bg);
}

.crqc-inf-title {
    margin-bottom: var(--crqc-spacing-sm);
    color: var(--crqc-text);
}

.crqc-inf-title strong {
    font-weight: 600;
}

.crqc-inf-title small {
    color: var(--crqc-muted);
    font-size: 0.85rem;
}

.crqc-inf-grid {
    display: grid;
    grid-template-columns: 100px repeat(3, 1fr);
    gap: 6px 8px;
    align-items: center;
}

.crqc-inf-h {
    font-weight: 600;
    font-size: 0.85rem;
    color: var(--crqc-text);
    text-align: center;
}

.crqc-inf-h-lqc { color: var(--crqc-lqc); }
.crqc-inf-h-lob { color: var(--crqc-lob); }
.crqc-inf-h-qot { color: var(--crqc-qot); }

.crqc-inf-r {
    font-size: 0.85rem;
    color: var(--crqc-text);
    padding: 4px 0;
    transition: font-weight var(--crqc-transition);
}

.crqc-inf-c {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 4px 0;
}

.crqc-inf-dot {
    display: inline-block;
    width: 18px;
    height: 18px;
    border-radius: 50%;
    opacity: 0.6;
    transform: scale(var(--w, 0.3));
    transform-origin: center;
    transition: transform var(--crqc-transition), opacity var(--crqc-transition);
}

.crqc-inf-c-lqc .crqc-inf-dot { background: var(--crqc-lqc); }
.crqc-inf-c-lob .crqc-inf-dot { background: var(--crqc-lob); }
.crqc-inf-c-qot .crqc-inf-dot { background: var(--crqc-qot); }

/* Active row highlighting */
.crqc-inf-r.active,
.crqc-inf-c.active {
    font-weight: 600;
}

.crqc-inf-c.active .crqc-inf-dot {
    opacity: 1;
    box-shadow: 0 0 0 2px var(--crqc-bg), 0 0 0 4px currentColor;
}

.crqc-inf-note {
    margin-top: var(--crqc-spacing-sm);
    color: var(--crqc-muted);
    font-size: 0.8rem;
}

/* ==========================================================================
   12. Explorer Section
   ========================================================================== */

.crqc-adv-explorer-wrapper {
    display: none;
    margin-top: var(--crqc-spacing-md);
}

.crqc-mode-advanced-on .crqc-adv-explorer-wrapper {
    display: block;
}

.crqc-adv-explorer {
    border: 1px solid var(--crqc-panel-border);
    border-radius: var(--crqc-radius-lg);
    padding: var(--crqc-spacing-md);
    background: var(--crqc-bg);
}

.crqc-exp-title {
    margin-bottom: var(--crqc-spacing-md);
    color: var(--crqc-text);
}

.crqc-exp-title strong {
    font-weight: 600;
}

.crqc-exp-title small {
    color: var(--crqc-muted);
    font-size: 0.85rem;
}

/* Required Bars */
.crqc-req-bars {
    display: grid;
    gap: var(--crqc-spacing-sm);
    margin-bottom: var(--crqc-spacing-md);
}

.crqc-req-row {
    display: grid;
    grid-template-columns: 120px 1fr auto;
    gap: var(--crqc-spacing-sm);
    align-items: center;
}

.crqc-req-label {
    font-size: 0.85rem;
    color: var(--crqc-text);
}

.crqc-req-bar {
    position: relative;
    height: 12px;
    background: var(--crqc-panel-bg);
    border-radius: 6px;
    overflow: hidden;
}

.crqc-req-bar > span {
    position: absolute;
    top: 0;
    left: 0;
    bottom: 0;
    background: linear-gradient(90deg, var(--crqc-accent), var(--crqc-qot));
    border-radius: 6px;
    transition: width 0.2s ease;
}

.crqc-req-val {
    font-size: 0.8rem;
    color: var(--crqc-muted);
    white-space: nowrap;
}

.crqc-req-impossible {
    color: var(--crqc-danger);
    font-weight: 600;
}

/* Critical capability badge */
.crqc-critical-badge {
    color: var(--crqc-warning, #f59e0b);
    font-size: 0.75em;
    margin-left: 2px;
}

.crqc-req-critical .crqc-req-label {
    font-weight: 600;
}

/* Explorer Layout (bars + legend side by side) */
.crqc-explorer-layout {
    display: grid;
    grid-template-columns: 1fr 280px;
    gap: var(--crqc-spacing-md);
    align-items: start;
}

/* Impact Legend */
.crqc-impact-legend {
    background: var(--crqc-subtle);
    border: 1px solid var(--crqc-panel-border);
    border-radius: var(--crqc-radius-md);
    padding: var(--crqc-spacing-sm);
    font-size: 0.85rem;
}

.crqc-legend-title {
    font-weight: 600;
    margin-bottom: var(--crqc-spacing-xs);
    padding-bottom: var(--crqc-spacing-xs);
    border-bottom: 1px solid var(--crqc-panel-border);
}

.crqc-legend-list {
    list-style: none;
    margin: 0;
    padding: 0;
}

.crqc-legend-item {
    display: flex;
    align-items: flex-start;
    gap: 8px;
    padding: 6px 0;
    border-bottom: 1px solid var(--crqc-panel-border);
}

.crqc-legend-item:last-child {
    border-bottom: none;
}

.crqc-legend-dot {
    width: 12px;
    height: 12px;
    border-radius: 2px;
    flex-shrink: 0;
    margin-top: 3px;
}

.crqc-legend-blocking .crqc-legend-dot {
    background: linear-gradient(90deg, var(--crqc-danger, #ef4444), var(--crqc-warning, #f59e0b));
}

.crqc-legend-high .crqc-legend-dot {
    background: var(--crqc-danger, #ef4444);
}

.crqc-legend-medium .crqc-legend-dot {
    background: var(--crqc-warning, #f59e0b);
}

.crqc-legend-low .crqc-legend-dot {
    background: var(--crqc-muted);
}

.crqc-legend-saturated .crqc-legend-dot {
    background: var(--crqc-success, #22c55e);
}

.crqc-legend-text {
    flex: 1;
    line-height: 1.3;
}

.crqc-legend-text strong {
    display: block;
    font-size: 0.9em;
}

.crqc-legend-note {
    margin: var(--crqc-spacing-xs) 0 0;
    padding-top: var(--crqc-spacing-xs);
    border-top: 1px solid var(--crqc-panel-border);
    font-size: 0.8rem;
    color: var(--crqc-muted);
}

/* Responsive: stack legend below bars on narrow screens */
@media (max-width: 800px) {
    .crqc-explorer-layout {
        grid-template-columns: 1fr;
    }

    .crqc-impact-legend {
        order: -1;
        margin-bottom: var(--crqc-spacing-sm);
    }

    .crqc-legend-list {
        display: grid;
        grid-template-columns: repeat(2, 1fr);
        gap: 4px;
    }

    .crqc-legend-item {
        border-bottom: none;
        padding: 4px;
        background: var(--crqc-bg);
        border-radius: var(--crqc-radius-sm);
    }
}

@media (max-width: 500px) {
    .crqc-legend-list {
        grid-template-columns: 1fr;
    }
}

/* Pairwise Chart */
.crqc-pairwise {
    margin-top: var(--crqc-spacing-md);
    padding-top: var(--crqc-spacing-md);
    border-top: 1px solid var(--crqc-panel-border);
}

.crqc-pair-ctrls {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: var(--crqc-spacing-sm);
    margin-bottom: var(--crqc-spacing-sm);
}

.crqc-pair-ctrls label {
    font-weight: 500;
    color: var(--crqc-text);
    font-size: 0.9rem;
}

.crqc-pair-ctrls select {
    padding: 6px 10px;
    border: 1px solid var(--crqc-panel-border);
    border-radius: var(--crqc-radius-md);
    background: var(--crqc-bg);
    color: var(--crqc-text);
    font-size: 0.9rem;
}

.crqc-pair-plot {
    width: 100%;
    max-width: 500px;
    height: auto;
    background: var(--crqc-bg);
    border: 1px solid var(--crqc-panel-border);
    border-radius: var(--crqc-radius-md);
}

.crqc-pair-hint {
    display: block;
    margin-top: var(--crqc-spacing-sm);
    color: var(--crqc-muted);
    font-size: 0.8rem;
}

/* ==========================================================================
   13. Responsive Breakpoints
   ========================================================================== */

@media (max-width: 1000px) {
    .crqc-adv-layout {
        grid-template-columns: 1fr;
    }

    .crqc-adv-influence {
        order: -1;
    }
}

@media (max-width: 800px) {
    .crqc-grid {
        grid-template-columns: 1fr;
    }

    .crqc-results {
        border-left: none;
        padding-left: 0;
        border-top: 1px dashed var(--crqc-panel-border);
        padding-top: var(--crqc-spacing-md);
    }

    .crqc-scenarios {
        flex-direction: column;
        align-items: flex-start;
    }

    .crqc-scenarios-help {
        margin-left: 0;
        margin-top: var(--crqc-spacing-xs);
    }

    .crqc-mode-help {
        display: none;
    }
}

@media (max-width: 600px) {
    .crqc-benchmark {
        padding: var(--crqc-spacing-sm);
    }

    /* Improved touch targets - minimum 44x44px */
    .crqc-scenario,
    .crqc-mode-btn,
    .crqc-adv-preset,
    .crqc-adv-reset {
        min-height: 44px;
        min-width: 44px;
        padding: 10px 16px;
    }

    .crqc-info {
        width: 44px;
        height: 44px;
        font-size: 1rem;
    }

    .crqc-theme-toggle {
        width: 44px;
        height: 44px;
    }

    .crqc-controls-exp {
        grid-template-columns: 1fr auto;
        grid-template-rows: auto auto;
    }

    .crqc-controls-exp .crqc-exp-label {
        grid-column: 1 / -1;
    }

    .crqc-controls-exp input[type="range"] {
        grid-column: 1;
        height: 44px; /* Taller touch target for sliders */
    }

    .crqc-controls-exp .crqc-exp-badge {
        grid-column: 2;
        min-height: 36px;
        font-size: 1rem;
    }

    .crqc-controls-exp input[type="number"] {
        grid-column: 1 / -1;
        min-height: 44px;
        font-size: 16px; /* Prevent iOS zoom */
    }

    .crqc-controls input[type="number"],
    .crqc-controls input[type="text"] {
        min-height: 44px;
        font-size: 16px; /* Prevent iOS zoom */
        padding: 10px 12px;
    }

    .crqc-formula-grid {
        grid-template-columns: 1fr;
    }

    .crqc-adv-row {
        grid-template-columns: 1fr 60px;
        grid-template-rows: auto auto;
        padding: var(--crqc-spacing-sm) 0;
    }

    .crqc-adv-row label {
        grid-column: 1 / -1;
    }

    .crqc-adv-row .crqc-cap-slider {
        grid-column: 1;
        height: 44px;
    }

    .crqc-inf-grid {
        grid-template-columns: 80px repeat(3, 1fr);
        font-size: 0.8rem;
    }

    .crqc-req-row {
        grid-template-columns: 1fr;
        gap: 4px;
    }

    .crqc-req-row .crqc-req-bar {
        order: 1;
        height: 20px;
    }

    .crqc-req-row .crqc-req-val {
        order: 2;
    }

    /* Larger slider thumbs for touch */
    .crqc-controls input[type="range"]::-webkit-slider-thumb {
        width: 28px;
        height: 28px;
    }

    .crqc-controls input[type="range"]::-moz-range-thumb {
        width: 28px;
        height: 28px;
    }

    /* Header adjustments */
    .crqc-header h3 {
        font-size: 1.1rem;
    }

    /* Score display adjustments */
    .crqc-score-value {
        font-size: 1.75rem;
    }

    .crqc-qday-value {
        font-size: 1.5rem;
    }
}

/* ==========================================================================
   14. Accessibility & Focus States
   ========================================================================== */

/* Focus Styles */
.crqc-benchmark *:focus-visible {
    outline: 2px solid var(--crqc-accent);
    outline-offset: 2px;
}

.crqc-benchmark button:focus-visible,
.crqc-benchmark input:focus-visible,
.crqc-benchmark select:focus-visible {
    outline: 2px solid var(--crqc-accent);
    outline-offset: 2px;
}

/* Focus trap indicator for results section */
.crqc-results:focus {
    outline: 2px dashed var(--crqc-accent);
    outline-offset: 4px;
}

/* Enhanced button focus for better visibility */
.crqc-scenario:focus-visible,
.crqc-mode-btn:focus-visible,
.crqc-adv-preset:focus-visible,
.crqc-adv-reset:focus-visible {
    outline: 3px solid var(--crqc-accent);
    outline-offset: 2px;
    box-shadow: 0 0 0 4px var(--crqc-accent-light);
}

/* Screen reader only */
.crqc-sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
    .crqc-benchmark *,
    .crqc-benchmark *::before,
    .crqc-benchmark *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* Footnote */
.crqc-footnote {
    margin-top: var(--crqc-spacing-md);
    padding-top: var(--crqc-spacing-sm);
    border-top: 1px solid var(--crqc-panel-border);
    color: var(--crqc-muted);
    font-size: 0.85rem;
}

/* ==========================================================================
   15. Loading States & Performance
   ========================================================================== */

/* Loading state for widget initialization */
.crqc-benchmark.crqc-loading {
    position: relative;
    pointer-events: none;
}

.crqc-benchmark.crqc-loading::after {
    content: "";
    position: absolute;
    inset: 0;
    background: var(--crqc-bg);
    opacity: 0.85;
    z-index: 1000;
}

.crqc-benchmark.crqc-loading::before {
    content: "";
    position: absolute;
    top: 50%;
    left: 50%;
    width: 32px;
    height: 32px;
    margin: -16px 0 0 -16px;
    border: 3px solid var(--crqc-panel-border);
    border-top-color: var(--crqc-accent);
    border-radius: 50%;
    z-index: 1001;
    animation: crqc-spin 0.8s linear infinite;
}

@keyframes crqc-spin {
    to {
        transform: rotate(360deg);
    }
}

/* GPU acceleration for animated elements */
.crqc-controls input[type="range"]::-webkit-slider-thumb,
.crqc-node,
.crqc-edge-path,
.crqc-popover {
    will-change: transform;
}

/* Prevent layout shift during load */
.crqc-chart-svg {
    contain: layout size;
}

.crqc-score-value,
.crqc-qday-value {
    min-height: 2.5em;
    contain: layout;
}

/* Print styles */
@media print {
    .crqc-benchmark {
        border: 1px solid #000;
        background: #fff !important;
        color: #000 !important;
    }

    .crqc-theme-toggle {
        display: none !important;
    }

    .crqc-adv-panel[hidden] {
        display: none !important;
    }

    .crqc-controls input[type="range"] {
        appearance: auto;
    }
}