/* ==========================================================================
   samples/bench/styles.css
   Clean, modern, framework-free.
   Palette: dark slate + lime accent, suitable for long benchmark sessions.
   ========================================================================== */

:root {
    --bg:           #0f1419;
    --bg-card:      #161b22;
    --bg-card-2:    #1c232c;
    --bg-card-3:    #191d23;
    --border:       #2a323d;
    --border-soft:  #1f2630;
    --text:         #e6edf3;
    --text-dim:     #8b95a4;
    --text-muted:   #5c6675;
    --accent:       #a3e635;     /* lime-400 */
    --accent-2:     #4ade80;     /* green-400 */
    --warn:         #fbbf24;
    --error:        #f87171;
    --row-alt:      #19202a;
    --row-hover:    #232c38;
    --bar:          linear-gradient(90deg, #4ade80 0%, #a3e635 100%);
    --bar-bg:       #1a212b;
    --bar-int:      #38bdf8;     /* sky-400 for the int reference baseline */
    --bar-int16:    #22d3ee;     /* cyan-400 for int16 - sibling shade of int */
    --bar-float:    #c084fc;     /* purple-400 for float */
    --bar-wasm:     #a3e635;     /* lime-400 for WASM */
    --bar-simd:     #4ade80;     /* green-400 for SIMD */
    --bar-int16ws:  #2dd4bf;     /* teal-400 for int16-wasm-scalar (int16 family + wasm hue) */
    --bar-int16wsi: #14b8a6;     /* teal-500 for int16-wasm-simd  (int16 family + simd hue) */
    --bar-lcms:     #fb7185;     /* rose-400 for lcms */
    --bar-nolut:    #fb923c;     /* orange-400 for the accuracy (no-LUT) path */
    --shadow:       0 1px 3px rgba(0,0,0,0.3), 0 4px 12px rgba(0,0,0,0.15);

    --mono: ui-monospace, 'SF Mono', Menlo, Consolas, 'Liberation Mono', monospace;
    --sans: ui-sans-serif, system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;
}

* { box-sizing: border-box; }

html, body {
    margin: 0;
    padding: 0;
    background: var(--bg);
    color: var(--text);
    font-family: var(--sans);
    font-size: 14px;
    line-height: 1.5;
}

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

code {
    font-family: var(--mono);
    font-size: 0.9em;
    color: var(--text);
    background: var(--bg-card-2);
    padding: 0.1em 0.4em;
    border-radius: 3px;
    border: 1px solid var(--border-soft);
}

main {
    max-width: 1240px;
    margin: 0 auto;
    padding: 0 24px 48px;
}

/* ============================================================ TOPBAR + TABS */

.topbar {
    background: var(--bg-card);
    border-bottom: 1px solid var(--border);
    padding: 14px 24px 0;
    margin-bottom: 24px;
    position: sticky;
    top: 0;
    z-index: 10;
    box-shadow: var(--shadow);
}

.topbar-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 12px 16px;
    margin-bottom: 12px;
}
.topbar-head .brand {
    margin-bottom: 0;
}
.topbar-head .nav {
    margin-left: auto;
    flex-wrap: wrap;
    justify-content: flex-end;
}

.brand {
    display: flex;
    align-items: baseline;
    gap: 12px;
    margin-bottom: 12px;
}
.brand-mark {
    font-weight: 700;
    font-size: 18px;
    color: var(--accent);
    letter-spacing: -0.01em;
}
.brand-tag {
    color: var(--text-dim);
    font-size: 13px;
    font-weight: 400;
}

.nav {
    display: flex;
    gap: 4px;
    margin-left: -8px;
}
.nav a {
    background: transparent;
    color: var(--text-dim);
    padding: 10px 16px;
    font-size: 13px;
    border-bottom: 2px solid transparent;
    transition: color 0.12s ease, border-color 0.12s ease;
    border-radius: 4px 4px 0 0;
    text-decoration: none;
}
.nav a:hover { color: var(--text); text-decoration: none; }
.nav a.is-active {
    color: var(--accent);
    border-bottom-color: var(--accent);
}

.tabs {
    display: flex;
    gap: 4px;
    margin-left: -8px; /* visual alignment */
}
.tab {
    background: transparent;
    color: var(--text-dim);
    border: none;
    padding: 10px 16px;
    font: inherit;
    font-size: 13px;
    border-bottom: 2px solid transparent;
    cursor: pointer;
    transition: color 0.12s ease, border-color 0.12s ease;
    border-radius: 4px 4px 0 0;
}
.tab:hover { color: var(--text); }
.tab.is-active {
    color: var(--accent);
    border-bottom-color: var(--accent);
}

/* ============================================================ CARD / PANEL  */

.card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 20px 24px;
    margin-bottom: 18px;
    box-shadow: var(--shadow);
}

.card h2 {
    margin: 0 0 4px;
    font-size: 17px;
    font-weight: 600;
    color: var(--text);
    letter-spacing: -0.005em;
}
.card h3 {
    margin: 18px 0 8px;
    font-size: 14px;
    font-weight: 600;
    color: var(--text);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.lead {
    color: var(--text-dim);
    margin: 8px 0 16px;
    max-width: 90ch;
}

.muted { color: var(--text-muted); font-size: 12px; }

.test-panel { display: block; }
.test-panel[hidden] { display: none; }

/* ============================================================ INFO PANEL    */

.info-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1px;
    background: var(--border-soft);
    border: 1px solid var(--border-soft);
    border-radius: 6px;
    overflow: hidden;
    margin-top: 8px;
}
.info-cell {
    background: var(--bg-card-2);
    padding: 10px 14px;
    display: flex;
    flex-direction: column;
    gap: 2px;
    min-height: 50px;
}

.info-cell:hover {
    background: var(--bg-card-3);
}

.info-cell .lbl {
    color: var(--text-muted);
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: 0.06em;
}
.info-cell .val {
    color: var(--text);
    font-family: var(--mono);
    font-size: 13px;
    word-break: break-word;
}
.info-cell .val.is-ok    { color: var(--accent-2); }
.info-cell .val.is-warn  { color: var(--warn); }
.info-cell .val.is-error { color: var(--error); }

/* ============================================================ CONTROLS BAR  */

.controls {
    display: flex;
    flex-wrap: wrap;
    gap: 10px 14px;
    align-items: flex-end;
    padding: 14px 16px;
    background: var(--bg-card-2);
    border: 1px solid var(--border-soft);
    border-radius: 6px;
    margin: 12px 0;
}

.controls label {
    display: flex;
    flex-direction: column;
    gap: 4px;
    font-size: 11px;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.06em;
}
.controls label.check {
    flex-direction: row;
    align-items: center;
    gap: 6px;
    text-transform: none;
    letter-spacing: 0;
    font-size: 13px;
    color: var(--text-dim);
    padding-bottom: 8px;
}

.controls select,
.controls input[type=number] {
    background: var(--bg);
    color: var(--text);
    border: 1px solid var(--border);
    padding: 6px 10px;
    border-radius: 4px;
    font: inherit;
    font-size: 13px;
    min-width: 130px;
    text-transform: none;
    letter-spacing: 0;
}
.controls select:focus,
.controls input[type=number]:focus {
    outline: none;
    border-color: var(--accent);
}

button {
    background: transparent;
    color: var(--text);
    border: 1px solid var(--border);
    padding: 7px 16px;
    font: inherit;
    font-size: 13px;
    font-weight: 500;
    border-radius: 4px;
    cursor: pointer;
    transition: background 0.12s ease, border-color 0.12s ease;
}
button:disabled {
    opacity: 0.4;
    cursor: not-allowed;
}
button:not(:disabled):hover { border-color: var(--accent); }

.btn-primary {
    background: var(--accent);
    color: #0a0e12;
    border-color: var(--accent);
    font-weight: 600;
}
.btn-primary:not(:disabled):hover {
    background: var(--accent-2);
    border-color: var(--accent-2);
}

.btn-secondary {
    color: var(--text-dim);
}

/* ============================================================ PROGRESS BAR  */

.progress {
    height: 6px;
    background: var(--bg-card-2);
    border-radius: 3px;
    overflow: hidden;
    position: relative;
    margin: 12px 0 6px;
}
.progress-bar {
    height: 100%;
    width: 0;
    background: var(--bar);
    transition: width 0.15s ease;
}
.progress-text {
    color: var(--text-muted);
    font-size: 11px;
    font-family: var(--mono);
    text-transform: none;
    letter-spacing: 0;
    margin-bottom: 12px;
    min-height: 14px;
}
.progress-text.is-busy { color: var(--accent); }
.progress-text.is-done { color: var(--accent-2); }
.progress-text.is-error { color: var(--error); }

/* ============================================================ RESULTS TABLE */

.results-wrap {
    overflow-x: auto;
    border: 1px solid var(--border-soft);
    border-radius: 6px;
    background: var(--bg-card-2);
}

table.results {
    width: 100%;
    border-collapse: collapse;
    font-size: 13px;
}

table.results th,
table.results td {
    padding: 8px 14px;
    text-align: left;
    border-bottom: 1px solid var(--border-soft);
    white-space: nowrap;
}
table.results th {
    background: var(--bg-card);
    color: var(--text-muted);
    font-weight: 600;
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    position: sticky;
    top: 0;
    z-index: 1;
}
table.results td.num { text-align: right; font-family: var(--mono); }
table.results th.num { text-align: right; }
table.results th.type-col,
table.results td.type-cell {
    text-align: center;
    font-family: var(--mono);
    font-size: 12px;
    font-weight: 600;
    width: 2.75em;
    white-space: nowrap;
}
table.results td.type-cell-na {
    color: var(--text-dim);
    font-weight: 400;
}
table.results td.bar-col,
table.results th.bar-col { width: 200px; min-width: 180px; }

table.results tbody tr:nth-child(even) { background: var(--row-alt); }
table.results tbody tr:hover           { background: var(--row-hover); }

table.results tbody tr.dir-sep td { border-top: 2px solid var(--border); }

/* the "best in this direction" highlight */
table.results td.is-best { color: var(--accent); font-weight: 600; }

/* relative-speed bar in MPx column */
.bar {
    height: 14px;
    background: var(--bar-bg);
    border-radius: 2px;
    overflow: hidden;
    position: relative;
}
.bar-fill {
    height: 100%;
    border-radius: 2px;
    transition: width 0.2s ease;
}
.bar-fill.b-float    { background: var(--bar-float); }
.bar-fill.b-int      { background: var(--bar-int); }
.bar-fill.b-int16    { background: var(--bar-int16); }
.bar-fill.b-wasm     { background: var(--bar-wasm); }
.bar-fill.b-simd     { background: var(--bar-simd); }
.bar-fill.b-int16ws  { background: var(--bar-int16ws); }
.bar-fill.b-int16wsi { background: var(--bar-int16wsi); }
.bar-fill.b-lcms     { background: var(--bar-lcms); }
.bar-fill.b-nolut    { background: var(--bar-nolut); }

.mode-badge {
    display: inline-block;
    padding: 2px 8px;
    border-radius: 3px;
    font-family: var(--mono);
    font-size: 11px;
    background: var(--bg);
    border: 1px solid var(--border);
}
/* mode badge: also reused in summary cards for consistent colour mapping */
.mode-badge.b-float    { color: var(--bar-float);    border-color: var(--bar-float); }
.mode-badge.b-int      { color: var(--bar-int);      border-color: var(--bar-int); }
.mode-badge.b-int16    { color: var(--bar-int16);    border-color: var(--bar-int16); }
.mode-badge.b-wasm     { color: var(--bar-wasm);     border-color: var(--bar-wasm); }
.mode-badge.b-simd     { color: var(--bar-simd);     border-color: var(--bar-simd); }
.mode-badge.b-int16ws  { color: var(--bar-int16ws);  border-color: var(--bar-int16ws); }
.mode-badge.b-int16wsi { color: var(--bar-int16wsi); border-color: var(--bar-int16wsi); }
.mode-badge.b-lcms     { color: var(--bar-lcms);     border-color: var(--bar-lcms); }
.mode-badge.b-nolut    { color: var(--bar-nolut);    border-color: var(--bar-nolut); }

td.mode-cell.demoted .mode-badge::after {
    content: ' \2192 demoted';
    color: var(--warn);
    font-style: italic;
}

td.error-cell { color: var(--error); font-style: italic; }

/* LUT-description cell: e.g. "33x33x33 u16" or "no LUT (f64 pipeline)". */
table.results td.lut-cell {
    font-family: var(--mono);
    font-size: 11px;
    color: var(--text-dim);
    letter-spacing: 0.02em;
}

/* ============================================================ SUMMARY CARDS */
/* Best-of-run cards at the top of the Full-comparison panel. 2x2 grid on
   wide viewports, 1-col stack on narrow ones. */

.summary-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 12px;
    margin: 12px 0 20px;
}

.summary-card {
    background: var(--bg-card-2);
    border: 1px solid var(--border-soft);
    border-radius: 6px;
    padding: 14px 16px;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.summary-card-head {
    display: flex;
    flex-direction: column;
    gap: 4px;
}
.summary-card-head .mode-badge {
    align-self: flex-start;
    font-size: 12px;
    padding: 3px 10px;
}
.summary-card-head .summary-sub {
    color: var(--text-muted);
    font-size: 11px;
    font-family: var(--mono);
    letter-spacing: 0.03em;
}

.summary-peak {
    color: var(--accent);
    font-size: 12px;
    font-family: var(--mono);
    padding: 4px 0 2px;
    border-bottom: 1px solid var(--border-soft);
}
.summary-peak.muted { color: var(--text-muted); }

/* BIG headline range: worst - best MPx/s across the 4 directions. */
.summary-range {
    display: flex;
    align-items: baseline;
    gap: 8px;
    padding: 2px 0 8px;
    border-bottom: 1px solid var(--border-soft);
    font-family: var(--mono);
    color: var(--accent);
    line-height: 1.1;
}
.summary-range .summary-range-lo,
.summary-range .summary-range-hi {
    font-size: 34px;
    font-weight: 700;
    letter-spacing: -0.02em;
}
.summary-range .summary-range-lo { color: var(--text-dim); }
.summary-range .summary-range-hi { color: var(--accent); }
.summary-range .summary-range-sep {
    font-size: 22px;
    color: var(--text-muted);
    font-weight: 300;
}
.summary-range .summary-range-unit {
    font-size: 12px;
    color: var(--text-muted);
    margin-left: auto;
    text-transform: uppercase;
    letter-spacing: 0.08em;
}
.summary-range.muted .summary-range-hi { color: var(--text-muted); }

table.summary-body {
    width: 100%;
    border-collapse: collapse;
    font-size: 12px;
}
table.summary-body td {
    padding: 4px 0;
    border: none;
    color: var(--text-dim);
    white-space: nowrap;
}
table.summary-body td:first-child { color: var(--text); font-size: 12px; }
table.summary-body td.scr-mode     { color: var(--text-muted); font-family: var(--mono); font-size: 11px; padding-left: 10px; overflow: hidden; text-overflow: ellipsis; max-width: 160px; }
table.summary-body td.scr-mpx      { text-align: right; font-family: var(--mono); color: var(--accent-2); font-weight: 600; }
table.summary-body tr:hover        { background: transparent; }

/* ============================================================ ACCURACY BLOCK */
/* Each kernel (RGB matrix / CMYK 4D tetra) gets one block with its own
   header, four headline cards, and a detail table. Blocks are stacked on
   the page and separated by a top border for visual rhythm. */

.accuracy-result-block {
    margin: 18px 0 8px;
    padding-top: 14px;
    border-top: 1px solid var(--border-soft);
}
.accuracy-result-block:first-of-type {
    border-top: none;
    padding-top: 0;
}
.accuracy-block-head {
    display: flex;
    align-items: center;
    gap: 14px;
    margin: 0 0 6px;
    text-transform: none;
    letter-spacing: 0;
    font-size: 13px;
    font-weight: 500;
}
.accuracy-block-subhead {
    color: var(--text-muted);
    font-family: var(--mono);
    font-size: 11px;
    font-weight: 400;
}
.kernel-badge {
    display: inline-block;
    padding: 3px 10px;
    border-radius: 3px;
    font-family: var(--mono);
    font-size: 12px;
    background: var(--bg);
    border: 1px solid var(--border);
}
.kernel-badge.k-matrix  { color: var(--bar-float); border-color: var(--bar-float); }
.kernel-badge.k-tetra4d { color: var(--bar-simd);  border-color: var(--bar-simd); }

/* ============================================================ ACCURACY HEADLINE */
/* Big-number row shown above the results table on the Accuracy sweep tab. */

.accuracy-headline {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 10px;
    margin: 14px 0 16px;
}
.ah-card {
    background: var(--bg-card-2);
    border: 1px solid var(--border-soft);
    border-radius: 6px;
    padding: 14px 18px;
    display: flex;
    flex-direction: column;
    gap: 4px;
}
.ah-lbl {
    font-size: 11px;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.08em;
}
.ah-val {
    font-size: 32px;
    font-weight: 700;
    color: var(--accent);
    font-family: var(--mono);
    letter-spacing: -0.02em;
    line-height: 1.05;
}
.ah-sub {
    font-size: 11px;
    color: var(--text-dim);
    font-family: var(--mono);
}

/* ============================================================ CHART AREA    */

.chart-wrap {
    margin-top: 12px;
    background: var(--bg-card-2);
    border: 1px solid var(--border-soft);
    border-radius: 6px;
    padding: 12px;
}
.chart-wrap canvas {
    display: block;
    width: 100%;
    height: auto;
    background: var(--bg-card-2);
}
.legend {
    margin-top: 10px;
    display: flex;
    gap: 18px;
    flex-wrap: wrap;
    font-family: var(--mono);
    font-size: 12px;
    color: var(--text-dim);
}
.legend-item {
    display: flex;
    align-items: center;
    gap: 6px;
}
.legend-swatch {
    width: 14px;
    height: 6px;
    border-radius: 2px;
}

/* ============================================================ ABOUT PANEL   */

.explain {
    color: var(--text-dim);
    line-height: 1.65;
    max-width: 90ch;
    padding-left: 22px;
}
.explain li { margin-bottom: 8px; }
.explain strong { color: var(--text); font-weight: 600; }

/* Compact reference table inside the About panel (e.g. lcms grid rule) */
table.explain-grid {
    border-collapse: collapse;
    margin: 8px 0 12px;
    font-size: 12px;
    font-family: var(--mono);
    max-width: 560px;
}
table.explain-grid th,
table.explain-grid td {
    padding: 6px 14px;
    border: 1px solid var(--border-soft);
    text-align: left;
    color: var(--text-dim);
}
table.explain-grid th {
    background: var(--bg-card-2);
    color: var(--text);
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    font-weight: 600;
}
table.explain-grid td.num { text-align: right; color: var(--accent-2); }

/* ============================================================ FOOTER        */

.footer {
    max-width: 1240px;
    margin: 24px auto 18px;
    padding: 16px 24px;
    color: var(--text-muted);
    font-size: 12px;
    display: flex;
    justify-content: space-between;
    border-top: 1px solid var(--border-soft);
    font-family: var(--mono);
}

/* ============================================================ RESPONSIVE   */

@media (max-width: 720px) {
    main { padding: 0 12px 24px; }
    .topbar { padding: 10px 12px 0; }
    .card { padding: 16px; }
    .controls { padding: 12px; gap: 8px 10px; }
    .controls select { min-width: 110px; }
    .info-grid { grid-template-columns: 1fr 1fr; }
    table.results th, table.results td { padding: 7px 10px; font-size: 12px; }
    table.results td.bar-col, table.results th.bar-col { width: 110px; min-width: 100px; }
}