/* ── G-Bench page styles ────────────────────────────────────────────────
   Extends the Vegoia design system (../assets/css/base.css + style.css
   provides .hud-nav, .section-header, .footer-section). G-Bench-specific
   surfaces live here. */

/* ── Hero ─────────────────────────────────────────────────────────────── */
.gbench-hero {
  position: relative;
  min-height: 62vh;
  display: flex;
  align-items: center;
  padding: calc(var(--space-16) + var(--space-8)) var(--space-6) var(--space-10);
  background: var(--color-bg);
  border-bottom: 1px solid var(--color-border);
  overflow: hidden;
}

/* Hero background video — same treatment as the index hero */
.gbench-hero__video-wrap {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.gbench-hero__video {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  display: block;
  opacity: 0.4; /* dim so text reads clearly */
}

.gbench-hero__gradient {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(700px at 18% 0%, rgba(0, 180, 200, 0.06), transparent 65%),
    linear-gradient(
      to bottom,
      rgba(13, 13, 11, 0.35) 0%,
      rgba(13, 13, 11, 0.15) 40%,
      rgba(13, 13, 11, 0.30) 65%,
      rgba(13, 13, 11, 0.88) 90%,
      rgba(13, 13, 11, 1.00) 100%
    );
  pointer-events: none;
}

.gbench-hero__scanlines {
  position: absolute;
  inset: 0;
  background: repeating-linear-gradient(
    to bottom,
    transparent 0px,
    transparent 2px,
    rgba(0, 0, 0, 0.08) 2px,
    rgba(0, 0, 0, 0.08) 4px
  );
  pointer-events: none;
  z-index: 1;
}

@media (prefers-reduced-motion: reduce) {
  .gbench-hero__video-wrap { display: none; }
}

.gbench-hero__inner {
  position: relative;
  z-index: 3;
  width: min(var(--content-default), 100%);
  margin: 0 auto;
}

.gbench-hero__chapter {
  font-size: var(--text-xs);
  letter-spacing: 0.22em;
  color: var(--color-text-muted);
  text-transform: uppercase;
}

.gbench-hero__title {
  margin-top: var(--space-4);
  font-family: var(--font-display);
  font-size: clamp(3rem, 7vw, 5.5rem);
  line-height: 0.95;
  font-weight: 400;
  color: var(--color-text);
}

.gbench-hero__cursor {
  color: var(--color-primary);
  animation: gbench-blink 1.1s steps(1) infinite;
}

@keyframes gbench-blink { 50% { opacity: 0; } }

.gbench-hero__subtitle {
  margin-top: var(--space-4);
  font-size: var(--text-sm);
  letter-spacing: 0.18em;
  color: var(--color-primary);
}

.gbench-hero__desc {
  margin-top: var(--space-4);
  max-width: 62ch;
  color: var(--color-text-muted);
  font-size: var(--text-base);
  line-height: 1.7;
}

.gbench-hero__stamp {
  position: absolute;
  top: 0;
  right: 0;
  padding: var(--space-3) var(--space-4);
  border: 1px dashed var(--color-text-faint);
  color: var(--color-text-muted);
  font-size: var(--text-xs);
  letter-spacing: 0.2em;
  text-transform: uppercase;
  text-align: right;
  line-height: 1.8;
  transform: rotate(2deg);
}

/* ── Scoreboard ───────────────────────────────────────────────────────── */
.gbench-scores {
  padding: var(--space-12) var(--space-6);
  border-bottom: 1px solid var(--color-border);
  background: var(--color-bg);
}

.gbench-scores__inner {
  width: min(var(--content-default), 100%);
  margin: 0 auto;
}

.gbench-scores .section-header { margin-bottom: var(--space-6); }

.gbench-scores__lede {
  max-width: 68ch;
  font-size: var(--text-sm);
  line-height: 1.7;
  color: var(--color-text-muted);
}

/* Chart: three aligned rows (values / bars / names) sharing one column grid,
   with the score scale in the left gutter. */
.gbench-scores__chart {
  margin-top: var(--space-8);
  display: grid;
  grid-template-columns: auto 1fr;
  grid-template-rows: auto auto auto;
  column-gap: 0;
  /* Many runs → the column row outgrows the viewport; scroll the whole chart
     as one unit so the three aligned rows never drift apart. */
  overflow-x: auto;
}

.gbench-scores__scale {
  position: relative;
  grid-column: 1;
  grid-row: 2;
  width: 3.25rem;
}

.gbench-scores__scale span {
  position: absolute;
  right: var(--space-3);
  display: block;
  line-height: 1;
  transform: translateY(50%);
  font-size: 0.6rem;
  letter-spacing: 0.1em;
  color: var(--color-text-faint);
}

.gbench-scores__vals,
.gbench-scores__tracks,
.gbench-scores__names {
  grid-column: 2;
  display: grid;
  grid-auto-flow: column;
  grid-auto-columns: 132px;
  gap: var(--space-6);
  justify-content: start;
}

.gbench-scores__vals { grid-row: 1; }
.gbench-scores__tracks { grid-row: 2; }
.gbench-scores__names { grid-row: 3; margin-top: var(--space-3); }

.gbench-scores__vals > * {
  font-family: var(--font-mono);
  font-size: 1.15rem;
  line-height: 1.5;
  color: var(--color-primary);
}

.gbench-scores__tracks {
  position: relative;
  background-image: linear-gradient(to top, var(--color-divider) 1px, transparent 1px);
  background-size: 100% 25%;
}

.gbench-scores__tracks::before {
  content: '';
  position: absolute;
  inset: 0 0 auto 0;
  height: 1px;
  background: var(--color-divider);
}

.gbench-score-track {
  position: relative;
  height: 240px; /* the bar field: this full height is 100 */
}

.gbench-score-bar {
  position: absolute;
  inset: auto 0 0 0;
  height: calc(var(--score) * 1%);
  background: linear-gradient(
    to top,
    var(--color-primary-dim),
    rgba(0, 180, 200, 0.38)
  );
  border-top: 1px solid var(--color-primary);
  animation: gbench-score-grow 900ms cubic-bezier(0.16, 1, 0.3, 1) both;
  animation-delay: var(--d, 0ms);
}

@keyframes gbench-score-grow {
  from { height: 0; }
}

.gbench-score-track--leader .gbench-score-bar {
  background: linear-gradient(
    to top,
    rgba(196, 130, 10, 0.10),
    rgba(196, 130, 10, 0.34)
  );
  border-top-color: var(--color-gold-bright);
}

.gbench-scores__names > * {
  font-size: var(--text-xs);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-text);
  line-height: 1.5;
}

.gbench-scores__names > * span {
  display: block;
  margin-top: var(--space-1);
  letter-spacing: 0.08em;
  text-transform: none;
  color: var(--color-text-faint);
}

.gbench-scores__footnote {
  margin-top: var(--space-6);
  font-size: var(--text-xs);
  line-height: 1.8;
  letter-spacing: 0.06em;
  color: var(--color-text-faint);
}

/* ── Main / grid ──────────────────────────────────────────────────────── */
.gbench-main {
  width: min(var(--content-default), 100%);
  margin: 0 auto;
  padding: var(--space-10) var(--space-6) var(--space-12);
}

.gbench-note {
  margin-top: var(--space-6);
  font-size: var(--text-xs);
  letter-spacing: 0.18em;
  color: var(--color-text-faint);
  text-transform: uppercase;
}

.gbench-grid {
  margin-top: var(--space-4);
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: var(--space-4);
}

/* ── Run card ─────────────────────────────────────────────────────────── */
.gbench-card {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  padding: var(--space-4);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  text-decoration: none;
  color: inherit;
  transition:
    border-color var(--transition-interactive),
    box-shadow var(--transition-interactive),
    transform var(--transition-interactive);
}

.gbench-card:hover {
  border-color: var(--color-primary);
  box-shadow: var(--shadow-teal);
  transform: translateY(-2px);
}

.gbench-card__tag {
  font-size: var(--text-xs);
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--color-text-muted);
}

.gbench-card__tag .tag-accent { color: var(--color-gold-bright); }

.gbench-card__model {
  font-size: 1.35rem;
  font-weight: 500;
  color: var(--color-text);
  line-height: 1.2;
}

.gbench-card__variant {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  font-family: var(--font-mono);
  line-height: 1.5;
}

.gbench-card__stats {
  margin-top: auto;
  padding-top: var(--space-3);
  border-top: 1px solid var(--color-divider);
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-3);
}

.gbench-card__stats dt {
  font-size: 0.6rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-text-faint);
}

.gbench-card__stats dd {
  margin-top: 2px;
  font-family: var(--font-mono);
  font-size: 0.95rem;
  color: var(--color-primary);
}

.gbench-card__cta {
  font-size: var(--text-xs);
  letter-spacing: 0.16em;
  color: var(--color-gold-bright);
}

/* ── Method section ───────────────────────────────────────────────────── */
.gbench-method {
  padding: var(--space-10) var(--space-6) var(--space-12);
  border-top: 1px solid var(--color-border);
  background: var(--color-surface);
}

.gbench-method__grid {
  width: min(var(--content-default), 100%);
  margin: var(--space-6) auto 0;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(340px, 100%), 1fr));
  gap: var(--space-8) var(--space-6);
}

/* Keep the section header aligned with the 960px content column, like the
   runs and scoreboard headers (which live inside a constrained wrapper). */
.gbench-method .section-header {
  width: min(var(--content-default), 100%);
  margin: 0 auto var(--space-6);
}

.gbench-method__idx {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--color-primary);
  letter-spacing: 0.2em;
}

.gbench-method__item h3 {
  margin-top: var(--space-2);
  font-size: var(--text-sm);
  letter-spacing: 0.18em;
  color: var(--color-text);
}

.gbench-method__item p {
  margin-top: var(--space-3);
  font-size: var(--text-sm);
  line-height: 1.7;
  color: var(--color-text-muted);
}

.gbench-method__item p strong {
  color: var(--color-text);
  font-weight: 500;
}

.gbench-method__intro,
.gbench-method__footnote {
  width: min(var(--content-default), 100%);
  margin: var(--space-6) auto 0;
  font-size: var(--text-sm);
  line-height: 1.8;
  color: var(--color-text-muted);
}

.gbench-method__footnote {
  margin-top: var(--space-8);
  padding-top: var(--space-4);
  border-top: 1px solid var(--color-divider);
  font-size: var(--text-xs);
  letter-spacing: 0.04em;
  color: var(--color-text-faint);
}

.gbench-method__item code {
  font-family: var(--font-mono);
  font-size: 0.85em;
  color: var(--color-gold-bright);
}

/* ── Mobile ───────────────────────────────────────────────────────────── */
@media (max-width: 720px) {
  .gbench-hero__stamp { display: none; }
  .gbench-hero { min-height: 52vh; }
}

@media (max-width: 520px) {
  /* Narrower columns so at least two models fit on a phone before the
     chart has to scroll. */
  .gbench-scores__vals,
  .gbench-scores__tracks,
  .gbench-scores__names {
    grid-auto-columns: 108px;
    gap: var(--space-4);
  }
}