/* muscle-supermimic project page.
   Monochrome with one accent, Inter + JetBrains Mono, hairline rules; chart colors are the
   validated categorical slots (blue, orange), stepped for the dark surface. */

:root {
  color-scheme: light;
  --bg:            #ffffff;
  --bg-alt:        #fafafa;
  --bg-hero:       #f7f8fa;
  --surface:       #fcfcfb;
  --text:          #1a1a1a;
  --text-muted:    #5f5e5a;
  --text-light:    #898781;
  --border:        #e0e0e0;
  --grid:          #e1e0d9;
  --axis:          #c3c2b7;
  --series-1:      #2a78d6;
  --series-2:      #eb6834;
  --series-1-wash: rgba(42, 120, 214, 0.10);

  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', ui-monospace, monospace;

  --max-width: 1100px;
  --max-medium: 900px;
  --max-narrow: 760px;
  --radius: 4px;
}

@media (prefers-color-scheme: dark) {
  :root:where(:not([data-theme="light"])) {
    color-scheme: dark;
    --bg:            #111110;
    --bg-alt:        #1a1a19;
    --bg-hero:       #161615;
    --surface:       #1a1a19;
    --text:          #f0efec;
    --text-muted:    #c3c2b7;
    --text-light:    #898781;
    --border:        #2f2f2d;
    --grid:          #2c2c2a;
    --axis:          #383835;
    --series-1:      #3987e5;
    --series-2:      #d95926;
    --series-1-wash: rgba(57, 135, 229, 0.14);
  }
}
:root[data-theme="dark"] {
  color-scheme: dark;
  --bg:            #111110;
  --bg-alt:        #1a1a19;
  --bg-hero:       #161615;
  --surface:       #1a1a19;
  --text:          #f0efec;
  --text-muted:    #c3c2b7;
  --text-light:    #898781;
  --border:        #2f2f2d;
  --grid:          #2c2c2a;
  --axis:          #383835;
  --series-1:      #3987e5;
  --series-2:      #d95926;
  --series-1-wash: rgba(57, 135, 229, 0.14);
}

/* ── Base ─────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-font-smoothing: antialiased; }
body { font-family: var(--font-sans); font-size: 1rem; line-height: 1.65; color: var(--text); background: var(--bg); }
a { color: var(--text); text-decoration: underline; text-decoration-color: var(--border); text-underline-offset: 2px; transition: text-decoration-color .15s; }
a:hover { text-decoration-color: var(--text); }
img, video, svg { max-width: 100%; display: block; }
p + p { margin-top: 0.9rem; }
strong { font-weight: 600; }
code { font-family: var(--font-mono); font-size: 0.85em; background: var(--bg-alt); padding: 0.1em 0.35em; border-radius: var(--radius); border: 1px solid var(--border); }
pre { font-family: var(--font-mono); font-size: 0.82rem; line-height: 1.55; background: var(--bg-alt); border: 1px solid var(--border); border-radius: var(--radius); padding: 1rem 1.1rem; overflow-x: auto; }
pre code { background: none; border: 0; padding: 0; font-size: inherit; }
.muted { color: var(--text-muted); }

/* ── Layout ───────────────────────────────────────────────── */
.container { max-width: var(--max-width); margin: 0 auto; padding: 0 1rem; }
.medium { max-width: var(--max-medium); }
.narrow { max-width: var(--max-narrow); }
.section { padding: 2.5rem 0; }
.section h2 { font-size: 1.6rem; font-weight: 600; margin-bottom: 1.1rem; letter-spacing: 0.01em; display: flex; align-items: center; gap: 0.75rem; }
.section h2::after { content: ''; flex: 1; height: 1px; background: var(--border); }
.section h3 { font-size: 1.2rem; font-weight: 600; margin: 2rem 0 0.8rem; display: flex; align-items: center; gap: 0.75rem; }
.section h3::after { content: ''; flex: 1; height: 1px; background: var(--border); }
.two-col { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 1.5rem; align-items: start; }
.three-col { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 1rem; }
.four-col { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 0.8rem; }
@media (max-width: 720px) {
  .two-col, .three-col { grid-template-columns: minmax(0, 1fr); }
  .four-col { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

/* ── Hero ─────────────────────────────────────────────────── */
.hero { background: var(--bg-hero); padding: 2.75rem 1rem 2rem; text-align: center; border-bottom: 1px solid var(--border); }
.title { font-size: clamp(1.6rem, 4vw, 2.4rem); font-weight: 700; line-height: 1.2; letter-spacing: -0.02em; margin-bottom: 0.6rem; font-family: var(--font-mono); }
.subtitle { font-size: clamp(1.05rem, 2.2vw, 1.3rem); font-weight: 400; color: var(--text-muted); max-width: 40rem; margin: 0 auto 0.9rem; line-height: 1.4; }
.author-list { display: flex; flex-wrap: wrap; justify-content: center; gap: 0.3rem 1.5rem; margin-bottom: 0.45rem; font-size: 1.05rem; }
.author { font-weight: 500; }
.dev-note { display: inline-flex; align-items: baseline; gap: 0.5rem; max-width: 44rem; margin: 0 auto 1.1rem; padding: 0.4rem 0.9rem; border: 1px solid var(--border); border-radius: var(--radius); font-size: 0.85rem; line-height: 1.4; color: var(--text-muted); text-align: left; }
.dev-note i { flex: none; width: 7px; height: 7px; border-radius: 50%; background: var(--series-1); transform: translateY(-1px); }
.author sup, .affiliations sup { font-size: 0.7em; margin-left: 1px; opacity: 0.7; }
.affiliations { display: flex; flex-wrap: wrap; justify-content: center; gap: 0.2rem 1.2rem; font-size: 0.9rem; color: var(--text-muted); margin-bottom: 1.1rem; }
.link-buttons { display: flex; flex-wrap: wrap; justify-content: center; gap: 0.6rem; margin-bottom: 0.9rem; }
.btn { display: inline-flex; align-items: center; gap: 0.45rem; padding: 0.45rem 1rem; border-radius: var(--radius); font-size: 0.85rem; font-weight: 500; color: var(--text); background: transparent; border: 1px solid var(--border); text-decoration: none; transition: border-color .15s; }
.btn:hover { border-color: var(--text); }
.btn svg { width: 15px; height: 15px; fill: currentColor; }

/* ── Figures and media ────────────────────────────────────── */
figure { margin: 0; }
figcaption { font-size: 0.88rem; color: var(--text-muted); margin-top: 0.6rem; line-height: 1.55; }
figcaption strong { color: var(--text); margin-right: 0.3rem; }
.video { width: 100%; border-radius: var(--radius); background: #fff; aspect-ratio: 16 / 9; object-fit: cover; }
.teaser .video { aspect-ratio: 1920 / 582; }
.video.square { aspect-ratio: 1 / 1; }
.video.wide43 { aspect-ratio: 4 / 3; }
.clip-label { font-size: 0.82rem; color: var(--text-muted); margin-top: 0.35rem; }
.clip-label code { font-size: 0.78rem; overflow-wrap: anywhere; }
.lead { font-size: 1.05rem; }

/* ── Tables ───────────────────────────────────────────────── */
.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; font-size: 0.9rem; font-variant-numeric: tabular-nums; }
th, td { text-align: left; padding: 0.45rem 0.6rem; border-bottom: 1px solid var(--border); vertical-align: top; }
th { font-weight: 600; }
thead th { color: var(--text-muted); font-weight: 500; font-size: 0.82rem; }

/* ── Stat tiles ───────────────────────────────────────────── */
.stats { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 0.75rem; margin: 1.2rem 0 1.5rem; }
@media (max-width: 720px) { .stats { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
.stat { min-width: 0; overflow-wrap: anywhere; border: 1px solid var(--border); border-radius: var(--radius); padding: 0.8rem 0.9rem; background: var(--surface); }
.stat-label { font-size: 0.8rem; color: var(--text-muted); line-height: 1.35; }
.stat-value { font-size: 1.6rem; font-weight: 600; line-height: 1.2; margin-top: 0.3rem; }
.stat-value small { font-size: 0.85rem; font-weight: 500; color: var(--text-muted); margin-left: 0.2rem; }

/* ── Diagram ──────────────────────────────────────────────── */
.diagram svg { width: 100%; height: auto; }
.diagram .box { fill: var(--surface); stroke: var(--axis); stroke-width: 1; }
.diagram .box.accent { stroke: var(--series-1); stroke-width: 1.5; }
.diagram .exact { fill: var(--series-1-wash); }
.diagram text { fill: var(--text); font-family: var(--font-sans); font-size: 13px; }
.diagram text.small { fill: var(--text-muted); font-size: 11px; }
.diagram text.head { font-weight: 600; font-size: 12px; fill: var(--text-muted); letter-spacing: 0.04em; }
.diagram .edge { stroke: var(--text-light); stroke-width: 1.2; fill: none; }
.diagram .edge.loop { stroke: var(--series-1); stroke-width: 1.8; }
.diagram .arrow { fill: var(--text-light); }
.diagram .arrow.loop { fill: var(--series-1); }

/* ── Charts ───────────────────────────────────────────────── */
.chart { position: relative; }
.chart-title { font-size: 0.9rem; font-weight: 600; margin-bottom: 0.15rem; }
.chart-sub { font-size: 0.8rem; color: var(--text-muted); margin-bottom: 0.4rem; }
.chart svg { width: 100%; overflow: visible; }
.chart .grid line { stroke: var(--grid); stroke-width: 1; }
.chart .axis line, .chart .axis path { stroke: var(--axis); stroke-width: 1; }
.chart .tick text, .chart text.tick, .chart .axis-label { fill: var(--text-light); font-size: 11px; font-family: var(--font-sans); font-variant-numeric: tabular-nums; }
.chart .ref-line { stroke: var(--text-light); stroke-width: 1; }
.chart .ref-label, .chart .direct-label { fill: var(--text-muted); font-size: 11px; font-family: var(--font-sans); }
.chart .crosshair { stroke: var(--text-light); stroke-width: 1; }
.legend { display: flex; flex-wrap: wrap; gap: 0.3rem 1rem; font-size: 0.8rem; color: var(--text-muted); margin-bottom: 0.3rem; }
.legend span { display: inline-flex; align-items: center; gap: 0.4rem; }
.legend i { display: inline-block; width: 14px; height: 2px; border-radius: 1px; }
.tooltip { position: absolute; pointer-events: none; background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 0.4rem 0.55rem; font-size: 0.78rem; line-height: 1.45; box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08); white-space: nowrap; z-index: 2; }
.tooltip .tt-head { color: var(--text-muted); }
.tooltip .tt-row { display: flex; align-items: center; gap: 0.4rem; }
.tooltip .tt-row i { display: inline-block; width: 10px; height: 2px; border-radius: 1px; }
.tooltip .tt-row b { font-weight: 600; color: var(--text); }

/* ── Clip gallery ─────────────────────────────────────────── */
.gallery { display: grid; grid-template-columns: minmax(0, 5fr) minmax(0, 6fr); gap: 1.4rem; align-items: start; margin-top: 1rem; }
@media (max-width: 720px) { .gallery { grid-template-columns: minmax(0, 1fr); } }
.gallery-label { font-size: 0.72rem; font-weight: 600; letter-spacing: 0.05em; text-transform: uppercase; color: var(--text-light); margin: 0 0 0.4rem; }
.gallery-label:not(:first-child) { margin-top: 1rem; }
.gallery-chips { display: flex; flex-wrap: wrap; gap: 0.35rem; }
.chip { font: inherit; font-size: 0.8rem; line-height: 1.3; padding: 0.25rem 0.65rem; border: 1px solid var(--border); border-radius: 999px; background: var(--surface); color: var(--text-muted); cursor: pointer; }
.chip:hover { border-color: var(--text-light); color: var(--text); }
.chip[aria-pressed="true"] { border-color: var(--series-1); background: var(--series-1-wash); color: var(--text); }
.gallery-clips .chip { border-radius: var(--radius); font-family: var(--font-mono); font-size: 0.72rem; }
.gallery-info { font-size: 0.85rem; color: var(--text-muted); margin-top: 1rem; }

/* ── Footer ───────────────────────────────────────────────── */
footer { border-top: 1px solid var(--border); padding: 1.5rem 1rem 2.5rem; text-align: center; font-size: 0.8rem; color: var(--text-light); }