/* The site's own pages (home, models), on top of style.css and site-theme.css: the Carbon-blue page, the dark windows,
   the a11y-dark colours. Only what those pages need lives here. */

.wrap { max-width: 1120px; margin: 0 auto; padding-left: 24px; padding-right: 24px; }

/* ------------------------------------------------------------------ buttons and links */
.btn {
  display: inline-block;
  padding: 13px 22px;
  font: 600 15px/1 var(--sans);
  color: var(--window);
  text-decoration: none;
  background: #fff;
  border: 1.5px solid #fff;
  border-radius: 999px;
  cursor: pointer;
}

.btn:hover { background: var(--code-function); border-color: var(--code-function); }

.btn.quiet { color: #fff; background: transparent; border-color: rgba(255, 255, 255, 0.7); }

.btn.quiet:hover { color: var(--window); background: #fff; border-color: #fff; }

.btn.small { padding: 10px 16px; font-size: 14px; }

button.btn:disabled { opacity: 0.5; cursor: progress; }

.cta-row { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 30px; }

/* ------------------------------------------------------------------ windows (Carbon: dark, rounded, three dots) */
.window { position: relative; overflow: hidden; color: var(--code-text); background: var(--window); border-radius: var(--radius-window); }

.window-title {
  position: absolute;
  top: 0;
  left: 100px;
  right: 24px;
  height: 52px;
  display: flex;
  align-items: center;
  margin: 0;
  font: 13px/1 var(--mono);
  color: var(--code-comment);
}

.window-body { padding: 4px 28px 28px; }

.window-text { margin: 0 0 18px; color: var(--code-text); font-size: 15px; line-height: 1.6; }

/* ------------------------------------------------------------------ hero */
.hero { display: block; padding-top: 56px; padding-bottom: 8px; }

.hero-window { margin-top: 44px; }

.hero-copy h1 {
  max-width: 18em;
  margin: 0;
  font: 700 clamp(32px, 4.4vw, 54px)/1.1 var(--mono);
  letter-spacing: -0.03em;
  color: #fff;
  text-wrap: balance;
}

.hero-copy .lede { max-width: 58ch; font-size: 19px; line-height: 1.6; color: var(--desk-muted); }

.hero-grid { display: grid; grid-template-columns: 308px minmax(0, 1fr); gap: 32px; padding: 2px 28px 28px; align-items: start; }

.hero-scan { display: block; width: 100%; max-width: 308px; aspect-ratio: 1; }

.hero-scan-wrap .hint { max-width: 308px; margin-top: 12px; }

.term {
  min-height: 262px;
  margin: 0;
  font: 14px/1.7 var(--mono);
  color: var(--code-text);
  white-space: pre-wrap;
  overflow-wrap: anywhere;
}

.term::after { content: "▍"; color: var(--code-keyword); animation: blink 1.05s steps(2, start) infinite; }

.term-row { min-height: 1.7em; }

.hero-term-wrap .controls { margin-top: 14px; }

.tk-c { color: var(--code-comment); }
.tk-k { color: var(--code-keyword); }
.tk-s { color: var(--code-string); }
.tk-n { color: var(--code-number); }
.tk-f { color: var(--code-function); }
.tk-p, .tk-v { color: var(--code-property); }

/* ------------------------------------------------------------------ numbers */
.numbers { display: grid; grid-template-columns: repeat(auto-fit, minmax(230px, 1fr)); gap: 28px 36px; margin: 56px 0 0; padding: 0; }

.numbers .stat { display: flex; flex-direction: column; margin: 0; }

.numbers dd { margin: 0; }

.numbers .figure { order: 1; font: 700 44px/1.05 var(--mono); letter-spacing: -0.03em; color: #fff; font-variant-numeric: tabular-nums; }

.numbers dt { order: 2; margin-top: 8px; font: 14px/1.5 var(--sans); color: #fff; }

.numbers .source { order: 3; margin-top: 4px; font: 12px/1.5 var(--mono); color: var(--desk-muted); }

/* ------------------------------------------------------------------ sections */
.section { padding-top: 104px; }

.kicker {
  display: inline-block;
  margin: 0;
  padding: 7px 16px;
  font: 600 13px/1 var(--mono);
  color: var(--code-function);
  background: rgba(1, 40, 86, 0.7);
  border-radius: 999px;
}

.section-title { margin: 18px 0 16px; max-width: 28em; font: 700 clamp(26px, 3.4vw, 40px)/1.18 var(--mono); letter-spacing: -0.025em; color: #fff; }

.intro { max-width: 70ch; margin: 0 0 40px; font-size: 17px; line-height: 1.7; color: var(--desk-muted); }

.sub { margin: 44px 0 14px; font: 700 20px/1.3 var(--mono); letter-spacing: -0.01em; color: #fff; }

.prose-text { max-width: 62ch; margin: 0 0 16px; font-size: 16px; line-height: 1.7; color: var(--desk-muted); }

.prose-text code, .step-text code, .notes code, .card code, .limits code { padding: 1px 7px; font-size: 0.88em; background: rgba(1, 40, 86, 0.55); border-radius: 8px; }

.limits code { background: rgba(255, 255, 255, 0.08); }

.grid-2, .grid-3 { display: grid; gap: 24px; margin: 0 0 24px; align-items: start; }

.tools, .angles, .more { align-items: stretch; }

.grid-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }

.grid-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }

.grid-2.wide-left { grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.2fr); align-items: start; margin-top: 12px; }

.card { padding: 24px; color: #fff; background: var(--blue-night); border-radius: var(--radius-card); }

.card h4 { margin: 0 0 8px; font: 700 16px/1.35 var(--mono); }

.card p { margin: 0; font-size: 15px; line-height: 1.6; color: var(--desk-muted); }

.card p.tag { margin: 0 0 12px; }

.tag { display: inline-block; padding: 5px 12px; font: 600 12px/1 var(--mono); border-radius: 999px; }

.tag.done { color: #14210a; background: var(--code-string); }

.tag.idea { color: #fff; border: 1.5px solid rgba(255, 255, 255, 0.65); padding: 3.5px 10.5px; }

.note-line { margin-bottom: 20px; }

.fit { align-items: stretch; }

.notes.tight { gap: 10px; }

.notes.tight li { font-size: 14px; }

a.link-card { display: block; color: #fff; text-decoration: none; transition: background 0.2s; }

a.link-card:hover { background: #013466; }

a.link-card h4::after { content: " ↗"; color: var(--code-function); }

/* ------------------------------------------------------------------ notes list */
.notes { margin: 0; padding: 0; list-style: none; display: grid; gap: 14px; max-width: 62ch; }

.notes li { padding-left: 22px; position: relative; font-size: 15px; line-height: 1.65; color: var(--desk-muted); }

.notes li::before { content: ""; position: absolute; left: 0; top: 0.62em; width: 8px; height: 8px; border-radius: 50%; background: var(--code-function); }

.notes strong { color: #fff; }

/* ------------------------------------------------------------------ the neuron and the pipeline */
.neuron-row { display: flex; flex-wrap: wrap; align-items: center; gap: 5px; margin: 10px 0; }

.neuron-label { width: 68px; font: 12px/1 var(--mono); color: var(--code-comment); }

.bit, .product {
  width: 34px;
  height: 34px;
  padding: 0;
  display: grid;
  place-items: center;
  font: 600 13px/1 var(--mono);
  border-radius: 12px;
}

.bit[aria-pressed="true"] { color: #0a2b2b; background: var(--code-keyword); border-color: var(--code-keyword); }

.bit[aria-pressed="false"] { color: var(--code-property); background: transparent; border-color: var(--code-property); }

.bit:hover { color: var(--window); background: var(--code-function); border-color: var(--code-function); }

.product { color: var(--code-comment); background: #3d3d3d; border: 1px solid transparent; }

.product.match { color: var(--code-string); }

.neuron-readout { margin: 16px 0 0; font: 13px/1.65 var(--mono); color: var(--code-function); min-height: 4.9em; }

.pipeline { display: block; width: 100%; height: auto; margin-top: 6px; }

.pipe-box rect { fill: var(--window-raised); stroke: rgba(255, 255, 255, 0.16); }

.pipe-box text { fill: var(--code-text); font: 13px var(--mono); text-anchor: middle; }

.pipe-flow { fill: none; stroke: var(--code-keyword); stroke-width: 2.5; stroke-dasharray: 6 8; stroke-linecap: round; animation: flow 1.1s linear infinite; }

.pipe-equal circle { fill: var(--code-function); }

.pipe-equal text { fill: var(--window); font: 700 24px var(--mono); text-anchor: middle; }

/* ------------------------------------------------------------------ code windows */
.code-window { margin: 0; }

.code-bar { position: absolute; top: 0; left: 0; right: 0; height: 52px; display: flex; align-items: center; justify-content: space-between; padding: 0 18px 0 100px; }

.code-title { font: 13px/1 var(--mono); color: var(--code-comment); }

button.copy { padding: 6px 14px; font: 600 12px/1 var(--mono); color: var(--code-text); border-color: var(--window-line); }

pre.code { margin: 0; padding: 6px 28px 28px; overflow-x: auto; font: 14px/1.52 var(--mono); color: var(--code-text); tab-size: 2; white-space: pre; }

/* ------------------------------------------------------------------ timeline */
.timeline { display: grid; gap: 28px; margin: 36px 0 12px; padding: 0 0 0 30px; list-style: none; border-left: 2px solid rgba(255, 255, 255, 0.4); }

.timeline li { position: relative; max-width: 70ch; }

.timeline li::before { content: ""; position: absolute; left: -39px; top: 5px; width: 16px; height: 16px; background: #fff; border: 4px solid var(--blue); border-radius: 50%; box-sizing: border-box; box-shadow: 0 0 0 2px rgba(255, 255, 255, 0.55); }

.timeline time { display: inline-block; padding: 4px 12px; font: 600 12px/1 var(--mono); color: var(--code-function); background: var(--blue-night); border-radius: 999px; }

.timeline h3 { margin: 10px 0 4px; font: 700 18px/1.35 var(--mono); color: #fff; }

.timeline p { margin: 0; font-size: 15px; line-height: 1.65; color: var(--desk-muted); }

.timeline li::after { content: "report · " attr(data-evidence); display: block; margin-top: 6px; font: 12px/1.4 var(--mono); color: var(--desk-muted); opacity: 0.85; }

.timeline code { padding: 1px 7px; font-size: 0.88em; background: rgba(1, 40, 86, 0.55); border-radius: 8px; }

/* ------------------------------------------------------------------ labs */
.lab { margin: 0 0 24px; }

.lab-body { display: grid; grid-template-columns: minmax(0, 372px) minmax(0, 1fr); gap: 30px; padding: 4px 28px 28px; align-items: start; }

.lab-input .pads { flex-wrap: nowrap; gap: 16px; align-items: flex-end; }

.lab-input .pad { width: 232px; max-width: 100%; }

.lab-input .bits { width: 118px; height: 118px; }

.lab-input .pixelated { width: 160px; }

.lab-input .picker-label { margin-top: 20px; }

.lab-input .thumbs { grid-template-columns: repeat(auto-fill, minmax(36px, 1fr)); }

.lab-input figcaption { color: var(--code-comment); }

.lab-input .controls { margin-top: 16px; }

.lab-status { min-height: 1.6em; margin: 14px 0 0; font: 13px/1.6 var(--mono); color: var(--code-function); }

.nets { display: grid; grid-template-columns: repeat(auto-fill, minmax(200px, 1fr)); gap: 14px; margin: 0; padding: 0; list-style: none; }

.net { display: flex; flex-direction: column; gap: 6px; min-height: 188px; padding: 16px; background: var(--window-raised); border: 1.5px solid transparent; border-radius: 20px; transition: border-color 0.2s; }

.net[data-state="calling"] { border-color: var(--code-keyword); }
.net[data-state="done"] { border-color: var(--code-string); }
.net[data-state="warn"], .net[data-state="error"] { border-color: var(--code-property); }

.net-head { display: flex; flex-wrap: wrap; align-items: center; gap: 6px; }

.net-name { margin: 0; font: 700 14px/1.3 var(--mono); color: #fff; }

.chip { padding: 2px 9px; font: 600 11px/1.4 var(--mono); color: var(--code-keyword); border: 1px solid var(--code-keyword); border-radius: 999px; }

.net-arch { margin: 0; font: 12px/1.45 var(--mono); color: var(--code-comment); }

.net-body { flex: 1; display: flex; flex-direction: column; gap: 8px; }

.net-idle { margin: 0; font-size: 13px; color: var(--code-comment); }

.net-wait { display: flex; align-items: center; gap: 10px; font: 13px/1.4 var(--mono); color: var(--code-keyword); }

.net-spinner { flex: none; width: 14px; height: 14px; border: 2px solid var(--code-keyword); border-right-color: transparent; border-radius: 50%; animation: spin 0.8s linear infinite; }

.net-class { margin: 0; font: 700 28px/1.15 var(--mono); color: var(--code-function); overflow-wrap: anywhere; }

.net-times, .net-meta, .net-error { margin: 0; font: 11px/1.5 var(--mono); color: var(--code-comment); }

.net-error { color: var(--code-property); font-size: 12px; }

.net .stamps { margin: 0; gap: 6px; }

.net .stamp { font-size: 10px; padding: 4px 7px 3px; }

/* ------------------------------------------------------------------ replay, wall */
.replay { padding: 4px 28px 28px; }

.replay-board { display: block; width: 100%; max-width: 420px; aspect-ratio: 1; margin: 0 auto 10px; border-radius: 18px; }

.replay .hint, .window-body .hint { color: var(--code-comment); }

.wall { display: grid; grid-template-columns: repeat(auto-fill, minmax(148px, 1fr)); gap: 10px; margin: 0 0 14px; padding: 0; list-style: none; }

.tile { position: relative; display: grid; gap: 2px; padding: 12px 12px 12px 32px; background: var(--window-raised); border-radius: 18px; }

.tile-dot { position: absolute; left: 13px; top: 17px; width: 10px; height: 10px; background: #777; border-radius: 50%; }

.tile[data-state="asking"] .tile-dot { background: var(--code-keyword); animation: pulse 1s ease-in-out infinite; }
.tile[data-state="ok"] .tile-dot { background: var(--code-string); box-shadow: 0 0 0 4px rgba(171, 227, 56, 0.2); }
.tile[data-state="bad"] .tile-dot { background: var(--code-property); }

.tile-name { font: 600 12px/1.35 var(--mono); color: #fff; overflow-wrap: anywhere; }

.tile-address { font: 11px/1.4 var(--mono); color: var(--code-comment); }

.tile-status { min-height: 1.4em; font: 11px/1.4 var(--mono); color: var(--code-comment); }

.tile[data-state="ok"] .tile-status { color: var(--code-string); }
.tile[data-state="bad"] .tile-status { color: var(--code-property); }

/* ------------------------------------------------------------------ developer steps and limits */
.steps-code { display: grid; grid-template-columns: minmax(0, 0.8fr) minmax(0, 1.2fr); gap: 8px 36px; align-items: start; }

.step-text { padding-top: 6px; }

.step-text .sub { margin-top: 28px; }

.step-text p { max-width: 46ch; margin: 0; font-size: 15px; line-height: 1.7; color: var(--desk-muted); }

.steps-code .code-window { margin: 22px 0 8px; }

.limits-window { margin-top: 8px; }

.limits { margin: 0; padding: 4px 28px 24px; }

.limits > div { display: grid; grid-template-columns: 190px minmax(0, 1fr); gap: 6px 22px; padding: 16px 0; border-top: 1px solid var(--window-line); }

.limits > div:first-child { border-top: 0; }

.limits dt { font: 600 14px/1.5 var(--mono); color: var(--code-function); }

.limits dd { margin: 0; font-size: 15px; line-height: 1.65; color: var(--code-text); }

/* ------------------------------------------------------------------ colophon */
.colophon { margin-top: 112px; padding-top: 26px; padding-bottom: 56px; border-top: 1px solid rgba(255, 255, 255, 0.3); }

.colophon p { max-width: 80ch; margin: 0; font-size: 13px; line-height: 1.7; color: var(--desk-muted); }

/* ------------------------------------------------------------------ models page */
.toolbar { display: flex; flex-wrap: wrap; align-items: center; gap: 12px 20px; margin: 0 0 22px; }

.toolbar .summary { margin: 0; font: 13px/1.4 var(--mono); color: var(--desk-muted); }

.models { display: grid; gap: 18px; margin: 0; padding: 0; list-style: none; }

.model { padding: 22px 26px; background: var(--blue-night); border-radius: var(--radius-card); }

.model-head { display: flex; flex-wrap: wrap; align-items: baseline; gap: 6px 14px; margin-bottom: 6px; }

.model-head h3 { margin: 0; font: 700 18px/1.3 var(--mono); color: #fff; }

.kind { padding: 3px 9px; font: 11px/1 var(--mono); color: #fff; border: 1px solid rgba(255, 255, 255, 0.6); border-radius: 999px; }

.model p.desc { max-width: 70ch; margin: 0 0 14px; color: var(--desk-muted); }

.metrics { display: grid; grid-template-columns: repeat(auto-fit, minmax(190px, 1fr)); gap: 10px 24px; margin: 0 0 14px; }

.metrics div { margin: 0; }

.metrics dt { font: 11px/1.4 var(--mono); color: var(--desk-muted); }

.metrics dd { margin: 2px 0 0; font: 16px/1.4 var(--mono); color: #fff; font-variant-numeric: tabular-nums; }

.metrics dd small { display: block; font-size: 11px; color: var(--desk-muted); }

.model details { margin: 0 0 12px; font: 12px/1.5 var(--mono); color: var(--desk-muted); }

.model summary { cursor: pointer; }

.model details dl { display: grid; grid-template-columns: auto minmax(0, 1fr); gap: 4px 14px; margin: 8px 0 0; }

.model details dd { margin: 0; overflow-wrap: anywhere; color: #fff; }

.model details a { color: var(--code-function); }

.model-check { display: flex; flex-wrap: wrap; align-items: center; gap: 10px 16px; }

.check-lines { margin: 0; padding: 0; list-style: none; font: 12px/1.6 var(--mono); }

.check-lines .check-ok::before { content: "✓ "; }

.check-lines .check-bad::before { content: "✗ "; }

.check-lines .check-ok { color: var(--code-string); }

.note { max-width: 70ch; padding: 14px 20px; margin: 24px 0 0; font-size: 14px; line-height: 1.6; color: #fff; background: rgba(1, 40, 86, 0.7); border-radius: 18px; }

.note code { padding: 1px 6px; background: rgba(255, 255, 255, 0.12); border-radius: 6px; }

/* ------------------------------------------------------------------ motion */
@keyframes blink { to { visibility: hidden; } }
@keyframes spin { to { transform: rotate(360deg); } }
@keyframes pulse { 50% { opacity: 0.35; } }
@keyframes flow { to { stroke-dashoffset: -28; } }

/* ------------------------------------------------------------------ small screens */
@media (max-width: 960px) {
  .hero { padding-top: 40px; }
  .grid-2, .grid-2.wide-left, .steps-code, .lab-body { grid-template-columns: minmax(0, 1fr); }
  .grid-3 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .section { padding-top: 80px; }
  .steps-code .code-window { margin-top: 10px; }
}

@media (max-width: 640px) {
  .wrap { padding-left: 16px; padding-right: 16px; }
  .grid-3 { grid-template-columns: minmax(0, 1fr); }
  .hero-grid { grid-template-columns: minmax(0, 1fr); padding: 2px 18px 22px; }
  .term { font-size: 13px; min-height: 0; }
  .window-body, .lab-body, .replay { padding-left: 18px; padding-right: 18px; }
  pre.code { padding-left: 18px; padding-right: 18px; font-size: 13px; }
  .limits { padding-left: 18px; padding-right: 18px; }
  .limits > div { grid-template-columns: minmax(0, 1fr); }
  .numbers .figure { font-size: 36px; }
  .model { padding: 18px; }
  .code-bar, .window-title { padding-left: 100px; }
}

@media (prefers-reduced-motion: reduce) {
  .term::after { animation: none; }
  .pipe-flow, .net-spinner, .tile[data-state="asking"] .tile-dot { animation: none; }
  .print { animation: none; }
}