/* ========== Starfish design tokens — brand-accurate ========== */
:root {
  /* Type */
  --font-display: "Instrument Serif", "Iowan Old Style", Georgia, serif;
  --font-body: "Geist", system-ui, -apple-system, "Helvetica Neue", sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, "SF Mono", Menlo, monospace;

  /* --- Brand colors (sampled from logo) --- */
  --brand-teal: #2FB19F;        /* logo mark */
  --brand-teal-deep: #1F8478;
  --brand-teal-darker: #145c54;
  --brand-teal-soft: #c5e8e2;
  --brand-teal-paper: #e8f5f1;
  --brand-slate: #274956;        /* logo wordmark */
  --brand-slate-2: #3a5e6c;
  --brand-slate-deep: #15303a;

  /* --- Default = teal-led --- */
  --ink: #274956;                /* the wordmark slate */
  --ink-2: #3a5e6c;
  --ink-3: #6e8590;
  --ink-4: #a8b8c0;
  --rule: rgba(39, 73, 86, 0.10);
  --rule-strong: rgba(39, 73, 86, 0.20);
  --surface: #f5f0e6;             /* warm cream */
  --surface-2: #ebe4d2;
  --surface-3: #ffffff;
  --paper: #fbf7ed;
  --primary: var(--brand-teal);
  --primary-deep: var(--brand-teal-deep);
  --primary-darker: var(--brand-teal-darker);
  --primary-soft: var(--brand-teal-soft);
  --primary-paper: var(--brand-teal-paper);
  --accent: var(--brand-slate-deep);
  --warm: #c08a4d;
  --warm-soft: #ead6b8;
  --alert: #d36247;

  /* Layout */
  --max: 1320px;
  --gutter: clamp(28px, 5vw, 72px);
  --section-y: clamp(64px, 9vw, 140px);
  --radius-sm: 4px;
  --radius: 10px;
  --radius-lg: 18px;
  --radius-xl: 28px;
}

/* Palette: navy-led (slate dominant) */
body[data-palette="navy"] {
  --ink: #15303a;
  --ink-2: #274956;
  --ink-3: #5a7180;
  --rule: rgba(21, 48, 58, 0.10);
  --rule-strong: rgba(21, 48, 58, 0.22);
  --surface: #eff2f5;
  --surface-2: #dde4eb;
  --paper: #f6f8fa;
  --primary: #274956;          /* slate as primary */
  --primary-deep: #15303a;
  --primary-darker: #0a1c24;
  --primary-soft: #cdd9df;
  --primary-paper: #dfe7ec;
  --accent: var(--brand-teal);
}

/* Palette: warm earth */
body[data-palette="warm"] {
  --ink: #2c2317;
  --ink-2: #443524;
  --ink-3: #756249;
  --rule: rgba(44, 35, 23, 0.10);
  --rule-strong: rgba(44, 35, 23, 0.22);
  --surface: #f3ead7;
  --surface-2: #e8d8b3;
  --paper: #faf2df;
  --primary: var(--brand-teal-deep);
  --primary-deep: var(--brand-teal-darker);
  --primary-soft: #d6ebe6;
  --primary-paper: #e2efeb;
  --accent: #a26a30;
  --warm: #a26a30;
}

/* Density */
body[data-density="compact"] {
  --section-y: clamp(48px, 6vw, 96px);
}

/* ========== Base ========== */
* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
html { scroll-behavior: smooth; scroll-padding-top: 84px; }
body {
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.55;
  color: var(--ink);
  background: var(--surface);
  font-feature-settings: "ss01", "ss02", "cv11";
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

::selection { background: var(--primary); color: #fff; }

a { color: inherit; text-decoration: none; }
button { font-family: inherit; cursor: pointer; }

/* Visible keyboard focus everywhere; invisible for mouse users */
:focus { outline: none; }
:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 2px;
  border-radius: 4px;
}
.btn:focus-visible { outline-offset: 3px; }

img { max-width: 100%; display: block; }

/* ========== Reusable utility classes ========== */
.container {
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 var(--gutter);
}
.eyebrow {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--ink-3);
  font-weight: 500;
}
.display {
  font-family: var(--font-display);
  font-weight: 400;
  letter-spacing: -0.015em;
  line-height: 1.02;
  color: var(--ink);
  margin: 0;
  text-wrap: balance;
}
.display em { font-style: italic; color: var(--primary-deep); }
.h-xl { font-size: clamp(48px, 7.2vw, 104px); }
.h-l  { font-size: clamp(36px, 4.8vw, 68px); }
.h-m  { font-size: clamp(28px, 3.4vw, 48px); }

.body-l {
  font-size: clamp(17px, 1.25vw, 21px);
  line-height: 1.5;
  color: var(--ink-2);
  text-wrap: pretty;
}

/* Button */
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 14px 22px;
  border-radius: 999px;
  font-size: 15px;
  font-weight: 500;
  border: 1px solid transparent;
  transition: all .2s ease;
  white-space: nowrap;
  letter-spacing: -0.005em;
}
.btn-primary {
  background: var(--primary);
  color: #fff;
}
.btn-primary:hover { background: var(--primary-deep); transform: translateY(-1px); box-shadow: 0 10px 24px -10px rgba(47,177,159,0.5); }
.btn-ghost {
  background: transparent;
  color: var(--ink);
  border-color: var(--rule-strong);
}
.btn-ghost:hover {
  border-color: var(--ink);
  background: rgba(0,0,0,.02);
}
.btn-ink {
  background: var(--ink);
  color: var(--surface);
}
.btn-ink:hover { background: var(--brand-slate-deep); }
.btn-light {
  background: var(--surface);
  color: var(--ink);
}
.btn-light:hover { background: #fff; }

/* ========== Section ========== */
.section { padding: var(--section-y) 0; }
.section-divider { height: 1px; background: var(--rule); }

/* Tag */
.tag {
  display: inline-flex; align-items: center; gap: 6px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .08em;
  text-transform: uppercase;
  padding: 6px 10px;
  border-radius: 999px;
  background: var(--paper);
  color: var(--ink-2);
  border: 1px solid var(--rule);
}
.tag-teal {
  background: var(--primary-paper);
  color: var(--primary-deep);
  border-color: var(--primary-soft);
}
.dot {
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--primary);
}

/* Focus visibility — keyboard users get a clear ring; mouse users don't */
:focus-visible {
  outline: 2px solid var(--primary, #1d8c7f);
  outline-offset: 2px;
  border-radius: 4px;
}
:focus:not(:focus-visible) { outline: none; }

/* ========== Animations ========== */
@keyframes pulse-soft {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.55; transform: scale(1.18); }
}
@keyframes dash-flow {
  to { stroke-dashoffset: -40; }
}
@keyframes packet-flow {
  0% { offset-distance: 0%; opacity: 0; }
  10% { opacity: 1; }
  90% { opacity: 1; }
  100% { offset-distance: 100%; opacity: 0; }
}
@keyframes fade-up {
  from { transform: translateY(18px); }
  to { transform: translateY(0); }
}
@keyframes marquee {
  from { transform: translateX(0); }
  to { transform: translateX(-50%); }
}
.fade-up { opacity: 1; }
@media (prefers-reduced-motion: no-preference) {
  .fade-up { animation: fade-up .8s ease; }
}

/* Reduce motion */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: .01ms !important;
    transition-duration: .01ms !important;
  }
}