/* Human AI Studio Labs — Editorial & Human */

@font-face {
  font-family: "Plus Jakarta Sans";
  src: url("/assets/fonts/PlusJakartaSans-Variable.woff2") format("woff2");
  font-weight: 200 800;
  font-display: swap;
}

@font-face {
  font-family: "Inter";
  src: url("/assets/fonts/Inter-Variable.woff2") format("woff2");
  font-weight: 100 900;
  font-display: swap;
}

:root {
  /* Brand palette (docs/03-visual-identity.md) */
  --coral: #FC7140;
  --sage: #758176;
  --earth: #4A2A1F;
  --charcoal: #191919;
  --sand: #F7F5F2;
  --white: #FFFFFF;

  /* UI tokens */
  --bg: var(--sand);
  --surface: var(--white);
  --text: var(--charcoal);
  --text-muted: #55504B;   /* 7.5:1 on sand */
  --line: #E4DFD8;
  --coral-tint: #FEE6DC;
  --focus: var(--earth);

  --font-heading: "Plus Jakarta Sans", ui-sans-serif, system-ui, sans-serif;
  --font-body: "Inter", ui-sans-serif, system-ui, sans-serif;

  --container: 1120px;
  --gutter: clamp(16px, 4vw, 32px);
  --section-space: clamp(72px, 11vw, 140px);
  --radius: 20px;
}

*, *::before, *::after { box-sizing: border-box; }

html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  font-size: 1.0625rem;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

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

h1, h2, h3 {
  font-family: var(--font-heading);
  font-weight: 600;
  letter-spacing: -0.02em;
  line-height: 1.1;
  margin: 0;
}

p { margin: 0; }

a { color: inherit; }

:focus-visible {
  outline: 3px solid var(--focus);
  outline-offset: 3px;
  border-radius: 6px;
}

.container {
  width: 100%;
  max-width: calc(var(--container) + var(--gutter) * 2);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.skip-link {
  position: absolute;
  left: 16px;
  top: -100px;
  z-index: 10;
  padding: 10px 16px;
  background: var(--charcoal);
  color: var(--white);
  border-radius: 8px;
  text-decoration: none;
}
.skip-link:focus { top: 16px; }

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 5;
  background: color-mix(in srgb, var(--sand) 88%, transparent);
  backdrop-filter: saturate(1.2) blur(10px);
  -webkit-backdrop-filter: saturate(1.2) blur(10px);
  border-bottom: 1px solid transparent;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  min-height: 76px;
}

/* Clear space: >= 1/4 of displayed Bridge height (40px → 10px) */
.brand { display: inline-block; padding: 10px; margin-left: -10px; border-radius: 8px; }
.brand img { height: 40px; width: auto; }

.nav-list {
  display: flex;
  gap: clamp(16px, 3vw, 36px);
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav-list a {
  font-size: 0.95rem;
  font-weight: 500;
  text-decoration: none;
  color: var(--text);
  padding: 8px 2px;
  background-image: linear-gradient(var(--coral), var(--coral));
  background-size: 0 2px;
  background-position: 0 100%;
  background-repeat: no-repeat;
  transition: background-size 0.2s ease;
}
.nav-list a:hover { background-size: 100% 2px; }

/* Shared */
.eyebrow {
  font-family: var(--font-heading);
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--earth);
  margin-bottom: 20px;
}

.section { padding-block: var(--section-space); }

.section-head { max-width: 720px; margin-bottom: clamp(40px, 6vw, 64px); }

h2 { font-size: clamp(2rem, 4.6vw, 3.25rem); }

.section-intro {
  margin-top: 20px;
  font-size: 1.15rem;
  color: var(--text-muted);
  max-width: 60ch;
}

/* Hero */
.hero { padding-block: clamp(56px, 10vw, 128px) clamp(64px, 10vw, 120px); }

.hero-inner {
  display: grid;
  grid-template-columns: minmax(0, 1.25fr) minmax(0, 1fr);
  align-items: center;
  gap: clamp(32px, 6vw, 80px);
}

h1 {
  font-size: clamp(2.75rem, 7.4vw, 5.75rem);
  letter-spacing: -0.035em;
  line-height: 1.02;
}

.lede {
  margin-top: 28px;
  font-size: clamp(1.1rem, 1.6vw, 1.3rem);
  color: var(--text-muted);
  max-width: 34em;
}

.actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 40px; }

.button {
  display: inline-flex;
  align-items: center;
  min-height: 48px;
  padding: 12px 24px;
  border-radius: 999px;
  font-weight: 500;
  text-decoration: none;
  transition: background-color 0.2s ease, color 0.2s ease, border-color 0.2s ease;
}

.button-primary { background: var(--charcoal); color: var(--white); }
.button-primary:hover { background: var(--earth); }

.button-quiet { border: 1.5px solid var(--charcoal); color: var(--charcoal); }
.button-quiet:hover { background: var(--charcoal); color: var(--white); }

.hero-mark { padding: 12%; }
.hero-mark img { width: 100%; }

/* Product */
.product-card {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  align-items: center;
  gap: 40px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: clamp(28px, 5vw, 64px);
}

.status {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px;
  border-radius: 999px;
  background: var(--coral-tint);
  color: var(--earth);
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 24px;
}
.status-dot { width: 8px; height: 8px; border-radius: 50%; background: var(--coral); }

.product-card h3 { font-size: clamp(1.9rem, 3.6vw, 2.6rem); }

.product-line {
  margin-top: 14px;
  font-size: 1.2rem;
  color: var(--text-muted);
  max-width: 28ch;
}

/* Box breathing figure: a dot tracing four equal sides */
.breath-figure {
  display: grid;
  place-items: center;
  padding: 44px 64px;
}

.breath-box {
  --size: clamp(150px, 22vw, 220px);
  position: relative;
  width: var(--size);
  height: var(--size);
  border: 2px solid var(--sage);
  border-radius: 6px;
}

.breath-dot {
  position: absolute;
  top: -8px;
  left: -8px;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--coral);
  box-shadow: 0 0 0 6px color-mix(in srgb, var(--coral) 22%, transparent);
  animation: trace 16s linear infinite;
}

@keyframes trace {
  0%   { transform: translate(0, 0); }
  25%  { transform: translate(var(--size), 0); }
  50%  { transform: translate(var(--size), var(--size)); }
  75%  { transform: translate(0, var(--size)); }
  100% { transform: translate(0, 0); }
}

.breath-label {
  position: absolute;
  font-family: var(--font-heading);
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-muted);
}
.breath-top    { top: -34px; left: 50%; transform: translateX(-50%); }
.breath-bottom { bottom: -34px; left: 50%; transform: translateX(-50%); }
.breath-right  { right: -16px; top: 50%; transform: translate(100%, -50%); }
.breath-left   { left: -16px; top: 50%; transform: translate(-100%, -50%); }

@media (prefers-reduced-motion: reduce) {
  .breath-dot { animation: none; }
}

/* About */
.section-about { background: var(--surface); border-block: 1px solid var(--line); }

.principles {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: clamp(32px, 4vw, 56px);
  list-style: none;
  margin: 0;
  padding: 0;
  counter-reset: principle;
}

.principles li {
  counter-increment: principle;
  border-top: 2px solid var(--charcoal);
  padding-top: 24px;
}

.principles li::before {
  content: "0" counter(principle);
  display: block;
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: 0.85rem;
  letter-spacing: 0.1em;
  color: var(--earth);
  margin-bottom: 16px;
}

.principles h3 { font-size: 1.35rem; margin-bottom: 12px; }
.principles p { color: var(--text-muted); }

/* Contact */
.contact-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  justify-content: space-between;
  gap: 32px;
}

.contact-email {
  font-family: var(--font-heading);
  font-size: clamp(1.25rem, 3vw, 2rem);
  font-weight: 500;
  letter-spacing: -0.01em;
  text-decoration: none;
  overflow-wrap: anywhere;
  padding-bottom: 6px;
  border-bottom: 2px solid var(--coral);
  transition: color 0.2s ease;
}
.contact-email:hover { color: var(--earth); }

/* Footer: white artwork on charcoal */
.site-footer {
  background: var(--charcoal);
  color: var(--white);
  padding-block: clamp(56px, 8vw, 88px);
}

.footer-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  justify-content: space-between;
  gap: 40px;
}

.footer-lockup { width: 480px; }
.footer-symbol { display: none; width: 116px; }

.footer-meta { text-align: right; color: #CFCAC4; font-size: 0.95rem; }
.footer-line { font-family: var(--font-heading); font-weight: 500; color: var(--white); margin-bottom: 6px; }

/* Policy pages */
.policy h1 { font-size: clamp(2.5rem, 6vw, 4rem); }
.policy-date { margin-top: 16px; color: var(--text-muted); font-size: 0.95rem; }
.policy-body { max-width: 68ch; margin-top: 8px; }
.policy-body .lede { margin-top: 32px; }
.policy-body h2 { font-size: 1.35rem; margin: 40px 0 10px; }
.policy-body p { color: var(--text-muted); }
.policy-body a { color: var(--text); text-decoration-color: var(--coral); text-underline-offset: 3px; }
.policy-body a:hover { color: var(--earth); }

/* Responsive */
@media (max-width: 860px) {
  .hero-inner { grid-template-columns: 1fr; }
  .hero-mark { display: none; } /* the header Bridge already identifies the studio */
  .product-card { grid-template-columns: 1fr; }
  .principles { grid-template-columns: 1fr; }
}

/* Below the 480px lockup minimum plus gutters, use the symbol */
@media (max-width: 560px) {
  .footer-lockup { display: none; }
  .footer-symbol { display: block; }
  .footer-meta { text-align: left; }
  .breath-figure { padding: 44px 56px; }
  .nav-list { gap: 14px; }
  .nav-list a { font-size: 0.9rem; }
}