/* Demo storefront — visually evocative of Allbirds, not a copy.
   The widget is the load-bearing piece; everything here is set
   dressing so the agent doesn't appear on a blank page. */

:root {
  --ink: #1a1a1a;
  --ink-dim: #5a5a5a;
  --ink-faint: #8a8a8a;
  --paper: #ffffff;
  --paper-warm: #f6f3ee;
  --rule: #e6e2dc;
  --green: #2a6041;
  --green-hover: #234f36;
  --tan: #e8dcc4;
  --slate: #5a6470;
  --warm: #c9b8a7;
  --navy: #2c3e50;
  --cream: #f4d6c5;
  --bone: #ece4d5;
  --charcoal: #3b3b3b;
  --max: 1240px;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: "Inter", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  font-size: 16px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; text-decoration: none; }
a:hover { color: var(--green); }

.container {
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 24px;
}

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  background: var(--paper);
  border-bottom: 1px solid var(--rule);
}
.site-header__inner {
  display: flex;
  align-items: center;
  gap: 32px;
  height: 64px;
}
.brand {
  display: inline-flex;
  align-items: baseline;
  gap: 6px;
  font-weight: 700;
  font-size: 22px;
  letter-spacing: -0.02em;
  color: var(--ink);
}
.brand__badge {
  font-size: 10px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--ink-faint);
  border: 1px solid var(--rule);
  padding: 2px 6px;
  border-radius: 999px;
}
.primary-nav {
  display: flex;
  gap: 24px;
  flex: 1;
  margin-left: 24px;
  font-size: 14px;
  color: var(--ink-dim);
}
.utility-nav { display: flex; gap: 12px; }
.icon-btn {
  border: none;
  background: transparent;
  font-size: 18px;
  color: var(--ink-dim);
  cursor: pointer;
  padding: 6px 8px;
}
.icon-btn:hover { color: var(--ink); }

/* Hero */
.hero {
  background: var(--paper-warm);
  padding: 96px 0 112px;
  text-align: center;
}
.eyebrow {
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.16em;
  color: var(--ink-faint);
  margin: 0 0 12px;
}
.hero__title {
  font-size: clamp(40px, 6vw, 72px);
  margin: 0 0 20px;
  line-height: 1.05;
  letter-spacing: -0.025em;
  font-weight: 600;
}
.hero__sub {
  font-size: 18px;
  color: var(--ink-dim);
  max-width: 560px;
  margin: 0 auto 32px;
}

/* Buttons */
.btn {
  display: inline-block;
  font-weight: 500;
  font-size: 15px;
  padding: 14px 28px;
  border-radius: 999px;
  border: 1px solid transparent;
  cursor: pointer;
  transition: background 120ms ease, color 120ms ease, border-color 120ms ease;
}
.btn--primary {
  background: var(--green);
  color: white;
}
.btn--primary:hover { background: var(--green-hover); color: white; }
.btn--full { width: 100%; }

/* Product grid */
.product-grid {
  padding: 96px 0;
}
.section-head {
  text-align: center;
  margin-bottom: 56px;
}
.section-head h2 {
  font-size: 36px;
  font-weight: 600;
  letter-spacing: -0.02em;
  margin: 0 0 8px;
}
.section-sub {
  color: var(--ink-dim);
  margin: 0;
}
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 32px 24px;
}

.card { display: flex; flex-direction: column; }
.card__media {
  position: relative;
  display: block;
  aspect-ratio: 1 / 1;
  border-radius: 14px;
  overflow: hidden;
  transition: transform 200ms ease;
}
.card__media:hover { transform: translateY(-2px); }
.card__media--tan    { background: var(--tan); }
.card__media--slate  { background: var(--slate); }
.card__media--warm   { background: var(--warm); }
.card__media--navy   { background: var(--navy); }
.card__media--cream  { background: var(--cream); }
.card__badge {
  position: absolute;
  top: 12px;
  left: 12px;
  background: rgba(255, 255, 255, 0.94);
  color: var(--ink);
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  padding: 5px 9px;
  border-radius: 999px;
}
.card__body { padding: 14px 4px 0; }
.card__title {
  font-size: 16px;
  font-weight: 600;
  margin: 0 0 4px;
  letter-spacing: -0.005em;
}
.card__meta {
  font-size: 13px;
  color: var(--ink-dim);
  margin: 0 0 8px;
}
.card__price {
  font-size: 14px;
  font-weight: 600;
  margin: 0;
}

/* Story strip */
.story {
  background: var(--paper-warm);
  padding: 96px 0;
}
.story__inner {
  max-width: 720px;
  text-align: center;
  margin: 0 auto;
}
.story h2 {
  font-size: 32px;
  font-weight: 600;
  letter-spacing: -0.02em;
  margin: 0 0 16px;
}
.story p { color: var(--ink-dim); font-size: 17px; margin: 0; }

/* Product detail */
.product-page { padding: 56px 0 96px; }
.pdp {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: start;
}
.pdp__media {
  aspect-ratio: 1 / 1;
  border-radius: 18px;
  display: block;
}
.pdp__media--navy { background: var(--navy); }
.pdp__title {
  font-size: 40px;
  font-weight: 600;
  letter-spacing: -0.02em;
  margin: 6px 0 8px;
}
.pdp__price {
  font-size: 22px;
  font-weight: 600;
  margin: 0 0 24px;
}
.pdp__copy {
  color: var(--ink-dim);
  font-size: 17px;
  margin: 0 0 32px;
  max-width: 480px;
}
.pdp__row { margin-bottom: 24px; }
.pdp__label {
  display: block;
  font-size: 13px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 10px;
  color: var(--ink-dim);
}

.swatches { display: flex; gap: 10px; }
.swatch {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  border: 2px solid var(--paper);
  outline: 1px solid var(--rule);
  cursor: pointer;
  padding: 0;
}
.swatch--navy { background: var(--navy); }
.swatch--charcoal { background: var(--charcoal); }
.swatch--bone { background: var(--bone); }
.swatch[aria-pressed="true"] { outline: 2px solid var(--ink); }

.sizes { display: flex; flex-wrap: wrap; gap: 8px; }
.size {
  min-width: 56px;
  height: 42px;
  border: 1px solid var(--rule);
  background: var(--paper);
  border-radius: 8px;
  font-size: 14px;
  cursor: pointer;
}
.size:hover { border-color: var(--ink); }
.size--selected { border-color: var(--ink); border-width: 2px; }

.pdp__bullets {
  margin: 32px 0 0;
  padding: 0;
  list-style: none;
  font-size: 14px;
  color: var(--ink-dim);
  border-top: 1px solid var(--rule);
  padding-top: 24px;
}
.pdp__bullets li { padding: 6px 0; }

/* Footer */
.site-footer {
  border-top: 1px solid var(--rule);
  padding: 48px 0;
  margin-top: 64px;
  background: var(--paper-warm);
}
.site-footer__inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 24px;
  flex-wrap: wrap;
}
.footer-brand {
  font-weight: 700;
  font-size: 18px;
  display: inline-flex;
  align-items: baseline;
  gap: 6px;
  margin: 0;
}
.footer-note {
  font-size: 13px;
  color: var(--ink-faint);
  margin: 0;
}
.footer-note a { color: var(--green); }

/* Responsive */
@media (max-width: 760px) {
  .primary-nav { display: none; }
  .hero { padding: 56px 0 72px; }
  .product-grid, .story { padding: 64px 0; }
  .pdp { grid-template-columns: 1fr; gap: 32px; }
  .pdp__title { font-size: 32px; }
}