/* ============================================================
   Base — reset, typography, layout primitives, buttons
   ============================================================ */

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

html, body { margin: 0; padding: 0; }

html {
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-sans);
  font-size: var(--type-body-md-size);
  line-height: var(--type-body-md-lh);
  color: var(--on-surface);
  background: var(--surface);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

img, svg, video, canvas { display: block; max-width: 100%; height: auto; }

a {
  color: inherit;
  text-decoration: none;
  transition: color 180ms var(--ease-soft), opacity 180ms var(--ease-soft);
}

p { margin: 0 0 1em; }
p:last-child { margin-bottom: 0; }

h1, h2, h3, h4, h5, h6 {
  margin: 0;
  font-family: var(--font-serif);
  font-weight: 400;
  letter-spacing: 0;
  color: var(--on-surface);
}

/* ---- Type utilities ---- */
.t-eyebrow {
  font-family: var(--font-sans);
  font-size: var(--type-label-caps-size);
  font-weight: var(--type-label-caps-weight);
  line-height: var(--type-label-caps-lh);
  letter-spacing: var(--type-label-caps-track);
  text-transform: uppercase;
  color: var(--on-surface-variant);
}

.t-display {
  font-family: var(--font-serif);
  font-size: var(--type-display-lg-size);
  line-height: var(--type-display-lg-lh);
  letter-spacing: var(--type-display-lg-track);
  font-weight: 400;
}

.t-headline {
  font-family: var(--font-serif);
  font-size: var(--type-headline-md-size);
  line-height: var(--type-headline-md-lh);
  font-weight: 400;
}

.t-headline-sm {
  font-family: var(--font-serif);
  font-size: var(--type-headline-sm-size);
  line-height: var(--type-headline-sm-lh);
  font-weight: 400;
}

.t-body-lg {
  font-size: var(--type-body-lg-size);
  line-height: var(--type-body-lg-lh);
  letter-spacing: var(--type-body-lg-track);
  color: var(--on-surface-variant);
}

.t-body { font-size: var(--type-body-md-size); line-height: var(--type-body-md-lh); }

/* ---- Layout primitives ---- */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

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

.section--tight { padding-block: 56px; }

.stack-sm > * + * { margin-top: 12px; }
.stack-md > * + * { margin-top: 24px; }
.stack-lg > * + * { margin-top: 48px; }

/* ---- Buttons ---- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  font-family: var(--font-sans);
  font-size: 0.95rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  padding: 14px 32px;
  border-radius: var(--radius);
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform 180ms var(--ease-soft),
              background-color 180ms var(--ease-soft),
              color 180ms var(--ease-soft),
              border-color 180ms var(--ease-soft),
              box-shadow 220ms var(--ease-soft);
  white-space: nowrap;
}

.btn--primary {
  background: var(--primary);
  color: var(--on-primary);
}
.btn--primary:hover {
  background: var(--primary-container);
  box-shadow: var(--shadow-2);
}

.btn--ghost {
  background: transparent;
  border-color: var(--outline-variant);
  color: var(--primary);
}
.btn--ghost:hover {
  border-color: var(--primary);
  background: var(--surface-container-low);
}

.btn--lg { padding: 16px 36px; font-size: 1rem; }

.btn .arrow {
  display: inline-block;
  transition: transform 200ms var(--ease-soft);
}
.btn:hover .arrow { transform: translateX(4px); }

/* ---- Header ---- */
.site-header {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 50;
  padding: 18px 0;
  background: rgba(250, 249, 247, 0.0);
  backdrop-filter: blur(0);
  transition: background 280ms var(--ease-soft), backdrop-filter 280ms var(--ease-soft), box-shadow 280ms var(--ease-soft);
}
.site-header.is-scrolled {
  background: rgba(250, 249, 247, 0.82);
  backdrop-filter: saturate(140%) blur(14px);
  box-shadow: 0 1px 0 rgba(104, 89, 80, 0.06);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand {
  font-family: var(--font-serif);
  font-size: 1.35rem;
  letter-spacing: 0.01em;
  color: var(--on-surface);
}
.brand sup {
  font-family: var(--font-sans);
  font-size: 0.55rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--on-surface-variant);
  margin-left: 4px;
  vertical-align: 0.7em;
}

.nav-links {
  display: flex;
  gap: 28px;
  list-style: none;
  margin: 0;
  padding: 0;
}
.nav-links a {
  font-size: 0.875rem;
  letter-spacing: 0.04em;
  color: var(--on-surface-variant);
}
.nav-links a:hover { color: var(--primary); }

@media (max-width: 760px) {
  .nav-links { display: none; }
}

/* ---- Footer ---- */
.site-footer {
  background: var(--surface-container);
  padding: 64px 0 40px;
  color: var(--on-surface-variant);
}
.site-footer .container { display: grid; gap: 40px; grid-template-columns: 2fr 1fr 1fr; }
.site-footer h4 {
  font-family: var(--font-sans);
  font-size: var(--type-label-caps-size);
  font-weight: var(--type-label-caps-weight);
  letter-spacing: var(--type-label-caps-track);
  text-transform: uppercase;
  margin-bottom: 16px;
  color: var(--on-surface);
}
.site-footer ul { list-style: none; margin: 0; padding: 0; }
.site-footer li { margin: 0 0 8px; font-size: 0.95rem; }
.site-footer a:hover { color: var(--primary); }
.site-footer .legal {
  margin-top: 40px;
  padding-top: 24px;
  border-top: 1px solid var(--outline-variant);
  font-size: 0.8rem;
  text-align: center;
  grid-column: 1 / -1;
}

@media (max-width: 760px) {
  .site-footer .container { grid-template-columns: 1fr; }
}

/* ---- Reduced motion ---- */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}