/* ==========================================================================
   Example — Shared Design System
   Premium, minimal, confident. Warm neutral palette.
   Every page links to this file; do not redefine these tokens locally.
   ========================================================================== */

/* --------------------------------------------------------------------------
   1. DESIGN TOKENS
   -------------------------------------------------------------------------- */
:root {
  /* Palette — warm neutrals */
  --color-bg:        #f7f4ef;
  --color-bg-alt:    #efeae1;
  --color-surface:   #fffdf9;
  --color-ink:       #22201d;
  --color-ink-soft:  #55504a;
  --color-muted:     #6c655c;
  --color-line:      #ddd6ca;
  --color-line-soft: #e9e3d9;

  /* Accent — warm, restrained */
  --color-accent:      #a8642a;
  --color-accent-dark: #864c1c;
  --color-accent-soft: #f0e2d1;
  --color-on-accent:   #fffdf9;

  /* Type scale */
  --font-sans: "Inter", "Helvetica Neue", Arial, system-ui, -apple-system, sans-serif;
  --font-serif: "Georgia", "Times New Roman", serif;
  --font-mono: ui-monospace, "SF Mono", Menlo, Consolas, monospace;

  --text-xs:   0.75rem;   /* 12 */
  --text-sm:   0.875rem;  /* 14 */
  --text-base: 1rem;      /* 16 */
  --text-lg:   1.125rem;  /* 18 */
  --text-xl:   1.375rem;  /* 22 */
  --text-2xl:  1.75rem;   /* 28 */
  --text-3xl:  2.25rem;   /* 36 */
  --text-4xl:  3rem;      /* 48 */
  --text-5xl:  4rem;      /* 64 */

  --leading-tight: 1.15;
  --leading-snug:  1.35;
  --leading-body:  1.7;

  --tracking-tight: -0.02em;
  --tracking-wide:  0.14em;

  --weight-regular: 400;
  --weight-medium:  500;
  --weight-semi:    600;
  --weight-bold:    700;

  /* Spacing scale (4px base) */
  --space-1:  0.25rem;
  --space-2:  0.5rem;
  --space-3:  0.75rem;
  --space-4:  1rem;
  --space-5:  1.5rem;
  --space-6:  2rem;
  --space-7:  3rem;
  --space-8:  4rem;
  --space-9:  6rem;
  --space-10: 8rem;

  /* Radii, shadow, borders */
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 18px;
  --radius-pill: 999px;

  --shadow-sm: 0 1px 2px rgba(34, 32, 29, 0.06);
  --shadow-md: 0 8px 24px rgba(34, 32, 29, 0.08);
  --shadow-lg: 0 24px 60px rgba(34, 32, 29, 0.12);

  --border: 1px solid var(--color-line);

  /* Layout */
  --container: 1120px;
  --container-narrow: 720px;
  --header-h: 72px;

  /* Motion */
  --ease-out: cubic-bezier(0.22, 1, 0.36, 1);
  --ease-in-out: cubic-bezier(0.65, 0, 0.35, 1);
  --dur-fast: 160ms;
  --dur: 260ms;
  --dur-slow: 520ms;

  --z-header: 100;
  --z-overlay: 200;
}

/* --------------------------------------------------------------------------
   2. RESET / BASE
   -------------------------------------------------------------------------- */
*,
*::before,
*::after { box-sizing: border-box; }

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

body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: var(--color-ink);
  background: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

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

a { color: inherit; text-decoration: none; }

button, input, textarea, select { font: inherit; color: inherit; }

h1, h2, h3, h4, h5, h6 {
  margin: 0 0 var(--space-4);
  font-weight: var(--weight-semi);
  line-height: var(--leading-tight);
  letter-spacing: var(--tracking-tight);
}

h1 { font-size: clamp(var(--text-3xl), 5vw, var(--text-5xl)); }
h2 { font-size: clamp(var(--text-2xl), 3.5vw, var(--text-3xl)); }
h3 { font-size: var(--text-xl); }
h4 { font-size: var(--text-lg); }

p { margin: 0 0 var(--space-4); }

:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 3px;
  border-radius: var(--radius-sm);
}

::selection { background: var(--color-accent-soft); color: var(--color-ink); }

.visually-hidden,
.sr-only {
  position: absolute !important;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0 0 0 0);
  white-space: nowrap; border: 0;
}

/* --------------------------------------------------------------------------
   3. LAYOUT PRIMITIVES
   -------------------------------------------------------------------------- */
.container {
  width: 100%;
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: var(--space-5);
}

.container-narrow { max-width: var(--container-narrow); }

.section { padding-block: var(--space-9); }
.section-sm { padding-block: var(--space-7); }
.section-alt { background: var(--color-bg-alt); }

.stack > * + * { margin-top: var(--space-4); }
.cluster { display: flex; flex-wrap: wrap; gap: var(--space-4); align-items: center; }

.eyebrow {
  font-size: var(--text-xs);
  font-weight: var(--weight-semi);
  letter-spacing: var(--tracking-wide);
  text-transform: uppercase;
  color: var(--color-accent-dark);
  margin-bottom: var(--space-4);
}

.lead {
  font-size: var(--text-lg);
  color: var(--color-ink-soft);
  line-height: var(--leading-snug);
  max-width: 60ch;
}

.text-muted { color: var(--color-muted); }

/* --------------------------------------------------------------------------
   4. BUTTONS
   -------------------------------------------------------------------------- */
.btn {
  --btn-bg: var(--color-accent);
  --btn-fg: var(--color-on-accent);
  --btn-border: transparent;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-6);
  font-size: var(--text-sm);
  font-weight: var(--weight-semi);
  letter-spacing: 0.01em;
  line-height: 1;
  color: var(--btn-fg);
  background: var(--btn-bg);
  border: 1px solid var(--btn-border);
  border-radius: var(--radius-pill);
  cursor: pointer;
  transition: transform var(--dur-fast) var(--ease-out),
              background-color var(--dur) var(--ease-out),
              border-color var(--dur) var(--ease-out),
              color var(--dur) var(--ease-out),
              box-shadow var(--dur) var(--ease-out);
}

.btn:hover { background: var(--color-accent-dark); transform: translateY(-1px); }
.btn:active { transform: translateY(0); }

.btn-secondary {
  --btn-bg: transparent;
  --btn-fg: var(--color-ink);
  --btn-border: var(--color-line);
}
.btn-secondary:hover {
  background: var(--color-surface);
  border-color: var(--color-ink);
  color: var(--color-ink);
}

.btn-ghost {
  --btn-bg: transparent;
  --btn-fg: var(--color-ink-soft);
  --btn-border: transparent;
  padding-inline: var(--space-3);
}
.btn-ghost:hover { background: var(--color-bg-alt); color: var(--color-ink); }

.btn-lg { padding: var(--space-4) var(--space-7); font-size: var(--text-base); }
.btn-sm { padding: var(--space-2) var(--space-5); font-size: var(--text-xs); }
.btn-block { width: 100%; }

/* --------------------------------------------------------------------------
   5. SITE HEADER / NAV
   -------------------------------------------------------------------------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: var(--z-header);
  background: color-mix(in srgb, var(--color-bg) 88%, transparent);
  backdrop-filter: saturate(140%) blur(12px);
  border-bottom: 1px solid var(--color-line-soft);
}

.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-5);
  min-height: var(--header-h);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
  font-size: var(--text-lg);
  font-weight: var(--weight-bold);
  letter-spacing: var(--tracking-tight);
  color: var(--color-ink);
}

.brand-mark {
  display: inline-grid;
  place-items: center;
  width: 34px;
  height: 34px;
  border-radius: var(--radius-md);
  background: var(--color-accent);
  color: var(--color-on-accent);
  font-size: var(--text-sm);
  font-weight: var(--weight-bold);
}

.site-nav ul {
  display: flex;
  align-items: center;
  gap: var(--space-6);
  margin: 0;
  padding: 0;
  list-style: none;
}

.site-nav a {
  position: relative;
  font-size: var(--text-sm);
  font-weight: var(--weight-medium);
  color: var(--color-ink-soft);
  transition: color var(--dur) var(--ease-out);
}
.site-nav a::after {
  content: "";
  position: absolute;
  left: 0; bottom: -6px;
  width: 100%; height: 2px;
  background: var(--color-accent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--dur) var(--ease-out);
}
.site-nav a:hover { color: var(--color-ink); }
.site-nav a:hover::after,
.site-nav a[aria-current="page"]::after { transform: scaleX(1); }
.site-nav a[aria-current="page"] { color: var(--color-ink); }

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  padding: 0;
  background: transparent;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-md);
  cursor: pointer;
}
.nav-toggle span {
  display: block;
  height: 2px;
  width: 18px;
  margin-inline: auto;
  background: var(--color-ink);
  transition: transform var(--dur) var(--ease-out),
              opacity var(--dur) var(--ease-out);
}
.nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* --------------------------------------------------------------------------
   6. SITE FOOTER
   -------------------------------------------------------------------------- */
.site-footer {
  margin-top: var(--space-9);
  background: var(--color-ink);
  color: #d9d3c9;
  padding-block: var(--space-8) var(--space-5);
}
.site-footer a { color: #d9d3c9; transition: color var(--dur) var(--ease-out); }
.site-footer a:hover { color: #fffdf9; }

.footer-grid {
  display: grid;
  grid-template-columns: 1.6fr repeat(3, 1fr);
  gap: var(--space-7);
}
.footer-brand .brand { color: #fffdf9; }
.footer-brand p {
  margin-top: var(--space-4);
  max-width: 34ch;
  font-size: var(--text-sm);
  color: #a79f93;
}

.footer-col h4 {
  font-size: var(--text-xs);
  letter-spacing: var(--tracking-wide);
  text-transform: uppercase;
  color: #a79f93;
  margin-bottom: var(--space-4);
}
.footer-col ul {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: var(--space-3);
  font-size: var(--text-sm);
}

.footer-bottom {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  margin-top: var(--space-8);
  padding-top: var(--space-5);
  border-top: 1px solid rgba(255, 253, 249, 0.12);
  font-size: var(--text-xs);
  color: #a79f93;
}

/* --------------------------------------------------------------------------
   7. CARDS / SURFACES
   -------------------------------------------------------------------------- */
.card {
  background: var(--color-surface);
  border: var(--border);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  box-shadow: var(--shadow-sm);
  transition: transform var(--dur) var(--ease-out),
              box-shadow var(--dur) var(--ease-out);
}
.card:hover { transform: translateY(-3px); box-shadow: var(--shadow-md); }

.grid { display: grid; gap: var(--space-6); }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }

/* --------------------------------------------------------------------------
   8. FORMS
   -------------------------------------------------------------------------- */
.input, .textarea, .select {
  width: 100%;
  padding: var(--space-3) var(--space-4);
  background: var(--color-surface);
  border: var(--border);
  border-radius: var(--radius-md);
  color: var(--color-ink);
  transition: border-color var(--dur) var(--ease-out),
              box-shadow var(--dur) var(--ease-out);
}
.input:focus, .textarea:focus, .select:focus {
  outline: none;
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px var(--color-accent-soft);
}
.label {
  display: block;
  margin-bottom: var(--space-2);
  font-size: var(--text-sm);
  font-weight: var(--weight-medium);
}

/* --------------------------------------------------------------------------
   9. MOTION UTILITIES
   -------------------------------------------------------------------------- */
.reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity var(--dur-slow) var(--ease-out),
              transform var(--dur-slow) var(--ease-out);
  will-change: opacity, transform;
}
.reveal.is-visible { opacity: 1; transform: none; }

.fade-up {
  animation: fade-up var(--dur-slow) var(--ease-out) both;
}
.fade-in {
  animation: fade-in var(--dur-slow) var(--ease-out) both;
}
@keyframes fade-up {
  from { opacity: 0; transform: translateY(20px); }
  to   { opacity: 1; transform: none; }
}
@keyframes fade-in {
  from { opacity: 0; }
  to   { opacity: 1; }
}

.marquee {
  display: flex;
  overflow: hidden;
  gap: var(--space-7);
  mask-image: linear-gradient(90deg, transparent, #000 8%, #000 92%, transparent);
}
.marquee > * {
  flex: none;
  animation: marquee 28s linear infinite;
}
@keyframes marquee {
  from { transform: translateX(0); }
  to   { transform: translateX(calc(-100% - var(--space-7))); }
}

.delay-1 { animation-delay: 80ms; }
.delay-2 { animation-delay: 160ms; }
.delay-3 { animation-delay: 240ms; }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }
  .reveal { opacity: 1; transform: none; }
}

/* --------------------------------------------------------------------------
   10. RESPONSIVE
   -------------------------------------------------------------------------- */
@media (max-width: 900px) {
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .grid-3 { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 720px) {
  .nav-toggle { display: flex; }

  .site-nav {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--color-surface);
    border-bottom: var(--border);
    box-shadow: var(--shadow-md);
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--dur) var(--ease-out);
  }
  .site-nav.is-open { max-height: 70vh; overflow: auto; }
  .site-nav ul {
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: var(--space-3) var(--space-5) var(--space-5);
  }
  .site-nav li { border-bottom: 1px solid var(--color-line-soft); }
  .site-nav a { display: block; padding: var(--space-4) 0; font-size: var(--text-base); }
  .site-nav a::after { display: none; }

  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; gap: var(--space-6); }
  :root { --header-h: 64px; }
  .section { padding-block: var(--space-7); }
}