/* ============================================================
   Ultimate Homes USA — colors_and_type.css
   Single source of CSS custom properties + utility classes.
   ============================================================ */

/* ---- 1. Font import ---- */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600&display=swap');

/* ---- 2. Tokens ---- */
:root {
  /* Core surfaces */
  --ink: #0E0E0E;
  --bone: #FAFAFA;
  --paper: #FFFFFF;
  --slate: #545454;

  /* Neutral scale */
  --neutral-50:  #FAFAFA;
  --neutral-100: #EAEAEA;
  --neutral-200: #C8C8C8;
  --neutral-400: #8A8A8A;
  --neutral-600: #545454;
  --neutral-800: #2A2A2A;
  --neutral-900: #0E0E0E;

  /* Semantic — functional only, never decorative */
  --error-fill:    #FCEBEB;
  --error-text:    #A82A2A;
  --success-fill:  #E8F1E9;
  --success-text:  #1F6B3A;

  /* Borders */
  --border-hairline: 0.5px solid rgba(14, 14, 14, 0.15);
  --border-emphasis: 1px solid #0E0E0E;
  --border-on-dark:  0.5px solid rgba(250, 250, 250, 0.2);

  /* Opacity steps for hierarchy */
  --opacity-muted:    0.6;
  --opacity-quiet:    0.4;
  --opacity-inactive: 0.5;

  /* Typography */
  --font-sans: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, sans-serif;

  --tracking-display: -0.04em;
  --tracking-h1:      -0.035em;
  --tracking-h2:      -0.030em;
  --tracking-h3:      -0.020em;
  --tracking-eyebrow: 0.12em;

  /* Spacing (8pt scale) */
  --space-1: 4px;
  --space-2: 8px;
  --space-3: 16px;
  --space-4: 24px;
  --space-5: 32px;
  --space-6: 48px;
  --space-7: 64px;
  --space-8: 96px;
  --space-9: 120px;

  /* Layout */
  --max-width:      1440px;
  --gutter:         24px;
  --page-margin:    80px;
  --page-margin-sm: 24px;

  /* Radius — mostly sharp */
  --radius-0:    0;
  --radius-sm:   4px;
  --radius-md:   8px;
  --radius-pill: 999px;

  /* Motion */
  --ease-reveal: cubic-bezier(0.2, 0, 0, 1);
  --ease-state:  cubic-bezier(0.4, 0, 0.2, 1);
  --dur-hover:   180ms;
  --dur-state:   320ms;
  --dur-reveal:  600ms;
}

/* ---- 3. Base ---- */
body {
  font-family: var(--font-sans);
  background: var(--bone);
  color: var(--ink);
  font-size: 16px;
  line-height: 1.625;
  font-weight: 400;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* ---- 4. Type scale (utility classes) ---- */
.t-display {
  font-size: clamp(40px, 5.5vw + 8px, 80px);
  line-height: 1.1;
  letter-spacing: var(--tracking-display);
  font-weight: 600;
}

.t-h1 {
  font-size: clamp(32px, 3.5vw + 8px, 56px);
  line-height: 1.2;
  letter-spacing: var(--tracking-h1);
  font-weight: 600;
}

.t-h2 {
  font-size: clamp(28px, 2.5vw + 8px, 40px);
  line-height: 1.2;
  letter-spacing: var(--tracking-h2);
  font-weight: 600;
}

.t-h3 {
  font-size: 24px;
  line-height: 1.33;
  letter-spacing: var(--tracking-h3);
  font-weight: 600;
}

.t-body-lg {
  font-size: 18px;
  line-height: 1.55;
  font-weight: 400;
}

.t-body {
  font-size: 16px;
  line-height: 1.625;
  font-weight: 400;
}

.t-small {
  font-size: 14px;
  line-height: 1.57;
  font-weight: 400;
}

.t-eyebrow {
  font-size: 11px;
  line-height: 1.4;
  letter-spacing: var(--tracking-eyebrow);
  text-transform: uppercase;
  font-weight: 500;
}

/* ---- 5. Surface utilities ---- */
.bg-ink   { background: var(--ink);   color: var(--bone); }
.bg-bone  { background: var(--bone);  color: var(--ink); }
.bg-paper { background: var(--paper); color: var(--ink); }

.text-muted    { opacity: var(--opacity-muted); }
.text-quiet    { opacity: var(--opacity-quiet); }
.text-inactive { opacity: var(--opacity-inactive); }

/* Tabular numerals — required for numeric alignment */
.num { font-variant-numeric: tabular-nums; }

/* ---- 6. Components ---- */

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 28px;
  border-radius: var(--radius-pill);
  font: 500 14px/1 var(--font-sans);
  letter-spacing: -0.01em;
  cursor: pointer;
  transition: opacity var(--dur-hover) var(--ease-state),
              transform var(--dur-hover) var(--ease-state);
  font-family: var(--font-sans);
}

.btn:hover  { opacity: 0.85; }
.btn:active { transform: scale(0.98); }

.btn-primary {
  background: var(--ink);
  color: var(--bone);
  border: 1px solid var(--ink);
}

.btn-secondary {
  background: var(--bone);
  color: var(--ink);
  border: 1px solid var(--ink);
}

/* Text link with arrow */
.link-arrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: inherit;
  text-decoration: none;
  font: 500 14px/1 var(--font-sans);
  letter-spacing: -0.01em;
}

.link-arrow .arrow {
  transition: transform var(--dur-hover) var(--ease-state);
}

.link-arrow:hover .arrow {
  transform: translateX(4px);
}

/* Project list row — signature pattern */
.row-project {
  display: grid;
  grid-template-columns: 50px 1fr 24px;
  align-items: center;
  padding: 22px 4px;
  border-bottom: var(--border-hairline);
  cursor: pointer;
  transition: opacity var(--dur-hover) var(--ease-state);
}

.row-project .num-marker {
  font-size: 13px;
  opacity: var(--opacity-quiet);
  font-variant-numeric: tabular-nums;
}

.row-project .row-title {
  font-size: 22px;
  font-weight: 600;
  letter-spacing: -0.025em;
}

.row-project.is-inactive { opacity: 0.5; }
.row-project.is-inactive:hover { opacity: 1; }

/* Hairline divider */
.hr {
  height: 0;
  border: 0;
  border-top: var(--border-hairline);
  margin: 0;
}

/* Card — info */
.card-info {
  background: var(--paper);
  border: var(--border-hairline);
  border-radius: 0;
  padding: 24px;
}

/* Focus ring */
:focus-visible {
  outline: 2px solid var(--ink);
  outline-offset: 2px;
}

/* ---- 7. Layout helpers ---- */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding-inline: var(--page-margin);
}

.section {
  padding-block: var(--space-9);
}

@media (max-width: 768px) {
  .container { padding-inline: var(--page-margin-sm); }
  .section   { padding-block: var(--space-8); }
}

/* ---- 8. Motion ---- */
.reveal {
  opacity: 0;
  transform: translateY(12px);
  transition:
    opacity var(--dur-reveal) var(--ease-reveal),
    transform var(--dur-reveal) var(--ease-reveal);
}

.reveal.is-visible {
  opacity: 1;
  transform: none;
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
}