/* ================================================================
   ABA Claims — shared site styles
   Tokens, type, primitives. Each homepage variant adds its own look.
   ================================================================ */

:root {
  /* Warm neutrals */
  --paper: #FBF8F1;
  --paper-2: #F4EFE2;
  --ink: #1A1A1A;
  --ink-2: #2C2A26;
  --ink-muted: #6B6862;
  --ink-light: #918D85;
  --line: #E8E3D5;
  --line-soft: #F0EBDD;
  --surface: #FFFFFF;

  /* Brand — warm but professional */
  --amber: #C8881C;       /* primary action / accent */
  --amber-deep: #8C5E10;
  --amber-soft: #FBEFCF;
  --honey: #E6B23B;
  --olive: #6B7A3F;
  --sage: #C4D08F;
  --terracotta: #BC5A3C;
  --sky: #6E8FA8;
  --plum: #6B4570;

  /* Type */
  --serif: "Fraunces", "Cormorant Garamond", Georgia, serif;
  --sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", system-ui, sans-serif;
  --mono: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, monospace;

  /* Scale */
  --radius-sm: 6px;
  --radius: 12px;
  --radius-lg: 20px;
  --radius-xl: 28px;

  --shadow-sm: 0 1px 2px rgba(40, 30, 10, 0.04), 0 1px 3px rgba(40, 30, 10, 0.06);
  --shadow: 0 4px 12px rgba(40, 30, 10, 0.06), 0 8px 24px rgba(40, 30, 10, 0.04);
  --shadow-lg: 0 12px 40px rgba(40, 30, 10, 0.08), 0 24px 60px rgba(40, 30, 10, 0.05);

  --container: 1200px;
  --container-narrow: 880px;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--sans);
  background: var(--paper);
  color: var(--ink);
  font-size: 16px;
  line-height: 1.55;
  font-feature-settings: "ss01", "cv11";
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

img { max-width: 100%; height: auto; display: block; }
button { font: inherit; cursor: pointer; }
a { color: inherit; }

.container { max-width: var(--container); margin: 0 auto; padding: 0 32px; }
.container-narrow { max-width: var(--container-narrow); margin: 0 auto; padding: 0 32px; }

/* ============ NAVIGATION ============ */
.nav {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(251, 248, 241, 0.85);
  backdrop-filter: saturate(140%) blur(12px);
  -webkit-backdrop-filter: saturate(140%) blur(12px);
  border-bottom: 1px solid var(--line);
}
.nav-inner {
  max-width: var(--container);
  margin: 0 auto;
  padding: 14px 32px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: var(--ink);
  white-space: nowrap;
  flex-shrink: 0;
}
.brand-mark {
  width: 28px;
  height: 28px;
  display: block;
}
.brand-name {
  font-family: var(--serif);
  font-weight: 600;
  font-size: 19px;
  letter-spacing: -0.01em;
  font-style: italic;
}
.brand-name b { font-style: normal; font-weight: 600; }
.nav-links {
  display: flex;
  align-items: center;
  gap: 28px;
  list-style: none;
}
.nav-links a {
  color: var(--ink-muted);
  text-decoration: none;
  font-size: 14.5px;
  font-weight: 500;
  transition: color 0.15s;
}
.nav-links a:hover { color: var(--ink); }
.nav-links a.active { color: var(--ink); }
.nav-cta {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 10px 18px;
  background: var(--ink);
  color: var(--paper);
  border-radius: 999px;
  text-decoration: none;
  font-size: 14px;
  font-weight: 500;
  transition: background 0.2s;
}
.nav-cta:hover { background: var(--ink-2); }
.nav-toggle { display: none; background: none; border: 0; padding: 6px; }
@media (max-width: 820px) {
  .nav-links, .nav-cta { display: none; }
  .nav-toggle { display: inline-flex; }
}

/* ============ BUTTONS ============ */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 24px;
  border-radius: 999px;
  font-weight: 500;
  font-size: 15px;
  text-decoration: none;
  border: 1px solid transparent;
  transition: all 0.18s;
  white-space: nowrap;
}
.btn-primary {
  background: var(--ink);
  color: var(--paper);
}
.btn-primary:hover { background: var(--amber-deep); }
.btn-secondary {
  background: transparent;
  color: var(--ink);
  border-color: var(--ink);
}
.btn-secondary:hover { background: var(--ink); color: var(--paper); }
.btn-ghost {
  background: transparent;
  color: var(--ink);
  padding-left: 8px;
  padding-right: 8px;
}
.btn-ghost:hover { color: var(--amber-deep); }
.btn-arrow::after {
  content: "→";
  display: inline-block;
  transition: transform 0.2s;
}
.btn:hover .btn-arrow::after,
.btn-arrow:hover::after { transform: translateX(3px); }

/* ============ TYPE PRIMITIVES ============ */
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--amber-deep);
}
.eyebrow::before {
  content: "";
  width: 16px;
  height: 1px;
  background: var(--amber-deep);
}
.serif { font-family: var(--serif); font-weight: 400; font-style: italic; }

/* ============ FOOTER ============ */
.footer {
  background: var(--ink);
  color: var(--paper);
  padding: 80px 0 40px;
  margin-top: 80px;
}
.footer-inner {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 32px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr 1fr;
  gap: 48px;
  margin-bottom: 56px;
}
@media (max-width: 820px) {
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 36px; }
}
.footer-brand h3 {
  font-family: var(--serif);
  font-style: italic;
  font-weight: 500;
  font-size: 26px;
  margin-bottom: 12px;
  letter-spacing: -0.01em;
}
.footer-brand p {
  color: rgba(251, 248, 241, 0.65);
  font-size: 14.5px;
  line-height: 1.6;
  max-width: 320px;
}
.footer-col h4 {
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--honey);
  margin-bottom: 18px;
}
.footer-col ul { list-style: none; }
.footer-col li { margin-bottom: 10px; }
.footer-col a {
  color: rgba(251, 248, 241, 0.75);
  text-decoration: none;
  font-size: 14.5px;
  transition: color 0.15s;
}
.footer-col a:hover { color: var(--paper); }
.footer-bottom {
  border-top: 1px solid rgba(251, 248, 241, 0.12);
  padding-top: 28px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 13px;
  color: rgba(251, 248, 241, 0.5);
  flex-wrap: wrap;
  gap: 16px;
}
.footer-meta {
  display: inline-flex;
  align-items: center;
  gap: 14px;
}
.footer-meta .pill {
  padding: 4px 10px;
  border: 1px solid rgba(251, 248, 241, 0.18);
  border-radius: 999px;
  font-size: 11.5px;
  letter-spacing: 0.04em;
  color: rgba(251, 248, 241, 0.75);
}

/* ============ COMMON SECTIONS ============ */
.section { padding: 96px 0; }
.section-tight { padding: 64px 0; }

.section-head {
  max-width: 760px;
  margin: 0 auto 56px;
  text-align: center;
}
.section-head h2 {
  font-family: var(--serif);
  font-weight: 400;
  font-size: clamp(36px, 4vw, 52px);
  line-height: 1.1;
  letter-spacing: -0.015em;
  margin-top: 18px;
  margin-bottom: 16px;
}
.section-head h2 em { font-style: italic; color: var(--amber-deep); }
.section-head p {
  font-size: 17px;
  color: var(--ink-muted);
  line-height: 1.6;
  max-width: 580px;
  margin: 0 auto;
}

/* ============ COLOR BLOBS (decorative) ============ */
.blob {
  position: absolute;
  border-radius: 50%;
  filter: blur(60px);
  opacity: 0.45;
  pointer-events: none;
  z-index: 0;
}
.blob-amber { background: var(--honey); }
.blob-sage  { background: var(--sage); }
.blob-sky   { background: var(--sky); }
.blob-terra { background: var(--terracotta); opacity: 0.25; }

/* ============ EINSTEIN-TILE LOGO MARK ============ */
/* The "hat" einstein tile — 13-sided aperiodic monotile.
   Coordinates derived from the kite-based construction. */
.einstein-tile {
  fill: currentColor;
}

/* ============ UTIL ============ */
.text-amber { color: var(--amber-deep); }
.text-muted { color: var(--ink-muted); }
.bg-paper-2 { background: var(--paper-2); }
.bg-surface { background: var(--surface); }
.relative { position: relative; }
.overflow-hidden { overflow: hidden; }