/* =========================================================================
   CRNK Design System — Tokens
   All design decisions reference these custom properties.
   No hardcoded values outside this file.
   ========================================================================= */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&display=swap');

:root {
  /* ---------- Color: Brand ---------- */
  --color-brand-navy:        #1E3A5F;
  --color-brand-navy-hover:  #162D4A;
  --color-brand-gold:        #C9A84C;
  --color-brand-gold-hover:  #B8973D;
  --color-brand-white:       #FFFFFF;

  /* ---------- Color: Text ---------- */
  --color-text-primary:      #000000;       /* Body — 21:1 on white */
  --color-text-heading:      #1E3A5F;       /* Headings on white */
  --color-text-secondary:    #78899F;       /* 24px+ only (3.57:1) */
  --color-text-on-navy:      #FFFFFF;
  --color-text-on-navy-muted: rgba(255, 255, 255, 0.80);
  --color-text-on-navy-dim:   rgba(255, 255, 255, 0.60);

  /* ---------- Color: UI ---------- */
  --color-bg-page:      #FFFFFF;
  --color-bg-subtle:    #F5F5F3;
  --color-bg-navy:      #1E3A5F;
  --color-border:       #E2E2DE;
  --color-border-gold:  #C9A84C;
  --color-border-on-navy: rgba(255, 255, 255, 0.15);

  /* ---------- Color: Semantic ---------- */
  --color-success: #2E7D32;
  --color-error:   #C62828;
  --color-warning: #E65100;
  --color-info:    #1565C0;

  /* ---------- Typography: Family ---------- */
  --font-base: 'Inter', system-ui, -apple-system, sans-serif;
  --font-mono: ui-monospace, 'Courier New', monospace;

  /* ---------- Typography: Weight ---------- */
  --weight-regular:  400;
  --weight-medium:   500;
  --weight-semibold: 600;
  --weight-bold:     700;

  /* ---------- Typography: Scale (8-point, 18px body min) ---------- */
  --text-xs:   12px;  --lh-xs:   1.5;  /* @kind font */  /* legal */
  --text-sm:   14px;  --lh-sm:   1.5;  /* @kind font */  /* tags, metadata */
  --text-base: 18px;  --lh-base: 1.7;  /* @kind font */  /* body — MIN */
  --text-md:   20px;  --lh-md:   1.6;  /* @kind font */  /* lead paragraphs */
  --text-lg:   24px;  --lh-lg:   1.4;  /* @kind font */  /* H3, card titles */
  --text-xl:   32px;  --lh-xl:   1.3;  /* @kind font */  /* H2, section heads */
  --text-2xl:  40px;  --lh-2xl:  1.2;  /* @kind font */  /* H1, page heads */
  --text-3xl:  52px;  --lh-3xl:  1.1;  /* @kind font */  /* hero desktop */
  --text-4xl:  64px;  --lh-4xl:  1.05; /* @kind font */  /* hero large desktop */

  /* Eyebrow label — uppercase letter-spaced */
  --eyebrow-tracking: 0.12em;

  /* ---------- Spacing (8-point grid) ---------- */
  --space-1:  4px;
  --space-2:  8px;
  --space-3:  12px;
  --space-4:  16px;
  --space-5:  24px;
  --space-6:  32px;
  --space-7:  40px;
  --space-8:  48px;
  --space-9:  64px;
  --space-10: 80px;
  --space-11: 96px;
  --space-12: 128px;

  --section-py-desktop: 80px;
  --section-py-mobile:  48px;

  /* ---------- Layout ---------- */
  --container-max:     1200px;
  --container-pad:     24px;
  --grid-gutter:       24px;
  --bp-mobile:   375px;
  --bp-tablet:   768px;
  --bp-desktop:  1200px;
  --bp-wide:     1440px;

  /* ---------- Border radius ---------- */
  --radius-sm:   4px;
  --radius-md:   8px;     /* buttons */
  --radius-lg:   12px;    /* cards */
  --radius-xl:   16px;
  --radius-full: 9999px;  /* pills, badges */

  /* ---------- Shadow ---------- */
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.08);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.08);
  --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.10);

  /* ---------- Hero opacity tokens ---------- */
  --hero-grid-opacity:   0.10; /* @kind other */
  --hero-node-opacity:   0.18; /* @kind other */
  --hero-gold-opacity:   0.70; /* @kind other */

  /* ---------- Motion ---------- */
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1); /* @kind other */
  --dur-fast:  150ms; /* @kind other */
  --dur-base:  200ms; /* @kind other */
  --dur-slow:  400ms; /* @kind other */

  /* ---------- Component tokens ---------- */
  --nav-height: 72px;
  --btn-padding: 14px 28px;
  --btn-min-height: 48px;
  --card-padding: 32px;
  --accordion-padding: 24px;
}

/* =========================================================================
   Element defaults — minimal reset + semantic typography
   ========================================================================= */

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

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

body {
  margin: 0;
  font-family: var(--font-base);
  font-size: var(--text-base);
  line-height: var(--lh-base);
  color: var(--color-text-primary);
  background: var(--color-bg-page);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* ---------- Headings ---------- */
h1, h2, h3, h4, h5, h6 {
  margin: 0 0 var(--space-4);
  color: var(--color-text-heading);
  font-weight: var(--weight-bold);
  letter-spacing: -0.01em;
  text-wrap: balance;
}
h1 { font-size: var(--text-2xl); line-height: var(--lh-2xl); }
h2 { font-size: var(--text-xl);  line-height: var(--lh-xl); }
h3 { font-size: var(--text-lg);  line-height: var(--lh-lg); font-weight: var(--weight-semibold); }
h4 { font-size: var(--text-md);  line-height: var(--lh-md); font-weight: var(--weight-semibold); }

/* ---------- Body ---------- */
p {
  margin: 0 0 var(--space-4);
  max-width: 65ch;
  text-wrap: pretty;
}

p.lead {
  font-size: var(--text-md);
  line-height: var(--lh-md);
  color: var(--color-text-primary);
}

small {
  font-size: var(--text-sm);
  line-height: var(--lh-sm);
}

/* ---------- Eyebrow label ---------- */
.eyebrow {
  display: inline-block;
  font-size: var(--text-sm);
  font-weight: var(--weight-semibold);
  letter-spacing: var(--eyebrow-tracking);
  text-transform: uppercase;
  color: var(--color-brand-gold);
  margin-bottom: var(--space-3);
}

/* ---------- Hero scale (used inside .hero) ---------- */
.hero h1 {
  font-size: var(--text-3xl);
  line-height: var(--lh-3xl);
  color: var(--color-text-on-navy);
}
@media (min-width: 1200px) {
  .hero h1.hero-large { font-size: var(--text-4xl); line-height: var(--lh-4xl); }
}

/* ---------- Links ---------- */
a {
  color: var(--color-text-heading);
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-thickness: 1px;
  transition: color var(--dur-fast) var(--ease-out);
}
a:hover { color: var(--color-brand-gold); }

/* ---------- Lists ---------- */
ul, ol { margin: 0 0 var(--space-4); padding-left: var(--space-5); }
li + li { margin-top: var(--space-2); }

/* ---------- Code (rare) ---------- */
code, kbd, samp {
  font-family: var(--font-mono);
  font-size: 0.95em;
}

/* ---------- Focus ring (accessibility — required) ---------- */
:focus-visible {
  outline: 2px solid var(--color-brand-gold);
  outline-offset: 2px;
  border-radius: var(--radius-sm);
}

/* ---------- Container ---------- */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding-left: var(--container-pad);
  padding-right: var(--container-pad);
}

/* ---------- Section padding ---------- */
.section { padding-top: var(--section-py-mobile); padding-bottom: var(--section-py-mobile); }
@media (min-width: 768px) {
  .section { padding-top: var(--section-py-desktop); padding-bottom: var(--section-py-desktop); }
}
.section--subtle { background: var(--color-bg-subtle); }
.section--navy   { background: var(--color-bg-navy);   color: var(--color-text-on-navy); }
.section--navy h1, .section--navy h2, .section--navy h3, .section--navy h4 { color: var(--color-text-on-navy); }
.section--navy .eyebrow { color: var(--color-brand-gold); }

/* ---------- Buttons (canonical) ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  min-height: var(--btn-min-height);
  padding: var(--btn-padding);
  font-family: var(--font-base);
  font-size: var(--text-base);
  font-weight: var(--weight-semibold);
  line-height: 1;
  border-radius: var(--radius-md);
  border: 2px solid transparent;
  cursor: pointer;
  white-space: nowrap;
  text-decoration: none;
  transition:
    background-color var(--dur-fast) var(--ease-out),
    color            var(--dur-fast) var(--ease-out),
    border-color     var(--dur-fast) var(--ease-out);
}

.btn--primary {
  background: var(--color-brand-navy);
  border-color: var(--color-brand-gold);
  color: var(--color-text-on-navy);
}
.btn--primary:hover { background: var(--color-brand-navy-hover); color: var(--color-text-on-navy); }

.btn--secondary {
  background: transparent;
  border-color: var(--color-brand-navy);
  color: var(--color-brand-navy);
}
.btn--secondary:hover {
  background: var(--color-brand-navy);
  color: var(--color-text-on-navy);
}

.btn--on-navy {
  background: var(--color-brand-gold);
  border-color: var(--color-brand-gold);
  color: var(--color-brand-navy);
}
.btn--on-navy:hover {
  background: var(--color-brand-gold-hover);
  border-color: var(--color-brand-gold-hover);
  color: var(--color-brand-navy);
}

/* ---------- Card ---------- */
.card {
  background: var(--color-bg-page);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--card-padding);
  box-shadow: var(--shadow-md);
  transition: box-shadow var(--dur-base) var(--ease-out), transform var(--dur-base) var(--ease-out);
}
.card:hover { box-shadow: var(--shadow-lg); transform: translateY(-1px); }
.card--featured { border: 2px solid var(--color-border-gold); }

/* ---------- Badge / Pill ---------- */
.badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  padding: 4px 12px;
  font-size: var(--text-sm);
  font-weight: var(--weight-medium);
  border-radius: var(--radius-full);
  background: var(--color-bg-subtle);
  color: var(--color-brand-navy);
  border: 1px solid var(--color-border);
}
.badge--gold {
  background: transparent;
  border-color: var(--color-brand-gold);
  color: var(--color-brand-navy);
}

/* ---------- Form fields ---------- */
.field {
  display: block;
  width: 100%;
  padding: 14px 16px;
  font-family: var(--font-base);
  font-size: var(--text-base);
  line-height: 1.4;
  color: var(--color-text-primary);
  background: var(--color-bg-page);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  transition: border-color var(--dur-fast) var(--ease-out);
}
.field:hover { border-color: var(--color-text-secondary); }
.field:focus { outline: 2px solid var(--color-brand-gold); outline-offset: 1px; border-color: var(--color-brand-navy); }
.field-label {
  display: block;
  font-size: var(--text-base);
  font-weight: var(--weight-medium);
  margin-bottom: var(--space-2);
  color: var(--color-text-primary);
}

/* ---------- Accordion (a11y for older users) ---------- */
.accordion-item {
  border-bottom: 1px solid var(--color-border);
}
.accordion-header {
  display: flex;
  align-items: center;
  width: 100%;
  padding: var(--accordion-padding);
  background: var(--color-bg-page);
  border: 0;
  cursor: pointer;
  text-align: left;
  font-family: var(--font-base);
  font-size: var(--text-base);
  transition: background var(--dur-fast) var(--ease-out);
}
.accordion-header:hover { background: var(--color-bg-subtle); }
.accordion-number {
  color: var(--color-brand-gold);
  font-weight: var(--weight-semibold);
  margin-right: var(--space-4);
  min-width: 32px;
}
.accordion-title {
  flex: 1;
  color: var(--color-brand-navy);
  font-weight: var(--weight-semibold);
}
.accordion-chevron {
  color: var(--color-brand-gold);
  transition: transform var(--dur-base) var(--ease-out);
}
.accordion-item[data-open="true"] .accordion-chevron { transform: rotate(180deg); }
.accordion-body {
  padding: 0 var(--accordion-padding) var(--accordion-padding) calc(var(--accordion-padding) + 32px + var(--space-4));
}

/* ---------- Utility text ---------- */
.text-secondary { color: var(--color-text-secondary); }   /* 24px+ only */
.text-on-navy-muted { color: var(--color-text-on-navy-muted); }