/* style.css — FDC brand design tokens + shared component styles */

@import url('https://fonts.googleapis.com/css2?family=Playfair+Display:ital,wght@0,400;0,500;0,600;0,700;0,900;1,400;1,700&family=DM+Sans:wght@300;400;500;600;700&family=DM+Mono:wght@400;500&display=swap');

:root {
  /* ---------- Type scale (fluid clamp) ---------- */
  --text-xs: clamp(0.75rem, 0.7rem + 0.25vw, 0.875rem);
  --text-sm: clamp(0.875rem, 0.8rem + 0.35vw, 1rem);
  --text-base: clamp(1rem, 0.95rem + 0.25vw, 1.125rem);
  --text-lg: clamp(1.125rem, 1rem + 0.75vw, 1.5rem);
  --text-xl: clamp(1.5rem, 1.2rem + 1.25vw, 2.25rem);
  --text-2xl: clamp(2rem, 1.2rem + 2.5vw, 3.25rem);
  --text-3xl: clamp(2.5rem, 1rem + 4vw, 4.5rem);
  --text-hero: clamp(2.75rem, 1rem + 5.5vw, 5.5rem);

  /* ---------- 4px spacing system ---------- */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;
  --space-24: 6rem;
  --space-32: 8rem;

  /* ---------- Radius ---------- */
  --radius-sm: 0.25rem;
  --radius-md: 0.375rem;
  --radius-lg: 0.5rem;
  --radius-xl: 0.75rem;
  --radius-full: 9999px;

  /* ---------- Transitions ---------- */
  --transition-interactive: 180ms cubic-bezier(0.16, 1, 0.3, 1);

  /* ---------- Content widths ---------- */
  --content-narrow: 640px;
  --content-default: 1080px;
  --content-wide: 1240px;
  --content-full: 100%;

  /* ---------- Fonts ---------- */
  --font-display: 'Playfair Display', Georgia, serif;
  --font-body: 'DM Sans', 'Helvetica Neue', sans-serif;
  --font-mono: 'DM Mono', 'Courier New', monospace;
}

/* ============ LIGHT MODE (default) — cream surfaces / navy text ============ */
:root,
[data-theme='light'] {
  --color-bg: #f5f0e8;
  --color-surface: #fffdfa;
  --color-surface-2: #ece5d6;
  --color-surface-offset: #ece5d6;
  --color-surface-dynamic: #e3dac8;
  --color-divider: rgba(11, 17, 32, 0.1);
  --color-border: rgba(11, 17, 32, 0.14);

  --color-text: #0b1120;
  --color-text-muted: #4a4f5c;
  --color-text-faint: #8a8d96;
  --color-text-inverse: #f5f0e8;

  --color-navy: #0b1120;
  --color-navy-2: #111827;
  --color-navy-3: #1a2540;

  --color-primary: #a3822f;
  --color-primary-hover: #8a6c26;
  --color-primary-active: #705620;
  --color-primary-highlight: #ece0c3;

  --color-gold: #a3822f;
  --color-gold-soft: #c9a84c;

  --color-error: #a13544;
  --color-error-highlight: #f0d9db;
  --color-success: #3f7a4a;
  --color-success-highlight: #dbe9dc;
  --color-warning: #94601b;
  --color-warning-highlight: #eee0c9;

  --shadow-sm: 0 1px 2px rgba(11, 17, 32, 0.06);
  --shadow-md: 0 4px 16px rgba(11, 17, 32, 0.09);
  --shadow-lg: 0 16px 40px rgba(11, 17, 32, 0.14);

  --on-navy-text: #f5f0e8;
  --on-navy-muted: #d4cfc5;
  --on-navy-faint: #8a8d96;
  --on-navy-line: rgba(201, 168, 76, 0.22);
}

/* ============ DARK MODE — navy surfaces / cream text ============ */
[data-theme='dark'] {
  --color-bg: #0b1120;
  --color-surface: #111827;
  --color-surface-2: #1a2540;
  --color-surface-offset: #151d33;
  --color-surface-dynamic: #1f2a48;
  --color-divider: rgba(201, 168, 76, 0.16);
  --color-border: rgba(201, 168, 76, 0.22);

  --color-text: #f5f0e8;
  --color-text-muted: #d4cfc5;
  --color-text-faint: #8a8d96;
  --color-text-inverse: #0b1120;

  --color-navy: #0b1120;
  --color-navy-2: #111827;
  --color-navy-3: #1a2540;

  --color-primary: #e8c97a;
  --color-primary-hover: #f2d998;
  --color-primary-active: #c9a84c;
  --color-primary-highlight: #3a3220;

  --color-gold: #e8c97a;
  --color-gold-soft: #c9a84c;

  --color-error: #d16a78;
  --color-error-highlight: #3a2226;
  --color-success: #7fbb8b;
  --color-success-highlight: #223a27;
  --color-warning: #d9a662;
  --color-warning-highlight: #3a2f1c;

  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 16px 40px rgba(0, 0, 0, 0.55);

  --on-navy-text: #f5f0e8;
  --on-navy-muted: #d4cfc5;
  --on-navy-faint: #8a8d96;
  --on-navy-line: rgba(201, 168, 76, 0.22);
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme]) {
    --color-bg: #0b1120;
    --color-surface: #111827;
    --color-surface-2: #1a2540;
    --color-surface-offset: #151d33;
    --color-surface-dynamic: #1f2a48;
    --color-divider: rgba(201, 168, 76, 0.16);
    --color-border: rgba(201, 168, 76, 0.22);
    --color-text: #f5f0e8;
    --color-text-muted: #d4cfc5;
    --color-text-faint: #8a8d96;
    --color-text-inverse: #0b1120;
    --color-primary: #e8c97a;
    --color-primary-hover: #f2d998;
    --color-primary-active: #c9a84c;
    --color-primary-highlight: #3a3220;
    --color-gold: #e8c97a;
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 16px 40px rgba(0, 0, 0, 0.55);
  }
}

/* ============================================================
   BASE TYPOGRAPHY
   ============================================================ */
body {
  font-family: var(--font-body);
}

h1,
h2,
h3,
h4 {
  font-family: var(--font-display);
  font-weight: 700;
  letter-spacing: -0.01em;
}

.eyebrow {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--color-primary);
  margin-bottom: var(--space-5);
}
.eyebrow::before {
  content: '';
  display: block;
  width: 28px;
  height: 1px;
  background: var(--color-primary);
  flex-shrink: 0;
}

.section-num {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.15em;
  color: var(--color-primary);
}

/* ============================================================
   LAYOUT PRIMITIVES
   ============================================================ */
.container {
  max-width: var(--content-default);
  margin-inline: auto;
  padding-inline: var(--space-6);
}
.container-wide {
  max-width: var(--content-wide);
  margin-inline: auto;
  padding-inline: var(--space-6);
}
.container-narrow {
  max-width: var(--content-narrow);
  margin-inline: auto;
  padding-inline: var(--space-6);
}

main {
  overflow-x: hidden;
}

section {
  padding-block: clamp(var(--space-16), 8vw, var(--space-24));
}

.section-tight {
  padding-block: clamp(var(--space-10), 5vw, var(--space-16));
}

.section-navy {
  background: var(--color-navy);
  color: var(--on-navy-text);
}

@media (max-width: 640px) {
  section {
    padding-block: var(--space-12);
  }
}

/* ============================================================
   HEADER / NAV
   ============================================================ */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: color-mix(in oklab, var(--color-navy) 96%, transparent);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--on-navy-line);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-6);
  padding-block: var(--space-4);
  max-width: var(--content-wide);
  margin-inline: auto;
  padding-inline: var(--space-6);
}

.brand {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  color: var(--on-navy-text);
  text-decoration: none;
  flex-shrink: 0;
}
.brand-mark {
  width: 38px;
  height: 38px;
  flex-shrink: 0;
  color: var(--color-gold-soft);
}
.brand-word {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: var(--text-lg);
  line-height: 1.1;
  color: var(--on-navy-text);
}
.brand-sub {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.62rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-gold-soft);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: var(--space-6);
  list-style: none;
}
.nav-links a {
  font-family: var(--font-body);
  font-size: var(--text-sm);
  color: var(--on-navy-muted);
  text-decoration: none;
  padding: var(--space-2) 0;
  position: relative;
}
.nav-links a:hover,
.nav-links a:focus-visible {
  color: var(--on-navy-text);
}
.nav-links a[aria-current='page'] {
  color: var(--color-gold-soft);
}
.nav-links a[aria-current='page']::after {
  content: '';
  position: absolute;
  left: 0;
  right: 0;
  bottom: -6px;
  height: 1px;
  background: var(--color-gold-soft);
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.theme-toggle {
  width: 40px;
  height: 40px;
  min-width: 44px;
  min-height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-gold-soft);
  border: 1px solid var(--on-navy-line);
  border-radius: var(--radius-full);
  flex-shrink: 0;
}
.theme-toggle:hover {
  background: rgba(201, 168, 76, 0.1);
}

.nav-toggle {
  display: none;
  width: 44px;
  height: 44px;
  align-items: center;
  justify-content: center;
  color: var(--on-navy-text);
  flex-shrink: 0;
}

@media (max-width: 900px) {
  .nav-links {
    position: fixed;
    inset: 72px 0 0 0;
    height: calc(100dvh - 72px);
    background: var(--color-navy);
    flex-direction: column;
    align-items: stretch;
    justify-content: flex-start;
    gap: 0;
    padding: var(--space-6);
    transform: translateX(100%);
    transition: transform 320ms cubic-bezier(0.16, 1, 0.3, 1);
    overflow-y: auto;
  }
  .nav-links.is-open {
    transform: translateX(0);
  }
  .nav-links li {
    border-bottom: 1px solid var(--on-navy-line);
  }
  .nav-links a {
    display: block;
    padding: var(--space-4) var(--space-2);
    font-size: var(--text-lg);
  }
  .nav-toggle {
    display: flex;
  }
}

/* ============================================================
   BUTTONS
   ============================================================ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-6);
  min-height: 44px;
  font-family: var(--font-body);
  font-size: var(--text-sm);
  font-weight: 600;
  text-decoration: none;
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
  white-space: nowrap;
}

.btn-primary {
  background: var(--color-gold-soft);
  color: #0b1120;
}
.btn-primary:hover {
  background: color-mix(in oklab, var(--color-gold-soft) 85%, white);
  box-shadow: var(--shadow-md);
}

.btn-outline {
  background: transparent;
  border: 1px solid var(--on-navy-line);
  color: var(--on-navy-text);
}
.btn-outline:hover {
  border-color: var(--color-gold-soft);
  color: var(--color-gold-soft);
}

.btn-ghost {
  background: transparent;
  color: var(--color-text);
  border: 1px solid var(--color-border);
}
.btn-ghost:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
}

.btn-block {
  width: 100%;
}

/* ============================================================
   FOOTER
   ============================================================ */
.site-footer {
  background: var(--color-navy);
  color: var(--on-navy-text);
  border-top: 1px solid var(--on-navy-line);
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.3fr 1fr 1fr 1fr;
  gap: var(--space-10);
  padding-block: clamp(var(--space-12), 6vw, var(--space-20));
}
@media (max-width: 900px) {
  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: var(--space-8);
  }
}
@media (max-width: 560px) {
  .footer-grid {
    grid-template-columns: 1fr;
    gap: var(--space-8);
  }
}

.footer-brand p {
  color: var(--on-navy-muted);
  font-size: var(--text-sm);
  max-width: 34ch;
  margin-top: var(--space-4);
}
.footer-heading {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-gold-soft);
  margin-bottom: var(--space-4);
  display: block;
}
.footer-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  list-style: none;
}
.footer-list a,
.footer-list span {
  color: var(--on-navy-muted);
  font-size: var(--text-sm);
  text-decoration: none;
}
.footer-list a:hover {
  color: var(--color-gold-soft);
}

.footer-bottom {
  border-top: 1px solid var(--on-navy-line);
  padding-block: var(--space-6);
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3) var(--space-6);
  align-items: center;
  justify-content: space-between;
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--on-navy-faint);
}
.footer-bottom a {
  color: var(--on-navy-faint);
  text-decoration: none;
}
.footer-bottom a:hover {
  color: var(--color-gold-soft);
}
.footer-legal-links {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-4);
}

/* ============================================================
   CARDS (shared)
   ============================================================ */
.card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-8);
}

.badge {
  display: inline-flex;
  align-items: center;
  font-family: var(--font-mono);
  font-size: 0.62rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  padding: var(--space-1) var(--space-3);
  border-radius: var(--radius-full);
  border: 1px solid currentColor;
}

/* ============================================================
   FORMS
   ============================================================ */
.field {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  margin-bottom: var(--space-5);
}
.field label {
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-text);
}
.field input,
.field select,
.field textarea {
  width: 100%;
  padding: var(--space-3) var(--space-4);
  min-height: 44px;
  font-size: var(--text-base);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: var(--color-surface);
  color: var(--color-text);
}
.field textarea {
  min-height: 140px;
  resize: vertical;
}
.field input:focus-visible,
.field select:focus-visible,
.field textarea:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 1px;
}
.field-error {
  font-size: var(--text-xs);
  color: var(--color-error);
  min-height: 1em;
}
.field.has-error input,
.field.has-error select,
.field.has-error textarea {
  border-color: var(--color-error);
}
.field-hint {
  font-size: var(--text-xs);
  color: var(--color-text-faint);
}
fieldset.field {
  border: none;
  padding: 0;
  margin: 0 0 var(--space-5) 0;
}
fieldset.field legend {
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-text);
  padding: 0;
  margin-bottom: var(--space-3);
}
.field-hint-inline {
  font-size: var(--text-xs);
  font-weight: 400;
  color: var(--color-text-faint);
}
.checkbox-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-2) var(--space-4);
}
@media (max-width: 640px) {
  .checkbox-grid { grid-template-columns: 1fr; }
}
.checkbox-option {
  display: flex;
  align-items: flex-start;
  gap: var(--space-2);
  font-size: var(--text-sm);
  font-weight: 400;
  color: var(--color-text);
  cursor: pointer;
  padding: var(--space-2) var(--space-3);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: var(--color-surface);
}
.checkbox-option input {
  width: auto;
  min-height: 0;
  margin-top: 3px;
  accent-color: var(--color-primary);
  flex-shrink: 0;
}
.checkbox-option:has(input:checked) {
  border-color: var(--color-primary);
  background: color-mix(in srgb, var(--color-primary) 8%, var(--color-surface));
}
.urgency-options {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-3);
}
@media (max-width: 640px) {
  .urgency-options { grid-template-columns: 1fr; }
}
.urgency-option {
  display: flex;
  align-items: flex-start;
  gap: var(--space-2);
  padding: var(--space-3);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: var(--color-surface);
  cursor: pointer;
  font-size: var(--text-sm);
}
.urgency-option input {
  width: auto;
  min-height: 0;
  margin-top: 3px;
  accent-color: var(--color-primary);
  flex-shrink: 0;
}
.urgency-option:has(input:checked) {
  border-color: var(--color-primary);
  background: color-mix(in srgb, var(--color-primary) 8%, var(--color-surface));
}

/* ============================================================
   UTILITIES
   ============================================================ */
.text-muted {
  color: var(--color-text-muted);
}
.mono {
  font-family: var(--font-mono);
}
.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
}
.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  background: var(--color-gold-soft);
  color: #0b1120;
  padding: var(--space-2) var(--space-4);
  z-index: 200;
  font-size: var(--text-sm);
  font-weight: 600;
}
.skip-link:focus {
  left: var(--space-4);
  top: var(--space-4);
}

hr.divider {
  border: none;
  border-top: 1px solid var(--color-divider);
  margin-block: var(--space-8);
}