/* ─────────────────────────────────────────────────────────────
   American Visa Guide — Design Tokens & Base Styles
   Fonts: Outfit (headings) + Plus Jakarta Sans (body/UI)
   Palette: Charcoal-blue primary · Steel-blue accent · Warm cream bg
   ───────────────────────────────────────────────────────────── */

@import url('https://fonts.googleapis.com/css2?family=Fraunces:ital,opsz,wght@0,9..144,400..700;1,9..144,400..700&family=Outfit:wght@400;500;600;700;800;900&family=Plus+Jakarta+Sans:ital,wght@0,300;0,400;0,500;0,600;0,700;1,400&display=swap');

/* ─── Light Mode Tokens ───────────────────────────────────── */
:root {
  /* — Brand: Navy — */
  --color-primary:          #2b3a42;
  --color-primary-hover:    #233038;
  --color-primary-active:   #1e2b32;
  --color-primary-subtle:   #e8eef1;
  --color-primary-border:   #a9c2cd;
  --color-primary-text:     #FFFFFF;

  /* — Accent: Steel blue (legacy "gold"/"accent" names kept) — */
  --color-accent:           #3e7188;
  --color-accent-hover:     #2f5a6e;
  --color-accent-subtle:    #edf4f8;
  --color-accent-border:    #a9cbd9;

  /* — Neutrals — */
  --color-bg:               #f4efe6;
  --color-bg-alt:           #ede8de;
  --color-surface:          #FDFAF3;
  --color-surface-raised:   #f7f2e9;
  --color-border:           #ddd6cb;
  --color-border-strong:    #a39c8e;

  /* — Text — */
  --color-text:             #1e1c17;
  --color-text-secondary:   #56524a;
  --color-text-muted:       #6a6560;
  --color-text-inverse:     #FFFFFF;

  /* — Status: Success — */
  --color-success:          #4a6b50;
  --color-success-subtle:   #e9f0e6;
  --color-success-border:   #a9c8ad;

  /* — Status: Warning — */
  --color-warning:          #875325;
  --color-warning-subtle:   #f7efdc;
  --color-warning-border:   #d9bb86;

  /* — Status: Info (Default card) — */
  --color-info:             #3e7188;
  --color-info-subtle:      #edf4f8;
  --color-info-border:      #a9cbd9;

  /* — Status: Tip (green-teal) — */
  --color-tip:              #3f5f45;
  --color-tip-subtle:       #e9f0e6;
  --color-tip-border:       #a9c8ad;

  /* — Destructive — */
  --color-destructive:      #9b3434;
  --color-destructive-subtle: #f8ece7;
  --color-destructive-border: #dfa9a0;
  --color-destructive-hover:  #7f2d2d;

  /* ─── Typography ─────────────────────────────────── */
  --font-display:   'Fraunces', Georgia, 'Times New Roman', serif;
  --font-ui:        'Outfit', system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
  --font-body:      'Plus Jakarta Sans', system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono:      'JetBrains Mono', 'Fira Code', Consolas, monospace;

  /* Font Sizes */
  --text-xs:    0.6875rem;  /* 11px */
  --text-sm:    0.8125rem;  /* 13px */
  --text-base:  1rem;       /* 16px */
  --text-md:    1.0625rem;  /* 17px */
  --text-lg:    1.1875rem;  /* 19px */
  --text-xl:    1.375rem;   /* 22px */
  --text-2xl:   1.75rem;    /* 28px */
  --text-3xl:   2.125rem;   /* 34px */
  --text-4xl:   2.75rem;    /* 44px */
  --text-5xl:   3.5rem;     /* 56px */

  /* Font Weights */
  --font-light:    300;
  --font-normal:   400;
  --font-medium:   500;
  --font-semibold: 600;
  --font-bold:     700;

  /* Line Heights */
  --leading-tight:   1.2;
  --leading-snug:    1.35;
  --leading-normal:  1.5;
  --leading-relaxed: 1.65;
  --leading-loose:   1.8;

  /* Letter Spacing */
  --tracking-tight:  -0.02em;
  --tracking-normal: 0em;
  --tracking-wide:   0.04em;
  --tracking-wider:  0.08em;

  /* ─── Spacing — 4px base ─────────────────────────── */
  --space-0:   0;
  --space-1:   0.25rem;    /*  4px */
  --space-2:   0.5rem;     /*  8px */
  --space-3:   0.75rem;    /* 12px */
  --space-4:   1rem;       /* 16px */
  --space-5:   1.25rem;    /* 20px */
  --space-6:   1.5rem;     /* 24px */
  --space-7:   1.75rem;    /* 28px */
  --space-8:   2rem;       /* 32px */
  --space-10:  2.5rem;     /* 40px */
  --space-12:  3rem;       /* 48px */
  --space-14:  3.5rem;     /* 56px */
  --space-16:  4rem;       /* 64px */
  --space-20:  5rem;       /* 80px */
  --space-24:  6rem;       /* 96px */

  /* ─── Border Radius ──────────────────────────────── */
  --radius-sm:    0.25rem;   /*  4px */
  --radius-md:    0.5rem;    /*  8px */
  --radius-lg:    0.75rem;   /* 12px */
  --radius-xl:    1rem;      /* 16px */
  --radius-2xl:   1.5rem;    /* 24px */
  --radius-full:  9999px;

  /* ─── Shadows ─────────────────────────────────────── */
  --shadow-xs:  0 1px 2px 0 rgba(30,28,23, 0.05);
  --shadow-sm:  0 1px 3px 0 rgba(30,28,23, 0.08),
                0 1px 2px -1px rgba(30,28,23, 0.05);
  --shadow-md:  0 4px 6px -1px rgba(30,28,23, 0.07),
                0 2px 4px -2px rgba(30,28,23, 0.04);
  --shadow-lg:  0 10px 15px -3px rgba(30,28,23, 0.08),
                0 4px 6px -4px rgba(30,28,23, 0.04);
  --shadow-xl:  0 20px 25px -5px rgba(30,28,23, 0.08),
                0 8px 10px -6px rgba(30,28,23, 0.03);
  --shadow-inset: inset 0 2px 4px 0 rgba(30,28,23, 0.06);

  /* ─── Transitions ────────────────────────────────── */
  --ease-out:      cubic-bezier(0, 0, 0.2, 1);
  --ease-in-out:   cubic-bezier(0.4, 0, 0.2, 1);
  --duration-fast: 120ms;
  --duration-base: 200ms;
  --duration-slow: 300ms;

  /* ─── Z-index ─────────────────────────────────────── */
  --z-base:     0;
  --z-raised:   10;
  --z-dropdown: 100;
  --z-sticky:   200;
  --z-modal:    300;
  --z-toast:    400;

  /* ─── Layout ──────────────────────────────────────── */
  --container-max: 1200px;
  --container-md:  900px;
  --container-sm:  640px;
  --nav-height:    60px;
}

/* Manual dark/light overrides */
[data-theme="dark"] {
  --color-primary:          #3BAACD;
  --color-primary-hover:    #52B8D9;
  --color-primary-active:   #69C6E3;
  --color-primary-subtle:   #0D2A38;
  --color-primary-border:   #1E5F78;
  --color-primary-text:     #0D2A38;
  --color-accent:           #7baabb;
  --color-accent-hover:     #8fc0cf;
  --color-accent-subtle:    #2A1E08;
  --color-accent-border:    #2f5a6e;
  --color-bg:               #101820;
  --color-bg-alt:           #0C141C;
  --color-surface:          #17242E;
  --color-surface-raised:   #1E3040;
  --color-border:           #28404E;
  --color-border-strong:    #3A5A6C;
  --color-text:             #E8E4DC;
  --color-text-secondary:   #9BADB8;
  --color-text-muted:       #6A8898;
  --color-text-inverse:     #1e1c17;
  --color-success:          #7ba884;
  --color-success-subtle:   #052A1E;
  --color-success-border:   #3f5f45;
  --color-warning:          #d9bb86;
  --color-warning-subtle:   #2A1A04;
  --color-warning-border:   #875325;
  --color-info:             #7baabb;
  --color-info-subtle:      #071B3C;
  --color-info-border:      #3e7188;
  --color-tip:              #a9c8ad;
  --color-tip-subtle:       #042920;
  --color-tip-border:       #3f5f45;
  --color-destructive:      #dfa9a0;
  --color-destructive-subtle: #290808;
  --color-destructive-border: #9b3434;
  --color-destructive-hover:  #e4b3aa;
  --shadow-xs:  0 1px 2px 0 rgba(0, 0, 0, 0.3);
  --shadow-sm:  0 1px 3px 0 rgba(0, 0, 0, 0.35), 0 1px 2px -1px rgba(0, 0, 0, 0.2);
  --shadow-md:  0 4px 6px -1px rgba(0, 0, 0, 0.3), 0 2px 4px -2px rgba(0, 0, 0, 0.2);
  --shadow-lg:  0 10px 15px -3px rgba(0, 0, 0, 0.35), 0 4px 6px -4px rgba(0, 0, 0, 0.25);
  --shadow-xl:  0 20px 25px -5px rgba(0, 0, 0, 0.4), 0 8px 10px -6px rgba(0, 0, 0, 0.3);
  --shadow-inset: inset 0 2px 4px 0 rgba(0, 0, 0, 0.2);
}

[data-theme="light"] {
  --color-primary:          #155E78;
  --color-primary-hover:    #0E4E66;
  --color-primary-active:   #0A3F53;
  --color-primary-subtle:   #E6F3F8;
  --color-primary-border:   #9ECFDF;
  --color-primary-text:     #FFFFFF;
  --color-accent:           #3e7188;
  --color-accent-hover:     #2f5a6e;
  --color-accent-subtle:    #edf4f8;
  --color-accent-border:    #a9cbd9;
  --color-bg:               #f4efe6;
  --color-bg-alt:           #ede8de;
  --color-surface:          #FDFAF3;
  --color-surface-raised:   #f7f2e9;
  --color-border:           #ddd6cb;
  --color-border-strong:    #a39c8e;
  --color-text:             #1e1c17;
  --color-text-secondary:   #56524a;
  --color-text-muted:       #6a6560;
  --color-text-inverse:     #FFFFFF;
  --color-success:          #4a6b50;
  --color-success-subtle:   #e9f0e6;
  --color-success-border:   #a9c8ad;
  --color-warning:          #875325;
  --color-warning-subtle:   #f7efdc;
  --color-warning-border:   #d9bb86;
  --color-info:             #3e7188;
  --color-info-subtle:      #edf4f8;
  --color-info-border:      #a9cbd9;
  --color-tip:              #3f5f45;
  --color-tip-subtle:       #e9f0e6;
  --color-tip-border:       #a9c8ad;
  --color-destructive:      #9b3434;
  --color-destructive-subtle: #f8ece7;
  --color-destructive-border: #dfa9a0;
  --color-destructive-hover:  #7f2d2d;
  --shadow-xs:  0 1px 2px 0 rgba(30,28,23, 0.05);
  --shadow-sm:  0 1px 3px 0 rgba(30,28,23, 0.08), 0 1px 2px -1px rgba(30,28,23, 0.05);
  --shadow-md:  0 4px 6px -1px rgba(30,28,23, 0.07), 0 2px 4px -2px rgba(30,28,23, 0.04);
  --shadow-lg:  0 10px 15px -3px rgba(30,28,23, 0.08), 0 4px 6px -4px rgba(30,28,23, 0.04);
  --shadow-xl:  0 20px 25px -5px rgba(30,28,23, 0.08), 0 8px 10px -6px rgba(30,28,23, 0.03);
  --shadow-inset: inset 0 2px 4px 0 rgba(30,28,23, 0.06);
}

/* ─── Reset ───────────────────────────────────────────────── */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
}

body {
  font-family: var(--font-body);
  font-size: var(--text-base);
  font-weight: var(--font-normal);
  line-height: var(--leading-normal);
  color: var(--color-text);
  background-color: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

img {
  height: auto;
}

a {
  color: var(--color-primary);
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
  transition: color var(--duration-fast) var(--ease-out);
}

a:hover {
  color: var(--color-primary-hover);
}

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

button,
input,
select,
textarea {
  font-family: inherit;
  font-size: inherit;
}

ul,
ol {
  list-style: none;
}

table {
  border-collapse: collapse;
}

/* ─── Base Typography ─────────────────────────────────────── */
h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: var(--font-semibold);
  line-height: var(--leading-tight);
  letter-spacing: var(--tracking-tight);
  color: var(--color-text);
}

h5, h6 {
  font-family: var(--font-body);
  font-weight: var(--font-semibold);
  line-height: var(--leading-snug);
}

h1 { font-size: var(--text-4xl); }
h2 { font-size: var(--text-3xl); }
h3 { font-size: var(--text-2xl); }
h4 { font-size: var(--text-xl); }
h5 { font-size: var(--text-lg); }
h6 { font-size: var(--text-base); }

@media (max-width: 768px) {
  h1 { font-size: var(--text-3xl); }
  h2 { font-size: var(--text-2xl); }
  h3 { font-size: var(--text-xl); }
  h4 { font-size: var(--text-lg); }
}

p {
  line-height: var(--leading-relaxed);
  max-width: 72ch;
}

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

strong {
  font-weight: var(--font-semibold);
}

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

/* ─── Layout ──────────────────────────────────────────────── */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--space-6);
}

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

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

.main-content {
  min-height: calc(100vh - var(--nav-height));
  padding-block: var(--space-10);
}

.section {
  padding-block: var(--space-12);
}

.section + .section {
  border-top: 1px solid var(--color-border);
}

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

.text-muted    { color: var(--color-text-muted); }
.text-secondary { color: var(--color-text-secondary); }
.text-primary  { color: var(--color-primary); }
.text-accent   { color: var(--color-accent); }
.text-success  { color: var(--color-success); }
.text-warning  { color: var(--color-warning); }

.font-display  { font-family: var(--font-display); }
.font-body     { font-family: var(--font-body); }
.font-mono     { font-family: var(--font-mono); }

.text-xs   { font-size: var(--text-xs); }
.text-sm   { font-size: var(--text-sm); }
.text-base { font-size: var(--text-base); }
.text-lg   { font-size: var(--text-lg); }
.text-xl   { font-size: var(--text-xl); }

.font-medium   { font-weight: var(--font-medium); }
.font-semibold { font-weight: var(--font-semibold); }
.font-bold     { font-weight: var(--font-bold); }

.tracking-wide  { letter-spacing: var(--tracking-wide); }
.tracking-wider { letter-spacing: var(--tracking-wider); }
.uppercase      { text-transform: uppercase; }

.flex          { display: flex; }
.flex-col      { flex-direction: column; }
.items-center  { align-items: center; }
.items-start   { align-items: flex-start; }
.justify-between { justify-content: space-between; }
.justify-center  { justify-content: center; }
.gap-2  { gap: var(--space-2); }
.gap-3  { gap: var(--space-3); }
.gap-4  { gap: var(--space-4); }
.gap-6  { gap: var(--space-6); }
.gap-8  { gap: var(--space-8); }
.flex-wrap { flex-wrap: wrap; }

.grid { display: grid; }

.mt-4  { margin-top: var(--space-4); }
.mt-6  { margin-top: var(--space-6); }
.mt-8  { margin-top: var(--space-8); }
.mb-4  { margin-bottom: var(--space-4); }
.mb-6  { margin-bottom: var(--space-6); }
.mb-8  { margin-bottom: var(--space-8); }

.surface {
  background-color: var(--color-surface);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
}

.divider {
  border: none;
  border-top: 1px solid var(--color-border);
  margin-block: var(--space-6);
}