/* ==========================================================================
   CredBaba — Design Tokens
   Indigo/violet core + antique gold accent. Ledger-line motif throughout.
   ========================================================================== */

:root {
  /* ---- Color: Light mode (default) ---- */
  --color-bg: #F7F6FB;
  --color-bg-raised: #FFFFFF;
  --color-surface: #EFEDF9;
  --color-surface-2: #E8E6F5;
  --color-ink: #14122B;
  --color-ink-soft: #4A4768;
  --color-ink-faint: #7E7B9C;
  --color-border: #DEDBEE;
  --color-border-strong: #C6C2E0;

  --color-indigo: #4338CA;
  --color-indigo-deep: #2C2470;
  --color-indigo-soft: #EEEDFB;
  --color-gold: #B4881E;
  --color-gold-bright: #C9A227;
  --color-gold-soft: #F6EFD9;

  --color-success: #1E7A4C;
  --color-success-soft: #E3F3EA;
  --color-error: #B3261E;
  --color-error-soft: #FBEAE9;

  --gradient-hero: linear-gradient(135deg, #2C2470 0%, #4338CA 55%, #5B4FE0 100%);
  --gradient-gold: linear-gradient(120deg, #C9A227 0%, #E4C558 50%, #B4881E 100%);

  /* ---- Type ---- */
  --font-display: "Space Grotesk", "Segoe UI", system-ui, sans-serif;
  --font-body: "Inter", "Segoe UI", system-ui, sans-serif;
  --font-mono: "IBM Plex Mono", "SFMono-Regular", Consolas, monospace;

  --text-xs: 0.75rem;
  --text-sm: 0.875rem;
  --text-base: 1rem;
  --text-lg: 1.125rem;
  --text-xl: 1.375rem;
  --text-2xl: 1.75rem;
  --text-3xl: 2.25rem;
  --text-4xl: 3rem;
  --text-5xl: 3.75rem;

  /* ---- Spacing scale ---- */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.5rem;
  --space-6: 2rem;
  --space-7: 3rem;
  --space-8: 4rem;
  --space-9: 6rem;
  --space-10: 8rem;

  /* ---- Layout ---- */
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --container-max: 1180px;
  --shadow-sm: 0 1px 2px rgba(20, 18, 43, 0.06), 0 1px 3px rgba(20, 18, 43, 0.08);
  --shadow-md: 0 4px 14px rgba(20, 18, 43, 0.08), 0 2px 6px rgba(20, 18, 43, 0.06);
  --shadow-lg: 0 20px 40px rgba(20, 18, 43, 0.14), 0 8px 16px rgba(20, 18, 43, 0.08);

  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --dur-fast: 150ms;
  --dur-med: 320ms;
  --dur-slow: 560ms;
}

/* ---- Color: Dark mode ---- */
[data-theme="dark"] {
  --color-bg: #100E24;
  --color-bg-raised: #17143336;
  --color-bg-raised: #1A1738;
  --color-surface: #1F1C40;
  --color-surface-2: #262149;
  --color-ink: #F1F0FA;
  --color-ink-soft: #C4C1DE;
  --color-ink-faint: #8E8AB4;
  --color-border: #322C5C;
  --color-border-strong: #423A73;

  --color-indigo: #7C72E8;
  --color-indigo-deep: #4338CA;
  --color-indigo-soft: #241F4A;
  --color-gold: #D9B646;
  --color-gold-bright: #E4C558;
  --color-gold-soft: #2E2818;

  --color-success: #4ADE94;
  --color-success-soft: #143323;
  --color-error: #F0655D;
  --color-error-soft: #3A1A19;

  --gradient-hero: linear-gradient(135deg, #100E24 0%, #241F4A 50%, #4338CA 130%);
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 14px rgba(0, 0, 0, 0.35);
  --shadow-lg: 0 20px 40px rgba(0, 0, 0, 0.45);
}

/* ---- Reset ---- */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  font-family: var(--font-body);
  background: var(--color-bg);
  color: var(--color-ink);
  font-size: var(--text-base);
  line-height: 1.6;
  transition: background-color var(--dur-med) var(--ease-out), color var(--dur-med) var(--ease-out);
  -webkit-font-smoothing: antialiased;
}
img, svg { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
button { font-family: inherit; cursor: pointer; }
h1, h2, h3, h4 {
  font-family: var(--font-display);
  margin: 0 0 var(--space-3);
  line-height: 1.15;
  letter-spacing: -0.01em;
  font-weight: 600;
}
p { margin: 0 0 var(--space-4); }
ul { margin: 0; padding: 0; list-style: none; }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }
}

:focus-visible {
  outline: 2px solid var(--color-indigo);
  outline-offset: 2px;
  border-radius: 4px;
}
[data-theme="dark"] :focus-visible {
  outline-color: var(--color-gold-bright);
}

.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--space-5);
}

/* ---- Ledger line: signature motif ----
   A thin rule with a small tick, evoking a passbook/ledger entry line.
   Used sparingly: section transitions, stat callouts, card headers. */
.ledger-line {
  position: relative;
  height: 1px;
  background: var(--color-border-strong);
  margin: var(--space-6) 0;
}
.ledger-line::before {
  content: "";
  position: absolute;
  left: 0; top: -3px;
  width: 28px; height: 7px;
  background: var(--gradient-gold);
  border-radius: 2px;
}

/* ---- Stamped corner-notch: used on hero card + trust badges ---- */
.notch-card {
  position: relative;
  clip-path: polygon(0 0, calc(100% - 18px) 0, 100% 18px, 100% 100%, 0 100%);
}

/* ---- Buttons ---- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: 0.85rem 1.6rem;
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
  font-family: var(--font-body);
  font-weight: 600;
  font-size: var(--text-base);
  transition: transform var(--dur-fast) var(--ease-out), box-shadow var(--dur-fast) var(--ease-out), background var(--dur-fast) var(--ease-out);
  white-space: nowrap;
}
.btn:active { transform: translateY(1px); }
.btn-primary {
  background: var(--gradient-gold);
  color: #221A05;
  box-shadow: var(--shadow-sm);
}
.btn-primary:hover { box-shadow: var(--shadow-md); transform: translateY(-1px); }
.btn-outline {
  background: transparent;
  border-color: var(--color-border-strong);
  color: var(--color-ink);
}
.btn-outline:hover { border-color: var(--color-indigo); color: var(--color-indigo); }
[data-theme="dark"] .btn-outline:hover { color: var(--color-gold-bright); border-color: var(--color-gold); }
.btn-block { width: 100%; }
.btn:disabled { opacity: 0.5; cursor: not-allowed; transform: none !important; }

/* ---- Card ---- */
.card {
  background: var(--color-bg-raised);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-6);
  box-shadow: var(--shadow-sm);
}

/* ---- Badge / eyebrow ---- */
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-xs);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-weight: 700;
  color: var(--color-gold);
}
.eyebrow::before {
  content: "";
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--color-gold-bright);
}

/* ---- Utility ---- */
.mono { font-family: var(--font-mono); }
.text-soft { color: var(--color-ink-soft); }
.text-faint { color: var(--color-ink-faint); }
.center { text-align: center; }
.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;
}