/* Veritas Slate / Sovereign Ledger — Marketing Site Tokens & Styles */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&display=swap');

/* ==========================================================================
   DESIGN TOKENS (extracted from frontend/src/styles.scss)
   ========================================================================== */
:root {
  /* Primary */
  --primary: #00346f;
  --primary-container: #004a99;
  --on-primary: #ffffff;
  --on-primary-container: #d4e3ff;

  /* Secondary */
  --secondary: #545f70;
  --secondary-container: #d8e2f8;
  --on-secondary: #ffffff;
  --on-secondary-container: #111c2b;

  /* Tertiary (amber / medium risk) */
  --tertiary: #5f2200;
  --tertiary-container: #ffdbc8;
  --on-tertiary: #ffffff;
  --on-tertiary-container: #3b0b00;

  /* Error (high risk) */
  --error: #ba1a1a;
  --error-container: #ffdad6;
  --on-error: #ffffff;
  --on-error-container: #410002;

  /* Success */
  --success: #1b6e2d;
  --success-container: #c8f0cc;
  --on-success: #ffffff;
  --on-success-container: #0a3314;

  /* Surface hierarchy */
  --surface: #f6fafe;
  --surface-dim: #d6dae3;
  --surface-container-lowest: #ffffff;
  --surface-container-low: #f0f4f8;
  --surface-container: #eaeef5;
  --surface-container-high: #e4e9ed;
  --surface-container-highest: #dee3ea;

  /* On-surface */
  --on-surface: #171c1f;
  --on-surface-variant: #424751;
  --outline: #727784;
  --outline-variant: #c2c7d0;

  /* Typography scale (Inter) */
  --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --display-lg: 3.5rem;
  --display-md: 2.75rem;
  --display-sm: 2.25rem;
  --headline-lg: 2rem;
  --headline-md: 1.75rem;
  --headline-sm: 1.5rem;
  --title-lg: 1.375rem;
  --title-md: 1rem;
  --title-sm: 0.875rem;
  --body-lg: 1rem;
  --body-md: 0.875rem;
  --body-sm: 0.75rem;
  --label-lg: 0.875rem;
  --label-md: 0.75rem;
  --label-sm: 0.6875rem;

  /* Spacing */
  --spacing-1: 0.25rem;
  --spacing-2: 0.5rem;
  --spacing-3: 0.75rem;
  --spacing-4: 1rem;
  --spacing-5: 1.25rem;
  --spacing-6: 1.5rem;
  --spacing-8: 2rem;
  --spacing-10: 2.5rem;
  --spacing-12: 3rem;
  --spacing-16: 4rem;

  /* Roundedness */
  --radius-default: 4px;
  --radius-sm: 2px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;

  /* Shadows (ambient / ghost) */
  --shadow-ambient: 0 4px 24px -4px rgba(23, 28, 31, 0.06);
  --shadow-elevated: 0 8px 32px -4px rgba(23, 28, 31, 0.1);

  /* Glass */
  --glass-bg: rgba(255, 255, 255, 0.85);
  --glass-blur: 16px;
}

/* ==========================================================================
   RESET & BASE
   ========================================================================== */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-family);
  font-size: var(--body-md);
  color: var(--on-surface);
  background-color: var(--surface);
  line-height: 1.6;
}

a {
  text-decoration: none;
  color: inherit;
}

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

/* ==========================================================================
   LAYOUT UTILITIES
   ========================================================================== */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-6);
}

.section {
  padding: var(--spacing-16) 0;
}

.section--alt {
  background-color: var(--surface-container-low);
}

.section__header {
  text-align: center;
  margin-bottom: var(--spacing-12);
}

.section__title {
  font-size: var(--display-sm);
  font-weight: 700;
  color: var(--on-surface);
  letter-spacing: -0.02em;
  margin-bottom: var(--spacing-3);
}

.section__subtitle {
  font-size: var(--body-lg);
  color: var(--on-surface-variant);
  max-width: 600px;
  margin: 0 auto;
  line-height: 1.7;
}

/* ==========================================================================
   NAVIGATION (sticky, glass-panel)
   ========================================================================== */
.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--glass-bg);
  backdrop-filter: blur(var(--glass-blur));
  -webkit-backdrop-filter: blur(var(--glass-blur));
  box-shadow: var(--shadow-ambient);
}

.nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--spacing-4) var(--spacing-6);
  max-width: 1200px;
  margin: 0 auto;
}

.nav__brand {
  display: flex;
  align-items: center;
  gap: var(--spacing-2);
}

.nav__brand-icon {
  color: var(--primary);
  font-variation-settings: 'FILL' 1;
  font-size: 28px;
}

.nav__brand-text {
  font-size: var(--title-lg);
  font-weight: 700;
  color: var(--primary);
  letter-spacing: -0.02em;
}

.nav__links {
  display: flex;
  align-items: center;
  gap: var(--spacing-8);
  list-style: none;
}

.nav__link {
  font-size: var(--label-lg);
  font-weight: 500;
  color: var(--on-surface-variant);
  transition: color 0.15s ease;
}

.nav__link:hover {
  color: var(--primary);
}

.nav__cta {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-2);
  padding: var(--spacing-2) var(--spacing-5);
  background: linear-gradient(135deg, var(--primary), var(--primary-container));
  color: var(--on-primary);
  border-radius: var(--radius-md);
  font-size: var(--label-lg);
  font-weight: 600;
  transition: opacity 0.15s ease;
}

.nav__cta:hover {
  opacity: 0.9;
}

/* ==========================================================================
   HERO
   ========================================================================== */
.hero {
  position: relative;
  background: linear-gradient(135deg, #00346f 0%, #004a99 100%);
  color: var(--on-primary);
  padding: var(--spacing-16) 0;
  overflow: hidden;
  min-height: 520px;
  display: flex;
  align-items: center;
}

.hero__orb {
  position: absolute;
  border-radius: 50%;
  pointer-events: none;
}

.hero__orb--1 {
  width: 600px;
  height: 600px;
  top: -30%;
  right: -10%;
  background: radial-gradient(circle, rgba(171, 199, 255, 0.15) 0%, transparent 70%);
}

.hero__orb--2 {
  width: 400px;
  height: 400px;
  bottom: -20%;
  left: -5%;
  background: radial-gradient(circle, rgba(215, 226, 255, 0.1) 0%, transparent 70%);
}

.hero__orb--3 {
  width: 200px;
  height: 200px;
  top: 20%;
  left: 50%;
  background: radial-gradient(circle, rgba(255, 255, 255, 0.06) 0%, transparent 70%);
}

.hero__content {
  position: relative;
  z-index: 1;
  max-width: 720px;
}

.hero__headline {
  font-size: var(--display-lg);
  font-weight: 800;
  line-height: 1.08;
  letter-spacing: -0.03em;
  margin-bottom: var(--spacing-6);
}

.hero__subheadline {
  font-size: var(--title-lg);
  font-weight: 400;
  line-height: 1.6;
  opacity: 0.85;
  max-width: 560px;
  margin-bottom: var(--spacing-10);
}

.hero__actions {
  display: flex;
  align-items: center;
  gap: var(--spacing-4);
  flex-wrap: wrap;
}

.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-2);
  padding: var(--spacing-4) var(--spacing-8);
  background: var(--on-primary);
  color: var(--primary);
  border: none;
  border-radius: var(--radius-md);
  font-family: var(--font-family);
  font-size: var(--body-lg);
  font-weight: 700;
  cursor: pointer;
  transition: opacity 0.15s ease, transform 0.15s ease;
  box-shadow: 0 8px 16px -4px rgba(0, 52, 111, 0.25);
}

.btn-primary:hover {
  opacity: 0.92;
  transform: translateY(-1px);
}

.btn-ghost {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-2);
  padding: var(--spacing-4) var(--spacing-8);
  background: transparent;
  color: var(--on-primary);
  border: none;
  border-radius: var(--radius-md);
  font-family: var(--font-family);
  font-size: var(--body-lg);
  font-weight: 600;
  cursor: pointer;
  transition: background-color 0.15s ease;
}

.btn-ghost:hover {
  background-color: rgba(255, 255, 255, 0.08);
}

/* ==========================================================================
   SHOWCASE
   ========================================================================== */
.showcase__slides {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-12);
}

.showcase__slide {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-4);
}

.showcase__img {
  width: 100%;
  border-radius: var(--radius-lg, 0.5rem);
  box-shadow: 0 8px 32px -4px rgba(23, 28, 31, 0.12);
}

.showcase__caption {
  font-size: var(--body-md);
  color: var(--on-surface-variant);
  text-align: center;
  font-weight: 500;
}

/* ==========================================================================
   FEATURES GRID
   ========================================================================== */
.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-8);
}

.feature-card {
  background: var(--surface-container-lowest);
  border-radius: var(--radius-lg);
  padding: var(--spacing-8);
  box-shadow: var(--shadow-ambient);
  transition: box-shadow 0.2s ease, transform 0.2s ease;
}

.feature-card:hover {
  box-shadow: var(--shadow-elevated);
  transform: translateY(-2px);
}

.feature-card__icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  border-radius: var(--radius-md);
  background: linear-gradient(135deg, var(--primary), var(--primary-container));
  color: var(--on-primary);
  margin-bottom: var(--spacing-5);
  font-size: 24px;
}

.feature-card__title {
  font-size: var(--title-lg);
  font-weight: 700;
  color: var(--on-surface);
  margin-bottom: var(--spacing-2);
  letter-spacing: -0.01em;
}

.feature-card__desc {
  font-size: var(--body-md);
  color: var(--on-surface-variant);
  line-height: 1.7;
}

/* ==========================================================================
   PRICING
   ========================================================================== */
.pricing-card {
  background: var(--surface-container-lowest);
  border-radius: var(--radius-lg);
  padding: var(--spacing-12);
  box-shadow: var(--shadow-ambient);
  text-align: center;
  max-width: 560px;
  margin: 0 auto;
}

.pricing-card__text {
  font-size: var(--body-lg);
  color: var(--on-surface-variant);
  margin-bottom: var(--spacing-8);
  line-height: 1.7;
}

.btn-gradient {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-2);
  padding: var(--spacing-4) var(--spacing-8);
  background: linear-gradient(135deg, var(--primary), var(--primary-container));
  color: var(--on-primary);
  border: none;
  border-radius: var(--radius-md);
  font-family: var(--font-family);
  font-size: var(--body-lg);
  font-weight: 700;
  cursor: pointer;
  transition: opacity 0.15s ease;
}

.btn-gradient:hover {
  opacity: 0.9;
}

/* ==========================================================================
   CONTACT
   ========================================================================== */
.contact__content {
  text-align: center;
  max-width: 560px;
  margin: 0 auto;
}

.contact__desc {
  font-size: var(--body-lg);
  color: var(--on-surface-variant);
  line-height: 1.7;
  margin-bottom: var(--spacing-8);
}

/* ==========================================================================
   FOOTER
   ========================================================================== */
.footer {
  padding: var(--spacing-8) 0;
  background: var(--surface-container-high);
}

.footer__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--spacing-4);
}

.footer__copy {
  font-size: var(--label-sm);
  color: var(--on-surface-variant);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.footer__links {
  display: flex;
  gap: var(--spacing-6);
  list-style: none;
}

.footer__link {
  font-size: var(--label-sm);
  font-weight: 600;
  color: var(--outline);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  transition: color 0.15s ease;
}

.footer__link:hover {
  color: var(--primary);
}

/* ==========================================================================
   RESPONSIVE (single column below 768px)
   ========================================================================== */
@media (max-width: 768px) {
  .hero__headline {
    font-size: var(--display-sm);
  }

  .hero__subheadline {
    font-size: var(--body-lg);
  }

  .features-grid {
    grid-template-columns: 1fr;
    gap: var(--spacing-6);
  }

  .nav__links {
    display: none;
  }

  .section__title {
    font-size: var(--headline-lg);
  }

  .footer__inner {
    flex-direction: column;
    text-align: center;
  }
}