/* =============================================================================
   Intelligence Applied AI - Stylesheet (v2, 2026-05-06)
   Aesthetic: aligned with learning.intelligenceapplied.ai
   Palette: deep navy + teal accent + white + light gray
   Type: Muli throughout
   ========================================================================== */

/* -----------------------------------------------------------------------------
   Fonts
   ----------------------------------------------------------------------------- */
@font-face {
  font-family: 'Muli';
  src: url('../assets/fonts/Muli-VariableFont_wght.ttf') format('truetype-variations');
  font-weight: 200 900;
  font-style: normal;
  font-display: swap;
}

/* -----------------------------------------------------------------------------
   Tokens
   ----------------------------------------------------------------------------- */
:root {
  /* Color */
  --color-navy: #0D1B2A;
  --color-navy-deep: #08111B;
  --color-charcoal: #1C1E23;
  --color-text: #1C1E23;
  --color-text-muted: #5A5F66;
  --color-teal: #2DB8AE;
  --color-teal-dark: #1F8B83;
  --color-teal-soft: #E6F5F3;
  --color-white: #FFFFFF;
  --color-cream: #F8F9FB;
  --color-light-gray: #F1F2F6;
  --color-border: #E5E7EB;
  --color-border-dark: rgba(255, 255, 255, 0.12);

  /* Type scale */
  --font-sans: 'Muli', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;

  /* Spacing */
  --space-xs: 0.5rem;
  --space-sm: 0.75rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-2xl: 3rem;
  --space-3xl: 4.5rem;
  --space-4xl: 6rem;

  /* Layout */
  --container-max: 1180px;
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;

  /* Motion */
  --ease: cubic-bezier(0.4, 0, 0.2, 1);
}

/* -----------------------------------------------------------------------------
   Reset + base
   ----------------------------------------------------------------------------- */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 17px;
  line-height: 1.65;
  color: var(--color-text);
  background: var(--color-white);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}
img { max-width: 100%; height: auto; display: block; }
a { color: var(--color-teal-dark); text-decoration: none; transition: color 0.18s var(--ease); }
a:hover { color: var(--color-teal); }
ul, ol { padding-left: 1.25rem; }

/* -----------------------------------------------------------------------------
   Typography
   ----------------------------------------------------------------------------- */
h1, h2, h3, h4 {
  font-family: var(--font-sans);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.15;
  margin: 0 0 var(--space-md);
  color: var(--color-charcoal);
}
h1 { font-size: clamp(2.25rem, 5vw, 3.5rem); }
h2 { font-size: clamp(1.75rem, 3.6vw, 2.5rem); }
h3 { font-size: 1.35rem; line-height: 1.3; }
h4 { font-size: 1.05rem; }
p { margin: 0 0 var(--space-md); }
.eyebrow {
  display: inline-block;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-teal-dark);
  margin-bottom: var(--space-md);
}
.lede {
  font-size: 1.18rem;
  color: var(--color-text-muted);
  line-height: 1.6;
  max-width: 36rem;
}

/* -----------------------------------------------------------------------------
   Layout
   ----------------------------------------------------------------------------- */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--space-xl);
}
section { padding: var(--space-4xl) 0; }
.section-tight { padding: var(--space-3xl) 0; }
.bg-light { background: var(--color-light-gray); }
.bg-cream { background: var(--color-cream); }
.bg-white { background: var(--color-white); }
.bg-navy { background: var(--color-navy); color: var(--color-white); }
.bg-navy h1, .bg-navy h2, .bg-navy h3, .bg-navy h4 { color: var(--color-white); }
.bg-navy .lede { color: rgba(255,255,255,0.78); }

/* -----------------------------------------------------------------------------
   Navigation
   ----------------------------------------------------------------------------- */
.site-nav {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(255, 255, 255, 0.96);
  backdrop-filter: saturate(140%) blur(8px);
  border-bottom: 1px solid var(--color-border);
}
.nav-inner {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--space-xl);
  height: 68px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-lg);
}
.nav-logo {
  font-weight: 800;
  font-size: 1.05rem;
  letter-spacing: -0.01em;
  color: var(--color-charcoal);
  text-decoration: none;
  display: inline-flex;
  align-items: baseline;
  gap: 0.4rem;
}
.nav-logo .accent { color: var(--color-teal-dark); }
.nav-links {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  align-items: center;
  gap: var(--space-xl);
}
.nav-links a {
  color: var(--color-charcoal);
  font-weight: 500;
  font-size: 0.95rem;
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
}
.nav-links a:hover { color: var(--color-teal-dark); }
.nav-links .ext::after {
  content: '↗';
  font-size: 0.85em;
  opacity: 0.6;
}
.nav-cta {
  background: var(--color-teal);
  color: var(--color-white) !important;
  padding: 0.6rem 1.1rem;
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: 0.92rem;
}
.nav-cta:hover { background: var(--color-teal-dark); color: var(--color-white) !important; }

.nav-toggle {
  display: none;
  background: none;
  border: 0;
  width: 36px;
  height: 36px;
  cursor: pointer;
  padding: 0;
  align-items: center;
  justify-content: center;
}
.nav-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--color-charcoal);
  position: relative;
}
.nav-toggle span::before,
.nav-toggle span::after {
  content: '';
  position: absolute;
  left: 0;
  width: 22px;
  height: 2px;
  background: var(--color-charcoal);
}
.nav-toggle span::before { top: -7px; }
.nav-toggle span::after { top: 7px; }

/* -----------------------------------------------------------------------------
   Buttons
   ----------------------------------------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.85rem 1.6rem;
  font-family: inherit;
  font-weight: 600;
  font-size: 0.98rem;
  border-radius: var(--radius-sm);
  border: 1.5px solid transparent;
  cursor: pointer;
  transition: all 0.18s var(--ease);
  text-decoration: none;
  line-height: 1;
}
.btn-primary {
  background: var(--color-teal);
  color: var(--color-white);
  border-color: var(--color-teal);
}
.btn-primary:hover {
  background: var(--color-teal-dark);
  border-color: var(--color-teal-dark);
  color: var(--color-white);
}
.btn-outline {
  background: transparent;
  color: var(--color-charcoal);
  border-color: var(--color-charcoal);
}
.btn-outline:hover {
  background: var(--color-charcoal);
  color: var(--color-white);
}
.bg-navy .btn-outline {
  color: var(--color-white);
  border-color: rgba(255,255,255,0.5);
}
.bg-navy .btn-outline:hover {
  background: var(--color-white);
  color: var(--color-charcoal);
  border-color: var(--color-white);
}
.btn-lg { padding: 1rem 2rem; font-size: 1.02rem; }

/* -----------------------------------------------------------------------------
   Hero
   ----------------------------------------------------------------------------- */
.hero {
  padding: var(--space-4xl) 0 var(--space-3xl);
  background: linear-gradient(180deg, var(--color-cream) 0%, var(--color-white) 100%);
}
.hero-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.9fr;
  gap: var(--space-3xl);
  align-items: center;
}
.hero-headline {
  font-size: clamp(2.4rem, 5.2vw, 3.8rem);
  margin-bottom: var(--space-lg);
}
.hero-sub {
  font-size: 1.18rem;
  color: var(--color-text-muted);
  line-height: 1.6;
  margin-bottom: var(--space-xl);
  max-width: 32rem;
}
.hero-ctas {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-md);
}
.hero-image {
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: 0 20px 50px -20px rgba(13, 27, 42, 0.2);
}

/* -----------------------------------------------------------------------------
   Cards / three doors
   ----------------------------------------------------------------------------- */
.section-header {
  text-align: center;
  max-width: 42rem;
  margin: 0 auto var(--space-3xl);
}
.section-header h2 { margin-bottom: var(--space-md); }
.section-header p { color: var(--color-text-muted); font-size: 1.1rem; margin: 0; }

.cards-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-xl);
}
.card {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-2xl) var(--space-xl);
  display: flex;
  flex-direction: column;
  transition: transform 0.2s var(--ease), box-shadow 0.2s var(--ease), border-color 0.2s var(--ease);
}
.card::before {
  content: '';
  display: block;
  width: 36px;
  height: 3px;
  background: var(--color-teal);
  margin-bottom: var(--space-lg);
}
.card:hover {
  transform: translateY(-3px);
  box-shadow: 0 14px 36px -16px rgba(13, 27, 42, 0.18);
  border-color: var(--color-teal);
}
.card h3 { margin-bottom: var(--space-sm); }
.card p {
  color: var(--color-text-muted);
  margin-bottom: var(--space-lg);
  flex-grow: 1;
}
.card-link {
  font-weight: 600;
  color: var(--color-teal-dark);
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
}
.card-link::after {
  content: '→';
  transition: transform 0.18s var(--ease);
}
.card:hover .card-link::after { transform: translateX(4px); }
.card-link.ext::after { content: '↗'; }

/* -----------------------------------------------------------------------------
   Two-column block
   ----------------------------------------------------------------------------- */
.two-col {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: var(--space-3xl);
  align-items: center;
}
.two-col img {
  border-radius: var(--radius-lg);
  box-shadow: 0 20px 50px -20px rgba(13, 27, 42, 0.18);
}

/* -----------------------------------------------------------------------------
   Process steps (services page)
   ----------------------------------------------------------------------------- */
.steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-xl);
}
.step { padding-top: var(--space-lg); }
.step-num {
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  color: var(--color-teal-dark);
  margin-bottom: var(--space-sm);
  display: block;
}
.step h3 { font-size: 1.15rem; margin-bottom: var(--space-sm); }
.step p { color: var(--color-text-muted); font-size: 0.98rem; margin: 0; }

/* -----------------------------------------------------------------------------
   Final CTA / placeholder
   ----------------------------------------------------------------------------- */
.cta-block {
  text-align: center;
  max-width: 44rem;
  margin: 0 auto;
}
.cta-block h2 { margin-bottom: var(--space-md); }
.cta-block p { font-size: 1.12rem; margin-bottom: var(--space-xl); color: rgba(255,255,255,0.82); }
.cta-block .btn-row {
  display: flex;
  gap: var(--space-md);
  justify-content: center;
  flex-wrap: wrap;
}
.cta-placeholder {
  margin-top: var(--space-2xl);
  padding: var(--space-lg);
  border: 1px dashed rgba(255,255,255,0.25);
  border-radius: var(--radius-md);
  font-size: 0.88rem;
  color: rgba(255,255,255,0.55);
  font-style: italic;
}

/* -----------------------------------------------------------------------------
   Legal pages
   ----------------------------------------------------------------------------- */
.legal-content {
  max-width: 48rem;
  margin: 0 auto;
  padding: var(--space-3xl) var(--space-xl);
}
.legal-content h1 { font-size: 2.25rem; margin-bottom: var(--space-sm); }
.legal-content .updated { color: var(--color-text-muted); font-size: 0.95rem; margin-bottom: var(--space-2xl); }
.legal-content h2 { font-size: 1.5rem; margin-top: var(--space-2xl); }
.legal-content h3 { font-size: 1.15rem; margin-top: var(--space-xl); }

/* -----------------------------------------------------------------------------
   Footer
   ----------------------------------------------------------------------------- */
.site-footer {
  background: var(--color-navy);
  color: rgba(255,255,255,0.72);
  padding: var(--space-3xl) 0 var(--space-xl);
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: var(--space-2xl);
  padding-bottom: var(--space-2xl);
  border-bottom: 1px solid var(--color-border-dark);
}
.footer-brand h4 { color: var(--color-white); margin-bottom: var(--space-sm); font-weight: 800; font-size: 1.1rem; }
.footer-brand p { font-size: 0.92rem; color: rgba(255,255,255,0.65); margin: 0; max-width: 22rem; }
.footer-col h5 {
  color: var(--color-white);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  margin: 0 0 var(--space-md);
}
.footer-col ul { list-style: none; padding: 0; margin: 0; }
.footer-col li { margin-bottom: 0.55rem; }
.footer-col a {
  color: rgba(255,255,255,0.72);
  font-size: 0.95rem;
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
}
.footer-col a:hover { color: var(--color-teal); }
.footer-col .ext::after { content: '↗'; opacity: 0.6; font-size: 0.85em; }
.footer-social {
  display: flex;
  gap: var(--space-md);
  margin-top: var(--space-md);
}
.footer-social a {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: rgba(255,255,255,0.08);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: var(--color-white);
  transition: background 0.18s var(--ease);
}
.footer-social a:hover { background: var(--color-teal); }
.footer-social svg { width: 16px; height: 16px; }
.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: var(--space-lg);
  font-size: 0.85rem;
  color: rgba(255,255,255,0.5);
  flex-wrap: wrap;
  gap: var(--space-sm);
}

/* -----------------------------------------------------------------------------
   Responsive
   ----------------------------------------------------------------------------- */
@media (max-width: 900px) {
  .hero-grid { grid-template-columns: 1fr; }
  .hero-image { order: -1; max-width: 420px; margin: 0 auto; }
  .cards-3 { grid-template-columns: 1fr; }
  .two-col { grid-template-columns: 1fr; }
  .steps { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 720px) {
  .nav-toggle { display: inline-flex; }
  .nav-links {
    position: absolute;
    top: 68px;
    left: 0;
    right: 0;
    background: var(--color-white);
    border-bottom: 1px solid var(--color-border);
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: var(--space-md) 0;
    transform: translateY(-10px);
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.18s var(--ease), transform 0.18s var(--ease);
  }
  .nav-links.open {
    opacity: 1;
    transform: translateY(0);
    pointer-events: auto;
  }
  .nav-links li { padding: 0 var(--space-xl); }
  .nav-links a { padding: 0.7rem 0; display: block; }
  .nav-cta { display: inline-block; margin: var(--space-sm) var(--space-xl); }
  section { padding: var(--space-3xl) 0; }
  .hero { padding: var(--space-2xl) 0 var(--space-3xl); }
  .footer-grid { grid-template-columns: 1fr; gap: var(--space-xl); }
  .footer-bottom { flex-direction: column; align-items: flex-start; }
  .steps { grid-template-columns: 1fr; }
  .container { padding: 0 var(--space-md); }
}

/* -----------------------------------------------------------------------------
   Accessibility helpers
   ----------------------------------------------------------------------------- */
:focus-visible {
  outline: 2px solid var(--color-teal);
  outline-offset: 3px;
  border-radius: 3px;
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
}