/* Base CSS tokens and styles */
@media (prefers-reduced-motion: reduce) {
  * {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}
:root {
  /* Typography Scale */
  --font-scale: 1.25; /* Major third */
  --text-sm: calc(1rem / var(--font-scale));
  --text-base: 1rem;
  --text-lg: calc(var(--text-base) * var(--font-scale));
  --text-xl: calc(var(--text-lg) * var(--font-scale));
  --text-2xl: calc(var(--text-xl) * var(--font-scale));
  --text-3xl: calc(var(--text-2xl) * var(--font-scale));
  
  /* Font Weights */
  --font-normal: 400;
  --font-medium: 500;
  --font-semibold: 600;
  --font-bold: 700;

  /* Colors */
  --c-navy: #16354D;
  --c-gold: #BF843E;
  --c-bg: #FDFDF9;
  --c-primary: var(--c-navy);
  --c-accent: var(--c-gold);
  
  /* Spacing */
  --radius: 8px;
  --shadow: 0 2px 6px rgba(0,0,0,.06);
  --sp-1: .25rem;
  --sp-2: .5rem;
  --sp-3: 1rem;
  --sp-4: 2rem;
  
  /* Typography */
  --font-sans: "InterVariable", system-ui, "Segoe UI", Helvetica, Arial, sans-serif;
}

/* Font Face */
@font-face {
  font-family: 'InterVariable';
  src: url('../assets/fonts/InterVariable.woff2') format('woff2');
  font-weight: 100 900;
  font-display: swap;
}

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

html {
  scroll-behavior: smooth;
  scroll-snap-type: y mandatory;
}

html.legal-page {
  scroll-behavior: auto;
  scroll-snap-type: none;
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
    scroll-snap-type: none;
  }
}

body {
  font-family: var(--font-sans);
  background: var(--c-bg);
  color: var(--c-primary);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

/* Layout */
/* Layout structure */
body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

main {
  flex: 1;
}

/* Section styling */
section {
  min-height: 100vh;
  padding: var(--sp-4) max(var(--sp-4), 5%);
}

/* Homepage sections */
.hero,
#mission,
#what-we-build,
.why-now,
#principles,
.partner-callout {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: var(--sp-3);
  text-align: center;
  position: relative;
  scroll-snap-align: start;
  transform: translateY(20px);
  transition: opacity 150ms ease-out, transform 150ms ease-out;}

/* Section backgrounds */
.hero {
  background: linear-gradient(135deg, var(--c-navy) 0%, var(--c-primary) 100%);
  color: var(--c-bg);
  padding-top: calc(var(--sp-4) * 2);
}

section:nth-child(even) {
  background: var(--c-bg);
  color: var(--c-navy);
}

section:nth-child(odd):not(.hero) {
  background: color-mix(in srgb, var(--c-gold) 5%, var(--c-bg));
  color: var(--c-navy);
}

/* Content width control */
section > * {
  max-width: min(65ch, 100%);
  margin-inline: auto;
}

/* Lists and value cards */
.principles {
  background: linear-gradient(
    135deg,
    color-mix(in srgb, var(--c-navy) 3%, var(--c-bg)) 0%,
    color-mix(in srgb, var(--c-gold) 5%, var(--c-bg)) 100%
  );
}
ul {
  list-style: none;
  padding: 0;
  display: grid;
  gap: var(--sp-3);
  width: 100%;
  max-width: 1200px;
  margin: var(--sp-4) auto;
}

ul li {
  background: var(--c-bg);
  padding: var(--sp-3);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  border: 1px solid color-mix(in srgb, var(--c-navy) 10%, transparent);
}

.value-cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--sp-3);
  width: 100%;
  max-width: 1200px;
  margin: var(--sp-4) auto;
}

.card {
  background: var(--c-bg);
  color: var(--c-navy);
  padding: var(--sp-4);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  border: 1px solid color-mix(in srgb, var(--c-gold) 30%, transparent);
  transition: all 150ms ease-out;
  font-weight: var(--font-medium);
  font-size: var(--text-lg);
  display: flex;
  flex-direction: column;
  justify-content: center;
  min-height: 160px;
  position: relative;
  overflow: hidden;
}

.card::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, transparent, color-mix(in srgb, var(--c-gold) 5%, transparent));
  opacity: 0;
  transition: opacity 150ms ease-out;
}

.card:hover::before {
  opacity: 1;
}

.card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow), 0 4px 12px rgba(191, 132, 62, 0.1);
}

section.visible {
  opacity: 1;
  transform: translateY(0);
}

@media (prefers-reduced-motion: reduce) {
  section {
    opacity: 1;
    transform: none;
    transition: none;
  }
}

/* Header & Navigation */
header {
  position: fixed;
  top: 0;
  width: 100%;
  z-index: 100;
  background: color-mix(in srgb, var(--c-bg) 95%, transparent);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid color-mix(in srgb, var(--c-navy) 10%, transparent);
}

nav {
  max-width: 1440px;
  margin: 0 auto;
  padding: var(--sp-2) max(var(--sp-3), 5%);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo-link {
  display: flex;
  align-items: center;
  text-decoration: none;
  color: var(--c-navy);
  font-weight: var(--font-semibold);
}

.logo-link img {
  margin-right: var(--sp-2);
}

.nav-links {
  display: flex;
  gap: var(--sp-4);
  list-style: none;
  margin: 0;
  padding: 0;
  align-items: center;
}

.nav-links a {
  color: var(--c-navy);
  text-decoration: none;
  font-weight: var(--font-medium);
  opacity: 0.8;
  transition: opacity 150ms ease-out;
}

.nav-links a:hover {
  opacity: 1;
}

.nav-links .button {
  opacity: 1;
}

/* Mobile Menu */
.menu-toggle {
  display: none;
  width: 40px;
  height: 40px;
  padding: 8px;
  border: none;
  background: transparent;
  cursor: pointer;
  position: relative;
}

.burger,
.burger::before,
.burger::after {
  content: '';
  display: block;
  width: 24px;
  height: 2px;
  background: var(--c-primary);
  transition: transform 150ms ease;
}

.burger::before {
  transform: translateY(-8px);
}

.burger::after {
  transform: translateY(6px);
}

.menu-toggle[aria-expanded='true'] .burger {
  transform: rotate(45deg);
}

.menu-toggle[aria-expanded='true'] .burger::before {
  transform: translateY(0) rotate(-90deg);
}

.menu-toggle[aria-expanded='true'] .burger::after {
  transform: translateY(0) rotate(-90deg);
}

@media (max-width: 640px) {
  .menu-toggle {
    display: block;
  }
  
  .nav-links {
    position: fixed;
    top: 60px;
    left: 0;
    right: 0;
    width: 100%;
    flex-direction: column;
    background: var(--c-bg);
    padding: var(--sp-3);
    transform: translateY(-150%);
    opacity: 0;
    transition: transform 250ms ease-out, opacity 250ms ease-out;
    box-shadow: var(--shadow);
    border-bottom: 1px solid color-mix(in srgb, var(--c-navy) 10%, transparent);
    pointer-events: none;
  }
  
  .nav-links.active {
    transform: translateY(0);
    opacity: 1;
    pointer-events: all;
  }
  
  .nav-links a {
    padding: var(--sp-2) 0;
    display: block;
    width: 100%;
    text-align: center;
  }
  
  .nav-links .button {
    margin-top: var(--sp-2);
  }
}

/* Typography */
/* Typography */
h1, h2, h3, h4, h5, h6 {
  margin-bottom: var(--sp-3);
  line-height: 1.2;
  font-weight: var(--font-bold);
  color: inherit;
}

h1 {
  font-size: var(--text-3xl);
  letter-spacing: -0.02em;
  max-width: 15ch;
  margin-inline: auto;
}

h2 {
  font-size: var(--text-2xl);
  letter-spacing: -0.01em;
}

h3 {
  font-size: var(--text-xl);
  font-weight: var(--font-semibold);
}

p {
  margin-bottom: var(--sp-3);
  max-width: 65ch;
  margin-inline: auto;
}

.highlight {
  color: var(--c-gold);
  font-weight: var(--font-medium);
  font-size: var(--text-lg);
}

/* Components */
/* Buttons */
.button {
  display: inline-block;
  padding: var(--sp-2) var(--sp-4);
  background: var(--c-gold);
  color: var(--c-navy);
  text-decoration: none;
  border-radius: var(--radius);
  font-weight: 500;
  transition: transform 150ms ease-out, background-color 150ms ease-out;
  border: 1px solid transparent;
}

.button:hover {
  background: color-mix(in srgb, var(--c-gold) 90%, white);
}

/* Footer styles */
footer {
  background: var(--c-bg);
  border-top: 1px solid color-mix(in srgb, var(--c-navy) 10%, transparent);
  padding: var(--sp-3) max(var(--sp-3), 5%);
  margin-top: auto;
  scroll-snap-align: start;
  min-height: max-content;
}

.footer-content {
  max-width: 1440px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--sp-3);
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: var(--sp-2);
}

.footer-brand p {
  margin: 0;
  font-size: var(--text-sm);
  opacity: 0.8;
}

.footer-nav ul {
  display: flex;
  gap: var(--sp-3);
  margin: 0;
}

.footer-nav a {
  color: var(--c-navy);
  text-decoration: none;
  font-size: var(--text-sm);
  opacity: 0.8;
  transition: opacity 150ms ease-out;
}

.footer-nav a:hover {
  opacity: 1;
}

@media (max-width: 640px) {
  .footer-content {
    flex-direction: column;
    text-align: center;
  }
  
  .footer-brand {
    flex-direction: column;
  }
  
  .footer-nav ul {
    flex-direction: column;
    gap: var(--sp-2);
  }
}

/* Legal pages */
.legal-content {
  max-width: 800px;
  margin: 80px auto;
  padding: 0 var(--sp-4);
}

.legal-content h1 {
  color: var(--c-navy);
  margin-bottom: var(--sp-4);
}

.legal-content h2 {
  color: var(--c-navy);
  margin-top: var(--sp-4);
  margin-bottom: var(--sp-2);
}

.legal-content p {
  margin-bottom: var(--sp-3);
}

.legal-content ul {
  margin: var(--sp-2) 0 var(--sp-3) var(--sp-4);
  list-style: disc;
}

.legal-content ul li {
  margin-bottom: var(--sp-2);
}

.legal-content .back-link {
  margin: var(--sp-4) 0;
  text-align: center;
}

/* Email functionality */
.js-contact {
  position: relative;
  cursor: pointer;
}

.js-contact::after {
  content: attr(data-tooltip);
  position: absolute;
  bottom: 100%;
  left: 50%;
  transform: translateX(-50%) translateY(-10px);
  background: var(--c-navy);
  color: var(--c-bg);
  padding: var(--sp-2);
  border-radius: var(--radius);
  font-size: var(--text-sm);
  white-space: nowrap;
  opacity: 0;
  pointer-events: none;
  transition: all 150ms ease-out;
}

.js-contact:hover::after {
  opacity: 1;
  transform: translateX(-50%) translateY(-5px);
}

.button:hover {
  transform: translateY(-2px);
}

.button-outline {
  background: transparent;
  border: 1px solid var(--c-gold);
  color: var(--c-gold);
}

.button-outline:hover {
  background: color-mix(in srgb, var(--c-gold) 10%, transparent);
}

.cta-buttons {
  display: flex;
  gap: var(--sp-2);
  margin-top: var(--sp-3);
}

.value-cards {
  display: grid;
  gap: var(--sp-3);
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
}

.card {
  padding: var(--sp-3);
  background: white;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

/* Responsive Breakpoints */
@media (min-width: 641px) {
  section {
    padding: var(--sp-4) 10%;
  }
}

@media (min-width: 1024px) {
  section {
    padding: var(--sp-4) 15%;
  }
}