:root {
  /* Brand Colors - Official Delta Chi */
  --color-red: #CA3E31;  /* Delta Chi Red */
  --color-buff: #F3E5AB; /* Delta Chi Buff */
  --color-red-dark: #8b1e15;
  --color-red-light: #e05e50;
  
  /* Neutral Scale */
  --color-white: #ffffff;
  --color-gray-50: #f9fafb;
  --color-gray-100: #f3f4f6;
  --color-gray-200: #e5e7eb;
  --color-gray-300: #d1d5db;
  --color-gray-400: #9ca3af;
  --color-gray-500: #6b7280;
  --color-gray-600: #4b5563;
  --color-gray-700: #374151;
  --color-gray-800: #1f2937;
  --color-gray-900: #111827;
  
  /* Semantic */
  --bg-body: var(--color-gray-50);
  --text-primary: var(--color-gray-900);
  --text-secondary: var(--color-gray-600);
  --border-color: var(--color-gray-200);
  
  /* Typography */
  --font-serif: "Cinzel", serif;
  --font-sans: "Inter", system-ui, -apple-system, sans-serif;
  
  /* Layout */
  --container-width: 1200px;
  --header-height: 80px;
  
  /* Effects */
  --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
  --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
  --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
  --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-sans);
  background-color: var(--bg-body);
  color: var(--text-primary);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

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

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

.container {
  width: 100%;
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 1.5rem;
}

.container-fluid {
  width: 100%;
  padding: 0 2rem;
}

/* Typography Utilities */
h1, h2, h3, h4, h5 {
  font-family: var(--font-serif);
  font-weight: 600;
  line-height: 1.2;
  color: var(--text-primary);
}

.text-link {
  color: var(--color-red);
  font-weight: 500;
  display: inline-flex;
  align-items: center;
  transition: color 0.2s;
}

.text-link:hover {
  color: var(--color-red-dark);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.75rem 1.5rem;
  font-weight: 500;
  border-radius: 9999px;
  transition: all 0.2s ease;
  font-size: 0.95rem;
  cursor: pointer;
}

.btn-primary {
  background-color: var(--color-red);
  color: white;
  border: 1px solid var(--color-red);
  box-shadow: 0 4px 14px 0 rgba(202, 62, 49, 0.39);
}

.btn-primary:hover {
  background-color: var(--color-red-dark);
  border-color: var(--color-red-dark);
  transform: translateY(-1px);
}

.btn-secondary {
  background-color: var(--color-gray-900);
  color: white;
  border: 1px solid var(--color-gray-900);
}

.btn-secondary:hover {
  background-color: black;
  transform: translateY(-1px);
}

.btn-outline {
  background-color: transparent;
  color: white;
  border: 1px solid rgba(255,255,255,0.6);
  backdrop-filter: blur(4px);
}

.btn-outline:hover {
  background-color: white;
  color: var(--text-primary);
}

.btn-white {
  background-color: white;
  color: var(--color-red);
}

.btn-white:hover {
  background-color: var(--color-gray-100);
}

.btn-small {
  padding: 0.5rem 1rem;
  font-size: 0.875rem;
}

/* Header & Nav */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--header-height);
  z-index: 50;
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(0,0,0,0.05);
  transition: all 0.3s ease;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.brand {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.brand-logo {
  height: 48px;
  width: auto;
}

.brand-text {
  display: flex;
  flex-direction: column;
}

.brand-title {
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: 1.25rem;
  line-height: 1;
  letter-spacing: -0.01em;
  color: var(--color-red);
}

.brand-subtitle {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-gray-500);
  margin-top: 2px;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 2rem;
}

.nav-links a {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--color-gray-600);
  transition: color 0.2s;
}

.nav-links a:hover,
.nav-links a[aria-current="page"] {
  color: var(--color-red);
}

.nav-cta {
  background: var(--color-gray-900);
  color: white !important;
  padding: 0.6rem 1.2rem;
  border-radius: 999px;
  transition: transform 0.2s !important;
}

.nav-cta:hover {
  transform: translateY(-1px);
  background: black;
}

.nav-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.5rem;
}

.hamburger {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--text-primary);
  position: relative;
}

.hamburger::before,
.hamburger::after {
  content: '';
  position: absolute;
  left: 0;
  width: 100%;
  height: 2px;
  background: inherit;
  transition: all 0.3s;
}

.hamburger::before { top: -8px; }
.hamburger::after { top: 8px; }

/* Hero Section */
.hero {
  position: relative;
  height: 90vh;
  min-height: 600px;
  display: flex;
  align-items: center;
  margin-top: -80px; /* Offset header */
  padding-top: 80px;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  z-index: -1;
}

.hero-image {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transform: scale(1.05); /* Slight zoom for parallax feel if JS added */
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to right, rgba(0,0,0,0.8), rgba(0,0,0,0.3));
}

.hero-content {
  color: white;
  position: relative;
  z-index: 10;
  max-width: 800px;
}

.hero-kicker {
  display: block;
  font-family: var(--font-sans);
  text-transform: uppercase;
  letter-spacing: 0.15em;
  font-weight: 600;
  color: var(--color-buff);
  margin-bottom: 1rem;
  font-size: 0.9rem;
}

.hero h1 {
  font-size: clamp(3rem, 5vw, 5rem);
  color: white;
  margin-bottom: 1.5rem;
  line-height: 1.1;
}

.hero-lead {
  font-size: 1.25rem;
  color: rgba(255,255,255,0.9);
  margin-bottom: 2.5rem;
  max-width: 600px;
  font-weight: 300;
}

.hero-actions {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

/* Animations */
.fade-in-up {
  opacity: 0;
  animation: fadeInUp 0.8s ease-out forwards;
}

.delay-1 { animation-delay: 0.2s; }
.delay-2 { animation-delay: 0.4s; }
.delay-3 { animation-delay: 0.6s; }

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Stats Bar */
.stats-bar {
  background: white;
  border-bottom: 1px solid var(--border-color);
  padding: 1.5rem 0;
  position: relative;
  z-index: 20;
  box-shadow: var(--shadow-sm);
}

.stats-grid {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 3rem;
  flex-wrap: wrap;
}

.stat-item {
  text-align: center;
}

.stat-value {
  display: block;
  font-family: var(--font-serif);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-red);
}

.stat-label {
  display: block;
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-gray-500);
  margin-top: 0.25rem;
}

.stat-divider {
  width: 1px;
  height: 40px;
  background: var(--border-color);
}

/* Section Common */
.section {
  padding: 5rem 0;
}

.section-header {
  text-align: center;
  max-width: 700px;
  margin: 0 auto 4rem;
}

.section-header h2 {
  font-size: 2.5rem;
  margin-bottom: 1rem;
  color: var(--text-primary);
}

.section-header p {
  font-size: 1.125rem;
  color: var(--text-secondary);
}

/* Bento Grid */
.bento-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  grid-template-rows: repeat(2, minmax(280px, auto));
  gap: 1.5rem;
}

.bento-card {
  background: white;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  overflow: hidden;
  position: relative;
  display: flex;
  flex-direction: column;
  transition: all 0.3s ease;
  box-shadow: var(--shadow-sm);
}

.bento-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: var(--color-red-light);
}

.card-content {
  padding: 2rem;
  display: flex;
  flex-direction: column;
  height: 100%;
  justify-content: space-between;
  align-items: flex-start;
  z-index: 2;
}

.card-content h3 {
  font-size: 1.5rem;
  margin-bottom: 0.75rem;
  font-family: var(--font-serif);
}

.card-content p {
  color: var(--text-secondary);
  margin-bottom: 1.5rem;
  line-height: 1.5;
}

.large {
  grid-column: span 2;
  background: #fdfdfd;
}

.large .card-content {
  width: 50%;
}

.card-image-wrapper {
  position: absolute;
  top: 0;
  right: 0;
  bottom: 0;
  width: 50%;
  overflow: hidden;
}

.card-image-wrapper img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}

.bento-card:hover .card-image-wrapper img {
  transform: scale(1.05);
}

.medium {
  grid-column: span 1;
}

.accent-bg {
  background: var(--color-red);
  color: white;
  border: none;
}

.accent-bg h3, .accent-bg p {
  color: white;
}

.light-text p {
  color: rgba(255,255,255,0.9);
}

.wide {
  grid-column: span 3;
}

.row-layout {
  flex-direction: row;
  align-items: center;
  width: 100%;
}

.text-col { flex: 1; }
.action-col { flex-shrink: 0; }
.row-layout h3 { margin-bottom: 0.5rem; }
.row-layout p { margin-bottom: 0; }

.card-icon {
  margin-bottom: 1.5rem;
  color: var(--color-red);
  background: var(--color-gray-50);
  padding: 0.75rem;
  border-radius: 0.75rem;
  display: inline-block;
}

/* CTA Section */
.cta-section {
  padding: 5rem 0;
  background-color: var(--color-gray-50);
}

.cta-inner {
  background: linear-gradient(135deg, var(--color-gray-900), #000);
  border-radius: var(--radius-xl);
  padding: 4rem;
  color: white;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
  box-shadow: var(--shadow-xl);
  position: relative;
  overflow: hidden;
}

.cta-inner::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(circle, rgba(202, 62, 49, 0.15) 0%, transparent 60%);
  pointer-events: none;
}

.cta-text h2 {
  color: white;
  font-size: 2rem;
  margin-bottom: 0.5rem;
}

.cta-text p {
  color: rgba(255,255,255,0.7);
  font-size: 1.1rem;
}

.cta-buttons {
  display: flex;
  gap: 1rem;
  position: relative;
  z-index: 2;
}

/* Footer */
.site-footer {
  background: white;
  padding-top: 4rem;
  border-top: 1px solid var(--border-color);
}

.footer-top {
  display: flex;
  justify-content: space-between;
  margin-bottom: 4rem;
}

.footer-brand {
  display: flex;
  gap: 1rem;
  align-items: center;
}

.footer-logo {
  height: 60px;
  width: auto;
  opacity: 0.8;
  filter: grayscale(1);
  transition: 0.3s;
}

.footer-brand:hover .footer-logo {
  filter: grayscale(0);
  opacity: 1;
}

.footer-brand-title {
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: 1.1rem;
  color: var(--text-primary);
}

.footer-brand-subtitle {
  font-size: 0.8rem;
  color: var(--text-secondary);
}

.footer-nav {
  display: flex;
  gap: 4rem;
}

.footer-col h4 {
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-gray-400);
  margin-bottom: 1.5rem;
}

.footer-col a {
  display: block;
  margin-bottom: 0.75rem;
  color: var(--color-gray-600);
  transition: color 0.2s;
}

.footer-col a:hover {
  color: var(--color-red);
}

.footer-bottom {
  border-top: 1px solid var(--border-color);
  padding: 2rem 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
  font-size: 0.85rem;
  color: var(--color-gray-500);
}

.legal-links {
  display: flex;
  gap: 1.5rem;
}

/* Mobile Responsive */
@media (max-width: 1024px) {
  .bento-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .large { grid-column: span 2; }
  .wide { grid-column: span 2; }
}

@media (max-width: 768px) {
  .nav-links {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    flex-direction: column;
    background: white;
    padding: 1.5rem;
    box-shadow: var(--shadow-lg);
    border-top: 1px solid var(--border-color);
    gap: 1rem;
    align-items: flex-start;
  }
  
  .nav-links.active {
    display: flex;
  }
  
  .nav-cta {
    width: 100%;
    text-align: center;
  }

  .nav-toggle {
    display: block;
  }
  
  .hero h1 {
    font-size: 2.5rem;
  }
  
  .stats-grid {
    flex-direction: column;
    gap: 1rem;
  }
  
  .stat-divider {
    width: 40px;
    height: 1px;
  }
  
  .bento-grid {
    grid-template-columns: 1fr;
  }
  
  .large, .medium, .wide {
    grid-column: span 1;
  }
  
  .large .card-content {
    width: 100%;
  }
  
  .card-image-wrapper {
    display: none; /* Hide image on mobile for stacked layout in this specific bento card */
  }
  
  .row-layout {
    flex-direction: column;
    align-items: flex-start;
    gap: 1rem;
  }
  
  .footer-top {
    flex-direction: column;
    gap: 3rem;
  }
  
  .cta-inner {
    padding: 2rem;
    flex-direction: column;
    text-align: center;
  }
}