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

:root {
  --color-gold: #D4AF37;
  --color-gold-hover: #e8c658;
  --color-gold-light: rgba(212, 175, 55, 0.15);
  --color-black: #0a0a0a;
  --color-black-light: #161616;
  --color-grey: #708090;
  --color-grey-light: #9ca3af;
  --color-white: #ffffff;
  --color-white-dim: rgba(255, 255, 255, 0.85);

  --font-primary: 'Inter', sans-serif;

  --transition-fast: 0.2s ease;
  --transition-normal: 0.3s ease;
  
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 2rem;
  --spacing-lg: 4rem;
  --spacing-xl: 6rem;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: var(--font-primary);
  background-color: var(--color-black);
  color: var(--color-white-dim);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4, h5, h6 {
  color: var(--color-white);
  font-weight: 600;
  margin-bottom: var(--spacing-sm);
}

h1 {
  font-size: clamp(2.5rem, 5vw, 4rem);
  line-height: 1.1;
  letter-spacing: -0.02em;
}

h2 {
  font-size: clamp(2rem, 3vw, 2.5rem);
}

a {
  color: var(--color-white);
  text-decoration: none;
  transition: color var(--transition-fast);
}

a:hover {
  color: var(--color-gold);
}

.text-gold {
  color: var(--color-gold);
}

.bg-black {
  background-color: var(--color-black);
}

.bg-black-light {
  background-color: var(--color-black-light);
}

/* Glassmorphism utility */
.glass-panel {
  background: rgba(22, 22, 22, 0.7);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 12px;
  padding: var(--spacing-md);
  box-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.37);
  transition: transform var(--transition-normal);
}

/* Forms & Inputs */
.form-group {
  margin-bottom: var(--spacing-sm);
}

.form-label {
  display: block;
  margin-bottom: 0.5rem;
  color: var(--color-white-dim);
  font-size: 0.9rem;
}

.form-control {
  width: 100%;
  padding: 0.8rem;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 6px;
  color: var(--color-white);
  font-family: var(--font-primary);
  transition: border-color var(--transition-fast);
}

.form-control:focus {
  outline: none;
  border-color: var(--color-gold);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.8rem 1.8rem;
  border-radius: 6px;
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition-normal);
  border: none;
  font-size: 1rem;
  text-decoration: none;
}

.btn-primary {
  background: linear-gradient(135deg, var(--color-gold), var(--color-gold-hover));
  color: var(--color-black);
  box-shadow: 0 4px 15px rgba(212, 175, 55, 0.2);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(212, 175, 55, 0.3);
  color: var(--color-black);
}

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

.btn-outline:hover {
  background: var(--color-gold-light);
  transform: translateY(-2px);
}

/* Navigation */
.navbar {
  position: fixed;
  top: 0;
  width: 100%;
  padding: 1.5rem 5%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  z-index: 1000;
  transition: padding var(--transition-normal), background-color var(--transition-normal);
}

.navbar.scrolled {
  background: rgba(10, 10, 10, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
  padding: 0.8rem 5%;
}

.nav-brand {
  font-size: 1.25rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--color-gold);
}

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

.nav-links a:not(.btn) {
  font-size: 0.95rem;
  font-weight: 500;
  position: relative;
  padding-bottom: 4px;
}

.nav-links a:not(.btn)::after {
  content: '';
  position: absolute;
  width: 0;
  height: 2px;
  bottom: 0;
  left: 0;
  background-color: var(--color-gold);
  transition: width var(--transition-fast);
}

.nav-links a:not(.btn):hover::after, .nav-links a.active::after {
  width: 100%;
}

.mobile-menu-btn {
  display: none;
  background: none;
  border: none;
  color: var(--color-white);
  font-size: 1.5rem;
  cursor: pointer;
}

/* Layout Utilities */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

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

.page-header {
  padding: 150px 0 80px;
  text-align: center;
  background: linear-gradient(to bottom, var(--color-black-light), var(--color-black));
}

.page-header h1 {
  margin-bottom: 0;
}

.page-header p {
  color: var(--color-gold);
  text-transform: uppercase;
  letter-spacing: 2px;
  margin-bottom: var(--spacing-sm);
  font-size: 0.9rem;
}

.grid {
  display: grid;
  gap: var(--spacing-md);
}

.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }

/* Custom Badge */
.badge {
  display: inline-block;
  padding: 0.3rem 0.8rem;
  background: rgba(212, 175, 55, 0.1);
  color: var(--color-gold);
  border-radius: 20px;
  font-size: 0.8rem;
  font-weight: 600;
  margin-bottom: 1rem;
}

/* Card overrides */
.card-hover:hover {
  transform: translateY(-5px);
  border-color: rgba(212, 175, 55, 0.3);
}

/* Animations using observer */
.animate-on-scroll {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.8s ease, transform 0.8s ease;
}

.animate-on-scroll.is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* Hero Section */
.hero {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  position: relative;
  overflow: hidden;
  background-image: url('cornerstone_bg_v2.jpg');
  background-size: cover;
  background-position: center;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(180deg, rgba(10,10,10,0.1) 0%, rgba(10,10,10,0.3) 50%, rgba(10,10,10,0.95) 100%);
  pointer-events: none;
  z-index: 0;
}

@keyframes float {
  0% { transform: translateY(0px); }
  50% { transform: translateY(-15px); }
  100% { transform: translateY(0px); }
}

.floating-logo {
  animation: float 6s ease-in-out infinite;
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 800px;
}

.hero-subtitle {
  color: var(--color-gold);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 2px;
  margin-bottom: var(--spacing-sm);
  display: block;
}

.hero-buttons {
  display: flex;
  gap: var(--spacing-sm);
  margin-top: var(--spacing-md);
}

/* Footer */
.footer {
  background-color: var(--color-black-light);
  padding: var(--spacing-lg) 0 var(--spacing-md);
  border-top: 1px solid rgba(255, 255, 255, 0.05);
}

.footer-content {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-lg);
}

.footer-brand {
  max-width: 300px;
}

.footer-brand h3 {
  color: var(--color-gold);
}

.footer-links h4 {
  color: var(--color-white);
  margin-bottom: var(--spacing-sm);
}

.footer-links ul {
  list-style: none;
}

.footer-links li {
  margin-bottom: 0.5rem;
}

.footer-links a {
  color: var(--color-grey-light);
}

.footer-links a:hover {
  color: var(--color-gold);
}

.footer-bottom {
  text-align: center;
  padding-top: var(--spacing-md);
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  color: var(--color-grey);
  font-size: 0.9rem;
}

/* Responsive */
@media (max-width: 768px) {
  .nav-links {
    position: fixed;
    top: 0;
    right: -100%;
    width: 250px;
    height: 100vh;
    background: var(--color-black-light);
    flex-direction: column;
    padding-top: 80px;
    transition: right var(--transition-normal);
    box-shadow: -5px 0 15px rgba(0,0,0,0.5);
  }

  .nav-links.active {
    right: 0;
  }

  .mobile-menu-btn {
    display: block;
    z-index: 1001;
  }

  .grid-2, .grid-3, .grid-4 {
    grid-template-columns: 1fr;
  }
  
  .hero-buttons {
    flex-direction: column;
  }
}