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

/* --- Core Tokens & Theme Variables --- */
:root {
  --font-heading: 'Outfit', sans-serif;
  --font-body: 'Inter', sans-serif;

  /* Theme Defaults: Light Mode */
  --bg-primary: #f8fafc;
  --bg-secondary: #ffffff;
  --bg-tertiary: #f1f5f9;
  --text-primary: #0f172a;
  --text-secondary: #475569;
  --text-muted: #94a3b8;
  --accent: #0284c7;
  --accent-rgb: 2, 132, 199;
  --accent-secondary: #7c3aed;
  --border-color: #e2e8f0;
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -2px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -4px rgba(0, 0, 0, 0.1);
  --glass-bg: rgba(255, 255, 255, 0.7);
  --glass-border: rgba(226, 232, 240, 0.8);
  --glass-blur: 12px;
}

[data-theme="dark"] {
  /* Dark Mode Variables */
  --bg-primary: #090d16;
  --bg-secondary: #111827;
  --bg-tertiary: #1f2937;
  --text-primary: #f9fafb;
  --text-secondary: #d1d5db;
  --text-muted: #6b7280;
  --accent: #00f0ff;
  --accent-rgb: 0, 240, 255;
  --accent-secondary: #a855f7;
  --border-color: #374151;
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.5);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.3), 0 2px 4px -2px rgba(0, 0, 0, 0.3);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.4), 0 4px 6px -4px rgba(0, 0, 0, 0.4);
  --glass-bg: rgba(17, 24, 39, 0.7);
  --glass-border: rgba(55, 65, 81, 0.6);
  --glass-blur: 15px;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-body);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  transition: background-color 0.3s ease, color 0.3s ease;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 700;
  line-height: 1.25;
  color: var(--text-primary);
}

a {
  color: inherit;
  text-decoration: none;
  transition: color 0.2s ease;
}

/* --- Layout Container --- */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* --- Navigation Header --- */
header {
  position: sticky;
  top: 0;
  z-index: 100;
  background-color: var(--glass-bg);
  backdrop-filter: blur(var(--glass-blur));
  -webkit-backdrop-filter: blur(var(--glass-blur));
  border-bottom: 1px solid var(--glass-border);
  transition: background-color 0.3s ease, border-color 0.3s ease;
}

.nav-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 80px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: 1.5rem;
  letter-spacing: -0.5px;
  background: linear-gradient(135deg, var(--accent), var(--accent-secondary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.logo-sub {
  font-size: 0.85rem;
  font-weight: 400;
  color: var(--text-muted);
  -webkit-text-fill-color: var(--text-muted);
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 2rem;
  list-style: none;
}

.nav-link {
  font-weight: 500;
  font-size: 0.95rem;
  position: relative;
  padding: 0.5rem 0;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--accent), var(--accent-secondary));
  transition: width 0.3s ease;
}

.nav-link:hover::after,
.nav-link.active::after {
  width: 100%;
}

.nav-link:hover,
.nav-link.active {
  color: var(--accent);
}

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

.theme-toggle {
  background: none;
  border: 1px solid var(--border-color);
  width: 40px;
  height: 40px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  color: var(--text-primary);
  transition: background-color 0.2s, border-color 0.2s;
}

.theme-toggle:hover {
  background-color: var(--bg-tertiary);
  border-color: var(--accent);
}

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

/* --- Hero Section --- */
.hero {
  padding: 8rem 0 6rem 0;
  position: relative;
  overflow: hidden;
  background: radial-gradient(circle at 10% 20%, rgba(var(--accent-rgb), 0.08) 0%, transparent 40%),
              radial-gradient(circle at 90% 80%, rgba(124, 58, 237, 0.08) 0%, transparent 40%);
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 4rem;
  align-items: center;
}

.hero-content h1 {
  font-size: 3.5rem;
  line-height: 1.1;
  margin-bottom: 1.5rem;
  background: linear-gradient(135deg, var(--text-primary) 50%, var(--accent) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-content p {
  font-size: 1.15rem;
  color: var(--text-secondary);
  margin-bottom: 2.5rem;
  max-width: 600px;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 1rem;
  background: rgba(var(--accent-rgb), 0.1);
  border: 1px solid rgba(var(--accent-rgb), 0.2);
  color: var(--accent);
  border-radius: 9999px;
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 1.5rem;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.btn-group {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.8rem 1.8rem;
  font-size: 1rem;
  font-weight: 600;
  border-radius: 8px;
  cursor: pointer;
  transition: all 0.3s ease;
  font-family: var(--font-heading);
}

.btn-primary {
  background: linear-gradient(135deg, var(--accent), var(--accent-secondary));
  color: #ffffff;
  border: none;
  box-shadow: 0 4px 14px rgba(var(--accent-rgb), 0.3);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(var(--accent-rgb), 0.4);
}

.btn-secondary {
  background-color: var(--bg-secondary);
  color: var(--text-primary);
  border: 1px solid var(--border-color);
}

.btn-secondary:hover {
  border-color: var(--accent);
  background-color: var(--bg-tertiary);
  transform: translateY(-2px);
}

.hero-visual {
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
}

.hero-glow-card {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  backdrop-filter: blur(var(--glass-blur));
  padding: 2.5rem;
  border-radius: 16px;
  box-shadow: var(--shadow-lg);
  width: 100%;
  position: relative;
  z-index: 10;
  overflow: hidden;
}

.hero-glow-card::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: conic-gradient(transparent, rgba(var(--accent-rgb), 0.3), transparent 30%);
  animation: rotateGlow 8s linear infinite;
  z-index: -1;
}

.hero-glow-card-content {
  background: var(--bg-secondary);
  border-radius: 8px;
  padding: 1.5rem;
  border: 1px solid var(--border-color);
}

@keyframes rotateGlow {
  100% { transform: rotate(360deg); }
}

/* --- Section Global Styling --- */
section {
  padding: 6rem 0;
  border-bottom: 1px solid var(--border-color);
}

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

.section-header h2 {
  font-size: 2.5rem;
  margin-bottom: 1rem;
}

.section-header p {
  color: var(--text-secondary);
  font-size: 1.1rem;
}

/* --- Feature / Stats Grid --- */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 2rem;
  margin-top: 3rem;
}

.stat-card {
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  padding: 2rem;
  border-radius: 12px;
  text-align: center;
  box-shadow: var(--shadow-sm);
  transition: transform 0.3s ease, border-color 0.3s ease;
}

.stat-card:hover {
  transform: translateY(-5px);
  border-color: var(--accent);
}

.stat-number {
  font-family: var(--font-heading);
  font-size: 3rem;
  font-weight: 800;
  color: var(--accent);
  line-height: 1;
  margin-bottom: 0.5rem;
}

.stat-label {
  font-size: 0.9rem;
  color: var(--text-secondary);
  font-weight: 600;
}

/* --- Product Filter & Showcase --- */
.filter-container {
  display: flex;
  justify-content: center;
  gap: 1rem;
  margin-bottom: 3rem;
  flex-wrap: wrap;
}

.filter-btn {
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  padding: 0.6rem 1.5rem;
  border-radius: 30px;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s ease;
}

.filter-btn:hover,
.filter-btn.active {
  background-color: var(--accent);
  color: #ffffff;
  border-color: var(--accent);
}

.search-box {
  max-width: 500px;
  margin: 0 auto 3rem auto;
  position: relative;
}

.search-input {
  width: 100%;
  padding: 1rem 1.5rem;
  font-size: 1rem;
  border-radius: 30px;
  border: 1px solid var(--border-color);
  background-color: var(--bg-secondary);
  color: var(--text-primary);
  box-shadow: var(--shadow-sm);
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.search-input:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(var(--accent-rgb), 0.15);
}

.products-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2.5rem;
}

.product-card {
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 16px;
  overflow: hidden;
  box-shadow: var(--shadow-md);
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  display: flex;
  flex-direction: column;
}

.product-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-lg);
  border-color: rgba(var(--accent-rgb), 0.4);
}

.product-img-placeholder {
  height: 200px;
  background: linear-gradient(135deg, var(--bg-tertiary), rgba(var(--accent-rgb), 0.15));
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
}

.product-img-placeholder svg {
  width: 48px;
  height: 48px;
  color: var(--accent);
  opacity: 0.8;
  transition: transform 0.3s ease;
}

.product-card:hover .product-img-placeholder svg {
  transform: scale(1.1) rotate(5deg);
}

.product-info {
  padding: 1.5rem;
  flex-grow: 1;
  display: flex;
  flex-direction: column;
}

.product-tag {
  align-self: flex-start;
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  color: var(--accent);
  background: rgba(var(--accent-rgb), 0.1);
  padding: 0.25rem 0.6rem;
  border-radius: 4px;
  margin-bottom: 0.75rem;
}

.product-title {
  font-size: 1.3rem;
  margin-bottom: 0.5rem;
}

.product-desc {
  font-size: 0.9rem;
  color: var(--text-secondary);
  margin-bottom: 1.25rem;
  flex-grow: 1;
}

.product-specs {
  border-top: 1px solid var(--border-color);
  padding-top: 1rem;
  font-size: 0.85rem;
  list-style: none;
}

.product-specs li {
  display: flex;
  justify-content: space-between;
  margin-bottom: 0.4rem;
}

.product-specs span:first-child {
  color: var(--text-muted);
}

.product-specs span:last-child {
  font-weight: 600;
}

/* --- Timeline Section --- */
.timeline {
  position: relative;
  max-width: 800px;
  margin: 0 auto;
}

.timeline::before {
  content: '';
  position: absolute;
  top: 0;
  bottom: 0;
  left: 50%;
  width: 4px;
  background-color: var(--border-color);
  transform: translateX(-50%);
}

.timeline-item {
  position: relative;
  width: 50%;
  padding: 2rem;
  margin-bottom: 2rem;
}

.timeline-item:nth-child(odd) {
  left: 0;
  padding-right: 4rem;
  text-align: right;
}

.timeline-item:nth-child(even) {
  left: 50%;
  padding-left: 4rem;
  text-align: left;
}

.timeline-badge {
  position: absolute;
  top: 2rem;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background-color: var(--accent);
  border: 4px solid var(--bg-primary);
  z-index: 2;
  box-shadow: 0 0 0 4px rgba(var(--accent-rgb), 0.2);
}

.timeline-item:nth-child(odd) .timeline-badge {
  right: -10px;
}

.timeline-item:nth-child(even) .timeline-badge {
  left: -10px;
}

.timeline-content {
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  padding: 1.5rem;
  border-radius: 12px;
  box-shadow: var(--shadow-sm);
  transition: border-color 0.2s ease, transform 0.2s ease;
}

.timeline-content:hover {
  border-color: var(--accent);
  transform: translateY(-2px);
}

.timeline-year {
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: 1.25rem;
  color: var(--accent);
  margin-bottom: 0.5rem;
}

.timeline-title {
  font-weight: 700;
  margin-bottom: 0.5rem;
}

.timeline-desc {
  font-size: 0.9rem;
  color: var(--text-secondary);
}

/* --- Tech Grid & List --- */
.tech-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 3rem;
  align-items: center;
}

.tech-image {
  background: linear-gradient(135deg, var(--bg-tertiary) 0%, rgba(var(--accent-rgb), 0.2) 100%);
  border-radius: 16px;
  border: 1px solid var(--border-color);
  padding: 3rem;
  display: flex;
  justify-content: center;
  align-items: center;
  box-shadow: var(--shadow-lg);
}

.tech-image svg {
  width: 120px;
  height: 120px;
  color: var(--accent);
}

.tech-list {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.tech-item {
  display: flex;
  gap: 1rem;
}

.tech-icon {
  background: rgba(var(--accent-rgb), 0.1);
  width: 48px;
  height: 48px;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  color: var(--accent);
}

.tech-text h3 {
  font-size: 1.2rem;
  margin-bottom: 0.25rem;
}

.tech-text p {
  font-size: 0.9rem;
  color: var(--text-secondary);
}

/* --- Contact & Location Cards --- */
.contact-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 4rem;
}

.contact-form-card {
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  padding: 3rem;
  border-radius: 16px;
  box-shadow: var(--shadow-md);
}

.form-group {
  margin-bottom: 1.5rem;
}

.form-group label {
  display: block;
  font-size: 0.9rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
}

.form-control {
  width: 100%;
  padding: 0.8rem 1rem;
  border-radius: 8px;
  border: 1px solid var(--border-color);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  font-family: var(--font-body);
  font-size: 0.95rem;
  transition: border-color 0.2s, box-shadow 0.2s;
}

.form-control:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(var(--accent-rgb), 0.15);
}

.location-cards {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.location-card {
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  padding: 1.5rem;
  border-radius: 12px;
  box-shadow: var(--shadow-sm);
  display: flex;
  gap: 1rem;
  transition: border-color 0.2s, transform 0.2s;
}

.location-card:hover {
  border-color: var(--accent);
  transform: translateY(-2px);
}

.location-info h3 {
  font-size: 1.1rem;
  margin-bottom: 0.5rem;
}

.location-info p {
  font-size: 0.85rem;
  color: var(--text-secondary);
  margin-bottom: 0.25rem;
}

/* --- AI Hub Page styles --- */
.ai-badge {
  display: inline-block;
  background: #10b981;
  color: #ffffff;
  font-size: 0.75rem;
  font-weight: 700;
  padding: 0.25rem 0.5rem;
  border-radius: 4px;
  vertical-align: middle;
  margin-left: 0.5rem;
}

.ai-spec-table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 2rem;
  background-color: var(--bg-secondary);
  border-radius: 8px;
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border-color);
}

.ai-spec-table th, .ai-spec-table td {
  padding: 1rem;
  text-align: left;
  border-bottom: 1px solid var(--border-color);
}

.ai-spec-table th {
  background-color: var(--bg-tertiary);
  font-family: var(--font-heading);
  font-weight: 700;
}

.ai-spec-table tr:last-child td {
  border-bottom: none;
}

.ai-spec-file {
  font-family: monospace;
  background: var(--bg-tertiary);
  padding: 0.2rem 0.4rem;
  border-radius: 4px;
  font-size: 0.85rem;
}

/* --- Footer --- */
footer {
  margin-top: auto;
  background-color: var(--bg-secondary);
  border-top: 1px solid var(--border-color);
  padding: 4rem 0 2rem 0;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr repeat(3, 1fr);
  gap: 3rem;
  margin-bottom: 3rem;
}

.footer-about p {
  font-size: 0.9rem;
  color: var(--text-secondary);
  margin-top: 1rem;
  max-width: 320px;
}

.footer-links-title {
  font-family: var(--font-heading);
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 1.25rem;
}

.footer-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.footer-links a {
  font-size: 0.9rem;
  color: var(--text-secondary);
}

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

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

.footer-copy {
  font-size: 0.85rem;
  color: var(--text-muted);
}

.footer-ai-status {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.8rem;
  color: var(--text-secondary);
}

.footer-ai-status .status-dot {
  width: 8px;
  height: 8px;
  background-color: #10b981;
  border-radius: 50%;
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.7); }
  70% { transform: scale(1); box-shadow: 0 0 0 6px rgba(16, 185, 129, 0); }
  100% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(16, 185, 129, 0); }
}

/* --- Mobile Nav Overlay --- */
.mobile-nav {
  position: fixed;
  top: 80px;
  left: 0;
  width: 100%;
  background-color: var(--bg-secondary);
  border-bottom: 1px solid var(--border-color);
  padding: 2rem;
  display: none;
  flex-direction: column;
  gap: 1.5rem;
  box-shadow: var(--shadow-lg);
  z-index: 99;
}

.mobile-nav.open {
  display: flex;
}

.mobile-nav a {
  font-size: 1.1rem;
  font-weight: 600;
}

/* --- Responsive Adjustments --- */
@media (max-width: 1024px) {
  .products-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .hero-grid {
    grid-template-columns: 1fr;
    gap: 3rem;
  }
  .hero-content h1 {
    font-size: 2.75rem;
  }
  .products-grid {
    grid-template-columns: 1fr;
  }
  .contact-grid {
    grid-template-columns: 1fr;
    gap: 3rem;
  }
  .tech-grid {
    grid-template-columns: 1fr;
  }
  .timeline::before {
    left: 20px;
  }
  .timeline-item {
    width: 100%;
    padding-left: 3rem;
    padding-right: 0 !important;
    text-align: left !important;
  }
  .timeline-item:nth-child(even) {
    left: 0;
  }
  .timeline-badge {
    left: 10px !important;
    right: auto !important;
  }
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
  .nav-menu {
    display: none;
  }
  .mobile-menu-btn {
    display: block;
  }
}