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

:root {
  --primary: #1a56db;
  --primary-dark: #1040a0;
  --secondary: #7c3aed;
  --accent: #059669;
  --text: #1f2937;
  --text-light: #6b7280;
  --bg: #ffffff;
  --bg-alt: #f3f4f6;
  --bg-dark: #111827;
  --border: #e5e7eb;
  --radius: 8px;
  --shadow: 0 1px 3px rgba(0, 0, 0, 0.1), 0 1px 2px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
  --transition: 0.3s ease;
}

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

body {
  font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

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

a:hover {
  color: var(--primary-dark);
}

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

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

/* Header */
.site-header {
  background: var(--bg);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 100;
  padding: 0 24px;
}

.header-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
}

.logo {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--primary);
  display: flex;
  align-items: center;
  gap: 8px;
}

.logo-icon {
  width: 32px;
  height: 32px;
  background: var(--primary);
  border-radius: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-weight: 800;
  font-size: 1rem;
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 32px;
}

.main-nav a {
  color: var(--text);
  font-size: 0.95rem;
  font-weight: 500;
  transition: color var(--transition);
}

.main-nav a:hover {
  color: var(--primary);
}

.nav-cta {
  background: var(--primary);
  color: #fff !important;
  padding: 10px 24px;
  border-radius: var(--radius);
  font-weight: 600;
  transition: background var(--transition);
}

.nav-cta:hover {
  background: var(--primary-dark) !important;
  color: #fff !important;
}

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

/* Hero */
.hero {
  background: linear-gradient(135deg, #eef2ff 0%, #e0e7ff 50%, #dbeafe 100%);
  padding: 80px 24px 96px;
  text-align: center;
}

.hero h1 {
  font-size: 3rem;
  font-weight: 800;
  color: var(--bg-dark);
  max-width: 800px;
  margin: 0 auto 20px;
  line-height: 1.15;
}

.hero p {
  font-size: 1.2rem;
  color: var(--text-light);
  max-width: 600px;
  margin: 0 auto 36px;
  line-height: 1.7;
}

.hero-actions {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}

.btn-primary {
  background: var(--primary);
  color: #fff;
  padding: 14px 32px;
  border-radius: var(--radius);
  font-weight: 600;
  font-size: 1rem;
  border: none;
  cursor: pointer;
  transition: background var(--transition), transform 0.15s ease;
  display: inline-block;
}

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

.btn-secondary {
  background: var(--bg);
  color: var(--primary);
  padding: 14px 32px;
  border-radius: var(--radius);
  font-weight: 600;
  font-size: 1rem;
  border: 2px solid var(--primary);
  cursor: pointer;
  transition: all var(--transition);
  display: inline-block;
}

.btn-secondary:hover {
  background: var(--primary);
  color: #fff;
}

/* Sections */
.section {
  padding: 80px 24px;
}

.section-alt {
  background: var(--bg-alt);
}

.section-title {
  font-size: 2.2rem;
  font-weight: 700;
  text-align: center;
  margin-bottom: 16px;
  color: var(--bg-dark);
}

.section-subtitle {
  text-align: center;
  color: var(--text-light);
  font-size: 1.1rem;
  max-width: 600px;
  margin: 0 auto 48px;
}

/* Features Grid */
.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
  max-width: 1200px;
  margin: 0 auto;
}

.feature-card {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 32px;
  transition: box-shadow var(--transition), transform 0.2s ease;
}

.feature-card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-4px);
}

.feature-icon {
  width: 48px;
  height: 48px;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  margin-bottom: 20px;
}

.icon-blue { background: #dbeafe; color: var(--primary); }
.icon-purple { background: #ede9fe; color: var(--secondary); }
.icon-green { background: #d1fae5; color: var(--accent); }
.icon-orange { background: #ffedd5; color: #ea580c; }
.icon-red { background: #fee2e2; color: #dc2626; }
.icon-teal { background: #ccfbf1; color: #0d9488; }

.feature-card h3 {
  font-size: 1.25rem;
  margin-bottom: 12px;
  color: var(--bg-dark);
}

.feature-card p {
  color: var(--text-light);
  line-height: 1.6;
}

/* Image Row */
.image-row {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 32px;
  max-width: 1200px;
  margin: 0 auto;
}

.image-card {
  border-radius: 12px;
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: box-shadow var(--transition);
}

.image-card:hover {
  box-shadow: var(--shadow-lg);
}

.image-card img {
  width: 100%;
  height: 280px;
  object-fit: cover;
}

.image-card-body {
  padding: 24px;
  background: var(--bg);
}

.image-card-body h3 {
  font-size: 1.15rem;
  margin-bottom: 8px;
}

.image-card-body p {
  color: var(--text-light);
  font-size: 0.95rem;
}

/* Stats */
.stats-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  max-width: 1000px;
  margin: 0 auto;
}

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

.stat-number {
  font-size: 2.5rem;
  font-weight: 800;
  color: var(--primary);
}

.stat-label {
  color: var(--text-light);
  margin-top: 4px;
}

/* CTA Section */
.cta-section {
  background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
  padding: 80px 24px;
  text-align: center;
  color: #fff;
}

.cta-section h2 {
  font-size: 2.2rem;
  font-weight: 700;
  margin-bottom: 16px;
}

.cta-section p {
  font-size: 1.15rem;
  opacity: 0.9;
  margin-bottom: 32px;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

.btn-white {
  background: #fff;
  color: var(--primary);
  padding: 14px 36px;
  border-radius: var(--radius);
  font-weight: 600;
  font-size: 1rem;
  border: none;
  cursor: pointer;
  transition: all var(--transition);
  display: inline-block;
}

.btn-white:hover {
  background: #f3f4f6;
  color: var(--primary-dark);
  transform: translateY(-1px);
}

/* Login Form */
.login-section {
  max-width: 480px;
  margin: 60px auto;
  padding: 0 24px;
}

.login-card {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 40px;
  box-shadow: var(--shadow-lg);
}

.login-card h2 {
  font-size: 1.5rem;
  margin-bottom: 8px;
  text-align: center;
}

.login-card .login-subtitle {
  color: var(--text-light);
  text-align: center;
  margin-bottom: 32px;
}

.form-group {
  margin-bottom: 20px;
}

.form-group label {
  display: block;
  font-weight: 600;
  margin-bottom: 6px;
  font-size: 0.9rem;
  color: var(--text);
}

.form-group input {
  width: 100%;
  padding: 12px 16px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-size: 1rem;
  transition: border-color var(--transition);
  outline: none;
  font-family: inherit;
}

.form-group input:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(26, 86, 219, 0.15);
}

.form-actions {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 20px;
}

.checkbox-label {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.9rem;
  color: var(--text-light);
  cursor: pointer;
}

.forgot-link {
  font-size: 0.9rem;
}

.btn-login {
  width: 100%;
  padding: 14px;
  background: var(--primary);
  color: #fff;
  border: none;
  border-radius: var(--radius);
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: background var(--transition);
}

.btn-login:hover {
  background: var(--primary-dark);
}

/* Footer */
.site-footer {
  background: var(--bg-dark);
  color: #d1d5db;
  padding: 64px 24px 32px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 48px;
  max-width: 1200px;
  margin: 0 auto 48px;
}

.footer-brand {
  font-size: 1.35rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 16px;
}

.footer-desc {
  color: #9ca3af;
  line-height: 1.7;
  font-size: 0.95rem;
}

.footer-heading {
  color: #fff;
  font-weight: 600;
  margin-bottom: 16px;
  font-size: 0.95rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.footer-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-links a {
  color: #9ca3af;
  font-size: 0.9rem;
  transition: color var(--transition);
}

.footer-links a:hover {
  color: #fff;
}

.footer-bottom {
  border-top: 1px solid #374151;
  padding-top: 24px;
  text-align: center;
  color: #6b7280;
  font-size: 0.85rem;
  max-width: 1200px;
  margin: 0 auto;
}

/* About Page */
.page-header {
  background: linear-gradient(135deg, #eef2ff 0%, #dbeafe 100%);
  padding: 60px 24px;
  text-align: center;
}

.page-header h1 {
  font-size: 2.5rem;
  font-weight: 800;
  color: var(--bg-dark);
  margin-bottom: 12px;
}

.page-header p {
  color: var(--text-light);
  font-size: 1.1rem;
  max-width: 600px;
  margin: 0 auto;
}

.content-block {
  max-width: 800px;
  margin: 0 auto;
  padding: 60px 24px;
}

.content-block h2 {
  font-size: 1.75rem;
  font-weight: 700;
  margin-bottom: 16px;
  color: var(--bg-dark);
}

.content-block p {
  color: var(--text-light);
  margin-bottom: 20px;
  line-height: 1.8;
}

.content-block ul {
  margin: 16px 0 24px 24px;
  color: var(--text-light);
  line-height: 1.8;
}

.content-block ul li {
  margin-bottom: 8px;
}

/* Privacy */
.legal-content {
  max-width: 800px;
  margin: 0 auto;
  padding: 60px 24px;
}

.legal-content h2 {
  font-size: 1.5rem;
  font-weight: 700;
  margin: 40px 0 12px;
  color: var(--bg-dark);
}

.legal-content h2:first-child {
  margin-top: 0;
}

.legal-content p {
  color: var(--text-light);
  margin-bottom: 16px;
  line-height: 1.8;
}

.legal-content ul {
  margin: 12px 0 20px 24px;
  color: var(--text-light);
  line-height: 1.8;
}

/* Responsive */
@media (max-width: 992px) {
  .features-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 32px;
  }

  .stats-row {
    grid-template-columns: repeat(2, 1fr);
    gap: 32px;
  }
}

@media (max-width: 768px) {
  .hero h1 {
    font-size: 2rem;
  }

  .hero p {
    font-size: 1rem;
  }

  .section-title {
    font-size: 1.75rem;
  }

  .main-nav {
    display: none;
  }

  .mobile-toggle {
    display: block;
  }

  .main-nav.active {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 68px;
    left: 0;
    right: 0;
    background: var(--bg);
    padding: 24px;
    border-bottom: 1px solid var(--border);
    box-shadow: var(--shadow-lg);
  }

  .features-grid {
    grid-template-columns: 1fr;
  }

  .image-row {
    grid-template-columns: 1fr;
  }

  .stats-row {
    grid-template-columns: 1fr 1fr;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }
}

@media (max-width: 480px) {
  .hero h1 {
    font-size: 1.65rem;
  }

  .hero-actions {
    flex-direction: column;
    align-items: center;
  }

  .stats-row {
    grid-template-columns: 1fr;
  }
}