/* Nexus Precision Design System */
:root {
  --surface: #f8f9ff;
  --surface-dim: #cbdbf5;
  --surface-bright: #f8f9ff;
  --surface-container-lowest: #ffffff;
  --surface-container-low: #eff4ff;
  --surface-container: #e5eeff;
  --surface-container-high: #dce9ff;
  --surface-container-highest: #d3e4fe;
  --on-surface: #0b1c30;
  --on-surface-variant: #45464d;
  --inverse-surface: #213145;
  --inverse-on-surface: #eaf1ff;
  --outline: #76767d;
  --outline-variant: #c6c6cd;
  --surface-tint: #565e74;
  --primary: #0f172a;
  --on-primary: #ffffff;
  --primary-container: #131b2e;
  --on-primary-container: #7c839b;
  --inverse-primary: #bec6e0;
  --secondary: #3b82f6;
  --on-secondary: #ffffff;
  --secondary-container: #2563eb;
  --on-secondary-container: #fefcff;
  --tertiary: #0d9488;
  --on-tertiary: #ffffff;
  --tertiary-container: #00201d;
  --on-tertiary-container: #0c9488;
  --error: #ba1a1a;
  --on-error: #ffffff;
  --error-container: #ffdad6;
  --on-error-container: #93000a;
  --primary-fixed: #dae2fd;
  --primary-fixed-dim: #bec6e0;
  --on-primary-fixed: #131b2e;
  --on-primary-fixed-variant: #3f465c;
  --secondary-fixed: #d8e2ff;
  --secondary-fixed-dim: #adc6ff;
  --on-secondary-fixed: #001a42;
  --on-secondary-fixed-variant: #004395;
  --tertiary-fixed: #89f5e7;
  --tertiary-fixed-dim: #6bd8cb;
  --on-tertiary-fixed: #00201d;
  --on-tertiary-fixed-variant: #005049;
  --background: #f8fafc;
  --on-background: #0b1c30;
  --surface-variant: #d3e4fe;

  /* Typography */
  --display-lg: 48px / 56px 'Inter', sans-serif;
  --display-lg-mobile: 32px / 40px 'Inter', sans-serif;
  --headline-md: 30px / 38px 'Inter', sans-serif;
  --headline-sm: 24px / 32px 'Inter', sans-serif;
  --body-lg: 18px / 28px 'Inter', sans-serif;
  --body-md: 16px / 24px 'Inter', sans-serif;
  --label-md: 14px / 20px 'Inter', sans-serif;
  --label-sm: 12px / 16px 'Inter', sans-serif;

  /* Spacing */
  --container-max: 1200px;
  --gutter: 24px;
  --margin-mobile: 16px;
  --margin-desktop: 40px;
  --stack-xs: 4px;
  --stack-sm: 8px;
  --stack-md: 16px;
  --stack-lg: 32px;

  /* Border Radius */
  --rounded-sm: 0.25rem;
  --rounded: 0.5rem;
  --rounded-md: 0.75rem;
  --rounded-lg: 1rem;
  --rounded-xl: 1.5rem;
  --rounded-full: 9999px;
}

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

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  background-color: var(--background);
  color: var(--on-background);
  line-height: 1.6;
  overflow-x: hidden;
}

.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--gutter);
}

.header {
  position: sticky;
  top: 0;
  background-color: var(--surface-container-lowest);
  backdrop-filter: blur(10px);
  box-shadow: 0 4px 20px rgba(15, 23, 42, 0.05);
  z-index: 1000;
}

.header-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--stack-md) 0;
}

.logo {
  font-size: var(--headline-sm);
  font-weight: 800;
  color: var(--primary);
  text-decoration: none;
  letter-spacing: -0.02em;
}

.nav {
  display: flex;
  gap: var(--stack-lg);
}

.nav-link {
  color: var(--on-surface-variant);
  text-decoration: none;
  font: var(--label-md);
  font-weight: 500;
  transition: color 0.2s ease;
}

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

.cta-button {
  background-color: var(--primary);
  color: var(--on-primary);
  padding: var(--stack-md) var(--stack-lg);
  border-radius: var(--rounded);
  text-decoration: none;
  font: var(--label-md);
  font-weight: 600;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.cta-button:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 25px rgba(15, 23, 42, 0.1);
}

.hero {
  background:
    linear-gradient(135deg, rgba(15, 23, 42, 0.2) 0%, rgba(15, 23, 42, 0.25) 100%),
    url('https://images.unsplash.com/photo-1486406146926-c627a92ad1ab?q=80&w=2070&auto=format&fit=crop');
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  padding: 100px 0;
  text-align: center;
  color: #ffffff;
}

.hero-content {
  max-width: 900px;
  margin: 0 auto;
  padding: 0 var(--stack-md);
}

.hero-title {
  font: var(--display-lg);
  font-weight: 700;
  margin-bottom: var(--stack-lg);
  letter-spacing: -0.02em;
}

.hero-subtitle {
  font: var(--body-lg);
  color: rgba(255,255,255,0.9);
  margin-bottom: var(--stack-lg);
  line-height: 1.7;
}

.hero-buttons {
  display: flex;
  gap: var(--stack-md);
  justify-content: center;
  flex-wrap: wrap;
}

.cta-primary {
  background-color: var(--secondary);
  color: var(--on-secondary);
  padding: 16px 32px;
  border-radius: var(--rounded);
  text-decoration: none;
  font: var(--body-md);
  font-weight: 600;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.cta-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 30px rgba(59, 130, 246, 0.25);
}

.cta-secondary {
  background-color: rgba(255,255,255,0.2);
  color: #ffffff;
  padding: 16px 32px;
  border-radius: var(--rounded);
  text-decoration: none;
  font: var(--body-md);
  font-weight: 600;
  border: 2px solid rgba(255,255,255,0.5);
  backdrop-filter: blur(4px);
  transition: background 0.2s ease, color 0.2s ease;
}

.cta-secondary:hover {
  background-color: rgba(255,255,255,0.3);
}

.about {
  padding: var(--stack-lg) 0;
  background-color: var(--surface-container-lowest);
}

.about-content {
  max-width: 800px;
  margin: 0 auto;
  text-align: center;
}

.section-title {
  font: var(--headline-md);
  font-weight: 700;
  color: var(--primary);
  margin-bottom: var(--stack-lg);
  letter-spacing: -0.01em;
}

.about-text {
  font: var(--body-lg);
  color: var(--on-surface-variant);
  line-height: 1.8;
}

.brands {
  padding: var(--stack-lg) 0;
  background-color: var(--surface);
}

.brands .section-title {
  text-align: center;
  margin-bottom: var(--stack-lg);
}

.brands-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--stack-lg);
}

.brand-card {
  background-color: var(--surface-container-lowest);
  padding: var(--stack-lg);
  border-radius: var(--rounded-lg);
  box-shadow: 0 4px 20px rgba(15, 23, 42, 0.05);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.brand-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 20px 35px rgba(15, 23, 42, 0.1);
}

.brand-title {
  font: var(--headline-sm);
  font-weight: 700;
  color: var(--primary);
  margin-bottom: var(--stack-sm);
  line-height: 1.2;
}

.brand-badge {
  display: inline-block;
  background-color: rgba(13, 148, 136, 0.1);
  color: var(--tertiary);
  padding: 6px 16px;
  border-radius: var(--rounded-xl);
  font: var(--label-sm);
  font-weight: 600;
  margin-bottom: var(--stack-md);
}

.brand-description {
  font: var(--body-md);
  color: var(--on-surface-variant);
  margin-bottom: var(--stack-md);
  line-height: 1.7;
}

.brand-features {
  list-style: none;
  margin-bottom: var(--stack-lg);
}

.brand-features li {
  font: var(--body-md);
  color: var(--on-surface);
  padding: var(--stack-sm) 0;
  padding-left: 28px;
  position: relative;
  line-height: 1.6;
}

.brand-features li::before {
  content: '✓';
  position: absolute;
  left: 0;
  color: var(--tertiary);
  font-weight: 700;
}

.brand-cta {
  color: var(--secondary);
  font: var(--label-md);
  font-weight: 600;
  text-decoration: none;
  transition: color 0.2s ease;
}

.brand-cta:hover {
  color: var(--secondary-container);
}

.investors {
  padding: var(--stack-lg) 0;
  background-color: var(--primary);
  color: var(--on-primary);
}

.investors-content {
  max-width: 800px;
  margin: 0 auto;
  text-align: center;
  padding: 0 var(--stack-md);
}

.investors .section-title {
  color: var(--on-primary);
  margin-bottom: var(--stack-sm);
}

.investors-subtitle {
  font: var(--headline-sm);
  font-weight: 700;
  margin-bottom: var(--stack-md);
}

.investors-text {
  font: var(--body-lg);
  margin-bottom: var(--stack-lg);
  line-height: 1.8;
  opacity: 0.95;
}

.investors-cta {
  background-color: var(--tertiary);
  color: var(--on-tertiary);
  padding: 16px 32px;
  border-radius: var(--rounded);
  text-decoration: none;
  font: var(--body-md);
  font-weight: 600;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
  display: inline-block;
}

.investors-cta:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 30px rgba(13, 148, 136, 0.25);
}

.contact {
  padding: var(--stack-lg) 0;
  background-color: var(--surface-container-lowest);
}

.contact .section-title {
  text-align: center;
  margin-bottom: var(--stack-lg);
}

.contact-form {
  max-width: 700px;
  margin: 0 auto;
  padding: 0 var(--stack-md);
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--stack-md);
  margin-bottom: var(--stack-md);
}

.form-input,
.form-textarea {
  width: 100%;
  padding: 16px;
  background-color: #f1f5f9;
  border: 1px solid var(--outline-variant);
  border-radius: var(--rounded);
  font: var(--body-md);
  font-family: 'Inter', sans-serif;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.form-input:focus,
.form-textarea:focus {
  outline: none;
  border-color: var(--secondary);
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

.form-textarea {
  min-height: 140px;
  resize: vertical;
  margin-bottom: var(--stack-md);
}

.submit-button {
  width: 100%;
  background-color: var(--secondary);
  color: var(--on-secondary);
  padding: 16px 32px;
  border: none;
  border-radius: var(--rounded);
  font: var(--body-md);
  font-weight: 600;
  cursor: pointer;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.submit-button:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 30px rgba(59, 130, 246, 0.25);
}

.footer {
  background-color: var(--primary);
  color: var(--on-primary);
  padding: var(--stack-lg) 0;
}

.footer-content {
  text-align: center;
  padding: 0 var(--stack-md);
}

.footer-copyright {
  font: var(--label-md);
  opacity: 0.8;
  margin-bottom: var(--stack-md);
}

.footer-nav {
  display: flex;
  gap: var(--stack-md);
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: var(--stack-md);
}

.footer-link {
  color: rgba(255, 255, 255, 0.8);
  text-decoration: none;
  font: var(--label-md);
  transition: color 0.2s ease;
}

.footer-link:hover {
  color: var(--tertiary);
}

.footer-legal,
.footer-compliance {
  font: var(--label-md);
  line-height: 1.6;
  margin-top: var(--stack-sm);
  opacity: 0.7;
}

@media (max-width: 968px) {
  .nav {
    display: none;
  }

  .hero {
    padding: 80px 0;
  }

  .hero-title {
    font: var(--display-lg-mobile);
  }

  .section-title {
    font: var(--headline-sm);
  }

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

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

@media (max-width: 640px) {
  .container {
    padding: 0 var(--stack-md);
  }

  .header-content {
    padding: var(--stack-md) 0;
    gap: var(--stack-md);
  }

  .logo {
    font-size: 18px;
  }

  .cta-button {
    padding: 8px 16px;
    font-size: 13px;
  }

  .hero {
    padding: 60px 0;
  }

  .hero-title {
    font: var(--display-lg-mobile);
    margin-bottom: var(--stack-md);
  }

  .hero-subtitle {
    font-size: 16px;
    margin-bottom: var(--stack-md);
  }

  .hero-buttons {
    gap: var(--stack-sm);
  }

  .cta-primary, .cta-secondary {
    padding: var(--stack-sm) var(--stack-lg);
    font-size: 14px;
    width: 100%;
  }

  .section-title {
    font: var(--headline-sm);
    margin-bottom: var(--stack-md);
  }

  .brand-card, .about-content {
    padding: var(--stack-md);
  }

  .form-input, .form-textarea {
    padding: var(--stack-sm);
  }
}