/* Lycopene Health Guide - Tech-Inspired Design */

:root {
  --color-bg: #0a0a0a;
  --color-surface: #1a1a1a;
  --color-surface-elevated: #252525;
  --color-border: #333333;
  --color-accent: #ff3b30;
  --color-accent-secondary: #ff6b5e;
  --color-text-primary: #ffffff;
  --color-text-secondary: #a0a0a0;
  --color-highlight: #ff453a;
  --font-display: 'SF Pro Display', -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
  --font-body: -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
}

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

body {
  font-family: var(--font-body);
  background: var(--color-bg);
  color: var(--color-text-primary);
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Navigation */
nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(10, 10, 10, 0.8);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--color-border);
}

.nav-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 1rem 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 700;
  background: linear-gradient(135deg, var(--color-accent) 0%, var(--color-accent-secondary) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  letter-spacing: -0.02em;
}

.nav-links {
  display: flex;
  gap: 2rem;
  list-style: none;
}

.nav-links a {
  color: var(--color-text-secondary);
  text-decoration: none;
  font-size: 0.95rem;
  font-weight: 500;
  transition: color 0.3s ease;
  letter-spacing: -0.01em;
}

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

/* Hero Section */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
  padding: 6rem 2rem 4rem;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background:
    radial-gradient(circle at 20% 50%, rgba(255, 59, 48, 0.15) 0%, transparent 50%),
    radial-gradient(circle at 80% 50%, rgba(255, 107, 94, 0.1) 0%, transparent 50%);
  z-index: 0;
}

.hero-content {
  max-width: 1000px;
  text-align: center;
  position: relative;
  z-index: 1;
  animation: fadeInUp 1s ease-out;
}

.hero-title {
  font-family: var(--font-display);
  font-size: clamp(3rem, 8vw, 6rem);
  font-weight: 800;
  line-height: 1.1;
  margin-bottom: 1.5rem;
  letter-spacing: -0.04em;
  background: linear-gradient(135deg, #ffffff 0%, #ff3b30 50%, #ff6b5e 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subtitle {
  font-size: clamp(1.25rem, 2.5vw, 1.75rem);
  color: var(--color-text-secondary);
  margin-bottom: 3rem;
  font-weight: 400;
  letter-spacing: -0.01em;
}

.molecule-visual {
  display: inline-block;
  width: 120px;
  height: 120px;
  margin: 2rem 0;
  position: relative;
  animation: float 6s ease-in-out infinite;
}

.molecule-visual svg {
  width: 100%;
  height: 100%;
  filter: drop-shadow(0 0 30px rgba(255, 59, 48, 0.5));
}

/* Content Sections */
section {
  max-width: 1200px;
  margin: 0 auto;
  padding: 5rem 2rem;
  position: relative;
}

.section-header {
  text-align: center;
  margin-bottom: 4rem;
}

.section-title {
  font-family: var(--font-display);
  font-size: clamp(2.5rem, 5vw, 4rem);
  font-weight: 800;
  margin-bottom: 1rem;
  letter-spacing: -0.03em;
  color: var(--color-text-primary);
}

.section-subtitle {
  font-size: 1.25rem;
  color: var(--color-text-secondary);
  max-width: 600px;
  margin: 0 auto;
}

/* Benefits Grid */
.benefits-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
}

.benefit-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 16px;
  padding: 2.5rem;
  transition: all 0.4s ease;
  position: relative;
  overflow: hidden;
}

.benefit-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--color-accent) 0%, var(--color-accent-secondary) 100%);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.4s ease;
}

.benefit-card:hover {
  transform: translateY(-8px);
  border-color: var(--color-accent);
  box-shadow: 0 20px 60px rgba(255, 59, 48, 0.2);
}

.benefit-card:hover::before {
  transform: scaleX(1);
}

.benefit-icon {
  font-size: 3rem;
  margin-bottom: 1.5rem;
  display: block;
}

.benefit-title {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 1rem;
  letter-spacing: -0.02em;
}

.benefit-description {
  color: var(--color-text-secondary);
  line-height: 1.7;
  font-size: 1rem;
}

/* Sources Section */
.sources-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
  gap: 3rem;
  margin-top: 3rem;
}

.source-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 20px;
  overflow: hidden;
  transition: all 0.4s ease;
}

.source-card:hover {
  transform: translateY(-8px);
  border-color: var(--color-accent);
  box-shadow: 0 20px 60px rgba(255, 59, 48, 0.2);
}

.source-image {
  width: 100%;
  height: 280px;
  object-fit: cover;
  border-bottom: 1px solid var(--color-border);
}

.source-content {
  padding: 2rem;
}

.source-title {
  font-family: var(--font-display);
  font-size: 2rem;
  font-weight: 700;
  margin-bottom: 1rem;
  letter-spacing: -0.02em;
  color: var(--color-accent);
}

.source-amount {
  font-size: 1.1rem;
  color: var(--color-text-secondary);
  margin-bottom: 1rem;
  font-weight: 600;
}

.source-description {
  color: var(--color-text-secondary);
  line-height: 1.7;
  margin-bottom: 1.5rem;
}

.source-list {
  list-style: none;
  margin-top: 1rem;
}

.source-list li {
  padding: 0.75rem 0;
  border-top: 1px solid var(--color-border);
  color: var(--color-text-secondary);
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.source-list li::before {
  content: '→';
  color: var(--color-accent);
  font-weight: 700;
  font-size: 1.2rem;
}

/* Science Section */
.science-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
}

.science-text h3 {
  font-family: var(--font-display);
  font-size: 2rem;
  font-weight: 700;
  margin-bottom: 1.5rem;
  letter-spacing: -0.02em;
}

.science-text p {
  color: var(--color-text-secondary);
  line-height: 1.8;
  margin-bottom: 1.5rem;
  font-size: 1.1rem;
}

.science-image {
  width: 100%;
  height: 400px;
  object-fit: cover;
  border-radius: 20px;
  border: 1px solid var(--color-border);
}

/* Footer */
footer {
  background: var(--color-surface);
  border-top: 1px solid var(--color-border);
  padding: 3rem 2rem;
  text-align: center;
}

.footer-content {
  max-width: 1200px;
  margin: 0 auto;
}

footer p {
  color: var(--color-text-secondary);
  font-size: 0.95rem;
}

/* Animations */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes float {
  0%, 100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-20px);
  }
}

/* Responsive */
@media (max-width: 768px) {
  .nav-links {
    gap: 1rem;
  }

  .nav-links a {
    font-size: 0.85rem;
  }

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

  .science-content {
    grid-template-columns: 1fr;
  }

  section {
    padding: 3rem 1.5rem;
  }
}