/* === LexLum v.2 Design Tokens === */

/* Colors */
:root {
  --color-bg-base: #0B1020;
  --color-bg-gradient: linear-gradient(135deg, #06203B 0%, #0E042B 100%);
  --color-accent-cyan: #00F0FF;
  --color-accent-purple: #7C3AED;
  --color-accent-gold: #FFC857;
  --color-text-main: #E9F0FF;
  --color-text-secondary: #9FB0D9;
  --color-glass-bg: rgba(255, 255, 255, 0.04);
  --color-glass-border: rgba(255, 255, 255, 0.06);
  --color-shadow-soft: rgba(2, 6, 23, 0.6);
  --color-shadow-neon-purple: rgba(124, 58, 237, 0.12);
  --color-shadow-neon-cyan: rgba(0, 240, 255, 0.06);
  --color-error: #FF6B6B;
}

/* Spacing (base 8px) */
:root {
  --space-xxs: 4px;
  --space-xs: 8px;
  --space-sm: 12px;
  --space-md: 16px;
  --space-lg: 24px;
  --space-xl: 32px;
  --space-xxl: 48px;
  --space-xxxl: 64px;
  --space-xxxxl: 96px;
  --space-xxxxxl: 128px;
}

/* Typography */
body {
  font-family: 'Inter', 'SF Pro Text', -apple-system, system-ui, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  background-color: var(--color-bg-base);
  color: var(--color-text-main);
  margin: 0;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Headings */
h1 {
  font-size: 64px;
  font-weight: 700;
  line-height: 1.1;
  margin: var(--space-lg) 0 var(--space-md);
}

@media (max-width: 768px) {
  h1 {
    font-size: 36px;
  }
}

h2 {
  font-size: 36px;
  font-weight: 600;
  line-height: 1.1;
  margin: var(--space-md) 0 var(--space-sm);
}

@media (max-width: 768px) {
  h2 {
    font-size: 24px;
  }
}

h3 {
  font-size: 24px;
  font-weight: 600;
  line-height: 1.2;
  margin: var(--space-sm) 0 var(--space-xs);
}

@media (max-width: 768px) {
  h3 {
    font-size: 18px;
  }
}

.lead {
  font-size: 18px;
  font-weight: 400;
  line-height: 1.45;
  color: var(--color-text-secondary);
  margin-bottom: var(--space-md);
}

@media (max-width: 768px) {
  .lead {
    font-size: 16px;
  }
}

p {
  font-size: 16px;
  font-weight: 400;
  line-height: 1.5;
  margin-bottom: var(--space-md);
  color: var(--color-text-main);
}

@media (max-width: 768px) {
  p {
    font-size: 15px;
  }
}

/* Container & Grid */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-xxxxl);
}

@media (max-width: 768px) {
  .container {
    padding: 0 var(--space-lg);
  }
}

/* Grid columns */
.row {
  display: flex;
  flex-wrap: wrap;
  margin-left: calc(-1 * var(--space-md));
  margin-right: calc(-1 * var(--space-md));
}

.col-4 {
  flex: 0 0 33.3333%;
  max-width: 33.3333%;
  padding-left: var(--space-md);
  padding-right: var(--space-md);
}

@media (max-width: 768px) {
  .col-4 {
    flex: 0 0 100%;
    max-width: 100%;
    padding-left: 0;
    padding-right: 0;
    margin-bottom: var(--space-lg);
  }
}

/* Glassmorphism Card */
.card-glass {
  background: var(--color-glass-bg);
  border: 1px solid var(--color-glass-border);
  backdrop-filter: blur(8px);
  border-radius: 16px;
  box-shadow: 0 8px 30px var(--color-shadow-soft);
  padding: var(--space-lg);
  color: var(--color-text-main);
  transition: box-shadow 0.3s ease;
}

.card-glass:hover {
  box-shadow: 0 12px 40px var(--color-shadow-neon-purple);
}

/* Buttons - Primary CTA */
.btn-primary {
  display: inline-block;
  padding: 14px 28px;
  border-radius: 14px;
  font-weight: 600;
  font-size: 16px;
  background: linear-gradient(90deg, var(--color-accent-cyan), var(--color-accent-purple));
  color: #061025;
  box-shadow: 0 8px 30px var(--color-shadow-neon-purple);
  border: none;
  cursor: pointer;
  transition: transform 0.18s cubic-bezier(0.4, 0, 0.2, 1), box-shadow 0.18s cubic-bezier(0.4, 0, 0.2, 1);
  user-select: none;
  text-align: center;
  text-decoration: none;
  line-height: 1;
}

.btn-primary:hover,
.btn-primary:focus {
  transform: translateY(-2px) scale(1.02);
  box-shadow: 0 12px 40px var(--color-shadow-neon-purple);
  outline: none;
}

.btn-primary:active {
  transform: scale(0.98);
}

/* Secondary Button */
.btn-secondary {
  display: inline-block;
  padding: 14px 28px;
  border-radius: 14px;
  font-weight: 600;
  font-size: 16px;
  background: transparent;
  color: var(--color-accent-cyan);
  border: 2px solid var(--color-accent-cyan);
  cursor: pointer;
  transition: background-color 0.3s ease, color 0.3s ease;
  user-select: none;
  text-align: center;
  text-decoration: none;
  line-height: 1;
}

.btn-secondary:hover,
.btn-secondary:focus {
  background-color: var(--color-accent-cyan);
  color: #061025;
  outline: none;
}

/* Navbar */
.navbar {
  position: sticky;
  top: 0;
  width: 100%;
  height: 72px;
  background: rgba(11,16,32,0.75);
  backdrop-filter: saturate(180%) blur(20px);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 var(--space-xxxxl);
  z-index: 1000;
  box-shadow: 0 0 20px rgba(0, 0, 0, 0.8);
}

@media (max-width: 768px) {
  .navbar {
    height: 56px;
    padding: 0 var(--space-lg);
  }
}

/* Hero Section */
.hero {
  min-height: 600px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 var(--space-xxxxl);
  background: var(--color-bg-gradient);
  position: relative;
  overflow: hidden;
  color: var(--color-text-main);
}

@media (max-width: 768px) {
  .hero {
    flex-direction: column;
    min-height: auto;
    padding: var(--space-xl) var(--space-lg);
  }
}

.hero-text {
  max-width: 600px;
}

.hero h1 {
  margin-bottom: var(--space-md);
}

.hero p {
  margin-bottom: var(--space-xl);
  font-size: 20px;
  font-weight: 500;
  color: var(--color-text-secondary);
}

.hero-buttons {
  display: flex;
  gap: var(--space-md);
}

/* Hero Animation placeholder */
.hero-animation {
  max-width: 480px;
  max-height: 480px;
  width: 100%;
  height: auto;
  filter: drop-shadow(0 0 10px var(--color-accent-cyan));
}

/* Fade-Up animation */
.fade-up {
  opacity: 0;
  transform: translateY(12px);
  transition: opacity 0.48s cubic-bezier(0.22, 1, 0.36, 1), transform 0.48s cubic-bezier(0.22, 1, 0.36, 1);
}

.fade-up.in-view {
  opacity: 1;
  transform: translateY(0);
}

/* Cards Container */
.cards-row {
  display: flex;
  gap: var(--space-xl);
  margin: var(--space-xxxl) 0;
  flex-wrap: wrap;
  justify-content: center;
}

@media (max-width: 768px) {
  .cards-row {
    flex-direction: column;
    gap: var(--space-lg);
  }
}

/* Card Content */
.card-title {
  font-size: 22px;
  font-weight: 600;
  margin-bottom: var(--space-sm);
  color: var(--color-text-main);
}

.card-subtitle {
  font-size: 16px;
  font-weight: 400;
  color: var(--color-text-secondary);
  margin-bottom: var(--space-md);
}

/* Case video thumbnails */
.case-thumb {
  width: 100%;
  border-radius: 16px;
  box-shadow: 0 8px 30px var(--color-shadow-soft);
  cursor: pointer;
  transition: transform 0.3s ease;
}

.case-thumb:hover {
  transform: scale(1.05);
}

/* Footer */
.footer {
  background: rgba(11, 16, 32, 0.9);
  padding: var(--space-xxxl) var(--space-xxxxl);
  color: var(--color-text-secondary);
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  font-size: 14px;
  user-select: none;
}

.footer a {
  color: var(--color-accent-cyan);
  text-decoration: none;
  margin-right: var(--space-md);
  transition: color 0.3s ease;
}

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

/* Utility Classes */
.text-center {
  text-align: center;
}

.mt-lg {
  margin-top: var(--space-xxxl);
}

/* Scrollbar styling for dark theme */
::-webkit-scrollbar {
  width: 8px;
}

::-webkit-scrollbar-track {
  background: var(--color-bg-base);
}

::-webkit-scrollbar-thumb {
  background-color: var(--color-accent-purple);
  border-radius: 8px;
}

/* Accessibility Focus */
:focus-visible {
  outline: 2px solid var(--color-accent-cyan);
  outline-offset: 2px;
}