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

:root {
  /* Premium Dark Mode Palette (Default) */
  --bg-primary: #0a0a0c;
  --bg-secondary: #131418;
  --bg-tertiary: #1b1c22;
  --bg-glass: rgba(19, 20, 24, 0.6);
  --bg-glass-hover: rgba(27, 28, 34, 0.8);
  
  --text-primary: #f8fafc;
  --text-secondary: #94a3b8;
  --text-tertiary: #64748b;
  
  --border-color: rgba(255, 255, 255, 0.05);
  --border-hover: rgba(255, 255, 255, 0.15);
  
  --accent-blue: #3b82f6;
  --accent-cyan: #06b6d4;
  --accent-purple: #8b5cf6;
  --accent-emerald: #10b981;
  --accent-orange: #f97316;
  
  /* Gradients */
  --gradient-primary: linear-gradient(135deg, #3b82f6, #06b6d4);
  --gradient-glow: conic-gradient(from 180deg at 50% 50%, #3b82f6 0deg, #8b5cf6 180deg, #06b6d4 360deg);
  
  --font-heading: 'Outfit', sans-serif;
  --font-body: 'Inter', sans-serif;
  
  --transition-smooth: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
  --transition-fast: all 0.2s ease;
  
  --shadow-glow: 0 0 20px rgba(59, 130, 246, 0.15);
  --shadow-glass: 0 8px 32px rgba(0, 0, 0, 0.3);
}

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

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

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

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 700;
  line-height: 1.2;
}

a {
  text-decoration: none;
  color: inherit;
}

/* Utilities */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 2rem;
}

.gradient-text {
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  display: inline-block;
}

.glass-card {
  background: var(--bg-glass);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--border-color);
  border-radius: 1.5rem;
  padding: 2.5rem;
  transition: var(--transition-smooth);
  position: relative;
  overflow: hidden;
}

.glass-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
  opacity: 0;
  transition: var(--transition-smooth);
}

.glass-card:hover {
  background: var(--bg-glass-hover);
  border-color: var(--border-hover);
  transform: translateY(-5px);
  box-shadow: var(--shadow-glow);
}

.glass-card:hover::before {
  opacity: 1;
}

/* Header */
header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 100;
  padding: 1.5rem 0;
  transition: var(--transition-smooth);
}

header.scrolled {
  padding: 1rem 0;
  background: rgba(10, 10, 12, 0.8);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border-color);
}

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

.logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: 1.5rem;
  letter-spacing: -0.5px;
}

.logo img {
  height: 32px;
  width: auto;
}

/* Button */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.875rem 2rem;
  border-radius: 9999px;
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: 1rem;
  transition: var(--transition-smooth);
  cursor: pointer;
  border: none;
  position: relative;
  overflow: hidden;
}

.btn-primary {
  background: var(--text-primary);
  color: var(--bg-primary);
}

.btn-primary:hover {
  transform: scale(1.05);
  box-shadow: 0 0 20px rgba(255, 255, 255, 0.2);
}

/* Hero Section */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  position: relative;
  padding-top: 5rem;
}

.hero-bg {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 800px;
  height: 800px;
  background: var(--gradient-glow);
  filter: blur(120px);
  opacity: 0.15;
  border-radius: 50%;
  z-index: -1;
  animation: pulse 10s ease-in-out infinite alternate;
}

@keyframes pulse {
  0% { transform: translate(-50%, -50%) scale(0.8); opacity: 0.1; }
  100% { transform: translate(-50%, -50%) scale(1.2); opacity: 0.2; }
}

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

.hero-badge {
  display: inline-block;
  padding: 0.5rem 1rem;
  border-radius: 9999px;
  background: rgba(59, 130, 246, 0.1);
  border: 1px solid rgba(59, 130, 246, 0.2);
  color: var(--accent-blue);
  font-size: 0.875rem;
  font-weight: 600;
  margin-bottom: 2rem;
  letter-spacing: 0.5px;
}

.hero-title {
  font-size: clamp(3rem, 6vw, 5.5rem);
  letter-spacing: -0.03em;
  margin-bottom: 1.5rem;
}

.hero-subtitle {
  font-size: clamp(1.125rem, 2vw, 1.375rem);
  color: var(--text-secondary);
  margin-bottom: 3rem;
  max-width: 600px;
  margin-inline: auto;
}

/* Section Common */
section {
  padding: 8rem 0;
  position: relative;
}

.section-header {
  text-align: center;
  margin-bottom: 5rem;
}

.section-label {
  color: var(--text-tertiary);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 2px;
  font-size: 0.875rem;
  margin-bottom: 1rem;
  display: block;
}

.section-title {
  font-size: clamp(2rem, 4vw, 3.5rem);
  letter-spacing: -0.02em;
}

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

/* Innovation Cards */
.innovation-card {
  display: flex;
  flex-direction: column;
}

.card-icon {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.5rem;
  font-size: 1.5rem;
  color: white;
}

.icon-blue { background: linear-gradient(135deg, #3b82f6, #2563eb); }
.icon-purple { background: linear-gradient(135deg, #8b5cf6, #6d28d9); }
.icon-emerald { background: linear-gradient(135deg, #10b981, #059669); }

.card-title {
  font-size: 1.5rem;
  margin-bottom: 1rem;
}

.card-desc {
  color: var(--text-secondary);
  flex-grow: 1;
  margin-bottom: 2rem;
}

.card-link {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-weight: 600;
  color: var(--text-primary);
  font-size: 0.875rem;
  transition: var(--transition-fast);
}

.card-link svg {
  width: 16px;
  height: 16px;
  transition: var(--transition-fast);
}

.glass-card:hover .card-link {
  color: var(--accent-blue);
}

.glass-card:hover .card-link svg {
  transform: translateX(4px);
}

/* Dual Grid for Other Portfolios */
.dual-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  margin-top: 8rem;
}

@media (max-width: 900px) {
  .dual-grid {
    grid-template-columns: 1fr;
    gap: 4rem;
  }
}

.list-card {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.5rem;
  border-radius: 1rem;
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid var(--border-color);
  margin-bottom: 1rem;
  transition: var(--transition-smooth);
}

.list-card:hover {
  background: rgba(255, 255, 255, 0.05);
  border-color: var(--border-hover);
  transform: translateX(8px);
}

.list-info h4 {
  font-size: 1.25rem;
  margin-bottom: 0.25rem;
}

.list-info p {
  color: var(--text-tertiary);
  font-size: 0.875rem;
}

/* Hover colors for specific lists */
.hover-emerald:hover { border-color: rgba(16, 185, 129, 0.5); }
.hover-purple:hover { border-color: rgba(139, 92, 246, 0.5); }
.hover-cyan:hover { border-color: rgba(6, 182, 212, 0.5); }
.hover-orange:hover { border-color: rgba(249, 115, 22, 0.5); }

/* Footer */
footer {
  padding: 4rem 0 2rem;
  border-top: 1px solid var(--border-color);
  text-align: center;
  color: var(--text-tertiary);
}

.footer-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2rem;
}

.footer-logo {
  font-family: var(--font-heading);
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-secondary);
}

.footer-bottom {
  margin-top: 4rem;
  font-size: 0.875rem;
}

/* Animations */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: all 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}

.reveal.active {
  opacity: 1;
  transform: translateY(0);
}