/* Modern Portfolio 2025 - CSS */

/* CSS Custom Properties for Design System */
:root {
  /* Color Palette - Modern Dark Theme */
  --primary-gradient: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  --secondary-gradient: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
  --accent-gradient: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
  --dark-gradient: linear-gradient(135deg, #0c0c0c 0%, #1a1a2e 50%, #16213e 100%);
  --card-gradient: linear-gradient(145deg, rgba(255,255,255,0.1) 0%, rgba(255,255,255,0.05) 100%);
  
  --primary-color: #667eea;
  --secondary-color: #764ba2;
  --accent-color: #4facfe;
  --text-primary: #ffffff;
  --text-secondary: #b8bcc8;
  --text-muted: #6c7293;
  --background-dark: #0c0c0c;
  --background-card: rgba(255,255,255,0.05);
  --border-color: rgba(255,255,255,0.1);
  --shadow-light: rgba(0,0,0,0.1);
  --shadow-dark: rgba(0,0,0,0.3);
  
  /* Typography */
  --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', monospace;
  
  /* Spacing & Sizing */
  --container-max-width: 1200px;
  --border-radius: 16px;
  --border-radius-small: 8px;
  --border-radius-large: 24px;
  
  /* Animations */
  --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-smooth: 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  --transition-bounce: 0.4s cubic-bezier(0.68, -0.55, 0.265, 1.55);
}

/* Reset & Base Styles */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

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

body {
  font-family: var(--font-primary);
  background: var(--background-dark);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
  position: relative;
}

/* Global Background Pattern */
body::before {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: 
    radial-gradient(circle at 20% 80%, rgba(102, 126, 234, 0.1) 0%, transparent 50%),
    radial-gradient(circle at 80% 20%, rgba(79, 172, 254, 0.1) 0%, transparent 50%),
    radial-gradient(circle at 40% 40%, rgba(240, 147, 251, 0.05) 0%, transparent 50%);
  z-index: -2;
  pointer-events: none;
}

/* Container */
.container {
  max-width: var(--container-max-width);
  margin: 0 auto;
  padding: 0 2rem;
}

/* Navigation */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(12, 12, 12, 0.8);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border-color);
  transition: var(--transition-smooth);
}

.navbar.scrolled {
  background: rgba(12, 12, 12, 0.95);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
}

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

.nav-logo {
  position: relative;
  font-size: 1.5rem;
  font-weight: 800;
  background: var(--primary-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.logo-glow {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 100%;
  height: 100%;
  background: var(--primary-gradient);
  border-radius: 50%;
  opacity: 0;
  transform: translate(-50%, -50%) scale(1.2);
  filter: blur(20px);
  z-index: -1;
  animation: logoGlow 3s ease-in-out infinite;
}

@keyframes logoGlow {
  0%, 100% { opacity: 0; transform: translate(-50%, -50%) scale(1.2); }
  50% { opacity: 0.3; transform: translate(-50%, -50%) scale(1.5); }
}

.nav-menu {
  display: flex;
  gap: 2rem;
  align-items: center;
}

.nav-link {
  color: var(--text-secondary);
  text-decoration: none;
  font-weight: 500;
  position: relative;
  padding: 0.5rem 0;
  transition: var(--transition-fast);
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--accent-gradient);
  transition: var(--transition-smooth);
}

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

.nav-link:hover::after,
.nav-link.active::after {
  width: 100%;
}

.hamburger {
  display: none;
  flex-direction: column;
  cursor: pointer;
  gap: 4px;
}

.bar {
  width: 25px;
  height: 3px;
  background: var(--text-primary);
  transition: var(--transition-fast);
  border-radius: 2px;
}

/* Hero Section */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
  padding: 0 2rem;
}

.hero-background {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: -1;
}

.gradient-orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(60px);
  opacity: 0.6;
  animation: float 6s ease-in-out infinite;
}

.orb-1 {
  width: 300px;
  height: 300px;
  background: var(--primary-gradient);
  top: 20%;
  left: 10%;
  animation-delay: 0s;
}

.orb-2 {
  width: 200px;
  height: 200px;
  background: var(--secondary-gradient);
  top: 60%;
  right: 15%;
  animation-delay: 2s;
}

.orb-3 {
  width: 250px;
  height: 250px;
  background: var(--accent-gradient);
  bottom: 20%;
  left: 50%;
  animation-delay: 4s;
}

@keyframes float {
  0%, 100% { transform: translateY(0px) rotate(0deg); }
  50% { transform: translateY(-20px) rotate(180deg); }
}

.hero-content {
  max-width: var(--container-max-width);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
  width: 100%;
}

.hero-title {
  font-size: clamp(3rem, 8vw, 6rem);
  font-weight: 800;
  line-height: 1.1;
  margin-bottom: 1.5rem;
}

.title-line {
  display: block;
  opacity: 0;
  transform: translateY(50px);
  animation: slideInUp 0.8s ease-out forwards;
}

.title-line:nth-child(2) {
  animation-delay: 0.2s;
}

.title-line:nth-child(3) {
  animation-delay: 0.4s;
}

.highlight {
  background: var(--primary-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  position: relative;
}

@keyframes slideInUp {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.hero-subtitle {
  font-size: 1.25rem;
  color: var(--text-secondary);
  margin-bottom: 2.5rem;
  max-width: 500px;
  opacity: 0;
  animation: slideInUp 0.8s ease-out 0.6s forwards;
}

.hero-buttons {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
  opacity: 0;
  animation: slideInUp 0.8s ease-out 0.8s forwards;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 1rem 2rem;
  border: none;
  border-radius: var(--border-radius);
  font-size: 1rem;
  font-weight: 600;
  text-decoration: none;
  cursor: pointer;
  position: relative;
  overflow: hidden;
  transition: var(--transition-smooth);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.btn::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
  transition: var(--transition-smooth);
}

.btn:hover::before {
  left: 100%;
}

.btn-primary {
  background: var(--primary-gradient);
  color: white;
  box-shadow: 0 8px 32px rgba(102, 126, 234, 0.3);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 40px rgba(102, 126, 234, 0.4);
}

.btn-secondary {
  background: var(--background-card);
  color: var(--text-primary);
  border: 1px solid var(--border-color);
  backdrop-filter: blur(10px);
}

.btn-secondary:hover {
  background: rgba(255,255,255,0.1);
  transform: translateY(-2px);
}

/* Hero Visual */
.hero-visual {
  display: flex;
  justify-content: center;
  align-items: center;
  opacity: 0;
  animation: slideInRight 1s ease-out 1s forwards;
}

@keyframes slideInRight {
  from {
    opacity: 0;
    transform: translateX(50px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

.floating-card {
  background: var(--card-gradient);
  backdrop-filter: blur(20px);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-large);
  padding: 2rem;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
  animation: cardFloat 4s ease-in-out infinite;
}

@keyframes cardFloat {
  0%, 100% { transform: translateY(0px) rotate(0deg); }
  50% { transform: translateY(-10px) rotate(1deg); }
}

.code-snippet {
  font-family: var(--font-mono);
  background: rgba(0, 0, 0, 0.3);
  border-radius: var(--border-radius);
  padding: 1.5rem;
  min-width: 300px;
}

.snippet-header {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 1rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid rgba(255,255,255,0.1);
}

.snippet-dots {
  display: flex;
  gap: 0.3rem;
}

.snippet-dots span {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #ff5f56;
}

.snippet-dots span:nth-child(2) {
  background: #ffbd2e;
}

.snippet-dots span:nth-child(3) {
  background: #27ca3f;
}

.snippet-title {
  color: var(--text-secondary);
  font-size: 0.875rem;
}

.snippet-body {
  font-size: 0.875rem;
  line-height: 1.6;
}

.keyword {
  color: #c678dd;
}

.function {
  color: #61afef;
}

.comment {
  color: #5c6370;
  font-style: italic;
}

.string {
  color: #98c379;
}

/* Scroll Indicator */
.scroll-indicator {
  position: absolute;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%);
  opacity: 0;
  animation: slideInUp 1s ease-out 1.5s forwards;
}

.scroll-arrow {
  width: 30px;
  height: 30px;
  border: 2px solid var(--accent-color);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  animation: bounce 2s infinite;
  color: var(--accent-color);
}

@keyframes bounce {
  0%, 20%, 50%, 80%, 100% { transform: translateY(0); }
  40% { transform: translateY(-10px); }
  60% { transform: translateY(-5px); }
}

/* Section Styles */
section {
  padding: 6rem 0;
  position: relative;
}

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

.section-title {
  font-size: clamp(2.5rem, 5vw, 3.5rem);
  font-weight: 800;
  margin-bottom: 1rem;
  background: var(--primary-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

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

/* About Section */
.about {
  background: linear-gradient(135deg, rgba(255,255,255,0.02) 0%, rgba(255,255,255,0.01) 100%);
}

.about-content {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 4rem;
  align-items: center;
}

.about-text {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
}

.about-card {
  background: var(--background-card);
  backdrop-filter: blur(10px);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius);
  padding: 2rem;
  text-align: center;
  transition: var(--transition-smooth);
  position: relative;
  overflow: hidden;
}

.about-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 2px;
  background: var(--accent-gradient);
  transform: scaleX(0);
  transition: var(--transition-smooth);
}

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

.about-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.2);
}

.card-icon {
  width: 60px;
  height: 60px;
  background: var(--accent-gradient);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 1.5rem;
  font-size: 1.5rem;
  color: white;
}

.about-card h3 {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 1rem;
  color: var(--text-primary);
}

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

.about-stats {
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

.stat-item {
  text-align: center;
  padding: 2rem;
  background: var(--background-card);
  backdrop-filter: blur(10px);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius);
  transition: var(--transition-smooth);
}

.stat-item:hover {
  transform: translateY(-5px);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.2);
}

.stat-number {
  font-size: 3rem;
  font-weight: 800;
  background: var(--accent