/* ============================================
   FUTURISTIC AI-LED PORTFOLIO - DESIGN SYSTEM
   ============================================ */

/* Import Modern Fonts */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=Space+Grotesk:wght@400;500;600;700&display=swap');

/* ============================================
   CSS CUSTOM PROPERTIES - DESIGN TOKENS
   ============================================ */

:root {
  /* Vibrant Soft Color Palette */
  --color-primary: hsl(270, 70%, 65%);
  --color-primary-light: hsl(270, 70%, 75%);
  --color-primary-dark: hsl(270, 70%, 55%);
  
  --color-secondary: hsl(180, 65%, 60%);
  --color-secondary-light: hsl(180, 65%, 70%);
  --color-secondary-dark: hsl(180, 65%, 50%);
  
  --color-accent: hsl(340, 75%, 70%);
  --color-accent-light: hsl(340, 75%, 80%);
  
  /* Gradient Combinations */
  --gradient-primary: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 100%);
  --gradient-secondary: linear-gradient(135deg, var(--color-secondary) 0%, var(--color-accent) 100%);
  --gradient-accent: linear-gradient(135deg, var(--color-primary) 0%, var(--color-accent) 100%);
  --gradient-radial: radial-gradient(circle at top right, var(--color-primary) 0%, transparent 70%);
  
  /* Dark Background Palette */
  --color-bg-dark: hsl(240, 20%, 8%);
  --color-bg-darker: hsl(240, 25%, 5%);
  --color-bg-light: hsl(240, 15%, 12%);
  
  /* Text Colors */
  --color-text-primary: hsl(0, 0%, 95%);
  --color-text-secondary: hsl(0, 0%, 75%);
  --color-text-muted: hsl(0, 0%, 60%);
  
  /* Glassmorphism */
  --glass-bg: rgba(255, 255, 255, 0.05);
  --glass-border: rgba(255, 255, 255, 0.1);
  --glass-shadow: 0 8px 32px 0 rgba(31, 38, 135, 0.15);
  
  /* Spacing System */
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 2rem;
  --spacing-lg: 4rem;
  --spacing-xl: 6rem;
  
  /* Typography */
  --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-heading: 'Space Grotesk', sans-serif;
  
  /* Animation Timings */
  --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-base: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 0.6s cubic-bezier(0.4, 0, 0.2, 1);
  
  /* Z-index Layers */
  --z-background: -1;
  --z-base: 1;
  --z-elevated: 10;
  --z-modal: 100;
  --z-particle: 0;
}

/* ============================================
   RESET & BASE STYLES
   ============================================ */

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

html {
  scroll-behavior: smooth;
  overflow-x: hidden;
}

body {
  font-family: var(--font-primary);
  background: var(--color-bg-dark);
  color: var(--color-text-primary);
  line-height: 1.7;
  overflow-x: hidden;
  position: relative;
}

/* Add ambient gradient background */
body::before {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: 
    radial-gradient(ellipse at 20% 30%, rgba(147, 51, 234, 0.15) 0%, transparent 50%),
    radial-gradient(ellipse at 80% 70%, rgba(59, 130, 246, 0.15) 0%, transparent 50%),
    radial-gradient(ellipse at 50% 50%, rgba(236, 72, 153, 0.1) 0%, transparent 50%);
  z-index: var(--z-background);
  pointer-events: none;
}

/* ============================================
   TYPOGRAPHY
   ============================================ */

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.02em;
}

h1 {
  font-size: clamp(2.5rem, 8vw, 5rem);
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

h2 {
  font-size: clamp(2rem, 5vw, 3.5rem);
}

h3 {
  font-size: clamp(1.5rem, 3vw, 2rem);
}

p {
  font-size: clamp(1rem, 2vw, 1.125rem);
  color: var(--color-text-secondary);
}

a {
  color: var(--color-primary-light);
  text-decoration: none;
  transition: color var(--transition-fast);
}

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

/* ============================================
   LAYOUT UTILITIES
   ============================================ */

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

.section {
  padding: var(--spacing-xl) 0;
  position: relative;
}

.section-title {
  text-align: center;
  margin-bottom: var(--spacing-lg);
  position: relative;
}

.section-title h2 {
  display: inline-block;
  position: relative;
  padding-bottom: var(--spacing-sm);
}

.section-title h2::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 60%;
  height: 4px;
  background: var(--gradient-primary);
  border-radius: 2px;
}

/* ============================================
   GLASSMORPHIC CARDS
   ============================================ */

.glass-card {
  background: var(--glass-bg);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border: 1px solid var(--glass-border);
  border-radius: 20px;
  padding: var(--spacing-md);
  box-shadow: var(--glass-shadow);
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
}

.glass-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: var(--gradient-radial);
  opacity: 0;
  transition: opacity var(--transition-base);
  pointer-events: none;
}

.glass-card:hover {
  transform: translateY(-5px);
  border-color: var(--color-primary);
  box-shadow: 0 12px 40px 0 rgba(147, 51, 234, 0.3);
}

.glass-card:hover::before {
  opacity: 0.1;
}

/* ============================================
   NAVIGATION
   ============================================ */

.navbar {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  padding: var(--spacing-sm) 0;
  background: rgba(20, 20, 40, 0.8);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--glass-border);
  z-index: var(--z-modal);
  transition: all var(--transition-base);
}

.navbar.scrolled {
  padding: var(--spacing-xs) 0;
  background: rgba(20, 20, 40, 0.95);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
}

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

.logo {
  font-family: var(--font-heading);
  font-size: 1.5rem;
  font-weight: 700;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.nav-menu {
  display: flex;
  list-style: none;
  gap: var(--spacing-md);
}

.nav-link {
  color: var(--color-text-primary);
  font-weight: 500;
  padding: var(--spacing-xs) var(--spacing-sm);
  border-radius: 8px;
  transition: all var(--transition-fast);
  position: relative;
}

.nav-link::before {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%) scaleX(0);
  width: 80%;
  height: 2px;
  background: var(--gradient-primary);
  transition: transform var(--transition-base);
}

.nav-link:hover {
  color: var(--color-primary-light);
}

.nav-link:hover::before {
  transform: translateX(-50%) scaleX(1);
}

/* Mobile Menu Toggle */
.menu-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  z-index: var(--z-modal);
}

.menu-toggle span {
  width: 25px;
  height: 3px;
  background: var(--color-primary);
  border-radius: 2px;
  transition: all var(--transition-base);
}

/* ============================================
   HERO SECTION
   ============================================ */

.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
}

#particle-canvas {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: var(--z-particle);
}

.hero-content {
  text-align: center;
  z-index: var(--z-base);
  max-width: 900px;
  padding: var(--spacing-md);
}

.hero-subtitle {
  font-size: clamp(1rem, 2vw, 1.5rem);
  color: var(--color-secondary);
  margin-bottom: var(--spacing-sm);
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.hero-title {
  margin-bottom: var(--spacing-sm);
  animation: fadeInUp 1s var(--transition-slow) backwards;
}

.hero-description {
  font-size: clamp(1.1rem, 2.5vw, 1.4rem);
  margin-bottom: var(--spacing-lg);
  color: var(--color-text-secondary);
  animation: fadeInUp 1s 0.2s var(--transition-slow) backwards;
}

.hero-cta {
  display: flex;
  gap: var(--spacing-sm);
  justify-content: center;
  flex-wrap: wrap;
  animation: fadeInUp 1s 0.4s var(--transition-slow) backwards;
}

/* ============================================
   BUTTONS
   ============================================ */

.btn {
  padding: 1rem 2.5rem;
  border-radius: 50px;
  font-weight: 600;
  font-size: 1rem;
  cursor: pointer;
  transition: all var(--transition-base);
  border: none;
  position: relative;
  overflow: hidden;
  z-index: 1;
}

.btn::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 0;
  height: 0;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.2);
  transform: translate(-50%, -50%);
  transition: width 0.6s, height 0.6s;
  z-index: -1;
}

.btn:hover::before {
  width: 300px;
  height: 300px;
}

.btn-primary {
  background: var(--gradient-primary);
  color: white;
  box-shadow: 0 10px 30px rgba(147, 51, 234, 0.3);
}

.btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 15px 40px rgba(147, 51, 234, 0.5);
}

.btn-outline {
  background: transparent;
  color: var(--color-primary-light);
  border: 2px solid var(--color-primary);
}

.btn-outline:hover {
  background: var(--color-primary);
  color: white;
  transform: translateY(-3px);
  box-shadow: 0 10px 30px rgba(147, 51, 234, 0.3);
}

/* ============================================
   ABOUT SECTION
   ============================================ */

.about-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-lg);
  align-items: center;
}

.about-image {
  position: relative;
}

.avatar-container {
  width: 100%;
  max-width: 400px;
  aspect-ratio: 1;
  margin: 0 auto;
  position: relative;
}

.avatar-container::before {
  content: '';
  position: absolute;
  inset: -10px;
  background: var(--gradient-primary);
  border-radius: 50%;
  animation: rotate 8s linear infinite;
  z-index: -1;
}

.avatar-container img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 50%;
  border: 5px solid var(--color-bg-dark);
}

.about-text h2 {
  margin-bottom: var(--spacing-md);
  background: var(--gradient-accent);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.about-text p {
  margin-bottom: var(--spacing-sm);
  line-height: 1.8;
}

.about-stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: var(--spacing-md);
  margin-top: var(--spacing-md);
}

.stat-card {
  text-align: center;
  padding: var(--spacing-sm);
}

.stat-number {
  font-size: 2.5rem;
  font-weight: 700;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.stat-label {
  color: var(--color-text-secondary);
  font-size: 0.9rem;
}

/* ============================================
   SKILLS SECTION
   ============================================ */

.skills-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--spacing-md);
}

.skill-card {
  text-align: center;
  padding: var(--spacing-md);
}

.skill-icon {
  width: 80px;
  height: 80px;
  margin: 0 auto var(--spacing-sm);
  background: var(--gradient-primary);
  border-radius: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2.5rem;
  transition: all var(--transition-base);
  animation: float 3s ease-in-out infinite;
}

.skill-card:nth-child(2) .skill-icon {
  animation-delay: 0.5s;
  background: var(--gradient-secondary);
}

.skill-card:nth-child(3) .skill-icon {
  animation-delay: 1s;
  background: var(--gradient-accent);
}

.skill-card:hover .skill-icon {
  transform: scale(1.1) rotate(5deg);
}

.skill-card h3 {
  margin-bottom: var(--spacing-xs);
  color: var(--color-primary-light);
}

.skill-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  justify-content: center;
  margin-top: var(--spacing-sm);
}

.tag {
  padding: 0.4rem 1rem;
  background: rgba(147, 51, 234, 0.2);
  border: 1px solid var(--color-primary);
  border-radius: 20px;
  font-size: 0.85rem;
  color: var(--color-primary-light);
  transition: all var(--transition-fast);
}

.tag:hover {
  background: var(--color-primary);
  color: white;
  transform: translateY(-2px);
}

/* ============================================
   PROJECTS SECTION
   ============================================ */

.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: var(--spacing-md);
}

.project-card {
  position: relative;
  perspective: 1000px;
  height: 400px;
}

.project-card-inner {
  position: relative;
  width: 100%;
  height: 100%;
  transition: transform 0.8s;
  transform-style: preserve-3d;
}

.project-card:hover .project-card-inner {
  transform: rotateY(5deg) rotateX(5deg);
}

.project-image {
  width: 100%;
  height: 200px;
  object-fit: cover;
  border-radius: 20px 20px 0 0;
}

.project-content {
  padding: var(--spacing-md);
}

.project-content h3 {
  margin-bottom: var(--spacing-sm);
  color: var(--color-primary-light);
}

.project-tech {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin: var(--spacing-sm) 0;
}

.project-links {
  display: flex;
  gap: var(--spacing-sm);
  margin-top: var(--spacing-sm);
}

.project-links a {
  padding: 0.6rem 1.5rem;
  background: var(--gradient-primary);
  border-radius: 25px;
  color: white;
  font-size: 0.9rem;
  transition: all var(--transition-fast);
}

.project-links a:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(147, 51, 234, 0.4);
}

/* ============================================
   CONTACT SECTION
   ============================================ */

.contact-content {
  max-width: 700px;
  margin: 0 auto;
}

.contact-form {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.form-group label {
  color: var(--color-text-secondary);
  font-weight: 500;
}

.form-group input,
.form-group textarea {
  padding: 1rem;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: 12px;
  color: var(--color-text-primary);
  font-family: var(--font-primary);
  font-size: 1rem;
  transition: all var(--transition-base);
  backdrop-filter: blur(10px);
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(147, 51, 234, 0.2);
}

.form-group textarea {
  resize: vertical;
  min-height: 150px;
}

.submit-btn {
  margin-top: var(--spacing-sm);
}

.social-links {
  display: flex;
  justify-content: center;
  gap: var(--spacing-md);
  margin-top: var(--spacing-lg);
}

.social-link {
  width: 50px;
  height: 50px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: 50%;
  font-size: 1.5rem;
  transition: all var(--transition-base);
}

.social-link:hover {
  background: var(--gradient-primary);
  color: white;
  transform: translateY(-5px) scale(1.1);
  box-shadow: 0 10px 25px rgba(147, 51, 234, 0.4);
}

/* ============================================
   FOOTER
   ============================================ */

.footer {
  padding: var(--spacing-md) 0;
  text-align: center;
  border-top: 1px solid var(--glass-border);
  background: rgba(20, 20, 40, 0.5);
  backdrop-filter: blur(10px);
}

.footer p {
  color: var(--color-text-muted);
  font-size: 0.9rem;
}

/* ============================================
   ANIMATIONS & KEYFRAMES
   ============================================ */

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

@keyframes float {
  0%, 100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-10px);
  }
}

@keyframes rotate {
  from {
    transform: rotate(0deg);
  }
  to {
    transform: rotate(360deg);
  }
}

@keyframes glow {
  0%, 100% {
    box-shadow: 0 0 20px rgba(147, 51, 234, 0.5);
  }
  50% {
    box-shadow: 0 0 40px rgba(147, 51, 234, 0.8);
  }
}

/* Scroll-triggered animations */
.reveal {
  opacity: 0;
  transform: translateY(50px);
  transition: all var(--transition-slow);
}

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

/* ============================================
   RESPONSIVE DESIGN
   ============================================ */

@media (max-width: 768px) {
  .nav-menu {
    position: fixed;
    top: 0;
    right: -100%;
    width: 70%;
    height: 100vh;
    background: rgba(20, 20, 40, 0.98);
    backdrop-filter: blur(20px);
    flex-direction: column;
    padding: var(--spacing-xl) var(--spacing-md);
    transition: right var(--transition-base);
    box-shadow: -5px 0 20px rgba(0, 0, 0, 0.5);
  }
  
  .nav-menu.active {
    right: 0;
  }
  
  .menu-toggle {
    display: flex;
  }
  
  .menu-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translateY(8px);
  }
  
  .menu-toggle.active span:nth-child(2) {
    opacity: 0;
  }
  
  .menu-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translateY(-8px);
  }
  
  .about-content {
    grid-template-columns: 1fr;
  }
  
  .projects-grid {
    grid-template-columns: 1fr;
  }
  
  .skills-grid {
    grid-template-columns: 1fr;
  }
  
  .hero-cta {
    flex-direction: column;
  }
  
  .section {
    padding: var(--spacing-lg) 0;
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 var(--spacing-sm);
  }
  
  .about-stats {
    grid-template-columns: 1fr;
  }
}

/* ============================================
   UTILITY CLASSES
   ============================================ */

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

.glow {
  animation: glow 2s ease-in-out infinite;
}

.hidden {
  display: none;
}

.mt-1 { margin-top: var(--spacing-sm); }
.mt-2 { margin-top: var(--spacing-md); }
.mt-3 { margin-top: var(--spacing-lg); }

.mb-1 { margin-bottom: var(--spacing-sm); }
.mb-2 { margin-bottom: var(--spacing-md); }
.mb-3 { margin-bottom: var(--spacing-lg); }