/* ===== CSS CUSTOM PROPERTIES ===== */
:root {
  /* Colors */
  --primary-color: #6366f1;
  --primary-dark: #4f46e5;
  --primary-light: #818cf8;
  --secondary-color: #8b5cf6;
  --accent-color: #06b6d4;
  --success-color: #10b981;
  --warning-color: #f59e0b;
  --error-color: #ef4444;
  
  /* Text Colors */
  --text-primary: #1f2937;
  --text-secondary: #6b7280;
  --text-muted: #9ca3af;
  --text-white: #ffffff;
  
  /* Background Colors */
  --bg-primary: #ffffff;
  --bg-secondary: #f9fafb;
  --bg-tertiary: #f3f4f6;
  --bg-dark: #111827;
  --bg-card: #ffffff;
  
  /* Gradients */
  --gradient-primary: linear-gradient(135deg, #6366f1 0%, #8b5cf6 100%);
  --gradient-secondary: linear-gradient(135deg, #06b6d4 0%, #3b82f6 100%);
  --gradient-accent: linear-gradient(135deg, #f59e0b 0%, #ef4444 100%);
  --gradient-dark: linear-gradient(135deg, #1f2937 0%, #111827 100%);
  
  /* Shadows */
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
  --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
  
  /* Spacing */
  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-2xl: 3rem;
  --space-3xl: 4rem;
  --space-4xl: 6rem;
  
  /* Typography */
  --font-family-primary: 'Inter', 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  --font-family-heading: 'Poppins', 'Inter', sans-serif;
  --font-family-mono: 'Fira Code', 'Monaco', 'Cascadia Code', monospace;
  
  --font-size-xs: 0.75rem;
  --font-size-sm: 0.875rem;
  --font-size-base: 1rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.25rem;
  --font-size-2xl: 1.5rem;
  --font-size-3xl: 1.875rem;
  --font-size-4xl: 2.25rem;
  --font-size-5xl: 3rem;
  --font-size-6xl: 3.75rem;
  
  --font-weight-light: 300;
  --font-weight-normal: 400;
  --font-weight-medium: 500;
  --font-weight-semibold: 600;
  --font-weight-bold: 700;
  --font-weight-extrabold: 800;
  
  --line-height-tight: 1.25;
  --line-height-normal: 1.5;
  --line-height-relaxed: 1.75;
  
  /* Border Radius */
  --radius-sm: 0.25rem;
  --radius-md: 0.375rem;
  --radius-lg: 0.5rem;
  --radius-xl: 0.75rem;
  --radius-2xl: 1rem;
  --radius-3xl: 1.5rem;
  --radius-full: 9999px;
  
  /* Transitions */
  --transition-fast: 150ms ease-in-out;
  --transition-normal: 250ms ease-in-out;
  --transition-slow: 350ms ease-in-out;
  
  /* Z-index */
  --z-dropdown: 1000;
  --z-sticky: 1020;
  --z-fixed: 1030;
  --z-modal-backdrop: 1040;
  --z-modal: 1050;
  --z-popover: 1060;
  --z-tooltip: 1070;
}

/* Dark Theme Variables */
[data-theme="dark"] {
  --text-primary: #f9fafb;
  --text-secondary: #d1d5db;
  --text-muted: #9ca3af;
  
  --bg-primary: #111827;
  --bg-secondary: #1f2937;
  --bg-tertiary: #374151;
  --bg-card: #1f2937;
  
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.3), 0 2px 4px -1px rgba(0, 0, 0, 0.2);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.3), 0 4px 6px -2px rgba(0, 0, 0, 0.2);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.3), 0 10px 10px -5px rgba(0, 0, 0, 0.2);
  --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
}

/* ===== RESET & BASE STYLES ===== */
*,
*::before,
*::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

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

body {
  font-family: var(--font-family-primary);
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-normal);
  line-height: var(--line-height-normal);
  color: var(--text-primary);
  background-color: var(--bg-primary);
  transition: background-color var(--transition-normal), color var(--transition-normal);
  overflow-x: hidden;
}

/* ===== ACCESSIBILITY ===== */
.skip-link {
  position: absolute;
  top: -40px;
  left: 6px;
  background: var(--primary-color);
  color: var(--text-white);
  padding: 8px;
  text-decoration: none;
  border-radius: var(--radius-md);
  z-index: var(--z-tooltip);
  transition: top var(--transition-fast);
}

.skip-link:focus {
  top: 6px;
}

/* ===== UTILITY CLASSES ===== */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-md);
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* ===== THEME TOGGLE ===== */
.theme-toggle {
  position: fixed;
  top: 50%;
  right: var(--space-md);
  transform: translateY(-50%);
  width: 50px;
  height: 50px;
  border: none;
  border-radius: var(--radius-full);
  background: var(--gradient-primary);
  color: var(--text-white);
  cursor: pointer;
  z-index: var(--z-fixed);
  box-shadow: var(--shadow-lg);
  transition: all var(--transition-normal);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--font-size-lg);
}

.theme-toggle:hover {
  transform: translateY(-50%) scale(1.1);
  box-shadow: var(--shadow-xl);
}

.theme-toggle .fa-sun {
  display: none;
}

[data-theme="dark"] .theme-toggle .fa-moon {
  display: none;
}

[data-theme="dark"] .theme-toggle .fa-sun {
  display: block;
}

/* ===== NAVIGATION ===== */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: var(--z-fixed);
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  transition: all var(--transition-normal);
}

[data-theme="dark"] .navbar {
  background: rgba(17, 24, 39, 0.95);
  border-bottom: 1px solid rgba(55, 65, 81, 0.3);
}

.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-md) 0;
  max-width: 1200px;
  margin: 0 auto;
  padding-left: var(--space-md);
  padding-right: var(--space-md);
}

.logo a {
  font-family: var(--font-family-heading);
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-bold);
  color: var(--primary-color);
  text-decoration: none;
  transition: color var(--transition-fast);
}

.logo a:hover {
  color: var(--primary-dark);
}

.nav-links {
  display: flex;
  list-style: none;
  gap: var(--space-lg);
}

.nav-links a {
  color: var(--text-primary);
  text-decoration: none;
  font-weight: var(--font-weight-medium);
  padding: var(--space-sm) var(--space-md);
  border-radius: var(--radius-lg);
  transition: all var(--transition-fast);
  position: relative;
}

.nav-links a::before {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  width: 0;
  height: 2px;
  background: var(--primary-color);
  transition: all var(--transition-fast);
  transform: translateX(-50%);
}

.nav-links a:hover::before,
.nav-links a:focus::before {
  width: 80%;
}

.nav-links a:hover,
.nav-links a:focus {
  color: var(--primary-color);
  background: rgba(99, 102, 241, 0.1);
}

/* Mobile Navigation */
.burger {
  display: none;
  flex-direction: column;
  cursor: pointer;
  padding: var(--space-sm);
  border: none;
  background: transparent;
  gap: 4px;
}

.burger span {
  width: 25px;
  height: 3px;
  background: var(--text-primary);
  border-radius: var(--radius-sm);
  transition: all var(--transition-normal);
}

.burger.active span:nth-child(1) {
  transform: rotate(45deg) translate(6px, 6px);
}

.burger.active span:nth-child(2) {
  opacity: 0;
}

.burger.active span:nth-child(3) {
  transform: rotate(-45deg) translate(6px, -6px);
}

/* ===== HERO SECTION ===== */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  background: var(--gradient-primary);
  overflow: hidden;
}

.hero-background {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 1;
}

.floating-shapes {
  position: absolute;
  width: 100%;
  height: 100%;
}

.shape {
  position: absolute;
  border-radius: var(--radius-full);
  background: rgba(255, 255, 255, 0.1);
  animation: float 6s ease-in-out infinite;
}

.shape-1 {
  width: 80px;
  height: 80px;
  top: 20%;
  left: 10%;
  animation-delay: 0s;
}

.shape-2 {
  width: 120px;
  height: 120px;
  top: 60%;
  right: 10%;
  animation-delay: 2s;
}

.shape-3 {
  width: 60px;
  height: 60px;
  bottom: 20%;
  left: 20%;
  animation-delay: 4s;
}

.shape-4 {
  width: 100px;
  height: 100px;
  top: 10%;
  right: 30%;
  animation-delay: 1s;
}

.hero-content {
  text-align: center;
  z-index: 2;
  position: relative;
  max-width: 800px;
  padding: var(--space-2xl);
  background: rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-3xl);
  backdrop-filter: blur(20px);
  border: 1px solid rgba(255, 255, 255, 0.2);
  box-shadow: var(--shadow-2xl);
}

.profile-img {
  width: 200px;
  height: 200px;
  margin: 0 auto var(--space-xl);
  border-radius: var(--radius-full);
  overflow: hidden;
  border: 4px solid rgba(255, 255, 255, 0.3);
  position: relative;
  animation: profilePulse 2s ease-in-out infinite;
}

.profile-img::before {
  content: '';
  position: absolute;
  top: -4px;
  left: -4px;
  right: -4px;
  bottom: -4px;
  border-radius: var(--radius-full);
  background: conic-gradient(from 0deg, var(--primary-color), var(--secondary-color), var(--accent-color), var(--primary-color));
  z-index: -1;
  animation: rotate 3s linear infinite;
}

.profile-photo {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-slow);
}

.profile-img:hover .profile-photo {
  transform: scale(1.1);
}

.typing-text {
  font-family: var(--font-family-heading);
  font-size: clamp(var(--font-size-3xl), 5vw, var(--font-size-5xl));
  font-weight: var(--font-weight-bold);
  color: var(--text-white);
  margin-bottom: var(--space-md);
  text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
  overflow: hidden;
  white-space: nowrap;
  border-right: 3px solid var(--text-white);
  animation: typing 3.5s steps(40, end), blink-caret 0.75s step-end infinite;
}

.subtitle {
  font-size: var(--font-size-xl);
  color: rgba(255, 255, 255, 0.9);
  margin-bottom: var(--space-2xl);
  opacity: 0;
  animation: fadeInUp 1s ease forwards;
  animation-delay: 1s;
}

.hero-stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
  gap: var(--space-lg);
  margin-bottom: var(--space-2xl);
  opacity: 0;
  animation: fadeInUp 1s ease forwards;
  animation-delay: 1.5s;
}

.stat {
  text-align: center;
}

.stat-number {
  display: block;
  font-size: var(--font-size-3xl);
  font-weight: var(--font-weight-bold);
  color: var(--text-white);
  text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
}

.stat-label {
  font-size: var(--font-size-sm);
  color: rgba(255, 255, 255, 0.8);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.cta-buttons {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-md);
  justify-content: center;
  opacity: 0;
  animation: fadeInUp 1s ease forwards;
  animation-delay: 2s;
}

.cta-primary,
.cta-secondary,
.cta-tertiary {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-md) var(--space-xl);
  border-radius: var(--radius-full);
  text-decoration: none;
  font-weight: var(--font-weight-semibold);
  transition: all var(--transition-normal);
  position: relative;
  overflow: hidden;
}

.cta-primary {
  background: var(--text-white);
  color: var(--primary-color);
  box-shadow: var(--shadow-lg);
}

.cta-primary:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-xl);
}

.cta-secondary {
  background: rgba(255, 255, 255, 0.2);
  color: var(--text-white);
  border: 2px solid rgba(255, 255, 255, 0.3);
}

.cta-secondary:hover {
  background: rgba(255, 255, 255, 0.3);
  border-color: rgba(255, 255, 255, 0.5);
}

.cta-tertiary {
  background: transparent;
  color: var(--text-white);
  border: 2px solid var(--text-white);
}

.cta-tertiary:hover {
  background: var(--text-white);
  color: var(--primary-color);
}

.scroll-indicator {
  position: absolute;
  bottom: var(--space-xl);
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-sm);
  color: var(--text-white);
  font-size: var(--font-size-sm);
  animation: bounce 2s infinite;
}

.scroll-arrow {
  width: 20px;
  height: 20px;
  border-right: 2px solid var(--text-white);
  border-bottom: 2px solid var(--text-white);
  transform: rotate(45deg);
}

/* ===== SECTION STYLES ===== */
section {
  padding: var(--space-4xl) 0;
  position: relative;
}

.section-header {
  text-align: center;
  margin-bottom: var(--space-3xl);
}

.section-header h2 {
  font-family: var(--font-family-heading);
  font-size: clamp(var(--font-size-3xl), 4vw, var(--font-size-4xl));
  font-weight: var(--font-weight-bold);
  color: var(--text-primary);
  margin-bottom: var(--space-md);
  position: relative;
}

.section-header h2::after {
  content: '';
  position: absolute;
  bottom: -10px;
  left: 50%;
  transform: translateX(-50%);
  width: 60px;
  height: 4px;
  background: var(--gradient-primary);
  border-radius: var(--radius-full);
}

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

/* ===== ABOUT SECTION ===== */
.about {
  background: var(--bg-secondary);
}

.about-content {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: var(--space-3xl);
  align-items: start;
}

.about-text {
  font-size: var(--font-size-lg);
  line-height: var(--line-height-relaxed);
  color: var(--text-secondary);
}

.about-text p {
  margin-bottom: var(--space-lg);
}

.about-highlights {
  display: flex;
  flex-direction: column;
  gap: var(--space-lg);
}

.highlight-item {
  background: var(--bg-card);
  padding: var(--space-lg);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-md);
  text-align: center;
  transition: all var(--transition-normal);
  border: 1px solid rgba(99, 102, 241, 0.1);
}

.highlight-item:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
  border-color: var(--primary-color);
}

.highlight-item i {
  font-size: var(--font-size-3xl);
  color: var(--primary-color);
  margin-bottom: var(--space-md);
}

.highlight-item h3 {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-semibold);
  color: var(--text-primary);
  margin-bottom: var(--space-sm);
}

.highlight-item p {
  color: var(--text-secondary);
  font-size: var(--font-size-sm);
}

/* ===== EXPERIENCE SECTION ===== */
.experience {
  background: var(--bg-primary);
}

.timeline {
  position: relative;
  max-width: 800px;
  margin: 0 auto;
}

.timeline::before {
  content: '';
  position: absolute;
  left: 50%;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--gradient-primary);
  transform: translateX(-50%);
}

.timeline-item {
  position: relative;
  margin-bottom: var(--space-3xl);
  width: 50%;
}

.timeline-item:nth-child(odd) {
  left: 0;
  padding-right: var(--space-xl);
}

.timeline-item:nth-child(even) {
  left: 50%;
  padding-left: var(--space-xl);
}

.timeline-marker {
  position: absolute;
  width: 20px;
  height: 20px;
  background: var(--primary-color);
  border: 4px solid var(--bg-primary);
  border-radius: var(--radius-full);
  top: 0;
  z-index: 2;
}

.timeline-item:nth-child(odd) .timeline-marker {
  right: -10px;
}

.timeline-item:nth-child(even) .timeline-marker {
  left: -10px;
}

.timeline-content {
  background: var(--bg-card);
  padding: var(--space-xl);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-md);
  border: 1px solid rgba(99, 102, 241, 0.1);
  transition: all var(--transition-normal);
}

.timeline-content:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
  border-color: var(--primary-color);
}

.timeline-date {
  display: inline-block;
  background: var(--gradient-primary);
  color: var(--text-white);
  padding: var(--space-xs) var(--space-md);
  border-radius: var(--radius-full);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  margin-bottom: var(--space-md);
}

.timeline-content h3 {
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-semibold);
  color: var(--text-primary);
  margin-bottom: var(--space-xs);
}

.timeline-content h4 {
  font-size: var(--font-size-md);
  color: var(--primary-color);
  margin-bottom: var(--space-md);
}

.timeline-content p {
  color: var(--text-secondary);
  line-height: var(--line-height-relaxed);
}

/* ===== SKILLS SECTION ===== */
.skills {
  background: var(--bg-secondary);
}

.skills-filter {
  display: flex;
  justify-content: center;
  gap: var(--space-md);
  margin-bottom: var(--space-3xl);
  flex-wrap: wrap;
}

.filter-btn {
  padding: var(--space-sm) var(--space-lg);
  border: 2px solid var(--primary-color);
  background: transparent;
  color: var(--primary-color);
  border-radius: var(--radius-full);
  font-weight: var(--font-weight-medium);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.filter-btn:hover,
.filter-btn.active {
  background: var(--primary-color);
  color: var(--text-white);
}

.skills-container {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--space-xl);
}

.skill-card {
  background: var(--bg-card);
  padding: var(--space-xl);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-md);
  border: 1px solid rgba(99, 102, 241, 0.1);
  transition: all var(--transition-normal);
  position: relative;
  overflow: hidden;
}

.skill-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: var(--gradient-primary);
  transform: scaleX(0);
  transition: transform var(--transition-normal);
}

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

.skill-card:hover {
  transform: translateY(-10px);
  box-shadow: var(--shadow-xl);
  border-color: var(--primary-color);
}

.skill-icon {
  font-size: var(--font-size-4xl);
  color: var(--primary-color);
  margin-bottom: var(--space-lg);
  text-align: center;
}

.skill-card h3 {
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-semibold);
  color: var(--text-primary);
  margin-bottom: var(--space-md);
  text-align: center;
}

.skill-level {
  margin-bottom: var(--space-md);
}

.progress-bar {
  width: 100%;
  height: 8px;
  background: var(--bg-tertiary);
  border-radius: var(--radius-full);
  overflow: hidden;
  margin-bottom: var(--space-sm);
}

.progress {
  height: 100%;
  background: var(--gradient-primary);
  border-radius: var(--radius-full);
  transition: width 1.5s ease-out;
  position: relative;
}

.progress::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
  animation: shimmer 2s infinite;
}

.percentage {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  color: var(--primary-color);
  float: right;
}

.skill-description {
  color: var(--text-secondary);
  font-size: var(--font-size-sm);
  line-height: var(--line-height-relaxed);
  text-align: center;
}

/* ===== PROJECTS SECTION ===== */
.projects {
  background: var(--bg-primary);
}

.projects-filter {
  display: flex;
  justify-content: center;
  gap: var(--space-md);
  margin-bottom: var(--space-3xl);
  flex-wrap: wrap;
}

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

.project-card {
  background: var(--bg-card);
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  border: 1px solid rgba(99, 102, 241, 0.1);
  transition: all var(--transition-normal);
  position: relative;
}

.project-card:hover {
  transform: translateY(-10px);
  box-shadow: var(--shadow-xl);
  border-color: var(--primary-color);
}

.project-image {
  position: relative;
  height: 200px;
  overflow: hidden;
}

.project-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-slow);
}

.project-card:hover .project-image img {
  transform: scale(1.1);
}

.project-overlay {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.7);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-md);
  opacity: 0;
  transition: opacity var(--transition-normal);
}

.project-card:hover .project-overlay {
  opacity: 1;
}

.project-preview,
.project-github {
  width: 50px;
  height: 50px;
  border-radius: var(--radius-full);
  background: var(--text-white);
  color: var(--primary-color);
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--font-size-lg);
  text-decoration: none;
  transition: all var(--transition-fast);
}

.project-preview:hover,
.project-github:hover {
  transform: scale(1.1);
  background: var(--primary-color);
  color: var(--text-white);
}

.project-content {
  padding: var(--space-xl);
}

.project-content h3 {
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-semibold);
  color: var(--text-primary);
  margin-bottom: var(--space-md);
}

.project-content p {
  color: var(--text-secondary);
  line-height: var(--line-height-relaxed);
  margin-bottom: var(--space-lg);
}

.tech-stack {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
  margin-bottom: var(--space-lg);
}

.tech-tag {
  padding: var(--space-xs) var(--space-md);
  background: rgba(99, 102, 241, 0.1);
  color: var(--primary-color);
  border-radius: var(--radius-full);
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-medium);
  border: 1px solid rgba(99, 102, 241, 0.2);
}

.project-stats {
  display: flex;
  gap: var(--space-lg);
}

.project-stats .stat {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  color: var(--text-secondary);
  font-size: var(--font-size-sm);
}

.project-stats .stat i {
  color: var(--primary-color);
}

/* ===== TESTIMONIALS SECTION ===== */
.testimonials {
  background: var(--bg-secondary);
}

.testimonials-container {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--space-xl);
}

.testimonial-card {
  background: var(--bg-card);
  padding: var(--space-xl);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-md);
  border: 1px solid rgba(99, 102, 241, 0.1);
  transition: all var(--transition-normal);
  position: relative;
}

.testimonial-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: var(--gradient-primary);
  border-radius: var(--radius-xl) var(--radius-xl) 0 0;
}

.testimonial-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
  border-color: var(--primary-color);
}

.testimonial-content {
  margin-bottom: var(--space-lg);
}

.quote-icon {
  font-size: var(--font-size-2xl);
  color: var(--primary-color);
  margin-bottom: var(--space-md);
}

.testimonial-content blockquote p {
  font-size: var(--font-size-lg);
  line-height: var(--line-height-relaxed);
  color: var(--text-secondary);
  font-style: italic;
}

.testimonial-author {
  display: flex;
  align-items: center;
  gap: var(--space-md);
}

.author-avatar {
  width: 60px;
  height: 60px;
  border-radius: var(--radius-full);
  overflow: hidden;
  border: 3px solid var(--primary-color);
}

.author-avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.author-name {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-semibold);
  color: var(--text-primary);
  display: block;
  margin-bottom: var(--space-xs);
}

.author-title {
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
}

/* ===== CONTACT SECTION ===== */
.contact {
  background: var(--bg-primary);
}

.contact-container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-4xl);
  align-items: start;
}

.contact-info {
  display: flex;
  flex-direction: column;
  gap: var(--space-xl);
}

.contact-item {
  display: flex;
  align-items: center;
  gap: var(--space-lg);
  padding: var(--space-lg);
  background: var(--bg-card);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-md);
  border: 1px solid rgba(99, 102, 241, 0.1);
  transition: all var(--transition-normal);
}

.contact-item:hover {
  transform: translateX(10px);
  box-shadow: var(--shadow-lg);
  border-color: var(--primary-color);
}

.contact-icon {
  width: 60px;
  height: 60px;
  background: var(--gradient-primary);
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-white);
  font-size: var(--font-size-xl);
  flex-shrink: 0;
}

.contact-details h3 {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-semibold);
  color: var(--text-primary);
  margin-bottom: var(--space-xs);
}

.contact-details a,
.contact-details span {
  color: var(--text-secondary);
  text-decoration: none;
  transition: color var(--transition-fast);
}

.contact-details a:hover {
  color: var(--primary-color);
}

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

.social-link {
  width: 60px;
  height: 60px;
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-white);
  font-size: var(--font-size-xl);
  text-decoration: none;
  transition: all var(--transition-normal);
  position: relative;
  overflow: hidden;
}

.social-link::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--gradient-primary);
  z-index: -1;
  transition: transform var(--transition-normal);
}

.social-link:hover::before {
  transform: scale(1.1);
}

.social-link:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
}

.social-link.linkedin::before {
  background: linear-gradient(135deg, #0077B5, #00A0DC);
}

.social-link.github::before {
  background: linear-gradient(135deg, #24292E, #404448);
}

.social-link.instagram::before {
  background: linear-gradient(45deg, #f09433 0%, #e6683c 25%, #dc2743 50%, #cc2366 75%, #bc1888 100%);
}

.social-link.twitter::before {
  background: linear-gradient(135deg, #1DA1F2, #14171A);
}

/* ===== CONTACT FORM ===== */
.contact-form {
  background: var(--bg-card);
  padding: var(--space-2xl);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-lg);
  border: 1px solid rgba(99, 102, 241, 0.1);
}

.form-group {
  margin-bottom: var(--space-lg);
}

.form-label {
  display: block;
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  color: var(--text-primary);
  margin-bottom: var(--space-sm);
}

.form-input,
.form-textarea {
  width: 100%;
  padding: var(--space-md);
  border: 2px solid var(--bg-tertiary);
  border-radius: var(--radius-lg);
  font-size: var(--font-size-base);
  color: var(--text-primary);
  background: var(--bg-primary);
  transition: all var(--transition-fast);
  resize: vertical;
}

.form-input:focus,
.form-textarea:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

.form-input.error,
.form-textarea.error {
  border-color: var(--error-color);
}

.form-error {
  display: block;
  color: var(--error-color);
  font-size: var(--font-size-sm);
  margin-top: var(--space-xs);
  min-height: 20px;
}

.form-submit {
  width: 100%;
  padding: var(--space-md) var(--space-xl);
  background: var(--gradient-primary);
  color: var(--text-white);
  border: none;
  border-radius: var(--radius-lg);
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-semibold);
  cursor: pointer;
  transition: all var(--transition-normal);
  position: relative;
  overflow: hidden;
}

.form-submit:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.form-submit:disabled {
  opacity: 0.7;
  cursor: not-allowed;
  transform: none;
}

.submit-loading,
.submit-success {
  display: none;
}

.form-submit.loading .submit-text {
  display: none;
}

.form-submit.loading .submit-loading {
  display: block;
}

.form-submit.success .submit-text {
  display: none;
}

.form-submit.success .submit-success {
  display: block;
}

/* ===== FOOTER ===== */
.footer {
  background: var(--bg-dark);
  color: var(--text-white);
  padding: var(--space-3xl) 0 var(--space-xl);
}

.footer-content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--space-2xl);
  margin-bottom: var(--space-2xl);
}

.footer-section h3,
.footer-section h4 {
  margin-bottom: var(--space-lg);
  color: var(--text-white);
}

.footer-section p {
  color: rgba(255, 255, 255, 0.8);
  line-height: var(--line-height-relaxed);
}

.footer-nav {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.footer-nav a {
  color: rgba(255, 255, 255, 0.8);
  text-decoration: none;
  transition: color var(--transition-fast);
}

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

.footer-social {
  display: flex;
  gap: var(--space-md);
}

.footer-social a {
  width: 40px;
  height: 40px;
  background: rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-white);
  text-decoration: none;
  transition: all var(--transition-fast);
}

.footer-social a:hover {
  background: var(--primary-color);
  transform: translateY(-2px);
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: var(--space-xl);
  border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.back-to-top {
  width: 50px;
  height: 50px;
  background: var(--gradient-primary);
  border: none;
  border-radius: var(--radius-full);
  color: var(--text-white);
  cursor: pointer;
  transition: all var(--transition-normal);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--font-size-lg);
}

.back-to-top:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
}

/* ===== MODAL ===== */
.modal {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: var(--z-modal);
  display: none;
  align-items: center;
  justify-content: center;
  padding: var(--space-md);
}

.modal.active {
  display: flex;
}

.modal-overlay {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.8);
  backdrop-filter: blur(5px);
}

.modal-content {
  background: var(--bg-card);
  border-radius: var(--radius-xl);
  max-width: 800px;
  width: 100%;
  max-height: 90vh;
  overflow-y: auto;
  position: relative;
  z-index: 1;
  box-shadow: var(--shadow-2xl);
}

.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--space-xl);
  border-bottom: 1px solid var(--bg-tertiary);
}

.modal-header h2 {
  font-size: var(--font-size-2xl);
  font-weight: var(--font-weight-semibold);
  color: var(--text-primary);
}

.modal-close {
  width: 40px;
  height: 40px;
  border: none;
  background: var(--bg-tertiary);
  border-radius: var(--radius-full);
  color: var(--text-secondary);
  cursor: pointer;
  transition: all var(--transition-fast);
  display: flex;
  align-items: center;
  justify-content: center;
}

.modal-close:hover {
  background: var(--error-color);
  color: var(--text-white);
}

.modal-body {
  padding: var(--space-xl);
}

.modal-image {
  margin-bottom: var(--space-lg);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.modal-image img {
  width: 100%;
  height: 300px;
  object-fit: cover;
}

.modal-details h3 {
  font-size: var(--font-size-2xl);
  font-weight: var(--font-weight-semibold);
  color: var(--text-primary);
  margin-bottom: var(--space-md);
}

.modal-details p {
  color: var(--text-secondary);
  line-height: var(--line-height-relaxed);
  margin-bottom: var(--space-lg);
}

.modal-tech-stack {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
  margin-bottom: var(--space-xl);
}

.modal-links {
  display: flex;
  gap: var(--space-md);
}

.modal-link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-md) var(--space-lg);
  background: var(--gradient-primary);
  color: var(--text-white);
  text-decoration: none;
  border-radius: var(--radius-lg);
  font-weight: var(--font-weight-semibold);
  transition: all var(--transition-normal);
}

.modal-link:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

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

@keyframes profilePulse {
  0%, 100% {
    box-shadow: 0 0 0 0 rgba(255, 255, 255, 0.7);
  }
  50% {
    box-shadow: 0 0 0 20px rgba(255, 255, 255, 0);
  }
}

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

@keyframes typing {
  from {
    width: 0;
  }
  to {
    width: 100%;
  }
}

@keyframes blink-caret {
  from, to {
    border-color: transparent;
  }
  50% {
    border-color: var(--text-white);
  }
}

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

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

@keyframes shimmer {
  0% {
    transform: translateX(-100%);
  }
  100% {
    transform: translateX(100%);
  }
}

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

/* ===== RESPONSIVE DESIGN ===== */
@media (max-width: 1024px) {
  .container {
    padding: 0 var(--space-lg);
  }
  
  .about-content {
    grid-template-columns: 1fr;
    gap: var(--space-2xl);
  }
  
  .contact-container {
    grid-template-columns: 1fr;
    gap: var(--space-2xl);
  }
  
  .timeline::before {
    left: 30px;
  }
  
  .timeline-item {
    width: 100%;
    left: 0;
    padding-left: 60px;
    padding-right: 0;
  }
  
  .timeline-item .timeline-marker {
    left: 20px;
  }
}

@media (max-width: 768px) {
  :root {
    --space-4xl: 3rem;
    --space-3xl: 2rem;
    --space-2xl: 1.5rem;
  }
  
  .nav-links {
    position: fixed;
    top: 80px;
    right: -100%;
    width: 100%;
    height: calc(100vh - 80px);
    background: var(--bg-card);
    flex-direction: column;
    justify-content: start;
    align-items: center;
    padding-top: var(--space-2xl);
    transition: right var(--transition-normal);
    box-shadow: var(--shadow-lg);
  }
  
  .nav-links.nav-active {
    right: 0;
  }
  
  .nav-links li {
    opacity: 0;
    animation: navLinkFade 0.5s ease forwards;
  }
  
  .burger {
    display: flex;
  }
  
  .hero-content {
    padding: var(--space-xl);
  }
  
  .hero-stats {
    grid-template-columns: repeat(auto-fit, minmax(100px, 1fr));
    gap: var(--space-md);
  }
  
  .cta-buttons {
    flex-direction: column;
    align-items: center;
  }
  
  .cta-primary,
  .cta-secondary,
  .cta-tertiary {
    width: 100%;
    max-width: 300px;
    justify-content: center;
  }
  
  .skills-container {
    grid-template-columns: 1fr;
  }
  
  .projects-container {
    grid-template-columns: 1fr;
  }
  
  .testimonials-container {
    grid-template-columns: 1fr;
  }
  
  .footer-content {
    grid-template-columns: 1fr;
    text-align: center;
  }
  
  .footer-bottom {
    flex-direction: column;
    gap: var(--space-md);
    text-align: center;
  }
  
  .social-links {
    justify-content: center;
  }
  
  .theme-toggle {
    top: auto;
    bottom: var(--space-md);
    right: var(--space-md);
    transform: none;
  }
  
  .theme-toggle:hover {
    transform: scale(1.1);
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 var(--space-md);
  }
  
  .hero-content {
    padding: var(--space-lg);
  }
  
  .profile-img {
    width: 150px;
    height: 150px;
  }
  
  .typing-text {
    font-size: var(--font-size-2xl);
  }
  
  .subtitle {
    font-size: var(--font-size-lg);
  }
  
  .section-header h2 {
    font-size: var(--font-size-3xl);
  }
  
  .skills-filter,
  .projects-filter {
    flex-direction: column;
    align-items: center;
  }
  
  .filter-btn {
    width: 200px;
    text-align: center;
  }
  
  .modal-content {
    margin: var(--space-md);
    max-height: calc(100vh - 2rem);
  }
  
  .modal-header,
  .modal-body {
    padding: var(--space-lg);
  }
  
  .modal-links {
    flex-direction: column;
  }
}

/* ===== PRINT STYLES ===== */
@media print {
  .navbar,
  .theme-toggle,
  .scroll-indicator,
  .back-to-top,
  .burger {
    display: none !important;
  }
  
  .hero {
    min-height: auto;
    padding: var(--space-2xl) 0;
  }
  
  section {
    padding: var(--space-xl) 0;
    break-inside: avoid;
  }
  
  .project-card,
  .skill-card,
  .testimonial-card {
    break-inside: avoid;
  }
}

/* ===== REDUCED MOTION ===== */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  
  .scroll-indicator {
    animation: none;
  }
  
  .typing-text {
    animation: none;
    border-right: none;
    white-space: normal;
  }
}

/* ===== HIGH CONTRAST MODE ===== */
@media (prefers-contrast: high) {
  :root {
    --primary-color: #0000ff;
    --text-primary: #000000;
    --text-secondary: #000000;
    --bg-primary: #ffffff;
    --bg-secondary: #ffffff;
    --bg-card: #ffffff;
  }
  
  [data-theme="dark"] {
    --primary-color: #00ffff;
    --text-primary: #ffffff;
    --text-secondary: #ffffff;
    --bg-primary: #000000;
    --bg-secondary: #000000;
    --bg-card: #000000;
  }
  
  .skill-card,
  .project-card,
  .testimonial-card,
  .contact-item {
    border: 2px solid var(--text-primary);
  }
}