/* Optimized Professional Portfolio CSS */
/* Dark Mode with Glow Effects & Light Mode with Orange Accents */

:root {
  /* Dark Mode Colors */
  --bg-primary: #0a0e13;
  --bg-secondary: #131922;
  --bg-tertiary: #1e2532;
  --text-primary: #f8fafc;
  --text-secondary: #e2e8f0;
  --text-muted: #94a3b8;
  
  /* Electric Blue Palette for Dark Mode */
  --electric-blue: #00d4ff;
  --electric-blue-light: #33ddff;
  --electric-blue-glow: rgba(0, 212, 255, 0.4);
  
  /* Gradients for Dark Mode */
  --gradient-primary: linear-gradient(135deg, #00d4ff 0%, #0099cc 100%);
  
  /* Dark Mode Effects with Glow */
  --border-color: #334155;
  --card-shadow: 0 10px 40px rgba(0, 0, 0, 0.3);
  --card-hover-shadow: 0 20px 60px rgba(0, 0, 0, 0.4), 0 0 40px rgba(0, 212, 255, 0.3);
  --glow-effect: 0 0 20px var(--electric-blue-glow);
  --intense-glow: 0 0 30px rgba(0, 212, 255, 0.6), 0 0 60px rgba(0, 212, 255, 0.3);
}

[data-theme="light"] {
  /* Light Mode Colors */
  --bg-primary: #ffffff;
  --bg-secondary: #f8fafc;
  --bg-tertiary: #f1f5f9;
  --text-primary: #1e293b;
  --text-secondary: #475569;
  --text-muted: #64748b;
  
  /* Orange & Blue Palette for Light Mode */
  --electric-blue: #ff6b35;
  --electric-blue-light: #ff8c42;
  --electric-blue-glow: rgba(255, 107, 53, 0.0);
  
  /* Light Mode Gradients with Orange */
  --gradient-primary: linear-gradient(135deg, #ff6b35 0%, #f7931e 100%);
  
  /* Clean Effects - No Glow in Light Mode */
  --border-color: #e2e8f0;
  --card-shadow: 0 4px 25px rgba(0, 0, 0, 0.08);
  --card-hover-shadow: 0 10px 40px rgba(0, 0, 0, 0.12);
  --glow-effect: none;
  --intense-glow: none;
}

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

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

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
  transition: background-color 0.3s ease, color 0.3s ease;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 2rem;
}

/* Theme Toggle with Enhanced Glow in Dark Mode */
.theme-toggle {
  position: fixed;
  top: 2rem;
  right: 2rem;
  width: 55px;
  height: 55px;
  border-radius: 50%;
  border: 2px solid var(--electric-blue);
  background: var(--gradient-primary);
  color: white;
  font-size: 1.3rem;
  cursor: pointer;
  z-index: 1000;
  transition: all 0.3s ease;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--card-shadow);
}

/* Dark Mode Only - Enhanced Glow Effect */
:not([data-theme="light"]) .theme-toggle:hover {
  transform: translateY(-3px);
  box-shadow: var(--intense-glow), var(--card-hover-shadow);
  border-color: #33ddff;
}

[data-theme="light"] .theme-toggle:hover {
  transform: translateY(-3px);
  box-shadow: var(--card-hover-shadow);
}

/* Background Particles */
.particles {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  overflow: hidden;
  z-index: -1;
  pointer-events: none;
}

.particle {
  position: absolute;
  background: var(--electric-blue);
  border-radius: 50%;
  opacity: 0.1;
  animation: float 20s infinite linear;
}

/* Enhanced Glow for Particles in Dark Mode */
:not([data-theme="light"]) .particle {
  box-shadow: 0 0 10px var(--electric-blue-glow);
}

[data-theme="light"] .particle {
  opacity: 0.05;
}

@keyframes float {
  0% {
    transform: translateY(100vh) rotate(0deg);
    opacity: 0;
  }
  10% {
    opacity: 0.6;
  }
  90% {
    opacity: 0.2;
  }
  100% {
    transform: translateY(-100vh) rotate(360deg);
    opacity: 0;
  }
}

/* Navigation */
nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.5rem 0;
  position: relative;
  z-index: 100;
}

/* Logo with Enhanced Glow in Dark Mode */
.logo {
  font-size: 2rem;
  font-weight: 800;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

/* Dark Mode Only - Logo Glow */
:not([data-theme="light"]) .logo:hover {
  filter: drop-shadow(0 0 10px var(--electric-blue-glow));
}

.logo-text {
  display: inline-block;
  transition: transform 0.3s ease;
  font-weight: 800;
  letter-spacing: -0.02em;
}

.logo:hover .logo-text {
  transform: scale(1.1) rotate(5deg);
}

.nav-menu {
  display: flex;
  list-style: none;
  gap: 2.5rem;
}

.nav-menu li a {
  color: var(--text-secondary);
  text-decoration: none;
  font-weight: 500;
  position: relative;
  transition: all 0.3s ease;
  padding: 0.5rem 0;
}

.nav-menu li a:hover,
.nav-menu li a.active {
  color: var(--electric-blue);
}

/* Dark Mode Only - Navigation Glow */
:not([data-theme="light"]) .nav-menu li a:hover {
  text-shadow: 0 0 10px var(--electric-blue-glow);
}

.nav-menu li a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 3px;
  background: var(--gradient-primary);
  transition: width 0.3s ease;
  border-radius: 2px;
}

/* Dark Mode Only - Navigation Underline Glow */
:not([data-theme="light"]) .nav-menu li a::after {
  box-shadow: 0 0 8px var(--electric-blue-glow);
}

.nav-menu li a:hover::after,
.nav-menu li a.active::after {
  width: 100%;
}

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

.hamburger span {
  width: 25px;
  height: 3px;
  background: var(--text-primary);
  transition: all 0.3s ease;
  border-radius: 2px;
}

/* Header Section */
#header {
  min-height: 100vh;
  display: flex;
  align-items: center;
  position: relative;
}

.hero-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 5rem;
  align-items: center;
  width: 100%;
}

.hero-text .greeting {
  color: var(--electric-blue);
  font-size: 1.3rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
}

/* Dark Mode Only - Greeting Glow */
:not([data-theme="light"]) .hero-text .greeting {
  text-shadow: 0 0 10px var(--electric-blue-glow);
}

.hero-text h1 {
  font-size: 3.8rem;
  font-weight: 700;
  margin-bottom: 1rem;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* Dark Mode Only - Main Title Glow */
:not([data-theme="light"]) .hero-text h1 {
  filter: drop-shadow(0 0 15px var(--electric-blue-glow));
}

.typing-container {
  display: flex;
  align-items: center;
  margin-bottom: 1.5rem;
  min-height: 2.5rem;
}

.typing-text {
  font-size: 1.6rem;
  font-weight: 600;
  color: var(--electric-blue-light);
}

/* Dark Mode Only - Typing Text Glow */
:not([data-theme="light"]) .typing-text {
  text-shadow: 0 0 8px var(--electric-blue-glow);
}

.cursor {
  font-size: 1.6rem;
  color: var(--electric-blue);
  animation: blink 1s infinite;
  margin-left: 2px;
}

@keyframes blink {
  0%, 50% { opacity: 1; }
  51%, 100% { opacity: 0; }
}

.description {
  font-size: 1.2rem;
  color: var(--text-secondary);
  margin-bottom: 2.5rem;
  line-height: 1.8;
}

.cta-buttons {
  display: flex;
  gap: 1.5rem;
}

/* Buttons with Enhanced Glow in Dark Mode */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 1rem 2.5rem;
  border-radius: 50px;
  text-decoration: none;
  font-weight: 600;
  font-size: 1rem;
  transition: all 0.3s ease;
  border: none;
  cursor: pointer;
}

.btn.primary {
  background: var(--gradient-primary);
  color: white;
  box-shadow: var(--card-shadow);
  border: 2px solid var(--electric-blue);
}

.btn.secondary {
  background: transparent;
  color: var(--electric-blue);
  border: 2px solid var(--electric-blue);
}

/* Dark Mode Only - Button Hover Glow */
:not([data-theme="light"]) .btn:hover {
  transform: translateY(-3px);
  box-shadow: var(--intense-glow), var(--card-hover-shadow);
}

[data-theme="light"] .btn:hover {
  transform: translateY(-3px);
  box-shadow: var(--card-hover-shadow);
}

.btn.secondary:hover {
  background: var(--electric-blue);
  color: white;
}

/* Hero Image with Enhanced Glow in Dark Mode */
.hero-image {
  display: flex;
  justify-content: center;
  align-items: center;
}

.image-container {
  position: relative;
  width: 380px;
  height: 480px;
  border-radius: 25px;
  overflow: hidden;
  box-shadow: var(--card-shadow);
  border: 3px solid var(--electric-blue);
  background: var(--gradient-primary);
  padding: 3px;
}

/* Dark Mode Only - Image Container Glow */
:not([data-theme="light"]) .image-container:hover {
  transform: translateY(-5px);
  box-shadow: var(--intense-glow), var(--card-hover-shadow);
  border-color: #33ddff;
}

[data-theme="light"] .image-container:hover {
  transform: translateY(-5px);
  box-shadow: var(--card-hover-shadow);
}

.image-container img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.3s ease;
  border-radius: 22px;
}

.image-container:hover img {
  transform: scale(1.02);
}

.image-overlay {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(45deg, rgba(0, 212, 255, 0.1), rgba(100, 244, 255, 0.1));
  opacity: 0;
  transition: opacity 0.3s ease;
  border-radius: 22px;
  z-index: 2;
}

[data-theme="light"] .image-overlay {
  background: linear-gradient(45deg, rgba(255, 107, 53, 0.1), rgba(247, 147, 30, 0.1));
}

.image-container:hover .image-overlay {
  opacity: 1;
}

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

section:nth-child(even) {
  background: var(--bg-secondary);
}

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

.section-title {
  font-size: 2.8rem;
  font-weight: 700;
  margin-bottom: 1rem;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* Dark Mode Only - Section Title Glow */
:not([data-theme="light"]) .section-title {
  filter: drop-shadow(0 0 10px var(--electric-blue-glow));
}

.section-subtitle {
  font-size: 1.2rem;
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto;
}

/* About Section */
.about-content {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 5rem;
  align-items: start;
}

.about-text p {
  font-size: 1.1rem;
  color: var(--text-secondary);
  margin-bottom: 1.5rem;
  line-height: 1.8;
}

.skills-overview {
  margin-top: 2.5rem;
}

.skill-category {
  margin-bottom: 2rem;
}

.skill-category h4 {
  font-size: 1.2rem;
  color: var(--electric-blue);
  margin-bottom: 1rem;
  font-weight: 600;
}

/* Dark Mode Only - Skill Category Glow */
:not([data-theme="light"]) .skill-category h4 {
  text-shadow: 0 0 8px var(--electric-blue-glow);
}

.skill-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.skill-tags span {
  background: var(--bg-tertiary);
  color: var(--text-primary);
  padding: 0.5rem 1rem;
  border-radius: 25px;
  font-size: 0.9rem;
  font-weight: 500;
  border: 2px solid var(--border-color);
  transition: all 0.3s ease;
}

.skill-tags span:hover {
  border-color: var(--electric-blue);
  transform: translateY(-2px);
  color: var(--electric-blue);
}

/* Dark Mode Only - Skill Tags Glow */
:not([data-theme="light"]) .skill-tags span:hover {
  box-shadow: 0 0 15px var(--electric-blue-glow);
}

.stats-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
}

.stat-item {
  text-align: center;
  padding: 2.5rem;
  background: var(--bg-tertiary);
  border-radius: 20px;
  border: 2px solid var(--border-color);
  transition: all 0.3s ease;
  box-shadow: var(--card-shadow);
}

/* Dark Mode Only - Stat Item Glow */
:not([data-theme="light"]) .stat-item:hover {
  transform: translateY(-8px);
  box-shadow: var(--intense-glow), var(--card-hover-shadow);
  border-color: var(--electric-blue);
}

[data-theme="light"] .stat-item:hover {
  transform: translateY(-8px);
  box-shadow: var(--card-hover-shadow);
  border-color: var(--electric-blue);
}

.stat-item h3 {
  font-size: 3rem;
  font-weight: 700;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 0.5rem;
}

.stat-item p {
  color: var(--text-secondary);
  font-weight: 500;
}

/* Education Timeline - Simplified */
.education-timeline {
  position: relative;
  max-width: 900px;
  margin: 0 auto 4rem;
}

.education-timeline::before {
  content: '';
  position: absolute;
  left: 30px;
  top: 0;
  bottom: 0;
  width: 3px;
  background: var(--gradient-primary);
  border-radius: 2px;
}

/* Dark Mode Only - Timeline Glow */
:not([data-theme="light"]) .education-timeline::before {
  box-shadow: 0 0 10px var(--electric-blue-glow);
}

.education-item {
  position: relative;
  margin-bottom: 3rem;
  padding-left: 80px;
}

.education-dot {
  position: absolute;
  left: 18px;
  top: 20px;
  width: 24px;
  height: 24px;
  background: var(--gradient-primary);
  border-radius: 50%;
  border: 4px solid var(--bg-secondary);
  z-index: 1;
}

/* Dark Mode Only - Education Dot Glow */
:not([data-theme="light"]) .education-dot {
  box-shadow: 0 0 15px var(--electric-blue-glow);
}

.education-content {
  background: var(--bg-tertiary);
  padding: 2.5rem;
  border-radius: 20px;
  border: 2px solid var(--border-color);
  transition: all 0.3s ease;
  box-shadow: var(--card-shadow);
}

/* Dark Mode Only - Education Content Glow */
:not([data-theme="light"]) .education-content:hover {
  transform: translateY(-5px);
  box-shadow: var(--glow-effect), var(--card-hover-shadow);
  border-color: var(--electric-blue);
}

[data-theme="light"] .education-content:hover {
  transform: translateY(-5px);
  box-shadow: var(--card-hover-shadow);
  border-color: var(--electric-blue);
}

.education-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 0.5rem;
  flex-wrap: wrap;
  gap: 1rem;
}

.education-content h3 {
  font-size: 1.4rem;
  font-weight: 600;
  color: var(--electric-blue);
  margin-bottom: 0.25rem;
}

.education-year {
  background: var(--gradient-primary);
  color: white;
  padding: 0.5rem 1rem;
  border-radius: 20px;
  font-size: 0.9rem;
  font-weight: 600;
}

.education-content h4 {
  font-size: 1.2rem;
  font-weight: 500;
  color: var(--text-primary);
  margin-bottom: 0.5rem;
}

.institution {
  color: var(--electric-blue-light);
  font-weight: 500;
  font-size: 1rem;
  margin-bottom: 1.5rem;
}

.education-details {
  display: flex;
  gap: 2rem;
  margin-bottom: 1.5rem;
  flex-wrap: wrap;
}

.detail-item {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--text-secondary);
  font-size: 0.95rem;
}

.detail-item i {
  color: var(--electric-blue);
}

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

.timeline::before {
  content: '';
  position: absolute;
  left: 50%;
  top: 0;
  bottom: 0;
  width: 3px;
  background: var(--gradient-primary);
  transform: translateX(-50%);
  border-radius: 2px;
}

/* Dark Mode Only - Experience Timeline Glow */
:not([data-theme="light"]) .timeline::before {
  box-shadow: 0 0 10px var(--electric-blue-glow);
}

.timeline-item {
  position: relative;
  margin-bottom: 3rem;
  display: flex;
  align-items: center;
}

.timeline-item:nth-child(odd) {
  flex-direction: row;
}

.timeline-item:nth-child(even) {
  flex-direction: row-reverse;
}

.timeline-dot {
  position: absolute;
  left: 50%;
  width: 24px;
  height: 24px;
  background: var(--gradient-primary);
  border-radius: 50%;
  transform: translateX(-50%);
  z-index: 1;
  border: 4px solid var(--bg-primary);
}

/* Dark Mode Only - Timeline Dot Glow */
:not([data-theme="light"]) .timeline-dot {
  box-shadow: 0 0 15px var(--electric-blue-glow);
}

.timeline-content {
  flex: 1;
  max-width: 45%;
  background: var(--bg-tertiary);
  padding: 2.5rem;
  border-radius: 20px;
  border: 2px solid var(--border-color);
  position: relative;
  transition: all 0.3s ease;
  box-shadow: var(--card-shadow);
}

/* Dark Mode Only - Timeline Content Glow */
:not([data-theme="light"]) .timeline-content:hover {
  transform: translateY(-5px);
  box-shadow: var(--glow-effect), var(--card-hover-shadow);
  border-color: var(--electric-blue);
}

[data-theme="light"] .timeline-content:hover {
  transform: translateY(-5px);
  box-shadow: var(--card-hover-shadow);
  border-color: var(--electric-blue);
}

.timeline-item:nth-child(odd) .timeline-content {
  margin-right: auto;
  margin-left: 0;
}

.timeline-item:nth-child(even) .timeline-content {
  margin-left: auto;
  margin-right: 0;
}

.timeline-content h3 {
  font-size: 1.4rem;
  font-weight: 600;
  color: var(--electric-blue);
  margin-bottom: 0.5rem;
}

.timeline-content h4 {
  font-size: 1.1rem;
  font-weight: 500;
  color: var(--text-primary);
  margin-bottom: 0.5rem;
}

.timeline-content .date {
  color: var(--electric-blue-light);
  font-weight: 500;
  font-size: 0.9rem;
  margin-bottom: 1rem;
  display: block;
}

.timeline-content p {
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 1rem;
}

.technologies {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.technologies span {
  background: var(--bg-secondary);
  color: var(--electric-blue);
  padding: 0.3rem 0.7rem;
  border-radius: 15px;
  font-size: 0.8rem;
  font-weight: 500;
  border: 1px solid var(--electric-blue);
  transition: all 0.3s ease;
}

.technologies span:hover {
  transform: translateY(-2px);
}

/* Dark Mode Only - Technologies Glow */
:not([data-theme="light"]) .technologies span:hover {
  box-shadow: 0 0 10px var(--electric-blue-glow);
}

/* Projects Section */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(380px, 1fr));
  gap: 2.5rem;
}

.project-card {
  background: var(--bg-tertiary);
  border-radius: 25px;
  overflow: hidden;
  border: 2px solid var(--border-color);
  transition: all 0.3s ease;
  position: relative;
  box-shadow: var(--card-shadow);
}

/* Dark Mode Only - Project Card Glow */
:not([data-theme="light"]) .project-card:hover {
  transform: translateY(-10px);
  box-shadow: var(--glow-effect), var(--card-hover-shadow);
  border-color: var(--electric-blue);
}

[data-theme="light"] .project-card:hover {
  transform: translateY(-10px);
  box-shadow: var(--card-hover-shadow);
  border-color: var(--electric-blue);
}

.project-image {
  position: relative;
  height: 280px;
  overflow: hidden;
}

.project-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.3s ease;
}

.project-overlay {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(45deg, rgba(0, 212, 255, 0.9), rgba(100, 244, 255, 0.9));
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: opacity 0.3s ease;
}

[data-theme="light"] .project-overlay {
  background: linear-gradient(45deg, rgba(255, 107, 53, 0.9), rgba(247, 147, 30, 0.9));
}

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

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

.project-links {
  display: flex;
  gap: 1rem;
}

.project-link {
  width: 55px;
  height: 55px;
  background: white;
  color: var(--electric-blue);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  text-decoration: none;
  font-size: 1.3rem;
  transition: all 0.3s ease;
  border: 2px solid var(--electric-blue);
}

.project-link:hover {
  transform: scale(1.1) rotate(5deg);
  background: var(--electric-blue);
  color: white;
}

.project-content {
  padding: 2.5rem;
}

.project-content h3 {
  font-size: 1.4rem;
  font-weight: 600;
  margin-bottom: 1rem;
  color: var(--text-primary);
}

.project-content p {
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 1.5rem;
}

.project-tech {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.project-tech span {
  background: var(--bg-secondary);
  color: var(--electric-blue);
  padding: 0.4rem 0.9rem;
  border-radius: 15px;
  font-size: 0.85rem;
  font-weight: 500;
  border: 1px solid var(--electric-blue);
  transition: all 0.3s ease;
}

.project-tech span:hover {
  transform: translateY(-2px);
}

/* Dark Mode Only - Project Tech Glow */
:not([data-theme="light"]) .project-tech span:hover {
  box-shadow: 0 0 10px var(--electric-blue-glow);
}

/* Certificates Section */
.certificates-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 2.5rem;
}

.certificate-card {
  background: var(--bg-tertiary);
  border-radius: 25px;
  overflow: hidden;
  border: 2px solid var(--border-color);
  transition: all 0.3s ease;
  box-shadow: var(--card-shadow);
  cursor: pointer;
}

/* Dark Mode Only - Certificate Card Glow */
:not([data-theme="light"]) .certificate-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--glow-effect), var(--card-hover-shadow);
  border-color: var(--electric-blue);
}

[data-theme="light"] .certificate-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--card-hover-shadow);
  border-color: var(--electric-blue);
}

.certificate-image {
  position: relative;
  height: 220px;
  overflow: hidden;
  background: var(--bg-secondary);
  display: flex;
  align-items: center;
  justify-content: center;
  border-bottom: 2px solid var(--border-color);
}

.certificate-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.3s ease;
}

.certificate-overlay {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 212, 255, 0.85);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: opacity 0.3s ease;
}

[data-theme="light"] .certificate-overlay {
  background: rgba(255, 107, 53, 0.85);
}

.certificate-overlay i {
  font-size: 2.5rem;
  color: white;
}

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

.certificate-card:hover .certificate-image img {
  transform: scale(1.05);
}

.certificate-content {
  padding: 2rem;
}

.certificate-content h3 {
  font-size: 1.3rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
  color: var(--electric-blue);
}

.certificate-content p {
  color: var(--text-secondary);
  font-size: 0.95rem;
  line-height: 1.6;
  margin-bottom: 1rem;
}

.certificate-date {
  color: var(--electric-blue-light);
  font-weight: 600;
  font-size: 0.9rem;
}

/* Contact Section */
.contact-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 5rem;
  align-items: start;
}

.contact-info {
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

.contact-item {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  padding: 2rem;
  background: var(--bg-tertiary);
  border-radius: 20px;
  border: 2px solid var(--border-color);
  transition: all 0.3s ease;
  box-shadow: var(--card-shadow);
}

/* Dark Mode Only - Contact Item Glow */
:not([data-theme="light"]) .contact-item:hover {
  transform: translateX(10px);
  border-color: var(--electric-blue);
  box-shadow: var(--glow-effect), var(--card-hover-shadow);
}

[data-theme="light"] .contact-item:hover {
  transform: translateX(10px);
  border-color: var(--electric-blue);
  box-shadow: var(--card-hover-shadow);
}

.contact-icon {
  width: 55px;
  height: 55px;
  background: var(--gradient-primary);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 1.3rem;
  flex-shrink: 0;
}

.contact-details h4 {
  font-weight: 600;
  margin-bottom: 0.25rem;
  color: var(--text-primary);
  font-size: 1.1rem;
}

.contact-details p {
  color: var(--text-secondary);
}

.social-links {
  display: flex;
  gap: 1rem;
  margin: 2rem 0;
}

.social-link {
  width: 55px;
  height: 55px;
  background: var(--bg-secondary);
  border: 2px solid var(--electric-blue);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--electric-blue);
  text-decoration: none;
  font-size: 1.3rem;
  transition: all 0.3s ease;
}

.social-link:hover {
  background: var(--gradient-primary);
  border-color: var(--electric-blue-light);
  color: white;
  transform: translateY(-3px) rotate(5deg);
}

/* Dark Mode Only - Social Link Glow */
:not([data-theme="light"]) .social-link:hover {
  box-shadow: 0 0 20px var(--electric-blue-glow);
}

.download-cv {
  margin-top: 1.5rem;
  align-self: flex-start;
}

/* Contact Form */
.contact-form {
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

.form-group {
  position: relative;
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 1.25rem 1.5rem;
  background: var(--bg-tertiary);
  border: 2px solid var(--border-color);
  border-radius: 15px;
  color: var(--text-primary);
  font-size: 1rem;
  font-family: inherit;
  transition: all 0.3s ease;
  resize: vertical;
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--electric-blue);
  background: var(--bg-secondary);
}

/* Dark Mode Only - Form Focus Glow */
:not([data-theme="light"]) .form-group input:focus,
:not([data-theme="light"]) .form-group textarea:focus {
  box-shadow: 0 0 15px var(--electric-blue-glow);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
  color: var(--text-muted);
}

.submit-btn {
  align-self: flex-start;
  position: relative;
  overflow: hidden;
}

.submit-btn:hover {
  transform: translateY(-2px);
}

.form-message {
  margin-top: 1rem;
  padding: 1rem;
  border-radius: 10px;
  text-align: center;
  font-weight: 500;
  display: none;
}

.form-message.success {
  background: rgba(46, 213, 115, 0.1);
  color: #2ed573;
  border: 2px solid rgba(46, 213, 115, 0.3);
  display: block;
}

.form-message.error {
  background: rgba(255, 71, 87, 0.1);
  color: #ff4757;
  border: 2px solid rgba(255, 71, 87, 0.3);
  display: block;
}

/* Footer */
.footer {
  background: var(--bg-secondary);
  padding: 3rem 0;
  border-top: 2px solid var(--border-color);
}

.footer-content {
  text-align: center;
  color: var(--text-secondary);
}

.footer-content p {
  margin-bottom: 0.5rem;
  font-size: 1rem;
}

.footer-content i {
  color: #ff4757;
  margin: 0 0.25rem;
}

/* Back to Top Button */
.back-to-top {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  width: 55px;
  height: 55px;
  background: var(--gradient-primary);
  border: 2px solid var(--electric-blue);
  border-radius: 50%;
  color: white;
  font-size: 1.3rem;
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transition: all 0.3s ease;
  z-index: 1000;
  box-shadow: var(--card-shadow);
}

.back-to-top.visible {
  opacity: 1;
  visibility: visible;
}

/* Dark Mode Only - Back to Top Glow */
:not([data-theme="light"]) .back-to-top:hover {
  transform: translateY(-3px) scale(1.05);
  box-shadow: var(--intense-glow), var(--card-hover-shadow);
}

[data-theme="light"] .back-to-top:hover {
  transform: translateY(-3px) scale(1.05);
  box-shadow: var(--card-hover-shadow);
}

/* Responsive Design */
@media (max-width: 1024px) {
  .container {
    padding: 0 1.5rem;
  }
  
  .hero-content {
    grid-template-columns: 1fr;
    gap: 3rem;
    text-align: center;
  }
  
  .about-content {
    grid-template-columns: 1fr;
    gap: 3rem;
  }
  
  .contact-content {
    grid-template-columns: 1fr;
    gap: 3rem;
  }
  
  .timeline::before {
    left: 20px;
  }
  
  .timeline-dot {
    left: 20px;
  }
  
  .timeline-item {
    flex-direction: row !important;
    padding-left: 60px;
  }
  
  .timeline-content {
    max-width: 100% !important;
    margin: 0 !important;
  }

  .education-timeline::before {
    left: 20px;
  }
  
  .education-dot {
    left: 8px;
  }
  
  .education-item {
    padding-left: 60px;
  }
}

@media (max-width: 768px) {
  html {
    font-size: 14px;
  }
  
  .theme-toggle {
    top: 1rem;
    right: 1rem;
    width: 50px;
    height: 50px;
  }
  
  .hamburger {
    display: flex;
  }
  
  .nav-menu {
    position: fixed;
    top: 0;
    right: -100%;
    width: 80%;
    height: 100vh;
    background: var(--bg-secondary);
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 2rem;
    transition: right 0.3s ease;
    z-index: 999;
    backdrop-filter: blur(15px);
    border-left: 2px solid var(--electric-blue);
  }
  
  .nav-menu.active {
    right: 0;
  }
  
  .nav-menu li a {
    font-size: 1.3rem;
  }
  
  .hero-text h1 {
    font-size: 2.8rem;
  }
  
  .typing-text {
    font-size: 1.3rem;
  }
  
  .section-title {
    font-size: 2.2rem;
  }
  
  .cta-buttons {
    flex-direction: column;
    align-items: center;
  }
  
  .projects-grid {
    grid-template-columns: 1fr;
  }
  
  .certificates-grid {
    grid-template-columns: 1fr;
  }
  
  .back-to-top {
    bottom: 1rem;
    right: 1rem;
    width: 50px;
    height: 50px;
  }

  .image-container {
    width: 320px;
    height: 400px;
  }

  .education-header {
    flex-direction: column;
    align-items: flex-start;
  }

  .education-details {
    flex-direction: column;
    gap: 1rem;
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 1rem;
  }
  
  section {
    padding: 4rem 0;
  }
  
  .hero-text h1 {
    font-size: 2.2rem;
  }
  
  .image-container {
    width: 280px;
    height: 350px;
  }
  
  .stat-item {
    padding: 2rem;
  }
  
  .timeline-content {
    padding: 2rem;
  }

  .education-content {
    padding: 2rem;
  }
  
  .contact-item {
    padding: 1.5rem;
  }
  
  .projects-grid {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
}

/* Animations */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(40px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.animate-fade-up {
  animation: fadeInUp 0.8s ease-out;
}

/* Scrollbar */
::-webkit-scrollbar {
  width: 10px;
}

::-webkit-scrollbar-track {
  background: var(--bg-secondary);
  border-radius: 5px;
}

::-webkit-scrollbar-thumb {
  background: var(--gradient-primary);
  border-radius: 5px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--electric-blue);
}

/* Selection */
::selection {
  background: var(--electric-blue);
  color: white;
}

::-moz-selection {
  background: var(--electric-blue);
  color: white;
}

/* Focus Indicators */
a:focus,
button:focus,
input:focus,
textarea:focus {
  outline: 3px solid var(--electric-blue);
  outline-offset: 2px;
}

/* High Contrast Mode */
@media (prefers-contrast: high) {
  :root {
    --border-color: var(--electric-blue);
    --text-secondary: var(--text-primary);
  }
}

/* Reduced Motion */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  
  .particle {
    display: none;
  }
}

/* Enhanced Glow Effects for Dark Mode Only */
:not([data-theme="light"]) .btn.primary {
  box-shadow: var(--card-shadow), 0 0 20px rgba(0, 212, 255, 0.2);
}

:not([data-theme="light"]) .education-year {
  box-shadow: 0 0 15px var(--electric-blue-glow);
}

:not([data-theme="light"]) .contact-icon {
  box-shadow: 0 0 20px var(--electric-blue-glow);
}

/* Additional Glow for Interactive Elements in Dark Mode */
:not([data-theme="light"]) .skill-tags span:hover,
:not([data-theme="light"]) .technologies span:hover,
:not([data-theme="light"]) .project-tech span:hover {
  text-shadow: 0 0 8px var(--electric-blue-glow);
}

/* Pulse animation for glow elements in dark mode */
@keyframes pulse-glow {
  0%, 100% {
    box-shadow: 0 0 10px var(--electric-blue-glow);
  }
  50% {
    box-shadow: 0 0 20px var(--electric-blue-glow), 0 0 30px rgba(0, 212, 255, 0.2);
  }
}

:not([data-theme="light"]) .education-dot,
:not([data-theme="light"]) .timeline-dot {
  animation: pulse-glow 3s ease-in-out infinite;
}