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

/* CSS Variables */
:root {
  /* Colors */
  --primary-color: #6366f1;
  --primary-dark: #4f46e5;
  --secondary-color: #f59e0b;
  --accent-color: #10b981;
  --text-primary: #ffffff;
  --text-secondary: #d1d5db;
  --text-light: #9ca3af;
  --bg-primary: #000000;
  --bg-secondary: #111111;
  --bg-dark: #000000;
  --bg-card: #1a1a1a;
  --border-color: #333333;
  --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.3);
  --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.4), 0 2px 4px -2px rgb(0 0 0 / 0.4);
  --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.4), 0 4px 6px -4px rgb(0 0 0 / 0.4);
  --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.4), 0 8px 10px -6px rgb(0 0 0 / 0.4);
  
  /* Typography */
  --font-family: 'Inter', sans-serif;
  --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;
  
  /* Spacing */
  --spacing-1: 0.25rem;
  --spacing-2: 0.5rem;
  --spacing-3: 0.75rem;
  --spacing-4: 1rem;
  --spacing-5: 1.25rem;
  --spacing-6: 1.5rem;
  --spacing-8: 2rem;
  --spacing-10: 2.5rem;
  --spacing-12: 3rem;
  --spacing-16: 4rem;
  --spacing-20: 5rem;
  
  /* Border Radius */
  --radius-sm: 0.25rem;
  --radius-md: 0.375rem;
  --radius-lg: 0.5rem;
  --radius-xl: 0.75rem;
  --radius-2xl: 1rem;
  
  /* Transitions */
  --transition-fast: 0.15s ease-in-out;
  --transition-normal: 0.3s ease-in-out;
  --transition-slow: 0.5s ease-in-out;
}

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

html {
  scroll-behavior: smooth;
}

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

html, body {
  overflow-x: hidden;
  width: 100%;
  box-sizing: border-box;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  font-weight: 600;
  line-height: 1.2;
  margin-bottom: var(--spacing-4);
}

h1 { font-size: var(--font-size-5xl); }
h2 { font-size: var(--font-size-4xl); }
h3 { font-size: var(--font-size-3xl); }
h4 { font-size: var(--font-size-2xl); }
h5 { font-size: var(--font-size-xl); }
h6 { font-size: var(--font-size-lg); }

p {
  margin-bottom: var(--spacing-4);
  color: var(--text-secondary);
}

/* Container */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-4);
}

/* Navigation */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  background: rgba(0, 0, 0, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border-color);
  z-index: 1000;
  transition: var(--transition-normal);
}

.nav-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-4);
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 70px;
}

.nav-logo {
  font-size: var(--font-size-2xl);
  font-weight: 700;
  color: var(--primary-color);
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.nav-menu {
  display: flex;
  list-style: none;
  gap: var(--spacing-8);
}

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

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

.nav-link::after {
  content: '';
  position: absolute;
  bottom: -5px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--primary-color);
  transition: var(--transition-fast);
}

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

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

.hamburger span {
  width: 25px;
  height: 3px;
  background: var(--text-secondary);
  transition: var(--transition-fast);
}

/* Hero Section */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  background: linear-gradient(135deg, var(--bg-primary) 0%, var(--bg-secondary) 100%);
  padding: var(--spacing-20) 0;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="grid" width="10" height="10" patternUnits="userSpaceOnUse"><path d="M 10 0 L 0 0 0 10" fill="none" stroke="%23333333" stroke-width="0.5"/></pattern></defs><rect width="100" height="100" fill="url(%23grid)"/></svg>');
  opacity: 0.3;
}

.hero-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-4);
  position: relative;
  z-index: 1;
}

.hero-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-16);
  align-items: center;
}

.hero-title {
  font-size: var(--font-size-5xl);
  font-weight: 700;
  margin-bottom: var(--spacing-6);
  line-height: 1.1;
}

.highlight {
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subtitle {
  font-size: var(--font-size-xl);
  color: var(--text-secondary);
  margin-bottom: var(--spacing-6);
}

.hero-description {
  font-size: var(--font-size-lg);
  color: var(--text-secondary);
  margin-bottom: var(--spacing-8);
  max-width: 500px;
}

.hero-buttons {
  display: flex;
  gap: var(--spacing-4);
  flex-wrap: wrap;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-4) var(--spacing-8);
  border-radius: var(--radius-lg);
  font-weight: 600;
  text-decoration: none;
  transition: var(--transition-fast);
  border: none;
  cursor: pointer;
  font-size: var(--font-size-base);
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
  color: white;
  box-shadow: var(--shadow-md);
}

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

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

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

/* Profile Card */
.profile-card {
  background: var(--bg-card);
  border-radius: var(--radius-2xl);
  padding: var(--spacing-8);
  box-shadow: var(--shadow-xl);
  text-align: center;
  position: relative;
  overflow: hidden;
}

.profile-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
}

.profile-img {
  width: 150px;
  height: 150px;
  border-radius: 50%;
  margin: 0 auto var(--spacing-6);
  object-fit: cover;
  border: 4px solid var(--border-color);
}

.profile-info h3 {
  color: var(--text-primary);
  margin-bottom: var(--spacing-2);
}

.profile-info p {
  color: var(--text-secondary);
  margin-bottom: var(--spacing-6);
}

.social-links {
  display: flex;
  justify-content: center;
  gap: var(--spacing-4);
}

.social-link {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--bg-card);
  color: var(--text-secondary);
  transition: var(--transition-fast);
}

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

/* Section Styles */
section {
  padding: var(--spacing-20) 0;
}

.section-header {
  text-align: center;
  margin-bottom: var(--spacing-16);
}

.section-title {
  color: var(--text-primary);
  margin-bottom: var(--spacing-4);
}

.section-subtitle {
  color: var(--text-secondary);
  font-size: var(--font-size-lg);
}

/* About Section */
.about {
  background: var(--bg-primary);
}

.about-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-16);
  align-items: center;
}

.about-text p {
  font-size: var(--font-size-lg);
  margin-bottom: var(--spacing-6);
}

.about-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-6);
  margin-top: var(--spacing-8);
}

.stat-item {
  text-align: center;
  padding: var(--spacing-6);
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
}

.stat-number {
  display: block;
  font-size: var(--font-size-3xl);
  font-weight: 700;
  color: var(--primary-color);
  margin-bottom: var(--spacing-2);
}

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

.about-image img {
  width: 100%;
  border-radius: var(--radius-2xl);
  box-shadow: var(--shadow-lg);
}

/* Projects Section */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: var(--spacing-8);
}

.project-card {
  background: var(--bg-card);
  border-radius: var(--radius-2xl);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  transition: var(--transition-normal);
}

.project-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-xl);
}

.project-image {
  position: relative;
  overflow: hidden;
  height: 250px;
}

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

.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;
  opacity: 0;
  transition: var(--transition-normal);
}

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

.project-links {
  display: flex;
  gap: var(--spacing-4);
  margin-bottom: var(--spacing-3);
}
.project-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--primary-color);
  font-weight: 500;
  font-size: var(--font-size-base);
  background: var(--bg-secondary);
  border-radius: var(--radius-md);
  padding: 6px 14px;
  transition: background 0.2s, color 0.2s, box-shadow 0.2s;
  box-shadow: var(--shadow-sm);
  text-decoration: none;
}
.project-link:hover {
  background: var(--primary-color);
  color: #fff;
  box-shadow: var(--shadow-md);
}
.project-link i {
  font-size: 1.1em;
}

.project-content {
  padding: var(--spacing-6);
}

.project-title {
  color: var(--text-primary);
  margin-bottom: var(--spacing-3);
  font-size: var(--font-size-xl);
}

.project-description {
  color: var(--text-secondary);
  margin-bottom: var(--spacing-4);
  line-height: 1.6;
}

.project-tech {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-2);
}

.tech-tag {
  background: var(--bg-secondary);
  color: var(--text-secondary);
  padding: var(--spacing-2) var(--spacing-3);
  border-radius: var(--radius-md);
  font-size: var(--font-size-sm);
  font-weight: 500;
}

/* Skills Section */
.skills {
  background: var(--bg-primary);
  position: relative;
  z-index: 1;
}

.skills::before {
  content: '';
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 80vw;
  height: 100%;
  background: radial-gradient(circle at 50% 20%, rgba(99,102,241,0.08) 0%, rgba(0,0,0,0) 80%);
  z-index: 0;
  pointer-events: none;
}

.skills-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--spacing-8);
  position: relative;
  z-index: 1;
}

.skill-category {
  background: var(--bg-card);
  padding: var(--spacing-8);
  border-radius: var(--radius-2xl);
  box-shadow: var(--shadow-md);
  border: 1.5px solid transparent;
  transition: box-shadow 0.3s, border 0.3s, transform 0.3s;
  position: relative;
  overflow: hidden;
}

.skill-category:hover {
  box-shadow: 0 0 24px 0 rgba(99,102,241,0.18), var(--shadow-xl);
  border: 1.5px solid var(--primary-color);
  transform: translateY(-4px) scale(1.02);
}

.category-title {
  color: var(--primary-color);
  margin-bottom: var(--spacing-6);
  font-size: var(--font-size-2xl);
  text-align: center;
  font-weight: 700;
  letter-spacing: 0.5px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-3);
}

.category-title i {
  font-size: 1.5em;
  color: var(--secondary-color);
  margin-right: 0.5em;
}

.skill-items {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-3);
  justify-content: center;
}

.skill-item {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0;
  background: none;
  box-shadow: none;
  border-radius: none;
  transition: none;
}

.skill-badge {
  display: inline-block;
  padding: 0.5em 1.2em;
  border-radius: 999px;
  background: linear-gradient(90deg, var(--primary-color) 0%, var(--secondary-color) 100%);
  color: var(--bg-primary);
  font-weight: 600;
  font-size: 1.05em;
  letter-spacing: 0.2px;
  box-shadow: 0 2px 8px 0 rgba(99,102,241,0.10);
  margin: 0.2em 0;
  border: none;
  transition: background 0.2s, color 0.2s, transform 0.2s;
  cursor: pointer;
}

.skill-badge:hover {
  background: linear-gradient(90deg, var(--secondary-color) 0%, var(--primary-color) 100%);
  color: var(--primary-color);
  transform: scale(1.08);
  box-shadow: 0 4px 16px 0 rgba(99,102,241,0.18);
}

/* Contact Section */
.contact-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-16);
}

.contact-info {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-6);
}

.contact-item {
  display: flex;
  align-items: center;
  gap: var(--spacing-4);
  padding: var(--spacing-6);
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  transition: var(--transition-fast);
}

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

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

.contact-details h3 {
  color: var(--text-primary);
  margin-bottom: var(--spacing-1);
  font-size: var(--font-size-lg);
}

.contact-details p {
  color: var(--text-secondary);
  margin-bottom: 0;
}

/* Contact Form */
.contact-form {
  background: var(--bg-card);
  padding: var(--spacing-8);
  border-radius: var(--radius-2xl);
  box-shadow: var(--shadow-md);
}

.form-group {
  margin-bottom: var(--spacing-6);
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: var(--spacing-4);
  border: 2px solid var(--border-color);
  border-radius: var(--radius-lg);
  font-size: var(--font-size-base);
  transition: var(--transition-fast);
  background: var(--bg-card);
  color: var(--text-primary);
}

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

.form-group textarea {
  resize: vertical;
  min-height: 120px;
}

/* Footer */
.footer {
  background: var(--bg-dark);
  color: white;
  padding: var(--spacing-8) 0;
  text-align: center;
}

.footer-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--spacing-4);
}

.footer-social {
  display: flex;
  gap: var(--spacing-4);
}

.footer-social .social-link {
  background: rgba(255, 255, 255, 0.1);
  color: white;
}

.footer-social .social-link:hover {
  background: var(--primary-color);
}

/* Responsive Design */
@media (max-width: 768px) {
  .hamburger {
    display: flex;
  }
  
  .nav-menu {
    position: fixed;
    top: 70px;
    left: -100%;
    width: 100%;
    height: calc(100vh - 70px);
    background: var(--bg-card);
    flex-direction: column;
    justify-content: flex-start;
    align-items: center;
    padding-top: var(--spacing-8);
    transition: var(--transition-normal);
    box-shadow: var(--shadow-lg);
  }
  
  .nav-menu.active {
    left: 0;
  }
  
  .hero-content {
    grid-template-columns: 1fr;
    text-align: center;
  }
  
  .hero-title {
    font-size: var(--font-size-4xl);
  }
  
  .about-content {
    grid-template-columns: 1fr;
    text-align: center;
  }
  
  .about-stats {
    grid-template-columns: 1fr;
  }
  
  .contact-content {
    grid-template-columns: 1fr;
  }
  
  .hero-buttons {
    justify-content: center;
  }
  
  .projects-grid {
    grid-template-columns: 1fr;
  }
  
  .skills-grid {
  grid-template-columns: 1fr;
  }
  
  .footer-content {
    flex-direction: column;
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 var(--spacing-3);
  }
  
  .hero {
    padding: var(--spacing-12) 0;
  }
  
  .hero-title {
    font-size: var(--font-size-3xl);
  }
  
  .section-title {
    font-size: var(--font-size-3xl);
  }
  
  .btn {
    padding: var(--spacing-3) var(--spacing-6);
    font-size: var(--font-size-sm);
  }
}

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

@keyframes fadeInLeft {
  from {
  opacity: 0;
    transform: translateX(-30px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

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

.hero-text {
  animation: fadeInLeft 1s ease-out;
}

.hero-image {
  animation: fadeInRight 1s ease-out;
}

.section-header {
  animation: fadeInUp 0.8s ease-out;
}

.project-card,
.skill-category {
  animation: fadeInUp 0.8s ease-out;
}

/* Smooth scrolling for anchor links */
html {
  scroll-behavior: smooth;
}

/* Custom scrollbar */
::-webkit-scrollbar {
  width: 8px;
}

::-webkit-scrollbar-track {
  background: var(--bg-primary);
}

::-webkit-scrollbar-thumb {
  background: var(--primary-color);
  border-radius: var(--radius-md);
}

::-webkit-scrollbar-thumb:hover {
  background: var(--primary-dark);
}

/* Timeline Styles */
.timeline {
  position: relative;
  margin-top: var(--spacing-12);
  padding-left: var(--spacing-8);
}

.timeline::before {
  content: '';
  position: absolute;
  left: 20px;
  top: 0;
  bottom: 0;
  width: 2px;
  background: linear-gradient(to bottom, var(--primary-color), var(--secondary-color));
  border-radius: 1px;
}

.timeline-item {
  position: relative;
  margin-bottom: var(--spacing-8);
  padding-left: var(--spacing-12);
}

.timeline-item:last-child {
  margin-bottom: 0;
}

.timeline-dot {
  position: absolute;
  left: -8px;
  top: 0;
  width: 36px;
  height: 36px;
  background: var(--bg-card);
  border: 3px solid var(--primary-color);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary-color);
  font-size: 14px;
  z-index: 2;
  transition: all 0.3s ease;
  box-shadow: var(--shadow-md);
}

.timeline-item:hover .timeline-dot {
  background: var(--primary-color);
  color: var(--bg-primary);
  transform: scale(1.1);
  box-shadow: var(--shadow-lg);
}

.timeline-content {
  background: var(--bg-card);
  border-radius: var(--radius-2xl);
  box-shadow: var(--shadow-md);
  padding: var(--spacing-6);
  border: 1px solid var(--border-color);
  transition: all 0.3s ease;
  position: relative;
}

.timeline-content::before {
  content: '';
  position: absolute;
  left: -8px;
  top: 20px;
  width: 0;
  height: 0;
  border-top: 8px solid transparent;
  border-bottom: 8px solid transparent;
  border-right: 8px solid var(--bg-card);
}

.timeline-content:hover {
  box-shadow: var(--shadow-xl);
  transform: translateY(-4px);
  border-color: var(--primary-color);
}

.timeline-content h3 {
  color: var(--primary-color);
  font-size: var(--font-size-xl);
  margin-bottom: var(--spacing-2);
  font-weight: 600;
}

.timeline-content .exp-org {
  font-size: var(--font-size-lg);
  color: var(--text-secondary);
  font-weight: 500;
  margin-bottom: var(--spacing-3);
}

.timeline-content ul {
  margin: 0;
  padding-left: var(--spacing-4);
  color: var(--text-secondary);
  font-size: var(--font-size-base);
  line-height: 1.6;
}

.timeline-content li {
  margin-bottom: var(--spacing-2);
}

.timeline-content li:last-child {
  margin-bottom: 0;
}

.exp-link {
  color: var(--primary-color);
  font-size: var(--font-size-base);
  margin-left: var(--spacing-2);
  text-decoration: underline;
  transition: color 0.2s;
}

.exp-link:hover {
  color: var(--secondary-color);
}

/* Responsive Timeline */
@media (max-width: 768px) {
  .timeline {
    padding-left: var(--spacing-6);
  }
  
  .timeline::before {
    left: 16px;
  }
  
  .timeline-item {
    padding-left: var(--spacing-10);
  }
  
  .timeline-dot {
    left: -6px;
    width: 32px;
    height: 32px;
    font-size: 12px;
  }
  
  .timeline-content {
    padding: var(--spacing-5);
  }
  
  .timeline-content h3 {
    font-size: var(--font-size-lg);
  }
  
  .timeline-content .exp-org {
    font-size: var(--font-size-base);
  }
}

@media (max-width: 480px) {
  .timeline {
    padding-left: var(--spacing-4);
  }
  
  .timeline::before {
    left: 12px;
  }
  
  .timeline-item {
    padding-left: var(--spacing-8);
  }
  
  .timeline-dot {
    left: -4px;
    width: 28px;
    height: 28px;
    font-size: 10px;
  }
  
  .timeline-content {
    padding: var(--spacing-4);
  }
}

.achievements-list {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-6);
  margin-top: var(--spacing-12);
}

.achievement-card {
    display: flex;
    align-items: flex-start;
  gap: var(--spacing-4);
  background: var(--bg-card);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-md);
  border: 1px solid var(--border-color);
  padding: var(--spacing-6) var(--spacing-6);
  font-size: var(--font-size-lg);
  color: var(--text-primary);
  transition: box-shadow 0.3s, transform 0.3s;
}
.achievement-card:hover {
  box-shadow: var(--shadow-xl);
  transform: translateY(-2px) scale(1.01);
}
.ach-icon {
  font-size: 2rem;
  margin-right: var(--spacing-2);
  flex-shrink: 0;
}
@media (max-width: 900px) {
  .achievements-list {
    grid-template-columns: 1fr;
  }
}
@media (max-width: 600px) {
  .achievement-card {
    font-size: var(--font-size-base);
    padding: var(--spacing-4) var(--spacing-3);
  }
  .ach-icon {
    font-size: 1.5rem;
  }
}

/* Education Timeline Styles */
.education-timeline {
  position: relative;
  margin-top: var(--spacing-12);
  padding-left: var(--spacing-8);
}

.education-timeline::before {
  content: '';
  position: absolute;
  left: 20px;
  top: 0;
  bottom: 0;
  width: 2px;
  background: linear-gradient(to bottom, var(--secondary-color), var(--primary-color));
  border-radius: 1px;
}

.edu-timeline-item {
  position: relative;
  margin-bottom: var(--spacing-8);
  padding-left: var(--spacing-12);
}

.edu-timeline-item:last-child {
  margin-bottom: 0;
}

.edu-timeline-dot {
  position: absolute;
  left: -8px;
  top: 0;
  width: 36px;
  height: 36px;
  background: var(--bg-card);
  border: 3px solid var(--secondary-color);
  border-radius: 50%;
    display: flex;
    align-items: center;
  justify-content: center;
  color: var(--secondary-color);
  font-size: 14px;
  z-index: 2;
  transition: all 0.3s ease;
  box-shadow: var(--shadow-md);
}

.edu-timeline-item:hover .edu-timeline-dot {
  background: var(--secondary-color);
  color: var(--bg-primary);
  transform: scale(1.1);
  box-shadow: var(--shadow-lg);
}

.edu-timeline-content {
  background: var(--bg-card);
  border-radius: var(--radius-2xl);
  box-shadow: var(--shadow-md);
  padding: var(--spacing-6);
  border: 1px solid var(--border-color);
  transition: all 0.3s ease;
  position: relative;
}

.edu-timeline-content::before {
  content: '';
  position: absolute;
  left: -8px;
  top: 20px;
  width: 0;
  height: 0;
  border-top: 8px solid transparent;
  border-bottom: 8px solid transparent;
  border-right: 8px solid var(--bg-card);
}

.edu-timeline-content:hover {
  box-shadow: var(--shadow-xl);
  transform: translateY(-4px);
  border-color: var(--secondary-color);
}

.edu-timeline-card {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-4);
}

.edu-header {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-2);
}

.edu-level {
  display: inline-block;
  background: linear-gradient(135deg, var(--secondary-color), var(--primary-color));
  color: var(--bg-primary);
  padding: var(--spacing-1) var(--spacing-3);
  border-radius: var(--radius-lg);
  font-size: var(--font-size-sm);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  align-self: flex-start;
}

.edu-header h3 {
  color: var(--primary-color);
  font-size: var(--font-size-xl);
  font-weight: 600;
  margin: 0;
  line-height: 1.3;
}

.edu-degree {
  font-size: var(--font-size-lg);
  color: var(--text-secondary);
  font-weight: 500;
  margin: 0;
}

.edu-details {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-3);
}

.edu-date, .edu-score {
    display: flex;
    align-items: center;
  gap: var(--spacing-2);
  color: var(--text-secondary);
  font-size: var(--font-size-base);
}

.edu-date i, .edu-score i {
  color: var(--secondary-color);
  font-size: 14px;
  width: 16px;
  text-align: center;
}

.edu-score {
  font-weight: 500;
  color: var(--text-primary);
}

/* Responsive Education Timeline */
@media (max-width: 768px) {
  .education-timeline {
    padding-left: var(--spacing-6);
  }
  
  .education-timeline::before {
    left: 16px;
  }
  
  .edu-timeline-item {
    padding-left: var(--spacing-10);
  }
  
  .edu-timeline-dot {
    left: -6px;
    width: 32px;
    height: 32px;
    font-size: 12px;
  }
  
  .edu-timeline-content {
    padding: var(--spacing-5);
  }
  
  .edu-header h3 {
    font-size: var(--font-size-lg);
  }
  
  .edu-degree {
    font-size: var(--font-size-base);
  }
}

@media (max-width: 480px) {
  .education-timeline {
    padding-left: var(--spacing-4);
  }
  
  .education-timeline::before {
    left: 12px;
  }
  
  .edu-timeline-item {
    padding-left: var(--spacing-8);
  }
  
  .edu-timeline-dot {
    left: -4px;
    width: 28px;
    height: 28px;
    font-size: 10px;
  }
  
  .edu-timeline-content {
    padding: var(--spacing-4);
  }
  
  .edu-header h3 {
    font-size: var(--font-size-base);
  }
  
  .edu-degree {
    font-size: var(--font-size-sm);
  }
}

.skills-icon-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(80px, 1fr));
  gap: 2.5rem 1.5rem;
  justify-items: center;
  align-items: start;
  margin-top: 2.5rem;
  position: relative;
}

.skills-category-label {
  grid-column: 1 / -1;
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--primary-color);
  margin: 1.5rem 0 0.5rem 0;
  letter-spacing: 1px;
  text-align: left;
  justify-self: start;
  opacity: 0.85;
}

.skill-icon {
  width: 68px;
  height: 68px;
  background: linear-gradient(135deg, rgba(99,102,241,0.18) 0%, rgba(139,92,246,0.12) 100%);
  border-radius: 50%;
    display: flex;
  align-items: center;
    justify-content: center;
  font-size: 2.1rem;
  color: var(--primary-color);
  box-shadow: 0 2px 12px 0 rgba(99,102,241,0.10);
  position: relative;
  cursor: pointer;
  transition: box-shadow 0.25s, transform 0.22s, background 0.22s;
  border: 2px solid transparent;
}

.skill-icon:hover {
  box-shadow: 0 0 24px 0 var(--primary-color), 0 2px 16px 0 rgba(99,102,241,0.18);
  background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
  color: var(--bg-primary);
  border: 2px solid var(--primary-color);
  transform: scale(1.13);
  z-index: 2;
}

.skill-icon i, .skill-icon span {
  color: inherit;
  font-size: 2.1rem;
  font-weight: 700;
  text-align: center;
  width: 100%;
    height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
}

.skill-icon[data-tooltip]:hover::after {
  content: attr(data-tooltip);
  position: absolute;
  left: 50%;
  bottom: 110%;
  transform: translateX(-50%);
  background: var(--bg-card);
  color: var(--primary-color);
  padding: 0.5em 1em;
  border-radius: 8px;
  font-size: 0.98em;
  font-weight: 500;
  white-space: pre-line;
  box-shadow: 0 2px 12px 0 rgba(99,102,241,0.12);
  opacity: 1;
  pointer-events: none;
  z-index: 10;
  transition: opacity 0.2s, transform 0.2s;
}

.skill-icon[data-tooltip]::after {
  opacity: 0;
  pointer-events: none;
}

.skill-icon[data-tooltip]:hover::after {
    opacity: 1;
  pointer-events: none;
}

@media (max-width: 900px) {
  .skills-icon-grid {
    grid-template-columns: repeat(auto-fit, minmax(70px, 1fr));
    gap: 2rem 1rem;
  }
  .skill-icon {
    width: 56px;
    height: 56px;
    font-size: 1.5rem;
  }
}
@media (max-width: 600px) {
  .skills-icon-grid {
    grid-template-columns: repeat(auto-fit, minmax(60px, 1fr));
    gap: 1.2rem 0.5rem;
    row-gap: 2.2rem !important; /* Increase row gap to prevent overlap */
  }
  .skill-icon {
    width: 44px;
    height: 44px;
    font-size: 1.1rem;
  }
  .skills-category-label {
    font-size: 1rem;
    margin: 1rem 0 0.3rem 0;
  }
}

.skills-simple-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(170px, 1fr));
  gap: 2.2rem 1.2rem;
  justify-items: start;
  align-items: center;
  margin-top: 2.5rem;
  position: relative;
  background: rgba(24,24,24,0.92);
  border-radius: 2rem;
  box-shadow: 0 6px 32px 0 rgba(0,0,0,0.22);
  padding: 2.7rem 2.2rem;
  backdrop-filter: blur(10px) saturate(1.3);
  border: 1.5px solid rgba(255,255,255,0.08);
}

.skills-category-label {
  grid-column: 1 / -1;
  font-size: 1.18rem;
  font-weight: 800;
  color: #fafafa;
  margin: 1.3rem 0 0.7rem 0;
  letter-spacing: 1.5px;
  text-align: left;
  justify-self: start;
  opacity: 0.95;
  text-transform: uppercase;
  letter-spacing: 2.5px;
}

.skill-simple {
  display: flex;
  align-items: center;
  gap: 1em;
  font-size: 1.13rem;
  font-weight: 600;
  color: #f3f3f3;
  background: rgba(40,40,40,0.85);
  border-radius: 1.3em;
  padding: 0.85em 1.5em 0.85em 1.1em;
  box-shadow: 0 2px 12px 0 rgba(0,0,0,0.13);
  border: 1.5px solid rgba(255,255,255,0.10);
  transition: background 0.18s, color 0.18s, box-shadow 0.18s, border 0.18s;
  margin-bottom: 0.2em;
  position: relative;
}

.skill-simple i {
  font-size: 1.6em;
  color: #fafafa;
  filter: none;
  opacity: 0.92;
}

.skill-simple span {
  color: #fafafa;
  font-weight: 700;
  letter-spacing: 0.7px;
}

.skill-simple:hover {
  background: rgba(60,60,60,0.98);
  color: #fff;
  box-shadow: 0 6px 24px 0 rgba(0,0,0,0.22);
  border: 1.5px solid #fff;
  z-index: 2;
}

@media (max-width: 900px) {
  .skills-simple-grid {
    grid-template-columns: repeat(auto-fit, minmax(130px, 1fr));
    gap: 1.3rem 0.8rem;
    padding: 1.7rem 0.8rem;
  }
  .skill-simple {
    font-size: 1.01rem;
    padding: 0.6em 1em 0.6em 0.8em;
  }
}
@media (max-width: 600px) {
  .skills-simple-grid {
    display: flex;
    flex-direction: column;
    gap: 0.7rem;
    padding: 1.1rem 0.3rem;
  }
  .skills-category-label {
    width: 100%;
    margin: 1.2rem 0 0.3rem 0;
    font-size: 1.08rem;
    text-align: left;
  }
  .skill-simple {
    width: 100%;
    justify-content: flex-start;
    font-size: 1.05rem;
    padding: 0.7em 1em 0.7em 0.8em;
    margin-bottom: 0.1em;
  }
}

@media (max-width: 1200px) {
  .container {
    max-width: 98vw;
    padding: 0 1.5rem;
  }
}
@media (max-width: 900px) {
  .container {
    max-width: 100vw;
    padding: 0 1rem;
  }
  .section-title {
    font-size: 2rem;
  }
  .section-subtitle {
    font-size: 1.1rem;
  }
  .project-card, .education-timeline, .skills-simple-grid {
    padding: 1.2rem 0.5rem;
  }
}
@media (max-width: 600px) {
  .container {
    padding: 0 0.3rem;
  }
  .section-title {
    font-size: 1.3rem;
  }
  .section-subtitle {
    font-size: 0.98rem;
  }
  .project-card, .education-timeline, .skills-simple-grid {
    padding: 0.5rem 0.1rem;
  }
  .footer-content {
    flex-direction: column;
    gap: 1.2rem;
    align-items: center;
  }
  .footer-social {
    justify-content: center;
    width: 100%;
  }
}
@media (max-width: 900px) {
  .navbar {
    position: fixed;
    width: 100vw;
    left: 0;
    right: 0;
    z-index: 1000;
  }
  .hero {
    padding-top: 70px;
  }
}
@media (max-width: 600px) {
  .hero {
    padding-top: 90px; /* Increased from 70px for more space above title */
    padding-bottom: 1.5rem;
    min-height: unset;
  }
  .hero-title {
    margin-top: 1.2rem; /* Add extra margin above the title */
  }
  .hero-content {
    flex-direction: column;
    align-items: center;
    justify-content: flex-start;
    width: 100%;
    padding: 0 0.5rem;
  }
  .profile-card {
    margin: 0 auto;
    width: 100%;
    max-width: 340px;
    box-sizing: border-box;
  }
  .container, .section, .about-content, .projects-grid, .skills-simple-grid, .education-timeline, .contact-content {
    width: 100%;
    max-width: 100vw;
    box-sizing: border-box;
    margin: 0 auto;
    padding-left: 0.5rem;
    padding-right: 0.5rem;
  }
  .skills-icon-grid {
    row-gap: 2.2rem !important; /* Increase row gap to prevent overlap */
  }
  .skill-icon {
    width: 44px;
    height: 44px;
    font-size: 1.1rem;
  }
  .skills-category-label {
    font-size: 1rem;
    margin: 1rem 0 0.3rem 0;
  }
}
img, .project-image img {
  max-width: 100%;
  height: auto;
  border-radius: 1.2rem;
  object-fit: cover;
}
.project-card {
  transition: box-shadow 0.25s, transform 0.22s;
}
.project-card:hover {
  box-shadow: 0 8px 32px 0 rgba(0,0,0,0.22);
  transform: translateY(-4px) scale(1.01);
}
.btn, .btn-primary, .btn-secondary {
  transition: background 0.2s, color 0.2s, box-shadow 0.2s, transform 0.2s;
}
.btn:hover, .btn-primary:hover, .btn-secondary:hover {
  transform: scale(1.04);
  box-shadow: 0 2px 12px 0 rgba(0,0,0,0.13);
}
.section {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.7s cubic-bezier(.4,0,.2,1), transform 0.7s cubic-bezier(.4,0,.2,1);
}
.section.visible {
  opacity: 1;
  transform: none;
}