/* CSS Custom Properties (Variables) */
:root {
  /* Colors */
  --primary-color: 220 91% 55%; /* #2563eb */
  --primary-dark: 220 91% 45%; /* #1d4ed8 */
  --secondary-color: 262 52% 47%; /* #7c3aed */
  --accent-color: 142 71% 45%; /* #10b981 */
  --background: 210 11% 98%; /* #f8fafc */
  --surface: 0 0% 100%; /* #ffffff */
  --text-primary: 220 9% 18%; /* #1e293b */
  --text-secondary: 220 5% 46%; /* #64748b */
  --text-muted: 220 5% 65%; /* #94a3b8 */
  --border: 220 5% 91%; /* #e2e8f0 */
  --shadow: 220 5% 15%; /* #334155 */
  
  /* Gradients */
  --gradient-primary: linear-gradient(135deg, hsl(var(--primary-color)) 0%, hsl(var(--secondary-color)) 100%);
  --gradient-surface: linear-gradient(135deg, hsl(var(--surface)) 0%, hsl(var(--background)) 100%);
  
  /* Typography */
  --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 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;
  --font-weight-light: 300;
  --font-weight-normal: 400;
  --font-weight-medium: 500;
  --font-weight-semibold: 600;
  --font-weight-bold: 700;
  
  /* Spacing */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;
  --space-24: 6rem;
  --space-32: 8rem;
  
  /* Border Radius */
  --radius-sm: 0.25rem;
  --radius: 0.5rem;
  --radius-md: 0.75rem;
  --radius-lg: 1rem;
  --radius-xl: 1.5rem;
  --radius-full: 9999px;
  
  /* Shadows */
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px 0 rgba(0, 0, 0, 0.06);
  --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);
  
  /* Transitions */
  --transition-fast: 150ms ease-in-out;
  --transition: 300ms ease-in-out;
  --transition-slow: 500ms ease-in-out;
  
  /* Z-index */
  --z-dropdown: 1000;
  --z-sticky: 1020;
  --z-fixed: 1030;
  --z-modal: 1040;
  --z-popover: 1050;
  --z-tooltip: 1060;
}

/* Dark mode support */
@media (prefers-color-scheme: dark) {
  :root {
    --background: 220 15% 6%; /* #0f172a */
    --surface: 220 15% 9%; /* #1e293b */
    --text-primary: 210 11% 96%; /* #f1f5f9 */
    --text-secondary: 220 5% 65%; /* #94a3b8 */
    --text-muted: 220 5% 46%; /* #64748b */
    --border: 220 15% 15%; /* #334155 */
  }
}

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

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

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

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

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

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

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

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

/* Container */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-6);
}

@media (max-width: 768px) {
  .container {
    padding: 0 var(--space-4);
  }
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-6);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  text-decoration: none;
  border: none;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-fast);
  position: relative;
  overflow: hidden;
}

.btn-primary {
  background: var(--gradient-primary);
  color: white;
  box-shadow: var(--shadow-md);
}

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

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

.btn-secondary:hover {
  background-color: hsl(var(--surface));
  border-color: hsl(var(--primary-color));
  color: hsl(var(--primary-color));
}

/* Navigation */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  background-color: hsla(var(--surface), 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid hsl(var(--border));
  z-index: var(--z-fixed);
  transition: all var(--transition);
}

.navbar.scrolled {
  background-color: hsla(var(--surface), 0.98);
  box-shadow: var(--shadow-md);
}

.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-4) var(--space-6);
  max-width: 1200px;
  margin: 0 auto;
}

.nav-logo a {
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-bold);
  color: hsl(var(--text-primary));
  text-decoration: none;
}

.nav-menu {
  display: flex;
  list-style: none;
  gap: var(--space-8);
  margin: 0;
  padding: 0;
}

.nav-link {
  color: hsl(var(--text-secondary));
  font-weight: var(--font-weight-medium);
  transition: color var(--transition-fast);
  position: relative;
}

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

.nav-link::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--gradient-primary);
  transition: width var(--transition-fast);
}

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

.nav-toggle {
  display: none;
  flex-direction: column;
  cursor: pointer;
  gap: var(--space-1);
}

.bar {
  width: 24px;
  height: 3px;
  background-color: hsl(var(--text-primary));
  transition: all var(--transition-fast);
  border-radius: var(--radius-full);
}

@media (max-width: 768px) {
  .nav-menu {
    position: fixed;
    top: 70px;
    left: -100%;
    width: 100%;
    height: calc(100vh - 70px);
    background-color: hsl(var(--surface));
    flex-direction: column;
    justify-content: flex-start;
    align-items: center;
    padding-top: var(--space-12);
    transition: left var(--transition);
    gap: var(--space-6);
  }

  .nav-menu.active {
    left: 0;
  }

  .nav-toggle {
    display: flex;
  }

  .nav-toggle.active .bar:nth-child(2) {
    opacity: 0;
  }

  .nav-toggle.active .bar:nth-child(1) {
    transform: translateY(8px) rotate(45deg);
  }

  .nav-toggle.active .bar:nth-child(3) {
    transform: translateY(-8px) rotate(-45deg);
  }
}

/* Hero Section */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  background: var(--gradient-surface);
  padding-top: 80px;
}

.hero-container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-6);
}

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

.hero-title {
  font-size: var(--font-size-5xl);
  font-weight: var(--font-weight-bold);
  margin-bottom: var(--space-4);
  color: hsl(var(--text-primary));
}

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

.hero-subtitle {
  font-size: var(--font-size-2xl);
  color: hsl(var(--text-secondary));
  margin-bottom: var(--space-6);
  font-weight: var(--font-weight-medium);
}

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

.hero-buttons {
  display: flex;
  gap: var(--space-4);
  margin-bottom: var(--space-8);
}

.hero-social {
  display: flex;
  gap: var(--space-4);
}

.hero-social a {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  background-color: hsl(var(--surface));
  border: 1px solid hsl(var(--border));
  border-radius: var(--radius-full);
  color: hsl(var(--text-secondary));
  transition: all var(--transition-fast);
  box-shadow: var(--shadow-sm);
}

.hero-social a:hover {
  color: hsl(var(--primary-color));
  border-color: hsl(var(--primary-color));
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.hero-image {
  display: flex;
  justify-content: center;
  align-items: center;
}

.profile-img {
    width: 295px;
    height: 295px;
    object-fit: cover;
    border-radius: 50%;
    border: 3px solid #96b9ea;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.25);
    transition: transform 0.3s ease;
}

.profile-img:hover {
    transform: scale(1.05);
}

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

.scroll-indicator {
  position: absolute;
  bottom: var(--space-8);
  left: 50%;
  transform: translateX(-50%);
  animation: bounce 2s infinite;
}

.scroll-indicator a {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  color: hsl(var(--text-muted));
  font-size: var(--font-size-lg);
}

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

@media (max-width: 768px) {
  .hero-content {
    grid-template-columns: 1fr;
    gap: var(--space-8);
    text-align: center;
  }

  .hero-title {
    font-size: var(--font-size-3xl);
  }

  .hero-subtitle {
    font-size: var(--font-size-xl);
  }

  .hero-buttons {
    flex-direction: column;
    align-items: center;
  }

  .hero-buttons .btn {
    width: 200px;
  }
}

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

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

.section-title {
  font-size: var(--font-size-3xl);
  font-weight: var(--font-weight-bold);
  margin-bottom: var(--space-4);
  color: hsl(var(--text-primary));
}

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

/* About Section */
.about {
  background-color: hsl(var(--surface));
}

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

.about-text h3 {
  font-size: var(--font-size-2xl);
  margin-bottom: var(--space-6);
  color: hsl(var(--text-primary));
}

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

.stat {
  text-align: center;
}

.stat h4 {
  font-size: var(--font-size-3xl);
  font-weight: var(--font-weight-bold);
  color: hsl(var(--primary-color));
  margin-bottom: var(--space-2);
}

.stat p {
  font-size: var(--font-size-sm);
  color: hsl(var(--text-secondary));
  margin: 0;
}

.about-skills h3 {
  font-size: var(--font-size-2xl);
  margin-bottom: var(--space-6);
  color: hsl(var(--text-primary));
}

.skills-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-6);
}

.skill-item {
  padding: var(--space-6);
  background-color: hsl(var(--background));
  border-radius: var(--radius-lg);
  border: 1px solid hsl(var(--border));
  transition: all var(--transition-fast);
}

.skill-item:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: hsl(var(--primary-color));
}

.skill-item i {
  font-size: var(--font-size-2xl);
  color: hsl(var(--primary-color));
  margin-bottom: var(--space-4);
}

.skill-item h4 {
  font-size: var(--font-size-lg);
  margin-bottom: var(--space-3);
  color: hsl(var(--text-primary));
}

.skill-item p {
  font-size: var(--font-size-sm);
  color: hsl(var(--text-secondary));
  margin: 0;
}

@media (max-width: 768px) {
  .about-content {
    grid-template-columns: 1fr;
    gap: var(--space-8);
  }

  .about-stats {
    grid-template-columns: 1fr;
    gap: var(--space-4);
  }

  .skills-grid {
    grid-template-columns: 1fr;
  }
}

/* ==================== */
/* EXPERIENCE SECTION - NOW COMES BEFORE SKILLS */
/* ==================== */
.experience {
  background-color: hsl(var(--background));
}

.experience-container {
  max-width: 1000px;
  margin: 0 auto;
  padding: var(--space-8) 0;
}

.current-positions {
  margin-bottom: var(--space-16);
}

.current-positions h3 {
  font-size: var(--font-size-xl);
  color: hsl(var(--text-primary));
  margin-bottom: var(--space-8);
  text-align: center;
  position: relative;
}

.current-positions h3::after {
  content: '';
  position: absolute;
  bottom: -var(--space-2);
  left: 50%;
  transform: translateX(-50%);
  width: 60px;
  height: 2px;
  background: hsl(var(--text-muted));
  border-radius: var(--radius-full);
}

.current-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--space-6);
  margin-bottom: var(--space-8);
}

/* For exactly 3 items on larger screens */
@media (min-width: 1000px) {
  .current-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-8);
  }
}

/* For tablet view */
@media (min-width: 700px) and (max-width: 999px) {
  .current-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-6);
  }
}

/* For mobile view */
@media (max-width: 699px) {
  .current-grid {
    grid-template-columns: 1fr;
    gap: var(--space-4);
  }
}

.position-card {
  background: hsla(var(--surface), 0.95);
  border: 1px solid hsla(var(--border), 0.2);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  box-shadow: var(--shadow-md);
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative;
  overflow: hidden;
  cursor: pointer;
  backdrop-filter: blur(10px);
  
  /* Animation setup */
  animation: slideInUp 0.6s ease-out forwards;
  opacity: 0;
  transform: translateY(20px);
}

/* Staggered animation delays */
.position-card:nth-child(1) { animation-delay: 0.1s; }
.position-card:nth-child(2) { animation-delay: 0.2s; }
.position-card:nth-child(3) { animation-delay: 0.3s; }

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

.position-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: hsl(var(--border));
  transition: background-color 0.3s ease;
}

.position-card:hover {
  transform: translateY(-8px) scale(1.02);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
  border-color: hsl(var(--primary-color));
}

.position-card:hover::before {
  background: hsl(var(--primary-color));
}

.position-card.expanded {
  transform: translateY(-4px) scale(1.01);
  box-shadow: 0 16px 32px rgba(0, 0, 0, 0.12);
  border-color: hsl(var(--primary-color));
}

.position-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: var(--space-4);
}

.position-info {
  flex: 1;
}

.position-badge {
  display: inline-block;
  background: hsl(var(--surface-variant));
  color: hsl(var(--text-muted));
  padding: var(--space-1) var(--space-3);
  border-radius: var(--radius-full);
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-medium);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  opacity: 0.8;
  margin-bottom: var(--space-2);
  border: 1px solid hsl(var(--border));
  transition: all 0.3s ease;
}

.position-badge:hover {
  background: hsl(var(--primary-color));
  color: white;
  transform: translateY(-1px);
}

.position-title {
  font-size: var(--font-size-lg);
  margin-bottom: var(--space-2);
  font-weight: var(--font-weight-bold);
  color: hsl(var(--text-primary));
  line-height: 1.3;
}

.position-company {
  font-size: var(--font-size-base);
  color: hsl(var(--primary-color));
  margin-bottom: var(--space-2);
  font-weight: var(--font-weight-semibold);
  transition: color 0.3s ease;
}

.position-card:hover .position-company {
  color: hsl(var(--text-primary));
}

.position-duration {
  font-size: var(--font-size-sm);
  color: hsl(var(--text-muted));
  font-weight: var(--font-weight-medium);
  display: flex;
  align-items: center;
  gap: var(--space-1);
}

.position-duration::before {
  content: '•';
  font-size: 12px;
  color: hsl(var(--text-muted));
}

.expand-icon {
  width: 28px;
  height: 28px;
  border-radius: var(--radius-full);
  background: hsl(var(--surface-variant));
  display: flex;
  align-items: center;
  justify-content: center;
  color: hsl(var(--text-muted));
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  flex-shrink: 0;
  margin-left: var(--space-4);
  cursor: pointer;
  border: 2px solid transparent;
}

.expand-icon:hover {
  background: hsl(var(--text-secondary));
  color: white;
  transform: scale(1.05);
}

.expand-icon.expanded {
  background: hsl(var(--text-secondary));
  color: white;
}

.expand-icon svg {
  transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  width: 16px;
  height: 16px;
}

.expand-icon.expanded svg {
  transform: rotate(180deg) scale(1.1);
}

.position-details {
  max-height: 0;
  overflow: hidden;
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  margin-top: var(--space-4);
  opacity: 0;
}

.position-details.expanded {
  max-height: 600px;
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  opacity: 1;
}

.position-details-content {
  padding-top: var(--space-4);
  border-top: 1px solid hsla(var(--border), 0.5);
  transform: translateY(-10px);
  transition: transform 0.3s ease-out 0.1s;
}

.position-details.expanded .position-details-content {
  transform: translateY(0);
}

.position-description {
  color: hsl(var(--text-secondary));
  margin-bottom: var(--space-4);
  line-height: 1.6;
  font-size: var(--font-size-sm);
  font-style: italic;
  padding: var(--space-3);
  background: hsl(var(--surface-variant));
  border-radius: var(--radius-md);
  border-left: 3px solid hsl(var(--text-muted));
}

.position-highlights {
  list-style: none;
  padding: 0;
  margin: 0;
}

.position-highlights li {
  position: relative;
  padding-left: var(--space-8);
  margin-bottom: var(--space-3);
  color: hsl(var(--text-secondary));
  font-size: var(--font-size-sm);
  line-height: 1.6;
  transition: all 0.2s ease;
  border-radius: var(--radius-sm);
  padding-top: var(--space-1);
  padding-bottom: var(--space-1);
}

.position-highlights li:hover {
  background: hsl(var(--surface-variant));
  padding-left: var(--space-10);
}

.position-highlights li::before {
  content: '▸';
  position: absolute;
  left: var(--space-2);
  top: var(--space-1);
  color: hsl(var(--text-muted));
  font-weight: var(--font-weight-bold);
  font-size: 16px;
  transition: all 0.2s ease;
}

.position-highlights li:hover::before {
  color: hsl(var(--text-secondary));
  transform: scale(1.1);
  left: var(--space-3);
}

/* Mobile Responsiveness */
@media (max-width: 768px) {
  .experience-container {
    padding: var(--space-6) var(--space-4);
  }
  
  .position-card {
    padding: var(--space-4);
  }
  
  .position-header {
    flex-direction: column;
    gap: var(--space-2);
    align-items: flex-start;
  }
  
  .expand-icon {
    align-self: flex-end;
    margin: 0;
    margin-top: var(--space-2);
  }
  
  .position-title {
    font-size: var(--font-size-base);
  }
  
  .position-company {
    font-size: var(--font-size-sm);
  }
  
  .position-highlights li {
    padding-left: var(--space-6);
    font-size: var(--font-size-xs);
  }
  
  .position-highlights li:hover {
    padding-left: var(--space-8);
  }
}

/* Tablet specific adjustments */
@media (min-width: 769px) and (max-width: 999px) {
  .position-card {
    padding: var(--space-5);
  }
}

/* Large screen enhancements */
@media (min-width: 1200px) {
  .experience-container {
    max-width: 1200px;
  }
  
  .current-grid {
    gap: var(--space-10);
  }
  
  .position-card {
    padding: var(--space-8);
  }
}

/* Dark mode specific enhancements */
@media (prefers-color-scheme: dark) {
  .position-card {
    background: hsla(var(--surface), 0.9);
    backdrop-filter: blur(15px);
  }
  
  .position-badge {
    background: hsl(var(--surface));
    color: hsl(var(--text-secondary));
    border-color: hsl(var(--border));
  }
}

/* Reduced motion support */
@media (prefers-reduced-motion: reduce) {
  .position-card {
    animation: none;
    opacity: 1;
    transform: none;
  }
  
  .position-card:hover {
    transform: none;
  }
  
  .expand-icon svg {
    transition: none;
  }
  
  .position-details {
    transition: max-height 0.2s ease;
  }
}
/* Education Section */
.education {
  margin-top: var(--space-16);
}

.education h3 {
  font-size: var(--font-size-xl);
  color: hsl(var(--text-primary));
  margin-bottom: var(--space-8);
  text-align: center;
  position: relative;
}

.education h3::after {
  content: '';
  position: absolute;
  bottom: -var(--space-2);
  left: 50%;
  transform: translateX(-50%);
  width: 60px;
  height: 3px;
  background: linear-gradient(135deg, hsl(var(--text-muted)), hsl(var(--border)));
  border-radius: var(--radius-full);
}

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

.education-timeline::before {
  content: '';
  position: absolute;
  left: 50%;
  top: 0;
  bottom: 0;
  width: 2px;
  background: linear-gradient(180deg, hsl(var(--border)), transparent);
  transform: translateX(-50%);
}

.education-item {
  position: relative;
  margin-bottom: var(--space-12);
  width: 50%;
}

.education-item:nth-child(even) {
  left: 50%;
  padding-left: var(--space-8);
}

.education-item:nth-child(odd) {
  padding-right: var(--space-8);
}

.education-marker {
  position: absolute;
  width: 12px;
  height: 12px;
  background: hsl(var(--surface));
  border: 3px solid hsl(var(--border));
  border-radius: var(--radius-full);
  top: var(--space-4);
}

.education-item:nth-child(even) .education-marker {
  left: -var(--space-4);
}

.education-item:nth-child(odd) .education-marker {
  right: -var(--space-4);
}

.education-content {
  background: hsl(var(--surface));
  padding: var(--space-6);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  border: 1px solid hsl(var(--border));
  transition: all var(--transition-fast);
}

.education-content:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.education-content h4 {
  font-size: var(--font-size-base);
  color: hsl(var(--text-primary));
  margin-bottom: var(--space-1);
  font-weight: var(--font-weight-medium);
}

.education-content h5 {
  font-size: var(--font-size-sm);
  color: hsl(var(--text-muted));
  margin-bottom: var(--space-3);
  font-weight: var(--font-weight-normal);
}

.education-date {
  font-size: var(--font-size-xs);
  color: hsl(var(--text-muted));
  font-weight: var(--font-weight-medium);
  display: block;
  margin-bottom: var(--space-3);
}

.education-details {
  font-size: var(--font-size-sm);
  color: hsl(var(--text-secondary));
  line-height: 1.5;
}

.education-grade {
  font-size: var(--font-size-xs);
  color: hsl(var(--text-muted));
  font-style: italic;
  margin-top: var(--space-2);
}

/* Single item layout for when you have only one education entry */
.education-single .education-timeline::before {
  display: none;
}

.education-single .education-item {
  width: 100%;
  left: 0;
  padding: 0;
  text-align: center;
}

.education-single .education-marker {
  display: none;
}

/* Responsive Design */
@media (max-width: 768px) {
  .education-timeline::before {
    left: var(--space-4);
  }

  .education-item {
    width: 100%;
    left: 0 !important;
    padding-left: var(--space-12);
    padding-right: 0;
  }

  .education-marker {
    left: calc(var(--space-4) - 6px) !important;
  }
  
  /* For single item on mobile */
  .education-single .education-item {
    padding-left: 0;
  }
}
/* ==================== */
/* SKILLS SECTION - NOW COMES AFTER EXPERIENCE */
/* ==================== */
.skills {
  background-color: hsl(var(--surface));
}

.skills-content {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-12);
}

.skills-category h3 {
  font-size: var(--font-size-xl);
  margin-bottom: var(--space-6);
  color: hsl(var(--text-primary));
  text-align: center;
}

.skills-list {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  justify-content: center;
}

.skill-tag {
  padding: var(--space-2) var(--space-4);
  background-color: hsl(var(--surface));
  border: 1px solid hsl(var(--border));
  border-radius: var(--radius-full);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  color: hsl(var(--text-primary));
  transition: all var(--transition-fast);
}

.skill-tag:hover {
  background: var(--gradient-primary);
  color: white;
  border-color: transparent;
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

@media (max-width: 768px) {
  .skills-content {
    grid-template-columns: 1fr;
    gap: var(--space-8);
  }
}

/* Projects Section */
.projects {
  background-color: hsl(var(--surface));
}

.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: var(--space-8);
  margin-bottom: var(--space-12);
}

.project-card {
  background-color: hsl(var(--background));
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  transition: all var(--transition);
  border: 1px solid hsl(var(--border));
}

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

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

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

.project-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.8);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: opacity var(--transition);
}

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

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

.project-links {
  display: flex;
  gap: var(--space-4);
}

.project-link {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  background-color: hsl(var(--surface));
  border-radius: var(--radius-full);
  color: hsl(var(--text-primary));
  transition: all var(--transition-fast);
}

.project-link:hover {
  background: var(--gradient-primary);
  color: white;
  transform: scale(1.1);
}

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

.project-content h3 {
  font-size: var(--font-size-xl);
  margin-bottom: var(--space-3);
  color: hsl(var(--text-primary));
}

.project-content p {
  font-size: var(--font-size-sm);
  color: hsl(var(--text-secondary));
  margin-bottom: var(--space-4);
  line-height: 1.6;
}

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

.tech-tag {
  padding: var(--space-1) var(--space-3);
  background: var(--gradient-primary);
  color: white;
  border-radius: var(--radius-full);
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-medium);
}

.projects-cta {
  text-align: center;
}

@media (max-width: 768px) {
  .projects-grid {
    grid-template-columns: 1fr;
  }
}

/* Certifications Section */
.certifications {
  padding: var(--space-20) 0;
  background-color: hsl(var(--surface));
}

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

.certifications .section-title {
  font-size: var(--font-size-3xl);
  font-weight: var(--font-weight-bold);
  margin-bottom: var(--space-4);
  color: hsl(var(--text-primary));
}

.certifications .section-subtitle {
  font-size: var(--font-size-lg);
  color: hsl(var(--text-secondary));
  max-width: 600px;
  margin: 0 auto var(--space-12);
}

.certifications-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-8);
  max-width: 1200px;
  margin: 0 auto;
}

.certification-card {
  background-color: hsl(var(--background));
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  border: 1px solid hsl(var(--border));
  box-shadow: var(--shadow-md);
  transition: all var(--transition);
  display: flex;
  flex-direction: column;
}

.certification-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: hsl(var(--primary-color));
}

.certification-content h3 {
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-semibold);
  color: hsl(var(--text-primary));
  margin-bottom: var(--space-2);
  line-height: 1.3;
}

.certification-content h4 {
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-medium);
  color: hsl(var(--primary-color));
  margin-bottom: var(--space-3);
}

.certification-date {
  display: inline-block;
  font-size: var(--font-size-sm);
  color: hsl(var(--text-muted));
  background-color: hsl(var(--surface));
  padding: var(--space-1) var(--space-3);
  border-radius: var(--radius-full);
  margin-bottom: var(--space-4);
}

.certification-skills {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin-bottom: var(--space-4);
}

.skill-badge {
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-medium);
  padding: var(--space-1) var(--space-3);
  background-color: hsla(var(--primary-color), 0.1);
  color: hsl(var(--primary-color));
  border-radius: var(--radius-full);
  border: 1px solid hsla(var(--primary-color), 0.3);
  transition: all var(--transition-fast);
}

.skill-badge:hover {
  background-color: hsla(var(--primary-color), 0.2);
  transform: translateY(-1px);
}

.certification-credential {
  display: inline-flex;
  margin-top: var(--space-4);
  transition: transform var(--transition-fast);
}

.certification-credential img {
  border-radius: var(--radius);
  border: 1px solid hsl(var(--border));
  transition: all var(--transition-fast);
  max-width: 100%;
  height: auto;
}

.certification-credential:hover {
  transform: translateY(-2px);
}

.certification-credential:hover img {
  box-shadow: var(--shadow-md);
  border-color: hsl(var(--primary-color));
}

@media (max-width: 768px) {
  .certifications-grid {
    grid-template-columns: 1fr;
  }

  .certification-content h3 {
    font-size: var(--font-size-lg);
  }
}

/* Contact Section */
.contact {
  background-color: hsl(var(--surface));
}

.contact-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-16);
  align-items: start;
}

.contact-info h3 {
  font-size: var(--font-size-2xl);
  margin-bottom: var(--space-6);
  color: hsl(var(--text-primary));
}

.contact-methods {
  margin: var(--space-8) 0;
}

.contact-method {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  margin-bottom: var(--space-6);
}

.contact-method i {
  font-size: var(--font-size-xl);
  color: hsl(var(--primary-color));
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: hsl(var(--background));
  border-radius: var(--radius-lg);
  border: 1px solid hsl(var(--border));
}

.contact-method h4 {
  font-size: var(--font-size-base);
  margin-bottom: var(--space-1);
  color: hsl(var(--text-primary));
}

.contact-method p {
  font-size: var(--font-size-sm);
  color: hsl(var(--text-secondary));
  margin: 0;
}

.social-links {
  display: flex;
  gap: var(--space-4);
}

.social-links a {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  background: var(--gradient-primary);
  color: white;
  border-radius: var(--radius-lg);
  transition: all var(--transition-fast);
  box-shadow: var(--shadow-md);
}

.social-links a:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.contact-form {
  background-color: hsl(var(--background));
  padding: var(--space-8);
  border-radius: var(--radius-xl);
  border: 1px solid hsl(var(--border));
  box-shadow: var(--shadow-md);
}

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

.form-group label {
  display: block;
  margin-bottom: var(--space-2);
  font-weight: var(--font-weight-medium);
  color: hsl(var(--text-primary));
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: var(--space-4);
  border: 1px solid hsl(var(--border));
  border-radius: var(--radius-md);
  font-size: var(--font-size-base);
  font-family: var(--font-family);
  background-color: hsl(var(--surface));
  color: hsl(var(--text-primary));
  transition: border-color var(--transition-fast);
}

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

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

.form-status {
  margin-top: var(--space-4);
  padding: var(--space-4);
  border-radius: var(--radius-md);
  font-weight: var(--font-weight-medium);
  text-align: center;
  display: none;
}

.form-status.success {
  background-color: hsla(var(--accent-color), 0.1);
  color: hsl(var(--accent-color));
  border: 1px solid hsla(var(--accent-color), 0.3);
}

.form-status.error {
  background-color: hsla(0, 84%, 60%, 0.1);
  color: hsl(0, 84%, 60%);
  border: 1px solid hsla(0, 84%, 60%, 0.3);
}

@media (max-width: 768px) {
  .contact-content {
    grid-template-columns: 1fr;
    gap: var(--space-8);
  }

  .contact-form {
    padding: var(--space-6);
  }
}

/* Footer */
.footer {
    background-color: #111;
    color: #fff;
    padding: 1.5rem 0;
    text-align: center;
}

.footer-content p {
  margin-bottom: var(--space-2);
  color: hsl(var(--text-muted));
  font-size: var(--font-size-sm);
}

.footer-content p:last-child {
  margin-bottom: 0;
}

/* Back to Top Button */
.back-to-top {
  position: fixed;
  bottom: var(--space-6);
  right: var(--space-6);
  width: 48px;
  height: 48px;
  background: var(--gradient-primary);
  color: white;
  border: none;
  border-radius: var(--radius-full);
  cursor: pointer;
  box-shadow: var(--shadow-lg);
  transition: all var(--transition-fast);
  z-index: var(--z-fixed);
  opacity: 0;
  visibility: hidden;
  transform: translateY(100px);
}

.back-to-top.visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.back-to-top:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-xl);
}

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

.fade-in-up {
  animation: fadeInUp 0.6s ease-out forwards;
}

/* Loading States */
.loading {
  position: relative;
  pointer-events: none;
}

.loading::after {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 20px;
  height: 20px;
  margin: -10px 0 0 -10px;
  border: 2px solid transparent;
  border-top: 2px solid currentColor;
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

@keyframes spin {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

/* Accessibility */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  
  html {
    scroll-behavior: auto;
  }
}

/* Focus styles for better accessibility */
a:focus,
button:focus,
input:focus,
textarea:focus {
  outline: 2px solid hsl(var(--primary-color));
  outline-offset: 2px;
}

/* High contrast mode support */
@media (prefers-contrast: high) {
  :root {
    --border: 0 0% 0%;
    --shadow: none;
  }
}