/* CSS Variables for Theme Management */
:root {
  /* Light Theme Colors */
  --primary-color: #6366f1;
  --primary-dark: #4f46e5;
  --secondary-color: #f59e0b;
  --accent-color: #10b981;
  --text-primary: #1f2937;
  --text-secondary: #6b7280;
  --text-light: #9ca3af;
  --bg-primary: #ffffff;
  --bg-secondary: #f9fafb;
  --bg-tertiary: #f3f4f6;
  --border-color: #e5e7eb;
  --shadow-light: rgba(0, 0, 0, 0.1);
  --shadow-medium: rgba(0, 0, 0, 0.15);
  --shadow-heavy: rgba(0, 0, 0, 0.25);
  
  /* Dark Theme Colors */
  --dark-primary: #818cf8;
  --dark-primary-dark: #6366f1;
  --dark-secondary: #fbbf24;
  --dark-accent: #34d399;
  --dark-text-primary: #f9fafb;
  --dark-text-secondary: #d1d5db;
  --dark-text-light: #9ca3af;
  --dark-bg-primary: #111827;
  --dark-bg-secondary: #1f2937;
  --dark-bg-tertiary: #374151;
  --dark-border-color: #4b5563;
  --dark-shadow-light: rgba(0, 0, 0, 0.3);
  --dark-shadow-medium: rgba(0, 0, 0, 0.4);
  --dark-shadow-heavy: rgba(0, 0, 0, 0.6);
  
  /* 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;
  
  /* 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;
  --spacing-24: 6rem;
  
  /* Border Radius */
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  --radius-2xl: 1.5rem;
  
  /* Transitions */
  --transition-fast: 0.15s ease-in-out;
  --transition-normal: 0.3s ease-in-out;
  --transition-slow: 0.5s ease-in-out;
}

/* Dark Theme */
[data-theme="dark"] {
  --primary-color: var(--dark-primary);
  --primary-dark: var(--dark-primary-dark);
  --secondary-color: var(--dark-secondary);
  --accent-color: var(--dark-accent);
  --text-primary: var(--dark-text-primary);
  --text-secondary: var(--dark-text-secondary);
  --text-light: var(--dark-text-light);
  --bg-primary: var(--dark-bg-primary);
  --bg-secondary: var(--dark-bg-secondary);
  --bg-tertiary: var(--dark-bg-tertiary);
  --border-color: var(--dark-border-color);
  --shadow-light: var(--dark-shadow-light);
  --shadow-medium: var(--dark-shadow-medium);
  --shadow-heavy: var(--dark-shadow-heavy);
}

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

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

body {
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  line-height: 1.6;
  color: var(--text-primary);
  background-color: var(--bg-primary);
  transition: background-color var(--transition-normal), color var(--transition-normal);
  overflow-x: hidden;
  -webkit-tap-highlight-color: transparent;
}

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

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

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);
}

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

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

/* Better tap/keyboard states */
.social-link:active,
.project-link:active,
.btn:active {
  transform: translateY(1px) scale(0.99);
}

.social-link:focus-visible,
.project-link:focus-visible,
.btn:focus-visible,
.nav-link:focus-visible {
  outline: 2px solid var(--secondary-color);
  outline-offset: 3px;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-3) var(--spacing-6);
  font-size: var(--font-size-base);
  font-weight: 500;
  text-decoration: none;
  border: none;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-fast);
  position: relative;
  overflow: hidden;
  min-height: 44px;
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
  color: white;
  box-shadow: 0 4px 14px 0 var(--shadow-light);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 25px 0 var(--shadow-medium);
}

.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);
}

/* Navigation */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border-color);
  z-index: 1000;
  transition: all var(--transition-normal);
}

[data-theme="dark"] .navbar {
  background: rgba(17, 24, 39, 0.95);
}

.navbar.scrolled {
  background: rgba(255, 255, 255, 0.98);
  box-shadow: 0 2px 20px var(--shadow-light);
}

[data-theme="dark"] .navbar.scrolled {
  background: rgba(17, 24, 39, 0.98);
}

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

.nav-logo a {
  font-size: var(--font-size-xl);
  font-weight: 700;
  color: var(--text-primary);
  text-decoration: none;
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: var(--spacing-8);
}

.nav-link {
  font-weight: 500;
  color: var(--text-secondary);
  text-decoration: none;
  position: relative;
  transition: color var(--transition-fast);
  padding: 8px 4px;
}

.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: width var(--transition-fast);
}

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

.nav-toggle {
  display: none;
  flex-direction: column;
  cursor: pointer;
}

.bar {
  width: 25px;
  height: 3px;
  background: var(--text-primary);
  margin: 3px 0;
  transition: var(--transition-fast);
}

.theme-toggle {
  margin-left: var(--spacing-4);
}

.theme-btn {
  background: none;
  border: none;
  font-size: var(--font-size-lg);
  color: var(--text-primary);
  cursor: pointer;
  padding: var(--spacing-2);
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
}

.theme-btn:hover {
  background: var(--bg-secondary);
}

/* Hero Section */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  background: linear-gradient(135deg, var(--bg-primary) 0%, var(--bg-secondary) 100%);
  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="grain" width="100" height="100" patternUnits="userSpaceOnUse"><circle cx="50" cy="50" r="1" fill="%236366f1" opacity="0.1"/></pattern></defs><rect width="100" height="100" fill="url(%23grain)"/></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-4);
  animation: fadeInUp 1s ease-out;
}

.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-2xl);
  color: var(--text-secondary);
  margin-bottom: var(--spacing-6);
  animation: fadeInUp 1s ease-out 0.2s both;
}

.hero-description {
  font-size: var(--font-size-lg);
  color: var(--text-secondary);
  margin-bottom: var(--spacing-8);
  animation: fadeInUp 1s ease-out 0.4s both;
}

.hero-buttons {
  display: flex;
  gap: var(--spacing-4);
  animation: fadeInUp 1s ease-out 0.6s both;
}

.hero-image {
  display: flex;
  justify-content: center;
  align-items: center;
  animation: fadeInRight 1s ease-out 0.8s both;
}

.profile-container {
  width: 300px;
  height: 300px;
  border-radius: 50%;
  overflow: hidden;
  position: relative;
  box-shadow: 0 20px 40px var(--shadow-medium);
  border: 4px solid rgba(255, 255, 255, 0.6);
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
}

.profile-photo {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  border-radius: 50%;
  transition: transform var(--transition-normal);
}

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

/* Fallback for when image fails to load */
.profile-container::before {
  content: '\f007';
  font-family: 'Font Awesome 6 Free';
  font-weight: 900;
  font-size: 6rem;
  color: white;
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  z-index: -1;
  opacity: 0.3;
}

/* When image loads successfully, hide the fallback */
.profile-photo:not([src="https://drive.google.com/thumbnail?id=1gd96Hia3x-5wHjozSdtR0rEgDR0vxOpr&sz=w1000"]) ~ * {
  display: none;
}

/* Alternative approach - show fallback icon when image fails */
.profile-container i {
  font-size: 6rem;
  color: white;
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  z-index: 1;
  opacity: 0.8;
}

@media (max-width: 768px) {
  .profile-container {
    width: 200px;
    height: 200px;
  }
  
  .profile-container::before {
    font-size: 4rem;
  }
}

/* Section Styles */
section {
  padding: var(--spacing-24) 0;
}

.section-title {
  text-align: center;
  font-size: var(--font-size-4xl);
  font-weight: 700;
  margin-bottom: var(--spacing-16);
  position: relative;
}

.section-title::after {
  content: '';
  position: absolute;
  bottom: -10px;
  left: 50%;
  transform: translateX(-50%);
  width: 60px;
  height: 4px;
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  border-radius: 2px;
}

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

.about-content {
  max-width: 800px;
  margin: 0 auto;
  text-align: 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-8);
  margin-top: var(--spacing-12);
}

.stat {
  text-align: center;
}

.stat h3 {
  font-size: var(--font-size-4xl);
  font-weight: 700;
  color: var(--primary-color);
  margin-bottom: var(--spacing-2);
}

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

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

.project-card {
  background: var(--bg-primary);
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: 0 4px 20px var(--shadow-light);
  transition: all var(--transition-normal);
  border: 1px solid var(--border-color);
}

.project-card:hover {
  transform: translateY(-10px);
  box-shadow: 0 20px 40px var(--shadow-medium);
}

.project-image {
  height: 200px;
  background: var(--bg-tertiary);
  display: flex;
  align-items: center;
  justify-content: center;
}

.project-placeholder {
  font-size: 3rem;
  color: var(--text-light);
}

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

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

.project-content p {
  color: var(--text-secondary);
  margin-bottom: var(--spacing-4);
  font-size: var(--font-size-sm);
}

.project-tech {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-2);
  margin-bottom: var(--spacing-4);
}

.project-tech span {
  background: var(--bg-secondary);
  color: var(--text-secondary);
  padding: var(--spacing-1) var(--spacing-3);
  border-radius: var(--radius-sm);
  font-size: var(--font-size-xs);
  font-weight: 500;
}

.project-links {
  display: flex;
  gap: var(--spacing-3);
}

.project-link {
  width: 40px;
  height: 40px;
  background: var(--primary-color);
  color: white;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-fast);
}

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

/* Resume Section */
.resume {
  background: var(--bg-secondary);
}

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

.resume-sections {
  display: grid;
  gap: var(--spacing-12);
}

.resume-section h3 {
  color: var(--primary-color);
  border-bottom: 2px solid var(--border-color);
  padding-bottom: var(--spacing-2);
  margin-bottom: var(--spacing-6);
}

.resume-item {
  background: var(--bg-primary);
  padding: var(--spacing-6);
  border-radius: var(--radius-lg);
  margin-bottom: var(--spacing-4);
  box-shadow: 0 2px 10px var(--shadow-light);
  border-left: 4px solid var(--primary-color);
}

.resume-item h4 {
  color: var(--text-primary);
  margin-bottom: var(--spacing-2);
}

.institution,
.company {
  color: var(--primary-color);
  font-weight: 600;
  margin-bottom: var(--spacing-1);
}

.duration {
  color: var(--text-light);
  font-size: var(--font-size-sm);
  margin-bottom: var(--spacing-3);
}

.resume-item ul {
  margin-left: var(--spacing-4);
}

.resume-item li {
  color: var(--text-secondary);
  margin-bottom: var(--spacing-1);
}

/* Skills Section */
.skills-content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--spacing-12);
}

.skills-category h3 {
  color: var(--primary-color);
  margin-bottom: var(--spacing-6);
  text-align: center;
}

.skill-item {
  margin-bottom: var(--spacing-6);
}

.skill-name {
  display: block;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: var(--spacing-2);
}

.skill-bar {
  height: 8px;
  background: var(--bg-tertiary);
  border-radius: var(--radius-sm);
  overflow: hidden;
}

.skill-progress {
  height: 100%;
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  border-radius: var(--radius-sm);
  transition: width 2s ease-in-out;
  width: 0;
}

/* Testimonials Section */
.testimonials {
  background: var(--bg-secondary);
}

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

.testimonial-card {
  background: var(--bg-primary);
  padding: var(--spacing-8);
  border-radius: var(--radius-xl);
  text-align: center;
  box-shadow: 0 4px 20px var(--shadow-light);
  display: none;
}

.testimonial-card.active {
  display: block;
  animation: fadeIn 0.5s ease-in-out;
}

.testimonial-content p {
  font-size: var(--font-size-lg);
  font-style: italic;
  color: var(--text-secondary);
  margin-bottom: var(--spacing-6);
  line-height: 1.8;
}

.testimonial-author {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-4);
}

.author-info h4 {
  color: var(--text-primary);
  margin-bottom: var(--spacing-1);
}

.author-info p {
  color: var(--text-light);
  font-size: var(--font-size-sm);
  margin: 0;
}

.testimonial-nav {
  display: flex;
  justify-content: center;
  gap: var(--spacing-4);
  margin-top: var(--spacing-8);
}

.testimonial-prev,
.testimonial-next {
  width: 50px;
  height: 50px;
  background: var(--primary-color);
  color: white;
  border: none;
  border-radius: 50%;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-fast);
}

.testimonial-prev:hover,
.testimonial-next:hover {
  background: var(--primary-dark);
  transform: scale(1.1);
}

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

.blog-card {
  background: var(--bg-primary);
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: 0 4px 20px var(--shadow-light);
  transition: all var(--transition-normal);
  border: 1px solid var(--border-color);
}

.blog-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 10px 30px var(--shadow-medium);
}

.blog-image {
  height: 200px;
  background: var(--bg-tertiary);
  display: flex;
  align-items: center;
  justify-content: center;
}

.blog-placeholder {
  font-size: 3rem;
  color: var(--text-light);
}

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

.blog-meta {
  display: flex;
  gap: var(--spacing-4);
  margin-bottom: var(--spacing-3);
}

.blog-date,
.blog-category {
  font-size: var(--font-size-sm);
  color: var(--text-light);
}

.blog-category {
  background: var(--primary-color);
  color: white;
  padding: var(--spacing-1) var(--spacing-3);
  border-radius: var(--radius-sm);
}

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

.blog-excerpt {
  color: var(--text-secondary);
  margin-bottom: var(--spacing-4);
  font-size: var(--font-size-sm);
}

.blog-link {
  color: var(--primary-color);
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-2);
  transition: all var(--transition-fast);
}

.blog-link:hover {
  gap: var(--spacing-3);
}

/* Contact Section */
.contact {
  background: var(--bg-secondary);
}

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

.contact-info h3 {
  color: var(--text-primary);
  margin-bottom: var(--spacing-4);
}

.contact-info p {
  color: var(--text-secondary);
  margin-bottom: var(--spacing-8);
}

.contact-details {
  margin-bottom: var(--spacing-8);
}

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

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

.contact-item h4 {
  color: var(--text-primary);
  margin-bottom: var(--spacing-1);
}

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

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

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

.social-link {
  width: 50px;
  height: 50px;
  background: var(--bg-primary);
  color: var(--text-primary);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--font-size-lg);
  transition: all var(--transition-fast);
  border: 1px solid var(--border-color);
}

.social-link:hover {
  background: var(--primary-color);
  color: white;
  transform: translateY(-3px);
}

/* Contact Form */
.contact-form {
  background: var(--bg-primary);
  padding: var(--spacing-8);
  border-radius: var(--radius-xl);
  box-shadow: 0 4px 20px var(--shadow-light);
}

.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-md);
  font-size: var(--font-size-base);
  font-family: var(--font-family);
  background: var(--bg-primary);
  color: var(--text-primary);
  transition: all var(--transition-fast);
}

.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(--text-primary);
  color: var(--bg-primary);
  padding: var(--spacing-8) 0;
  text-align: center;
}

.footer-content p {
  margin: 0;
  color: var(--bg-primary);
}

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

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

@keyframes fadeIn {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

/* Scroll Animations */
.fade-in {
  opacity: 0;
  transform: translateY(30px);
  transition: all 0.6s ease-out;
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* Responsive Design */
@media (max-width: 768px) {
  .nav-menu {
    position: fixed;
    top: 70px;
    left: -100%;
    width: 100%;
    height: calc(100vh - 70px);
    background: var(--bg-primary);
    flex-direction: column;
    justify-content: start;
    align-items: center;
    padding-top: var(--spacing-8);
    transition: left var(--transition-normal);
    box-shadow: 0 4px 20px var(--shadow-light);
  }

  .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-content {
    grid-template-columns: 1fr;
    text-align: center;
    gap: var(--spacing-8);
  }

  .hero-title {
    font-size: var(--font-size-4xl);
  }

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

  .hero-buttons {
    justify-content: center;
    flex-wrap: wrap;
  }

  .profile-placeholder {
    width: 200px;
    height: 200px;
    font-size: 4rem;
  }

  .about-stats {
    grid-template-columns: 1fr;
    gap: var(--spacing-6);
  }

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

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

  .contact-content {
    grid-template-columns: 1fr;
    gap: var(--spacing-8);
  }

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

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

  .hero-title {
    font-size: var(--font-size-3xl);
  }
  .social-link,
  .project-link,
  .testimonial-prev,
  .testimonial-next {
    width: 56px;
    height: 56px;
  }
  .nav-link { padding: 10px 6px; }
  .btn { min-height: 48px; }
}

@media (max-width: 480px) {
  .container {
    padding: 0 var(--spacing-3);
  }

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

  .btn {
    width: 100%;
    max-width: 300px;
  }

  .project-card,
  .blog-card {
    margin: 0 var(--spacing-2);
  }

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

/* Print Styles */
@media print {
  .navbar,
  .theme-toggle,
  .hero-buttons,
  .contact-form,
  .footer {
    display: none;
  }

  body {
    font-size: 12pt;
    line-height: 1.4;
  }

  .section-title {
    page-break-after: avoid;
  }

  .project-card,
  .blog-card {
    page-break-inside: avoid;
  }
}

/* Accessibility */
@media (prefers-reduced-motion: reduce) {
  * {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

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

/* High contrast mode support */
@media (prefers-contrast: high) {
  :root {
    --text-primary: #000000;
    --text-secondary: #333333;
    --bg-primary: #ffffff;
    --bg-secondary: #f0f0f0;
    --border-color: #000000;
  }

  [data-theme="dark"] {
    --text-primary: #ffffff;
    --text-secondary: #cccccc;
    --bg-primary: #000000;
    --bg-secondary: #111111;
    --border-color: #ffffff;
  }
}

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

.error-message {
  color: #ef4444;
  font-size: var(--font-size-sm);
  margin-top: var(--spacing-1);
  display: none;
}

.error-message.show {
  display: block;
}

.submit-status {
  margin-top: var(--spacing-3);
  font-size: var(--font-size-sm);
  font-weight: 500;
}

/* Skip to content link */
.skip-link {
  position: absolute;
  top: -40px;
  left: 6px;
  background: var(--primary-color);
  color: white;
  padding: 8px;
  text-decoration: none;
  border-radius: 4px;
  z-index: 10000;
  transition: top var(--transition-fast);
}

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

/* Focus indicators */
*:focus {
  outline: 2px solid var(--primary-color);
  outline-offset: 2px;
}

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

/* Print styles for accessibility */
@media print {
  .navbar,
  .theme-toggle,
  .hero-buttons,
  .contact-form,
  .footer,
  .social-links {
    display: none;
  }
  
  body {
    font-size: 12pt;
    line-height: 1.4;
    color: #000;
    background: #fff;
  }
  
  .section-title {
    page-break-after: avoid;
  }
  
  .project-card,
  .blog-card {
    page-break-inside: avoid;
  }
  
  a[href]:after {
    content: " (" attr(href) ")";
  }
}

#scrollToTopBtn {
  display: none;
  position: fixed;
  bottom: 10px; 
  right: 10px; 
  background-color: #6366f1; 
  color: rgb(255, 255, 255); 
  cursor: pointer; 
  padding: 15px;
  border-radius: 25px; 
  font-size: 22px; 
}