/* CSS Variables for Theming */
:root {
  /* Primary Colors */
  --primary-50: #eff6ff;
  --primary-100: #dbeafe;
  --primary-200: #bfdbfe;
  --primary-300: #93c5fd;
  --primary-400: #60a5fa;
  --primary-500: #3b82f6;
  --primary-600: #2563eb;
  --primary-700: #1d4ed8;
  --primary-800: #1e40af;
  --primary-900: #1e3a8a;

  /* Accent Colors */
  --accent-pink: #ec4899;
  --accent-purple: #8b5cf6;
  --accent-cyan: #06b6d4;
  --accent-orange: #f97316;
  --accent-green: #10b981;

  /* Gradients */
  --gradient-primary: linear-gradient(135deg, var(--primary-500), var(--accent-purple));
  --gradient-secondary: linear-gradient(135deg, var(--accent-pink), var(--accent-cyan));
  --gradient-accent: linear-gradient(135deg, var(--accent-orange), var(--accent-pink));

  /* Light Theme */
  --bg-primary: #ffffff;
  --bg-secondary: #f8fafc;
  --bg-tertiary: #f1f5f9;
  --text-primary: #0f172a;
  --text-secondary: #475569;
  --text-tertiary: #64748b;
  --border-color: #e2e8f0;
  --shadow-light: 0 1px 3px 0 rgba(0, 0, 0, 0.1);
  --shadow-medium: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
  --shadow-large: 0 10px 15px -3px rgba(0, 0, 0, 0.1);

  /* Typography */
  --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', 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-size-6xl: 3.75rem;

  /* Spacing */
  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-2xl: 2.5rem;
  --space-3xl: 3rem;
  --space-4xl: 4rem;
  --space-5xl: 5rem;

  /* Transitions */
  --transition-fast: 0.15s ease-out;
  --transition-normal: 0.3s ease-out;
  --transition-slow: 0.5s ease-out;
}

/* Dark Theme (Default) */
[data-theme="dark"] {
  --bg-primary: #0f172a;
  --bg-secondary: #1e293b;
  --bg-tertiary: #334155;
  --text-primary: #f1f5f9;
  --text-secondary: #cbd5e1;
  --text-tertiary: #94a3b8;
  --border-color: #334155;
  --shadow-light: 0 1px 3px 0 rgba(0, 0, 0, 0.3);
  --shadow-medium: 0 4px 6px -1px rgba(0, 0, 0, 0.3);
  --shadow-large: 0 10px 15px -3px rgba(0, 0, 0, 0.3);
}

/* Light Theme */
[data-theme="light"] {
  --bg-primary: #ffffff;
  --bg-secondary: #f8fafc;
  --bg-tertiary: #f1f5f9;
  --text-primary: #1e293b;
  --text-secondary: #475569;
  --text-tertiary: #64748b;
  --border-color: #e2e8f0;
  --shadow-light: 0 1px 3px 0 rgba(0, 0, 0, 0.1);
  --shadow-medium: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
  --shadow-large: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
}

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

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

body {
  font-family: var(--font-family);
  line-height: 1.6;
  color: var(--text-primary);
  background-color: var(--bg-primary);
  transition: background-color var(--transition-normal), color var(--transition-normal);
}

/* Typography */
.heading-xl {
  font-size: clamp(2.5rem, 5vw, 3.5rem);
  font-weight: 800;
  line-height: 1.1;
}

.heading-lg {
  font-size: clamp(2rem, 4vw, 2.5rem);
  font-weight: 700;
  line-height: 1.2;
}

.heading-md {
  font-size: clamp(1.5rem, 3vw, 2rem);
  font-weight: 600;
  line-height: 1.3;
}

.heading-sm {
  font-size: clamp(1.25rem, 2.5vw, 1.5rem);
  font-weight: 600;
  line-height: 1.4;
}

.body-lg {
  font-size: 1.125rem;
  line-height: 1.75;
}

.body-md {
  font-size: 1rem;
  line-height: 1.625;
}

.body-sm {
  font-size: 0.875rem;
  line-height: 1.5;
}

/* Gradient Text */
.gradient-text {
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  font-weight: 700;
}

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

.section {
  padding: var(--space-5xl) 0;
}

.section-title {
  font-size: clamp(2rem, 4vw, 2.5rem);
  font-weight: 700;
  text-align: center;
  margin-bottom: var(--space-md);
}

.section-subtitle {
  font-size: var(--font-size-lg);
  color: var(--text-secondary);
  text-align: center;
  margin-bottom: var(--space-4xl);
}

.section-header {
  text-align: center;
  margin-bottom: var(--space-4xl);
}

.section-cta {
  text-align: center;
  margin-top: var(--space-4xl);
}

/* Navigation */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  background: rgba(15, 23, 42, 0.9);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border-color);
  z-index: 1000;
  transition: all var(--transition-normal);
}

[data-theme="light"] .nav {
  background: rgba(255, 255, 255, 0.9);
}

.nav-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-lg);
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 80px;
}

.nav-brand {
  text-decoration: none;
}

.brand-link {
  text-decoration: none;
  font-size: var(--font-size-2xl);
  font-weight: 800;
  color: var(--text-primary);
}

.brand-text {
  color: var(--text-primary);
}

.brand-accent {
  color: var(--primary-500);
}

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

.nav-link {
  text-decoration: none;
  color: var(--text-secondary);
  font-weight: 500;
  padding: var(--space-sm) 0;
  transition: color var(--transition-fast);
  position: relative;
}

.nav-link:hover,
.nav-link.active {
  color: var(--primary-500);
}

.nav-link.active::after {
  content: '';
  position: absolute;
  bottom: -8px;
  left: 50%;
  transform: translateX(-50%);
  width: 20px;
  height: 2px;
  background: var(--gradient-primary);
  border-radius: 1px;
}

.theme-toggle {
  background: none;
  border: 2px solid var(--border-color);
  border-radius: 50px;
  padding: var(--space-sm);
  cursor: pointer;
  transition: all var(--transition-fast);
  width: 50px;
  height: 30px;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
}

.theme-toggle:hover {
  border-color: var(--primary-500);
  transform: scale(1.05);
}

.theme-icon {
  font-size: var(--font-size-sm);
  transition: opacity var(--transition-fast);
  position: absolute;
}

[data-theme="light"] .moon-icon,
[data-theme="dark"] .sun-icon {
  opacity: 0;
}

[data-theme="light"] .sun-icon,
[data-theme="dark"] .moon-icon {
  opacity: 1;
}

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

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

.nav-hamburger.active span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

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

.nav-hamburger.active span:nth-child(3) {
  transform: rotate(-45deg) translate(7px, -6px);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-md) var(--space-xl);
  border-radius: 50px;
  font-weight: 600;
  font-size: var(--font-size-base);
  text-decoration: none;
  transition: all var(--transition-fast);
  cursor: pointer;
  border: none;
  position: relative;
  overflow: hidden;
}

.btn::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 0;
  height: 0;
  background: rgba(255, 255, 255, 0.2);
  border-radius: 50%;
  transform: translate(-50%, -50%);
  transition: all var(--transition-normal);
}

.btn:hover::before {
  width: 300px;
  height: 300px;
}

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

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

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

.btn-secondary:hover {
  border-color: var(--primary-500);
  transform: translateY(-2px);
  color: var(--primary-500);
}

.btn-outline {
  background: transparent;
  color: var(--primary-500);
  border: 2px solid var(--primary-500);
}

.btn-outline:hover {
  background: var(--primary-500);
  color: white;
  transform: translateY(-2px);
}

/* Hero Section */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
  padding-top: 80px;
}

.hero-background {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: -1;
}

.hero-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-4xl);
  align-items: center;
  min-height: 60vh;
}

.hero-text {
  z-index: 2;
}

.hero-title {
  font-size: clamp(2.5rem, 5vw, 4rem);
  font-weight: 800;
  line-height: 1.1;
  margin-bottom: var(--space-lg);
}

.hero-subtitle {
  font-size: clamp(1.25rem, 3vw, 1.5rem);
  color: var(--text-secondary);
  margin-bottom: var(--space-lg);
  min-height: 2em;
  display: flex;
  align-items: center;
  gap: 0.25em;
}

.typewriter {
  color: var(--primary-500);
  font-weight: 600;
}

.cursor {
  color: var(--primary-500);
  animation: blink 1s infinite;
}

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

.hero-description {
  font-size: var(--font-size-lg);
  color: var(--text-secondary);
  line-height: 1.75;
  margin-bottom: var(--space-2xl);
  max-width: 500px;
}

.hero-actions {
  display: flex;
  gap: var(--space-lg);
  flex-wrap: wrap;
}

.hero-visual {
  display: flex;
  justify-content: center;
  align-items: center;
  position: relative;
  z-index: 1;
}

.hero-image {
  width: 300px;
  height: 300px;
  border-radius: 50%;
  background: var(--gradient-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  animation: float 6s ease-in-out infinite;
}

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

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

.floating-element {
  position: absolute;
  font-size: 2rem;
  animation: floatAround 8s linear infinite;
}

.floating-element:nth-child(1) {
  top: 10%;
  left: 10%;
  animation-delay: 0s;
}

.floating-element:nth-child(2) {
  top: 10%;
  right: 10%;
  animation-delay: 2s;
}

.floating-element:nth-child(3) {
  bottom: 10%;
  left: 10%;
  animation-delay: 4s;
}

.floating-element:nth-child(4) {
  bottom: 10%;
  right: 10%;
  animation-delay: 6s;
}

@keyframes floatAround {
  0%, 100% { transform: translateY(0px) rotate(0deg); }
  25% { transform: translateY(-10px) rotate(90deg); }
  50% { transform: translateY(-20px) rotate(180deg); }
  75% { transform: translateY(-10px) rotate(270deg); }
}

/* Skills Section */
.skills-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--space-xl);
}

.skill-category {
  background: var(--bg-secondary);
  padding: var(--space-xl);
  border-radius: 20px;
  border: 1px solid var(--border-color);
  transition: all var(--transition-normal);
  text-align: center;
}

.skill-category:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-large);
  border-color: var(--primary-500);
}

.skill-icon {
  font-size: 3rem;
  margin-bottom: var(--space-lg);
  display: block;
}

.skill-title {
  font-size: var(--font-size-xl);
  font-weight: 600;
  margin-bottom: var(--space-lg);
  color: var(--text-primary);
}

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

.skill-tag {
  background: var(--bg-tertiary);
  color: var(--text-secondary);
  padding: var(--space-xs) var(--space-md);
  border-radius: 20px;
  font-size: var(--font-size-sm);
  font-weight: 500;
  border: 1px solid var(--border-color);
  transition: all var(--transition-fast);
}

.skill-tag:hover {
  background: var(--primary-500);
  color: white;
  transform: scale(1.05);
}

/* Projects Section */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--space-xl);
}

.project-card {
  background: var(--bg-secondary);
  border-radius: 20px;
  overflow: hidden;
  transition: all var(--transition-normal);
  border: 1px solid var(--border-color);
}

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

.project-card.featured {
  grid-column: span 2;
}

.project-image {
  height: 200px;
  background: var(--gradient-primary);
  position: relative;
  overflow: hidden;
}

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

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

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

.project-link {
  background: var(--primary-500);
  color: white;
  padding: var(--space-sm) var(--space-lg);
  border-radius: 25px;
  text-decoration: none;
  font-weight: 500;
  transition: all var(--transition-fast);
}

.project-link:hover {
  background: var(--primary-600);
  transform: scale(1.05);
}

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

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

.tech-tag {
  background: var(--bg-tertiary);
  color: var(--text-secondary);
  padding: var(--space-xs) var(--space-md);
  border-radius: 15px;
  font-size: var(--font-size-sm);
  font-weight: 500;
  border: 1px solid var(--border-color);
}

.project-title {
  font-size: var(--font-size-xl);
  font-weight: 600;
  margin-bottom: var(--space-md);
  color: var(--text-primary);
}

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

/* Blog Section */
.blog-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--space-xl);
}

.blog-card {
  background: var(--bg-secondary);
  border-radius: 20px;
  padding: var(--space-xl);
  transition: all var(--transition-normal);
  border: 1px solid var(--border-color);
}

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

.blog-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--space-lg);
}

.blog-category {
  background: var(--primary-500);
  color: white;
  padding: var(--space-xs) var(--space-md);
  border-radius: 15px;
  font-size: var(--font-size-sm);
  font-weight: 500;
}

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

.blog-title {
  margin-bottom: var(--space-md);
}

.blog-title a {
  color: var(--text-primary);
  text-decoration: none;
  font-size: var(--font-size-xl);
  font-weight: 600;
  transition: color var(--transition-fast);
}

.blog-title a:hover {
  color: var(--primary-500);
}

.blog-excerpt {
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: var(--space-lg);
}

.blog-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.blog-reading-time {
  color: var(--text-tertiary);
  font-size: var(--font-size-sm);
}

.blog-link {
  color: var(--primary-500);
  text-decoration: none;
  font-weight: 500;
  transition: color var(--transition-fast);
}

.blog-link:hover {
  color: var(--primary-600);
}

/* CTA Section */
.cta-section {
  background: var(--bg-secondary);
  padding: var(--space-5xl) 0;
  text-align: center;
}

.cta-content {
  max-width: 600px;
  margin: 0 auto;
}

.cta-title {
  font-size: clamp(2rem, 4vw, 2.5rem);
  font-weight: 700;
  margin-bottom: var(--space-lg);
  color: var(--text-primary);
}

.cta-description {
  font-size: var(--font-size-lg);
  color: var(--text-secondary);
  line-height: 1.75;
  margin-bottom: var(--space-2xl);
}

.cta-actions {
  display: flex;
  gap: var(--space-lg);
  justify-content: center;
  flex-wrap: wrap;
}

/* Footer */
.footer {
  background: var(--bg-secondary);
  border-top: 1px solid var(--border-color);
  padding: var(--space-5xl) 0 var(--space-xl) 0;
}

.footer-content {
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: var(--space-4xl);
  margin-bottom: var(--space-4xl);
}

.footer-brand {
  max-width: 300px;
}

.footer-title {
  font-size: var(--font-size-2xl);
  font-weight: 700;
  margin-bottom: var(--space-lg);
  color: var(--text-primary);
}

.footer-description {
  color: var(--text-secondary);
  line-height: 1.6;
}

.footer-links {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: var(--space-2xl);
}

.footer-section-title {
  font-size: var(--font-size-lg);
  font-weight: 600;
  margin-bottom: var(--space-lg);
  color: var(--text-primary);
}

.footer-menu,
.footer-social {
  list-style: none;
}

.footer-menu li,
.footer-social li {
  margin-bottom: var(--space-sm);
}

.footer-menu a,
.footer-social a {
  color: var(--text-secondary);
  text-decoration: none;
  transition: color var(--transition-fast);
}

.footer-menu a:hover,
.footer-social a:hover {
  color: var(--primary-500);
}

.footer-bottom {
  text-align: center;
  padding-top: var(--space-xl);
  border-top: 1px solid var(--border-color);
}

.footer-copyright {
  color: var(--text-tertiary);
  font-size: var(--font-size-sm);
}

/* Responsive Design */
@media (max-width: 768px) {
  .nav-menu {
    position: fixed;
    top: 80px;
    left: 0;
    width: 100%;
    height: calc(100vh - 80px);
    background: var(--bg-primary);
    flex-direction: column;
    justify-content: flex-start;
    padding: var(--space-2xl);
    transform: translateX(-100%);
    transition: transform var(--transition-normal);
  }

  .nav-menu.active {
    transform: translateX(0);
  }

  .nav-hamburger {
    display: flex;
  }

  .hero-content {
    grid-template-columns: 1fr;
    text-align: center;
    gap: var(--space-2xl);
  }

  .hero-visual {
    order: -1;
  }

  .hero-image {
    width: 200px;
    height: 200px;
  }

  .hero-actions {
    justify-content: center;
  }

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

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

  .project-card.featured {
    grid-column: span 1;
  }

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

  .footer-content {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .footer-links {
    grid-template-columns: repeat(2, 1fr);
  }

  .cta-actions {
    flex-direction: column;
    align-items: center;
  }
}

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

  .section {
    padding: var(--space-3xl) 0;
  }

  .hero {
    min-height: 80vh;
  }

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

  .footer-links {
    grid-template-columns: 1fr;
  }
}

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

/* Focus styles */
a:focus,
button:focus {
  outline: 2px solid var(--primary-500);
  outline-offset: 2px;
}

/* About Page Specific Styles */
.about-story {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: var(--space-4xl);
  align-items: center;
  margin-bottom: var(--space-4xl);
}

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

.stat-item {
  text-align: center;
  padding: var(--space-xl);
  background: var(--bg-primary);
  border-radius: 20px;
  border: 1px solid var(--border-color);
  transition: all var(--transition-normal);
}

.stat-item:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-large);
}

.stat-number {
  font-size: 2.5rem;
  font-weight: 800;
  margin-bottom: var(--space-sm);
}

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

/* Skills Detailed */
.skills-detailed {
  display: grid;
  gap: var(--space-4xl);
}

.skills-progress {
  display: grid;
  gap: var(--space-lg);
}

.skill-item {
  background: var(--bg-primary);
  padding: var(--space-xl);
  border-radius: 15px;
  border: 1px solid var(--border-color);
  transition: all var(--transition-normal);
}

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

.skill-header {
  display: flex;
  justify-content: space-between;
  margin-bottom: var(--space-md);
  font-weight: 600;
  color: var(--text-primary);
}

.skill-bar {
  width: 100%;
  height: 8px;
  background: var(--bg-tertiary);
  border-radius: 4px;
  overflow: hidden;
}

.skill-fill {
  height: 100%;
  background: var(--gradient-primary);
  border-radius: 4px;
  transition: width 1s ease;
}

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

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

.timeline-item {
  position: relative;
  margin-bottom: var(--space-4xl);
  padding-left: 5rem;
}

.timeline-marker {
  position: absolute;
  left: 1.25rem;
  top: 0.5rem;
  width: 1.5rem;
  height: 1.5rem;
  background: var(--primary-500);
  border-radius: 50%;
  border: 3px solid var(--bg-primary);
  box-shadow: 0 0 0 4px var(--primary-500);
}

.timeline-content {
  background: var(--bg-secondary);
  padding: var(--space-2xl);
  border-radius: 20px;
  border: 1px solid var(--border-color);
  transition: all var(--transition-normal);
}

.timeline-content:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-large);
}

.timeline-title {
  font-size: var(--font-size-xl);
  font-weight: 600;
  margin-bottom: var(--space-xs);
  color: var(--text-primary);
}

.timeline-company {
  color: var(--primary-500);
  font-weight: 600;
  margin-bottom: var(--space-xs);
}

.timeline-date {
  color: var(--text-tertiary);
  font-size: var(--font-size-sm);
  font-weight: 500;
  margin-bottom: var(--space-md);
}

.timeline-description {
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: var(--space-lg);
}

.timeline-achievements {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
}

.achievement-tag {
  background: var(--bg-tertiary);
  color: var(--text-secondary);
  padding: var(--space-xs) var(--space-md);
  border-radius: 15px;
  font-size: var(--font-size-sm);
  font-weight: 500;
  border: 1px solid var(--border-color);
}

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

.interest-item {
  background: var(--bg-secondary);
  padding: var(--space-2xl);
  border-radius: 20px;
  border: 1px solid var(--border-color);
  text-align: center;
  transition: all var(--transition-normal);
}

.interest-item:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-large);
  border-color: var(--primary-500);
}

.interest-icon {
  font-size: 3rem;
  margin-bottom: var(--space-lg);
  display: block;
}

.interest-title {
  font-size: var(--font-size-xl);
  font-weight: 600;
  margin-bottom: var(--space-md);
  color: var(--text-primary);
}

.interest-description {
  color: var(--text-secondary);
  line-height: 1.6;
}

/* Projects Page Specific Styles */
.project-stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--space-xl);
  max-width: 800px;
  margin: 0 auto;
}

.project-filters {
  text-align: center;
  margin-bottom: var(--space-2xl);
}

.filter-title {
  font-size: var(--font-size-xl);
  font-weight: 600;
  margin-bottom: var(--space-lg);
  color: var(--text-primary);
}

.filter-buttons {
  display: flex;
  justify-content: center;
  gap: var(--space-md);
  flex-wrap: wrap;
}

.filter-btn {
  padding: var(--space-md) var(--space-xl);
  border: 2px solid var(--border-color);
  background: transparent;
  color: var(--text-secondary);
  border-radius: 25px;
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition-fast);
  font-size: var(--font-size-sm);
}

.filter-btn:hover,
.filter-btn.active {
  border-color: var(--primary-500);
  color: var(--primary-500);
  background: rgba(59, 130, 246, 0.1);
  transform: translateY(-2px);
}

.project-badge {
  position: absolute;
  top: var(--space-md);
  right: var(--space-md);
  background: var(--gradient-secondary);
  color: white;
  padding: var(--space-sm) var(--space-md);
  border-radius: 20px;
  font-size: var(--font-size-xs);
  font-weight: 600;
  z-index: 2;
}

.project-placeholder {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 3rem;
  color: rgba(255, 255, 255, 0.8);
}

.project-card.hidden {
  display: none !important;
}

/* Blog Page Specific Styles */
.blog-stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--space-xl);
  max-width: 800px;
  margin: 0 auto;
}

.blog-controls {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--space-xl);
  margin-bottom: var(--space-2xl);
}

.blog-search {
  position: relative;
  width: 300px;
}

.blog-search input {
  width: 100%;
  padding: var(--space-md) var(--space-md) var(--space-md) 3rem;
  border: 2px solid var(--border-color);
  border-radius: 25px;
  background: var(--bg-primary);
  color: var(--text-primary);
  font-size: var(--font-size-md);
  transition: all var(--transition-normal);
}

.blog-search input:focus {
  outline: none;
  border-color: var(--primary-500);
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

.blog-search i {
  position: absolute;
  left: var(--space-md);
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-secondary);
}

.blog-categories {
  display: flex;
  gap: var(--space-md);
  flex-wrap: wrap;
}

.category-btn {
  padding: var(--space-md) var(--space-xl);
  border: 2px solid var(--border-color);
  background: transparent;
  color: var(--text-secondary);
  border-radius: 25px;
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition-fast);
  font-size: var(--font-size-sm);
}

.category-btn:hover,
.category-btn.active {
  border-color: var(--primary-500);
  color: var(--primary-500);
  background: rgba(59, 130, 246, 0.1);
  transform: translateY(-2px);
}

.featured-article {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-4xl);
  background: var(--bg-secondary);
  border-radius: 20px;
  overflow: hidden;
  border: 1px solid var(--border-color);
  margin-bottom: var(--space-4xl);
  transition: all var(--transition-normal);
}

.featured-article:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-large);
}

.article-image {
  position: relative;
  background: var(--gradient-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 300px;
}

.article-placeholder {
  font-size: 4rem;
  color: white;
  opacity: 0.8;
}

.article-badge {
  position: absolute;
  top: var(--space-md);
  left: var(--space-md);
  background: var(--gradient-secondary);
  color: white;
  padding: var(--space-sm) var(--space-md);
  border-radius: 20px;
  font-size: var(--font-size-xs);
  font-weight: 600;
}

.article-content {
  padding: var(--space-2xl);
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.article-title {
  font-size: var(--font-size-2xl);
  font-weight: 700;
  margin-bottom: var(--space-md);
}

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

.article-title a:hover {
  color: var(--primary-500);
}

.article-excerpt {
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: var(--space-lg);
}

.blog-meta {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  margin-bottom: var(--space-md);
  flex-wrap: wrap;
}

.blog-category {
  padding: var(--space-xs) var(--space-md);
  border-radius: 15px;
  font-size: var(--font-size-xs);
  font-weight: 500;
  color: white;
  background: var(--gradient-accent);
}

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

.blog-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: auto;
}

.blog-reading-time {
  color: var(--text-secondary);
  font-size: var(--font-size-sm);
}

.blog-link {
  color: var(--primary-500);
  text-decoration: none;
  font-weight: 500;
  transition: all var(--transition-fast);
}

.blog-link:hover {
  color: var(--primary-600);
  transform: translateX(5px);
}

.blog-title {
  font-size: var(--font-size-xl);
  font-weight: 600;
  margin-bottom: var(--space-md);
}

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

.blog-title a:hover {
  color: var(--primary-500);
}

.blog-excerpt {
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: var(--space-lg);
}

.blog-card.hidden {
  display: none !important;
}

/* Newsletter Section */
.newsletter-section {
  background: var(--bg-secondary);
  padding: var(--space-4xl) 0;
}

.newsletter-content {
  text-align: center;
  max-width: 600px;
  margin: 0 auto;
}

.newsletter-title {
  font-size: var(--font-size-3xl);
  font-weight: 700;
  margin-bottom: var(--space-md);
  color: var(--text-primary);
}

.newsletter-description {
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: var(--space-2xl);
}

.newsletter-form {
  display: flex;
  gap: var(--space-md);
  margin-bottom: var(--space-md);
  max-width: 400px;
  margin-left: auto;
  margin-right: auto;
}

.newsletter-form input {
  flex: 1;
  padding: var(--space-md) var(--space-lg);
  border: 2px solid var(--border-color);
  border-radius: 10px;
  background: var(--bg-primary);
  color: var(--text-primary);
  font-size: var(--font-size-md);
  transition: all var(--transition-normal);
}

.newsletter-form input:focus {
  outline: none;
  border-color: var(--primary-500);
}

.newsletter-note {
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
}

/* Contact Page Specific Styles */
.contact-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-4xl);
  align-items: start;
}

.contact-title {
  font-size: var(--font-size-2xl);
  font-weight: 700;
  margin-bottom: var(--space-xl);
  color: var(--text-primary);
}

.contact-description {
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: var(--space-2xl);
}

.contact-form {
  background: var(--bg-secondary);
  padding: var(--space-2xl);
  border-radius: 20px;
  border: 1px solid var(--border-color);
}

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

.form-group label {
  display: block;
  margin-bottom: var(--space-sm);
  font-weight: 600;
  color: var(--text-primary);
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: var(--space-md) var(--space-lg);
  border: 2px solid var(--border-color);
  border-radius: 10px;
  background: var(--bg-primary);
  color: var(--text-primary);
  font-size: var(--font-size-md);
  font-family: inherit;
  transition: all var(--transition-normal);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--primary-500);
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

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

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

.checkbox-label {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  cursor: pointer;
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
}

.checkbox-label input[type="checkbox"] {
  width: auto;
  margin: 0;
}

.checkmark {
  width: 20px;
  height: 20px;
  border: 2px solid var(--border-color);
  border-radius: 4px;
  background: var(--bg-primary);
  position: relative;
  transition: all var(--transition-normal);
}

.checkbox-label input:checked + .checkmark {
  background: var(--primary-500);
  border-color: var(--primary-500);
}

.checkbox-label input:checked + .checkmark::after {
  content: '✓';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  color: white;
  font-weight: bold;
  font-size: 12px;
}

.btn-large {
  width: 100%;
  padding: var(--space-lg) var(--space-xl);
  font-size: var(--font-size-lg);
  margin-top: var(--space-md);
}

.contact-methods {
  margin-bottom: var(--space-2xl);
}

.contact-method {
  display: flex;
  align-items: flex-start;
  gap: var(--space-lg);
  margin-bottom: var(--space-xl);
  padding: var(--space-xl);
  background: var(--bg-secondary);
  border-radius: 15px;
  border: 1px solid var(--border-color);
  transition: all var(--transition-normal);
}

.contact-method:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-large);
}

.contact-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 3rem;
  height: 3rem;
  background: var(--gradient-primary);
  border-radius: 12px;
  color: white;
  font-size: var(--font-size-xl);
  flex-shrink: 0;
}

.contact-details h3 {
  font-size: var(--font-size-lg);
  font-weight: 600;
  margin-bottom: var(--space-xs);
  color: var(--text-primary);
}

.contact-details p {
  font-weight: 500;
  margin-bottom: var(--space-xs);
  color: var(--text-secondary);
}

.contact-link {
  color: var(--primary-500);
  text-decoration: none;
  font-weight: 500;
  transition: color var(--transition-fast);
}

.contact-link:hover {
  color: var(--primary-600);
}

.response-info h3 {
  font-size: var(--font-size-lg);
  font-weight: 600;
  margin-bottom: var(--space-md);
  color: var(--text-primary);
}

.response-stats {
  display: flex;
  gap: var(--space-xl);
}

.response-stat {
  text-align: center;
}

.response-number {
  display: block;
  font-size: var(--font-size-2xl);
  font-weight: 800;
  color: var(--primary-500);
  margin-bottom: var(--space-xs);
}

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

/* FAQ Grid */
.faq-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: var(--space-xl);
}

.faq-item {
  background: var(--bg-secondary);
  padding: var(--space-2xl);
  border-radius: 20px;
  border: 1px solid var(--border-color);
  transition: all var(--transition-normal);
}

.faq-item:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-large);
}

.faq-question {
  font-size: var(--font-size-lg);
  font-weight: 600;
  margin-bottom: var(--space-md);
  color: var(--text-primary);
}

.faq-answer {
  color: var(--text-secondary);
  line-height: 1.6;
}

/* Collaboration Section */
.collaboration-section {
  background: var(--bg-secondary);
  padding: var(--space-4xl) 0;
}

.collaboration-content {
  text-align: center;
  max-width: 800px;
  margin: 0 auto;
}

.collaboration-title {
  font-size: var(--font-size-3xl);
  font-weight: 700;
  margin-bottom: var(--space-md);
  color: var(--text-primary);
}

.collaboration-description {
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: var(--space-2xl);
}

.collaboration-features {
  display: flex;
  justify-content: center;
  gap: var(--space-2xl);
  margin-bottom: var(--space-2xl);
  flex-wrap: wrap;
}

.feature {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-lg);
  background: var(--bg-primary);
  border-radius: 15px;
  border: 1px solid var(--border-color);
  min-width: 120px;
}

.feature i {
  font-size: var(--font-size-xl);
  color: var(--primary-500);
}

.feature span {
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: var(--text-secondary);
}

.collaboration-actions {
  display: flex;
  gap: var(--space-md);
  justify-content: center;
  flex-wrap: wrap;
}

/* Responsive Design for About Page */
@media (max-width: 768px) {
  .about-story {
    grid-template-columns: 1fr;
    gap: var(--space-2xl);
  }

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

  .timeline::before {
    left: 1rem;
  }

  .timeline-item {
    padding-left: 3rem;
  }

  .timeline-marker {
    left: 0.25rem;
  }

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

  .project-stats {
    grid-template-columns: 1fr;
  }

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

  /* Contact page responsive */
  .contact-layout {
    grid-template-columns: 1fr;
    gap: var(--space-2xl);
  }

  .collaboration-features {
    grid-template-columns: 1fr 1fr;
    gap: var(--space-md);
  }

  /* Blog page responsive */
  .blog-controls {
    flex-direction: column;
    align-items: stretch;
    gap: var(--space-lg);
  }

  .blog-search {
    width: 100%;
  }

  .blog-categories {
    justify-content: center;
  }

  .featured-article {
    grid-template-columns: 1fr;
    gap: 0;
  }

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

  .newsletter-form {
    flex-direction: column;
  }

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

/* High contrast mode support */
@media (prefers-contrast: high) {
  .btn {
    border: 2px solid currentColor;
  }
}