/* Modern Portfolio Styles - 2024 */

/* CSS Custom Properties */
:root {
  /* Typography */
  --font-primary: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI",
    sans-serif;
  --font-mono: "JetBrains Mono", "Fira Code", monospace;

  /* Colors - Light Theme */
  --color-primary: #6366f1;
  --color-primary-dark: #4f46e5;
  --color-secondary: #0ea5e9;
  --color-accent: #f59e0b;
  --color-success: #10b981;
  --color-warning: #f59e0b;
  --color-error: #ef4444;

  --color-bg-primary: #ffffff;
  --color-bg-secondary: #f8fafc;
  --color-bg-tertiary: #f1f5f9;
  --color-bg-glass: rgba(255, 255, 255, 0.8);
  --color-bg-card: rgba(255, 255, 255, 0.9);

  --color-text-primary: #0f172a;
  --color-text-secondary: #475569;
  --color-text-tertiary: #64748b;
  --color-text-inverse: #ffffff;

  --color-border: rgba(148, 163, 184, 0.2);
  --color-border-light: rgba(148, 163, 184, 0.1);

  /* Gradients */
  --gradient-primary: linear-gradient(135deg, #6366f1 0%, #8b5cf6 100%);
  --gradient-secondary: linear-gradient(135deg, #0ea5e9 0%, #06b6d4 100%);
  --gradient-hero: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  --gradient-text: linear-gradient(135deg, #6366f1 0%, #8b5cf6 100%);

  /* Shadows */
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --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);
  --shadow-glow: 0 0 20px rgba(99, 102, 241, 0.3);

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

  /* Border Radius */
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  --radius-full: 9999px;

  /* Transitions */
  --transition-fast: 0.15s ease-out;
  --transition-normal: 0.25s ease-out;
  --transition-slow: 0.4s ease-out;

  /* Z-index */
  --z-modal: 1000;
  --z-dropdown: 900;
  --z-header: 800;
  --z-overlay: 700;
}

/* Dark Theme */
[data-theme="dark"] {
  --color-bg-primary: #0f172a;
  --color-bg-secondary: #1e293b;
  --color-bg-tertiary: #334155;
  --color-bg-glass: rgba(15, 23, 42, 0.8);
  --color-bg-card: rgba(30, 41, 59, 0.9);

  --color-text-primary: #f8fafc;
  --color-text-secondary: #cbd5e1;
  --color-text-tertiary: #94a3b8;
  --color-text-inverse: #0f172a;

  --color-border: rgba(71, 85, 105, 0.3);
  --color-border-light: rgba(71, 85, 105, 0.1);
}

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

html {
  scroll-behavior: smooth;
  overflow-x: hidden;
}

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

/* Selection */
::selection {
  background: var(--color-primary);
  color: var(--color-text-inverse);
}

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

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

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

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

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

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

/* Custom Cursor */
.cursor,
.cursor-follower {
  position: fixed;
  top: 0;
  left: 0;
  width: 20px;
  height: 20px;
  background: var(--color-primary);
  border-radius: 50%;
  pointer-events: none;
  z-index: 9999;
  transition: transform 0.1s ease;
}

.cursor-follower {
  width: 40px;
  height: 40px;
  background: transparent;
  border: 2px solid var(--color-primary);
  opacity: 0.5;
  transition: transform 0.3s ease;
}

@media (max-width: 768px) {
  .cursor,
  .cursor-follower {
    display: none;
  }
}

/* Navigation */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  background: var(--color-bg-glass);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--color-border);
  z-index: var(--z-header);
  transition: all var(--transition-normal);
}

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

.nav-logo {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--color-primary);
}

.logo-svg {
    width: 48px;
    height: 48px;
    transition: transform var(--transition-normal);
    transform: scale(1.3);
}

[data-theme="light"] .logo-svg {
filter: brightness(0);
}

.logo-svg:hover {
  transform: scale(1.5);
}

.logo-text {
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  display: none; /* Hide text when SVG is present */
}

/* Show text logo as fallback */
@supports not (background-clip: text) {
  .logo-svg {
    display: none;
  }

  .logo-text {
    display: inline-block;
    color: var(--color-primary);
  }
}

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

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

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

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

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

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

.theme-toggle {
  background: none;
  border: 2px solid var(--color-border);
  border-radius: var(--radius-full);
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all var(--transition-fast);
  position: relative;
  overflow: hidden;
}

.theme-toggle:hover {
  border-color: var(--color-primary);
  transform: scale(1.1);
}

.theme-toggle .sun-icon,
.theme-toggle .moon-icon {
  position: absolute;
  transition: all var(--transition-normal);
}

[data-theme="light"] .theme-toggle .moon-icon,
[data-theme="dark"] .theme-toggle .sun-icon {
  opacity: 0;
  transform: rotate(180deg);
}

[data-theme="light"] .theme-toggle .sun-icon,
[data-theme="dark"] .theme-toggle .moon-icon {
  opacity: 1;
  transform: rotate(0deg);
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 4px;
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--space-sm);
}

.nav-toggle span {
  width: 25px;
  height: 2px;
  background: var(--color-text-primary);
  transition: all var(--transition-normal);
}

/* Mobile Navigation */
@media (max-width: 768px) {
  .nav-menu {
    position: fixed;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--color-bg-glass);
    backdrop-filter: blur(10px);
    flex-direction: column;
    padding: var(--space-xl);
    gap: var(--space-lg);
    transform: translateY(-100%);
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-normal);
  }

  .nav-menu.active {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
  }

  .nav-toggle {
    display: flex;
  }

  .nav-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(6px, 6px);
  }

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

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

/* Section Styling */
section {
  padding: var(--space-3xl) 0;
  position: relative;
}

.section-header {
  text-align: center;
  margin-bottom: var(--space-3xl);
}

.section-subtitle {
  display: inline-block;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  font-weight: 600;
  font-size: 0.875rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: var(--space-sm);
}

.section-title {
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 800;
  color: var(--color-text-primary);
  margin-bottom: var(--space-md);
  line-height: 1.2;
}

.section-description {
  font-size: 1.125rem;
  color: var(--color-text-secondary);
  max-width: 600px;
  margin: 0 auto;
  line-height: 1.6;
}

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

.hero-bg {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: -1;
}

.hero-particles {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: radial-gradient(
      circle at 25% 25%,
      rgba(99, 102, 241, 0.1) 0%,
      transparent 50%
    ),
    radial-gradient(
      circle at 75% 75%,
      rgba(139, 92, 246, 0.1) 0%,
      transparent 50%
    );
}

.hero-gradient {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(
    135deg,
    rgba(99, 102, 241, 0.05) 0%,
    rgba(139, 92, 246, 0.05) 50%,
    rgba(14, 165, 233, 0.05) 100%
  );
}

.hero-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-3xl);
  align-items: center;
  padding-top: 30px;
}

.hero-greeting {
  margin-bottom: var(--space-md);
}

.greeting-text {
  color: var(--color-primary);
  font-weight: 600;
  font-size: 1.125rem;
}

.hero-name {
  font-size: clamp(2.5rem, 6vw, 4rem);
  font-weight: 900;
  line-height: 1.1;
  margin-bottom: var(--space-lg);
}

.name-part {
  display: inline-block;
}

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

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

.role-text {
  color: var(--color-text-secondary);
  font-weight: 500;
  font-size: 1.125rem;
}

.role-separator {
  color: var(--color-primary);
  font-weight: bold;
}

.hero-description {
  font-size: 1.125rem;
  color: var(--color-text-secondary);
  line-height: 1.7;
  margin-bottom: var(--space-xl);
  max-width: 90%;
}

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

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

.social-link {
  width: 48px;
  height: 48px;
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-secondary);
  text-decoration: none;
  transition: all var(--transition-normal);
  backdrop-filter: blur(10px);
}

.social-link:hover {
  background: var(--color-primary);
  color: var(--color-text-inverse);
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

/* Hero Visual */
.hero-visual {
  display: flex;
  justify-content: center;
  align-items: center;
  position: relative;
}

.profile-container {
  position: relative;
  place-items: center;
}

.profile-frame {
  position: relative;
  width: 350px;
  height: 350px;
  border-radius: 50%;
  overflow: hidden;
  background: var(--gradient-primary);
  padding: 4px;
  box-shadow: var(--shadow-xl);
}

.profile-image {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 50%;
}

.profile-glow {
  position: absolute;
  top: -20px;
  left: -20px;
  right: -20px;
  bottom: -20px;
  background: var(--gradient-primary);
  border-radius: 50%;
  opacity: 0.3;
  filter: blur(20px);
  z-index: -1;
  animation: pulse 3s infinite;
}

@keyframes pulse {
  0%,
  100% {
    transform: scale(1);
    opacity: 0.3;
  }
  50% {
    transform: scale(1.05);
    opacity: 0.5;
  }
}

.floating-cards {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
}

.floating-card {
  position: absolute;
  background: var(--color-bg-card);
  backdrop-filter: blur(10px);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-md) var(--space-lg);
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  box-shadow: var(--shadow-lg);
  animation: float 3s ease-in-out infinite;
  font-weight: 600;
  font-size: 0.875rem;
  color: var(--color-text-primary);
}

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

.floating-card:nth-child(2) {
  top: 50%;
  left: -15%;
  animation-delay: 1s;
}

.floating-card:nth-child(3) {
  bottom: 15%;
  right: -5%;
  animation-delay: 2s;
}

@keyframes float {
  0%,
  100% {
    transform: translateY(0px);
  }
  50% {
    transform: translateY(-10px);
  }
}

.scroll-indicator {
  position: absolute;
  bottom: var(--space-xl);
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-sm);
  color: var(--color-text-tertiary);
  font-size: 0.875rem;
}

.scroll-line {
  width: 2px;
  height: 30px;
  background: var(--gradient-primary);
  border-radius: var(--radius-full);
  animation: scrollIndicator 2s ease-in-out infinite;
}

@keyframes scrollIndicator {
  0%,
  100% {
    opacity: 0.3;
    transform: scaleY(1);
  }
  50% {
    opacity: 1;
    transform: scaleY(1.5);
  }
}

/* Responsive Hero */
@media (max-width: 1024px) {
  .hero-content {
    gap: var(--space-2xl);
  }
  
  .profile-frame {
    width: 320px;
    height: 320px;
  }
  
  .floating-card:nth-child(1) {
    top: 5%;
    right: -5%;
  }
  
  .floating-card:nth-child(2) {
    top: 50%;
    left: -10%;
  }
  
  .floating-card:nth-child(3) {
    bottom: 10%;
    right: 0%;
  }
}

@media (max-width: 768px) {
  .hero {
    min-height: 100vh;
    padding: var(--space-xl) 0;
  }
  
  .hero-content {
    grid-template-columns: 1fr;
    gap: var(--space-2xl);
    text-align: center;
    padding-top: 60px;
  }
  
  .hero-text {
    order: 2;
  }
  
  .hero-visual {
    order: 1;
    margin-bottom: var(--space-lg);
  }

  .hero-name {
    font-size: clamp(2rem, 8vw, 3rem);
    margin-bottom: var(--space-md);
  }
  
  .hero-description {
    font-size: 1rem;
    max-width: 100%;
    margin-bottom: var(--space-lg);
  }
  
  .hero-roles {
    justify-content: center;
    margin-bottom: var(--space-md);
  }
  
  .role-text {
    font-size: 1rem;
  }

  .profile-frame {
    width: 250px;
    height: 250px;
  }

  .floating-cards {
    position: static;
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: var(--space-sm);
    margin-top: var(--space-lg);
  }
  
  .floating-card {
    position: static;
    margin: 0;
    animation: none;
    font-size: 0.8rem;
    padding: var(--space-sm) var(--space-md);
  }
  
  .hero-actions {
    justify-content: center;
    gap: var(--space-md);
    margin-bottom: var(--space-lg);
  }
  
  .hero-social {
    justify-content: center;
  }
  
  .scroll-indicator {
    bottom: var(--space-lg);
  }
}

@media (max-width: 480px) {
  .hero {
    padding: var(--space-lg) 0;
  }
  
  .hero-content {
    gap: var(--space-xl);
    /* padding-top: 40px; */
  }
  
  .hero-name {
    font-size: clamp(1.8rem, 10vw, 2.5rem);
    line-height: 1.2;
  }
  
  .hero-description {
    font-size: 0.95rem;
    line-height: 1.6;
  }
  
  .profile-frame {
    width: 200px;
    height: 200px;
  }
  
  .hero-actions {
    flex-direction: column;
    align-items: center;
    gap: var(--space-sm);
    width: 100%;
  }
  
  .btn {
    width: 100%;
    max-width: 280px;
    justify-content: center;
  }
  
  .floating-card {
    font-size: 0.75rem;
    padding: var(--space-xs) var(--space-sm);
  }
  
  .social-link {
    width: 44px;
    height: 44px;
  }
}

/* Button Styles */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-md) var(--space-xl);
  border-radius: var(--radius-full);
  font-weight: 600;
  text-decoration: none;
  transition: all var(--transition-normal);
  cursor: pointer;
  border: none;
  font-size: 1rem;
  position: relative;
  overflow: hidden;
}

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

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

.btn-secondary {
  background: var(--color-bg-card);
  color: var(--color-text-primary);
  border: 2px solid var(--color-border);
  backdrop-filter: blur(10px);
}

.btn-secondary:hover {
  background: var(--color-primary);
  color: var(--color-text-inverse);
  border-color: var(--color-primary);
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

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

.about-content {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: var(--space-3xl);
  align-items: start;
}

.about-intro h3 {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-text-primary);
  margin-bottom: var(--space-lg);
}

.about-intro p {
  font-size: 1.125rem;
  color: var(--color-text-secondary);
  line-height: 1.7;
  margin-bottom: var(--space-lg);
}

.about-highlights {
  display: flex;
  flex-direction: column;
  gap: var(--space-xl);
  margin-top: var(--space-xl);
}

.highlight-item {
  display: flex;
  align-items: flex-start;
  gap: var(--space-lg);
  padding: var(--space-lg);
  background: var(--color-bg-card);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  backdrop-filter: blur(10px);
  transition: all var(--transition-normal);
}

.highlight-item:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.highlight-icon {
  width: 50px;
  height: 50px;
  background: var(--gradient-primary);
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-inverse);
  flex-shrink: 0;
}

.highlight-content h4 {
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--color-text-primary);
  margin-bottom: var(--space-xs);
}

.highlight-content p {
  color: var(--color-text-secondary);
  line-height: 1.5;
}

.about-stats {
  position: sticky;
  top: 100px;
}

.stats-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-lg);
  padding: var(--space-xl);
  background: var(--color-bg-card);
  border-radius: var(--radius-xl);
  border: 1px solid var(--color-border);
  backdrop-filter: blur(10px);
  box-shadow: var(--shadow-md);
}

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

.stat-number {
  font-size: 2.5rem;
  font-weight: 900;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  display: block;
  margin-bottom: var(--space-xs);
}

.stat-label {
  color: var(--color-text-secondary);
  font-size: 0.875rem;
  font-weight: 500;
}

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

  .about-stats {
    position: static;
  }

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

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

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

.timeline-item {
  position: relative;
  margin-bottom: var(--space-3xl);
  padding-left: 80px;
}

.timeline-item::before {
  content: "";
  position: absolute;
  left: 22px;
  top: 0;
  width: 16px;
  height: 16px;
  background: var(--color-primary);
  border-radius: 50%;
  border: 4px solid var(--color-bg-primary);
  box-shadow: 0 0 0 4px var(--color-primary);
}

.timeline-date {
  position: absolute;
  left: -150px;
  top: 0;
  width: 120px;
  color: var(--color-primary);
  font-weight: 600;
  font-size: 0.875rem;
  text-align: right;
}

.timeline-content {
  background: var(--color-bg-card);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  border: 1px solid var(--color-border);
  backdrop-filter: blur(10px);
  box-shadow: var(--shadow-md);
  transition: all var(--transition-normal);
}

.timeline-content:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.timeline-company h3 {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-text-primary);
  margin-bottom: var(--space-xs);
}

.timeline-company h4 {
  color: var(--color-primary);
  font-weight: 600;
  margin-bottom: var(--space-lg);
}

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

.timeline-achievements {
  list-style: none;
  margin-bottom: var(--space-lg);
}

.timeline-achievements li {
  color: var(--color-text-secondary);
  line-height: 1.6;
  margin-bottom: var(--space-sm);
  position: relative;
  padding-left: var(--space-lg);
}

.timeline-achievements li::before {
  content: "→";
  position: absolute;
  left: 0;
  color: var(--color-primary);
  font-weight: bold;
}

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

.tech-tag {
  background: var(--color-bg-tertiary);
  color: var(--color-text-secondary);
  padding: var(--space-xs) var(--space-sm);
  border-radius: var(--radius-full);
  font-size: 0.75rem;
  font-weight: 500;
}

@media (max-width: 768px) {
  .timeline::before {
    left: 15px;
  }

  .timeline-item {
    padding-left: 40px;
  }

  .timeline-item::before {
    left: 7px;
  }

  .timeline-date {
    position: static;
    width: auto;
    text-align: left;
    margin-bottom: var(--space-md);
    color: var(--color-primary);
  }
}

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

.projects-filter {
  display: flex;
  justify-content: center;
  gap: var(--space-md);
  margin-bottom: var(--space-3xl);
  flex-wrap: wrap;
}

.filter-btn {
  background: var(--color-bg-card);
  border: 2px solid var(--color-border);
  color: var(--color-text-secondary);
  padding: var(--space-sm) var(--space-lg);
  border-radius: var(--radius-full);
  cursor: pointer;
  transition: all var(--transition-normal);
  font-weight: 500;
  backdrop-filter: blur(10px);
}

.filter-btn:hover,
.filter-btn.active {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: var(--color-text-inverse);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

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

.project-card {
  background: var(--color-bg-card);
  border-radius: var(--radius-xl);
  overflow: hidden;
  border: 1px solid var(--color-border);
  transition: all var(--transition-normal);
  backdrop-filter: blur(10px);
  box-shadow: var(--shadow-md);
}

.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-slow);
}

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

.project-overlay {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  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-actions {
  display: flex;
  gap: var(--space-md);
}

.project-link {
  width: 48px;
  height: 48px;
  background: var(--color-bg-card);
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-primary);
  text-decoration: none;
  transition: all var(--transition-normal);
}

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

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

.project-category {
  color: var(--color-primary);
  font-size: 0.875rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: var(--space-sm);
}

.project-title {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-text-primary);
  margin-bottom: var(--space-md);
  line-height: 1.3;
}

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

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

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

/* Skills Section */
.skills-content {
  display: grid;
  gap: var(--space-3xl);
}

.skills-category {
  background: var(--color-bg-card);
  border-radius: var(--radius-xl);
  padding: var(--space-xl);
  border: 1px solid var(--color-border);
  backdrop-filter: blur(10px);
  box-shadow: var(--shadow-md);
  transition: all var(--transition-normal);
}

.skills-category:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.category-title {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-text-primary);
  margin-bottom: var(--space-xl);
}

.category-title i {
  color: var(--color-primary);
}

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

.skill-item {
  display: flex;
  align-items: flex-start;
  gap: var(--space-md);
  padding: var(--space-lg);
  background: var(--color-bg-secondary);
  border-radius: var(--radius-lg);
  transition: all var(--transition-normal);
  border: 1px solid var(--color-border-light);
}

.skill-item:hover {
  background: var(--color-bg-primary);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.skill-icon {
  font-size: 1.5rem;
  line-height: 1;
  flex-shrink: 0;
}

.skill-info h4 {
  font-weight: 600;
  color: var(--color-text-primary);
  margin-bottom: var(--space-xs);
}

.skill-info p {
  color: var(--color-text-secondary);
  font-size: 0.875rem;
  line-height: 1.4;
}

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

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

.contact-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-3xl);
  margin-top: var(--space-3xl);
}

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

.contact-item {
  display: flex;
  align-items: flex-start;
  gap: var(--space-lg);
  padding: var(--space-xl);
  background: var(--color-bg-card);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  backdrop-filter: blur(10px);
  transition: all var(--transition-normal);
}

.contact-item:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.contact-icon {
  width: 50px;
  height: 50px;
  background: var(--gradient-primary);
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-inverse);
  flex-shrink: 0;
}

.contact-details h4 {
  font-weight: 600;
  color: var(--color-text-primary);
  margin-bottom: var(--space-sm);
}

.contact-details p {
  color: var(--color-text-secondary);
  margin-bottom: var(--space-sm);
  line-height: 1.5;
}

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

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

.contact-social {
  padding: var(--space-xl);
  background: var(--color-bg-card);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  backdrop-filter: blur(10px);
  text-align: center;
}

.contact-social h4 {
  font-weight: 600;
  color: var(--color-text-primary);
  margin-bottom: var(--space-lg);
}

.social-links {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.social-links .social-link {
  width: auto;
  height: auto;
  background: var(--color-bg-secondary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-md) var(--space-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-md);
  color: var(--color-text-secondary);
  text-decoration: none;
  transition: all var(--transition-normal);
  font-weight: 500;
}

.social-links .social-link:hover {
  background: var(--color-primary);
  color: var(--color-text-inverse);
  border-color: var(--color-primary);
}

/* Contact Form */
.contact-form-container {
  background: var(--color-bg-card);
  border-radius: var(--radius-xl);
  padding: var(--space-xl);
  border: 1px solid var(--color-border);
  backdrop-filter: blur(10px);
  box-shadow: var(--shadow-md);
}

.contact-form {
  display: flex;
  flex-direction: column;
  gap: var(--space-lg);
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.form-group label {
  font-weight: 600;
  color: var(--color-text-primary);
  font-size: 0.875rem;
}

.form-group input,
.form-group textarea {
  padding: var(--space-md);
  border: 2px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-bg-secondary);
  color: var(--color-text-primary);
  font-family: inherit;
  font-size: 1rem;
  transition: all var(--transition-normal);
}

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

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

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

/* Footer */
.footer {
  background: linear-gradient(135deg, var(--color-bg-primary) 0%, var(--color-bg-secondary) 100%);
  border-top: 1px solid var(--color-border);
  padding: var(--space-3xl) 0 var(--space-xl) 0;
  position: relative;
  overflow: hidden;
}

.footer::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: radial-gradient(circle at 30% 20%, rgba(99, 102, 241, 0.05) 0%, transparent 50%),
              radial-gradient(circle at 70% 80%, rgba(139, 92, 246, 0.05) 0%, transparent 50%);
  pointer-events: none;
}

.footer-content {
  position: relative;
  z-index: 1;
}

.footer-top {
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: var(--space-3xl);
  margin-bottom: var(--space-2xl);
}

.footer-brand {
  display: flex;
  flex-direction: column;
  gap: var(--space-lg);
}

.footer-logo {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  margin-bottom: var(--space-md);
}

.footer-logo-img {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  object-fit: cover;
}

.footer-logo-text {
  font-size: 1.25rem;
  font-weight: 700;
  background: var(--gradient-text);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.footer-description {
  color: var(--color-text-secondary);
  font-size: 1rem;
  line-height: 1.6;
  max-width: 300px;
}

.footer-social {
  display: flex;
  gap: var(--space-md);
}

.footer-social-link {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--color-bg-glass);
  backdrop-filter: blur(10px);
  border: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-secondary);
  text-decoration: none;
  transition: all var(--transition-normal);
  position: relative;
  overflow: hidden;
}

.footer-social-link::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--gradient-primary);
  opacity: 0;
  transition: opacity var(--transition-normal);
}

.footer-social-link:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
  border-color: var(--color-primary);
}

.footer-social-link:hover::before {
  opacity: 0.1;
}

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

.footer-nav {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-xl);
}

.footer-nav-section h4 {
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--color-text-primary);
  margin-bottom: var(--space-lg);
  position: relative;
}

.footer-nav-section h4::after {
  content: '';
  position: absolute;
  bottom: -8px;
  left: 0;
  width: 30px;
  height: 2px;
  background: var(--gradient-primary);
  border-radius: 1px;
}

.footer-nav-section ul {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.footer-nav-section a {
  color: var(--color-text-secondary);
  text-decoration: none;
  font-size: 0.9rem;
  line-height: 1.5;
  transition: all var(--transition-fast);
  position: relative;
  padding-left: var(--space-sm);
}

.footer-nav-section a::before {
  content: '';
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 0;
  height: 2px;
  background: var(--color-primary);
  transition: width var(--transition-fast);
}

.footer-nav-section a:hover {
  color: var(--color-primary);
  padding-left: var(--space-md);
}

.footer-nav-section a:hover::before {
  width: 12px;
}

.tech-badge {
  display: inline-flex;
  align-items: center;
  padding: var(--space-xs) var(--space-sm);
  background: var(--color-bg-glass);
  backdrop-filter: blur(10px);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--color-text-secondary);
  transition: all var(--transition-fast);
  cursor: default;
}

.tech-badge:hover {
  background: var(--color-primary);
  color: var(--color-text-inverse);
  border-color: var(--color-primary);
  transform: translateY(-1px);
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: var(--space-xl);
  border-top: 1px solid var(--color-border);
  gap: var(--space-lg);
}

.footer-bottom-left {
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
}

.footer-bottom-left p {
  color: var(--color-text-secondary);
  font-size: 0.875rem;
  line-height: 1.5;
  margin: 0;
}

.heart {
  color: var(--color-error);
  animation: heartBeat 1.5s ease-in-out infinite;
}

@keyframes heartBeat {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.1); }
}

.back-to-top {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  padding: var(--space-sm) var(--space-lg);
  background: var(--color-bg-glass);
  backdrop-filter: blur(10px);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  color: var(--color-text-secondary);
  font-size: 0.875rem;
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition-normal);
  text-decoration: none;
}

.back-to-top:hover {
  background: var(--color-primary);
  color: var(--color-text-inverse);
  border-color: var(--color-primary);
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.back-to-top i {
  width: 16px;
  height: 16px;
}

/* Responsive Footer */
@media (max-width: 1024px) {
  .footer-top {
    grid-template-columns: 1fr;
    gap: var(--space-2xl);
  }
  
  .footer-nav {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .footer {
    padding: var(--space-2xl) 0 var(--space-lg) 0;
  }
  
  .footer-nav {
    grid-template-columns: 1fr;
    gap: var(--space-lg);
  }
  
  .footer-bottom {
    flex-direction: column;
    text-align: center;
    gap: var(--space-md);
  }
  
  .footer-social {
    justify-content: center;
  }
}

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

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

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

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

.fade-in-left {
  animation: fadeInLeft 0.6s ease-out forwards;
}

.fade-in-right {
  animation: fadeInRight 0.6s ease-out forwards;
}

/* Loading state for images */
img {
  transition: opacity var(--transition-normal);
}

img[data-loading="true"] {
  opacity: 0;
}

/* Print styles */
@media print {
  .nav,
  .hero-actions,
  .hero-social,
  .contact-form-container,
  .footer {
    display: none !important;
  }

  .hero {
    min-height: auto;
    page-break-after: always;
  }

  section {
    page-break-inside: avoid;
    padding: var(--space-lg) 0;
  }
}

/* High contrast mode */
@media (prefers-contrast: high) {
  :root {
    --color-border: #000000;
    --color-border-light: #000000;
  }

  [data-theme="dark"] {
    --color-border: #ffffff;
    --color-border-light: #ffffff;
  }
}

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

  .scroll-line {
    animation: none;
  }

  .profile-glow {
    animation: none;
  }

  .floating-card {
    animation: none;
  }
}