/* ============================================
   CSS RESET & BASE STYLES - OPTIMIZED
============================================ */
:root {
  /* Primary Colors - Refined Professional Palette */
  --primary: #6366f1;
  --primary-dark: #4f46e5;
  --primary-light: #818cf8;
  --primary-ultralight: #c7d2fe;
  
  /* Neutral Colors - Enhanced Contrast for Accessibility */
  --neutral-50: #fafafa;
  --neutral-100: #f5f5f5;
  --neutral-200: #e5e5e5;
  --neutral-300: #d4d4d4;
  --neutral-400: #a3a3a3;
  --neutral-500: #737373;
  --neutral-600: #525252;
  --neutral-700: #404040;
  --neutral-800: #262626;
  --neutral-900: #171717;
  --neutral-950: #0a0a0a;
  
  /* Semantic Colors - Improved Contrast Ratio */
  --bg-primary: var(--neutral-950);
  --bg-secondary: var(--neutral-900);
  --bg-tertiary: var(--neutral-800);
  --text-primary: var(--neutral-50);
  --text-secondary: var(--neutral-300);
  --text-tertiary: var(--neutral-500);
  
  /* Accent Colors - WCAG AA Compliant */
  --accent-success: #10b981;
  --accent-warning: #f59e0b;
  --accent-error: #ef4444;
  --accent-info: #3b82f6;
  
  /* Border & Shadow - Refined */
  --border-color: var(--neutral-800);
  --border-light: var(--neutral-700);
  --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.1);
  --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
  --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
  --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
  --shadow-xxl: 0 25px 50px -12px rgb(0 0 0 / 0.25);
  
  /* Spacing - Consistent 8px base */
  --space-3xs: 0.25rem;  /* 4px */
  --space-2xs: 0.5rem;   /* 8px */
  --space-xs: 0.75rem;   /* 12px */
  --space-sm: 1rem;      /* 16px */
  --space-md: 1.5rem;    /* 24px */
  --space-lg: 2rem;      /* 32px */
  --space-xl: 3rem;      /* 48px */
  --space-2xl: 4rem;     /* 64px */
  --space-3xl: 6rem;     /* 96px */
  
  /* Typography - Enhanced Scale */
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  --text-xs: 0.75rem;    /* 12px */
  --text-sm: 0.875rem;   /* 14px */
  --text-base: 1rem;     /* 16px */
  --text-lg: 1.125rem;   /* 18px */
  --text-xl: 1.25rem;    /* 20px */
  --text-2xl: 1.5rem;    /* 24px */
  --text-3xl: 1.875rem;  /* 30px */
  --text-4xl: 2.25rem;   /* 36px */
  --text-5xl: 3rem;      /* 48px */
  --text-6xl: 3.75rem;   /* 60px */
  --text-7xl: 4.5rem;    /* 72px */
  
  /* Line Heights */
  --leading-none: 1;
  --leading-tight: 1.25;
  --leading-snug: 1.375;
  --leading-normal: 1.5;
  --leading-relaxed: 1.625;
  --leading-loose: 2;
  
  /* Border Radius */
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  --radius-2xl: 1.5rem;
  --radius-full: 9999px;
  
  /* Transitions - Performance Optimized */
  --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-base: 250ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 400ms cubic-bezier(0.4, 0, 0.2, 1);
  
  /* Z-index Scale */
  --z-0: 0;
  --z-10: 10;
  --z-20: 20;
  --z-30: 30;
  --z-40: 40;
  --z-50: 50;
}

/* Modern CSS Reset */
*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 5rem;
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-sans);
  font-size: var(--text-base);
  line-height: var(--leading-relaxed);
  color: var(--text-primary);
  background-color: var(--bg-primary);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
  min-height: 100vh;
  position: relative;
}

/* Focus visible with better contrast */
:focus-visible {
  outline: 3px solid var(--primary);
  outline-offset: 3px;
  border-radius: var(--radius-sm);
}

/* Selection styles */
::selection {
  background-color: var(--primary);
  color: white;
}

::-moz-selection {
  background-color: var(--primary);
  color: white;
}

/* ============================================
   ACCESSIBILITY
============================================ */
.skip-link {
  position: absolute;
  top: -3rem;
  left: 0.5rem;
  background: var(--primary);
  color: white;
  padding: var(--space-xs) var(--space-sm);
  text-decoration: none;
  border-radius: 0 0 var(--radius-md) 0;
  z-index: var(--z-50);
  transition: top var(--transition-fast);
  font-weight: 600;
}

.skip-link:focus {
  top: 0.5rem;
}

/* Reduced motion */
@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;
  }
}

/* High contrast mode */
@media (prefers-contrast: high) {
  :root {
    --primary: #0000ff;
    --primary-dark: #0000cc;
    --primary-light: #3333ff;
    --text-primary: #000000;
    --text-secondary: #333333;
  }
  
  body {
    background: #ffffff !important;
    color: #000000 !important;
    border: 1px solid currentColor;
  }
  
  .navbar {
    background: #ffffff !important;
    border-bottom: 2px solid currentColor;
  }
  
  .nav-link {
    color: #000000 !important;
  }
}

/* ============================================
   LAYOUT UTILITIES
============================================ */
.container {
  width: 100%;
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 var(--space-md);
}

.section-header {
  text-align: center;
  margin-bottom: var(--space-3xl);
  max-width: 768px;
  margin-left: auto;
  margin-right: auto;
}

.section-label {
  display: inline-block;
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--primary);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: var(--space-sm);
  background: rgba(99, 102, 241, 0.1);
  padding: var(--space-2xs) var(--space-md);
  border-radius: var(--radius-full);
}

.section-title {
  font-size: var(--text-5xl);
  font-weight: 800;
  line-height: var(--leading-tight);
  margin-bottom: var(--space-md);
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  letter-spacing: -0.025em;
}

@media (max-width: 768px) {
  .section-title {
    font-size: var(--text-3xl);
  }
}

@media (max-width: 480px) {
  .section-title {
    font-size: var(--text-2xl);
  }
}

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

@media (max-width: 768px) {
  .section-description {
    font-size: var(--text-lg);
  }
}

@media (max-width: 480px) {
  .section-description {
    font-size: var(--text-base);
  }
}

/* ============================================
   PRELOADER
============================================ */
#preloader {
  position: fixed;
  inset: 0;
  background: var(--bg-primary);
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  z-index: var(--z-50);
  transition: opacity var(--transition-slow) var(--transition-slow);
}

.spinner {
  width: 56px;
  height: 56px;
  border: 3px solid rgba(99, 102, 241, 0.3);
  border-top: 3px solid var(--primary);
  border-radius: 50%;
  animation: spin 1s cubic-bezier(0.68, -0.55, 0.27, 1.55) infinite;
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

/* ============================================
   NAVIGATION
============================================ */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 80px;
  background: rgba(10, 10, 10, 0.85);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  z-index: var(--z-40);
  transition: all var(--transition-base);
}

.navbar.scrolled {
  height: 72px;
  background: rgba(10, 10, 10, 0.95);
  border-bottom-color: rgba(255, 255, 255, 0.12);
}

.navbar .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  padding: 0 var(--space-lg);
}

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

.nav-brand .logo {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  text-decoration: none;
  font-weight: 800;
  transition: transform var(--transition-fast);
}

.logo-text {
  font-size: var(--text-2xl);
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  display: inline-block;
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(99, 102, 241, 0.1);
  border-radius: var(--radius-lg);
  border: 1px solid rgba(99, 102, 241, 0.2);
}

.logo-full {
  font-size: var(--text-lg);
  color: var(--text-primary);
  display: none;
}

@media (min-width: 1024px) {
  .logo-full {
    display: inline;
  }
}

.nav-links {
  display: flex;
  gap: var(--space-xl);
  list-style: none;
}

@media (max-width: 768px) {
  .nav-links {
    position: fixed;
    top: 72px;
    left: 0;
    right: 0;
    background: var(--bg-primary);
    flex-direction: column;
    padding: var(--space-xl);
    border-top: 1px solid var(--border-color);
    border-bottom: 1px solid var(--border-color);
    transform: translateY(-100%);
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-base);
    z-index: var(--z-30);
    gap: 0;
  }
  
  .nav-links.active {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
  }
  
  .nav-links li {
    width: 100%;
  }
}

.nav-link {
  text-decoration: none;
  color: var(--text-secondary);
  font-weight: 600;
  font-size: var(--text-sm);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: var(--space-xs) 0;
  position: relative;
  transition: all var(--transition-fast);
}

@media (max-width: 768px) {
  .nav-link {
    display: block;
    padding: var(--space-md) 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  }
  
  .nav-link:last-child {
    border-bottom: none;
  }
}

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

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

.nav-link.active::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--primary), var(--primary-light));
  border-radius: var(--radius-full);
}

@media (max-width: 768px) {
  .nav-link.active::after {
    height: 0;
  }
}

/* Burger Menu */
.burger-menu {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--space-xs);
  width: 48px;
  height: 48px;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 6px;
}

@media (max-width: 768px) {
  .burger-menu {
    display: flex;
  }
}

.burger-line {
  width: 24px;
  height: 2px;
  background: var(--text-primary);
  border-radius: var(--radius-full);
  transition: all var(--transition-fast);
  transform-origin: center;
}

.burger-menu[aria-expanded="true"] .burger-line:nth-child(1) {
  transform: translateY(8px) rotate(45deg);
}

.burger-menu[aria-expanded="true"] .burger-line:nth-child(2) {
  opacity: 0;
}

.burger-menu[aria-expanded="true"] .burger-line:nth-child(3) {
  transform: translateY(-8px) rotate(-45deg);
}

.theme-toggle {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  color: var(--text-primary);
  width: 48px;
  height: 48px;
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
}

.theme-toggle:hover {
  background: rgba(255, 255, 255, 0.1);
  transform: translateY(-2px) rotate(12deg);
}

.theme-label {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* ============================================
   HERO SECTION
============================================ */
.hero {
  padding-top: 140px;
  padding-bottom: var(--space-3xl);
  position: relative;
  overflow: hidden;
  min-height: 100vh;
  display: flex;
  align-items: center;
}

.hero-container {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: var(--space-3xl);
  align-items: center;
  position: relative;
  z-index: 1;
}

@media (max-width: 1024px) {
  .hero-container {
    grid-template-columns: 1fr;
    text-align: center;
    gap: var(--space-2xl);
  }
  
  .hero-visual {
    order: -1;
    margin-bottom: var(--space-xl);
  }
}

/* Enhanced Badge */
.animated-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  background: linear-gradient(135deg, 
    rgba(99, 102, 241, 0.9), 
    rgba(139, 92, 246, 0.9)
  );
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.2);
  padding: var(--space-xs) var(--space-lg);
  border-radius: var(--radius-full);
  color: white;
  font-weight: 600;
  font-size: var(--text-sm);
  margin-bottom: var(--space-xl);
  position: relative;
  overflow: hidden;
  box-shadow: 0 8px 32px rgba(99, 102, 241, 0.3);
  animation: badge-float 3s ease-in-out infinite;
}

.animated-badge::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, 
    transparent, 
    rgba(255, 255, 255, 0.2), 
    transparent
  );
  transition: left 0.7s ease;
}

.animated-badge:hover::before {
  left: 100%;
}

.badge-dot {
  width: 8px;
  height: 8px;
  background: #10b981;
  border-radius: 50%;
  animation: pulse 2s infinite;
}

@keyframes badge-float {
  0%, 100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-5px);
  }
}

@keyframes pulse {
  0%, 100% {
    opacity: 1;
    transform: scale(1);
  }
  50% {
    opacity: 0.7;
    transform: scale(1.2);
  }
}

/* Hero Greeting */
.hero-greeting-wrapper {
  margin-bottom: var(--space-lg);
}

.hero-greeting {
  display: block;
  font-size: var(--text-2xl);
  color: var(--text-secondary);
  margin-bottom: var(--space-xs);
  font-weight: 500;
  opacity: 0;
  animation: fade-in 0.8s ease-out 0.2s forwards;
}

@media (max-width: 768px) {
  .hero-greeting {
    font-size: var(--text-xl);
  }
}

.name-highlight {
  position: relative;
  display: inline-block;
  margin-bottom: var(--space-lg);
}

.hero-name {
  display: flex;
  gap: var(--space-sm);
  margin-bottom: var(--space-xs);
  flex-wrap: wrap;
  justify-content: flex-start;
}

@media (max-width: 1024px) {
  .hero-name {
    justify-content: center;
  }
}

@media (max-width: 768px) {
  .hero-name {
    flex-direction: column;
    gap: 0;
    align-items: center;
  }
}

.name-part-1, .name-part-2 {
  display: inline-block;
  font-size: var(--text-7xl);
  font-weight: 800;
  background: linear-gradient(135deg, 
    var(--primary) 0%, 
    var(--primary-light) 30%, 
    var(--primary-ultralight) 100%
  );
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  position: relative;
}

@media (max-width: 1024px) {
  .name-part-1, .name-part-2 {
    font-size: var(--text-6xl);
  }
}

@media (max-width: 768px) {
  .name-part-1, .name-part-2 {
    font-size: var(--text-5xl);
  }
}

@media (max-width: 480px) {
  .name-part-1, .name-part-2 {
    font-size: var(--text-4xl);
  }
}

.name-part-1 {
  opacity: 0;
  animation: name-slide-left 1s ease-out 0.4s forwards;
}

.name-part-2 {
  opacity: 0;
  animation: name-slide-right 1s ease-out 0.6s forwards;
}

.name-underline {
  width: 100%;
  height: 4px;
  background: linear-gradient(90deg, 
    transparent, 
    var(--primary), 
    transparent
  );
  border-radius: var(--radius-full);
  margin-top: var(--space-xs);
  opacity: 0;
  animation: underline-grow 1s ease-out 0.8s forwards;
}

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

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

@keyframes underline-grow {
  from {
    width: 0;
    opacity: 0;
  }
  to {
    width: 100%;
    opacity: 1;
  }
}

@keyframes fade-in {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

/* Role Display */
.role-container {
  margin-bottom: var(--space-lg);
}

.role-rotating-container {
  display: flex;
  align-items: center;
  justify-content: flex-start;
  flex-wrap: wrap;
  gap: var(--space-xs);
  margin-bottom: var(--space-md);
}

@media (max-width: 1024px) {
  .role-rotating-container {
    justify-content: center;
  }
}

@media (max-width: 768px) {
  .role-rotating-container {
    flex-direction: column;
    gap: var(--space-2xs);
  }
}

.role-prefix {
  font-size: var(--text-2xl);
  font-weight: 600;
  color: var(--text-secondary);
}

.role-rotating {
  font-size: var(--text-4xl);
  font-weight: 800;
  color: var(--primary);
  min-width: 200px;
  text-align: center;
  position: relative;
}

@media (max-width: 768px) {
  .role-rotating {
    font-size: var(--text-3xl);
    min-width: 180px;
  }
}

@media (max-width: 480px) {
  .role-rotating {
    font-size: var(--text-2xl);
    min-width: 160px;
  }
}

.role-suffix {
  font-size: var(--text-3xl);
  font-weight: 700;
  color: var(--text-primary);
}

@media (max-width: 768px) {
  .role-suffix {
    font-size: var(--text-2xl);
  }
}

/* Hero Description */
.hero-description {
  font-size: var(--text-xl);
  color: var(--text-secondary);
  margin-bottom: var(--space-xl);
  line-height: var(--leading-relaxed);
  max-width: 500px;
  margin-left: 0;
  margin-right: 0;
  opacity: 0;
  animation: fade-in 0.8s ease-out 1.2s forwards;
}

@media (max-width: 1024px) {
  .hero-description {
    margin-left: auto;
    margin-right: auto;
    text-align: center;
  }
}

@media (max-width: 768px) {
  .hero-description {
    font-size: var(--text-lg);
  }
}

@media (max-width: 480px) {
  .hero-description {
    font-size: var(--text-base);
  }
}

/* Tech Stack Showcase */
.tech-stack-showcase {
  display: flex;
  flex-direction: column;
  gap: var(--space-lg);
  margin: var(--space-xl) 0;
  padding: var(--space-lg);
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  backdrop-filter: blur(10px);
}

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

.tech-category-header {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  color: var(--text-secondary);
  font-size: var(--text-sm);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

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

.tech-tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-xs);
}

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

.tech-tag:hover {
  background: var(--primary);
  color: white;
  border-color: var(--primary);
  transform: translateY(-2px);
}

.tech-tag.active {
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: white;
  border-color: var(--primary);
  box-shadow: var(--shadow-sm);
}

/* CTA Buttons */
.hero-actions {
  display: flex;
  gap: var(--space-md);
  margin-bottom: var(--space-2xl);
  opacity: 0;
  animation: fade-in 0.8s ease-out 1.6s forwards;
}

@media (max-width: 768px) {
  .hero-actions {
    flex-direction: column;
    align-items: stretch;
  }
}

.cta-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  padding: var(--space-md) var(--space-xl);
  border-radius: var(--radius-lg);
  font-size: var(--text-base);
  font-weight: 600;
  text-decoration: none;
  cursor: pointer;
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
  border: none;
}

.cta-button.primary {
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: white;
}

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

.cta-glow {
  position: relative;
  overflow: hidden;
  border: none;
  background: linear-gradient(135deg, 
    var(--primary) 0%, 
    var(--primary-dark) 100%
  );
  box-shadow: 0 10px 30px rgba(99, 102, 241, 0.4);
}

.cta-glow::before {
  content: '';
  position: absolute;
  top: -2px;
  left: -2px;
  right: -2px;
  bottom: -2px;
  background: linear-gradient(45deg, 
    #6366f1, #8b5cf6, #ec4899, #6366f1
  );
  border-radius: var(--radius-lg);
  z-index: -1;
  animation: glow-rotate 3s linear infinite;
  background-size: 400%;
}

.cta-glow::after {
  content: '';
  position: absolute;
  top: 2px;
  left: 2px;
  right: 2px;
  bottom: 2px;
  background: linear-gradient(135deg, 
    var(--primary) 0%, 
    var(--primary-dark) 100%
  );
  border-radius: calc(var(--radius-lg) - 2px);
  z-index: -1;
}

.cta-shine {
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: linear-gradient(
    to right,
    rgba(255, 255, 255, 0) 0%,
    rgba(255, 255, 255, 0.1) 50%,
    rgba(255, 255, 255, 0) 100%
  );
  transform: rotate(30deg);
  transition: left 0.7s ease;
}

.cta-glow:hover .cta-shine {
  left: 100%;
}

@keyframes glow-rotate {
  0% {
    background-position: 0% 50%;
  }
  50% {
    background-position: 100% 50%;
  }
  100% {
    background-position: 0% 50%;
  }
}

.cta-sparkle {
  position: relative;
  background: transparent;
  border: 2px solid var(--primary);
  color: var(--primary);
  overflow: hidden;
}

.cta-sparkle::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, 
    transparent, 
    rgba(99, 102, 241, 0.2), 
    transparent
  );
  transition: left 0.7s ease;
}

.cta-sparkle:hover::before {
  left: 100%;
}

.cta-text {
  position: relative;
  z-index: 1;
}

.cta-icon {
  position: relative;
  z-index: 1;
  transition: transform var(--transition-base);
}

.cta-glow:hover .cta-icon {
  transform: translateY(2px);
}

.cta-sparkle:hover .cta-icon {
  transform: translateX(2px);
}

/* Live Stats */
.social-proof-live {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-lg);
  margin-top: var(--space-xl);
  padding-top: var(--space-xl);
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  opacity: 0;
  animation: fade-in 0.8s ease-out 1.8s forwards;
}

@media (max-width: 1024px) {
  .social-proof-live {
    grid-template-columns: 1fr;
    gap: var(--space-md);
  }
}

.proof-card {
  background: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  padding: var(--space-lg);
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
  transition: all var(--transition-base);
  height: 100%;
}

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

.proof-icon {
  width: 48px;
  height: 48px;
  background: rgba(99, 102, 241, 0.1);
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary);
  font-size: var(--text-xl);
}

.proof-content {
  flex: 1;
}

.proof-number {
  font-size: var(--text-4xl);
  font-weight: 800;
  color: var(--primary);
  line-height: 1;
  margin-bottom: var(--space-xs);
}

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

.proof-bar {
  height: 4px;
  background: var(--bg-tertiary);
  border-radius: var(--radius-full);
  overflow: hidden;
}

.proof-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--primary), var(--primary-light));
  border-radius: var(--radius-full);
  transition: width 2s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Code Preview */
.code-preview {
  position: absolute;
  top: -20px;
  right: -20px;
  width: 200px;
  background: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-xl);
  z-index: 2;
  transform: rotate(3deg);
  opacity: 0;
  animation: code-preview-appear 0.6s ease 1.2s forwards;
}

@media (max-width: 1024px) {
  .code-preview {
    display: none;
  }
}

.code-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-sm);
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border-color);
}

.code-dots {
  display: flex;
  gap: var(--space-2xs);
}

.dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
}

.dot.red { background: #ef4444; }
.dot.yellow { background: #f59e0b; }
.dot.green { background: #10b981; }

.code-title {
  font-size: var(--text-xs);
  color: var(--text-secondary);
  font-weight: 500;
}

.code-content {
  padding: var(--space-sm);
  background: var(--bg-secondary);
}

.code-content pre {
  margin: 0;
  overflow: hidden;
}

.code-content code {
  font-family: 'Courier New', monospace;
  font-size: 10px;
  color: var(--primary-light);
  line-height: 1.4;
}

@keyframes code-preview-appear {
  to {
    opacity: 1;
    transform: rotate(3deg) translateY(0);
  }
}

/* Profile Visual */
.profile-3d-container {
  position: relative;
  max-width: 400px;
  margin: 0 auto;
  opacity: 0;
  animation: fade-in 0.8s ease-out 2s forwards;
}

@media (max-width: 768px) {
  .profile-3d-container {
    max-width: 300px;
  }
}

.profile-3d-card {
  position: relative;
  width: 100%;
  aspect-ratio: 1;
  border-radius: var(--radius-2xl);
  overflow: hidden;
  transform-style: preserve-3d;
  perspective: 1000px;
  box-shadow: 
    0 20px 40px rgba(0, 0, 0, 0.3),
    0 0 60px rgba(99, 102, 241, 0.2);
  transition: transform var(--transition-base);
}

.profile-3d-card:hover {
  transform: rotateY(5deg) rotateX(5deg) translateY(-10px);
}

.profile-glare {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(
    45deg,
    transparent 30%,
    rgba(255, 255, 255, 0.1) 50%,
    transparent 70%
  );
  z-index: 1;
  pointer-events: none;
}

.profile-3d {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  border-radius: var(--radius-xl);
  transform: translateZ(20px);
  background: var(--bg-tertiary);
}

.profile-badge {
  position: absolute;
  top: var(--space-md);
  right: var(--space-md);
  background: linear-gradient(135deg, #f59e0b, #d97706);
  color: white;
  padding: var(--space-2xs) var(--space-md);
  border-radius: var(--radius-full);
  font-size: var(--text-xs);
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: var(--space-2xs);
  z-index: 2;
  box-shadow: var(--shadow-md);
}

/* Profile Stats */
.profile-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-sm);
  margin-top: var(--space-lg);
}

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

.profile-stat {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  background: var(--bg-secondary);
  padding: var(--space-sm);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-color);
  transition: all var(--transition-fast);
}

.profile-stat:hover {
  background: var(--bg-tertiary);
  border-color: var(--primary);
}

.profile-stat i {
  font-size: var(--text-lg);
  color: var(--primary);
}

.profile-stat div {
  display: flex;
  flex-direction: column;
}

.stat-value {
  font-size: var(--text-sm);
  font-weight: 700;
  color: var(--text-primary);
}

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

/* ============================================
   ABOUT SECTION
============================================ */
.philosophy-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: var(--space-xl);
  margin-bottom: var(--space-3xl);
}

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

.principle-card {
  background: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-2xl);
  padding: var(--space-xl);
  transition: all var(--transition-base);
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
  position: relative;
  overflow: hidden;
}

.principle-card:hover {
  transform: translateY(-8px);
  border-color: var(--primary);
  box-shadow: var(--shadow-xxl);
}

.principle-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 4px;
  height: 100%;
  background: linear-gradient(to bottom, var(--primary), var(--primary-light));
  opacity: 0;
  transition: opacity var(--transition-base);
}

.principle-card:hover::before {
  opacity: 1;
}

.principle-header {
  display: flex;
  align-items: flex-start;
  gap: var(--space-md);
  margin-bottom: var(--space-md);
}

.principle-icon {
  width: 56px;
  height: 56px;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: var(--text-xl);
  flex-shrink: 0;
}

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

.principle-description {
  color: var(--text-secondary);
  line-height: var(--leading-relaxed);
  margin-bottom: var(--space-md);
}

.principle-bullets {
  list-style: none;
  padding: 0;
  margin: var(--space-md) 0;
}

.principle-bullets li {
  color: var(--text-secondary);
  margin-bottom: var(--space-sm);
  padding-left: var(--space-md);
  position: relative;
  display: flex;
  align-items: flex-start;
  gap: var(--space-sm);
}

.principle-bullets li::before {
  content: '→';
  color: var(--primary);
  position: absolute;
  left: 0;
  font-weight: bold;
}

.principle-bullets strong {
  color: var(--text-primary);
  font-weight: 600;
}

.principle-metrics {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
  margin-top: var(--space-md);
}

.metric {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  background: var(--bg-tertiary);
  padding: var(--space-xs) var(--space-md);
  border-radius: var(--radius-full);
  color: var(--text-secondary);
  font-size: var(--text-xs);
  font-weight: 500;
}

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

.principle-tech {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-xs);
  margin-top: var(--space-md);
}

.principle-tech span {
  background: rgba(99, 102, 241, 0.1);
  color: var(--primary);
  font-size: var(--text-xs);
  font-weight: 600;
  padding: var(--space-2xs) var(--space-sm);
  border-radius: var(--radius-full);
}

.principle-results {
  display: flex;
  gap: var(--space-lg);
  margin-top: var(--space-md);
  justify-content: space-between;
}

@media (max-width: 480px) {
  .principle-results {
    flex-direction: column;
    gap: var(--space-md);
  }
}

.result {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  flex: 1;
}

.result-value {
  font-size: var(--text-2xl);
  font-weight: 800;
  color: var(--primary);
  margin-bottom: var(--space-2xs);
}

.result-label {
  font-size: var(--text-xs);
  color: var(--text-secondary);
  font-weight: 500;
}

/* Enhanced Timeline */
.experience-timeline {
  max-width: 900px;
  margin: 0 auto;
}

.timeline-title {
  font-size: var(--text-3xl);
  font-weight: 700;
  margin-bottom: var(--space-2xl);
  text-align: center;
  color: var(--text-primary);
}

@media (max-width: 768px) {
  .timeline-title {
    font-size: var(--text-2xl);
  }
}

.timeline-item {
  display: grid;
  grid-template-columns: 140px 1fr;
  gap: var(--space-xl);
  margin-bottom: var(--space-2xl);
  position: relative;
  padding: var(--space-lg) 0;
}

@media (max-width: 768px) {
  .timeline-item {
    grid-template-columns: 1fr;
    gap: var(--space-md);
  }
  
  .timeline-item::before {
    display: none;
  }
}

.timeline-item::before {
  content: '';
  position: absolute;
  left: 135px;
  top: 0;
  bottom: 0;
  width: 2px;
  background: linear-gradient(to bottom, 
    transparent, 
    var(--primary) 20%, 
    var(--primary) 80%, 
    transparent
  );
}

.timeline-date {
  position: relative;
  z-index: 2;
  font-size: var(--text-sm);
  font-weight: 700;
  color: var(--primary);
  background: var(--bg-primary);
  padding: var(--space-sm) var(--space-md);
  border: 2px solid var(--primary);
  border-radius: var(--radius-full);
  height: fit-content;
  text-align: center;
  box-shadow: var(--shadow-md);
}

.timeline-content {
  background: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  padding: var(--space-xl);
  position: relative;
  box-shadow: var(--shadow-md);
}

.timeline-content::before {
  content: '';
  position: absolute;
  left: -20px;
  top: 50%;
  transform: translateY(-50%);
  width: 20px;
  height: 2px;
  background: var(--primary);
}

@media (max-width: 768px) {
  .timeline-content::before {
    display: none;
  }
}

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

.timeline-company {
  font-size: var(--text-lg);
  font-weight: 700;
  color: var(--text-primary);
}

.timeline-role {
  font-size: var(--text-base);
  color: var(--primary);
  font-weight: 600;
  background: rgba(99, 102, 241, 0.1);
  padding: var(--space-xs) var(--space-md);
  border-radius: var(--radius-full);
}

.timeline-description {
  color: var(--text-secondary);
  font-size: var(--text-base);
  margin-bottom: var(--space-lg);
  line-height: var(--leading-relaxed);
}

.timeline-achievements {
  list-style: none;
  margin: var(--space-lg) 0;
  padding: 0;
}

.timeline-achievements li {
  color: var(--text-secondary);
  margin-bottom: var(--space-sm);
  padding-left: var(--space-md);
  position: relative;
  display: flex;
  align-items: flex-start;
  gap: var(--space-sm);
}

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

.timeline-achievements strong {
  color: var(--text-primary);
  font-weight: 600;
}

.timeline-tech {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-xs);
  margin-top: var(--space-lg);
  padding-top: var(--space-lg);
  border-top: 1px solid var(--border-color);
}

.timeline-tech span {
  background: var(--bg-tertiary);
  color: var(--text-secondary);
  font-size: var(--text-xs);
  padding: var(--space-2xs) var(--space-sm);
  border-radius: var(--radius-full);
  border: 1px solid var(--border-color);
  font-weight: 500;
}

/* ============================================
   PROJECTS SECTION
============================================ */
.projects {
  padding: var(--space-3xl) 0;
  background: var(--bg-primary);
  position: relative;
}

.projects::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 100%;
  background: radial-gradient(circle at 30% 70%, rgba(99, 102, 241, 0.05) 0%, transparent 50%);
  pointer-events: none;
}

.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(380px, 1fr));
  gap: var(--space-xl);
  position: relative;
  z-index: 1;
}

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

.project-card {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-2xl);
  overflow: hidden;
  transition: all var(--transition-base);
  position: relative;
  display: flex;
  flex-direction: column;
  height: 100%;
}

.project-card:hover {
  transform: translateY(-12px);
  box-shadow: var(--shadow-xxl);
  border-color: rgba(99, 102, 241, 0.3);
}

.project-visual {
  position: relative;
  overflow: hidden;
  flex: 0 0 auto;
}

.project-image-container {
  position: relative;
  width: 100%;
  padding-bottom: 66.67%; /* 3:2 aspect ratio */
  overflow: hidden;
}

.project-image-container img {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-slow);
}

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

.project-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(10, 10, 10, 0.95) 0%, transparent 50%);
  display: flex;
  align-items: flex-end;
  padding: var(--space-lg);
  opacity: 0;
  transition: opacity var(--transition-base);
}

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

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

.project-tech span {
  background: rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(8px);
  color: white;
  font-size: var(--text-xs);
  font-weight: 600;
  padding: var(--space-2xs) var(--space-sm);
  border-radius: var(--radius-full);
  border: 1px solid rgba(255, 255, 255, 0.2);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.project-content {
  padding: var(--space-xl);
  display: flex;
  flex-direction: column;
  flex: 1;
}

.project-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: var(--space-lg);
  flex-wrap: wrap;
  gap: var(--space-sm);
}

.project-header h3 {
  font-size: var(--text-2xl);
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: -0.01em;
}

.project-type {
  font-size: var(--text-xs);
  font-weight: 600;
  color: var(--primary);
  background: rgba(99, 102, 241, 0.1);
  padding: var(--space-2xs) var(--space-sm);
  border-radius: var(--radius-full);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.project-description {
  color: var(--text-secondary);
  line-height: var(--leading-relaxed);
  margin-bottom: var(--space-xl);
  flex: 1;
}

/* Project Impact */
.project-impact {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-md);
  margin: var(--space-lg) 0;
  padding: var(--space-md);
  background: var(--bg-tertiary);
  border-radius: var(--radius-lg);
}

@media (max-width: 480px) {
  .project-impact {
    grid-template-columns: 1fr;
  }
}

.impact-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
}

.impact-value {
  font-size: var(--text-2xl);
  font-weight: 800;
  color: var(--primary);
  margin-bottom: var(--space-xs);
}

.impact-label {
  font-size: var(--text-xs);
  color: var(--text-secondary);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.project-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: var(--space-lg);
  padding-top: var(--space-lg);
  border-top: 1px solid var(--border-color);
  flex-wrap: wrap;
  gap: var(--space-md);
}

@media (max-width: 768px) {
  .project-meta {
    flex-direction: column;
    align-items: stretch;
    text-align: center;
  }
}

.project-stack {
  display: flex;
  gap: var(--space-xs);
  flex-wrap: wrap;
}

@media (max-width: 768px) {
  .project-stack {
    justify-content: center;
  }
}

.project-stack span {
  font-size: var(--text-xs);
  color: var(--text-secondary);
  background: var(--bg-tertiary);
  padding: var(--space-2xs) var(--space-sm);
  border-radius: var(--radius-full);
}

.project-link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  color: var(--primary);
  text-decoration: none;
  font-weight: 600;
  transition: all var(--transition-base);
}

.project-link:hover {
  gap: var(--space-md);
  color: var(--primary-light);
}

.project-link i {
  font-size: var(--text-sm);
  transition: transform var(--transition-base);
}

.project-link:hover i {
  transform: translateX(4px) translateY(-4px);
}

/* ============================================
   CONTACT SECTION
============================================ */
.contact {
  padding: var(--space-3xl) 0;
  background: var(--bg-secondary);
  position: relative;
}

.contact::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 100%;
  background: radial-gradient(circle at 70% 70%, rgba(99, 102, 241, 0.05) 0%, transparent 50%);
  pointer-events: none;
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: var(--space-3xl);
  max-width: 1200px;
  margin: 0 auto;
  position: relative;
  z-index: 1;
}

@media (max-width: 1024px) {
  .contact-grid {
    grid-template-columns: 1fr;
    gap: var(--space-2xl);
  }
}

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

.contact-card {
  display: flex;
  align-items: flex-start;
  gap: var(--space-lg);
  padding: var(--space-xl);
  background: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-2xl);
  transition: all var(--transition-base);
}

@media (max-width: 480px) {
  .contact-card {
    flex-direction: column;
    text-align: center;
    align-items: center;
  }
}

.contact-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-xl);
  border-color: rgba(99, 102, 241, 0.3);
}

.contact-icon {
  width: 56px;
  height: 56px;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  box-shadow: var(--shadow-md);
}

.contact-icon i {
  font-size: var(--text-xl);
  color: white;
}

.contact-details {
  flex: 1;
}

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

.contact-link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  color: var(--primary);
  text-decoration: none;
  font-size: var(--text-base);
  font-weight: 500;
  transition: color var(--transition-fast);
  margin-bottom: var(--space-xs);
}

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

.contact-response,
.contact-timezone,
.contact-size {
  font-size: var(--text-sm);
  color: var(--text-tertiary);
  font-weight: 500;
  display: flex;
  align-items: center;
  gap: var(--space-xs);
}

@media (max-width: 480px) {
  .contact-response,
  .contact-timezone,
  .contact-size {
    justify-content: center;
  }
}

.social-links {
  display: flex;
  gap: var(--space-md);
  margin-top: var(--space-lg);
  flex-wrap: wrap;
}

.social-link {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  color: var(--text-secondary);
  text-decoration: none;
  font-size: var(--text-sm);
  font-weight: 500;
  transition: all var(--transition-fast);
  padding: var(--space-sm) var(--space-md);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-color);
  background: var(--bg-primary);
  flex: 1;
  min-width: 140px;
  justify-content: center;
}

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

.social-link i {
  font-size: var(--text-lg);
}

/* Contact Form */
.contact-form-container {
  background: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-2xl);
  padding: var(--space-2xl);
  box-shadow: var(--shadow-xl);
}

.form-trust {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  margin-bottom: var(--space-xl);
  padding: var(--space-md);
  background: rgba(16, 185, 129, 0.1);
  border-radius: var(--radius-lg);
  color: var(--accent-success);
  font-size: var(--text-sm);
}

.form-trust i {
  font-size: var(--text-lg);
}

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

.form-group label {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: var(--space-sm);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.form-group label i {
  color: var(--primary);
  font-size: var(--text-sm);
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: var(--space-md);
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  color: var(--text-primary);
  font-size: var(--text-base);
  font-family: var(--font-sans);
  transition: all var(--transition-fast);
  resize: vertical;
}

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

.form-group input::placeholder,
.form-group textarea::placeholder {
  color: var(--text-tertiary);
  opacity: 0.7;
}

.error {
  display: block;
  font-size: var(--text-sm);
  color: var(--accent-error);
  margin-top: var(--space-xs);
  min-height: 20px;
  font-weight: 500;
  opacity: 0;
  transition: opacity var(--transition-fast);
}

.error:not(:empty) {
  opacity: 1;
}

.form-microcopy {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  margin: var(--space-lg) 0;
  padding: var(--space-sm);
  background: rgba(59, 130, 246, 0.1);
  border-radius: var(--radius-lg);
  color: var(--accent-info);
  font-size: var(--text-sm);
}

.form-microcopy i {
  color: var(--accent-info);
}

.submit-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  padding: var(--space-md) var(--space-xl);
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: white;
  font-size: var(--text-base);
  font-weight: 600;
  border: none;
  border-radius: var(--radius-lg);
  cursor: pointer;
  transition: all var(--transition-base);
  width: 100%;
  position: relative;
  overflow: hidden;
  isolation: isolate;
}

.submit-button::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(135deg, var(--primary-dark), var(--primary));
  z-index: -1;
  opacity: 0;
  transition: opacity var(--transition-base);
}

.submit-button:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-xl);
}

.submit-button:hover::before {
  opacity: 1;
}

.submit-button:active {
  transform: translateY(0);
}

/* ============================================
   FOOTER
============================================ */
.footer {
  padding: var(--space-3xl) 0 var(--space-xl);
  background: var(--bg-primary);
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  position: relative;
}

.footer::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--primary), transparent);
  opacity: 0.5;
}

.footer-content {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: var(--space-2xl);
  flex-wrap: wrap;
  gap: var(--space-xl);
}

@media (max-width: 768px) {
  .footer-content {
    flex-direction: column;
    text-align: center;
  }
}

.footer-brand {
  flex: 1;
  min-width: 300px;
}

@media (max-width: 768px) {
  .footer-brand {
    min-width: auto;
  }
}

.footer-brand .footer-logo {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  text-decoration: none;
  margin-bottom: var(--space-lg);
}

@media (max-width: 768px) {
  .footer-brand .footer-logo {
    justify-content: center;
  }
}

.footer-tagline {
  color: var(--text-secondary);
  font-size: var(--text-lg);
  line-height: var(--leading-relaxed);
  max-width: 400px;
  font-weight: 400;
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  margin: var(--space-md) 0;
}

@media (max-width: 768px) {
  .footer-tagline {
    justify-content: center;
    max-width: none;
  }
}

.footer-tagline i {
  color: var(--primary);
  opacity: 0.5;
}

.footer-tech {
  display: flex;
  gap: var(--space-md);
  margin: var(--space-lg) 0;
  flex-wrap: wrap;
}

@media (max-width: 768px) {
  .footer-tech {
    justify-content: center;
  }
}

.tech-stack-item {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  background: var(--bg-secondary);
  padding: var(--space-xs) var(--space-md);
  border-radius: var(--radius-full);
  color: var(--text-secondary);
  font-size: var(--text-sm);
  font-weight: 500;
  transition: all var(--transition-fast);
}

.tech-stack-item:hover {
  background: var(--primary);
  color: white;
  transform: translateY(-2px);
}

.tech-stack-item i {
  font-size: var(--text-lg);
}

.footer-links {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-2xl);
}

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

.footer-column h4 {
  font-size: var(--text-lg);
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: var(--space-md);
}

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

.footer-link {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: var(--text-sm);
  font-weight: 500;
  transition: color var(--transition-fast);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

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

.footer-bottom {
  text-align: center;
  padding-top: var(--space-xl);
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.footer-bottom p {
  color: var(--text-tertiary);
  font-size: var(--text-sm);
  margin-bottom: var(--space-xs);
}

.footer-note {
  color: var(--text-secondary);
  font-size: var(--text-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-xs);
}

.footer-note i {
  color: var(--accent-error);
  animation: heartbeat 1.5s infinite;
}

.footer-github {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  color: var(--text-secondary);
  font-size: var(--text-sm);
  margin-top: var(--space-md);
}

.footer-github i {
  color: var(--primary);
  font-size: var(--text-lg);
}

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

/* ============================================
   BACK TO TOP
============================================ */
.back-to-top {
  position: fixed;
  bottom: var(--space-xl);
  right: var(--space-xl);
  width: 56px;
  height: 56px;
  background: var(--primary);
  color: white;
  border: none;
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transform: translateY(20px) scale(0.9);
  transition: all var(--transition-base);
  z-index: var(--z-30);
  box-shadow: var(--shadow-xl);
}

@media (max-width: 768px) {
  .back-to-top {
    bottom: var(--space-lg);
    right: var(--space-lg);
    width: 48px;
    height: 48px;
  }
}

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

.back-to-top:hover {
  background: var(--primary-dark);
  transform: translateY(-4px) scale(1.05);
  box-shadow: var(--shadow-xxl);
}

.back-to-top:active {
  transform: translateY(-2px) scale(1);
}

/* ============================================
   ANIMATIONS & UTILITIES
============================================ */
@keyframes fade-up {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

[data-animate="fade-up"] {
  opacity: 0;
  animation: fade-up 0.6s var(--transition-base) forwards;
}

[data-animate="fade-up"][data-delay="100"] {
  animation-delay: 0.1s;
}

[data-animate="fade-up"][data-delay="200"] {
  animation-delay: 0.2s;
}

[data-animate="fade-up"][data-delay="300"] {
  animation-delay: 0.3s;
}

[data-animate="fade-up"][data-delay="400"] {
  animation-delay: 0.4s;
}

/* Smooth scrolling for anchor links */
@media (prefers-reduced-motion: no-preference) {
  html {
    scroll-behavior: smooth;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  
  [data-animate] {
    animation: none !important;
    opacity: 1 !important;
    transform: none !important;
  }
}

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

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

.shadow-glow {
  box-shadow: 0 0 20px rgba(99, 102, 241, 0.3);
}

/* Custom Scrollbar */
@media (min-width: 768px) {
  ::-webkit-scrollbar {
    width: 10px;
  }
  
  ::-webkit-scrollbar-track {
    background: var(--bg-primary);
  }
  
  ::-webkit-scrollbar-thumb {
    background: var(--primary);
    border-radius: var(--radius-full);
  }
  
  ::-webkit-scrollbar-thumb:hover {
    background: var(--primary-light);
  }
  
  /* Firefox */
  * {
    scrollbar-width: thin;
    scrollbar-color: var(--primary) var(--bg-primary);
  }
}

/* Image optimization */
img {
  image-rendering: -webkit-optimize-contrast;
  image-rendering: crisp-edges;
  max-width: 100%;
  height: auto;
}

/* Print styles */
@media print {
  .navbar,
  .hero-actions,
  .contact-form-container,
  .back-to-top,
  .social-links,
  .footer-note,
  .footer-github {
    display: none !important;
  }
  
  body {
    background: white !important;
    color: black !important;
    font-size: 12pt !important;
  }
  
  .hero,
  .about,
  .projects,
  .contact {
    padding: 1rem 0 !important;
  }
  
  .container {
    max-width: 100% !important;
    padding: 0 1rem !important;
  }
  
  .section-title {
    -webkit-text-fill-color: black !important;
    color: black !important;
  }
  
  .profile-3d {
    filter: grayscale(100%) !important;
  }
  
  a {
    color: black !important;
    text-decoration: underline !important;
  }
  
  .project-card,
  .principle-card,
  .contact-card {
    break-inside: avoid;
    border: 1px solid #000 !important;
    box-shadow: none !important;
  }
}