:root {
  /* Primitive Color Tokens */
  --color-white: rgba(255, 255, 255, 1);
  --color-black: rgba(0, 0, 0, 1);
  --color-cream-50: rgba(252, 252, 249, 1);
  --color-cream-100: rgba(255, 255, 253, 1);
  --color-gray-200: rgba(245, 245, 245, 1);
  --color-gray-300: rgba(167, 169, 169, 1);
  --color-gray-400: rgba(119, 124, 124, 1);
  --color-slate-500: rgba(98, 108, 113, 1);
  --color-brown-600: rgba(94, 82, 64, 1);
  --color-charcoal-700: rgba(31, 33, 33, 1);
  --color-charcoal-800: rgba(38, 40, 40, 1);
  --color-slate-900: rgba(19, 52, 59, 1);
  --color-teal-300: rgba(50, 184, 198, 1);
  --color-teal-400: rgba(45, 166, 178, 1);
  --color-teal-500: rgba(33, 128, 141, 1);
  --color-teal-600: rgba(29, 116, 128, 1);
  --color-teal-700: rgba(26, 104, 115, 1);
  --color-teal-800: rgba(41, 150, 161, 1);
  --color-red-400: rgba(255, 84, 89, 1);
  --color-red-500: rgba(192, 21, 47, 1);
  --color-orange-400: rgba(230, 129, 97, 1);
  --color-orange-500: rgba(168, 75, 47, 1);

  /* RGB versions for opacity control */
  --color-brown-600-rgb: 94, 82, 64;
  --color-teal-500-rgb: 33, 128, 141;
  --color-slate-900-rgb: 19, 52, 59;
  --color-slate-500-rgb: 98, 108, 113;
  --color-red-500-rgb: 192, 21, 47;
  --color-red-400-rgb: 255, 84, 89;
  --color-orange-500-rgb: 168, 75, 47;
  --color-orange-400-rgb: 230, 129, 97;

  /* Enhanced Background Gradient Tokens */
  --gradient-hero: linear-gradient(135deg, rgba(59, 130, 246, 0.1) 0%, rgba(147, 51, 234, 0.05) 100%);
  --gradient-about: linear-gradient(135deg, rgba(245, 158, 11, 0.08) 0%, rgba(249, 115, 22, 0.05) 100%);
  --gradient-skills: linear-gradient(135deg, rgba(34, 197, 94, 0.08) 0%, rgba(6, 182, 212, 0.05) 100%);
  --gradient-projects: linear-gradient(135deg, rgba(239, 68, 68, 0.08) 0%, rgba(236, 72, 153, 0.05) 100%);
  --gradient-contact: linear-gradient(135deg, rgba(147, 51, 234, 0.08) 0%, rgba(59, 130, 246, 0.05) 100%);
  
  /* Glassmorphism effects */
  --glass-bg: rgba(255, 255, 255, 0.1);
  --glass-border: rgba(255, 255, 255, 0.2);
  --glass-backdrop: blur(20px);

  /* Semantic Color Tokens (Light Mode) */
  --color-background: var(--color-cream-50);
  --color-surface: var(--color-cream-100);
  --color-text: var(--color-slate-900);
  --color-text-secondary: var(--color-slate-500);
  --color-primary: var(--color-teal-500);
  --color-primary-hover: var(--color-teal-600);
  --color-primary-active: var(--color-teal-700);
  --color-secondary: rgba(var(--color-brown-600-rgb), 0.12);
  --color-secondary-hover: rgba(var(--color-brown-600-rgb), 0.2);
  --color-secondary-active: rgba(var(--color-brown-600-rgb), 0.25);
  --color-border: rgba(var(--color-brown-600-rgb), 0.2);
  --color-btn-primary-text: var(--color-cream-50);
  --color-card-border: rgba(var(--color-brown-600-rgb), 0.12);
  --color-card-border-inner: rgba(var(--color-brown-600-rgb), 0.12);
  --color-error: var(--color-red-500);
  --color-success: var(--color-teal-500);
  --color-warning: var(--color-orange-500);
  --color-info: var(--color-slate-500);
  --color-focus-ring: rgba(var(--color-teal-500-rgb), 0.4);
  --color-select-caret: rgba(var(--color-slate-900-rgb), 0.8);

  /* Typography with better scaling */
  --font-family-base: "Inter", "FKGroteskNeue", "Geist", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-family-mono: "JetBrains Mono", "Berkeley Mono", ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  --font-size-xs: clamp(12px, 2.5vw, 14px);
  --font-size-sm: clamp(14px, 3vw, 16px);
  --font-size-base: clamp(16px, 3.5vw, 18px);
  --font-size-md: clamp(16px, 3.5vw, 18px);
  --font-size-lg: clamp(18px, 4vw, 20px);
  --font-size-xl: clamp(20px, 4.5vw, 24px);
  --font-size-2xl: clamp(24px, 5vw, 28px);
  --font-size-3xl: clamp(28px, 6vw, 32px);
  --font-size-4xl: clamp(32px, 8vw, 48px);
  --font-weight-normal: 400;
  --font-weight-medium: 500;
  --font-weight-semibold: 600;
  --font-weight-bold: 700;
  --line-height-tight: 1.2;
  --line-height-normal: 1.6;
  --letter-spacing-tight: -0.02em;
  --letter-spacing-wide: 0.05em;

  /* Enhanced Spacing System */
  --space-0: 0;
  --space-1: 1px;
  --space-2: 2px;
  --space-4: 4px;
  --space-6: 6px;
  --space-8: 8px;
  --space-10: 10px;
  --space-12: 12px;
  --space-16: 16px;
  --space-20: 20px;
  --space-24: 24px;
  --space-32: 32px;
  --space-40: 40px;
  --space-48: 48px;
  --space-64: 64px;
  --space-80: 80px;
  --space-96: 96px;
  --space-128: 128px;

  /* Enhanced Border Radius */
  --radius-xs: 4px;
  --radius-sm: 6px;
  --radius-base: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-2xl: 32px;
  --radius-full: 9999px;

  /* Enhanced Shadows with depth */
  --shadow-xs: 0 1px 2px rgba(0, 0, 0, 0.05);
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.1), 0 1px 2px rgba(0, 0, 0, 0.06);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
  --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
  --shadow-inner: inset 0 2px 4px 0 rgba(0, 0, 0, 0.06);
  --shadow-glow: 0 0 20px rgba(var(--color-teal-500-rgb), 0.3);
  --shadow-colored: 0 10px 15px -3px rgba(var(--color-teal-500-rgb), 0.1);

  /* Enhanced Animation System */
  --duration-instant: 0ms;
  --duration-fast: 150ms;
  --duration-normal: 250ms;
  --duration-slow: 350ms;
  --duration-slower: 500ms;
  --ease-linear: linear;
  --ease-in: cubic-bezier(0.4, 0, 1, 1);
  --ease-out: cubic-bezier(0, 0, 0.2, 1);
  --ease-in-out: cubic-bezier(0.4, 0, 0.2, 1);
  --ease-elastic: cubic-bezier(0.68, -0.55, 0.265, 1.55);
  --ease-bounce: cubic-bezier(0.68, -0.6, 0.32, 1.6);
  --ease-standard: cubic-bezier(0.16, 1, 0.3, 1);

  /* Layout */
  --container-sm: 640px;
  --container-md: 768px;
  --container-lg: 1024px;
  --container-xl: 1280px;
  --container-2xl: 1536px;

  /* Grid System */
  --grid-gap: var(--space-24);
  --grid-gap-sm: var(--space-16);
  --grid-gap-lg: var(--space-32);

  /* Z-index scale */
  --z-dropdown: 1000;
  --z-sticky: 1020;
  --z-fixed: 1030;
  --z-modal-backdrop: 1040;
  --z-modal: 1050;
  --z-popover: 1060;
  --z-tooltip: 1070;
  --z-toast: 1080;
}

/* Dark mode colors */
@media (prefers-color-scheme: dark) {
  :root {
    --color-gray-400-rgb: 119, 124, 124;
    --color-teal-300-rgb: 50, 184, 198;
    --color-gray-300-rgb: 167, 169, 169;
    --color-gray-200-rgb: 245, 245, 245;

    /* Dark mode gradients */
    --gradient-hero: linear-gradient(135deg, rgba(29, 78, 216, 0.2) 0%, rgba(107, 33, 168, 0.1) 100%);
    --gradient-about: linear-gradient(135deg, rgba(180, 83, 9, 0.15) 0%, rgba(194, 65, 12, 0.1) 100%);
    --gradient-skills: linear-gradient(135deg, rgba(21, 128, 61, 0.15) 0%, rgba(8, 145, 178, 0.1) 100%);
    --gradient-projects: linear-gradient(135deg, rgba(185, 28, 28, 0.15) 0%, rgba(190, 24, 93, 0.1) 100%);
    --gradient-contact: linear-gradient(135deg, rgba(107, 33, 168, 0.15) 0%, rgba(29, 78, 216, 0.1) 100%);
    
    /* Dark glassmorphism */
    --glass-bg: rgba(0, 0, 0, 0.2);
    --glass-border: rgba(255, 255, 255, 0.1);
    
    /* Semantic Color Tokens (Dark Mode) */
    --color-background: var(--color-charcoal-700);
    --color-surface: var(--color-charcoal-800);
    --color-text: var(--color-gray-200);
    --color-text-secondary: rgba(var(--color-gray-300-rgb), 0.7);
    --color-primary: var(--color-teal-300);
    --color-primary-hover: var(--color-teal-400);
    --color-primary-active: var(--color-teal-800);
    --color-secondary: rgba(var(--color-gray-400-rgb), 0.15);
    --color-secondary-hover: rgba(var(--color-gray-400-rgb), 0.25);
    --color-secondary-active: rgba(var(--color-gray-400-rgb), 0.3);
    --color-border: rgba(var(--color-gray-400-rgb), 0.3);
    --color-error: var(--color-red-400);
    --color-success: var(--color-teal-300);
    --color-warning: var(--color-orange-400);
    --color-info: var(--color-gray-300);
    --color-focus-ring: rgba(var(--color-teal-300-rgb), 0.4);
    --color-btn-primary-text: var(--color-slate-900);
    --color-card-border: rgba(var(--color-gray-400-rgb), 0.2);
    --color-card-border-inner: rgba(var(--color-gray-400-rgb), 0.15);
    --color-select-caret: rgba(var(--color-gray-200-rgb), 0.8);

    /* Dark mode shadows */
    --shadow-glow: 0 0 20px rgba(var(--color-teal-300-rgb), 0.3);
    --shadow-colored: 0 10px 15px -3px rgba(var(--color-teal-300-rgb), 0.1);
  }
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
  scroll-padding-top: 80px;
}

body {
  font-family: var(--font-family-base);
  line-height: var(--line-height-normal);
  color: var(--color-text);
  background-color: var(--color-background);
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

/* Enhanced Typography */
h1, h2, h3, h4, h5, h6 {
  font-weight: var(--font-weight-semibold);
  margin-bottom: var(--space-16);
  color: var(--color-text);
  letter-spacing: var(--letter-spacing-tight);
  line-height: var(--line-height-tight);
}

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

p {
  margin-bottom: var(--space-16);
  color: var(--color-text-secondary);
  max-width: 65ch;
}

a {
  color: var(--color-primary);
  text-decoration: none;
  transition: all var(--duration-fast) var(--ease-standard);
  position: relative;
}

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

/* Enhanced Button System */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-8);
  padding: var(--space-12) var(--space-24);
  border-radius: var(--radius-md);
  text-decoration: none;
  font-weight: var(--font-weight-medium);
  font-size: var(--font-size-base);
  font-family: var(--font-family-base);
  line-height: 1;
  cursor: pointer;
  border: none;
  position: relative;
  overflow: hidden;
  transition: all var(--duration-normal) var(--ease-standard);
  text-align: center;
  user-select: none;
  white-space: nowrap;
}

.btn::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 var(--duration-slow) var(--ease-standard);
}

.btn:hover::before {
  left: 100%;
}

.btn-primary {
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-hover));
  color: var(--color-btn-primary-text);
  box-shadow: var(--shadow-md);
}

.btn-primary:hover {
  background: linear-gradient(135deg, var(--color-primary-hover), var(--color-primary-active));
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.btn-primary:active {
  transform: translateY(0);
  box-shadow: var(--shadow-md);
}

.btn-secondary {
  background: var(--color-surface);
  color: var(--color-text);
  border: 2px solid var(--color-border);
  box-shadow: var(--shadow-sm);
}

.btn-secondary:hover {
  background: var(--color-secondary);
  border-color: var(--color-primary);
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

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

.btn-outline:hover {
  background: var(--color-primary);
  color: var(--color-btn-primary-text);
  border-color: var(--color-primary);
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

.btn:focus-visible {
  outline: none;
  box-shadow: var(--focus-ring);
}

.btn-full-width {
  width: 100%;
}

/* Enhanced Navigation */
.navbar {
  position: fixed;
  top: 0;
  width: 100%;
  background: rgba(var(--color-surface), 0.95);
  backdrop-filter: var(--glass-backdrop);
  z-index: var(--z-fixed);
  padding: var(--space-16) 0;
  transition: all var(--duration-normal) var(--ease-standard);
  border-bottom: 1px solid var(--color-border);
}

.navbar.scrolled {
  padding: var(--space-12) 0;
  background: rgba(var(--color-surface), 0.98);
  box-shadow: var(--shadow-lg);
}

.nav-container {
  max-width: var(--container-xl);
  margin: 0 auto;
  padding: 0 var(--space-20);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.status-indicator {
  background: linear-gradient(135deg, var(--color-success), var(--color-teal-600));
  color: var(--color-btn-primary-text);
  padding: var(--space-8) var(--space-16);
  border-radius: var(--radius-full);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  box-shadow: var(--shadow-sm);
  animation: pulse 2s infinite;
}

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

.nav-menu {
  display: flex;
  gap: var(--space-32);
}

.nav-link {
  text-decoration: none;
  color: var(--color-text);
  font-weight: var(--font-weight-medium);
  transition: all var(--duration-normal) var(--ease-standard);
  position: relative;
  padding: var(--space-8) var(--space-4);
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  width: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--color-primary), var(--color-primary-hover));
  transition: all var(--duration-normal) var(--ease-standard);
  transform: translateX(-50%);
  border-radius: var(--radius-full);
}

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

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

.hamburger {
  display: none;
  flex-direction: column;
  cursor: pointer;
  padding: var(--space-8);
  border-radius: var(--radius-sm);
  transition: background var(--duration-normal) var(--ease-standard);
}

.hamburger:hover {
  background: var(--color-secondary);
}

.hamburger .bar {
  width: 25px;
  height: 3px;
  background: var(--color-text);
  margin: 3px 0;
  transition: var(--duration-normal) var(--ease-standard);
  border-radius: var(--radius-full);
}

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

.hamburger.active .bar:nth-child(1) {
  transform: translateY(9px) rotate(45deg);
}

.hamburger.active .bar:nth-child(3) {
  transform: translateY(-9px) rotate(-45deg);
}

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

.hero::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -50%;
  width: 100%;
  height: 200%;
  background: radial-gradient(circle, rgba(var(--color-teal-500-rgb), 0.1) 0%, transparent 70%);
  animation: float 20s ease-in-out infinite;
}

@keyframes float {
  0%, 100% { transform: translate(0, 0) rotate(0deg); }
  33% { transform: translate(30px, -30px) rotate(120deg); }
  66% { transform: translate(-20px, 20px) rotate(240deg); }
}

.hero .container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-64);
  align-items: center;
  position: relative;
  z-index: 1;
}

.hero-content {
  animation: slideInLeft 1s var(--ease-bounce);
}

@keyframes slideInLeft {
  from {
    opacity: 0;
    transform: translateX(-50px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

.hero-title {
  font-size: var(--font-size-4xl);
  margin-bottom: var(--space-24);
  line-height: var(--line-height-tight);
  background: linear-gradient(135deg, var(--color-text), var(--color-primary));
  background-clip: text;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  animation: titleGlow 3s ease-in-out infinite alternate;
}

@keyframes titleGlow {
  from { filter: brightness(1); }
  to { filter: brightness(1.1); }
}

.highlight {
  background: linear-gradient(135deg, var(--color-primary), var(--color-teal-700));
  background-clip: text;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  position: relative;
}

.hero-subtitle {
  font-size: var(--font-size-2xl);
  color: var(--color-text-secondary);
  margin-bottom: var(--space-24);
  font-weight: var(--font-weight-medium);
}

.hero-description {
  font-size: var(--font-size-lg);
  margin-bottom: var(--space-40);
  max-width: 90%;
  line-height: var(--line-height-normal);
}

.hero-buttons {
  display: flex;
  gap: var(--space-20);
  margin-bottom: var(--space-32);
}

.hero-image {
  display: flex;
  justify-content: center;
  align-items: center;
  animation: slideInRight 1s var(--ease-bounce);
}

@keyframes slideInRight {
  from {
    opacity: 0;
    transform: translateX(50px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

.profile-circle {
  width: 320px;
  height: 320px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--color-primary), var(--color-teal-700));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 6rem;
  color: var(--color-btn-primary-text);
  box-shadow: var(--shadow-2xl), var(--shadow-glow);
  position: relative;
  overflow: hidden;
  animation: profileFloat 6s ease-in-out infinite;
}

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

.profile-circle::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: linear-gradient(45deg, transparent, rgba(255, 255, 255, 0.1), transparent);
  animation: shimmer 3s linear infinite;
}

@keyframes shimmer {
  0% { transform: translateX(-100%) translateY(-100%) rotate(45deg); }
  100% { transform: translateX(100%) translateY(100%) rotate(45deg); }
}

/* Enhanced Container System */
.container {
  max-width: var(--container-xl);
  margin: 0 auto;
  padding: 0 var(--space-20);
}

/* Enhanced Section Styles */
section {
  padding: var(--space-128) 0;
  position: relative;
}

.section-header {
  text-align: center;
  margin-bottom: var(--space-64);
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

.section-title {
  font-size: var(--font-size-3xl);
  margin-bottom: var(--space-20);
  position: relative;
}

.section-title::after {
  content: '';
  position: absolute;
  bottom: -10px;
  left: 50%;
  transform: translateX(-50%);
  width: 60px;
  height: 4px;
  background: linear-gradient(90deg, var(--color-primary), var(--color-primary-hover));
  border-radius: var(--radius-full);
}

.section-subtitle {
  font-size: var(--font-size-lg);
  color: var(--color-text-secondary);
  font-weight: var(--font-weight-normal);
}

/* Enhanced About Section */
.about-content {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: var(--space-64);
  align-items: start;
  position: relative;
  z-index: 1;
}

.about-text {
  font-size: var(--font-size-lg);
  line-height: var(--line-height-normal);
}

.about-text p {
  margin-bottom: var(--space-24);
  max-width: none;
}

.about-text strong {
  color: var(--color-primary);
  font-weight: var(--font-weight-semibold);
}

.about-info {
  background: var(--glass-bg);
  backdrop-filter: var(--glass-backdrop);
  padding: var(--space-40);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-xl);
  border: 1px solid var(--glass-border);
  position: sticky;
  top: 100px;
}

.info-item {
  display: flex;
  align-items: flex-start;
  gap: var(--space-16);
  margin-bottom: var(--space-32);
  padding-bottom: var(--space-20);
  border-bottom: 1px solid var(--color-card-border-inner);
  transition: all var(--duration-normal) var(--ease-standard);
}

.info-item:last-child {
  border-bottom: none;
  margin-bottom: var(--space-40);
}

.info-item:hover {
  transform: translateX(5px);
}

.info-item i {
  font-size: var(--font-size-xl);
  color: var(--color-primary);
  width: 24px;
  margin-top: var(--space-4);
  transition: all var(--duration-normal) var(--ease-standard);
}

.info-item:hover i {
  transform: scale(1.1);
  color: var(--color-primary-hover);
}

.info-item h4 {
  margin-bottom: var(--space-8);
  font-size: var(--font-size-lg);
}

.info-item p {
  margin-bottom: 0;
  font-size: var(--font-size-base);
  color: var(--color-text-secondary);
}

/* Enhanced Skills Section */
.skills {
  background: var(--gradient-skills);
  position: relative;
}

.skills::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-image: 
    radial-gradient(circle at 25% 25%, rgba(var(--color-teal-500-rgb), 0.1) 0%, transparent 50%),
    radial-gradient(circle at 75% 75%, rgba(34, 197, 94, 0.1) 0%, transparent 50%);
  pointer-events: none;
}

.skills-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-64);
  position: relative;
  z-index: 1;
}

.skills-grid {
  display: grid;
  gap: var(--space-32);
}

.skill-category {
  background: var(--glass-bg);
  backdrop-filter: var(--glass-backdrop);
  padding: var(--space-32);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--glass-border);
  transition: all var(--duration-normal) var(--ease-standard);
  overflow: hidden;
  position: relative;
}

.skill-category::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(var(--color-primary-rgb), 0.1), transparent);
  transition: left var(--duration-slow) var(--ease-standard);
}

.skill-category:hover::before {
  left: 100%;
}

.skill-category:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-xl);
}

.skill-category h4 {
  display: flex;
  align-items: center;
  gap: var(--space-12);
  margin-bottom: var(--space-24);
  color: var(--color-primary);
  font-size: var(--font-size-xl);
}

.skill-category i {
  font-size: var(--font-size-2xl);
}

.skill-items {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-12);
}

.skill-item {
  background: var(--color-surface);
  padding: var(--space-8) var(--space-16);
  border-radius: var(--radius-full);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  border: 2px solid var(--color-border);
  transition: all var(--duration-normal) var(--ease-standard);
  cursor: default;
}

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

.services-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-32);
}

.service-card {
  background: var(--glass-bg);
  backdrop-filter: var(--glass-backdrop);
  padding: var(--space-40);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--glass-border);
  text-align: center;
  transition: all var(--duration-normal) var(--ease-standard);
  position: relative;
  overflow: hidden;
}

.service-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--color-primary), var(--color-primary-hover));
  transform: translateX(-100%);
  transition: transform var(--duration-normal) var(--ease-standard);
}

.service-card:hover::before {
  transform: translateX(0);
}

.service-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-2xl);
}

.service-card i {
  font-size: 3rem;
  color: var(--color-primary);
  margin-bottom: var(--space-24);
  transition: all var(--duration-normal) var(--ease-standard);
}

.service-card:hover i {
  transform: scale(1.1);
  color: var(--color-primary-hover);
}

.service-card h3 {
  margin-bottom: var(--space-16);
  font-size: var(--font-size-xl);
}

.service-card p {
  color: var(--color-text-secondary);
  line-height: var(--line-height-normal);
  max-width: none;
}


/* Enhanced Certifications Section */
.certifications {
    background: var(--gradient-about);
    position: relative;
}

.certifications::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image:
        radial-gradient(circle at 25% 25%, rgba(var(--color-orange-500-rgb), 0.1) 0%, transparent 50%),
        radial-gradient(circle at 75% 75%, rgba(var(--color-orange-400-rgb), 0.1) 0%, transparent 50%);
    pointer-events: none;
}

.certifications-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: var(--space-32);
    position: relative;
    z-index: 1;
}

.certification-card {
    background: var(--glass-bg);
    backdrop-filter: var(--glass-backdrop);
    padding: var(--space-40);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--glass-border);
    text-align: center;
    transition: all var(--duration-normal) var(--ease-standard);
    position: relative;
    overflow: hidden;
}

.certification-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--color-primary), var(--color-primary-hover));
    transform: translateX(-100%);
    transition: transform var(--duration-normal) var(--ease-standard);
}

.certification-card:hover::before {
    transform: translateX(0);
}

.certification-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-2xl);
}

.cert-icon {
    margin-bottom: var(--space-24);
}

.cert-icon i {
    font-size: 3rem;
    color: var(--color-primary);
    transition: all var(--duration-normal) var(--ease-standard);
}

.certification-card:hover .cert-icon i {
    transform: scale(1.1);
    color: var(--color-primary-hover);
}

.cert-content h3 {
    margin-bottom: var(--space-16);
    font-size: var(--font-size-xl);
    color: var(--color-text);
}

.cert-provider {
    font-size: var(--font-size-lg);
    color: var(--color-primary);
    font-weight: var(--font-weight-semibold);
    margin-bottom: var(--space-20);
}

.cert-date {
    font-size: var(--font-size-base);
    color: var(--color-text-secondary);
    margin-bottom: var(--space-24);
}

.cert-skills {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-8);
    justify-content: center;
}

.cert-tag {
    background: var(--color-surface);
    padding: var(--space-6) var(--space-12);
    border-radius: var(--radius-full);
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-medium);
    color: var(--color-primary);
    border: 1px solid var(--color-border);
    transition: all var(--duration-normal) var(--ease-standard);
}

.cert-tag:hover {
    background: var(--color-primary);
    color: var(--color-btn-primary-text);
    transform: translateY(-1px);
}

/* Responsive design for certifications */
@media (max-width: 768px) {
    .certifications-grid {
        grid-template-columns: 1fr;
        gap: var(--space-24);
    }

    .certification-card {
        padding: var(--space-32);
    }
}

@media (max-width: 480px) {
    .certification-card {
        padding: var(--space-24);
    }
}


/* Enhanced Projects Section */
.projects {
  background: var(--gradient-projects);
  position: relative;
}

.projects::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-image: 
    radial-gradient(circle at 30% 40%, rgba(239, 68, 68, 0.1) 0%, transparent 50%),
    radial-gradient(circle at 70% 60%, rgba(236, 72, 153, 0.1) 0%, transparent 50%);
  pointer-events: none;
}

.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: var(--space-40);
  position: relative;
  z-index: 1;
}

.project-card {
  background: var(--glass-bg);
  backdrop-filter: var(--glass-backdrop);
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--glass-border);
  transition: all var(--duration-normal) var(--ease-standard);
  position: relative;
  overflow: hidden;
}

.project-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(135deg, rgba(var(--color-primary-rgb), 0.05) 0%, transparent 100%);
  opacity: 0;
  transition: opacity var(--duration-normal) var(--ease-standard);
}

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

.project-card:hover {
  transform: translateY(-10px) scale(1.02);
  box-shadow: var(--shadow-2xl);
}

.project-image {
  height: 220px;
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-hover));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 3.5rem;
  color: var(--color-btn-primary-text);
  position: relative;
  overflow: hidden;
}

.project-image::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(circle, rgba(255, 255, 255, 0.1) 0%, transparent 70%);
  animation: projectShimmer 4s linear infinite;
}

@keyframes projectShimmer {
  0% { transform: translateX(-100%) translateY(-100%); }
  100% { transform: translateX(100%) translateY(100%); }
}

.project-content {
  padding: var(--space-32);
  position: relative;
}

.project-content h3 {
  margin-bottom: var(--space-16);
  font-size: var(--font-size-xl);
  color: var(--color-text);
}

.project-content p {
  margin-bottom: var(--space-24);
  color: var(--color-text-secondary);
  line-height: var(--line-height-normal);
  max-width: none;
}

.project-tech {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-8);
  margin-bottom: var(--space-32);
}

.tech-tag {
  background: var(--color-surface);
  padding: var(--space-6) var(--space-12);
  border-radius: var(--radius-full);
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-medium);
  color: var(--color-primary);
  border: 1px solid var(--color-border);
  transition: all var(--duration-normal) var(--ease-standard);
}

.tech-tag:hover {
  background: var(--color-primary);
  color: var(--color-btn-primary-text);
  transform: translateY(-1px);
}

.project-links {
  display: flex;
  gap: var(--space-20);
}

.project-link {
  color: var(--color-primary);
  text-decoration: none;
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  display: flex;
  align-items: center;
  gap: var(--space-8);
  transition: all var(--duration-normal) var(--ease-standard);
  padding: var(--space-8) var(--space-12);
  border-radius: var(--radius-base);
}

.project-link:hover {
  color: var(--color-primary-hover);
  background: var(--color-secondary);
  transform: translateX(3px);
}

/* Enhanced Contact Section */
.contact {
  background: var(--gradient-contact);
  position: relative;
}

.contact::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-image: 
    radial-gradient(circle at 40% 20%, rgba(147, 51, 234, 0.1) 0%, transparent 50%),
    radial-gradient(circle at 60% 80%, rgba(59, 130, 246, 0.1) 0%, transparent 50%);
  pointer-events: none;
}

.contact-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-64);
  position: relative;
  z-index: 1;
}

.contact-info {
  display: flex;
  flex-direction: column;
  gap: var(--space-32);
}

.contact-item {
  display: flex;
  align-items: flex-start;
  gap: var(--space-20);
  padding: var(--space-24);
  background: var(--glass-bg);
  backdrop-filter: var(--glass-backdrop);
  border-radius: var(--radius-xl);
  border: 1px solid var(--glass-border);
  transition: all var(--duration-normal) var(--ease-standard);
}

.contact-item:hover {
  transform: translateX(5px);
  box-shadow: var(--shadow-lg);
}

.contact-item i {
  font-size: var(--font-size-2xl);
  color: var(--color-primary);
  width: 32px;
  margin-top: var(--space-4);
  transition: all var(--duration-normal) var(--ease-standard);
}

.contact-item:hover i {
  transform: scale(1.1);
  color: var(--color-primary-hover);
}

.contact-item div {
  flex: 1;
}

.contact-item h4 {
  margin-bottom: var(--space-8);
  font-size: var(--font-size-lg);
  color: var(--color-text);
}

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

.contact-item a {
  color: var(--color-primary);
  transition: color var(--duration-normal) var(--ease-standard);
}

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

.social-links {
  display: flex;
  gap: var(--space-16);
  justify-content: center;
  margin-top: var(--space-32);
}

.social-link {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-hover));
  color: var(--color-btn-primary-text);
  display: flex;
  align-items: center;
  justify-content: center;
  text-decoration: none;
  transition: all var(--duration-normal) var(--ease-standard);
  position: relative;
  overflow: hidden;
}

.social-link::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(135deg, var(--color-primary-hover), var(--color-primary-active));
  opacity: 0;
  transition: opacity var(--duration-normal) var(--ease-standard);
}

.social-link:hover::before {
  opacity: 1;
}

.social-link:hover {
  transform: translateY(-3px) scale(1.1);
  box-shadow: var(--shadow-lg);
}

.social-link i {
  position: relative;
  z-index: 1;
  font-size: var(--font-size-lg);
}

.contact-form {
  background: var(--glass-bg);
  backdrop-filter: var(--glass-backdrop);
  padding: var(--space-48);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-xl);
  border: 1px solid var(--glass-border);
}

.form-group {
  margin-bottom: var(--space-24);
  position: relative;
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: var(--space-16) var(--space-20);
  border: 2px solid var(--color-border);
  border-radius: var(--radius-md);
  font-size: var(--font-size-base);
  font-family: var(--font-family-base);
  color: var(--color-text);
  background-color: var(--color-surface);
  transition: all var(--duration-normal) var(--ease-standard);
  outline: none;
}

.form-group input:focus,
.form-group textarea:focus {
  border-color: var(--color-primary);
  box-shadow: var(--focus-ring);
  transform: translateY(-1px);
}

.form-group textarea {
  resize: vertical;
  min-height: 140px;
  font-family: var(--font-family-base);
}

.form-group.focused input,
.form-group.focused textarea {
  border-color: var(--color-primary);
}

/* Enhanced Footer */
.footer {
  background: var(--color-text);
  color: var(--color-surface);
  text-align: center;
  padding: var(--space-48) 0;
  position: relative;
}

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

.footer-content {
  max-width: var(--container-md);
  margin: 0 auto;
  padding: 0 var(--space-20);
}

.footer-content p {
  margin-bottom: var(--space-12);
  color: rgba(var(--color-surface), 0.8);
  max-width: none;
}

.footer-content p:last-child {
  margin-bottom: 0;
  font-size: var(--font-size-sm);
  opacity: 0.7;
}

/* Enhanced Responsive Design */

/* Large Desktop */
@media (min-width: 1400px) {
  .container {
    max-width: var(--container-2xl);
  }
  
  .hero .container {
    gap: var(--space-96);
  }
  
  .profile-circle {
    width: 380px;
    height: 380px;
    font-size: 7rem;
  }
}

/* Desktop */
@media (max-width: 1200px) {
  .skills-content {
    grid-template-columns: 1fr;
    gap: var(--space-48);
  }
  
  .services-grid {
    grid-template-columns: 1fr 1fr;
  }
}

/* Tablet */
@media (max-width: 1024px) {
  .container {
    padding: 0 var(--space-16);
  }
  
  section {
    padding: var(--space-96) 0;
  }
  
  .hero .container {
    grid-template-columns: 1fr;
    text-align: center;
    gap: var(--space-48);
  }
  
  .hero-title {
    font-size: var(--font-size-3xl);
  }
  
  .profile-circle {
    width: 280px;
    height: 280px;
    font-size: 5rem;
  }
  
  .about-content {
    grid-template-columns: 1fr;
    gap: var(--space-48);
  }
  
  .about-info {
    position: static;
  }
  
  .contact-content {
    grid-template-columns: 1fr;
    gap: var(--space-48);
  }
  
  .services-grid {
    grid-template-columns: 1fr 1fr;
    gap: var(--space-24);
  }
  
  .projects-grid {
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--space-32);
  }
}

/* Mobile */
@media (max-width: 768px) {
  .nav-menu {
    position: fixed;
    left: -100%;
    top: 70px;
    flex-direction: column;
    background: var(--glass-bg);
    backdrop-filter: var(--glass-backdrop);
    width: 100%;
    text-align: center;
    transition: left var(--duration-normal) var(--ease-standard);
    box-shadow: var(--shadow-lg);
    padding: var(--space-32) 0;
    border-bottom: 1px solid var(--color-border);
    border-top: 1px solid var(--color-border);
  }
  
  .nav-menu.active {
    left: 0;
  }
  
  .nav-menu .nav-link {
    margin: var(--space-16) 0;
    padding: var(--space-12) var(--space-24);
    border-radius: var(--radius-md);
    transition: all var(--duration-normal) var(--ease-standard);
  }
  
  .nav-menu .nav-link:hover {
    background: var(--color-secondary);
  }
  
  .hamburger {
    display: flex;
  }
  
  .hero {
    padding-top: 100px;
    min-height: auto;
    padding-bottom: var(--space-48);
  }
  
  .hero-title {
    font-size: var(--font-size-3xl);
  }
  
  .hero-subtitle {
    font-size: var(--font-size-xl);
  }
  
  .hero-buttons {
    flex-direction: column;
    gap: var(--space-16);
    align-items: center;
  }
  
  .btn {
    padding: var(--space-12) var(--space-24);
    font-size: var(--font-size-base);
    width: 200px;
    text-align: center;
  }
  
  .profile-circle {
    width: 220px;
    height: 220px;
    font-size: 4rem;
  }
  
  .section-title {
    font-size: var(--font-size-2xl);
  }
  
  .section-header {
    margin-bottom: var(--space-48);
  }
  
  .services-grid {
    grid-template-columns: 1fr;
    gap: var(--space-20);
  }
  
  .projects-grid {
    grid-template-columns: 1fr;
    gap: var(--space-24);
  }
  
  .skill-category,
  .service-card,
  .about-info,
  .contact-form {
    padding: var(--space-32);
  }
  
  .project-content {
    padding: var(--space-24);
  }
  
  .project-links {
    flex-direction: column;
    gap: var(--space-12);
  }
  
  h1 { font-size: var(--font-size-2xl); }
  h2 { font-size: var(--font-size-xl); }
  h3 { font-size: var(--font-size-lg); }
  
  section {
    padding: var(--space-80) 0;
  }
}

/* Small Mobile */
@media (max-width: 480px) {
  .container {
    padding: 0 var(--space-16);
  }
  
  .nav-container {
    padding: 0 var(--space-16);
  }
  
  .hero-title {
    font-size: var(--font-size-2xl);
  }
  
  .hero-subtitle {
    font-size: var(--font-size-lg);
  }
  
  .hero-description {
    font-size: var(--font-size-base);
    max-width: 100%;
  }
  
  .profile-circle {
    width: 180px;
    height: 180px;
    font-size: 3rem;
  }
  
  .skill-category,
  .service-card,
  .about-info,
  .contact-form {
    padding: var(--space-24);
  }
  
  .section-header {
    margin-bottom: var(--space-40);
  }
  
  .project-content {
    padding: var(--space-20);
  }
  
  .btn {
    width: 100%;
    padding: var(--space-12) var(--space-20);
  }
  
  .hero-buttons .btn {
    width: 100%;
    max-width: 280px;
  }
  
  section {
    padding: var(--space-64) 0;
  }
  
  .section-title {
    font-size: var(--font-size-xl);
  }
  
  .hero .container {
    gap: var(--space-32);
  }
  
  .about-content,
  .contact-content {
    gap: var(--space-32);
  }
  
  .projects-grid {
    gap: var(--space-20);
  }
  
  .services-grid {
    gap: var(--space-16);
  }
  
  .social-links {
    gap: var(--space-12);
  }
  
  .social-link {
    width: 44px;
    height: 44px;
  }
}

/* Enhanced Animation Classes */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(40px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeInDown {
  from {
    opacity: 0;
    transform: translateY(-40px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeInLeft {
  from {
    opacity: 0;
    transform: translateX(-40px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes fadeInRight {
  from {
    opacity: 0;
    transform: translateX(40px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes scaleIn {
  from {
    opacity: 0;
    transform: scale(0.8);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

.fade-in-up {
  animation: fadeInUp 0.8s var(--ease-out) forwards;
}

.fade-in-down {
  animation: fadeInDown 0.8s var(--ease-out) forwards;
}

.fade-in-left {
  animation: fadeInLeft 0.8s var(--ease-out) forwards;
}

.fade-in-right {
  animation: fadeInRight 0.8s var(--ease-out) forwards;
}

.scale-in {
  animation: scaleIn 0.6s var(--ease-bounce) forwards;
}

/* Stagger animation delays */
.skill-category:nth-child(1) { animation-delay: 0.1s; }
.skill-category:nth-child(2) { animation-delay: 0.2s; }
.skill-category:nth-child(3) { animation-delay: 0.3s; }
.skill-category:nth-child(4) { animation-delay: 0.4s; }

.service-card:nth-child(1) { animation-delay: 0.1s; }
.service-card:nth-child(2) { animation-delay: 0.2s; }
.service-card:nth-child(3) { animation-delay: 0.3s; }
.service-card:nth-child(4) { animation-delay: 0.4s; }

.project-card:nth-child(1) { animation-delay: 0.1s; }
.project-card:nth-child(2) { animation-delay: 0.2s; }
.project-card:nth-child(3) { animation-delay: 0.3s; }

/* Loading states */
.btn.loading {
  position: relative;
  color: transparent;
  pointer-events: none;
}

.btn.loading::after {
  content: '';
  position: absolute;
  width: 20px;
  height: 20px;
  top: 50%;
  left: 50%;
  margin-left: -10px;
  margin-top: -10px;
  border: 2px solid var(--color-btn-primary-text);
  border-radius: 50%;
  border-top-color: transparent;
  animation: spin 1s linear infinite;
}

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

/* Back to top button styles */
.back-to-top {
  position: fixed;
  bottom: var(--space-32);
  right: var(--space-32);
  width: 56px;
  height: 56px;
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-hover));
  color: var(--color-btn-primary-text);
  border: none;
  border-radius: 50%;
  cursor: pointer;
  opacity: 0;
  transform: translateY(10px);
  transition: all var(--duration-normal) var(--ease-standard);
  z-index: var(--z-fixed);
  box-shadow: var(--shadow-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--font-size-lg);
}

.back-to-top:hover {
  background: linear-gradient(135deg, var(--color-primary-hover), var(--color-secondary-hover));
  position: relative;
}


.about::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-image: 
    radial-gradient(circle at 20% 80%, rgba(var(--color-orange-500-rgb), 0.1) 0%, transparent 50%),
    radial-gradient(circle at 80% 20%, rgba(var(--color-orange-400-rgb), 0.1) 0%, transparent 50%);
  pointer-events: none;
}

.about


.back-to-top {
  opacity: 0;
  transform: translateY(10px);
}