:root {
  /* Colors */
  --primary-color: #1e40af;
  --primary-light: #3b82f6;
  --primary-dark: #1e3a8a;
  --accent-color: #dc2626;
  --accent-light: #ef4444;
  --success-color: #059669;
  --error-color: #ef4444;
  --warning-color: #f59e0b;
  --shield-green: #16a34a;
  --shield-blue: #0ea5e9;
  --cyber-orange: #ea580c;
  
  /* Neutral Colors */
  --white: #ffffff;
  --gray-50: #f9fafb;
  --gray-100: #f3f4f6;
  --gray-200: #e5e7eb;
  --gray-300: #d1d5db;
  --gray-400: #9ca3af;
  --gray-500: #6b7280;
  --gray-600: #4b5563;
  --gray-700: #374151;
  --gray-800: #1f2937;
  --gray-900: #111827;
  --cyber-dark: #0f172a;
  --cyber-darker: #020617;
  
  /* Text Colors */
  --text-primary: var(--gray-900);
  --text-secondary: var(--gray-600);
  --text-muted: var(--gray-500);
  
  /* Background Colors */
  --bg-primary: var(--white);
  --bg-secondary: var(--gray-50);
  --bg-tertiary: var(--gray-100);
  --bg-cyber: var(--cyber-dark);
  --bg-cyber-light: var(--gray-800);
  
  /* Spacing */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;
  --space-24: 6rem;
  
  /* Typography */
  --font-family: 'Inter', system-ui, -apple-system, sans-serif;
  --font-size-xs: 0.75rem;
  --font-size-sm: 0.875rem;
  --font-size-base: 1rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.25rem;
  --font-size-2xl: 1.5rem;
  --font-size-3xl: 1.875rem;
  --font-size-4xl: 2.25rem;
  --font-size-5xl: 3rem;
  --font-size-6xl: 3.75rem;
  
  /* Line Heights */
  --leading-tight: 1.25;
  --leading-normal: 1.5;
  --leading-relaxed: 1.625;
  
  /* Border Radius */
  --radius-sm: 0.25rem;
  --radius-md: 0.375rem;
  --radius-lg: 0.5rem;
  --radius-xl: 0.75rem;
  --radius-2xl: 1rem;
  --radius-full: 9999px;
  
  /* Shadows */
  --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
  --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);
  
  /* Transitions */
  --transition-fast: 0.15s ease-out;
  --transition-normal: 0.25s ease-out;
  --transition-slow: 0.35s ease-out;
}

[data-theme="dark"] {
  --text-primary: #f1f5f9;
  --text-secondary: #cbd5e1;
  --text-muted: #94a3b8;
  --bg-primary: var(--cyber-dark);
  --bg-secondary: var(--cyber-darker);
  --bg-tertiary: var(--gray-800);
  --primary-color: var(--shield-blue);
  --accent-color: var(--cyber-orange);
}

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

html {
  scroll-behavior: smooth;
}

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

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-4);
}

/* Navigation */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(15, 23, 42, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 2px solid var(--shield-blue);
  box-shadow: 0 4px 20px rgba(14, 165, 233, 0.15);
  transition: all var(--transition-normal);
}

[data-theme="dark"] .navbar {
  border-bottom-color: var(--cyber-orange);
  box-shadow: 0 4px 20px rgba(234, 88, 12, 0.15);
}

.navbar.scrolled {
  background: rgba(15, 23, 42, 0.98);
  box-shadow: 0 8px 32px rgba(14, 165, 233, 0.2);
}

[data-theme="dark"] .navbar.scrolled {
  background: rgba(2, 6, 23, 0.98);
  box-shadow: 0 8px 32px rgba(234, 88, 12, 0.2);
}

.nav-logo .logo-text,
.nav-link {
  color: var(--white) !important;
}

.nav-link:hover,
.nav-link.active {
  color: var(--shield-blue) !important;
}

[data-theme="dark"] .nav-link:hover,
[data-theme="dark"] .nav-link.active {
  color: var(--cyber-orange) !important;
}

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

.nav-logo .logo-text {
  font-size: var(--font-size-xl);
  font-weight: 700;
  background: linear-gradient(135deg, var(--shield-green), var(--shield-blue));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  position: relative;
}

.nav-logo .logo-text::before {
  content: '🛡️';
  position: absolute;
  left: -30px;
  top: 0;
  -webkit-text-fill-color: initial;
  background: none;
}

.nav-menu {
  display: flex;
  list-style: none;
  gap: var(--space-8);
}

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

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

.nav-link::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--shield-blue), var(--shield-green));
  transition: width var(--transition-normal);
}

[data-theme="dark"] .nav-link::after {
  background: linear-gradient(90deg, var(--cyber-orange), var(--accent-light));
}

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

.nav-actions {
  display: flex;
  align-items: center;
  gap: var(--space-4);
}

.theme-toggle {
  background: none;
  border: none;
  cursor: pointer;
  font-size: var(--font-size-lg);
  padding: var(--space-2);
  border-radius: var(--radius-md);
  transition: background-color var(--transition-fast);
}

.theme-toggle:hover {
  background-color: var(--gray-100);
}

[data-theme="dark"] .theme-toggle:hover {
  background-color: var(--gray-700);
}

.theme-toggle .sun {
  display: block;
}

.theme-toggle .moon {
  display: none;
}

[data-theme="dark"] .theme-toggle .sun {
  display: none;
}

[data-theme="dark"] .theme-toggle .moon {
  display: block;
}

.hamburger {
  display: none;
  flex-direction: column;
  cursor: pointer;
  padding: var(--space-2);
}

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

.hamburger.active .bar:nth-child(1) {
  transform: rotate(-45deg) translate(-5px, 6px);
}

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

.hamburger.active .bar:nth-child(3) {
  transform: rotate(45deg) translate(-5px, -6px);
}

/* Hero Section */
.hero {
  padding: var(--space-24) 0 var(--space-16);
  min-height: 100vh;
  display: flex;
  align-items: center;
  background: linear-gradient(135deg, 
    rgba(15, 23, 42, 0.95) 0%, 
    rgba(30, 64, 175, 0.1) 50%, 
    rgba(22, 163, 74, 0.1) 100%
  ), 
  radial-gradient(circle at 20% 80%, rgba(14, 165, 233, 0.1) 0%, transparent 50%),
  radial-gradient(circle at 80% 20%, rgba(22, 163, 74, 0.1) 0%, transparent 50%);
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-image: 
    radial-gradient(circle at 25% 25%, rgba(14, 165, 233, 0.05) 0%, transparent 50%),
    radial-gradient(circle at 75% 75%, rgba(22, 163, 74, 0.05) 0%, transparent 50%);
  pointer-events: none;
}

.hero-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-4);
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-16);
  align-items: center;
}

.hero-title {
  font-size: var(--font-size-5xl);
  font-weight: 700;
  line-height: var(--leading-tight);
  margin-bottom: var(--space-6);
  color: var(--white);
  text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
}

.highlight {
  background: linear-gradient(135deg, var(--shield-green), var(--shield-blue));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  font-weight: 800;
}

.hero-subtitle {
  font-size: var(--font-size-2xl);
  color: rgba(255, 255, 255, 0.9);
  margin-bottom: var(--space-6);
}

.typing-text {
  color: var(--cyber-orange);
  font-weight: 600;
  text-shadow: 0 0 10px rgba(234, 88, 12, 0.5);
}

.typing-text::after {
  content: '|';
  animation: blink 1s infinite;
}

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

.hero-description {
  font-size: var(--font-size-lg);
  color: rgba(255, 255, 255, 0.8);
  margin-bottom: var(--space-8);
  line-height: var(--leading-relaxed);
}

.hero-buttons {
  display: flex;
  gap: var(--space-4);
}

.btn {
  display: inline-block;
  padding: var(--space-3) var(--space-6);
  border-radius: var(--radius-lg);
  font-weight: 600;
  text-decoration: none;
  transition: all var(--transition-normal);
  cursor: pointer;
  border: none;
  font-size: var(--font-size-base);
}

.btn-primary {
  background: linear-gradient(135deg, var(--shield-green), var(--shield-blue));
  color: var(--white);
  border: 2px solid transparent;
  position: relative;
  overflow: hidden;
}

.btn-primary::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 0.5s;
}

.btn-primary:hover {
  background: linear-gradient(135deg, var(--shield-blue), var(--shield-green));
  transform: translateY(-2px);
  box-shadow: 0 10px 25px rgba(22, 163, 74, 0.3);
}

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

.btn-secondary {
  background-color: transparent;
  color: var(--white);
  border: 2px solid var(--shield-blue);
  backdrop-filter: blur(10px);
}

.btn-secondary:hover {
  border-color: var(--shield-green);
  color: var(--shield-green);
  background: rgba(22, 163, 74, 0.1);
  transform: translateY(-2px);
  box-shadow: 0 10px 25px rgba(14, 165, 233, 0.2);
}

.hero-image {
  display: flex;
  justify-content: center;
}

.hero-avatar {
  position: relative;
  width: 350px;
  height: 350px;
  border-radius: var(--radius-full);
  overflow: hidden;
  box-shadow: 
    0 0 50px rgba(14, 165, 233, 0.3),
    0 0 100px rgba(22, 163, 74, 0.2),
    inset 0 0 50px rgba(255, 255, 255, 0.1);
  border: 3px solid transparent;
  background: linear-gradient(135deg, var(--shield-blue), var(--shield-green)) border-box;
  animation: float 6s ease-in-out infinite;
}

.hero-avatar::before {
  content: '';
  position: absolute;
  top: -3px;
  left: -3px;
  right: -3px;
  bottom: -3px;
  background: linear-gradient(135deg, var(--shield-blue), var(--shield-green));
  border-radius: var(--radius-full);
  z-index: -1;
}

.hero-avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

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

/* Section Styling */
section {
  padding: var(--space-20) 0;
}

.section-header {
  text-align: center;
  margin-bottom: var(--space-16);
}

.section-title {
  font-size: var(--font-size-4xl);
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: var(--space-4);
}

.section-subtitle {
  font-size: var(--font-size-xl);
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto;
}

/* About Section */
.about {
  background: linear-gradient(180deg, 
    var(--bg-primary) 0%, 
    rgba(15, 23, 42, 0.05) 50%, 
    var(--bg-primary) 100%
  );
  position: relative;
}

.about::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-image: 
    radial-gradient(circle at 10% 20%, rgba(22, 163, 74, 0.03) 0%, transparent 50%),
    radial-gradient(circle at 90% 80%, rgba(14, 165, 233, 0.03) 0%, transparent 50%);
  pointer-events: none;
}

.about-content {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: var(--space-16);
  align-items: start;
}

.about-text p {
  font-size: var(--font-size-lg);
  color: var(--text-secondary);
  margin-bottom: var(--space-6);
  line-height: var(--leading-relaxed);
}

.skills {
  margin-top: var(--space-8);
}

.skills h3 {
  font-size: var(--font-size-xl);
  color: var(--text-primary);
  margin-bottom: var(--space-4);
}

.skills-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
  gap: var(--space-3);
}

.skill-item {
  background: linear-gradient(135deg, 
    rgba(14, 165, 233, 0.1), 
    rgba(22, 163, 74, 0.1)
  );
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius-lg);
  text-align: center;
  font-weight: 500;
  color: var(--shield-blue);
  border: 1px solid rgba(14, 165, 233, 0.2);
  transition: all var(--transition-normal);
  position: relative;
  overflow: hidden;
}

.skill-item::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(14, 165, 233, 0.1), transparent);
  transition: left 0.5s;
}

[data-theme="dark"] .skill-item {
  background: linear-gradient(135deg, 
    rgba(234, 88, 12, 0.1), 
    rgba(239, 68, 68, 0.1)
  );
  border-color: rgba(234, 88, 12, 0.2);
  color: var(--cyber-orange);
}

.skill-item:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 25px rgba(14, 165, 233, 0.2);
  border-color: var(--shield-blue);
}

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

[data-theme="dark"] .skill-item:hover {
  box-shadow: 0 10px 25px rgba(234, 88, 12, 0.2);
  border-color: var(--cyber-orange);
}

.about-stats {
  display: flex;
  flex-direction: column;
  gap: var(--space-8);
}

.stat {
  text-align: center;
  padding: var(--space-6);
  background: linear-gradient(135deg, 
    rgba(255, 255, 255, 0.9), 
    rgba(14, 165, 233, 0.05)
  );
  border-radius: var(--radius-xl);
  box-shadow: 
    0 10px 25px rgba(14, 165, 233, 0.1),
    inset 0 1px 0 rgba(255, 255, 255, 0.6);
  border: 1px solid rgba(14, 165, 233, 0.1);
  transition: transform var(--transition-normal);
  position: relative;
  overflow: hidden;
}

.stat::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--shield-blue), var(--shield-green));
}

[data-theme="dark"] .stat {
  background: linear-gradient(135deg, 
    rgba(15, 23, 42, 0.9), 
    rgba(234, 88, 12, 0.05)
  );
  border-color: rgba(234, 88, 12, 0.1);
}

[data-theme="dark"] .stat::before {
  background: linear-gradient(90deg, var(--cyber-orange), var(--accent-light));
}

.stat:hover {
  transform: translateY(-5px);
  box-shadow: 
    0 20px 40px rgba(14, 165, 233, 0.15),
    inset 0 1px 0 rgba(255, 255, 255, 0.6);
}

.stat-number {
  font-size: var(--font-size-4xl);
  font-weight: 700;
  background: linear-gradient(135deg, var(--shield-blue), var(--shield-green));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: var(--space-2);
}

[data-theme="dark"] .stat-number {
  background: linear-gradient(135deg, var(--cyber-orange), var(--accent-light));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

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

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

.service-card {
  background: linear-gradient(135deg, 
    rgba(255, 255, 255, 0.95), 
    rgba(14, 165, 233, 0.02)
  );
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: 
    0 10px 25px rgba(14, 165, 233, 0.1),
    inset 0 1px 0 rgba(255, 255, 255, 0.6);
  border: 1px solid rgba(14, 165, 233, 0.1);
  transition: all var(--transition-normal);
  position: relative;
}

.service-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--shield-blue), var(--shield-green));
}

[data-theme="dark"] .service-card {
  background: linear-gradient(135deg, 
    rgba(15, 23, 42, 0.95), 
    rgba(234, 88, 12, 0.02)
  );
  border-color: rgba(234, 88, 12, 0.1);
}

[data-theme="dark"] .service-card::before {
  background: linear-gradient(90deg, var(--cyber-orange), var(--accent-light));
}

.service-card:hover {
  transform: translateY(-8px);
  box-shadow: 
    0 25px 50px rgba(14, 165, 233, 0.15),
    inset 0 1px 0 rgba(255, 255, 255, 0.6);
}

.service-image {
  position: relative;
  height: 250px;
  overflow: hidden;
}

.service-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-slow);
}

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

.service-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, 
    rgba(14, 165, 233, 0.9), 
    rgba(22, 163, 74, 0.9)
  );
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: opacity var(--transition-normal);
}

[data-theme="dark"] .service-overlay {
  background: linear-gradient(135deg, 
    rgba(234, 88, 12, 0.9), 
    rgba(239, 68, 68, 0.9)
  );
}

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

.service-links {
  display: flex;
  gap: var(--space-4);
}

.service-link {
  background-color: var(--white);
  color: var(--shield-blue);
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-md);
  text-decoration: none;
  font-weight: 600;
  transition: all var(--transition-fast);
  border: 2px solid transparent;
}

.service-link:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 25px rgba(255, 255, 255, 0.3);
  border-color: var(--shield-green);
  background: linear-gradient(135deg, var(--white), rgba(22, 163, 74, 0.1));
}

.service-content {
  padding: var(--space-6);
}

.service-title {
  font-size: var(--font-size-xl);
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: var(--space-3);
}

.service-description {
  color: var(--text-secondary);
  margin-bottom: var(--space-4);
  line-height: var(--leading-relaxed);
}

.service-features {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}

.tech-tag {
  background: linear-gradient(135deg, 
    rgba(14, 165, 233, 0.1), 
    rgba(22, 163, 74, 0.1)
  );
  color: var(--shield-blue);
  padding: var(--space-1) var(--space-3);
  border-radius: var(--radius-full);
  font-size: var(--font-size-sm);
  font-weight: 500;
  border: 1px solid rgba(14, 165, 233, 0.2);
  transition: all var(--transition-fast);
}

.tech-tag:hover {
  background: linear-gradient(135deg, 
    rgba(14, 165, 233, 0.2), 
    rgba(22, 163, 74, 0.2)
  );
  transform: translateY(-1px);
}

[data-theme="dark"] .tech-tag {
  background: linear-gradient(135deg, 
    rgba(234, 88, 12, 0.1), 
    rgba(239, 68, 68, 0.1)
  );
  color: var(--cyber-orange);
  border-color: rgba(234, 88, 12, 0.2);
}

[data-theme="dark"] .tech-tag:hover {
  background: linear-gradient(135deg, 
    rgba(234, 88, 12, 0.2), 
    rgba(239, 68, 68, 0.2)
  );
}

/* Contact Section */
.contact {
  background: linear-gradient(180deg, 
    var(--bg-primary) 0%, 
    rgba(15, 23, 42, 0.03) 50%, 
    var(--bg-primary) 100%
  );
  position: relative;
}

.contact::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-image: 
    radial-gradient(circle at 20% 30%, rgba(14, 165, 233, 0.03) 0%, transparent 50%),
    radial-gradient(circle at 80% 70%, rgba(22, 163, 74, 0.03) 0%, transparent 50%);
  pointer-events: none;
}

.contact-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-16);
}

.contact-info h3 {
  font-size: var(--font-size-2xl);
  color: var(--text-primary);
  margin-bottom: var(--space-4);
}

.contact-info p {
  color: var(--text-secondary);
  margin-bottom: var(--space-8);
  line-height: var(--leading-relaxed);
}

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

.contact-item {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  margin-bottom: var(--space-4);
  color: var(--text-secondary);
}

.contact-icon {
  font-size: var(--font-size-lg);
}

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

.social-link {
  color: var(--primary-color);
  text-decoration: none;
  font-weight: 600;
  transition: color var(--transition-fast);
}

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

.contact-form {
  background: linear-gradient(135deg, 
    rgba(255, 255, 255, 0.95), 
    rgba(14, 165, 233, 0.02)
  );
  padding: var(--space-8);
  border-radius: var(--radius-xl);
  box-shadow: 
    0 20px 40px rgba(14, 165, 233, 0.1),
    inset 0 1px 0 rgba(255, 255, 255, 0.6);
  border: 1px solid rgba(14, 165, 233, 0.1);
  position: relative;
}

.contact-form::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--shield-blue), var(--shield-green));
  border-radius: var(--radius-xl) var(--radius-xl) 0 0;
}

[data-theme="dark"] .contact-form {
  background: linear-gradient(135deg, 
    rgba(15, 23, 42, 0.95), 
    rgba(234, 88, 12, 0.02)
  );
  border-color: rgba(234, 88, 12, 0.1);
}

[data-theme="dark"] .contact-form::before {
  background: linear-gradient(90deg, var(--cyber-orange), var(--accent-light));
}

.form-group {
  margin-bottom: var(--space-6);
}

.form-group label {
  display: block;
  margin-bottom: var(--space-2);
  font-weight: 500;
  color: var(--text-primary);
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: var(--space-3);
  border: 1px solid var(--gray-300);
  border-radius: var(--radius-md);
  font-family: inherit;
  font-size: var(--font-size-base);
  transition: border-color var(--transition-fast);
  background-color: var(--bg-primary);
  color: var(--text-primary);
}

.form-group select {
  width: 100%;
  padding: var(--space-3);
  border: 1px solid var(--gray-300);
  border-radius: var(--radius-md);
  font-family: inherit;
  font-size: var(--font-size-base);
  transition: border-color var(--transition-fast);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  cursor: pointer;
}

[data-theme="dark"] .form-group input,
[data-theme="dark"] .form-group textarea,
[data-theme="dark"] .form-group select {
  border-color: var(--gray-600);
}

/* Call to Action Section */
.call-to-action {
  background: linear-gradient(135deg, 
    var(--cyber-dark) 0%, 
    var(--primary-dark) 50%, 
    var(--shield-green) 100%
  );
  color: var(--white);
  text-align: center;
  position: relative;
  overflow: hidden;
}

.call-to-action::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-image: 
    radial-gradient(circle at 25% 25%, rgba(14, 165, 233, 0.1) 0%, transparent 50%),
    radial-gradient(circle at 75% 75%, rgba(22, 163, 74, 0.1) 0%, transparent 50%);
  pointer-events: none;
}

[data-theme="dark"] .call-to-action {
  background: linear-gradient(135deg, 
    var(--cyber-darker) 0%, 
    var(--cyber-dark) 50%, 
    rgba(234, 88, 12, 0.8) 100%
  );
}

.call-to-action .section-title {
  color: var(--white);
}

.call-to-action .section-subtitle {
  color: rgba(255, 255, 255, 0.9);
}

.cta-button-container {
  margin-top: var(--space-8);
}

.btn-cta {
  background: linear-gradient(135deg, var(--shield-green), var(--success-color));
  color: var(--white);
  font-size: var(--font-size-lg);
  padding: var(--space-4) var(--space-8);
  border-radius: var(--radius-xl);
  font-weight: 700;
  box-shadow: 
    0 10px 30px rgba(22, 163, 74, 0.3),
    inset 0 1px 0 rgba(255, 255, 255, 0.2);
  transition: all var(--transition-normal);
  border: 2px solid rgba(255, 255, 255, 0.2);
  position: relative;
  overflow: hidden;
}

.btn-cta::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 0.5s;
}

.btn-cta:hover {
  background: linear-gradient(135deg, var(--success-color), var(--shield-green));
  transform: translateY(-3px);
  box-shadow: 
    0 20px 40px rgba(22, 163, 74, 0.4),
    inset 0 1px 0 rgba(255, 255, 255, 0.3);
  border-color: rgba(255, 255, 255, 0.4);
}

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

[data-theme="dark"] .btn-cta {
  background: linear-gradient(135deg, var(--cyber-orange), var(--accent-light));
  box-shadow: 
    0 10px 30px rgba(234, 88, 12, 0.3),
    inset 0 1px 0 rgba(255, 255, 255, 0.2);
}

[data-theme="dark"] .btn-cta:hover {
  background: linear-gradient(135deg, var(--accent-light), var(--cyber-orange));
  box-shadow: 
    0 20px 40px rgba(234, 88, 12, 0.4),
    inset 0 1px 0 rgba(255, 255, 255, 0.3);
}

.cta-subtext {
  margin-top: var(--space-4);
  color: rgba(255, 255, 255, 0.8);
  font-size: var(--font-size-base);
  font-weight: 500;
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  outline: none;
  border-color: var(--shield-blue);
  box-shadow: 
    0 0 0 3px rgba(14, 165, 233, 0.1),
    0 0 20px rgba(14, 165, 233, 0.2);
}

[data-theme="dark"] .form-group input:focus,
[data-theme="dark"] .form-group textarea:focus,
[data-theme="dark"] .form-group select:focus {
  border-color: var(--cyber-orange);
  box-shadow: 
    0 0 0 3px rgba(234, 88, 12, 0.1),
    0 0 20px rgba(234, 88, 12, 0.2);
}

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

.error-message {
  display: block;
  color: var(--error-color);
  font-size: var(--font-size-sm);
  margin-top: var(--space-1);
}

/* Footer */
.footer {
  background: linear-gradient(135deg, var(--cyber-dark), var(--cyber-darker));
  color: var(--gray-400);
  text-align: center;
  padding: var(--space-8) 0;
  border-top: 2px solid var(--shield-blue);
  position: relative;
}

.footer::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--shield-blue), var(--shield-green));
}

[data-theme="dark"] .footer {
  border-top-color: var(--cyber-orange);
}

[data-theme="dark"] .footer::before {
  background: linear-gradient(90deg, var(--cyber-orange), var(--accent-light));
}

/* Mobile Fixed Call Button */
.mobile-fixed-cta {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: linear-gradient(135deg, var(--shield-green), var(--success-color));
  color: var(--white);
  border: none;
  padding: var(--space-4) var(--space-6);
  border-top-left-radius: var(--radius-xl);
  border-top-right-radius: var(--radius-xl);
  border-bottom-left-radius: 0;
  border-bottom-right-radius: 0;
  font-weight: 600;
  font-size: var(--font-size-lg);
  box-shadow: 
    0 -10px 30px rgba(22, 163, 74, 0.3),
    inset 0 1px 0 rgba(255, 255, 255, 0.2);
  cursor: pointer;
  transition: all var(--transition-normal);
  display: none;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  width: 100%;
  border-top: 2px solid rgba(255, 255, 255, 0.2);
  overflow: hidden;
}

.mobile-fixed-cta::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.1), transparent);
  transition: left 0.5s;
}

.mobile-fixed-cta:hover {
  background: linear-gradient(135deg, var(--success-color), var(--shield-green));
  transform: translateY(-2px);
  box-shadow: 
    0 -15px 40px rgba(22, 163, 74, 0.4),
    inset 0 1px 0 rgba(255, 255, 255, 0.3);
  border-top-color: rgba(255, 255, 255, 0.4);
}

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

.mobile-fixed-cta:active {
  transform: translateY(0);
}

[data-theme="dark"] .mobile-fixed-cta {
  background: linear-gradient(135deg, var(--cyber-orange), var(--accent-light));
  box-shadow: 
    0 -10px 30px rgba(234, 88, 12, 0.3),
    inset 0 1px 0 rgba(255, 255, 255, 0.2);
}

[data-theme="dark"] .mobile-fixed-cta:hover {
  background: linear-gradient(135deg, var(--accent-light), var(--cyber-orange));
  box-shadow: 
    0 -15px 40px rgba(234, 88, 12, 0.4),
    inset 0 1px 0 rgba(255, 255, 255, 0.3);
}

/* Responsive Design */
@media (max-width: 768px) {
  .hamburger {
    display: flex;
  }
  
  .nav-menu {
    position: fixed;
    left: -100%;
    top: 70px;
    flex-direction: column;
    background-color: var(--bg-primary);
    width: 100%;
    text-align: center;
    transition: 0.3s;
    box-shadow: var(--shadow-lg);
    padding: var(--space-8) 0;
  }
  
  .nav-menu.active {
    left: 0;
  }
  
  .btn-cta {
    font-size: var(--font-size-base);
    padding: var(--space-3) var(--space-6);
  }
  
  .mobile-fixed-cta {
    display: flex;
  }
  
  .hero-container {
    grid-template-columns: 1fr;
    text-align: center;
    gap: var(--space-8);
  }
  
  .hero-avatar {
    width: 250px;
    height: 250px;
  }
  
  .hero-title {
    font-size: var(--font-size-3xl);
  }
  
  .hero-subtitle {
    font-size: var(--font-size-xl);
  }
  
  .hero-buttons {
    flex-direction: column;
    align-items: center;
    gap: var(--space-3);
  }
  
  .about-content {
    grid-template-columns: 1fr;
    gap: var(--space-8);
  }
  
  .about-stats {
    flex-direction: row;
    justify-content: space-around;
  }
  
  .contact-content {
    grid-template-columns: 1fr;
    gap: var(--space-8);
  }
  
  .services-grid {
    grid-template-columns: 1fr;
  }
  
  .skills-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .section-title {
    font-size: var(--font-size-3xl);
  }
  
  .section-subtitle {
    font-size: var(--font-size-lg);
  }

  .mobile-fixed-cta {
    display: flex;
  }
  
  .call-to-action {
    display: none;
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 var(--space-3);
  }
  
  .nav-container {
    padding: var(--space-3) var(--space-4);
  }
  
  .btn-cta {
    font-size: var(--font-size-sm);
    padding: var(--space-3) var(--space-4);
  }
  
  .hero {
    padding: var(--space-20) 0 var(--space-12);
  }
  
  .hero-title {
    font-size: var(--font-size-2xl);
  }
  
  .hero-subtitle {
    font-size: var(--font-size-lg);
  }
  
  .hero-avatar {
    width: 200px;
    height: 200px;
  }
  
  .section-title {
    font-size: var(--font-size-2xl);
  }
  
  .about-stats {
    flex-direction: column;
    gap: var(--space-4);
  }
  
  .skills-grid {
    grid-template-columns: 1fr;
  }
  
  .contact-form {
    padding: var(--space-6);
  }
  
  .service-links {
    flex-direction: column;
  }
}