:root {
  /* Color Palette - Dark Mode with Vibrant Accents */
  --bg-primary: #0a0a0f;
  --bg-secondary: #13131a;
  --bg-tertiary: #1a1a24;
  --text-primary: #e8e8f0;
  --text-secondary: #a8a8b8;
  --accent-primary: #f97316;
  --accent-secondary: #ea580c;
  --accent-gradient: linear-gradient(135deg, #fb923c 0%, #f97316 50%, #ea580c 100%);
  --success: #10b981;
  --warning: #f59e0b;

  /* Glassmorphism */
  --glass-bg: rgba(26, 26, 36, 0.7);
  --glass-border: rgba(255, 255, 255, 0.1);

  /* Spacing */
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 2rem;
  --spacing-lg: 4rem;
  --spacing-xl: 6rem;

  /* Typography */
  --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-size-xs: 0.875rem;
  --font-size-sm: 1rem;
  --font-size-md: 1.125rem;
  --font-size-lg: 1.5rem;
  --font-size-xl: 2rem;
  --font-size-2xl: 3rem;
  --font-size-3xl: 4rem;

  /* Transitions */
  --transition-fast: 0.2s ease;
  --transition-normal: 0.3s ease;
  --transition-slow: 0.5s ease;

  /* Shadows */
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.5);
  --shadow-glow: 0 0 20px rgba(249, 115, 22, 0.3);
}

/* Light Mode Theme */
[data-theme="light"] {
  --bg-primary: #f8f9fa;
  --bg-secondary: #ffffff;
  --bg-tertiary: #e9ecef;
  --text-primary: #1a1a24;
  --text-secondary: #4a5568;
  --accent-primary: #f97316;
  --accent-secondary: #ea580c;
  --accent-gradient: linear-gradient(135deg, #fb923c 0%, #f97316 50%, #ea580c 100%);
  --success: #10b981;
  --warning: #f59e0b;

  /* Glassmorphism for light mode */
  --glass-bg: rgba(255, 255, 255, 0.8);
  --glass-border: rgba(0, 0, 0, 0.1);

  /* Shadows for light mode */
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.08);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.12);
  --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.15);
  --shadow-glow: 0 0 20px rgba(249, 115, 22, 0.2);
}

/* Theme Toggle Button */
.theme-toggle {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  width: 60px;
  height: 60px;
  border-radius: 50%;
  background: var(--glass-bg);
  backdrop-filter: blur(10px);
  border: 2px solid var(--glass-border);
  color: var(--text-primary);
  font-size: 1.5rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-normal);
  box-shadow: var(--shadow-lg);
  z-index: 999;
}

.theme-toggle:hover {
  transform: scale(1.1) rotate(15deg);
  box-shadow: var(--shadow-glow);
  background: var(--accent-primary);
  color: white;
}

.theme-toggle:active {
  transform: scale(0.95);
}

/* Accessibility */
.skip-link {
  position: absolute;
  top: -100px;
  left: 0;
  background: var(--accent-primary);
  color: white;
  padding: 1rem;
  z-index: 2000;
  transition: top 0.3s;
}

.skip-link:focus {
  top: 0;
}

/* Enhanced Focus States */
:focus-visible {
  outline: 3px solid var(--accent-primary);
  outline-offset: 4px;
}

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

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

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

/* Typography */
h1,
h2,
h3,
h4,
h5,
h6 {
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: var(--spacing-sm);
}

h1 {
  font-size: var(--font-size-3xl);
}

h2 {
  font-size: var(--font-size-2xl);
}

h3 {
  font-size: var(--font-size-xl);
}

p {
  margin-bottom: var(--spacing-sm);
  color: var(--text-secondary);
}

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

a:hover {
  color: var(--accent-secondary);
}

/* Utility Classes */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

.section {
  padding: var(--spacing-xl) 0;
  position: relative;
}

.glass {
  background: var(--glass-bg);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border: 1px solid var(--glass-border);
  border-radius: 16px;
}

.gradient-text {
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* Navigation */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  padding: var(--spacing-sm) 0;
  transition: all var(--transition-normal);
}

.navbar.scrolled {
  background: var(--glass-bg);
  backdrop-filter: blur(10px);
  box-shadow: var(--shadow-md);
}

.nav-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

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

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

.nav-links a {
  color: var(--text-primary);
  font-weight: 500;
  padding: var(--spacing-xs) var(--spacing-sm);
  border-radius: 8px;
  transition: all var(--transition-fast);
}

.nav-links a:hover {
  background: var(--glass-bg);
  color: var(--accent-primary);
}

.mobile-menu-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--text-primary);
  font-size: var(--font-size-lg);
  cursor: pointer;
}

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

.hero-background {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: radial-gradient(circle at 20% 50%, rgba(249, 115, 22, 0.15) 0%, transparent 50%),
    radial-gradient(circle at 80% 80%, rgba(234, 88, 12, 0.15) 0%, transparent 50%);
  z-index: 0;
}

.hero-content {
  position: relative;
  z-index: 1;
  text-align: center;
  max-width: 900px;
}

.hero-subtitle {
  font-size: var(--font-size-md);
  color: var(--accent-primary);
  font-weight: 600;
  margin-bottom: var(--spacing-sm);
  opacity: 0;
  animation: fadeInUp 0.8s ease forwards;
}

.hero-title {
  font-size: clamp(2.5rem, 8vw, 4.5rem);
  margin-bottom: var(--spacing-sm);
  opacity: 0;
  animation: fadeInUp 0.8s ease 0.2s forwards;
}

.hero-description {
  font-size: var(--font-size-md);
  color: var(--text-secondary);
  margin-bottom: var(--spacing-md);
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
  opacity: 0;
  animation: fadeInUp 0.8s ease 0.4s forwards;
}

.hero-cta {
  display: flex;
  gap: var(--spacing-sm);
  justify-content: center;
  flex-wrap: wrap;
  opacity: 0;
  animation: fadeInUp 0.8s ease 0.6s forwards;
}

.btn {
  padding: 1rem 2rem;
  border-radius: 12px;
  font-weight: 600;
  font-size: var(--font-size-sm);
  cursor: pointer;
  transition: all var(--transition-normal);
  border: none;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
}

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

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 0 30px rgba(249, 115, 22, 0.5);
}

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

.btn-secondary:hover {
  background: var(--glass-bg);
  border-color: var(--accent-primary);
}

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

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

.section-title {
  margin-bottom: var(--spacing-sm);
}

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

.about-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-lg);
  align-items: center;
}

.about-text {
  font-size: var(--font-size-md);
}

.about-text p {
  margin-bottom: var(--spacing-md);
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--spacing-md);
}

.stat-card {
  padding: var(--spacing-md);
  text-align: center;
  transition: transform var(--transition-normal);
}

.stat-card:hover {
  transform: translateY(-5px);
}

.stat-number {
  font-size: var(--font-size-2xl);
  font-weight: 700;
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: var(--spacing-xs);
}

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

/* Skills Section */
.skills-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--spacing-md);
  margin-top: var(--spacing-lg);
}

.skill-category {
  padding: var(--spacing-md);
  transition: all var(--transition-normal);
}

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

.skill-category-title {
  font-size: var(--font-size-lg);
  margin-bottom: var(--spacing-md);
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.skill-icon {
  font-size: var(--font-size-xl);
}

.skill-list {
  list-style: none;
}

.skill-item {
  margin-bottom: var(--spacing-md);
}

.skill-name {
  display: flex;
  justify-content: space-between;
  margin-bottom: var(--spacing-xs);
  font-weight: 500;
}

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

.skill-progress {
  height: 100%;
  background: var(--accent-gradient);
  border-radius: 4px;
  transition: width 1s ease;
  width: 0;
}

.skill-item.visible .skill-progress {
  width: var(--progress-width);
}

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

.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: var(--spacing-md);
  margin-top: var(--spacing-lg);
}

.project-card {
  padding: 0;
  overflow: hidden;
  transition: all var(--transition-normal);
  cursor: pointer;
}

.project-card:hover {
  transform: translateY(-10px);
  box-shadow: var(--shadow-lg);
}

.project-image {
  width: 100%;
  height: 200px;
  object-fit: cover;
  transition: transform var(--transition-slow);
}

.project-card:hover .project-image {
  transform: scale(1.1);
}

.project-content {
  padding: var(--spacing-md);
}

.project-title {
  font-size: var(--font-size-lg);
  margin-bottom: var(--spacing-sm);
}

.project-description {
  color: var(--text-secondary);
  margin-bottom: var(--spacing-md);
}

.project-tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-xs);
  margin-bottom: var(--spacing-md);
}

.tag {
  padding: 0.25rem 0.75rem;
  background: var(--bg-tertiary);
  border-radius: 20px;
  font-size: var(--font-size-xs);
  color: var(--accent-primary);
  border: 1px solid var(--glass-border);
}

.project-links {
  display: flex;
  gap: var(--spacing-sm);
}

.project-link {
  padding: 0.5rem 1rem;
  background: var(--bg-tertiary);
  border-radius: 8px;
  font-size: var(--font-size-xs);
  transition: all var(--transition-fast);
}

.project-link:hover {
  background: var(--accent-primary);
  color: white;
}

/* Contact Section */
.contact-content {
  max-width: 600px;
  margin: 0 auto;
  text-align: center;
}

/* WhatsApp Contact */
.whatsapp-contact {
  margin-top: var(--spacing-lg);
  padding: var(--spacing-lg);
  text-align: center;
  transition: all var(--transition-normal);
}

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

.whatsapp-icon {
  margin: 0 auto var(--spacing-md);
  width: 80px;
  height: 80px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #25D366;
  transition: all var(--transition-normal);
}

.whatsapp-contact:hover .whatsapp-icon {
  transform: scale(1.1) rotate(5deg);
}

.whatsapp-title {
  font-size: var(--font-size-xl);
  margin-bottom: var(--spacing-sm);
  color: var(--text-primary);
}

.whatsapp-description {
  color: var(--text-secondary);
  margin-bottom: var(--spacing-md);
  font-size: var(--font-size-md);
}

.btn-whatsapp {
  background: linear-gradient(135deg, #25D366 0%, #128C7E 100%);
  color: white;
  box-shadow: 0 0 20px rgba(37, 211, 102, 0.3);
}

.btn-whatsapp:hover {
  transform: translateY(-2px);
  box-shadow: 0 0 30px rgba(37, 211, 102, 0.5);
  color: white;
}

.social-link-whatsapp:hover {
  background: #25D366;
  box-shadow: 0 0 20px rgba(37, 211, 102, 0.4);
}


.contact-form {
  margin-top: var(--spacing-lg);
  padding: var(--spacing-lg);
}

.form-group {
  margin-bottom: var(--spacing-md);
  text-align: left;
}

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

.form-input,
.form-textarea {
  width: 100%;
  padding: var(--spacing-sm);
  background: var(--bg-tertiary);
  border: 2px solid var(--glass-border);
  border-radius: 8px;
  color: var(--text-primary);
  font-family: var(--font-primary);
  font-size: var(--font-size-sm);
  transition: all var(--transition-fast);
}

.form-input:focus,
.form-textarea:focus {
  outline: none;
  border-color: var(--accent-primary);
  box-shadow: var(--shadow-glow);
}

.form-textarea {
  resize: vertical;
  min-height: 150px;
}

.social-links {
  display: flex;
  justify-content: center;
  gap: var(--spacing-md);
  margin-top: var(--spacing-lg);
}

.social-link {
  width: 50px;
  height: 50px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: 12px;
  font-size: var(--font-size-lg);
  transition: all var(--transition-normal);
}

.social-link:hover {
  background: var(--accent-primary);
  transform: translateY(-5px);
  box-shadow: var(--shadow-glow);
}

/* Footer */
.footer {
  background: var(--bg-secondary);
  padding: var(--spacing-md) 0;
  text-align: center;
  border-top: 1px solid var(--glass-border);
}

.footer p {
  color: var(--text-secondary);
  font-size: var(--font-size-sm);
}

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

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes float {

  0%,
  100% {
    transform: translateY(0);
  }

  50% {
    transform: translateY(-20px);
  }
}

.scroll-reveal {
  opacity: 0;
  transform: translateY(50px);
  transition: all 0.8s ease;
}

.scroll-reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* Responsive Design */
@media (max-width: 768px) {
  .nav-links {
    position: fixed;
    top: 70px;
    left: 0;
    right: 0;
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    flex-direction: column;
    padding: var(--spacing-md);
    gap: var(--spacing-sm);
    transform: translateY(-100%);
    opacity: 0;
    transition: all var(--transition-normal);
    box-shadow: var(--shadow-lg);
  }

  .nav-links.active {
    transform: translateY(0);
    opacity: 1;
  }

  .mobile-menu-toggle {
    display: block;
  }

  .about-content {
    grid-template-columns: 1fr;
  }

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

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

  h1 {
    font-size: var(--font-size-2xl);
  }

  .section {
    padding: var(--spacing-lg) 0;
  }
}

@media (max-width: 480px) {
  .hero-cta {
    flex-direction: column;
  }

  .btn {
    width: 100%;
    justify-content: center;
  }

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

/* Reduced Motion */
@media (prefers-reduced-motion: reduce) {

  *,
  ::before,
  ::after {
    animation-delay: -1ms !important;
    animation-duration: 1ms !important;
    animation-iteration-count: 1 !important;
    background-attachment: initial !important;
    scroll-behavior: auto !important;
    transition-duration: 0s !important;
    transition-delay: 0s !important;
  }

  .scroll-reveal {
    opacity: 1 !important;
    transform: none !important;
  }
}