/* CSS Variables for Theme Management */
:root {
  /* Light Theme Colors */
  --primary-color: #667eea;
  --primary-dark: #5a67d8;
  --secondary-color: #764ba2;
  --accent-color: #f093fb;
  --success-color: #48bb78;
  --warning-color: #ed8936;
  --error-color: #f56565;
  
  /* Light Theme Background & Text */
  --bg-primary: #ffffff;
  --bg-secondary: #f7fafc;
  --bg-tertiary: #edf2f7;
  --text-primary: #2d3748;
  --text-secondary: #4a5568;
  --text-muted: #718096;
  --border-color: #e2e8f0;
  --shadow-light: rgba(0, 0, 0, 0.1);
  --shadow-medium: rgba(0, 0, 0, 0.15);
  --shadow-heavy: rgba(0, 0, 0, 0.25);
  
  /* Gradients */
  --gradient-primary: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  --gradient-accent: linear-gradient(135deg, var(--accent-color), var(--primary-color));
  --gradient-hero: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  
  /* Spacing */
  --container-max-width: 1200px;
  --section-padding: 80px 0;
  --border-radius: 12px;
  --border-radius-lg: 20px;
  
  /* Typography */
  --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 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;
  
  /* Transitions */
  --transition-fast: 0.15s ease;
  --transition-base: 0.3s ease;
  --transition-slow: 0.5s ease;
}

/* Dark Theme Variables */
[data-theme="dark"] {
  --bg-primary: #1a202c;
  --bg-secondary: #2d3748;
  --bg-tertiary: #4a5568;
  --text-primary: #f7fafc;
  --text-secondary: #e2e8f0;
  --text-muted: #a0aec0;
  --border-color: #4a5568;
  --shadow-light: rgba(0, 0, 0, 0.3);
  --shadow-medium: rgba(0, 0, 0, 0.4);
  --shadow-heavy: rgba(0, 0, 0, 0.6);
}

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

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

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

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

/* Typography */
h1, h2, h3, h4, h5, h6 {
  font-weight: 600;
  line-height: 1.2;
  margin-bottom: 1rem;
}

h1 { font-size: var(--font-size-5xl); }
h2 { font-size: var(--font-size-4xl); }
h3 { font-size: var(--font-size-3xl); }
h4 { font-size: var(--font-size-2xl); }
h5 { font-size: var(--font-size-xl); }
h6 { font-size: var(--font-size-lg); }

p {
  margin-bottom: 1rem;
  /* color: var(--text-secondary); */
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 24px;
  border: none;
  border-radius: var(--border-radius);
  font-size: var(--font-size-base);
  font-weight: 500;
  text-decoration: none;
  cursor: pointer;
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
}

.btn-primary {
  background: var(--gradient-primary);
  color: white;
  box-shadow: 0 4px 15px var(--shadow-light);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 25px var(--shadow-medium);
}

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

.btn-secondary:hover {
  background: var(--primary-color);
  color: white;
  transform: translateY(-2px);
}

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

.btn-outline:hover {
  background: var(--primary-color);
  color: white;
  border-color: var(--primary-color);
}

/* Header */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border-color);
  z-index: 1000;
  transition: all var(--transition-base);
}

[data-theme="dark"] .header {
  background: rgba(26, 32, 44, 0.95);
}

.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 20px;
  max-width: var(--container-max-width);
  margin: 0 auto;
}

.nav-logo h2 {
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin: 0;
}

.nav-menu {
  display: flex;
  list-style: none;
  gap: 2rem;
  margin: 0;
}

.nav-menu a {
  text-decoration: none;
  color: var(--text-primary);
  font-weight: 500;
  transition: color var(--transition-base);
  position: relative;
}

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

.nav-menu a::after {
  content: '';
  position: absolute;
  bottom: -5px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--gradient-primary);
  transition: width var(--transition-base);
}

.nav-menu a:hover::after {
  width: 100%;
}

.nav-controls {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.theme-toggle,
.lang-toggle {
  background: none;
  border: none;
  color: var(--text-primary);
  cursor: pointer;
  padding: 8px;
  border-radius: var(--border-radius);
  transition: all var(--transition-base);
}

.theme-toggle:hover,
.lang-toggle:hover {
  background: var(--bg-secondary);
  transform: scale(1.1);
}

.lang-text {
  font-weight: 600;
  font-size: var(--font-size-sm);
}

.hamburger {
  display: none;
  flex-direction: column;
  cursor: pointer;
  gap: 4px;
}

.hamburger span {
  width: 25px;
  height: 3px;
  background: var(--text-primary);
  transition: all var(--transition-base);
}

/* Hero Section */
.hero {
  padding: 120px 0 80px;
  background: var(--gradient-hero);
  color: white;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="grain" width="100" height="100" patternUnits="userSpaceOnUse"><circle cx="50" cy="50" r="1" fill="rgba(255,255,255,0.1)"/></pattern></defs><rect width="100" height="100" fill="url(%23grain)"/></svg>');
  opacity: 0.2;
}

.hero-container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
  max-width: var(--container-max-width);
  margin: 0 auto;
  padding: 0 20px;
  position: relative;
  z-index: 1;
}

.hero-title {
  font-size: var(--font-size-5xl);
  font-weight: 700;
  margin-bottom: 1.5rem;
  line-height: 1.1;
  text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
}

.highlight {
  background: linear-gradient(45deg, #f093fb, #f5576c);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  text-shadow: none;
  filter: drop-shadow(2px 2px 4px rgba(0, 0, 0, 0.3));
}

.hero-subtitle {
  font-size: var(--font-size-lg);
  margin-bottom: 2rem;
  opacity: 0.95;
  line-height: 1.6;
  text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.3);
  font-weight: 400;
}

.hero-cta {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

.hero-cta .btn {
  font-weight: 600;
  padding: 14px 28px;
  font-size: var(--font-size-base);
  text-shadow: none;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
}

.hero-cta .btn-primary {
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  border: 2px solid rgba(255, 255, 255, 0.2);
}

.hero-cta .btn-primary:hover {
  background: linear-gradient(135deg, #5a67d8 0%, #6b46c1 100%);
  transform: translateY(-3px);
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.3);
}

.hero-cta .btn-secondary {
  background: rgba(255, 255, 255, 0.15);
  color: white;
  border: 2px solid rgba(255, 255, 255, 0.4);
  backdrop-filter: blur(10px);
}

.hero-cta .btn-secondary:hover {
  background: rgba(255, 255, 255, 0.25);
  color: white;
  border-color: rgba(255, 255, 255, 0.6);
  transform: translateY(-3px);
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.3);
}

/* Code Animation */
.code-animation {
  background: rgba(0, 0, 0, 0.2);
  border-radius: var(--border-radius-lg);
  padding: 2rem;
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.code-lines {
  font-family: 'Courier New', monospace;
  font-size: var(--font-size-sm);
  line-height: 1.8;
}

.code-line {
  margin-bottom: 0.5rem;
  animation: typewriter 3s steps(40) infinite;
}

.code-line.indent {
  padding-left: 2rem;
}

.code-keyword { color: #ff79c6; }
.code-variable { color: #8be9fd; }
.code-property { color: #50fa7b; }
.code-string { color: #f1fa8c; }

@keyframes typewriter {
  0%, 50% { opacity: 1; }
  51%, 100% { opacity: 0.7; }
}

/* Stats Section */
.stats {
  padding: 60px 0;
  background: var(--bg-secondary);
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 2rem;
  text-align: center;
}

.stat-item {
  padding: 2rem;
  background: var(--bg-primary);
  border-radius: var(--border-radius-lg);
  box-shadow: 0 4px 20px var(--shadow-light);
  transition: transform var(--transition-base);
}

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

.stat-number {
  font-size: var(--font-size-4xl);
  font-weight: 700;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 0.5rem;
}

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

/* Section Styles */
section {
  padding: var(--section-padding);
}

.section-header {
  text-align: center;
  margin-bottom: 4rem;
}

.section-title {
  position: relative;
  display: inline-block;
}

.section-title::after {
  content: '';
  position: absolute;
  bottom: -10px;
  left: 50%;
  transform: translateX(-50%);
  width: 60px;
  height: 4px;
  background: var(--gradient-primary);
  border-radius: 2px;
}

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

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

.about-content {
  max-width: 800px;
  margin: 0 auto;
  text-align: center;
}

.about-text h3 {
  color: var(--primary-color);
  margin-bottom: 1rem;
}

.about-text p {
  font-size: var(--font-size-lg);
  margin-bottom: 3rem;
}

.skills-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
  gap: 1.5rem;
  margin-top: 2rem;
}

.skill-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 1.5rem;
  background: var(--bg-secondary);
  border-radius: var(--border-radius);
  transition: all var(--transition-base);
}

.skill-item:hover {
  transform: translateY(-5px);
  box-shadow: 0 8px 25px var(--shadow-light);
}

.skill-item i {
  font-size: 2.5rem;
  color: var(--primary-color);
  margin-bottom: 1rem;
}

.skill-item span {
  font-weight: 500;
  color: var(--text-primary);
}

/* Services Section */
.services {
  background: var(--bg-secondary);
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: 2rem;
}

.service-card {
  background: var(--bg-primary);
  padding: 2.5rem;
  border-radius: var(--border-radius-lg);
  box-shadow: 0 4px 20px var(--shadow-light);
  transition: all var(--transition-base);
  position: relative;
  text-align: center;
}

.service-card:hover {
  transform: translateY(-10px);
  box-shadow: 0 20px 40px var(--shadow-medium);
}

.service-card.featured {
  border: 2px solid var(--primary-color);
  transform: scale(1.05);
}

.service-badge {
  position: absolute;
  top: -10px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--gradient-primary);
  color: white;
  padding: 0.5rem 1rem;
  border-radius: 20px;
  font-size: var(--font-size-sm);
  font-weight: 600;
}

.service-icon {
  width: 80px;
  height: 80px;
  margin: 0 auto 1.5rem;
  background: var(--gradient-primary);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
}

.service-icon i {
  font-size: 2rem;
  color: white;
}

.service-card h3 {
  margin-bottom: 1rem;
  color: var(--text-primary);
}

.service-card p {
  margin-bottom: 2rem;
  color: var(--text-secondary);
}

.service-features {
  list-style: none;
  margin-bottom: 2rem;
  text-align: left;
}

.service-features li {
  padding: 0.5rem 0;
  color: var(--text-secondary);
  position: relative;
  padding-left: 1.5rem;
}

.service-features li::before {
  content: '✓';
  position: absolute;
  left: 0;
  color: var(--success-color);
  font-weight: bold;
}

.service-price {
  margin-bottom: 2rem;
}

.service-price span {
  font-size: var(--font-size-2xl);
  font-weight: 700;
  color: var(--primary-color);
}

.service-price .price-mxn,
.service-price .price-usd {
  display: block;
  margin-bottom: 0.5rem;
}

.price-usd {
  display: none;
}

[data-lang="en"] .price-mxn {
  display: none;
}

[data-lang="en"] .price-usd {
  display: inline;
}

/* Benefits Section */
.benefits {
  background: var(--bg-primary);
}

.benefits-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 2rem;
}

.benefit-item {
  text-align: center;
  padding: 2rem;
}

.benefit-icon {
  width: 80px;
  height: 80px;
  margin: 0 auto 1.5rem;
  background: var(--gradient-accent);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
}

.benefit-icon i {
  font-size: 2rem;
  color: white;
}

.benefit-item h3 {
  margin-bottom: 1rem;
  color: var(--text-primary);
}

.benefit-item p {
  color: var(--text-secondary);
}

/* Portfolio Section */
.portfolio {
  background: var(--bg-secondary);
}

.portfolio-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: 2rem;
}

.portfolio-item {
  background: var(--bg-primary);
  border-radius: var(--border-radius-lg);
  overflow: hidden;
  box-shadow: 0 4px 20px var(--shadow-light);
  transition: all var(--transition-base);
}

.portfolio-item:hover {
  transform: translateY(-10px);
  box-shadow: 0 20px 40px var(--shadow-medium);
}

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

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

.portfolio-overlay {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(102, 126, 234, 0.9);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: opacity var(--transition-base);
}

.portfolio-item:hover .portfolio-overlay {
  opacity: 1;
}

.portfolio-item:hover .portfolio-image img {
  transform: scale(1.1);
}

.portfolio-link {
  color: white;
  font-size: 2rem;
  text-decoration: none;
  padding: 1rem;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.2);
  transition: all var(--transition-base);
}

.portfolio-link:hover {
  background: rgba(255, 255, 255, 0.3);
  transform: scale(1.1);
}

.portfolio-content {
  padding: 2rem;
}

.portfolio-content h3 {
  margin-bottom: 1rem;
  color: var(--text-primary);
}

.portfolio-content p {
  margin-bottom: 1.5rem;
  color: var(--text-secondary);
}

.portfolio-tech {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.portfolio-tech span {
  background: var(--bg-secondary);
  color: var(--text-primary);
  padding: 0.25rem 0.75rem;
  border-radius: 20px;
  font-size: var(--font-size-sm);
  font-weight: 500;
}

/* Testimonials Section */
.testimonials {
  background: var(--bg-primary);
}

.testimonials-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: 2rem;
}

.testimonial-item {
  background: var(--bg-secondary);
  padding: 2.5rem;
  border-radius: var(--border-radius-lg);
  box-shadow: 0 4px 20px var(--shadow-light);
  transition: all var(--transition-base);
}

.testimonial-item:hover {
  transform: translateY(-5px);
  box-shadow: 0 15px 35px var(--shadow-medium);
}

.testimonial-content {
  margin-bottom: 2rem;
}

.testimonial-content p {
  font-style: italic;
  font-size: var(--font-size-lg);
  color: var(--text-secondary);
  line-height: 1.6;
}

.testimonial-author h4 {
  color: var(--text-primary);
  margin-bottom: 0.25rem;
}

.testimonial-author span {
  color: var(--text-muted);
  font-size: var(--font-size-sm);
}

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

.contact-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  max-width: 1000px;
  margin: 0 auto;
}

.contact-info {
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

.contact-item {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 1.5rem;
  background: var(--bg-primary);
  border-radius: var(--border-radius);
  box-shadow: 0 4px 15px var(--shadow-light);
}

.contact-icon {
  width: 60px;
  height: 60px;
  background: var(--gradient-primary);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.contact-icon i {
  font-size: 1.5rem;
  color: white;
}

.contact-item h3 {
  margin-bottom: 0.25rem;
  color: var(--text-primary);
}

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

/* Contact Form */
.contact-form {
  background: var(--bg-primary);
  padding: 2.5rem;
  border-radius: var(--border-radius-lg);
  box-shadow: 0 4px 20px var(--shadow-light);
}

.form-group {
  position: relative;
  margin-bottom: 2rem;
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 1rem;
  border: 2px solid var(--border-color);
  border-radius: var(--border-radius);
  background: var(--bg-primary);
  color: var(--text-primary);
  font-size: var(--font-size-base);
  transition: all var(--transition-base);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

.form-group label {
  position: absolute;
  top: 1rem;
  left: 1rem;
  color: var(--text-muted);
  font-size: var(--font-size-base);
  transition: all var(--transition-base);
  pointer-events: none;
}

.form-group input:focus + label,
.form-group input:valid + label,
.form-group select:focus + label,
.form-group select:valid + label,
.form-group textarea:focus + label,
.form-group textarea:valid + label {
  top: -0.5rem;
  left: 0.75rem;
  font-size: var(--font-size-sm);
  color: var(--primary-color);
  background: var(--bg-primary);
  padding: 0 0.5rem;
}

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

/* Footer */
.footer {
  background: var(--bg-tertiary);
  padding: 3rem 0 1rem;
}

.footer-content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 2rem;
  margin-bottom: 2rem;
}

.footer-brand h3 {
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 1rem;
}

.footer-brand p {
  color: var(--text-secondary);
}

.footer-links h4,
.footer-contact h4 {
  color: var(--text-primary);
  margin-bottom: 1rem;
}

.footer-links ul {
  list-style: none;
}

.footer-links li {
  margin-bottom: 0.5rem;
}

.footer-links a {
  color: var(--text-secondary);
  text-decoration: none;
  transition: color var(--transition-base);
}

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

.footer-contact p {
  color: var(--text-secondary);
  margin-bottom: 0.5rem;
}

.footer-bottom {
  text-align: center;
  padding-top: 2rem;
  border-top: 1px solid var(--border-color);
}

.footer-bottom p {
  color: var(--text-muted);
  margin: 0;
}

/* WhatsApp Float Button */
.whatsapp-float {
  position: fixed;
  bottom: 20px;
  right: 20px;
  width: 60px;
  height: 60px;
  background: #25d366;
  border-radius: 50%;
  display: none;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 1.5rem;
  text-decoration: none;
  box-shadow: 0 4px 20px rgba(37, 211, 102, 0.4);
  z-index: 1000;
  transition: all var(--transition-base);
}

.whatsapp-float:hover {
  transform: scale(1.1);
  box-shadow: 0 8px 30px rgba(37, 211, 102, 0.6);
}

/* Responsive Design */
@media (max-width: 768px) {
  /* Show WhatsApp button on mobile */
  .whatsapp-float {
    display: flex;
  }
  
  /* Navigation */
  .nav-menu {
    position: fixed;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--bg-primary);
    flex-direction: column;
    padding: 2rem;
    box-shadow: 0 4px 20px var(--shadow-medium);
    transform: translateY(-100%);
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-base);
  }
  
  .nav-menu.active {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
  }
  
  .hamburger {
    display: flex;
  }
  
  .hamburger.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
  }
  
  .hamburger.active span:nth-child(2) {
    opacity: 0;
  }
  
  .hamburger.active span:nth-child(3) {
    transform: rotate(-45deg) translate(7px, -6px);
  }
  
  /* Hero Section */
  .hero-container {
    grid-template-columns: 1fr;
    text-align: center;
    gap: 2rem;
  }
  
  .hero-title {
    font-size: var(--font-size-4xl);
  }
  
  .hero-cta {
    justify-content: center;
  }
  
  /* Sections */
  section {
    padding: 60px 0;
  }
  
  .section-header {
    margin-bottom: 3rem;
  }
  
  /* Services */
  .services-grid {
    grid-template-columns: 1fr;
  }
  
  .service-card.featured {
    transform: none;
  }
  
  /* Contact */
  .contact-content {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
  
  /* Stats */
  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  /* Skills */
  .skills-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (max-width: 480px) {
  /* Typography */
  .hero-title {
    font-size: var(--font-size-3xl);
  }
  
  h2 {
    font-size: var(--font-size-3xl);
  }
  
  /* Container */
  .container {
    padding: 0 15px;
  }
  
  /* Navigation */
  .nav-container {
    padding: 1rem 15px;
  }
  
  /* Hero */
  .hero {
    padding: 100px 0 60px;
  }
  
  /* Cards */
  .service-card,
  .portfolio-item,
  .testimonial-item {
    margin: 0 10px;
  }
  
  /* Stats */
  .stats-grid {
    grid-template-columns: 1fr;
  }
  
  /* Skills */
  .skills-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  /* Form */
  .contact-form {
    padding: 1.5rem;
  }
}

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

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

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

/* Scroll animations */
.animate-on-scroll {
  opacity: 0;
  transform: translateY(30px);
  transition: all 0.6s ease;
}

.animate-on-scroll.animated {
  opacity: 1;
  transform: translateY(0);
}

/* Loading states */
.loading {
  opacity: 0.7;
  pointer-events: none;
}

/* Focus styles for accessibility */
.btn:focus,
input:focus,
select:focus,
textarea:focus,
button:focus {
  outline: 2px solid var(--primary-color);
  outline-offset: 2px;
}

/* Print styles */
@media print {
  .header,
  .whatsapp-float {
    display: none;
  }
  
  .hero {
    background: none;
    color: black;
  }
  
  .btn {
    border: 1px solid black;
    background: none;
    color: black;
  }
}