/* CSS Variables for Theme Management */
:root {
  /* Light Theme Colors */
  --bg-primary: #ffffff;
  --bg-secondary: #f8f9fa;
  --bg-tertiary: #e9ecef;
  --text-primary: #212529;
  --text-secondary: #6c757d;
  --text-accent: #1e90ff;
  --border-color: #dee2e6;
  --shadow: rgba(0, 0, 0, 0.1);
  --shadow-hover: rgba(0, 0, 0, 0.15);
  --gradient-primary: linear-gradient(135deg, #1e90ff, #00bfff);
  --gradient-secondary: linear-gradient(135deg, #6c757d, #495057);
}

.dark-theme {
  /* Dark Theme Colors */
  --bg-primary: #1a1a1a;
  --bg-secondary: #2d2d2d;
  --bg-tertiary: #404040;
  --text-primary: #ffffff;
  --text-secondary: #b0b0b0;
  --text-accent: #4da6ff;
  --border-color: #404040;
  --shadow: rgba(0, 0, 0, 0.3);
  --shadow-hover: rgba(0, 0, 0, 0.4);
  --gradient-primary: linear-gradient(135deg, #4da6ff, #1e90ff);
  --gradient-secondary: linear-gradient(135deg, #404040, #2d2d2d);
}

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

body {
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  line-height: 1.6;
  color: var(--text-primary);
  background-color: var(--bg-primary);
  transition: all 0.3s ease;
}

html {
  scroll-behavior: smooth;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

/* Header Styles */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  background: var(--bg-primary);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border-color);
  z-index: 1000;
  transition: all 0.3s ease;
}

.navbar {
  padding: 1rem 0;
}

.nav-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
}

.logo {
  height: 40px;
  width: auto;
  color: var(--text-accent);
}

.logo-text {
  font-size: 1.5rem;
  font-weight: bold;
  color: var(--text-primary);
}

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

.nav-menu a {
  text-decoration: none;
  color: var(--text-primary);
  font-weight: 500;
  transition: color 0.3s ease;
  position: relative;
}

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

.nav-menu a::after {
  content: '';
  position: absolute;
  bottom: -5px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--text-accent);
  transition: width 0.3s ease;
}

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

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

.language-selector {
  display: flex;
  gap: 5px;
}

.lang-btn {
  padding: 5px 10px;
  border: 1px solid var(--border-color);
  background: transparent;
  color: var(--text-secondary);
  border-radius: 4px;
  cursor: pointer;
  transition: all 0.3s ease;
  font-size: 0.9rem;
}

.lang-btn.active,
.lang-btn:hover {
  background: var(--text-accent);
  color: white;
  border-color: var(--text-accent);
}

.theme-toggle {
  background: none;
  border: 1px solid var(--border-color);
  color: var(--text-primary);
  padding: 8px;
  border-radius: 50%;
  cursor: pointer;
  transition: all 0.3s ease;
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.theme-toggle:hover {
  background: var(--bg-secondary);
  transform: rotate(180deg);
}

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

.hamburger span {
  width: 25px;
  height: 3px;
  background: var(--text-primary);
  transition: all 0.3s ease;
}

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

.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="grid" width="10" height="10" patternUnits="userSpaceOnUse"><path d="M 10 0 L 0 0 0 10" fill="none" stroke="rgba(255,255,255,0.1)" stroke-width="1"/></pattern></defs><rect width="100" height="100" fill="url(%23grid)"/></svg>');
  opacity: 0.3;
}

.hero-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
  position: relative;
  z-index: 1;
}

.hero-title {
  font-size: 3.5rem;
  font-weight: 700;
  margin-bottom: 1rem;
  line-height: 1.2;
}

.hero-subtitle {
  font-size: 1.2rem;
  margin-bottom: 2rem;
  opacity: 0.9;
}

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

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

.hero-graphic {
  font-size: 8rem;
  color: rgba(255, 255, 255, 0.8);
  animation: float 3s ease-in-out infinite;
}

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

/* Button Styles */
.btn {
  padding: 12px 24px;
  border: none;
  border-radius: 8px;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.3s ease;
  text-decoration: none;
  display: inline-block;
  text-align: center;
}

.btn-primary {
  background: white;
  color: var(--text-accent);
}

.btn-primary:hover {
  background: #f8f9fa;
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
}

.btn-secondary {
  background: transparent;
  color: white;
  border: 2px solid white;
}

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

/* Services Section */
.services {
  padding: 80px 0;
  background: var(--bg-secondary);
}

.section-title {
  text-align: center;
  font-size: 2.5rem;
  margin-bottom: 3rem;
  color: var(--text-primary);
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
}

.service-card {
  background: var(--bg-primary);
  padding: 2rem;
  border-radius: 12px;
  text-align: center;
  box-shadow: 0 4px 6px var(--shadow);
  transition: all 0.3s ease;
  border: 1px solid var(--border-color);
}

.service-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 8px 25px var(--shadow-hover);
}

.service-icon {
  font-size: 3rem;
  color: var(--text-accent);
  margin-bottom: 1rem;
}

.service-card h3 {
  font-size: 1.5rem;
  margin-bottom: 1rem;
  color: var(--text-primary);
}

.service-card p {
  color: var(--text-secondary);
  line-height: 1.6;
}

/* About Section */
.about {
  padding: 80px 0;
  background: var(--bg-primary);
}

.about-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
}

.about-text h2 {
  font-size: 2.5rem;
  margin-bottom: 1.5rem;
  color: var(--text-primary);
}

.about-text p {
  font-size: 1.1rem;
  color: var(--text-secondary);
  margin-bottom: 2rem;
  line-height: 1.7;
}

.stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
}

.stat {
  text-align: center;
}

.stat h3 {
  font-size: 2.5rem;
  color: var(--text-accent);
  margin-bottom: 0.5rem;
}

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

.datacenter-image {
  display: flex;
  justify-content: center;
  align-items: center;
  margin-top: 2rem;
  padding: 0;
  background: none;
  border-radius: 0;
  border: none;
  box-shadow: none;
}

.datacenter-photo {
  width: 100%;
  max-width: 800px;
  height: auto;
  filter: brightness(0.9);
  transition: all 0.3s ease;
  border-radius: 10px;
}

.datacenter-image:hover .datacenter-photo {
  transform: scale(1.02);
  filter: brightness(1.1);
}

/* Contact Section */
.contact {
  padding: 80px 0;
  background: var(--bg-secondary);
}

.contact-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
}

.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: 8px;
  box-shadow: 0 2px 4px var(--shadow);
}

.contact-item i {
  font-size: 1.5rem;
  color: var(--text-accent);
  width: 40px;
  text-align: center;
}

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

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

/* Form Styles */
.contact-form {
  background: var(--bg-primary);
  padding: 2rem;
  border-radius: 12px;
  box-shadow: 0 4px 6px var(--shadow);
}

.form-group {
  position: relative;
  margin-bottom: 1.5rem;
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 12px;
  border: 2px solid var(--border-color);
  border-radius: 8px;
  background: var(--bg-primary);
  color: var(--text-primary);
  font-size: 1rem;
  transition: all 0.3s ease;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--text-accent);
  box-shadow: 0 0 0 3px rgba(30, 144, 255, 0.1);
}

.form-group label {
  position: absolute;
  top: 12px;
  left: 12px;
  color: var(--text-secondary);
  transition: all 0.3s ease;
  pointer-events: none;
  background: var(--bg-primary);
  padding: 0 4px;
}

.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: -8px;
  font-size: 0.85rem;
  color: var(--text-accent);
}



.form-group textarea {
  resize: vertical;
  min-height: 100px;
}

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

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

.footer-section h4 {
  color: var(--text-primary);
  margin-bottom: 1rem;
  font-size: 1.2rem;
}

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

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

.footer-section ul li a {
  color: var(--text-secondary);
  text-decoration: none;
  transition: color 0.3s ease;
}

.footer-section ul li a:hover {
  color: var(--text-accent);
}

.footer-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 1rem;
}

.footer-section p {
  color: var(--text-secondary);
  line-height: 1.6;
}

.social-links {
  display: flex;
  gap: 1rem;
}

.social-links a {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  background: var(--bg-secondary);
  color: var(--text-secondary);
  border-radius: 50%;
  text-decoration: none;
  transition: all 0.3s ease;
}

.social-links a:hover {
  background: var(--text-accent);
  color: white;
  transform: translateY(-2px);
}

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

/* Desktop Styles */
@media (min-width: 769px) {
  .tech-gallery {
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
  }
  
  .tech-item {
    padding: 2rem;
  }
  
  .tech-icon {
    width: 100px;
    height: 75px;
  }
}

/* Responsive Design */
@media (max-width: 768px) {
  .nav-menu {
    display: none;
  }
  
  .hamburger {
    display: flex;
  }
  
  .hero-container {
    grid-template-columns: 1fr;
    text-align: center;
    gap: 2rem;
  }
  
  .hero-title {
    font-size: 2.5rem;
  }
  
  .about-content {
    grid-template-columns: 1fr;
    text-align: center;
  }
  
  .contact-content {
    grid-template-columns: 1fr;
  }
  
  .stats {
    grid-template-columns: 1fr;
    gap: 1rem;
  }
  
  .hero-buttons {
    justify-content: center;
  }
  
  .services-grid {
    grid-template-columns: 1fr;
  }
  
  .tech-gallery {
    grid-template-columns: 1fr;
    gap: 1.5rem;
    padding: 1rem;
  }
  
  .tech-icon {
    width: 60px;
    height: 45px;
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 15px;
  }
  
  .hero {
    padding: 100px 0 60px;
  }
  
  .hero-title {
    font-size: 2rem;
  }
  
  .section-title {
    font-size: 2rem;
  }
  
  .services,
  .about,
  .contact {
    padding: 60px 0;
  }
  
  .service-card,
  .contact-form {
    padding: 1.5rem;
  }
}

/* Animation Classes */
.fade-in {
  opacity: 0;
  transform: translateY(30px);
  transition: all 0.6s ease;
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* Loading Animation */
.loading {
  display: inline-block;
  width: 20px;
  height: 20px;
  border: 3px solid rgba(255, 255, 255, 0.3);
  border-radius: 50%;
  border-top-color: white;
  animation: spin 1s ease-in-out infinite;
}

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

/* reCAPTCHA Styles */
.g-recaptcha {
  margin: 1rem 0;
  display: block !important;
  visibility: visible !important;
  opacity: 1 !important;
  position: relative !important;
  z-index: 1 !important;
}

.g-recaptcha iframe {
  display: block !important;
  visibility: visible !important;
  opacity: 1 !important;
}

/* Success/Error Messages */
.message {
  padding: 1rem;
  border-radius: 8px;
  margin: 1rem 0;
  font-weight: 500;
}

.message.success {
  background: #d4edda;
  color: #155724;
  border: 1px solid #c3e6cb;
}

.message.error {
  background: #f8d7da;
  color: #721c24;
  border: 1px solid #f5c6cb;
}

.dark-theme .message.success {
  background: #1e4d2b;
  color: #a3d9a5;
  border-color: #2d5a3d;
}

.dark-theme .message.error {
  background: #4d1e24;
  color: #d9a3a8;
  border-color: #5a2d32;
}