/* Variables */
:root {
  --primary-color: #1e3a8a;
  --secondary-color: #3b82f6;
  --accent-color: #f59e0b;
  --text-dark: #1f2937;
  --text-light: #6b7280;
  --bg-light: #f8fafc;
  --white: #ffffff;
  --dark: #0f172a;
  --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
  --border-radius: 8px;
}

* {
  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-dark);
  overflow-x: hidden;
}

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

/* Navigation */
.navbar {
  background: rgba(255, 255, 255, 0.98);
  backdrop-filter: blur(20px);
  box-shadow: 0 2px 20px rgba(0, 0, 0, 0.08);
  position: fixed;
  width: 100%;
  top: 0;
  z-index: 1000;
  transition: all 0.3s ease;
}

.nav-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0.8rem 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo img {
  height: 50px;
  transition: transform 0.3s ease;
}

.logo img:hover {
  transform: scale(1.02);
}

.nav-links {
  display: flex;
  list-style: none;
  gap: 2.5rem;
}

.nav-links a {
  color: var(--text-dark);
  text-decoration: none;
  font-weight: 600;
  font-size: 0.9rem;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  transition: all 0.3s ease;
  position: relative;
  padding: 0.5rem 0;
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 3px;
  background: var(--accent-color);
  transition: width 0.3s ease;
}

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

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

.mobile-menu {
  display: none;
  font-size: 1.5rem;
  cursor: pointer;
  color: var(--primary-color);
}

/* Hero with Slider */
.hero {
  position: relative;
  height: 100vh;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
}

.slider-container {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 1;
}

.slider {
  position: relative;
  width: 100%;
  height: 100%;
}

.slide {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  opacity: 0;
  transition: opacity 1.2s ease-in-out;
}

.slide.active {
  opacity: 1;
}

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

.slider-prev,
.slider-next {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  background: rgba(255, 255, 255, 0.2);
  color: white;
  border: none;
  width: 50px;
  height: 50px;
  border-radius: 50%;
  font-size: 18px;
  cursor: pointer;
  z-index: 3;
  transition: all 0.3s ease;
  backdrop-filter: blur(5px);
}

.slider-prev { left: 20px; }
.slider-next { right: 20px; }

.slider-prev:hover,
.slider-next:hover {
  background: rgba(255, 255, 255, 0.3);
  transform: translateY(-50%) scale(1.1);
}

.slider-indicators {
  position: absolute;
  bottom: 30px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: 15px;
  z-index: 3;
}

.indicator {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.5);
  cursor: pointer;
  transition: all 0.3s ease;
}

.indicator.active {
  background: white;
  transform: scale(1.2);
}

.hero-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, rgba(30, 58, 138, 0.9), rgba(15, 23, 42, 0.95));
  z-index: 2;
}

.hero-content {
  position: relative;
  z-index: 3;
  text-align: center;
  color: var(--white);
  max-width: 900px;
  padding: 0 20px;
}

.hero h1 {
  font-size: 4rem;
  margin-bottom: 1.5rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 3px;
  text-shadow: 2px 2px 8px rgba(0, 0, 0, 0.5);
  animation: fadeInUp 1s ease;
}

.hero p {
  font-size: 1.3rem;
  margin-bottom: 3rem;
  line-height: 1.8;
  font-weight: 300;
  max-width: 700px;
  margin-left: auto;
  margin-right: auto;
  text-shadow: 1px 1px 4px rgba(0, 0, 0, 0.3);
  animation: fadeInUp 1s ease 0.2s;
  animation-fill-mode: both;
}

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

.cta-buttons {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
  animation: fadeInUp 1s ease 0.4s;
  animation-fill-mode: both;
}

.btn {
  padding: 16px 40px;
  border: none;
  border-radius: 4px;
  font-size: 14px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  cursor: pointer;
  text-decoration: none;
  display: inline-block;
  transition: all 0.3s ease;
  text-align: center;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
}

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

.btn-primary:hover {
  background: #d97706;
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(245, 158, 11, 0.4);
}

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

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

/* Sections */
.section {
  padding: 5rem 2rem;
}

.section-light {
  background: var(--bg-light);
}

.section-dark {
  background: var(--dark);
  color: var(--white);
}

.section-title {
  text-align: center;
  font-size: 2.5rem;
  margin-bottom: 1rem;
  color: var(--primary-color);
  font-weight: 700;
}

.section-dark .section-title {
  color: var(--white);
}

.section-subtitle {
  text-align: center;
  color: var(--text-light);
  margin-bottom: 3rem;
  font-size: 1.1rem;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

/* Cards */
.card {
  background: var(--white);
  padding: 2rem;
  border-radius: var(--border-radius);
  box-shadow: var(--shadow);
  transition: all 0.3s ease;
  border: 1px solid rgba(0, 0, 0, 0.05);
}

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

.card-icon {
  font-size: 2.5rem;
  color: var(--primary-color);
  margin-bottom: 1.5rem;
  text-align: center;
}

.card h3 {
  font-size: 1.3rem;
  margin-bottom: 1rem;
  color: var(--text-dark);
  font-weight: 600;
}

.card p {
  color: var(--text-light);
  line-height: 1.7;
}

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

.grid-3 {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 2rem;
}

.grid-4 {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 1.5rem;
}

/* Form */
.form-group {
  margin-bottom: 1.5rem;
}

.form-group label {
  display: block;
  margin-bottom: 0.5rem;
  font-weight: 600;
  color: var(--text-dark);
}

.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  padding: 0.75rem;
  border: 2px solid #e5e7eb;
  border-radius: var(--border-radius);
  font-size: 1rem;
  transition: border-color 0.3s ease;
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  outline: none;
  border-color: var(--primary-color);
}

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

/* Contact */
.contact-item {
  display: flex;
  align-items: flex-start;
  margin-bottom: 1.5rem;
}

.contact-item i {
  font-size: 1.5rem;
  color: var(--primary-color);
  margin-right: 1rem;
  margin-top: 0.25rem;
  min-width: 30px;
}

.contact-item h4 {
  font-size: 1.1rem;
  margin-bottom: 0.25rem;
  color: var(--text-dark);
}

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

/* Footer */
.footer {
  background: var(--dark);
  color: var(--white);
  padding: 3rem 2rem 1rem;
}

.footer-content {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 2rem;
  margin-bottom: 2rem;
}

.footer-section h3 {
  margin-bottom: 1rem;
  color: var(--accent-color);
  font-size: 1.2rem;
}

.footer-section p,
.footer-section a {
  color: #9ca3af;
  text-decoration: none;
  line-height: 1.8;
  font-size: 0.95rem;
}

.footer-section a:hover {
  color: var(--white);
}

.footer-bottom {
  border-top: 1px solid #374151;
  margin-top: 2rem;
  padding-top: 2rem;
  text-align: center;
  color: #9ca3af;
  font-size: 0.9rem;
}

/* Responsive */
@media (max-width: 768px) {
  .nav-links {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--white);
    flex-direction: column;
    padding: 1rem;
    box-shadow: var(--shadow);
  }

  .nav-links.active {
    display: flex;
  }

  .mobile-menu {
    display: block;
  }

  .hero h1 {
    font-size: 2.5rem;
  }

  .hero p {
    font-size: 1.1rem;
  }

  .slider-prev,
  .slider-next {
    width: 40px;
    height: 40px;
    font-size: 16px;
  }

  .slider-prev { left: 10px; }
  .slider-next { right: 10px; }

  .slider-indicators {
    bottom: 20px;
    gap: 10px;
  }

  .indicator {
    width: 10px;
    height: 10px;
  }

  .cta-buttons {
    flex-direction: column;
    align-items: center;
  }

  .btn {
    width: 100%;
    max-width: 280px;
  }

  .grid-2,
  .grid-3,
  .grid-4 {
    grid-template-columns: 1fr;
  }
}

/* Animations */
.fade-in-up {
  animation: fadeInUp 0.6s ease forwards;
}

.text-center {
  text-align: center;
}