/* VARIABLES & RESET */
:root {
  --primary-blue: #0A3D73; /* Premium dark blue */
  --secondary-blue: #1D6FB6; /* Softer blue */
  --accent-blue: #EBF4FC; /* Light background blue */
  --white: #FFFFFF;
  --light-gray: #F5F7FA;
  --dark-gray: #333333;
  --text-color: #4A5568;
  --border-color: #E2E8F0;
  
  --font-main: 'Inter', system-ui, -apple-system, sans-serif;
  --transition-smooth: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
  --shadow-sm: 0 2px 4px rgba(0,0,0,0.05);
  --shadow-md: 0 4px 6px rgba(0,0,0,0.07);
  --shadow-lg: 0 10px 25px rgba(0,0,0,0.1);
}

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

body {
  font-family: var(--font-main);
  color: var(--text-color);
  background-color: var(--white);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

a {
  text-decoration: none;
  color: inherit;
  transition: var(--transition-smooth);
}

ul {
  list-style: none;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

/* TYPOGRAPHY */
h1, h2, h3, h4, h5, h6 {
  color: var(--primary-blue);
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: 1rem;
}

h1 { font-size: clamp(2rem, 5vw, 3.5rem); }
h2 { font-size: clamp(1.75rem, 4vw, 2.5rem); }
h3 { font-size: clamp(1.25rem, 3vw, 1.75rem); }
p { margin-bottom: 1rem; }

/* LAYOUT & CONTAINERS */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

section {
  padding: 5rem 0;
}

.section-light { background-color: var(--light-gray); }
.section-blue { background-color: var(--primary-blue); color: var(--white); }
.section-blue h2, .section-blue h3, .section-blue p { color: var(--white); }

/* BUTTONS */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.875rem 1.75rem;
  border-radius: 50px;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition-smooth);
  text-align: center;
  border: none;
  gap: 0.5rem;
}

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

.btn-primary:hover {
  background-color: var(--secondary-blue);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

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

.btn-secondary:hover {
  background-color: var(--primary-blue);
  color: var(--white);
}

/* HEADER & NAVIGATION */
.header {
  background-color: var(--white);
  box-shadow: var(--shadow-sm);
  position: sticky;
  top: 0;
  z-index: 1000;
}

.nav-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 1.5rem;
  max-width: 1200px;
  margin: 0 auto;
}

.logo {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--primary-blue);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}
.logo span { color: var(--secondary-blue); }

.nav-menu {
  display: flex;
  gap: 2rem;
  align-items: center;
}

.nav-link {
  font-weight: 500;
  color: var(--dark-gray);
  font-size: 0.95rem;
}

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

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

/* HERO SECTION */
.hero {
  position: relative;
  min-height: 80vh;
  display: flex;
  align-items: center;
  background-color: var(--primary-blue);
  color: var(--white);
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.4;
  z-index: 0;
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 600px;
}

.hero h1 {
  color: var(--white);
  margin-bottom: 1.5rem;
}

.hero p {
  font-size: 1.125rem;
  margin-bottom: 2rem;
  opacity: 0.9;
}

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

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

.card {
  background: var(--white);
  border-radius: 12px;
  padding: 2rem;
  box-shadow: var(--shadow-sm);
  transition: var(--transition-smooth);
  border: 1px solid var(--border-color);
  height: 100%;
  display: flex;
  flex-direction: column;
}

.card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
  border-color: var(--accent-blue);
}

.card-icon {
  width: 50px;
  height: 50px;
  background-color: var(--accent-blue);
  color: var(--secondary-blue);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  margin-bottom: 1.5rem;
}

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

.form-label {
  display: block;
  font-weight: 500;
  margin-bottom: 0.5rem;
  color: var(--dark-gray);
}

.form-control {
  width: 100%;
  padding: 0.875rem 1rem;
  border: 1px solid var(--border-color);
  border-radius: 8px;
  font-family: inherit;
  font-size: 1rem;
  transition: var(--transition-smooth);
}

.form-control:focus {
  outline: none;
  border-color: var(--secondary-blue);
  box-shadow: 0 0 0 3px var(--accent-blue);
}

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

/* FLOATING WHATSAPP */
.whatsapp-float {
  position: fixed;
  width: 60px;
  height: 60px;
  bottom: 30px;
  right: 30px;
  background-color: #25d366;
  color: #FFF;
  border-radius: 50px;
  text-align: center;
  font-size: 30px;
  box-shadow: var(--shadow-lg);
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition-smooth);
}

.whatsapp-float:hover {
  background-color: #128C7E;
  transform: scale(1.1);
}

/* FOOTER */
.footer {
  background-color: var(--primary-blue);
  color: var(--white);
  padding: 4rem 0 2rem;
}

.footer-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 3rem;
  margin-bottom: 3rem;
}

.footer-col h4 {
  color: var(--white);
  margin-bottom: 1.5rem;
}

.footer-link {
  display: block;
  color: rgba(255,255,255,0.7);
  margin-bottom: 0.75rem;
}

.footer-link:hover {
  color: var(--white);
  transform: translateX(5px);
}

.footer-bottom {
  text-align: center;
  padding-top: 2rem;
  border-top: 1px solid rgba(255,255,255,0.1);
  color: rgba(255,255,255,0.5);
  font-size: 0.875rem;
}

/* MOBILE RESPONSIVE */
@media (max-width: 768px) {
  section { padding: 3rem 0; }
  
  .container { padding: 0 1.25rem; }

  .nav-menu {
    position: fixed;
    top: 65px;
    left: -100%;
    width: 100%;
    height: calc(100vh - 65px);
    background-color: var(--white);
    flex-direction: column;
    padding: 2rem;
    transition: var(--transition-smooth);
    box-shadow: var(--shadow-sm);
    z-index: 999;
    align-items: stretch;
    text-align: center;
  }
  
  .nav-menu.active {
    left: 0;
  }
  
  .nav-link {
    font-size: 1.1rem;
    padding: 0.75rem 0;
    border-bottom: 1px solid var(--light-gray);
  }
  
  .mobile-menu-btn {
    display: block;
  }
  
  .hero {
    min-height: 60vh;
    text-align: center;
    padding-top: 2rem;
  }
  
  .hero h1 { font-size: 2.2rem; }
  .hero p { font-size: 1rem; margin-bottom: 1.5rem; }
  
  .hero-buttons {
    flex-direction: column;
    gap: 0.8rem;
  }
  
  .hero-buttons .btn { width: 100%; }
  
  .whatsapp-float {
    width: 50px;
    height: 50px;
    bottom: 20px;
    right: 20px;
    font-size: 25px;
  }

  /* Force grids to 1 column on mobile */
  .card-grid, 
  .features-grid, 
  .service-list-grid, 
  .destinations-grid,
  .history-grid,
  .contact-grid,
  .tickets-grid {
    grid-template-columns: 1fr !important;
    gap: 2rem !important;
  }
}

/* SCROLL ANIMATIONS */
.animate-on-scroll {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.8s ease-out, transform 0.8s ease-out;
  will-change: opacity, transform;
}

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

.delay-100 { transition-delay: 0.1s; }
.delay-200 { transition-delay: 0.2s; }
.delay-300 { transition-delay: 0.3s; }

/* BILLETS GRID & CARDS */
.tickets-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
  margin-top: 3rem;
}

.ticket-card {
  background: var(--white);
  border-radius: 12px;
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border-color);
  transition: var(--transition-smooth);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  text-align: center;
  position: relative;
}

.fomo-badge {
  position: absolute;
  top: 10px;
  right: 10px;
  background-color: #e53e3e;
  color: var(--white);
  padding: 0.35rem 0.85rem;
  border-radius: 20px;
  font-size: 0.85rem;
  font-weight: 700;
  box-shadow: 0 4px 6px rgba(229, 62, 62, 0.4);
  animation: pulse 2s infinite;
  z-index: 10;
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

@keyframes pulse {
  0% { transform: scale(1); box-shadow: 0 0 0 0 rgba(229, 62, 62, 0.7); }
  70% { transform: scale(1.05); box-shadow: 0 0 0 10px rgba(229, 62, 62, 0); }
  100% { transform: scale(1); box-shadow: 0 0 0 0 rgba(229, 62, 62, 0); }
}

.ticket-img {
  width: 100%;
  height: 200px;
  object-fit: cover;
  border-bottom: 3px solid var(--secondary-blue);
}

.ticket-content {
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  flex-grow: 1;
  justify-content: space-between;
}

.ticket-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
  border-color: var(--secondary-blue);
}

.ticket-route {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--primary-blue);
  margin-bottom: 0.5rem;
}

.ticket-airline {
  font-size: 0.9rem;
  color: var(--text-color);
  margin-bottom: 1rem;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
}

.ticket-price {
  font-size: 1.625rem;
  font-weight: 800;
  color: var(--primary-blue);
  background-color: var(--accent-blue);
  padding: 0.5rem 1.25rem;
  border-radius: 8px;
  display: inline-block;
  margin: 1.25rem 0;
}

.ticket-info {
  font-size: 0.85rem;
  color: #666;
  margin-bottom: 1.5rem;
  padding: 0.5rem;
  background: var(--light-gray);
  border-radius: 6px;
}

/* MODAL STYLES */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.6);
  z-index: 1000;
  display: flex;
  justify-content: center;
  align-items: center;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.3s ease, visibility 0.3s ease;
  padding: 1rem;
}

.modal-overlay.active {
  opacity: 1;
  visibility: visible;
}

.modal-content {
  background: var(--white);
  width: 100%;
  max-width: 800px;
  max-height: 90vh;
  overflow-y: auto;
  border-radius: 12px;
  padding: 2rem;
  position: relative;
  transform: translateY(20px);
  transition: transform 0.3s ease;
  box-shadow: var(--shadow-lg);
}

.modal-overlay.active .modal-content {
  transform: translateY(0);
}

.modal-close {
  position: absolute;
  top: 1.5rem;
  right: 1.5rem;
  background: none;
  border: none;
  font-size: 1.5rem;
  color: var(--text-color);
  cursor: pointer;
  transition: color 0.2s ease;
}

.modal-close:hover {
  color: var(--primary-blue);
}

.modal-header {
  margin-bottom: 2rem;
  text-align: center;
  padding-right: 2rem; /* space for close button */
}

.modal-header h2 {
  color: var(--primary-blue);
  font-size: 1.5rem;
  margin-bottom: 0.5rem;
}