/* ============================================
   AEROSTAT DESIGN SYSTEM - Futuristic Birdhouse Design
   ============================================ */

:root {
  /* Color Palette */
  --color-sky-white: #F0F4F8;
  --color-aviary-teal: #2D5F5D;
  --color-warning-sulphur: #E6FB04;
  --color-carbon-mesh: #1C1C1E;
  --color-text-primary: #1C1C1E;
  --color-text-secondary: #4A5568;
  --color-bg-overlay: rgba(240, 244, 248, 0.95);
  
  /* Typography */
  --font-header: 'Exo 2', sans-serif;
  --font-body: 'Space Grotesk', sans-serif;
  
  /* Spacing */
  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-2xl: 3rem;
  --space-3xl: 4rem;
  
  /* Border Radius */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;
  
  /* Shadows */
  --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.1);
  --shadow-md: 0 4px 8px rgba(0, 0, 0, 0.15);
  --shadow-lg: 0 8px 16px rgba(0, 0, 0, 0.2);
  --shadow-glow: 0 0 20px rgba(230, 251, 4, 0.3);
  
  /* Transitions */
  --transition-fast: 0.2s ease;
  --transition-base: 0.3s ease;
  --transition-slow: 0.5s ease;
  
  /* Layout */
  --max-width: 1200px;
  --header-height: 80px;
}

/* ============================================
   RESET & BASE STYLES
   ============================================ */

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

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

body {
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.6;
  color: var(--color-text-primary);
  background-color: var(--color-sky-white);
  overflow-x: hidden;
}

/* ============================================
   TYPOGRAPHY
   ============================================ */

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-header);
  font-weight: 600;
  line-height: 1.2;
  margin-bottom: var(--space-md);
  color: var(--color-text-primary);
}

h1 {
  font-size: clamp(1.4rem, 5vw, 3.5rem);
}

h2 {
  font-size: clamp(1.2rem, 4vw, 2.5rem);
}

h3 {
  font-size: clamp(1rem, 3vw, 2rem);
}

h4 {
  font-size: clamp(0.9rem, 2.5vw, 1.5rem);
}

p {
  margin-bottom: var(--space-md);
  color: var(--color-text-secondary);
}

a {
  text-decoration: none;
  color: var(--color-aviary-teal);
  transition: color var(--transition-fast);
}

a:hover {
  color: var(--color-warning-sulphur);
}

/* ============================================
   HEADER & NAVIGATION
   ============================================ */

.site-header {
  position: relative;
  width: 100%;
  background: var(--color-bg-overlay);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(45, 95, 93, 0.1);
  z-index: 1000;
}

.header-container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: var(--space-md) var(--space-lg);
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
}

.brand-text {
  font-family: var(--font-header);
  font-size: clamp(1rem, 2vw, 1.35rem);
  font-weight: 700;
  color: var(--color-aviary-teal);
}

.main-nav {
  display: flex;
  gap: 25px;
  align-items: center;
  list-style: none;
}

.main-nav a {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--color-text-primary);
  padding: var(--space-sm) var(--space-md);
  border-radius: var(--radius-md);
  transition: all var(--transition-base);
}

.main-nav a:hover {
  background: rgba(45, 95, 93, 0.1);
  color: var(--color-aviary-teal);
}

.burger-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--space-sm);
  z-index: 100001;
  order: 999;
}

.burger-icon {
  width: 28px;
  height: 28px;
  display: flex;
  flex-direction: column;
  justify-content: space-around;
}

.burger-icon span {
  width: 100%;
  height: 3px;
  background: var(--color-aviary-teal);
  border-radius: 2px;
  transition: all var(--transition-base);
}

.burger-toggle.active .burger-icon span:nth-child(1) {
  transform: rotate(45deg) translate(8px, 8px);
}

.burger-toggle.active .burger-icon span:nth-child(2) {
  opacity: 0;
}

.burger-toggle.active .burger-icon span:nth-child(3) {
  transform: rotate(-45deg) translate(7px, -7px);
}

@media (max-width: 1023px) {
  .burger-toggle {
    display: block;
  }
  
  .main-nav {
    position: fixed;
    top: 50px;
    left: 0;
    width: 100%;
    background: var(--color-bg-overlay);
    backdrop-filter: blur(15px);
    flex-direction: column;
    padding: var(--space-xl);
    gap: var(--space-md);
    transform: translateX(-100%);
    transition: transform var(--transition-base);
    box-shadow: var(--shadow-lg);
    max-height: calc(100vh - var(--header-height));
    overflow-y: auto;
  }
  
  .main-nav.active {
    transform: translateX(0);
  }
  
  .main-nav a {
    width: 100%;
    text-align: center;
    padding: var(--space-md);
  }
}

/* ============================================
   BANNER SECTIONS
   ============================================ */

.hero-banner {
  position: relative;
  width: 100vw;
  margin-left: calc(-50vw + 50%);
  min-height: 60vh;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.banner-image {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  z-index: 1;
  opacity: 0.4;
}

.banner-content {
  position: relative;
  z-index: 2;
  max-width: var(--max-width);
  width: 100%;
  padding: var(--space-2xl) var(--space-lg);
  text-align: center;
  background: rgba(240, 244, 248, 0.85);
  backdrop-filter: blur(8px);
  border-radius: var(--radius-lg);
  margin: var(--space-xl);
}

.banner-content h1 {
  color: var(--color-aviary-teal);
  margin-bottom: var(--space-lg);
}

.banner-content p {
  font-size: clamp(1rem, 2vw, 1.25rem);
  color: var(--color-text-secondary);
  max-width: 800px;
  margin: 0 auto;
}

/* ============================================
   MAIN CONTENT AREA
   ============================================ */

main {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: var(--space-2xl) var(--space-lg);
}

.content-section {
  margin-bottom: var(--space-3xl);
  padding: var(--space-2xl) 0;
  max-width: 1200px;
  margin-left: auto;
  margin-right: auto;
  width: 100%;
}

.section-header {
  text-align: center;
  margin-bottom: var(--space-2xl);
}

.section-header h2 {
  color: var(--color-aviary-teal);
  position: relative;
  display: inline-block;
  padding-bottom: var(--space-md);
}

.section-header h2::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 60px;
  height: 3px;
  background: var(--color-warning-sulphur);
  border-radius: 2px;
}

/* ============================================
   GRID LAYOUTS
   ============================================ */

.grid-container {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--space-xl);
  margin-top: var(--space-xl);
  max-width: 1200px;
  margin-left: auto;
  margin-right: auto;
  padding: 0 var(--space-lg);
}

.grid-item {
  background: var(--color-sky-white);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  box-shadow: var(--shadow-md);
  transition: transform var(--transition-base), box-shadow var(--transition-base);
  border: 1px solid rgba(45, 95, 93, 0.1);
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
}

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

.grid-item img {
  width: 100%;
  max-width: 300px;
  height: 200px;
  object-fit: cover;
  border-radius: var(--radius-md);
  margin-bottom: var(--space-md);
}

.grid-item h3 {
  color: var(--color-aviary-teal);
  margin-bottom: var(--space-sm);
}

.grid-item p {
  font-size: 0.95rem;
  margin-bottom: var(--space-md);
}

/* Two Column Grid */
.grid-two {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--space-xl);
  align-items: center;
  max-width: 1000px;
  margin: 0 auto;
  padding: 0 var(--space-lg);
}

.grid-two img {
  width: 100%;
  max-width: 450px;
  height: auto;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  margin: 0 auto;
  display: block;
}

/* ============================================
   PRODUCTS
   ============================================ */

.product-card {
  background: var(--color-sky-white);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  box-shadow: var(--shadow-md);
  transition: all var(--transition-base);
  border: 1px solid rgba(45, 95, 93, 0.1);
}

.product-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-glow);
  border-color: var(--color-warning-sulphur);
}

.product-image {
  width: 100%;
  max-width: 350px;
  height: 250px;
  object-fit: cover;
  border-radius: var(--radius-md);
  margin-bottom: var(--space-md);
  margin-left: auto;
  margin-right: auto;
  display: block;
}

.product-title {
  font-size: 1.5rem;
  color: var(--color-aviary-teal);
  margin-bottom: var(--space-sm);
}

.product-description {
  color: var(--color-text-secondary);
  margin-bottom: var(--space-md);
  font-size: 0.95rem;
}

.product-price {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-aviary-teal);
  font-family: var(--font-header);
}

/* ============================================
   FORMS
   ============================================ */

.form-container {
  max-width: 600px;
  margin: 0 auto;
  background: var(--color-sky-white);
  padding: var(--space-2xl);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
}

.form-group {
  margin-bottom: var(--space-lg);
}

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

.form-group input,
.form-group textarea {
  width: 100%;
  padding: var(--space-md);
  border: 2px solid rgba(45, 95, 93, 0.2);
  border-radius: var(--radius-md);
  font-family: var(--font-body);
  font-size: 1rem;
  transition: border-color var(--transition-base);
  background: white;
}

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

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

.checkbox-group {
  display: flex;
  align-items: flex-start;
  gap: var(--space-sm);
  margin-top: var(--space-md);
}

.checkbox-group input[type="checkbox"] {
  width: auto;
  margin-top: 4px;
}

.checkbox-group label {
  margin-bottom: 0;
  font-size: 0.9rem;
}

.btn {
  display: inline-block;
  padding: var(--space-md) var(--space-xl);
  background: var(--color-aviary-teal);
  color: white;
  border: none;
  border-radius: var(--radius-md);
  font-family: var(--font-body);
  font-size: 1rem;
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition-base);
  text-align: center;
  margin-top: 10px;
}

.btn:hover {
  background: var(--color-warning-sulphur);
  color: var(--color-carbon-mesh);
  transform: translateY(-2px);
  box-shadow: var(--shadow-glow);
}

.btn-block {
  width: 100%;
}

/* ============================================
   MAPS
   ============================================ */

.map-container {
  width: 100%;
  height: 400px;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  margin: var(--space-xl) 0;
}

.map-container iframe {
  width: 100%;
  height: 100%;
  border: none;
}

/* ============================================
   FOOTER
   ============================================ */

.site-footer {
  background: var(--color-carbon-mesh);
  color: var(--color-sky-white);
  padding: var(--space-2xl) var(--space-lg);
  margin-top: var(--space-3xl);
}

.footer-container {
  max-width: var(--max-width);
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--space-xl);
}

.footer-section h4 {
  color: var(--color-warning-sulphur);
  margin-bottom: var(--space-md);
  font-size: 1.1rem;
}

.footer-nav {
  list-style: none;
}

.footer-nav li {
  margin-bottom: var(--space-sm);
}

.footer-nav a {
  color: rgba(240, 244, 248, 0.8);
  transition: color var(--transition-fast);
}

.footer-nav a:hover {
  color: var(--color-warning-sulphur);
}

.footer-contact {
  color: rgba(240, 244, 248, 0.8);
  font-size: 0.95rem;
}

.footer-contact p {
  margin-bottom: var(--space-sm);
  color: rgba(240, 244, 248, 0.8);
}

.footer-bottom {
  text-align: center;
  padding-top: var(--space-xl);
  margin-top: var(--space-xl);
  border-top: 1px solid rgba(240, 244, 248, 0.2);
  color: rgba(240, 244, 248, 0.6);
  font-size: 0.9rem;
}

/* ============================================
   PRIVACY POPUP
   ============================================ */

.privacy-overlay {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(28, 28, 30, 0.8);
  backdrop-filter: blur(5px);
  z-index: 10000;
  align-items: center;
  justify-content: center;
  padding: var(--space-lg);
}

.privacy-overlay.active {
  display: flex;
}

.privacy-popup {
  background: var(--color-sky-white);
  border-radius: var(--radius-lg);
  padding: var(--space-2xl);
  max-width: 600px;
  max-height: 80vh;
  overflow-y: auto;
  box-shadow: var(--shadow-lg);
  position: relative;
}

.privacy-popup h2 {
  color: var(--color-aviary-teal);
  margin-bottom: var(--space-lg);
}

.privacy-popup p {
  margin-bottom: var(--space-md);
  font-size: 0.95rem;
}

.privacy-close {
  position: absolute;
  top: var(--space-md);
  right: var(--space-md);
  background: none;
  border: none;
  font-size: 1.5rem;
  cursor: pointer;
  color: var(--color-text-secondary);
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-sm);
  transition: background var(--transition-fast);
}

.privacy-close:hover {
  background: rgba(45, 95, 93, 0.1);
}

/* ============================================
   UTILITY CLASSES
   ============================================ */

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

.mt-sm { margin-top: var(--space-sm); }
.mt-md { margin-top: var(--space-md); }
.mt-lg { margin-top: var(--space-lg); }
.mt-xl { margin-top: var(--space-xl); }

.mb-sm { margin-bottom: var(--space-sm); }
.mb-md { margin-bottom: var(--space-md); }
.mb-lg { margin-bottom: var(--space-lg); }
.mb-xl { margin-bottom: var(--space-xl); }

/* ============================================
   RESPONSIVE DESIGN
   ============================================ */

@media (max-width: 768px) {
  :root {
    --space-xl: 1.5rem;
    --space-2xl: 2rem;
    --space-3xl: 2.5rem;
  }
  
  .header-container {
    padding: var(--space-md);
  }
  
  main {
    padding: var(--space-xl) var(--space-md);
  }
  
  .banner-content {
    padding: var(--space-lg) var(--space-md);
    margin: var(--space-md);
  }
  
  .grid-container {
    grid-template-columns: 1fr;
    gap: var(--space-lg);
  }
  
  .grid-two {
    grid-template-columns: 1fr;
  }
  
  .form-container {
    padding: var(--space-lg);
  }
  
  .footer-container {
    grid-template-columns: 1fr;
    gap: var(--space-lg);
  }
}

@media (max-width: 480px) {
  html {
    font-size: 14px;
  }
  
  .hero-banner {
    min-height: 50vh;
  }
  
  .content-section {
    padding: var(--space-lg) 0;
  }
}

@media (max-width: 320px) {
  html {
    font-size: 12px;
  }
  
  .header-container {
    padding: var(--space-sm);
  }
  
  main {
    padding: var(--space-md) var(--space-sm);
  }
}

/* ============================================
   ANIMATIONS & EFFECTS
   ============================================ */

@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.fade-in {
  animation: fadeIn 0.6s ease-out;
}

/* Flight path decorative element */
.flight-path {
  position: absolute;
  width: 100%;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--color-warning-sulphur), transparent);
  opacity: 0.3;
  pointer-events: none;
}