:root {
  --color-bg: #ffffff;
  --color-text: #111111;
  --color-accent: #00205b; /* Aerospace Blue */
  --color-accent-hover: #001336;
  --color-border: #111111;
  --color-gray-light: #f4f4f4;
  --color-error: #e31837;

  --font-sans: 'Helvetica Neue', Helvetica, Arial, sans-serif;
  
  --spacing-4: 4px;
  --spacing-8: 8px;
  --spacing-12: 12px;
  --spacing-16: 16px;
  --spacing-24: 24px;
  --spacing-40: 40px;
  --spacing-64: 64px;

  --header-height-desk: 64px;
  --header-height-mob: 52px;
}

*, *::before, *::after {
  box-sizing: border-box;
}

html {
  font-size: 16px;
  line-height: 1.5;
  font-family: var(--font-sans);
  color: var(--color-text);
  background-color: var(--color-bg);
  scroll-behavior: smooth;
}

body {
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

/* Typography Constraints */
h1, h2, h3, h4, h5, h6, .brand-name, nav, .wrap-text {
  overflow-wrap: anywhere;
}

h1 {
  font-size: clamp(2.5rem, 6vw, 5rem);
  line-height: 1.1;
  letter-spacing: -0.03em;
  margin: 0 0 var(--spacing-24) 0;
  font-weight: 700;
}

h2 {
  font-size: clamp(2rem, 4vw, 3.5rem);
  line-height: 1.1;
  letter-spacing: -0.02em;
  margin: 0 0 var(--spacing-24) 0;
}

h3 {
  font-size: clamp(1.25rem, 2vw, 1.75rem);
  margin: 0 0 var(--spacing-16) 0;
}

p {
  margin: 0 0 var(--spacing-24) 0;
}

a {
  color: var(--color-text);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 4px;
}

a:hover {
  text-decoration-thickness: 2px;
}

/* Accessibility */
:focus-visible {
  outline: 3px solid var(--color-accent);
  outline-offset: 2px;
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    transition: none !important;
    animation: none !important;
  }
}

/* Layout & Grid (Swiss Minimalist) */
.container {
  width: 100%;
  max-width: 1440px;
  margin: 0 auto;
  padding: 0 var(--spacing-24);
}

.grid {
  display: grid;
  gap: var(--spacing-24);
}

.grid > *, .flex > * {
  min-width: 0;
}

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

@media (min-width: 768px) {
  .grid-cols-2 { grid-template-columns: repeat(2, 1fr); }
  .grid-cols-3 { grid-template-columns: repeat(3, 1fr); }
}

/* Asymmetric hero grid */
.hero-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-40);
  padding: var(--spacing-64) 0;
  border-bottom: 2px solid var(--color-border);
}

@media (min-width: 768px) {
  .hero-grid {
    grid-template-columns: 3fr 2fr;
    align-items: end;
  }
}

/* Header */
.site-header {
  height: var(--header-height-mob);
  border-bottom: 2px solid var(--color-border);
  display: flex;
  align-items: center;
  background-color: var(--color-bg);
}

@media (min-width: 768px) {
  .site-header {
    height: var(--header-height-desk);
  }
}

.header-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  width: 100%;
}

.brand {
  display: flex;
  align-items: center;
  gap: var(--spacing-8);
  font-weight: 700;
  text-decoration: none;
  font-size: 1.25rem;
  letter-spacing: -0.02em;
}

.brand:hover {
  text-decoration: none;
}

.brand svg {
  width: 24px;
  height: 24px;
}

.main-nav {
  display: none;
}

@media (min-width: 1024px) {
  .main-nav {
    display: flex;
    gap: var(--spacing-24);
  }
  .main-nav a {
    text-decoration: none;
    font-weight: 500;
  }
  .main-nav a:hover {
    text-decoration: underline;
  }
}

.header-cta {
  display: none;
}

@media (min-width: 768px) {
  .header-cta {
    display: inline-block;
  }
}

/* Mobile Menu Toggle */
.menu-toggle {
  display: block;
  background: none;
  border: none;
  padding: var(--spacing-8);
  cursor: pointer;
}

@media (min-width: 1024px) {
  .menu-toggle {
    display: none;
  }
}

/* Mobile Nav Overlay */
.mobile-nav-overlay {
  display: none;
  position: fixed;
  top: var(--header-height-mob);
  left: 0;
  width: 100%;
  height: calc(100vh - var(--header-height-mob));
  background-color: var(--color-bg);
  z-index: 100;
  padding: var(--spacing-24);
  border-top: 2px solid var(--color-border);
}

.mobile-nav-overlay.is-active {
  display: block;
}

.mobile-nav-overlay nav {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-24);
}

.mobile-nav-overlay a {
  font-size: 1.5rem;
  font-weight: 700;
  text-decoration: none;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-12) var(--spacing-24);
  background-color: var(--color-accent);
  color: var(--color-bg);
  font-weight: 700;
  text-decoration: none;
  border: 2px solid var(--color-accent);
  cursor: pointer;
  transition: background-color 0.2s ease, color 0.2s ease;
}

.btn:hover {
  background-color: var(--color-accent-hover);
  color: var(--color-bg);
  text-decoration: none;
}

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

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

/* Cards (Data Grid Style) */
.card-section {
  padding: var(--spacing-64) 0;
}

.card {
  border: 2px solid var(--color-border);
  display: flex;
  flex-direction: column;
  height: 100%;
}

.card-data-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  border-bottom: 2px solid var(--color-border);
  background-color: var(--color-gray-light);
}

.stat-cell {
  padding: var(--spacing-8) var(--spacing-12);
  border-right: 2px solid var(--color-border);
}

.stat-cell:last-child {
  border-right: none;
}

.stat-label {
  display: block;
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: var(--spacing-12);
}

.stat-value {
  display: block;
  font-size: 0.9rem;
  font-weight: 500;
}

.card-body {
  padding: var(--spacing-24);
  display: flex;
  flex-direction: column;
  flex-grow: 1;
}

.card-body img {
  width: 100%;
  height: auto;
  aspect-ratio: 4/3;
  object-fit: cover;
  margin-bottom: var(--spacing-24);
  border: 1px solid var(--color-border);
}

.card-body .btn {
  margin-top: auto;
  align-self: flex-start;
}

/* Article / Content Pages */
.article-header {
  padding: var(--spacing-64) 0 var(--spacing-40) 0;
  border-bottom: 2px solid var(--color-border);
  margin-bottom: var(--spacing-64);
}

.article-meta-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--spacing-24);
  margin-top: var(--spacing-40);
  border-top: 2px solid var(--color-border);
  padding-top: var(--spacing-24);
}

@media (min-width: 768px) {
  .article-meta-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

.article-content {
  max-width: 800px;
  margin: 0 auto;
  padding-bottom: var(--spacing-64);
}

.article-content h2 {
  margin-top: var(--spacing-64);
}

.article-content img {
  width: 100%;
  height: auto;
  border: 2px solid var(--color-border);
  margin: var(--spacing-24) 0;
}

.data-table-wrapper {
  width: 100%;
  overflow-x: auto;
  margin: var(--spacing-24) 0;
  border: 2px solid var(--color-border);
}

table {
  width: 100%;
  border-collapse: collapse;
  min-width: 500px;
}

th, td {
  padding: var(--spacing-12) var(--spacing-16);
  border-bottom: 1px solid var(--color-border);
  text-align: left;
}

th {
  background-color: var(--color-gray-light);
  font-weight: 700;
  border-right: 1px solid var(--color-border);
}

td {
  border-right: 1px solid var(--color-border);
}

/* Form Styles */
.form-group {
  margin-bottom: var(--spacing-24);
}

.form-label {
  display: block;
  font-weight: 700;
  margin-bottom: var(--spacing-8);
}

.form-control {
  width: 100%;
  padding: var(--spacing-12);
  border: 2px solid var(--color-border);
  font-family: var(--font-sans);
  font-size: 1rem;
  background-color: var(--color-bg);
}

.form-control:focus {
  outline: none;
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px rgba(0, 32, 91, 0.2);
}

.form-control.is-invalid {
  border-color: var(--color-error);
}

.error-message {
  display: none;
  color: var(--color-error);
  font-size: 0.875rem;
  margin-top: var(--spacing-4);
}

.form-control.is-invalid + .error-message {
  display: block;
}

.form-submit-msg {
  display: none;
  padding: var(--spacing-16);
  background-color: var(--color-gray-light);
  border: 2px solid var(--color-border);
  font-weight: 700;
  margin-top: var(--spacing-24);
}

.form-submit-msg.is-visible {
  display: block;
}

.map-container {
  border: 2px solid var(--color-border);
  background-color: var(--color-gray-light);
  display: flex;
  align-items: center;
  justify-content: center;
  aspect-ratio: 4/3;
  width: 100%;
}

.map-container svg {
  width: 64px;
  height: 64px;
  opacity: 0.5;
}

/* Footer */
.site-footer {
  margin-top: auto;
  border-top: 2px solid var(--color-border);
  padding: var(--spacing-64) 0 var(--spacing-24) 0;
  background-color: var(--color-gray-light);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-40);
  margin-bottom: var(--spacing-64);
}

@media (min-width: 768px) {
  .footer-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

.footer-col h4 {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: var(--spacing-16);
  text-transform: uppercase;
}

.footer-col ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

.footer-col li {
  margin-bottom: var(--spacing-8);
}

.footer-col a {
  text-decoration: none;
  color: var(--color-text);
}

.footer-col a:hover {
  text-decoration: underline;
}

.footer-bottom {
  border-top: 1px solid var(--color-border);
  padding-top: var(--spacing-24);
  font-size: 0.875rem;
  display: flex;
  flex-direction: column;
  gap: var(--spacing-16);
}

@media (min-width: 768px) {
  .footer-bottom {
    flex-direction: row;
    justify-content: space-between;
  }
}

/* Cookie Banner */
.cookie-banner {
  position: fixed;
  bottom: 0;
  left: 0;
  width: 100%;
  background-color: var(--color-text);
  color: var(--color-bg);
  padding: var(--spacing-24);
  transform: translateY(100%);
  transition: transform 0.3s ease;
  z-index: 1000;
}

.cookie-banner.is-visible {
  transform: translateY(0);
}

.cookie-banner-inner {
  max-width: 1440px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: var(--spacing-16);
}

@media (min-width: 768px) {
  .cookie-banner-inner {
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
  }
}

.cookie-text p {
  margin: 0;
  font-size: 0.9rem;
}

.cookie-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-12);
}

.cookie-btn {
  background-color: var(--color-bg);
  color: var(--color-text);
  border: 1px solid var(--color-bg);
  padding: var(--spacing-8) var(--spacing-16);
  font-weight: 700;
  cursor: pointer;
}

.cookie-btn:hover {
  background-color: var(--color-gray-light);
}

.cookie-btn-outline {
  background-color: transparent;
  color: var(--color-bg);
  border: 1px solid var(--color-bg);
}

.cookie-btn-outline:hover {
  background-color: var(--color-bg);
  color: var(--color-text);
}

/* Responsive tweaks for very small screens */
@media (max-width: 400px) {
  .card-data-grid {
    grid-template-columns: 1fr;
  }
  .stat-cell {
    border-right: none;
    border-bottom: 1px solid var(--color-border);
  }
  .stat-cell:last-child {
    border-bottom: none;
  }
}