/* Reset & Variables */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  --color-primary-dark-green: #1a3c2a;
  --color-accent-dark-gold: #b8860b;
  --color-accent-neon-green: #39ff14;
  --color-background-cream: #f5f0e1;
  --color-text-white: #ffffff;
  --color-text-dark: #111111;
  --color-border-gold: #d4af37;
  --color-error-red: #cc0000;
  --font-heading: Impact, 'Arial Black', sans-serif;
  --font-body: 'Noto Sans SC', 'Helvetica Neue', Arial, sans-serif;
  --font-mono: 'Courier New', monospace;
  --font-data: 'Oswald', sans-serif;
  --max-width: 1200px;
  --header-height: 80px;
  --scroll-progress-height: 4px;
  --transition-speed: 0.3s;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-height) + 20px);
}

body {
  font-family: var(--font-body);
  background-color: var(--color-primary-dark-green);
  color: var(--color-text-white);
  line-height: 1.6;
  min-height: 100vh;
  overflow-x: hidden;
}

/* Skip link */
.skip-link {
  position: absolute;
  top: -100%;
  left: 0;
  z-index: 9999;
  background: var(--color-accent-dark-gold);
  color: var(--color-text-dark);
  padding: 0.5rem 1rem;
  text-decoration: none;
  font-weight: bold;
  transition: top 0.2s;
}
.skip-link:focus {
  top: 0;
}

/* Container */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1rem;
}

/* Header */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  background: var(--color-primary-dark-green);
  border-bottom: 2px solid var(--color-border-gold);
  z-index: 1000;
  height: var(--header-height);
  display: flex;
  align-items: center;
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  gap: 1rem;
}
.brand {
  display: flex;
  flex-direction: column;
  flex-shrink: 0;
}
.brand-name {
  font-family: var(--font-heading);
  font-size: 1.6rem;
  line-height: 1.2;
  color: var(--color-accent-dark-gold);
  text-transform: uppercase;
  letter-spacing: 2px;
}
.brand-tagline {
  font-size: 0.75rem;
  color: var(--color-accent-neon-green);
  letter-spacing: 1px;
  text-transform: uppercase;
  white-space: nowrap;
}

/* Navigation */
.site-nav {
  display: flex;
  align-items: center;
}
.nav-list {
  list-style: none;
  display: flex;
  gap: 0.25rem;
}
.nav-link {
  display: block;
  padding: 0.5rem 0.75rem;
  font-family: var(--font-body);
  font-weight: 600;
  color: var(--color-text-white);
  text-decoration: none;
  text-transform: uppercase;
  font-size: 0.8rem;
  letter-spacing: 1px;
  border-bottom: 2px solid transparent;
  transition: color var(--transition-speed), border-color var(--transition-speed);
}
.nav-link:hover,
.nav-link:focus-visible {
  color: var(--color-accent-neon-green);
  border-bottom-color: var(--color-accent-neon-green);
}
.nav-link[aria-current="page"] {
  color: var(--color-accent-dark-gold);
  border-bottom-color: var(--color-accent-dark-gold);
}

/* Hamburger toggle */
.nav-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.5rem;
  width: 40px;
  height: 40px;
  position: relative;
}
.nav-toggle-icon,
.nav-toggle-icon::before,
.nav-toggle-icon::after {
  content: '';
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-text-white);
  position: absolute;
  left: 8px;
  transition: transform 0.3s, opacity 0.3s;
}
.nav-toggle-icon {
  top: 50%;
  transform: translateY(-50%);
}
.nav-toggle-icon::before {
  top: -8px;
}
.nav-toggle-icon::after {
  top: 8px;
}
.nav-toggle[aria-expanded="true"] .nav-toggle-icon {
  background: transparent;
}
.nav-toggle[aria-expanded="true"] .nav-toggle-icon::before {
  top: 0;
  transform: rotate(45deg);
}
.nav-toggle[aria-expanded="true"] .nav-toggle-icon::after {
  top: 0;
  transform: rotate(-45deg);
}

/* Scroll progress */
.scroll-progress {
  position: fixed;
  top: var(--header-height);
  left: 0;
  width: 0%;
  height: var(--scroll-progress-height);
  background: linear-gradient(90deg, var(--color-accent-dark-gold), var(--color-accent-neon-green));
  z-index: 999;
  transition: width 0.1s linear;
  pointer-events: none;
}

/* Main content offset */
#main-content {
  margin-top: calc(var(--header-height) + var(--scroll-progress-height) + 1rem);
}

/* Footer */
.site-footer {
  background: var(--color-primary-dark-green);
  border-top: 2px solid var(--color-border-gold);
  padding: 2rem 0;
  margin-top: 3rem;
}
.footer-inner {
  display: grid;
  grid-template-columns: 1fr 2fr 1fr;
  gap: 2rem;
}
.footer-brand .brand-name {
  font-size: 1.2rem;
}
.footer-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}
.footer-links a {
  color: var(--color-text-white);
  text-decoration: none;
  font-size: 0.85rem;
  opacity: 0.8;
  transition: opacity var(--transition-speed), color var(--transition-speed);
}
.footer-links a:hover,
.footer-links a:focus-visible {
  opacity: 1;
  color: var(--color-accent-neon-green);
}
.footer-contact {
  font-size: 0.85rem;
  line-height: 1.8;
  opacity: 0.85;
}
.footer-contact a {
  color: var(--color-accent-dark-gold);
  text-decoration: underline;
}
.footer-legal {
  grid-column: 1 / -1;
  border-top: 1px solid var(--color-border-gold);
  padding-top: 1.5rem;
  margin-top: 1rem;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  font-size: 0.75rem;
  opacity: 0.7;
  gap: 0.5rem;
}
.footer-legal p {
  margin: 0;
}

/* Common components */
.btn {
  display: inline-block;
  padding: 0.6rem 1.8rem;
  font-family: var(--font-body);
  font-weight: bold;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--color-accent-dark-gold);
  background: transparent;
  border: 2px solid var(--color-border-gold);
  cursor: pointer;
  transition: all var(--transition-speed);
  text-decoration: none;
}
.btn:hover,
.btn:focus-visible {
  background: var(--color-accent-neon-green);
  border-color: var(--color-accent-neon-green);
  color: var(--color-text-dark);
}
.section-title {
  font-family: var(--font-heading);
  font-size: 2.5rem;
  color: var(--color-accent-dark-gold);
  margin-bottom: 1rem;
  text-transform: uppercase;
  letter-spacing: 3px;
}
.data-number {
  font-family: var(--font-data);
  font-size: 2rem;
  color: var(--color-accent-neon-green);
  line-height: 1;
}

/* Tab system */
.tab-group {
  margin: 2rem 0;
}
.tab-list {
  display: flex;
  list-style: none;
  border-bottom: 2px solid var(--color-border-gold);
  gap: 0;
}
.tab {
  padding: 0.75rem 1.5rem;
  font-family: var(--font-body);
  font-weight: 600;
  background: transparent;
  border: none;
  border-bottom: 3px solid transparent;
  cursor: pointer;
  color: var(--color-text-white);
  text-transform: uppercase;
  font-size: 0.9rem;
  transition: border-color var(--transition-speed), color var(--transition-speed);
}
.tab:hover,
.tab:focus-visible {
  color: var(--color-accent-neon-green);
}
.tab[aria-selected="true"] {
  border-bottom-color: var(--color-accent-dark-gold);
  color: var(--color-accent-dark-gold);
}
.tab-panels {
  padding: 1.5rem 0;
}
.tab-panel {
  display: none;
}
.tab-panel.is-active {
  display: block;
}

/* Media queries */
@media (max-width: 768px) {
  .header-inner {
    flex-wrap: wrap;
  }
  .nav-toggle {
    display: block;
  }
  .site-nav {
    position: absolute;
    top: var(--header-height);
    left: 0;
    width: 100%;
    background: var(--color-primary-dark-green);
    border-bottom: 2px solid var(--color-border-gold);
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s ease;
  }
  .site-nav[data-open] {
    max-height: 400px;
  }
  .nav-list {
    flex-direction: column;
    padding: 1rem;
    gap: 0.25rem;
  }
  .nav-link {
    padding: 0.75rem;
    border-bottom: 1px solid rgba(255,255,255,0.1);
  }
  :root {
    --header-height: 70px;
  }
  .footer-inner {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }
  .section-title {
    font-size: 1.8rem;
  }
}

@media (max-width: 480px) {
  .brand-name {
    font-size: 1.2rem;
  }
  .brand-tagline {
    font-size: 0.65rem;
  }
  .container {
    padding: 0 0.75rem;
  }
}

/* Accessibility */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
  .scroll-progress {
    transition: none;
  }
}

/* Utility for images (placeholder base) */
.img-container {
  position: relative;
  overflow: hidden;
  background: var(--color-background-cream);
  border: 2px solid var(--color-border-gold);
  border-radius: 0 24px 0 24px; /* cut corner effect */
}
.img-container img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}