/* Design System & Global Styles */
:root {
  /* Colors */
  --primary-color: #0E4838;
  /* ARSPL Deep Teal Green */
  --primary-dark: #072A20;
  /* Darker shade for hover/active */
  --accent-color: #C5A059;
  /* ARSPL Gold */
  --accent-light: #D4B67D;
  /* Lighter Gold */
  --bg-white: #ffffff;
  --bg-light: #f8f6f2;
  /* Warm white/beige tint to match gold */
  --text-dark: #1a202c;
  --text-light: #4a5568;
  --border-color: #cbd5e0;

  /* Typography */
  --font-heading: 'Roboto', sans-serif;
  --font-body: 'Inter', sans-serif;

  /* Spacing */
  --spacing-container: 1200px;
  --spacing-section: 4rem;
}

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

body {
  font-family: var(--font-body);
  color: var(--text-dark);
  line-height: 1.6;
  background-color: var(--bg-white);
}

h1,
h2,
h3,
h4,
h5,
h6 {
  font-family: var(--font-heading);
  color: var(--primary-color);
  font-weight: 700;
  margin-bottom: 1rem;
}

a {
  text-decoration: none;
  color: inherit;
  transition: color 0.3s;
}

ul {
  list-style: none;
}

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

/* Layout Utilities */
.container {
  max-width: var(--spacing-container);
  margin: 0 auto;
  padding: 0 1.5rem;
}

.section {
  padding: var(--spacing-section) 0;
}

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

.flex {
  display: flex;
}

.grid {
  display: grid;
  gap: 2rem;
}

.grid-2 {
  grid-template-columns: repeat(2, 1fr);
}

.grid-3 {
  grid-template-columns: repeat(3, 1fr);
}

@media (max-width: 768px) {

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

/* Buttons */
.btn {
  display: inline-block;
  padding: 0.75rem 1.5rem;
  border-radius: 4px;
  font-weight: 600;
  text-align: center;
  cursor: pointer;
  border: none;
}

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

.btn-primary:hover {
  background-color: var(--primary-dark);
}

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

.btn-secondary:hover {
  background-color: var(--accent-color);
}

/* Header & Nav */
header {
  background-color: var(--bg-white);
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
  position: sticky;
  top: 0;
  z-index: 1000;
}

.navbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 0;
}

.logo {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--primary-color);
  display: flex;
  align-items: center;
}

.nav-links {
  display: flex;
  gap: 2rem;
}

.nav-links a {
  font-weight: 500;
  color: var(--text-dark);
}

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

/* Mobile Menu */
.mobile-menu-btn {
  display: none;
  font-size: 1.5rem;
  background: none;
  border: none;
  cursor: pointer;
}

@media (max-width: 768px) {
  .nav-links {
    display: none;
    /* Hide for now, can implement mobile menu toggle in JS */
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: white;
    flex-direction: column;
    padding: 1rem;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
  }

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

  .mobile-menu-btn {
    display: block;
  }
}

/* Footer */
footer {
  background-color: var(--primary-color);
  color: white;
  padding: 4rem 0 1rem;
}

.footer-content {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 2rem;
  margin-bottom: 2rem;
}

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

.footer-col ul li {
  margin-bottom: 0.75rem;
}

.footer-col a {
  color: #cbd5e0;
}

.footer-col a:hover {
  color: white;
}

.copyright {
  text-align: center;
  padding-top: 2rem;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  font-size: 0.9rem;
  color: #cbd5e0;
}

@media (max-width: 768px) {
  .footer-content {
    grid-template-columns: 1fr;
    text-align: center;
    /* Generally looks better stacked centered on mobile */
  }
}