/* Global Design Tokens & Variables */
:root {
  /* Colors */
  --color-primary: #d32f2f; /* Deep Red accent */
  --color-primary-dark: #b71c1c;
  --color-bg: #f8f9fa; /* Off-white background */
  --color-surface: #ffffff;
  --color-text: #212529; /* Charcoal for readability */
  --color-text-muted: #6c757d;
  --color-border: #e9ecef;
  
  /* Typography */
  --font-body: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-heading: "Inter", system-ui, -apple-system, "Segoe UI", Roboto, Arial, sans-serif;
  
  /* Layout */
  --max-width: 1200px;
  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;
  --border-radius: 8px;
  
  /* Effects */
  --shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
  --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.1), 0 2px 4px -1px rgba(0,0,0,0.06);
  --transition: all 0.2s ease-in-out;
}

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

body {
  font-family: var(--font-body);
  color: var(--color-text);
  background-color: var(--color-bg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: var(--spacing-sm);
  color: #111827;
}

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

a:hover {
  color: var(--color-primary-dark);
}

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

/* Layout Utilities */
.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

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

/* Header & Navigation */
.site-header {
  background-color: var(--color-surface);
  box-shadow: var(--shadow-sm);
  position: sticky;
  top: 0;
  z-index: 1000;
}

.header-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--spacing-md) 0;
}

.logo {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--color-primary);
  letter-spacing: -0.5px;
}

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

/* Mega Menu */
.main-nav {
  display: flex;
  gap: var(--spacing-lg);
}

.nav-list {
  list-style: none;
  display: flex;
  gap: var(--spacing-md);
  margin: 0;
}

.nav-item {
  position: relative;
}

.nav-link {
  color: var(--color-text);
  font-weight: 600;
  padding: var(--spacing-sm) 0;
  display: block;
}

.nav-link:hover {
  color: var(--color-primary);
}

/* Dropdown */
.dropdown-menu {
  display: none;
  position: absolute;
  top: 100%;
  left: 0;
  background: var(--color-surface);
  box-shadow: var(--shadow-md);
  border-radius: var(--border-radius);
  min-width: 200px;
  padding: var(--spacing-sm) 0;
  z-index: 10;
}

.nav-item:hover .dropdown-menu {
  display: block;
}

.dropdown-link {
  display: block;
  padding: var(--spacing-sm) var(--spacing-md);
  color: var(--color-text);
  font-size: 0.9rem;
}

.dropdown-link:hover {
  background-color: var(--color-bg);
  color: var(--color-primary);
}

/* Mobile Menu Toggle */
.menu-toggle {
  display: none;
  background: none;
  border: none;
  font-size: 1.5rem;
  cursor: pointer;
  color: var(--color-text);
}

/* Hero Section */
.hero {
  background: linear-gradient(135deg, #111827 0%, #1f2937 100%);
  color: white;
  padding: 4rem 0;
  text-align: center;
}

.hero h1 {
  color: white;
  font-size: 2.5rem;
  margin-bottom: var(--spacing-md);
}

.hero p {
  font-size: 1.1rem;
  color: #d1d5db;
  max-width: 600px;
  margin: 0 auto;
}

/* Cards & Grids */
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: var(--spacing-lg);
}

.card {
  background: var(--color-surface);
  border-radius: var(--border-radius);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
  transition: var(--transition);
  border: 1px solid var(--color-border);
}

.card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.card-img {
  width: 100%;
  aspect-ratio: 16/9;
  object-fit: cover;
  background-color: var(--color-border);
}

.card-content {
  padding: var(--spacing-md);
}

.card-title {
  font-size: 1.2rem;
  margin-bottom: var(--spacing-xs);
}

.card-meta {
  font-size: 0.85rem;
  color: var(--color-text-muted);
  margin-bottom: var(--spacing-md);
}

/* Article/Page Content */
.content-wrapper {
  background: var(--color-surface);
  border-radius: var(--border-radius);
  box-shadow: var(--shadow-sm);
  padding: var(--spacing-xl);
  margin: var(--spacing-xl) 0;
}

.article-body h2 {
  margin-top: var(--spacing-xl);
  margin-bottom: var(--spacing-md);
}

.article-body p {
  margin-bottom: var(--spacing-md);
  font-size: 1.05rem;
}

.article-body ul {
  margin-bottom: var(--spacing-md);
  padding-left: var(--spacing-xl);
}

/* Breadcrumbs */
.breadcrumbs {
  font-size: 0.85rem;
  color: var(--color-text-muted);
  margin-bottom: var(--spacing-md);
}

.breadcrumbs a {
  color: var(--color-text-muted);
}

.breadcrumbs a:hover {
  color: var(--color-primary);
}

.breadcrumbs span {
  margin: 0 var(--spacing-xs);
}

/* FAQ Accordion */
.faq-section {
  margin-top: var(--spacing-xl);
}

.faq-item {
  border-bottom: 1px solid var(--color-border);
}

.faq-question {
  width: 100%;
  text-align: left;
  background: none;
  border: none;
  padding: var(--spacing-md) 0;
  font-size: 1.1rem;
  font-weight: 600;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  color: var(--color-text);
}

.faq-question::after {
  content: '+';
  font-size: 1.5rem;
  color: var(--color-primary);
}

.faq-question[aria-expanded="true"]::after {
  content: '−';
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease-out;
}

.faq-answer p {
  padding-bottom: var(--spacing-md);
  color: var(--color-text-muted);
}

/* Footer */
.site-footer {
  background-color: #111827;
  color: #f9fafb;
  padding: var(--spacing-xl) 0 var(--spacing-md);
  margin-top: auto;
}

.footer-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--spacing-lg);
  margin-bottom: var(--spacing-xl);
}

.footer-col h3 {
  color: white;
  margin-bottom: var(--spacing-md);
  font-size: 1.1rem;
}

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

.footer-list li {
  margin-bottom: var(--spacing-sm);
}

.footer-list a {
  color: #9ca3af;
}

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

.footer-bottom {
  text-align: center;
  padding-top: var(--spacing-md);
  border-top: 1px solid #374151;
  color: #9ca3af;
  font-size: 0.9rem;
}

/* Utilities */
.text-center { text-align: center; }
.mb-2 { margin-bottom: var(--spacing-sm); }
.mb-4 { margin-bottom: var(--spacing-lg); }

/* Responsive */
@media (max-width: 768px) {
  .menu-toggle {
    display: block;
  }
  
  .nav-list {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    width: 100%;
    background: var(--color-surface);
    flex-direction: column;
    padding: var(--spacing-md);
    box-shadow: var(--shadow-md);
  }
  
  .nav-list.active {
    display: flex;
  }
  
  .dropdown-menu {
    position: static;
    box-shadow: none;
    border-left: 2px solid var(--color-border);
    margin-left: var(--spacing-md);
    padding-left: var(--spacing-sm);
    display: block; /* Show implicitly on mobile */
  }
  
  .hero h1 {
    font-size: 2rem;
  }
  
  .content-wrapper {
    padding: var(--spacing-md);
  }
}