/* 
   Resident Evil Requiem - Global Stylesheet
   Design System: Premium Dark Mode / Glassmorphism / Bloody Accents
*/

:root {
  /* Color Variables */
  --bg-primary: #0a0a0a;
  --bg-secondary: #141414;
  --bg-tertiary: rgba(20, 20, 20, 0.7);
  
  --text-primary: #f2f2f2;
  --text-secondary: #a0a0a0;
  --text-accent: #ff3333;
  --text-pure-white: #ffffff;
  
  --accent-red: #cc0000;
  --accent-red-hover: #ff1a1a;
  --accent-blood: #8a0303;
  --accent-blue: #0055ff; /* Umbrella blue contrast */
  
  /* Typography */
  --font-family-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
  --font-family-heading: 'Oswald', var(--font-family-sans); /* Requires Google Font import */
  
  /* Spacing */
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 2rem;
  --spacing-lg: 4rem;
  --spacing-xl: 8rem;

  /* Layout */
  --max-content-width: 1200px;
  
  /* Effects */
  --shadow-glow: 0 0 20px rgba(204, 0, 0, 0.4);
  --glass-morphism: blur(12px);
  --border-radius-sm: 4px;
  --border-radius-md: 8px;
  --transition-fast: 0.2s ease-in-out;
  --transition-smooth: 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth; /* Smooth scrolling for anchor links */
}

body {
  font-family: var(--font-family-sans);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

::selection {
  background-color: var(--accent-red);
  color: var(--text-pure-white);
}

/* ==========================================================================
   Typography
   ========================================================================== */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-family-heading);
  text-transform: uppercase;
  font-weight: 700;
  letter-spacing: 1px;
  line-height: 1.2;
  margin-bottom: var(--spacing-sm);
}

h1 {
  font-size: 3.5rem;
  background: linear-gradient(180deg, var(--text-pure-white) 0%, var(--text-secondary) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

h2 {
  font-size: 2.5rem;
  color: var(--text-pure-white);
  border-bottom: 2px solid var(--accent-red);
  padding-bottom: var(--spacing-xs);
  display: inline-block;
}

p {
  margin-bottom: var(--spacing-sm);
  font-size: 1.125rem;
  color: var(--text-secondary);
}

a {
  color: var(--accent-red);
  text-decoration: none;
  transition: color var(--transition-fast);
}

a:hover {
  color: var(--text-pure-white);
}

strong {
  color: var(--text-pure-white);
  font-weight: 600;
}

/* ==========================================================================
   Layout Containers
   ========================================================================== */
.container {
  max-width: var(--max-content-width);
  margin: 0 auto;
  padding: 0 var(--spacing-sm);
}

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

/* ==========================================================================
   Components: Header & Navigation
   ========================================================================== */
.site-header {
  position: fixed;
  top: 0;
  width: 100%;
  z-index: 1000;
  background: var(--bg-tertiary);
  backdrop-filter: var(--glass-morphism);
  -webkit-backdrop-filter: var(--glass-morphism);
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
  transition: background-color var(--transition-fast);
}

.site-header .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 80px;
}

.logo a {
  font-family: var(--font-family-heading);
  font-size: 1.5rem;
  color: var(--text-pure-white);
  text-transform: uppercase;
  letter-spacing: 2px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.logo span {
  color: var(--accent-red);
}

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

.main-nav a {
  color: var(--text-primary);
  font-size: 0.9rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 1px;
  position: relative;
  padding: var(--spacing-xs) 0;
}

.main-nav a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0%;
  height: 2px;
  background-color: var(--accent-red);
  transition: width var(--transition-fast);
}

.main-nav a:hover::after,
.main-nav a.active::after {
  width: 100%;
}

/* ==========================================================================
   Components: Buttons
   ========================================================================== */
.btn {
  display: inline-block;
  background-color: transparent;
  color: var(--text-pure-white);
  padding: 12px 30px;
  font-family: var(--font-family-heading);
  font-size: 1rem;
  text-transform: uppercase;
  letter-spacing: 2px;
  border: 1px solid var(--accent-red);
  border-radius: var(--border-radius-sm);
  cursor: pointer;
  position: relative;
  overflow: hidden;
  z-index: 1;
  transition: all var(--transition-smooth);
}

.btn::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 0%;
  height: 100%;
  background-color: var(--accent-red);
  z-index: -1;
  transition: width var(--transition-smooth);
}

.btn:hover::before {
  width: 100%;
}

.btn:hover {
  box-shadow: var(--shadow-glow);
  color: var(--text-pure-white);
}

.btn-primary {
  background-color: var(--accent-red);
  border-color: var(--accent-red);
}

.btn-primary::before {
  background-color: var(--accent-red-hover);
}

/* ==========================================================================
   Components: Hero Section (For Homepage)
   ========================================================================== */
.hero {
  height: 100vh;
  min-height: 700px;
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  background-color: var(--bg-primary); /* Fallback */
  overflow: hidden;
}

/* Overlay for darkening the background image */
.hero::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0; bottom: 0;
  background: linear-gradient(180deg, rgba(10,10,10,0.8) 0%, rgba(10,10,10,0.4) 50%, rgba(10,10,10,1) 100%);
  z-index: 1;
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 800px;
  padding: 0 var(--spacing-sm);
  transform: translateY(20px);
  animation: fadeUp 1s ease-out forwards;
}

.hero-subtitle {
  font-family: var(--font-family-sans);
  color: var(--accent-red);
  font-weight: 600;
  letter-spacing: 4px;
  text-transform: uppercase;
  margin-bottom: var(--spacing-sm);
  display: block;
}

.hero .btn-group {
  margin-top: var(--spacing-md);
  display: flex;
  justify-content: center;
  gap: var(--spacing-sm);
}

/* ==========================================================================
   Components: Content Cards (For Hub Pages)
   ========================================================================== */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--spacing-md);
  margin-top: var(--spacing-lg);
}

.card {
  background-color: var(--bg-secondary);
  border: 1px solid rgba(255, 255, 255, 0.05);
  border-radius: var(--border-radius-md);
  overflow: hidden;
  transition: transform var(--transition-fast), box-shadow var(--transition-fast);
  display: flex;
  flex-direction: column;
}

.card:hover {
  transform: translateY(-5px);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
  border-color: rgba(204, 0, 0, 0.3);
}

.card-img {
  width: 100%;
  height: 200px;
  background-color: #222; /* Placeholder */
  object-fit: cover;
}

.card-content {
  padding: var(--spacing-sm) var(--spacing-md);
  flex-grow: 1;
  display: flex;
  flex-direction: column;
}

.card-title {
  font-size: 1.5rem;
  margin-bottom: var(--spacing-xs);
  border: none;
  font-family: var(--font-family-heading);
}

.card-title a {
  color: var(--text-pure-white);
}

.card-title a:hover {
  color: var(--accent-red);
}

.card-excerpt {
  font-size: 1rem;
  margin-bottom: var(--spacing-sm);
  flex-grow: 1;
}

.read-more {
  display: inline-flex;
  align-items: center;
  font-weight: 600;
  text-transform: uppercase;
  font-size: 0.85rem;
  letter-spacing: 1px;
}

.read-more::after {
  content: '→';
  margin-left: 5px;
  transition: transform var(--transition-fast);
}

.card:hover .read-more::after {
  transform: translateX(5px);
}

/* ==========================================================================
   Components: Article specific styling (For SEO Posts)
   ========================================================================== */
.article-header {
  padding: calc(var(--spacing-xl) + 80px) 0 var(--spacing-lg);
  text-align: center;
  background-color: var(--bg-secondary);
  border-bottom: 1px solid rgba(255,255,255,0.05);
}

.article-meta {
  color: var(--text-secondary);
  font-size: 0.9rem;
  margin-bottom: var(--spacing-sm);
  display: flex;
  justify-content: center;
  gap: var(--spacing-sm);
}

.article-meta span {
  display: flex;
  align-items: center;
}

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

.article-content h2, 
.article-content h3 {
  margin-top: var(--spacing-lg);
  margin-bottom: var(--spacing-sm);
}

.article-content ul, 
.article-content ol {
  margin-bottom: var(--spacing-sm);
  padding-left: var(--spacing-md);
  color: var(--text-secondary);
}

.article-content li {
  margin-bottom: var(--spacing-xs);
}

.article-content img {
  max-width: 100%;
  height: auto;
  border-radius: var(--border-radius-md);
  margin: var(--spacing-md) 0;
  box-shadow: 0 5px 15px rgba(0,0,0,0.5);
}

/* Table of Contents */
.toc {
  background-color: var(--bg-secondary);
  border: 1px solid rgba(204, 0, 0, 0.2);
  border-radius: var(--border-radius-md);
  padding: var(--spacing-md);
  margin-bottom: var(--spacing-lg);
}

.toc h3 {
  margin-top: 0;
  font-size: 1.2rem;
  border-bottom: none;
}

.toc ul {
  list-style-type: none;
  padding-left: 0;
  margin-bottom: 0;
}

.toc li {
  margin-bottom: 8px;
}

.toc a {
  color: var(--text-primary);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: all var(--transition-fast);
}

.toc a:hover {
  color: var(--accent-red);
  border-bottom-color: var(--accent-red);
}

/* ==========================================================================
   Footer
   ========================================================================== */
.site-footer {
  background-color: #050505;
  padding: var(--spacing-lg) 0 var(--spacing-md);
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  text-align: center;
}

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

.footer-links a {
  color: var(--text-secondary);
  margin: 0 10px;
  font-size: 0.9rem;
}

.footer-links a:hover {
  color: var(--text-pure-white);
}

.copyright {
  color: #666;
  font-size: 0.8rem;
}

/* ==========================================================================
   Animations
   ========================================================================== */
@keyframes fadeUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ==========================================================================
   Media Queries
   ========================================================================== */
@media (max-width: 768px) {
  h1 { font-size: 2.5rem; }
  h2 { font-size: 2rem; }
  
  .main-nav {
    display: none; /* Mobile menu implementation needed later */
  }
  
  .hero .btn-group {
    flex-direction: column;
  }
  
  .hero-content {
    padding: 0 20px;
  }
}