/* ============================================
   Sephiria Guides - Core Design System
   Fonts: Cinzel (titles), Inter (body), Noto Sans (KR/SC)
   License: All Google Fonts - free for commercial use
   ============================================ */

:root {
  /* Base Colors */
  --bg-primary: #0d0b14;
  --bg-secondary: #15121f;
  --bg-card: #1c1828;
  --bg-card-hover: #241f35;
  --bg-overlay: rgba(13, 11, 20, 0.85);

  /* Text Colors */
  --text-primary: #f0e8d8;
  --text-secondary: #a0988a;
  --text-muted: #6b6558;
  --text-gold: #c9a55c;

  /* Module Accent Colors */
  --accent-gold: #c9a55c;
  --accent-gold-glow: rgba(201, 165, 92, 0.3);
  --accent-beginner: #4a9d8e;
  --accent-weapons: #c75450;
  --accent-artifacts: #9b59b6;
  --accent-boss: #2d7a4f;
  --accent-builds: #e67e22;
  --accent-hardmode: #a93226;
  --accent-fate: #3a7cc8;

  /* Layout */
  --max-width: 1280px;
  --nav-height: 64px;
  --border-radius: 12px;
  --transition-base: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 0.6s cubic-bezier(0.4, 0, 0.2, 1);

  /* Fonts */
  --font-title: 'Cinzel', serif;
  --font-body: 'Inter', 'Noto Sans SC', 'Noto Sans KR', sans-serif;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-body);
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.7;
  overflow-x: hidden;
  min-height: 100vh;
}

a { color: var(--accent-gold); text-decoration: none; transition: color var(--transition-base); }
a:hover { color: #e0bc6e; }

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

/* ===== Page Transition Overlay ===== */
.page-transition {
  position: fixed; inset: 0; z-index: 9999;
  background: var(--bg-primary);
  pointer-events: none;
  opacity: 0;
  transition: opacity var(--transition-slow);
}
.page-transition.active {
  opacity: 1;
  pointer-events: all;
}
.page-transition .loader {
  position: absolute; top: 50%; left: 50%; transform: translate(-50%, -50%);
  text-align: center;
}
.page-transition .loader-text {
  font-family: var(--font-title);
  font-size: 1.5rem;
  color: var(--accent-gold);
  letter-spacing: 4px;
  animation: pulse 1.5s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 0.4; }
  50% { opacity: 1; }
}

/* ===== Header / Navigation ===== */
.nav {
  position: fixed; top: 0; left: 0; right: 0;
  height: var(--nav-height);
  background: rgba(13, 11, 20, 0.95);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(201, 165, 92, 0.15);
  z-index: 1000;
  display: flex; align-items: center;
  padding: 0 24px;
  transition: background var(--transition-base);
}
.nav-inner {
  width: 100%; max-width: var(--max-width);
  margin: 0 auto;
  display: flex; align-items: center; justify-content: space-between;
}
.nav-logo {
  font-family: var(--font-title);
  font-size: 1.4rem; font-weight: 700;
  color: var(--accent-gold);
  letter-spacing: 2px;
  cursor: pointer;
  text-decoration: none;
}
.nav-logo span { color: var(--text-primary); font-size: 0.85rem; font-weight: 400; letter-spacing: 1px; }

.nav-links {
  display: flex; align-items: center; gap: 28px;
  list-style: none;
}
.nav-links a {
  color: var(--text-secondary);
  font-size: 0.9rem; font-weight: 500;
  text-decoration: none;
  position: relative;
  transition: color var(--transition-base);
}
.nav-links a::after {
  content: ''; position: absolute; bottom: -4px; left: 0;
  width: 0; height: 2px;
  background: var(--accent-gold);
  transition: width var(--transition-base);
}
.nav-links a:hover { color: var(--text-primary); }
.nav-links a:hover::after { width: 100%; }

/* Language Switcher */
.lang-switcher {
  display: flex; gap: 4px;
  border: 1px solid rgba(201, 165, 92, 0.2);
  border-radius: 8px;
  padding: 2px;
  background: rgba(28, 24, 40, 0.8);
}
.lang-btn {
  background: transparent; border: none;
  color: var(--text-muted);
  padding: 4px 10px;
  font-size: 0.75rem; font-weight: 600;
  border-radius: 6px;
  cursor: pointer;
  transition: all var(--transition-base);
}
.lang-btn:hover { color: var(--text-secondary); }
.lang-btn.active {
  background: var(--accent-gold);
  color: var(--bg-primary);
}

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

/* ===== Hero Section ===== */
.hero {
  position: relative;
  min-height: 90vh;
  display: flex; align-items: center; justify-content: center;
  overflow: hidden;
}
.hero-bg {
  position: absolute; inset: 0;
  background-size: cover; background-position: center;
  z-index: 0;
}
.hero-bg::after {
  content: ''; position: absolute; inset: 0;
  background: linear-gradient(180deg, var(--bg-overlay) 0%, var(--bg-primary) 100%);
}
.hero-content {
  position: relative; z-index: 1;
  text-align: center;
  padding: 80px 24px 60px;
  max-width: 800px;
}
.hero-title {
  font-family: var(--font-title);
  font-size: clamp(2.5rem, 6vw, 4.5rem);
  font-weight: 700;
  color: var(--accent-gold);
  letter-spacing: 6px;
  margin-bottom: 1rem;
  text-shadow: 0 4px 30px var(--accent-gold-glow);
  animation: fadeInUp 1s ease-out;
}
.hero-tagline {
  font-size: 1.2rem;
  color: var(--text-secondary);
  margin-bottom: 2rem;
  animation: fadeInUp 1s ease-out 0.3s backwards;
}
.hero-stats {
  display: flex; justify-content: center; gap: 32px;
  flex-wrap: wrap;
  margin-bottom: 2.5rem;
  animation: fadeInUp 1s ease-out 0.5s backwards;
}
.hero-stat {
  text-align: center;
}
.hero-stat-num {
  font-family: var(--font-title);
  font-size: 2rem; font-weight: 700;
  color: var(--accent-gold);
}
.hero-stat-label {
  font-size: 0.8rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 1px;
}
.hero-cta {
  display: inline-block;
  padding: 14px 40px;
  background: linear-gradient(135deg, var(--accent-gold), #b8924a);
  color: var(--bg-primary);
  font-weight: 700;
  font-size: 1rem;
  border-radius: 8px;
  text-decoration: none;
  transition: all var(--transition-base);
  animation: fadeInUp 1s ease-out 0.7s backwards;
  border: none; cursor: pointer;
  letter-spacing: 1px;
}
.hero-cta:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px var(--accent-gold-glow);
  color: var(--bg-primary);
}

/* ===== Section Base ===== */
.section {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 64px 24px;
}
.section-header {
  text-align: center;
  margin-bottom: 48px;
}
.section-title {
  font-family: var(--font-title);
  font-size: 2rem;
  color: var(--text-primary);
  letter-spacing: 3px;
  margin-bottom: 0.5rem;
}
.section-title::after {
  content: ''; display: block;
  width: 60px; height: 3px;
  background: var(--accent-gold);
  margin: 1rem auto 0;
}
.section-subtitle {
  color: var(--text-muted);
  font-size: 0.95rem;
}

/* ===== Exclusive / Low-Competition Section ===== */
.exclusive-section {
  background: linear-gradient(180deg, var(--bg-secondary), var(--bg-primary));
  border-top: 1px solid rgba(201, 165, 92, 0.1);
  border-bottom: 1px solid rgba(201, 165, 92, 0.1);
}
.exclusive-badge {
  display: inline-block;
  background: var(--accent-gold);
  color: var(--bg-primary);
  font-size: 0.7rem; font-weight: 700;
  padding: 3px 10px;
  border-radius: 4px;
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 8px;
}

/* ===== Module Cards ===== */
.module-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: 24px;
}
.module-card {
  background: var(--bg-card);
  border-radius: var(--border-radius);
  overflow: hidden;
  position: relative;
  transition: all var(--transition-base);
  cursor: pointer;
  text-decoration: none;
  display: block;
  border: 1px solid transparent;
}
.module-card::before {
  content: ''; position: absolute; inset: 0;
  border-radius: var(--border-radius);
  padding: 2px;
  background: linear-gradient(135deg, var(--card-accent, var(--accent-gold)) 0%, transparent 60%);
  -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  opacity: 0;
  transition: opacity var(--transition-base);
}
.module-card:hover {
  transform: translateY(-4px);
  background: var(--bg-card-hover);
  border-color: var(--card-accent, var(--accent-gold));
}
.module-card:hover::before { opacity: 1; }

.module-card-img {
  width: 100%; height: 200px;
  object-fit: cover;
  transition: transform var(--transition-slow);
}
.module-card:hover .module-card-img { transform: scale(1.05); }

.module-card-img-wrapper {
  overflow: hidden;
  position: relative;
}
.module-card-img-wrapper::after {
  content: ''; position: absolute; inset: 0;
  background: linear-gradient(180deg, transparent 40%, var(--bg-card) 100%);
}

.module-card-body { padding: 20px 24px 28px; }
.module-card-tag {
  display: inline-block;
  font-size: 0.7rem; font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--card-accent, var(--accent-gold));
  margin-bottom: 8px;
}
.module-card-title {
  font-size: 1.15rem; font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 6px;
  line-height: 1.4;
}
.module-card-desc {
  font-size: 0.88rem;
  color: var(--text-secondary);
  line-height: 1.6;
}
.module-card-meta {
  display: flex; align-items: center; gap: 12px;
  margin-top: 12px;
  font-size: 0.75rem;
  color: var(--text-muted);
}
.module-card-meta .dot { width: 4px; height: 4px; border-radius: 50%; background: var(--text-muted); }

/* Exclusive card variant */
.module-card.exclusive {
  border-color: var(--accent-gold);
  box-shadow: 0 0 20px rgba(201, 165, 92, 0.08);
}
.module-card.exclusive .module-card-tag::before {
  content: '★ ';
}

/* Coming soon card variant */
.module-card.coming-soon {
  opacity: 0.6;
  cursor: default;
}
.module-card.coming-soon .module-card-title::after {
  content: ' — Soon';
  font-size: 0.75rem;
  color: var(--text-muted);
}

/* ===== Footer ===== */
.footer {
  background: var(--bg-secondary);
  border-top: 1px solid rgba(201, 165, 92, 0.1);
  padding: 40px 24px 24px;
  text-align: center;
}
.footer-inner { max-width: var(--max-width); margin: 0 auto; }
.footer-links {
  display: flex; justify-content: center; gap: 20px;
  margin-bottom: 20px;
  flex-wrap: wrap;
}
.footer-links a {
  color: var(--text-muted);
  font-size: 0.85rem;
  text-decoration: none;
  transition: color var(--transition-base);
}
.footer-links a:hover { color: var(--text-secondary); }
.footer-copyright {
  color: var(--text-muted);
  font-size: 0.8rem;
  line-height: 1.8;
}
.footer-disclaimer {
  color: var(--text-muted);
  font-size: 0.75rem;
  margin-top: 8px;
  opacity: 0.7;
}

/* ===== Scroll-to-top ===== */
.scroll-top {
  position: fixed; bottom: 24px; right: 24px;
  width: 44px; height: 44px;
  background: var(--accent-gold);
  color: var(--bg-primary);
  border: none; border-radius: 50%;
  font-size: 1.2rem; cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  opacity: 0; pointer-events: none;
  transition: all var(--transition-base);
  z-index: 900;
}
.scroll-top.visible { opacity: 1; pointer-events: all; }
.scroll-top:hover { transform: translateY(-2px); box-shadow: 0 4px 20px var(--accent-gold-glow); }

/* ===== Cookie Banner ===== */
.cookie-banner {
  position: fixed; bottom: 0; left: 0; right: 0;
  background: var(--bg-card);
  border-top: 1px solid rgba(201, 165, 92, 0.2);
  padding: 16px 24px;
  display: flex; align-items: center; justify-content: center; gap: 20px;
  z-index: 950;
  transform: translateY(100%);
  transition: transform var(--transition-slow);
}
.cookie-banner.show { transform: translateY(0); }
.cookie-banner-text { font-size: 0.85rem; color: var(--text-secondary); flex: 1; max-width: 800px; }
.cookie-banner-btn {
  background: var(--accent-gold); color: var(--bg-primary);
  border: none; padding: 8px 20px;
  border-radius: 6px; font-weight: 700;
  cursor: pointer; font-size: 0.85rem;
  white-space: nowrap;
}

/* ===== Animations ===== */
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(30px); }
  to { opacity: 1; transform: translateY(0); }
}
@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}
@keyframes slideInLeft {
  from { opacity: 0; transform: translateX(-30px); }
  to { opacity: 1; transform: translateX(0); }
}

/* Scroll-triggered animation targets */
[data-animate] {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}
[data-animate].in-view {
  opacity: 1;
  transform: translateY(0);
}

/* ===== Responsive ===== */
@media (max-width: 900px) {
  .nav-links { display: none; }
  .nav-toggle { display: block; }
  .nav-links.mobile-open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: var(--nav-height); left: 0; right: 0;
    background: var(--bg-secondary);
    padding: 20px 24px;
    gap: 16px;
    border-bottom: 1px solid rgba(201, 165, 92, 0.1);
  }
  .hero-stats { gap: 20px; }
  .hero-stat-num { font-size: 1.5rem; }
  .module-grid { grid-template-columns: 1fr; }
  .cookie-banner { flex-direction: column; gap: 12px; text-align: center; }
}

@media (max-width: 600px) {
  .section { padding: 40px 16px; }
  .hero-content { padding: 80px 16px 40px; }
  .hero-title { letter-spacing: 3px; }
  .section-title { font-size: 1.5rem; }
}

/* ===== Mobile Nav Bottom Bar (optional) ===== */
.mobile-nav-bar {
  display: none;
  position: fixed; bottom: 0; left: 0; right: 0;
  background: var(--bg-secondary);
  border-top: 1px solid rgba(201, 165, 92, 0.15);
  padding: 8px;
  z-index: 900;
  justify-content: space-around;
}
@media (max-width: 600px) {
  .mobile-nav-bar { display: flex; }
}
.mobile-nav-bar a {
  color: var(--text-muted);
  font-size: 0.7rem;
  text-decoration: none;
  text-align: center;
  padding: 4px 8px;
}
.mobile-nav-bar a.active { color: var(--accent-gold); }

/* ===== Ad Slots (shared) ===== */
.ad-slot {
  background: rgba(201,165,92,0.04);
  border: 1px dashed rgba(201,165,92,0.15);
  padding: 16px;
  text-align: center;
  border-radius: 8px;
  margin: 24px 0;
  color: var(--text-muted);
  font-size: 0.8rem;
  min-height: 90px;
  display: flex;
  align-items: center;
  justify-content: center;
}
.ad-slot--leaderboard {
  min-height: 100px;
  max-width: 728px;
  margin: 32px auto;
}
.ad-slot--sidebar {
  min-height: 600px;
  position: sticky;
  top: 80px;
}

/* ===== Utility ===== */
.hidden { display: none !important; }
.text-center { text-align: center; }