/* Blue Prince Guide - Dark Mansion Theme */

:root {
  --bg-primary: #0f0e13;
  --bg-secondary: #1a1820;
  --bg-card: #22202b;
  --bg-elevated: #2a2735;
  --border: #3a3645;
  --border-accent: #5a4a8a;
  --text-primary: #e8e4f0;
  --text-secondary: #a8a3b8;
  --text-muted: #6e6a7e;
  --accent: #8b6fd6;
  --accent-bright: #b89dff;
  --accent-gold: #d4b572;
  --danger: #d67878;
  --success: #78c08a;
  --shadow: 0 4px 20px rgba(0, 0, 0, 0.5);
  --font-serif: "Cormorant Garamond", "Playfair Display", Georgia, serif;
  --font-body: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
}

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

html {
  scroll-behavior: smooth;
}

body {
  background: var(--bg-primary);
  background-image:
    radial-gradient(at 20% 10%, rgba(139, 111, 214, 0.08) 0, transparent 40%),
    radial-gradient(at 80% 70%, rgba(212, 181, 114, 0.05) 0, transparent 45%);
  color: var(--text-primary);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.7;
  min-height: 100vh;
}

/* Typography */
h1, h2, h3, h4 {
  font-family: var(--font-serif);
  font-weight: 600;
  line-height: 1.2;
  color: var(--text-primary);
  letter-spacing: 0.01em;
}

h1 { font-size: 2.75rem; margin-bottom: 1rem; }
h2 { font-size: 2rem; margin: 2.5rem 0 1rem; color: var(--accent-bright); }
h3 { font-size: 1.4rem; margin: 1.75rem 0 0.75rem; color: var(--accent-gold); }
h4 { font-size: 1.1rem; margin: 1.25rem 0 0.5rem; }

p { margin-bottom: 1rem; color: var(--text-secondary); }

a {
  color: var(--accent-bright);
  text-decoration: none;
  transition: color 0.2s;
}
a:hover { color: var(--accent-gold); }

strong { color: var(--text-primary); }
em { color: var(--accent-gold); font-style: italic; }

code {
  background: var(--bg-elevated);
  padding: 2px 7px;
  border-radius: 3px;
  font-size: 0.92em;
  color: var(--accent-gold);
  font-family: "SF Mono", Consolas, monospace;
}

/* Layout */
.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* Header */
.site-header {
  background: rgba(15, 14, 19, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 100;
}

.nav-wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 1.5rem;
  max-width: 1100px;
  margin: 0 auto;
}

.logo {
  font-family: var(--font-serif);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--accent-bright);
  letter-spacing: 0.03em;
}
.logo span { color: var(--accent-gold); }

.nav-links {
  display: flex;
  list-style: none;
  gap: 0.5rem;
}

.nav-links a {
  color: var(--text-secondary);
  padding: 0.5rem 1rem;
  border-radius: 4px;
  font-size: 0.95rem;
  transition: all 0.2s;
}
.nav-links a:hover,
.nav-links a.active {
  color: var(--text-primary);
  background: var(--bg-elevated);
}

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

/* Language switcher */
.lang-switch {
  display: flex;
  gap: 0.25rem;
  align-items: center;
  margin-left: 1rem;
  font-size: 0.85rem;
  color: var(--text-muted);
}
.lang-switch a {
  color: var(--text-muted);
  padding: 0.3rem 0.6rem;
  border-radius: 3px;
  transition: all 0.2s;
  text-decoration: none;
}
.lang-switch a:hover { color: var(--text-primary); background: var(--bg-elevated); }
.lang-switch a.active {
  color: var(--accent-gold);
  background: var(--bg-elevated);
}
.lang-sep { color: var(--border); }

.nav-right {
  display: flex;
  align-items: center;
}

/* Hero */
.hero {
  padding: 5rem 0 4rem;
  text-align: center;
  border-bottom: 1px solid var(--border);
}

.hero h1 {
  font-size: 3.5rem;
  background: linear-gradient(135deg, var(--accent-bright) 0%, var(--accent-gold) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 1rem;
}

.hero .subtitle {
  font-size: 1.2rem;
  color: var(--text-secondary);
  max-width: 650px;
  margin: 0 auto 2rem;
}

.hero-cta {
  display: inline-block;
  background: var(--accent);
  color: white;
  padding: 0.85rem 2rem;
  border-radius: 4px;
  font-weight: 600;
  transition: all 0.2s;
  border: 1px solid var(--accent-bright);
}
.hero-cta:hover {
  background: var(--accent-bright);
  color: white;
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(184, 157, 255, 0.3);
}

/* Ad slots */
.ad-slot {
  background: var(--bg-secondary);
  border: 1px dashed var(--border);
  padding: 1rem;
  margin: 2rem 0;
  text-align: center;
  color: var(--text-muted);
  font-size: 0.85rem;
  border-radius: 6px;
  min-height: 90px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.ad-slot.ad-banner { min-height: 120px; }
.ad-slot.ad-sidebar { min-height: 250px; }
.ad-slot:empty { display: none; }

/* Section */
.section {
  padding: 3rem 0;
}

.section-title {
  text-align: center;
  margin-bottom: 2.5rem;
}

.section-title h2 {
  display: inline-block;
  position: relative;
  padding-bottom: 0.75rem;
}
.section-title h2::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 60px;
  height: 2px;
  background: var(--accent-gold);
}

/* Card grid */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.5rem;
}

.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 1.75rem;
  transition: all 0.3s;
  position: relative;
  overflow: hidden;
}

.card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--accent), var(--accent-gold));
  opacity: 0;
  transition: opacity 0.3s;
}

.card:hover {
  border-color: var(--border-accent);
  transform: translateY(-4px);
  box-shadow: var(--shadow);
}
.card:hover::before { opacity: 1; }

.card-tag {
  display: inline-block;
  background: var(--bg-elevated);
  color: var(--accent-gold);
  font-size: 0.75rem;
  padding: 0.2rem 0.7rem;
  border-radius: 3px;
  margin-bottom: 0.75rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.card h3 {
  margin-top: 0;
  color: var(--text-primary);
}

.card p {
  font-size: 0.95rem;
}

.card-link {
  display: inline-block;
  margin-top: 0.5rem;
  color: var(--accent-bright);
  font-weight: 500;
}
.card-link::after { content: " →"; transition: margin 0.2s; }
.card:hover .card-link::after { margin-left: 4px; }

/* Article layout */
.article-layout {
  display: grid;
  grid-template-columns: 1fr 280px;
  gap: 3rem;
  padding: 3rem 0;
}

.article-main {
  min-width: 0;
}

.article-main h1 {
  border-bottom: 1px solid var(--border);
  padding-bottom: 1rem;
  margin-bottom: 0.5rem;
}

.article-meta {
  color: var(--text-muted);
  font-size: 0.85rem;
  margin-bottom: 2rem;
}

.article-main ul, .article-main ol {
  margin: 1rem 0 1.5rem 1.5rem;
  color: var(--text-secondary);
}

.article-main li { margin-bottom: 0.5rem; }

.article-main blockquote {
  border-left: 3px solid var(--accent-gold);
  background: var(--bg-secondary);
  padding: 1rem 1.5rem;
  margin: 1.5rem 0;
  border-radius: 0 4px 4px 0;
  color: var(--text-secondary);
  font-style: italic;
}

.article-sidebar {
  position: sticky;
  top: 80px;
  align-self: start;
}

.toc {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 1.25rem;
  margin-bottom: 1.5rem;
}

.toc-title {
  font-family: var(--font-serif);
  font-size: 1rem;
  color: var(--accent-gold);
  margin-bottom: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.toc ul {
  list-style: none;
  margin: 0;
}

.toc li { margin-bottom: 0.4rem; }

.toc a {
  color: var(--text-secondary);
  font-size: 0.9rem;
}
.toc a:hover { color: var(--accent-bright); }

/* Tip box */
.tip-box, .warning-box, .info-box {
  padding: 1rem 1.25rem;
  border-radius: 6px;
  margin: 1.5rem 0;
  border-left: 3px solid;
}

.tip-box {
  background: rgba(120, 192, 138, 0.08);
  border-color: var(--success);
}

.warning-box {
  background: rgba(214, 120, 120, 0.08);
  border-color: var(--danger);
}

.info-box {
  background: rgba(139, 111, 214, 0.08);
  border-color: var(--accent);
}

.tip-box strong, .warning-box strong, .info-box strong {
  display: block;
  margin-bottom: 0.25rem;
  font-family: var(--font-serif);
  font-size: 1.05rem;
}

.tip-box strong { color: var(--success); }
.warning-box strong { color: var(--danger); }
.info-box strong { color: var(--accent-bright); }

/* Tables */
.guide-table {
  width: 100%;
  border-collapse: collapse;
  margin: 1.5rem 0;
  background: var(--bg-card);
  border-radius: 6px;
  overflow: hidden;
}

.guide-table th {
  background: var(--bg-elevated);
  color: var(--accent-gold);
  padding: 0.85rem 1rem;
  text-align: left;
  font-family: var(--font-serif);
  font-weight: 600;
}

.guide-table td {
  padding: 0.75rem 1rem;
  border-top: 1px solid var(--border);
  color: var(--text-secondary);
  font-size: 0.95rem;
}

.guide-table tr:hover { background: var(--bg-elevated); }

/* Step list */
.step-list {
  list-style: none;
  counter-reset: step;
  margin-left: 0 !important;
}

.step-list li {
  counter-increment: step;
  position: relative;
  padding: 1rem 1rem 1rem 3.5rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 6px;
  margin-bottom: 0.75rem;
}

.step-list li::before {
  content: counter(step);
  position: absolute;
  left: 1rem;
  top: 1rem;
  background: var(--accent);
  color: white;
  width: 1.75rem;
  height: 1.75rem;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: 0.95rem;
}

/* Tips list (homepage) */
.tips-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1rem;
}

.tip-item {
  background: var(--bg-secondary);
  padding: 1.25rem;
  border-radius: 6px;
  border-left: 3px solid var(--accent-gold);
}

.tip-item h4 {
  color: var(--accent-bright);
  margin-top: 0;
}

.tip-item p {
  font-size: 0.9rem;
  margin-bottom: 0;
}

/* Update log */
.update-log {
  max-width: 700px;
  margin: 0 auto;
}

.update-entry {
  display: flex;
  gap: 1.5rem;
  padding: 1rem 0;
  border-bottom: 1px solid var(--border);
}
.update-entry:last-child { border-bottom: none; }

.update-date {
  color: var(--accent-gold);
  font-family: var(--font-serif);
  font-size: 0.95rem;
  min-width: 100px;
  flex-shrink: 0;
}

.update-text {
  color: var(--text-secondary);
  font-size: 0.95rem;
}

/* Footer */
.site-footer {
  border-top: 1px solid var(--border);
  padding: 2.5rem 0 1.5rem;
  margin-top: 4rem;
  text-align: center;
  color: var(--text-muted);
  font-size: 0.9rem;
}

.site-footer p { color: var(--text-muted); }

.footer-links {
  display: flex;
  gap: 1.5rem;
  justify-content: center;
  margin-bottom: 1rem;
  list-style: none;
}

/* Responsive */
@media (max-width: 860px) {
  h1 { font-size: 2.25rem; }
  .hero h1 { font-size: 2.5rem; }
  h2 { font-size: 1.6rem; }

  .menu-toggle { display: block; }

  .nav-right {
    gap: 0.5rem;
  }

  .nav-links {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    flex-direction: column;
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border);
    padding: 1rem;
  }
  .nav-links.open { display: flex; }

  .lang-switch {
    margin-left: 0;
    font-size: 0.8rem;
  }

  .article-layout {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

  .article-sidebar {
    position: static;
    order: -1;
  }
}