/* ==========================================================================
   Barricade Clash - Modern Editorial & Guides Design System
   ========================================================================== */

:root {
  --bg: #09090b;
  --card-bg: #121215;
  --card-border: #27272a;
  --text-primary: #f4f4f5;
  --text-secondary: #a1a1aa;
  --text-muted: #71717a;
  --accent-indigo: #6366f1;
  --accent-indigo-hover: #4f46e5;
  --accent-amber: #f59e0b;
  --accent-emerald: #10b981;
  --accent-rose: #f43f5e;
  --radius: 12px;
  --font-main: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}

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

body {
  background-color: var(--bg);
  color: var(--text-primary);
  font-family: var(--font-main);
  line-height: 1.75;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}

.site-nav {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(9, 9, 11, 0.88);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--card-border);
  padding: 14px 24px;
}

.nav-container {
  max-width: 1040px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: #fff;
  font-weight: 800;
  font-size: 1.15rem;
  letter-spacing: -0.02em;
}

.nav-brand img {
  width: 28px;
  height: 28px;
  border-radius: 6px;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 20px;
  list-style: none;
}

.nav-links a {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 500;
  transition: color 0.15s ease;
}

.nav-links a:hover,
.nav-links a.active {
  color: #fff;
}

.btn-play {
  background: linear-gradient(135deg, var(--accent-indigo), var(--accent-indigo-hover));
  color: #fff !important;
  padding: 8px 18px;
  border-radius: 8px;
  font-weight: 700 !important;
  font-size: 0.85rem !important;
  box-shadow: 0 4px 14px rgba(99, 102, 241, 0.35);
  transition: transform 0.15s ease, box-shadow 0.15s ease !important;
}

.btn-play:hover {
  transform: translateY(-1px);
  box-shadow: 0 6px 20px rgba(99, 102, 241, 0.5);
}

.page-wrap {
  max-width: 900px;
  margin: 0 auto;
  padding: 48px 24px 80px;
}

.breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.82rem;
  color: var(--text-muted);
  margin-bottom: 20px;
  font-weight: 500;
}

.breadcrumb a {
  color: var(--text-secondary);
  text-decoration: none;
}

.breadcrumb a:hover {
  color: #fff;
}

.page-header {
  margin-bottom: 40px;
  border-bottom: 1px solid var(--card-border);
  padding-bottom: 30px;
}

.page-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: rgba(99, 102, 241, 0.1);
  color: #a5b4fc;
  border: 1px solid rgba(99, 102, 241, 0.25);
  font-size: 0.78rem;
  font-weight: 700;
  padding: 4px 12px;
  border-radius: 999px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 14px;
}

h1 {
  font-size: 2.5rem;
  font-weight: 900;
  line-height: 1.2;
  letter-spacing: -0.03em;
  color: #fff;
  margin-bottom: 14px;
}

.lead {
  font-size: 1.18rem;
  color: var(--text-secondary);
  line-height: 1.7;
}

h2 {
  font-size: 1.6rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: #fff;
  margin-top: 48px;
  margin-bottom: 16px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.step-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  background: rgba(99, 102, 241, 0.15);
  color: #818cf8;
  border-radius: 8px;
  font-size: 0.95rem;
  font-weight: 900;
}

h3 {
  font-size: 1.2rem;
  font-weight: 700;
  color: #e4e4e7;
  margin-top: 28px;
  margin-bottom: 10px;
}

p {
  color: #d4d4d8;
  margin-bottom: 18px;
  font-size: 1.03rem;
}

ul, ol {
  padding-left: 24px;
  margin-bottom: 22px;
  color: #d4d4d8;
}

li {
  margin-bottom: 8px;
}

strong {
  color: #fff;
}

.callout {
  padding: 20px 24px;
  border-radius: var(--radius);
  margin: 28px 0;
  background: var(--card-bg);
  border: 1px solid var(--card-border);
}

.callout.tip {
  border-left: 4px solid var(--accent-amber);
  background: linear-gradient(135deg, rgba(245, 158, 11, 0.06) 0%, rgba(18, 18, 21, 0.95) 100%);
}

.callout.rule {
  border-left: 4px solid var(--accent-indigo);
  background: linear-gradient(135deg, rgba(99, 102, 241, 0.06) 0%, rgba(18, 18, 21, 0.95) 100%);
}

.callout.warning {
  border-left: 4px solid var(--accent-rose);
  background: linear-gradient(135deg, rgba(244, 63, 94, 0.06) 0%, rgba(18, 18, 21, 0.95) 100%);
}

.callout-title {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.95rem;
  font-weight: 800;
  margin-bottom: 8px;
  color: #fff;
}

.callout p:last-child {
  margin-bottom: 0;
}

.diagram-card {
  background: #0e0e11;
  border: 1px solid var(--card-border);
  border-radius: var(--radius);
  padding: 24px;
  margin: 32px 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
}

.diagram-row {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 32px;
  width: 100%;
  margin-bottom: 12px;
}

.diagram-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
}

.diagram-caption {
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--text-secondary);
}

.diagram-subtext {
  font-size: 0.88rem;
  color: var(--text-muted);
  max-width: 600px;
}

.grid-2 {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 20px;
  margin: 28px 0;
}

.feature-box {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--radius);
  padding: 24px;
}

.feature-box h4 {
  font-size: 1.1rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 8px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.cta-banner {
  background: radial-gradient(circle at top, rgba(99, 102, 241, 0.18) 0%, rgba(18, 18, 21, 0.95) 100%);
  border: 1px solid rgba(99, 102, 241, 0.35);
  border-radius: 16px;
  padding: 36px 32px;
  margin-top: 56px;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
}

.cta-banner h3 {
  font-size: 1.6rem;
  font-weight: 900;
  color: #fff;
  margin: 0;
}

.cta-banner p {
  color: var(--text-secondary);
  max-width: 520px;
  margin: 0;
}

.cta-btn-lg {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  background: #4f46e5;
  color: #fff;
  font-weight: 800;
  font-size: 1.05rem;
  padding: 14px 32px;
  border-radius: 10px;
  text-decoration: none;
  box-shadow: 0 8px 24px rgba(79, 70, 229, 0.4);
  transition: transform 0.15s ease, background 0.15s ease;
}

.cta-btn-lg:hover {
  background: #4338ca;
  transform: translateY(-2px);
}

.site-footer {
  border-top: 1px solid var(--card-border);
  padding: 48px 24px 32px;
  background: #09090b;
  margin-top: 60px;
}

.footer-inner {
  max-width: 1040px;
  margin: 0 auto;
  text-align: center;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 16px 24px;
  margin-bottom: 24px;
}

.footer-links a {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.88rem;
  transition: color 0.15s;
}

.footer-links a:hover {
  color: #fff;
}

.footer-copy {
  color: var(--text-muted);
  font-size: 0.82rem;
}

@media (max-width: 768px) {
  h1 { font-size: 2rem; }
  .nav-links { display: none; }
  .page-wrap { padding: 32px 16px 60px; }
  .cta-banner { padding: 28px 20px; }
}