@import url('https://fonts.googleapis.com/css2?family=JetBrains+Mono:wght@400;500;600;700&family=Outfit:wght@300;400;500;600;700&display=swap');

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

:root {
  --green: #45b33d;
  --green-dim: #3a9632;
  --green-glow: rgba(69, 179, 61, 0.12);
  --green-ghost: rgba(69, 179, 61, 0.06);
  --surface: #fafbfc;
  --card: #ffffff;
  --border: #e8ebed;
  --border-hover: #d0d4d8;
  --text: #1a1d21;
  --text-secondary: #5a6270;
  --text-muted: #8b919a;
  --mono: 'JetBrains Mono', monospace;
  --sans: 'Outfit', -apple-system, sans-serif;
  --radius: 12px;
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.04), 0 1px 2px rgba(0,0,0,0.03);
  --shadow-md: 0 4px 16px rgba(0,0,0,0.06), 0 1px 4px rgba(0,0,0,0.04);
  --shadow-lg: 0 12px 40px rgba(0,0,0,0.08), 0 4px 12px rgba(0,0,0,0.04);
}

body {
  font-family: var(--sans);
  background: var(--surface);
  color: var(--text);
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}

/* ── Topbar ── */
.topbar {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(250, 251, 252, 0.85);
  backdrop-filter: blur(16px) saturate(180%);
  -webkit-backdrop-filter: blur(16px) saturate(180%);
  border-bottom: 1px solid var(--border);
  padding: 0 2rem;
}
.topbar-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
  gap: 1.5rem;
}
.topbar-brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  text-decoration: none;
  flex-shrink: 0;
}
.topbar-logo {
  width: 32px;
  height: 32px;
  background: var(--green);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-family: var(--mono);
  font-weight: 700;
  font-size: 14px;
  letter-spacing: -0.5px;
}
.topbar-title {
  font-weight: 600;
  font-size: 15px;
  color: var(--text);
  letter-spacing: -0.3px;
}
.topbar-title span {
  color: var(--text-muted);
  font-weight: 400;
  margin-left: 0.25rem;
}

/* ── Search ── */
.search-wrap {
  position: relative;
  flex: 1;
  max-width: 380px;
}
.search-icon {
  position: absolute;
  left: 14px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-muted);
  pointer-events: none;
  width: 16px;
  height: 16px;
}
.search {
  width: 100%;
  padding: 9px 14px 9px 38px;
  border: 1px solid var(--border);
  border-radius: 10px;
  font-family: var(--sans);
  font-size: 14px;
  color: var(--text);
  background: var(--card);
  outline: none;
  transition: border-color 0.2s, box-shadow 0.2s;
}
.search::placeholder { color: var(--text-muted); }
.search:focus {
  border-color: var(--green);
  box-shadow: 0 0 0 3px var(--green-glow);
}

.topbar-meta {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex-shrink: 0;
}
.doc-count {
  font-family: var(--mono);
  font-size: 12px;
  font-weight: 500;
  color: var(--text-muted);
  background: var(--green-ghost);
  border: 1px solid var(--green-glow);
  padding: 4px 10px;
  border-radius: 6px;
}

/* ── Main ── */
.main {
  max-width: 1200px;
  margin: 0 auto;
  padding: 2.5rem 2rem 4rem;
}

/* ── Hero ── */
.hero {
  text-align: center;
  margin-bottom: 3rem;
  padding: 2rem 0;
}
.hero h1 {
  font-size: clamp(28px, 4vw, 42px);
  font-weight: 700;
  letter-spacing: -1.2px;
  line-height: 1.15;
  margin-bottom: 0.75rem;
}
.hero h1 em {
  font-style: normal;
  background: linear-gradient(135deg, var(--green), #2ecc71);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.hero p {
  font-size: 16px;
  color: var(--text-secondary);
  max-width: 500px;
  margin: 0 auto;
  line-height: 1.6;
}

/* ── Category ── */
.category {
  margin-bottom: 2.5rem;
}
.category-header {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 1rem;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid var(--border);
}
.category-icon {
  width: 36px;
  height: 36px;
  border-radius: 9px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.category-icon svg { width: 18px; height: 18px; }
.cat-strategy .category-icon { background: #fef3c7; color: #d97706; }
.cat-technical .category-icon { background: #dbeafe; color: #2563eb; }
.cat-marketing .category-icon { background: #dcfce7; color: #16a34a; }
.cat-reference .category-icon { background: #f3e8ff; color: #9333ea; }
.category-label {
  font-size: 13px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.8px;
  color: var(--text-secondary);
}
.category-count {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--text-muted);
  background: var(--surface);
  border: 1px solid var(--border);
  padding: 2px 8px;
  border-radius: 5px;
  margin-left: auto;
}

/* ── Doc Grid ── */
.doc-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 0.75rem;
}

/* ── Doc Card ── */
.doc-card {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  padding: 1rem 1.25rem;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  text-decoration: none;
  color: inherit;
  transition: all 0.2s ease;
  position: relative;
  overflow: hidden;
}
.doc-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 3px;
  height: 100%;
  background: transparent;
  transition: background 0.2s;
  border-radius: 0 3px 3px 0;
}
.doc-card:hover {
  border-color: var(--border-hover);
  box-shadow: var(--shadow-md);
  transform: translateY(-1px);
}
.cat-strategy .doc-card:hover::before { background: #d97706; }
.cat-technical .doc-card:hover::before { background: #2563eb; }
.cat-marketing .doc-card:hover::before { background: #16a34a; }
.cat-reference .doc-card:hover::before { background: #9333ea; }

.doc-icon {
  width: 38px;
  height: 38px;
  border-radius: 8px;
  background: var(--surface);
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  font-family: var(--mono);
  font-size: 13px;
  font-weight: 600;
  color: var(--text-muted);
  transition: all 0.2s;
}
.doc-card:hover .doc-icon {
  background: var(--green-ghost);
  border-color: var(--green);
  color: var(--green);
}

.doc-info { flex: 1; min-width: 0; }
.doc-name {
  font-weight: 600;
  font-size: 14px;
  color: var(--text);
  letter-spacing: -0.2px;
  margin-bottom: 3px;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}
.doc-name .badge-new {
  font-family: var(--mono);
  font-size: 9px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  background: var(--green);
  color: white;
  padding: 1px 6px;
  border-radius: 4px;
}
.doc-desc {
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.45;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.doc-meta {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-top: 6px;
  font-family: var(--mono);
  font-size: 11px;
  color: var(--text-muted);
}
.doc-meta span {
  display: flex;
  align-items: center;
  gap: 4px;
}
.doc-meta svg { width: 12px; height: 12px; }

.doc-arrow {
  align-self: center;
  color: var(--text-muted);
  opacity: 0;
  transform: translateX(-4px);
  transition: all 0.2s;
  flex-shrink: 0;
}
.doc-card:hover .doc-arrow {
  opacity: 1;
  transform: translateX(0);
  color: var(--green);
}

/* ── Empty State ── */
.empty-state {
  text-align: center;
  padding: 3rem 1rem;
  color: var(--text-muted);
  font-size: 14px;
  display: none;
}
.empty-state.visible { display: block; }

/* ── Footer ── */
.footer {
  text-align: center;
  padding: 2rem;
  font-size: 12px;
  color: var(--text-muted);
  border-top: 1px solid var(--border);
  max-width: 1200px;
  margin: 0 auto;
}
.footer a {
  color: var(--green-dim);
  text-decoration: none;
}
.footer a:hover { text-decoration: underline; }

/* ── Responsive ── */
@media (max-width: 640px) {
  .topbar { padding: 0 1rem; }
  .topbar-title span { display: none; }
  .main { padding: 1.5rem 1rem 3rem; }
  .doc-grid { grid-template-columns: 1fr; }
  .search-wrap { max-width: 200px; }
  .doc-count { display: none; }
}

/* ── Prose (doc pages) ── */
.prose { max-width: 800px; margin: 0 auto; line-height: 1.75; }
.prose h1 { font-size: 2rem; font-weight: 700; letter-spacing: -0.8px; margin: 0 0 1rem; border-bottom: 1px solid var(--border); padding-bottom: 0.75rem; }
.prose h2 { font-size: 1.5rem; font-weight: 700; letter-spacing: -0.5px; margin: 2.5rem 0 0.75rem; }
.prose h3 { font-size: 1.2rem; font-weight: 600; margin: 2rem 0 0.5rem; }
.prose h4 { font-size: 1.05rem; font-weight: 600; margin: 1.5rem 0 0.5rem; }
.prose p { margin: 0.75rem 0; color: var(--text-secondary); }
.prose a { color: var(--green); text-decoration: underline; text-underline-offset: 2px; }
.prose a:hover { color: var(--green-dim); }
.prose strong { color: var(--text); font-weight: 600; }
.prose em { font-style: italic; }
.prose ul, .prose ol { margin: 0.75rem 0; padding-left: 1.5rem; color: var(--text-secondary); }
.prose li { margin: 0.35rem 0; }
.prose li::marker { color: var(--green); }
.prose blockquote { border-left: 3px solid var(--green); margin: 1.25rem 0; padding: 0.75rem 1.25rem; background: var(--green-ghost); border-radius: 0 8px 8px 0; }
.prose blockquote p { color: var(--text-secondary); margin: 0; }
.prose code { font-family: var(--mono); font-size: 0.875em; background: var(--surface); border: 1px solid var(--border); padding: 2px 6px; border-radius: 4px; color: var(--green-dim); }
.prose pre { margin: 1.25rem 0; padding: 1.25rem; background: #1a1d21; border-radius: 10px; overflow-x: auto; border: 1px solid #2a2d31; }
.prose pre code { background: none; border: none; padding: 0; color: #e2e8f0; font-size: 13px; line-height: 1.6; }
.prose table { width: 100%; border-collapse: collapse; margin: 1.25rem 0; font-size: 14px; }
.prose th { text-align: left; padding: 10px 14px; background: var(--surface); border: 1px solid var(--border); font-weight: 600; color: var(--text); }
.prose td { padding: 10px 14px; border: 1px solid var(--border); color: var(--text-secondary); }
.prose tr:hover td { background: var(--green-ghost); }
.prose hr { border: none; border-top: 1px solid var(--border); margin: 2rem 0; }
.prose img { max-width: 100%; border-radius: 8px; margin: 1rem 0; }

/* ── Doc page nav ── */
.doc-topnav { display: flex; align-items: center; gap: 0.75rem; margin-bottom: 2rem; font-size: 13px; }
.doc-topnav a { color: var(--green); text-decoration: none; font-weight: 500; display: inline-flex; align-items: center; gap: 4px; }
.doc-topnav a:hover { text-decoration: underline; }
.doc-topnav .separator { color: var(--text-muted); }
.doc-topnav .current { color: var(--text-secondary); font-weight: 500; }