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

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

:root {
  --accent: #1D9E75;
  --accent-light: #E1F5EE;
  --accent-dark: #0F6E56;
  --accent-tag-text: #0F6E56;
  --bg: #ffffff;
  --bg-secondary: #f7f7f5;
  --bg-tertiary: #f1f0ec;
  --text: #1a1a1a;
  --text-secondary: #555551;
  --text-tertiary: #888780;
  --border: rgba(0,0,0,0.1);
  --border-hover: rgba(0,0,0,0.2);
  --radius: 8px;
  --radius-lg: 12px;
  --mono: 'JetBrains Mono', 'Consolas', monospace;
  --sans: 'Inter', system-ui, sans-serif;
  --max-width: 1100px;
  --nav-height: 56px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --accent: #5DCAA5;
    --accent-light: #085041;
    --accent-dark: #9FE1CB;
    --accent-tag-text: #9FE1CB;
    --bg: #141414;
    --bg-secondary: #1e1e1c;
    --bg-tertiary: #252523;
    --text: #f0ede8;
    --text-secondary: #a8a59f;
    --text-tertiary: #666460;
    --border: rgba(255,255,255,0.1);
    --border-hover: rgba(255,255,255,0.2);
  }
}

html { font-size: 16px; scroll-behavior: smooth; }
body { font-family: var(--sans); background: var(--bg); color: var(--text); line-height: 1.6; -webkit-font-smoothing: antialiased; }

a { color: inherit; text-decoration: none; }
code, pre { font-family: var(--mono); }

/* ── Nav ── */
.nav {
  position: sticky; top: 0; z-index: 100;
  height: var(--nav-height);
  display: flex; align-items: center; justify-content: space-between;
  padding: 0 2rem;
  background: var(--bg);
  border-bottom: 1px solid var(--border);
}
.nav-logo {
  font-family: var(--mono); font-size: 14px; font-weight: 700;
  color: var(--text); display: flex; align-items: center; gap: 8px;
  text-decoration: none;
}
.nav-logo-dot { width: 8px; height: 8px; border-radius: 50%; background: var(--accent); display: inline-block; flex-shrink: 0; }
.nav-logo span { color: var(--accent); }
.nav-links { display: flex; align-items: center; gap: 6px; }
.nav-links a {
  font-family: var(--mono); font-size: 12px; color: var(--text-secondary);
  padding: 6px 12px; border-radius: var(--radius);
  transition: background 0.15s, color 0.15s;
}
.nav-links a:hover, .nav-links a.active { background: var(--bg-tertiary); color: var(--text); }
.nav-search {
  display: flex; align-items: center; gap: 6px;
  font-family: var(--mono); font-size: 12px; color: var(--text-tertiary);
  border: 1px solid var(--border); border-radius: var(--radius);
  padding: 5px 10px; cursor: pointer; background: var(--bg-secondary);
  transition: border-color 0.15s;
}
.nav-search:hover { border-color: var(--border-hover); }
.nav-search input {
  background: none; border: none; outline: none;
  font-family: var(--mono); font-size: 12px; color: var(--text);
  width: 160px;
}
.nav-search input::placeholder { color: var(--text-tertiary); }
.nav-hamburger { display: none; background: none; border: none; cursor: pointer; color: var(--text); padding: 4px; }

/* ── Layout ── */
.container { max-width: var(--max-width); margin: 0 auto; padding: 0 2rem; }
.page-content { max-width: var(--max-width); margin: 0 auto; padding: 0 2rem; }

/* ── Hero ── */
.hero {
  border-bottom: 1px solid var(--border);
  padding: 4rem 2rem 3rem;
  max-width: var(--max-width); margin: 0 auto;
  display: grid; grid-template-columns: 1fr 1fr; gap: 3rem; align-items: center;
}
.hero-eyebrow {
  font-family: var(--mono); font-size: 10px; color: var(--accent);
  letter-spacing: 2px; text-transform: uppercase; margin-bottom: 1rem;
  display: flex; align-items: center; gap: 10px;
}
.hero-eyebrow::before { content: ''; display: block; width: 24px; height: 1px; background: var(--accent); }
.hero h1 {
  font-family: var(--mono); font-size: 30px; font-weight: 700;
  color: var(--text); line-height: 1.2; margin-bottom: 1rem;
}
.hero h1 em { font-style: normal; color: var(--accent); }
.hero-sub { font-size: 14px; color: var(--text-secondary); line-height: 1.75; margin-bottom: 1.75rem; max-width: 440px; }
.hero-ctas { display: flex; gap: 10px; flex-wrap: wrap; }
.btn-primary {
  font-family: var(--mono); font-size: 12px; padding: 10px 20px;
  background: var(--accent); color: #fff; border: none;
  border-radius: var(--radius); cursor: pointer; text-decoration: none;
  display: inline-flex; align-items: center; gap: 6px;
  transition: opacity 0.15s;
}
.btn-primary:hover { opacity: 0.88; }
.btn-secondary {
  font-family: var(--mono); font-size: 12px; padding: 10px 20px;
  background: transparent; color: var(--text);
  border: 1px solid var(--border-hover); border-radius: var(--radius);
  cursor: pointer; text-decoration: none; display: inline-flex; align-items: center; gap: 6px;
  transition: background 0.15s;
}
.btn-secondary:hover { background: var(--bg-secondary); }

/* Terminal panel */
.terminal {
  background: var(--bg-secondary);
  border: 1px solid var(--border); border-radius: var(--radius-lg);
  font-family: var(--mono); font-size: 12px; overflow: hidden;
}
.terminal-bar {
  display: flex; align-items: center; gap: 6px;
  padding: 10px 14px; border-bottom: 1px solid var(--border);
}
.t-dot { width: 10px; height: 10px; border-radius: 50%; }
.t-dot-r { background: #E24B4A; }
.t-dot-y { background: #EF9F27; }
.t-dot-g { background: var(--accent); }
.terminal-title { font-size: 11px; color: var(--text-tertiary); margin: 0 auto; }
.terminal-body { padding: 14px; line-height: 2; }
.t-prompt { color: var(--accent); }
.t-cmd { color: var(--text); }
.t-out { color: var(--text-tertiary); padding-left: 14px; display: block; }
.t-out a { color: var(--text-secondary); text-decoration: none; }
.t-out a:hover { color: var(--accent); }

/* ── Section shell ── */
.section { border-bottom: 1px solid var(--border); padding: 2.5rem 2rem; max-width: var(--max-width); margin: 0 auto; }
.section-header { display: flex; align-items: baseline; justify-content: space-between; margin-bottom: 1.5rem; }
.section-label { font-family: var(--mono); font-size: 10px; color: var(--text-tertiary); letter-spacing: 2px; text-transform: uppercase; }
.section-link { font-family: var(--mono); font-size: 11px; color: var(--accent); text-decoration: none; }
.section-link:hover { text-decoration: underline; }

/* ── Tool category cards ── */
.tool-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(160px, 1fr)); gap: 10px; }
.tool-card {
  background: var(--bg); border: 1px solid var(--border);
  border-radius: var(--radius-lg); padding: 1rem 1.1rem;
  transition: border-color 0.15s, background 0.15s; cursor: pointer;
  text-decoration: none; display: block;
}
.tool-card:hover { border-color: var(--accent); background: var(--bg-secondary); }
.tool-card-icon { font-size: 22px; color: var(--accent); margin-bottom: 8px; }
.tool-card-title { font-size: 13px; font-weight: 500; color: var(--text); margin-bottom: 3px; }
.tool-card-count { font-family: var(--mono); font-size: 11px; color: var(--text-tertiary); }

/* ── KB list ── */
.kb-list { display: flex; flex-direction: column; }
.kb-row {
  display: flex; align-items: center; justify-content: space-between;
  gap: 16px; padding: 14px 0; border-bottom: 1px solid var(--border);
  cursor: pointer; text-decoration: none;
}
.kb-row:last-child { border-bottom: none; }
.kb-row:hover .kb-title { color: var(--accent); }
.kb-left { display: flex; flex-direction: column; gap: 6px; flex: 1; }
.kb-title { font-size: 13px; font-weight: 500; color: var(--text); transition: color 0.15s; line-height: 1.4; }
.kb-tags { display: flex; gap: 5px; flex-wrap: wrap; }
.tag {
  font-family: var(--mono); font-size: 10px; padding: 2px 7px;
  border-radius: 3px; background: var(--accent-light); color: var(--accent-tag-text);
}
.kb-arrow { font-size: 14px; color: var(--text-tertiary); flex-shrink: 0; }

/* ── Footer ── */
footer {
  border-top: 1px solid var(--border);
  padding: 1.5rem 2rem;
  display: flex; justify-content: space-between; align-items: center;
  max-width: var(--max-width); margin: 0 auto;
}
.footer-mono { font-family: var(--mono); font-size: 10px; color: var(--text-tertiary); letter-spacing: 1px; }
.footer-status { display: flex; align-items: center; gap: 6px; }
.status-dot { width: 6px; height: 6px; border-radius: 50%; background: var(--accent); }

/* ── KB / Article page ── */
.page-header { padding: 3rem 0 2rem; border-bottom: 1px solid var(--border); margin-bottom: 2rem; }
.page-header .eyebrow { font-family: var(--mono); font-size: 10px; color: var(--accent); letter-spacing: 2px; text-transform: uppercase; margin-bottom: 0.75rem; }
.page-header h1 { font-family: var(--mono); font-size: 24px; font-weight: 700; line-height: 1.3; margin-bottom: 0.75rem; }
.page-header .meta { font-size: 13px; color: var(--text-secondary); display: flex; gap: 16px; flex-wrap: wrap; align-items: center; margin-top: 1rem; }
.page-header .meta .tag { font-size: 11px; }

.article-body { padding: 2rem 0 4rem; max-width: 720px; }
.article-body h2 { font-family: var(--mono); font-size: 16px; font-weight: 700; margin: 2.5rem 0 0.75rem; color: var(--text); padding-top: 1.5rem; border-top: 1px solid var(--border); }
.article-body h2:first-of-type { border-top: none; padding-top: 0; margin-top: 0; }
.article-body h3 { font-size: 14px; font-weight: 500; margin: 1.5rem 0 0.5rem; color: var(--text); }
.article-body p { font-size: 14px; color: var(--text-secondary); line-height: 1.8; margin-bottom: 1rem; }
.article-body ul, .article-body ol { padding-left: 1.5rem; margin-bottom: 1rem; }
.article-body li { font-size: 14px; color: var(--text-secondary); line-height: 1.8; margin-bottom: 0.25rem; }
.article-body strong { color: var(--text); font-weight: 500; }
.article-body a { color: var(--accent); text-decoration: underline; text-underline-offset: 2px; }
.article-body pre {
  background: var(--bg-secondary); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 1rem 1.25rem;
  overflow-x: auto; margin: 1rem 0;
}
.article-body pre code { font-size: 12px; color: var(--text); line-height: 1.7; }
.article-body code:not(pre code) {
  font-family: var(--mono); font-size: 12px;
  background: var(--bg-tertiary); padding: 1px 5px;
  border-radius: 3px; color: var(--accent-dark);
}

.callout {
  background: var(--bg-secondary); border: 1px solid var(--border);
  border-left: 3px solid var(--accent); border-radius: 0 var(--radius) var(--radius) 0;
  padding: 1rem 1.25rem; margin: 1.5rem 0;
}
.callout p { margin: 0; font-size: 13px; }

.back-link { font-family: var(--mono); font-size: 12px; color: var(--text-tertiary); text-decoration: none; display: inline-flex; align-items: center; gap: 6px; margin-bottom: 2rem; }
.back-link:hover { color: var(--accent); }

/* ── Tools page ── */
.tools-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 12px; }
.tool-item {
  background: var(--bg); border: 1px solid var(--border); border-radius: var(--radius-lg);
  padding: 1.25rem; text-decoration: none; display: block;
  transition: border-color 0.15s;
}
.tool-item:hover { border-color: var(--accent); }
.tool-item-header { display: flex; align-items: flex-start; gap: 12px; margin-bottom: 8px; }
.tool-item-icon { font-size: 20px; color: var(--accent); flex-shrink: 0; margin-top: 2px; }
.tool-item-name { font-size: 14px; font-weight: 500; color: var(--text); margin-bottom: 2px; }
.tool-item-url { font-family: var(--mono); font-size: 11px; color: var(--text-tertiary); }
.tool-item-desc { font-size: 13px; color: var(--text-secondary); line-height: 1.6; }
.tool-item-badge {
  display: inline-block; margin-top: 10px;
  font-family: var(--mono); font-size: 10px; padding: 2px 8px;
  border-radius: 3px; background: var(--accent-light); color: var(--accent-tag-text);
}

.category-filter { display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 1.5rem; }
.filter-btn {
  font-family: var(--mono); font-size: 11px; padding: 6px 12px;
  border: 1px solid var(--border); border-radius: var(--radius);
  background: var(--bg); color: var(--text-secondary); cursor: pointer;
  transition: background 0.15s, border-color 0.15s, color 0.15s;
}
.filter-btn:hover, .filter-btn.active { background: var(--accent); border-color: var(--accent); color: #fff; }

/* ── About page ── */
.about-grid { display: grid; grid-template-columns: 2fr 1fr; gap: 3rem; padding: 2.5rem 0 4rem; }
.about-body p { font-size: 14px; color: var(--text-secondary); line-height: 1.85; margin-bottom: 1.25rem; }
.about-body h2 { font-family: var(--mono); font-size: 15px; font-weight: 700; margin: 2rem 0 0.75rem; color: var(--text); }
.about-sidebar { }
.sidebar-card {
  background: var(--bg-secondary); border: 1px solid var(--border);
  border-radius: var(--radius-lg); padding: 1.25rem; margin-bottom: 1rem;
}
.sidebar-card-label { font-family: var(--mono); font-size: 10px; color: var(--text-tertiary); letter-spacing: 2px; text-transform: uppercase; margin-bottom: 0.75rem; }
.sidebar-stat { font-family: var(--mono); font-size: 22px; font-weight: 700; color: var(--accent); }
.sidebar-stat-label { font-size: 12px; color: var(--text-tertiary); margin-top: 2px; }
.sidebar-list { list-style: none; padding: 0; }
.sidebar-list li { font-size: 13px; color: var(--text-secondary); padding: 5px 0; border-bottom: 1px solid var(--border); }
.sidebar-list li:last-child { border-bottom: none; }

/* ── Search overlay ── */
.search-overlay {
  display: none; position: fixed; inset: 0; z-index: 999;
  background: rgba(0,0,0,0.5); align-items: flex-start; justify-content: center;
  padding-top: 120px;
}
.search-overlay.open { display: flex; }
.search-box {
  background: var(--bg); border: 1px solid var(--border);
  border-radius: var(--radius-lg); width: 100%; max-width: 560px;
  padding: 1rem 1.25rem; box-shadow: 0 8px 32px rgba(0,0,0,0.12);
}
.search-input-row { display: flex; align-items: center; gap: 8px; margin-bottom: 1rem; }
.search-input-row input {
  flex: 1; font-family: var(--mono); font-size: 14px; background: none;
  border: none; outline: none; color: var(--text);
}
.search-input-row input::placeholder { color: var(--text-tertiary); }
.search-results { max-height: 320px; overflow-y: auto; }
.search-result-item {
  padding: 10px 0; border-bottom: 1px solid var(--border);
  display: flex; flex-direction: column; gap: 4px; cursor: pointer;
  text-decoration: none;
}
.search-result-item:last-child { border-bottom: none; }
.search-result-item:hover .search-result-title { color: var(--accent); }
.search-result-title { font-size: 13px; font-weight: 500; color: var(--text); }
.search-result-section { font-family: var(--mono); font-size: 11px; color: var(--text-tertiary); }
.search-empty { font-family: var(--mono); font-size: 12px; color: var(--text-tertiary); padding: 1rem 0; text-align: center; }

/* ── Responsive ── */
@media (max-width: 768px) {
  .hero { grid-template-columns: 1fr; gap: 2rem; padding: 2rem 1.25rem; }
  .hero-terminal { display: none; }
  .nav-links a:not(.nav-search) { display: none; }
  .nav-hamburger { display: block; }
  .section, .page-content { padding-left: 1.25rem; padding-right: 1.25rem; }
  .about-grid { grid-template-columns: 1fr; }
  footer { flex-direction: column; gap: 8px; text-align: center; }
  .tool-grid { grid-template-columns: repeat(auto-fit, minmax(140px, 1fr)); }
}