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

:root {
  --bg: #0a0a0a;
  --bg2: #111;
  --bg3: #161616;
  --border: #222;
  --green: #4afa7a;
  --green-dim: #2a6640;
  --text: #d0d0d0;
  --text-dim: #666;
  --text-bright: #f0f0f0;
  --red: #ff5f57;
  --yellow: #ffbd2e;
  --dot-green: #28c840;
}

html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: 'SF Mono', 'Fira Code', 'Fira Mono', 'Cascadia Code', 'Consolas', monospace;
  line-height: 1.6;
  min-height: 100vh;
}

/* NAV */
.site-nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 2rem;
  height: 60px;
  background: rgba(10,10,10,0.9);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}

.nav-logo {
  font-size: 1.3rem;
  color: var(--green);
  font-weight: 700;
  letter-spacing: -0.5px;
  text-decoration: none;
}
.nav-logo span { color: #fff; }

.nav-links { display: flex; gap: 2rem; align-items: center; }
.nav-links a {
  color: var(--text-dim);
  text-decoration: none;
  font-size: 0.85rem;
  transition: color 0.2s;
}
.nav-links a:hover, .nav-links a.active { color: var(--green); }

.nav-cta {
  background: var(--green);
  color: #000;
  border: none;
  padding: 0.45rem 1rem;
  font-family: inherit;
  font-size: 0.8rem;
  font-weight: 700;
  cursor: pointer;
  border-radius: 3px;
  text-decoration: none;
  transition: opacity 0.2s;
}
.nav-cta:hover { opacity: 0.85; }

/* DOCS SHELL */
.docs-shell {
  display: flex;
  min-height: 100vh;
  padding-top: 60px;
}

.sidebar {
  width: 240px;
  flex-shrink: 0;
  position: fixed;
  top: 60px;
  bottom: 0;
  overflow-y: auto;
  border-right: 1px solid var(--border);
  padding: 2rem 1.5rem;
  background: var(--bg);
}

.sidebar-header {
  font-size: 0.7rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--green);
  font-weight: 700;
  margin-bottom: 1.5rem;
}

.sidebar-section-label {
  font-size: 0.65rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--text-dim);
  margin-top: 1.5rem;
  margin-bottom: 0.5rem;
}

.sidebar-nav { display: flex; flex-direction: column; gap: 0.1rem; }

.sidebar-link {
  display: block;
  color: var(--text-dim);
  text-decoration: none;
  font-size: 0.85rem;
  padding: 0.3rem 0.5rem;
  border-radius: 3px;
  transition: color 0.15s, background 0.15s;
}
.sidebar-link:hover { color: var(--text-bright); background: var(--bg2); }
.sidebar-link.active { color: var(--green); }

.sidebar-toggle {
  display: none;
  position: fixed;
  top: 16px;
  right: 1rem;
  z-index: 200;
  background: none;
  border: 1px solid var(--border);
  color: var(--text-dim);
  font-size: 1rem;
  cursor: pointer;
  padding: 0.3rem 0.6rem;
  border-radius: 3px;
  line-height: 1;
}

/* DOCS CONTENT */
.docs-content {
  margin-left: 240px;
  flex: 1;
  max-width: 800px;
  padding: 3rem 3rem 6rem;
}

.docs-content h1 {
  font-size: 2rem;
  font-weight: 800;
  color: var(--text-bright);
  letter-spacing: -1px;
  line-height: 1.2;
  margin-bottom: 0.5rem;
}

.page-desc {
  color: var(--text-dim);
  font-size: 1rem;
  margin-bottom: 2.5rem;
  padding-bottom: 2rem;
  border-bottom: 1px solid var(--border);
  line-height: 1.6;
}

.docs-content h2 {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--text-bright);
  margin-top: 2.5rem;
  margin-bottom: 0.75rem;
  letter-spacing: -0.5px;
}

.docs-content h3 {
  font-size: 1rem;
  font-weight: 700;
  color: var(--text-bright);
  margin-top: 1.5rem;
  margin-bottom: 0.5rem;
}

.docs-content p {
  color: var(--text);
  line-height: 1.75;
  margin-bottom: 1rem;
}

.docs-content hr {
  border: none;
  border-top: 1px solid var(--border);
  margin: 2rem 0;
}

.docs-content a { color: var(--green); text-decoration: none; }
.docs-content a:hover { text-decoration: underline; }

/* CODE */
.docs-content code {
  background: var(--bg2);
  border: 1px solid var(--border);
  padding: 0.1em 0.4em;
  border-radius: 3px;
  font-size: 0.9em;
  color: var(--text-bright);
}

.docs-content pre {
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 1.25rem 1.5rem;
  overflow-x: auto;
  margin: 1rem 0;
}

.docs-content pre code {
  background: none;
  border: none;
  padding: 0;
  font-size: 0.9rem;
  color: var(--green);
}

/* TABLES */
.docs-content table {
  width: 100%;
  border-collapse: collapse;
  border: 1px solid var(--border);
  border-radius: 6px;
  overflow: hidden;
  font-size: 0.875rem;
  margin: 1.25rem 0;
}

.docs-content th {
  padding: 0.75rem 1rem;
  text-align: left;
  background: var(--bg3);
  border-bottom: 1px solid var(--border);
  font-weight: 700;
  font-size: 0.78rem;
  letter-spacing: 0.05em;
  color: var(--text-dim);
}

.docs-content td {
  padding: 0.75rem 1rem;
  border-bottom: 1px solid var(--border);
  color: var(--text);
  vertical-align: top;
}

.docs-content tr:last-child td { border-bottom: none; }
.docs-content tr:hover td { background: rgba(255,255,255,0.02); }

/* LISTS */
.docs-content ul, .docs-content ol {
  margin: 0.5rem 0 1rem 1.5rem;
  color: var(--text);
}

.docs-content li { line-height: 1.75; margin-bottom: 0.2rem; }

/* LEARN MORE */
.learn-more {
  margin-top: 2.5rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border);
}

.learn-more a {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--green);
  text-decoration: none;
  font-size: 0.9rem;
}
.learn-more a:hover { text-decoration: underline; }

/* PREV/NEXT */
.prev-next {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: 4rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border);
  gap: 1rem;
}

.prev-next-link {
  color: var(--text-dim);
  text-decoration: none;
  font-size: 0.875rem;
  transition: color 0.2s;
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
}
.prev-next-link:hover { color: var(--green); }
.prev-next-link.next { text-align: right; margin-left: auto; }

.prev-next-label {
  font-size: 0.68rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-dim);
  opacity: 0.6;
}

/* PACKAGE GRID */
.pkg-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 1px;
  background: var(--border);
  border: 1px solid var(--border);
  border-radius: 8px;
  overflow: hidden;
  margin-top: 1.5rem;
}

.pkg-card {
  background: var(--bg2);
  padding: 1.25rem 1.5rem;
  transition: background 0.2s;
  text-decoration: none;
  display: block;
}
.pkg-card:hover { background: var(--bg3); }

.pkg-tag {
  display: inline-block;
  font-size: 0.65rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-dim);
  background: var(--bg3);
  border: 1px solid var(--border);
  padding: 0.15rem 0.5rem;
  border-radius: 3px;
  margin-bottom: 0.6rem;
}
.pkg-tag.core { color: var(--green); border-color: var(--green-dim); }
.pkg-tag.ui { color: #7aa2f7; border-color: #1e2d5a; }
.pkg-tag.research { color: #e0af68; border-color: #4a3800; }
.pkg-tag.frameworks { color: #bb9af7; border-color: #3a2060; }

.pkg-name {
  font-size: 0.9rem;
  color: var(--text-bright);
  font-weight: 600;
  margin-bottom: 0.3rem;
}
.pkg-card:hover .pkg-name { color: var(--green); }

.pkg-desc {
  font-size: 0.8rem;
  color: var(--text-dim);
  line-height: 1.5;
}

/* CALLOUT */
.callout {
  background: var(--bg2);
  border: 1px solid var(--border);
  border-left: 3px solid var(--green);
  padding: 1rem 1.25rem;
  border-radius: 0 6px 6px 0;
  margin: 1.5rem 0;
}
.callout p { margin: 0; color: var(--text-dim); font-size: 0.9rem; }

/* COMMANDS TABLE - td:first-child is the command */
.docs-content td:first-child code { color: var(--green); }

/* MOBILE */
@media (max-width: 768px) {
  .sidebar {
    transform: translateX(-100%);
    transition: transform 0.25s ease;
    z-index: 50;
  }
  .sidebar.open { transform: translateX(0); }
  .docs-content { margin-left: 0; padding: 2rem 1.25rem 5rem; }
  .sidebar-toggle { display: block; }
  .nav-links { display: none; }
}

/* FOOTER */
footer {
  padding: 2rem;
  text-align: center;
  color: var(--text-dim);
  font-size: 0.8rem;
  border-top: 1px solid var(--border);
  margin-top: 3rem;
}
footer a { color: var(--text-dim); text-decoration: none; }
footer a:hover { color: var(--green); }

@media (max-width: 600px) {
  .prev-next { flex-direction: column; align-items: flex-start; }
  .prev-next-link.next { margin-left: 0; text-align: left; }
  .docs-content h1 { font-size: 1.5rem; }
}