:root {
  --bg: #0b0d12;
  --bg-elev: #131722;
  --bg-elev-2: #1a1f2e;
  --border: #232a3d;
  --text: #e8ecf4;
  --text-dim: #a0a8bd;
  --text-muted: #6b7390;
  --accent: #d97706;
  --accent-soft: #fbbf24;
  --code-bg: #0f1320;
  --good: #34d399;
  --warn: #fbbf24;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; scroll-padding-top: 1rem; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Inter, sans-serif;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--accent-soft); text-decoration: none; }
a:hover { text-decoration: underline; }

h1, h2, h3, h4 { color: #fff; line-height: 1.25; font-weight: 700; }

code, pre, kbd { font-family: ui-monospace, "JetBrains Mono", "SF Mono", Menlo, Consolas, monospace; }

kbd {
  background: var(--bg-elev-2);
  border: 1px solid var(--border);
  border-bottom-width: 2px;
  border-radius: 6px;
  padding: 2px 7px;
  font-size: 0.85em;
  color: var(--text);
}

/* Sidebar */
.sidebar a {
  display: block;
  color: var(--text-dim);
  padding: 6px 12px;
  border-left: 2px solid transparent;
  font-size: 0.92rem;
  transition: color 120ms, border-color 120ms;
}
.sidebar a:hover { color: var(--text); text-decoration: none; }
.sidebar a.active {
  color: var(--accent-soft);
  border-left-color: var(--accent);
  background: rgba(217, 119, 6, 0.08);
}

/* Section spacing */
section.step {
  scroll-margin-top: 1rem;
  padding: 4rem 0 3rem;
  border-bottom: 1px solid var(--border);
}
section.step:last-of-type { border-bottom: none; }

.step-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: 999px;
  background: var(--accent);
  color: #fff;
  font-weight: 700;
  font-size: 0.95rem;
  margin-right: 12px;
}

/* Code blocks */
.code-wrap {
  position: relative;
  background: var(--code-bg);
  border: 1px solid var(--border);
  border-radius: 10px;
  margin: 0.75rem 0;
  overflow: hidden;
}
.code-wrap pre {
  margin: 0;
  padding: 1rem 1.1rem;
  font-size: 0.88rem;
  overflow-x: auto;
  background: transparent;
}
.code-wrap pre code { background: transparent; padding: 0; }
.copy-btn {
  position: absolute;
  top: 8px;
  right: 8px;
  background: var(--bg-elev-2);
  color: var(--text-dim);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 4px 10px;
  font-size: 0.78rem;
  cursor: pointer;
  transition: all 120ms;
}
.copy-btn:hover { color: var(--text); border-color: var(--accent); }
.copy-btn.copied { color: var(--good); border-color: var(--good); }

/* Inline code */
:not(pre) > code {
  background: var(--bg-elev-2);
  border: 1px solid var(--border);
  border-radius: 5px;
  padding: 1px 6px;
  font-size: 0.88em;
  color: var(--accent-soft);
}

/* OS Tabs */
.os-tabs {
  display: flex;
  gap: 4px;
  background: var(--bg-elev);
  padding: 4px;
  border-radius: 10px;
  border: 1px solid var(--border);
  width: fit-content;
  margin: 1rem 0 0.5rem;
}
.os-tab {
  padding: 6px 16px;
  border-radius: 7px;
  background: transparent;
  border: none;
  color: var(--text-dim);
  font-weight: 500;
  font-size: 0.9rem;
  cursor: pointer;
  transition: all 120ms;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.os-tab:hover { color: var(--text); }
.os-tab[aria-selected="true"] {
  background: var(--accent);
  color: #fff;
}
.os-panel { display: none; }
.os-panel.active { display: block; }

/* Cards */
.card {
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1.25rem 1.4rem;
}
.card h3 { margin-top: 0; }

.host-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1rem;
}

/* Compare table */
table.compare {
  width: 100%;
  border-collapse: collapse;
  margin-top: 1rem;
  font-size: 0.92rem;
}
table.compare th, table.compare td {
  padding: 10px 12px;
  border-bottom: 1px solid var(--border);
  text-align: left;
}
table.compare th {
  background: var(--bg-elev);
  color: var(--text-dim);
  font-weight: 600;
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

/* Roadmap pills in hero */
.roadmap {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 1.25rem;
}
.roadmap-step {
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 6px 14px;
  font-size: 0.85rem;
  color: var(--text-dim);
}
.roadmap-step strong { color: var(--accent-soft); margin-right: 6px; }

/* Callouts */
.callout {
  border-left: 3px solid var(--accent);
  background: rgba(217, 119, 6, 0.08);
  padding: 0.85rem 1rem;
  border-radius: 0 8px 8px 0;
  margin: 1rem 0;
  font-size: 0.93rem;
}
.callout.warn { border-color: var(--warn); background: rgba(251, 191, 36, 0.08); }
.callout.good { border-color: var(--good); background: rgba(52, 211, 153, 0.08); }
.callout strong { color: #fff; }

/* Mobile */
@media (max-width: 900px) {
  .sidebar-col { display: none; }
}