:root {
  --bg: #0b0f14;
  --surface: #121922;
  --surface-2: #1b2430;
  --text: #d6dde5;
  --muted: #90a1b3;
  --border: #2c3847;
  --accent: #6ca5ff;
  --danger: #d47878;
}

body[data-theme="light"] {
  --bg: #eef1f4;
  --surface: #ffffff;
  --surface-2: #f3f6f9;
  --text: #1a2430;
  --muted: #4e6073;
  --border: #d7dfe7;
  --accent: #2358a5;
  --danger: #b03a3a;
}

* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: Inter, Segoe UI, Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
}

.layout { display: grid; grid-template-columns: 260px 1fr; min-height: 100vh; }
.sidebar { border-right: 1px solid var(--border); padding: 20px; background: var(--surface); overflow-y: auto; }
.sidebar h1 { margin: 0; font-size: 1.25rem; }
.subtitle { color: var(--muted); margin: 8px 0 18px; font-size: 0.86rem; }

nav { display: grid; gap: 8px; margin-top: 14px; }
.nav-link, .button {
  width: 100%; text-align: left; border: 1px solid var(--border);
  padding: 8px 10px; border-radius: 6px; background: var(--surface-2);
  color: var(--text); cursor: pointer;
}
.nav-link.active { border-color: var(--accent); color: var(--accent); }
.button.secondary { margin-top: 6px; margin-bottom: 12px; }

.sidebar-section {
  margin-top: 18px;
  border-top: 1px solid var(--border);
  padding-top: 14px;
}
.sidebar-section h2 {
  margin: 0 0 10px;
  font-size: 0.8rem;
  letter-spacing: 0.06em;
  color: var(--muted);
}
.ecosystem-collapsible {
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--surface-2);
  margin-bottom: 8px;
  padding: 8px;
}
.ecosystem-collapsible > summary {
  cursor: pointer;
  font-weight: 600;
}
.module-link {
  margin-top: 6px;
  text-align: left;
}

.content { padding: 20px 24px; }
.view { display: none; }
.view.active { display: block; }

.panel {
  border: 1px solid var(--border); background: var(--surface);
  border-radius: 8px; padding: 14px; margin-bottom: 14px;
}
.panel.inset { background: var(--surface-2); margin-bottom: 0; }
.panel.terminal { font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; }
.panel.error { border-color: var(--danger); color: var(--danger); }

.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }

input, select, textarea {
  width: 100%; padding: 8px; background: var(--surface-2); color: var(--text);
  border: 1px solid var(--border); border-radius: 6px; margin-bottom: 8px;
}
textarea { min-height: 90px; }

table { width: 100%; border-collapse: collapse; font-size: 0.9rem; }
th, td { border-bottom: 1px solid var(--border); padding: 6px; text-align: left; vertical-align: top; }

.list-item {
  border: 1px solid var(--border); border-radius: 6px;
  padding: 10px; margin-bottom: 8px; background: var(--surface-2);
}
.list-button { width: 100%; text-align: left; color: var(--text); cursor: pointer; }

.muted { color: var(--muted); font-size: 0.85rem; }
.bar { background: var(--accent); height: 10px; border-radius: 4px; }
.code {
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 0.8rem; padding: 2px 6px; border: 1px solid var(--border); border-radius: 4px;
}