:root {
  color-scheme: light;
  --bg: #e6efe8;
  --paper: #f7f6f1;
  --ink: #1a2421;
  --muted: #5d6b66;
  --line: #d3ddd6;
  --accent: #0c5c4c;
  --accent-ink: #f4fbf8;
  --mark: #c4552a;
  --danger: #8d2f2f;
  --ok: #e5f2ea;
  --field: #fff;
  --node: #0c5c4c;
  --node-muted: #b7c4bc;
  --edge: #7d8b84;
  --shadow: 0 1px 0 rgba(26, 36, 33, 0.04);
  font-family: "Avenir Next", "Segoe UI", sans-serif;
  color: var(--ink);
  background: var(--bg);
}

html[data-theme="dark"] {
  color-scheme: dark;
  --bg: #121816;
  --paper: #1c2420;
  --ink: #e7efe9;
  --muted: #a3b2ab;
  --line: #31403a;
  --accent: #3dbea4;
  --accent-ink: #06221c;
  --mark: #e07a52;
  --danger: #f0a3a3;
  --ok: #1a3328;
  --field: #121816;
  --node: #3dbea4;
  --node-muted: #5c6e66;
  --edge: #8aa399;
  --shadow: 0 1px 0 rgba(0, 0, 0, 0.35);
}

@media (prefers-color-scheme: dark) {
  html:not([data-theme="light"]) {
    color-scheme: dark;
    --bg: #121816;
    --paper: #1c2420;
    --ink: #e7efe9;
    --muted: #a3b2ab;
    --line: #31403a;
    --accent: #3dbea4;
    --accent-ink: #06221c;
    --mark: #e07a52;
    --danger: #f0a3a3;
    --ok: #1a3328;
    --field: #121816;
    --node: #3dbea4;
    --node-muted: #5c6e66;
    --edge: #8aa399;
    --shadow: 0 1px 0 rgba(0, 0, 0, 0.35);
  }
}

* { box-sizing: border-box; }
body { margin: 0; min-height: 100vh; }
main { width: min(1080px, calc(100% - 2rem)); margin: 0 auto 4rem; }
h1, h2, .mark { font-family: Georgia, "Iowan Old Style", serif; font-weight: 500; }
h1 { font-size: 2rem; margin: 0; }
h2 { font-size: 1.25rem; margin: 0 0 0.75rem; }
a { color: var(--accent); }
button, .button, .text {
  font: inherit;
  border-radius: 999px;
  padding: 0.45rem 0.9rem;
  text-decoration: none;
}
button, .button {
  background: var(--accent);
  color: var(--accent-ink);
  border: 1px solid var(--accent);
  cursor: pointer;
}
button.ghost, a.text {
  background: transparent;
  color: var(--ink);
  border-color: transparent;
}
button.danger { background: transparent; color: var(--danger); border-color: transparent; }
label, input, select, textarea { font: inherit; }
input, select, textarea {
  width: 100%;
  margin-top: 0.25rem;
  padding: 0.45rem 0.55rem;
  border: 1px solid var(--line);
  border-radius: 0.4rem;
  background: var(--field);
  color: var(--ink);
}
textarea { resize: vertical; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }

.top {
  display: flex;
  align-items: center;
  gap: 1rem;
  width: min(1080px, calc(100% - 2rem));
  margin: 0 auto;
  padding: 1rem 0;
}
.mark { color: var(--ink); text-decoration: none; font-size: 1.6rem; letter-spacing: -0.03em; }
.mark::after { content: ""; display: inline-block; width: 0.45rem; height: 0.45rem; margin-left: 0.35rem; border-radius: 50%; background: var(--mark); vertical-align: 0.15rem; }
.top nav { display: flex; gap: 0.75rem; }
.top nav a { color: var(--muted); text-decoration: none; }
.top nav a[aria-current="page"] { color: var(--ink); }
.top-actions { margin-left: auto; display: flex; align-items: center; gap: 0.35rem; }
.theme-switch { display: flex; gap: 0.15rem; padding: 0.15rem; border: 1px solid var(--line); border-radius: 999px; background: var(--paper); }
.theme-switch button {
  background: transparent;
  color: var(--muted);
  border-color: transparent;
  padding: 0.25rem 0.6rem;
}
.theme-switch button[aria-pressed="true"] { color: var(--ink); background: var(--bg); }
.req { color: var(--mark); margin-left: 0.15rem; }
.toasts { position: fixed; right: 1rem; bottom: 1rem; z-index: 20; display: grid; gap: 0.5rem; }
.toast {
  min-width: 14rem;
  max-width: 22rem;
  padding: 0.75rem 0.9rem;
  background: var(--paper);
  color: var(--ink);
  border: 1px solid var(--line);
  border-left: 4px solid var(--accent);
  border-radius: 0.6rem;
  box-shadow: 0 10px 28px rgba(0, 0, 0, 0.14);
}
.toast.error { border-left-color: var(--danger); }
.inline label.date { display: grid; min-width: 8rem; }

.page-head, .filters, .inline { display: flex; gap: 0.75rem; align-items: end; flex-wrap: wrap; }
.page-head { justify-content: space-between; align-items: start; margin: 0.5rem 0 1rem; }
.filters { margin-bottom: 1rem; }
.filters .grow { flex: 1 1 16rem; }
.muted, .lede { color: var(--muted); }
.sr { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); }

.card, .auth, .table-wrap, .graph, .detail {
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 0.8rem;
  box-shadow: var(--shadow);
}
.card { padding: 1rem; margin: 1rem 0; }
.stack { display: grid; gap: 0.8rem; }
.fields { display: grid; grid-template-columns: 1fr 1fr; gap: 0.8rem 1rem; }
.span-2 { grid-column: 1 / -1; }
fieldset { border: 1px solid var(--line); border-radius: 0.5rem; margin: 0; padding: 0.6rem 0.8rem 0.8rem; }
.checks { display: flex; flex-wrap: wrap; gap: 0.45rem 0.8rem; }
.check { display: flex; gap: 0.35rem; align-items: center; }
.check input { width: auto; margin: 0; }
.banner { background: #f8e8e4; border-radius: 0.5rem; padding: 0.6rem 0.8rem; }
.banner.ok { background: var(--ok); }
.empty { padding: 2rem 0; }

table { width: 100%; border-collapse: collapse; }
th, td { text-align: left; padding: 0.7rem 0.8rem; border-bottom: 1px solid var(--line); }
th { color: var(--muted); font-weight: 500; font-size: 0.85rem; }
.table-wrap { overflow-x: auto; }

.auth { width: min(26rem, 100%); margin: 8vh auto; padding: 1.5rem; }
.mark.alone { margin: 0; }
.log { list-style: none; padding: 0; margin: 0 0 1rem; display: grid; gap: 0.8rem; }
.log li { border-top: 1px solid var(--line); padding-top: 0.8rem; }
.inline textarea, .inline input, .inline select { width: auto; min-width: 8rem; flex: 1; }
.inline.add { align-items: end; }
.conn-title { margin: 0 0 0.4rem; }

.map-layout { display: grid; grid-template-columns: 1fr 16rem; gap: 1rem; min-height: 70vh; }
.graph { min-height: 70vh; }
.detail { padding: 1rem; }
.detail h2 { margin-top: 0; }
.detail ul { padding-left: 1.1rem; }

@media (max-width: 800px) {
  .fields, .map-layout { grid-template-columns: 1fr; }
  .span-2 { grid-column: auto; }
  .graph { min-height: 55vh; }
}