:root {
  --bg: #e8eef2;
  --bg-accent: #d5e0e8;
  --surface: #f7fafc;
  --ink: #1a2b36;
  --muted: #5a6f7d;
  --line: #c5d2dc;
  --primary: #0b6e4f;
  --primary-hover: #095c42;
  --danger: #a33b3b;
  --online: #1f8a4c;
  --offline: #b42318;
  --stale: #8a6d1d;
  --shadow: 0 1px 2px rgba(26, 43, 54, 0.08);
  --font: "Source Sans 3", "Segoe UI", system-ui, sans-serif;
  --mono: "IBM Plex Mono", ui-monospace, monospace;
}

@import url("https://fonts.googleapis.com/css2?family=IBM+Plex+Mono:wght@400;500&family=Source+Sans+3:wght@400;600;700&display=swap");

* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: var(--font);
  color: var(--ink);
  background:
    radial-gradient(1200px 500px at 10% -10%, #cfe0ea 0%, transparent 55%),
    linear-gradient(180deg, var(--bg) 0%, var(--bg-accent) 100%);
  min-height: 100vh;
}
a { color: var(--primary); text-decoration: none; }
a:hover { text-decoration: underline; }

.topbar {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  align-items: center;
  justify-content: space-between;
  padding: 0.85rem 1.25rem;
  background: rgba(247, 250, 252, 0.92);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(8px);
  position: sticky;
  top: 0;
  z-index: 20;
}
.brand a {
  font-weight: 700;
  font-size: 1.15rem;
  color: var(--ink);
  text-decoration: none;
  letter-spacing: 0.02em;
}
.topbar nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.85rem;
  align-items: center;
  font-size: 0.95rem;
}
.topbar nav a { color: var(--ink); }
.inline { display: inline; }
.linkish {
  background: none;
  border: none;
  color: var(--primary);
  cursor: pointer;
  font: inherit;
  padding: 0;
}

.container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 1.25rem;
}

.page-head {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 1rem;
}
.page-head h1 { margin: 0; font-size: 1.6rem; }

.actions { display: flex; flex-wrap: wrap; gap: 0.5rem; align-items: center; }

.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  border: 1px solid var(--line);
  background: var(--surface);
  color: var(--ink);
  padding: 0.45rem 0.85rem;
  border-radius: 6px;
  cursor: pointer;
  font: inherit;
  text-decoration: none;
  box-shadow: var(--shadow);
}
.btn:hover { background: #fff; text-decoration: none; }
.btn.primary { background: var(--primary); border-color: var(--primary); color: #fff; }
.btn.primary:hover { background: var(--primary-hover); }
.btn.danger { background: #fff5f5; border-color: #e8b4b4; color: var(--danger); }
.btn-sm { padding: 0.15rem 0.45rem; font-size: 0.85rem; }

.panel {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 1rem 1.1rem;
  margin-bottom: 1rem;
  box-shadow: var(--shadow);
}
.panel h2, .panel h3 { margin-top: 0; }

.flash {
  padding: 0.75rem 1rem;
  border-radius: 8px;
  margin-bottom: 1rem;
  border: 1px solid var(--line);
}
.flash-success { background: #e8f6ee; border-color: #b7dfc6; }
.flash-error { background: #fdecec; border-color: #efc0c0; }

.filters {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 0.75rem;
}
.filters input, .filters select,
label input, label select, label textarea,
.form-grid input, .form-grid select, .form-grid textarea,
.stack input, .stack select, .stack textarea,
.form-inline-row input {
  font: inherit;
  padding: 0.45rem 0.6rem;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: #fff;
  color: var(--ink);
}
label { display: flex; flex-direction: column; gap: 0.3rem; font-size: 0.92rem; }
label.check { flex-direction: row; align-items: center; gap: 0.4rem; }

.form-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 0.85rem;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 1rem;
}
.form-grid .full { grid-column: 1 / -1; }
.stack { display: flex; flex-direction: column; gap: 0.75rem; }
.stack.narrow { max-width: 420px; }
.muted { color: var(--muted); }
.code-block {
  font-family: var(--mono);
  font-size: 0.85rem;
  background: #102028;
  color: #d7e6ef;
  padding: 0.85rem;
  border-radius: 8px;
  overflow: auto;
}

.column-picker {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  background: var(--surface);
  border: 1px dashed var(--line);
  padding: 0.75rem;
  border-radius: 8px;
  margin-bottom: 0.75rem;
}
.column-picker.hidden { display: none; }
.column-picker label { flex-direction: row; align-items: center; gap: 0.35rem; }

.status-dot {
  display: inline-block;
  width: 0.7rem;
  height: 0.7rem;
  border-radius: 50%;
  margin-right: 0.35rem;
  vertical-align: middle;
}
.status-dot.online { background: var(--online); box-shadow: 0 0 0 3px rgba(31,138,76,0.18); }
.status-dot.offline { background: var(--offline); }
.status-dot.stale { background: var(--stale); }

.simple-table { width: 100%; border-collapse: collapse; background: var(--surface); }
.simple-table th, .simple-table td {
  border-bottom: 1px solid var(--line);
  padding: 0.55rem 0.4rem;
  text-align: left;
  vertical-align: middle;
}
.form-inline-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
  align-items: center;
}

.login-body {
  display: grid;
  place-items: center;
  min-height: 100vh;
  background:
    linear-gradient(135deg, rgba(11,110,79,0.12), transparent 40%),
    linear-gradient(180deg, #d9e6ee, #c2d4df);
}
.login-box {
  width: min(400px, 92vw);
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 1.5rem;
  box-shadow: 0 12px 40px rgba(26, 43, 54, 0.12);
}
.login-box h1 { margin: 0 0 0.25rem; }

.topo-wrap {
  display: grid;
  grid-template-columns: 1fr 300px;
  gap: 0.75rem;
  min-height: 70vh;
}
#cy {
  background:
    linear-gradient(0deg, transparent 24px, rgba(197,210,220,0.35) 25px),
    linear-gradient(90deg, transparent 24px, rgba(197,210,220,0.35) 25px),
    #f4f8fa;
  background-size: 25px 25px;
  border: 1px solid var(--line);
  border-radius: 10px;
  min-height: 70vh;
}
.topo-panel {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 0.85rem;
  overflow: auto;
  max-height: 75vh;
}
.link-list { list-style: none; padding: 0; margin: 0; }
.link-list li {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
  align-items: center;
  padding: 0.35rem 0;
  border-bottom: 1px solid var(--line);
  font-size: 0.9rem;
}

@media (max-width: 900px) {
  .topo-wrap { grid-template-columns: 1fr; }
  #cy { min-height: 50vh; }
}

table.dataTable tbody td { vertical-align: middle; }