:root {
  --surface-1: #fcfcfb;
  --page-plane: #f9f9f7;
  --text-primary: #0b0b0b;
  --text-secondary: #52514e;
  --text-muted: #898781;
  --gridline: #e1e0d9;
  --baseline: #c3c2b7;
  --border: rgba(11, 11, 11, 0.10);

  --series-1: #2a78d6; /* blue */
  --series-2: #eb6834; /* orange */
  --series-3: #1baf7a; /* aqua */
  --series-4: #eda100; /* yellow */
  --series-5: #e87ba4; /* magenta */
  --series-6: #008300; /* green */
  --series-7: #4a3aa7; /* violet */
  --series-8: #e34948; /* red */

  --status-good: #0ca30c;
  --status-warning: #fab219;
  --status-serious: #ec835a;
  --status-critical: #d03b3b;

  --radius: 10px;
  --radius-sm: 6px;
  --font: system-ui, -apple-system, "Segoe UI", sans-serif;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: var(--font);
  background: var(--page-plane);
  color: var(--text-primary);
  font-size: 15px;
  line-height: 1.5;
}

a { color: var(--series-1); text-decoration: none; }
a:hover { text-decoration: underline; }

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: var(--surface-1);
  border-bottom: 1px solid var(--border);
  padding: 0 20px;
  height: 56px;
}

.topbar .brand {
  display: flex;
  align-items: center;
  gap: 8px;
  font-weight: 700;
  font-size: 16px;
  color: var(--text-primary);
  text-decoration: none;
}

.brand-logo {
  width: 24px;
  height: 24px;
  border-radius: 6px;
  display: block;
}

.topbar nav { display: flex; gap: 4px; align-items: center; }

.topbar nav a {
  color: var(--text-secondary);
  padding: 8px 12px;
  border-radius: var(--radius-sm);
  font-size: 14px;
  font-weight: 500;
}

.topbar nav a:hover { background: var(--page-plane); text-decoration: none; }
.topbar nav a.active { color: var(--text-primary); background: var(--page-plane); }

.link-btn {
  color: var(--text-secondary);
  padding: 8px 12px;
  border-radius: var(--radius-sm);
  font-size: 14px;
  font-weight: 500;
  background: none;
  border: none;
  font-family: inherit;
  cursor: pointer;
}
.link-btn:hover { background: var(--page-plane); }

.avatar {
  width: 30px;
  height: 30px;
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 12px;
  font-weight: 700;
}

.container {
  max-width: 1180px;
  margin: 0 auto;
  padding: 24px 20px 60px;
}

.container.narrow { max-width: 640px; }

h1 { font-size: 22px; margin: 0 0 4px; }
h2 { font-size: 17px; margin: 0 0 12px; }
.subtitle { color: var(--text-secondary); margin: 0 0 20px; font-size: 14px; }

.card {
  background: var(--surface-1);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
}

.card + .card { margin-top: 16px; }

.grid { display: grid; gap: 16px; }
.grid.cols-2 { grid-template-columns: 1fr 1fr; }
.grid.cols-3 { grid-template-columns: repeat(3, 1fr); }
.grid.cols-4 { grid-template-columns: repeat(4, 1fr); }
@media (max-width: 820px) {
  .grid.cols-2, .grid.cols-3, .grid.cols-4 { grid-template-columns: 1fr 1fr; }
}

.stat-tile {
  background: var(--surface-1);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px 18px;
}
.stat-tile .value { font-size: 28px; font-weight: 700; line-height: 1.1; }
.stat-tile .label { color: var(--text-secondary); font-size: 13px; margin-top: 4px; }

.btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  border: 1px solid var(--border);
  background: var(--surface-1);
  color: var(--text-primary);
  padding: 8px 14px;
  border-radius: var(--radius-sm);
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
}
.btn:hover { background: var(--page-plane); text-decoration: none; }
.btn.primary { background: var(--series-1); border-color: var(--series-1); color: #fff; }
.btn.primary:hover { background: #2166b8; }
.btn.small { padding: 5px 10px; font-size: 13px; }

.input {
  width: 100%;
  padding: 9px 11px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  font-family: var(--font);
  font-size: 14px;
  background: var(--surface-1);
  color: var(--text-primary);
}
.input:focus { outline: 2px solid var(--series-1); outline-offset: 1px; }

.field { margin-bottom: 14px; }
.field label { display: block; font-size: 13px; font-weight: 600; margin-bottom: 5px; color: var(--text-secondary); }
.field .errorlist { color: var(--status-critical); font-size: 13px; padding: 0; margin: 4px 0 0; list-style: none; }

table.list { width: 100%; border-collapse: collapse; }
table.list th {
  text-align: left;
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.03em;
  color: var(--text-muted);
  border-bottom: 1px solid var(--gridline);
  padding: 8px 10px;
}
table.list td {
  padding: 10px;
  border-bottom: 1px solid var(--gridline);
  font-size: 14px;
  vertical-align: middle;
}
table.list tr:hover td { background: var(--page-plane); }

.badge {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 3px 9px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 600;
}
.badge::before { content: ""; width: 6px; height: 6px; border-radius: 50%; background: currentColor; }

.badge.status-open { background: rgba(42,120,214,0.12); color: var(--series-1); }
.badge.status-pending { background: rgba(250,178,25,0.16); color: #9a6c00; }
.badge.status-on_hold { background: rgba(236,131,90,0.16); color: #a04a26; }
.badge.status-resolved { background: rgba(12,163,12,0.13); color: var(--status-good); }
.badge.status-closed { background: rgba(137,135,129,0.16); color: var(--text-secondary); }

.badge.priority-low { background: rgba(137,135,129,0.16); color: var(--text-secondary); }
.badge.priority-medium { background: rgba(42,120,214,0.12); color: var(--series-1); }
.badge.priority-high { background: rgba(250,178,25,0.16); color: #9a6c00; }
.badge.priority-urgent { background: rgba(208,59,59,0.14); color: var(--status-critical); }

.filters { display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 16px; align-items: center; }
.filters select, .filters input[type="search"] { padding: 7px 9px; border: 1px solid var(--border); border-radius: var(--radius-sm); font-size: 13px; background: var(--surface-1); }

.tabs { display: flex; gap: 4px; margin-bottom: 16px; border-bottom: 1px solid var(--gridline); }
.tabs a {
  padding: 9px 14px;
  font-size: 14px;
  font-weight: 600;
  color: var(--text-secondary);
  border-bottom: 2px solid transparent;
  margin-bottom: -1px;
}
.tabs a.active { color: var(--series-1); border-bottom-color: var(--series-1); }
.tabs a .count { color: var(--text-muted); font-weight: 500; }

.comment {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 14px 16px;
  margin-bottom: 12px;
}
.comment.internal { background: rgba(250,178,25,0.07); border-color: rgba(250,178,25,0.35); }
.comment .meta { font-size: 12px; color: var(--text-muted); margin-bottom: 6px; display: flex; gap: 8px; align-items: center; }
.comment .body { white-space: pre-wrap; font-size: 14px; }

.messages { list-style: none; padding: 0; margin: 0 0 16px; }
.messages li {
  padding: 10px 14px;
  border-radius: var(--radius-sm);
  font-size: 14px;
  margin-bottom: 8px;
  background: rgba(12,163,12,0.10);
  color: #0a5c0a;
  border: 1px solid rgba(12,163,12,0.25);
}
.messages li.error { background: rgba(208,59,59,0.10); color: #8f2323; border-color: rgba(208,59,59,0.3); }

.legend { display: flex; gap: 14px; flex-wrap: wrap; margin-top: 10px; font-size: 12px; color: var(--text-secondary); }
.legend .item { display: flex; align-items: center; gap: 6px; }
.legend .swatch { width: 10px; height: 10px; border-radius: 3px; display: inline-block; }

.chart-table { margin-top: 10px; }
details.chart-table summary { cursor: pointer; font-size: 12px; color: var(--text-secondary); margin-top: 8px; }

.empty-state { text-align: center; padding: 40px 20px; color: var(--text-secondary); }

.split { display: flex; gap: 24px; align-items: flex-start; }
.split .main { flex: 1; min-width: 0; }
.split .side { width: 280px; flex-shrink: 0; }

.kv { font-size: 13px; }
.kv dt { color: var(--text-muted); margin-top: 10px; }
.kv dd { margin: 2px 0 0; font-weight: 600; }

.auth-wrap { display: flex; min-height: 100vh; align-items: center; justify-content: center; background: var(--page-plane); }
.auth-card { width: 380px; background: var(--surface-1); border: 1px solid var(--border); border-radius: var(--radius); padding: 32px; }
.auth-card h1 { text-align: center; margin-bottom: 20px; }