:root {
  color-scheme: light;
  --bg: #f7f8fa;
  --ink: #1b2430;
  --muted: #667085;
  --line: #d8dee8;
  --panel: #ffffff;
  --accent: #0f766e;
  --danger: #b42318;
}
* { box-sizing: border-box; }
body { margin: 0; font: 14px/1.45 system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif; background: var(--bg); color: var(--ink); }
nav { height: 56px; display: flex; gap: 24px; align-items: center; padding: 0 28px; border-bottom: 1px solid var(--line); background: var(--panel); position: sticky; top: 0; z-index: 1; }
nav a { color: var(--ink); text-decoration: none; }
main { max-width: 1180px; margin: 0 auto; padding: 28px; }
h1, h2 { margin: 0 0 16px; letter-spacing: 0; }
h1 { font-size: 28px; }
h2 { font-size: 18px; }
.login { min-height: 100vh; display: grid; place-items: center; }
.login-box { width: min(420px, calc(100vw - 32px)); background: var(--panel); border: 1px solid var(--line); border-radius: 8px; padding: 28px; }
.panel { background: var(--panel); border: 1px solid var(--line); border-radius: 8px; padding: 20px; margin: 0 0 24px; }
.metrics { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 14px; margin-bottom: 28px; }
.metrics div { background: var(--panel); border: 1px solid var(--line); border-radius: 8px; padding: 18px; }
.metrics span { display: block; color: var(--muted); }
.metrics strong { font-size: 30px; }
.toolbar { display: flex; justify-content: space-between; align-items: center; gap: 16px; margin-bottom: 18px; }
.grid-form { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 14px; align-items: end; }
label { display: grid; gap: 6px; color: var(--muted); }
.check { display: flex; gap: 8px; align-items: center; color: var(--ink); }
input, select { width: 100%; min-height: 38px; border: 1px solid var(--line); border-radius: 6px; padding: 8px 10px; background: white; color: var(--ink); }
fieldset { border: 1px solid var(--line); border-radius: 6px; padding: 10px; }
button, .button { display: inline-flex; align-items: center; justify-content: center; min-height: 34px; border: 0; border-radius: 6px; padding: 8px 12px; background: var(--accent); color: white; text-decoration: none; cursor: pointer; }
.button.secondary { background: var(--muted); }
button.danger { background: var(--danger); }
table { width: 100%; border-collapse: collapse; background: var(--panel); border: 1px solid var(--line); }
th, td { text-align: left; vertical-align: top; border-bottom: 1px solid var(--line); padding: 10px; }
th { color: var(--muted); font-weight: 600; background: #eef2f6; }
small { color: var(--muted); }
pre { overflow: auto; background: #101828; color: #f2f4f7; border-radius: 8px; padding: 16px; }
code { background: #eef2f6; border-radius: 4px; padding: 2px 5px; }
.actions { display: flex; flex-wrap: wrap; gap: 6px; }
.flash { margin: 0 0 16px; padding: 12px 14px; border-radius: 8px; border: 1px solid var(--line); background: #eef2f6; }
.flash.success { background: #ecfdf3; border-color: #abefc6; color: #067647; }
.flash.error { background: #fef3f2; border-color: #fecdca; color: #b42318; }
.hint { color: var(--muted); margin: 10px 0 0; }
.inline-form { margin-top: 16px; }
@media (max-width: 820px) {
  nav { padding: 0 14px; gap: 12px; overflow-x: auto; }
  main { padding: 18px; }
  .metrics, .grid-form { grid-template-columns: 1fr; }
  table { display: block; overflow-x: auto; }
}