:root {
  --paper: #eef1f0;
  --card: #ffffff;
  --ink: #16232b;
  --muted: #64757e;
  --line: #d5dcdb;
  --up: #1c7a52;
  --up-soft: #e3f1ea;
  --down: #bf3a2b;
  --down-soft: #fae7e4;
  --accent: #2d5c74;
  --radius: 6px;
  --shadow: 0 1px 2px rgba(22, 35, 43, .08);
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  font-size: 15px;
  line-height: 1.5;
  font-variant-numeric: tabular-nums;
}

a { color: var(--accent); }

/* ---------- Kopfzeile ---------- */
.topbar {
  background: var(--ink);
  color: #f4f7f6;
  border-bottom: 3px solid var(--accent);
}
.topbar-inner {
  max-width: 1180px;
  margin: 0 auto;
  padding: 14px 20px;
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 6px 24px;
}
.topbar h1 {
  font-size: 17px;
  font-weight: 600;
  letter-spacing: .01em;
  margin: 0;
  flex: 1 1 auto;
}
.topbar nav { display: flex; gap: 18px; }
.topbar nav a {
  color: #9fb4bd;
  text-decoration: none;
  font-size: 14px;
  padding-bottom: 2px;
  border-bottom: 2px solid transparent;
}
.topbar nav a:hover { color: #fff; }
.topbar nav a[aria-current="page"] { color: #fff; border-bottom-color: var(--accent); }

/* ---------- Layout ---------- */
main {
  max-width: 1180px;
  margin: 0 auto;
  padding: 24px 20px 64px;
}
.section-head {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin: 32px 0 12px;
}
.section-head:first-child { margin-top: 0; }
.section-head h2 { font-size: 15px; font-weight: 600; margin: 0; }
.hint { color: var(--muted); font-size: 13px; margin: 0; }

/* ---------- Zeitraumwahl ---------- */
.rangepicker {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 4px;
}
.rangepicker button {
  border: 0;
  background: transparent;
  color: var(--muted);
  font: inherit;
  font-size: 14px;
  padding: 6px 12px;
  border-radius: 4px;
  cursor: pointer;
}
.rangepicker button:hover { background: var(--paper); color: var(--ink); }
.rangepicker button[aria-pressed="true"] { background: var(--ink); color: #fff; }

/* ---------- Statusleiste ---------- */
.status-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 12px;
}
.status {
  background: var(--card);
  border: 1px solid var(--line);
  border-left: 4px solid var(--muted);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 14px 16px;
}
.status.is-up { border-left-color: var(--up); }
.status.is-down { border-left-color: var(--down); }
.status .name {
  font-weight: 600;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.status .value {
  font-size: 30px;
  font-weight: 600;
  line-height: 1.1;
  margin: 8px 0 2px;
}
.status .meta { color: var(--muted); font-size: 13px; }
.status .state {
  display: inline-block;
  font-size: 12px;
  font-weight: 600;
  padding: 1px 8px;
  border-radius: 20px;
  margin-top: 8px;
}
.state-up { background: var(--up-soft); color: var(--up); }
.state-down { background: var(--down-soft); color: var(--down); }
.state-none { background: var(--paper); color: var(--muted); }

/* ---------- Karten und Grafik ---------- */
.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 16px;
}
.chart-wrap { position: relative; height: 320px; }
@media (max-width: 640px) { .chart-wrap { height: 260px; } }

/* ---------- Tabellen ---------- */
.table-scroll { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; font-size: 14px; }
th, td { text-align: left; padding: 10px 12px; border-bottom: 1px solid var(--line); vertical-align: top; }
th { font-weight: 600; color: var(--muted); font-size: 13px; }
tbody tr:last-child td { border-bottom: 0; }
td.num, th.num { text-align: right; }
code {
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 12.5px;
  background: var(--paper);
  padding: 1px 5px;
  border-radius: 3px;
  word-break: break-all;
}

/* ---------- Formulare ---------- */
.form-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 14px 18px;
}
label { display: block; font-size: 13px; font-weight: 600; margin-bottom: 4px; }
input[type="text"], input[type="url"], input[type="number"] {
  width: 100%;
  font: inherit;
  padding: 8px 10px;
  border: 1px solid var(--line);
  border-radius: 4px;
  background: #fff;
  color: var(--ink);
}
input:focus-visible, button:focus-visible, a:focus-visible, select:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}
.checkline { display: flex; align-items: center; gap: 8px; margin-top: 22px; }
.checkline label { margin: 0; font-weight: 400; }
.form-actions { margin-top: 16px; display: flex; flex-wrap: wrap; gap: 10px; align-items: center; }

.btn {
  font: inherit;
  font-size: 14px;
  padding: 8px 16px;
  border-radius: 4px;
  border: 1px solid var(--ink);
  background: var(--ink);
  color: #fff;
  cursor: pointer;
  text-decoration: none;
  display: inline-block;
}
.btn:hover { background: #0f1a20; }
.btn-quiet { background: transparent; color: var(--ink); border-color: var(--line); }
.btn-quiet:hover { background: var(--paper); }
.btn-danger { background: transparent; color: var(--down); border-color: #e6c3bd; }
.btn-danger:hover { background: var(--down-soft); }
.btn-small { padding: 5px 10px; font-size: 13px; }
.row-actions { display: flex; flex-wrap: wrap; gap: 6px; }

/* ---------- Meldungen ---------- */
.notice {
  border-radius: var(--radius);
  padding: 12px 16px;
  margin-bottom: 20px;
  border: 1px solid var(--line);
  background: var(--card);
  border-left: 4px solid var(--accent);
}
.notice.ok { border-left-color: var(--up); }
.notice.bad { border-left-color: var(--down); }

.empty {
  background: var(--card);
  border: 1px dashed var(--line);
  border-radius: var(--radius);
  padding: 32px;
  text-align: center;
  color: var(--muted);
}

.muted { color: var(--muted); }
.nowrap { white-space: nowrap; }

@media (max-width: 640px) {
  main { padding: 18px 14px 48px; }
  .status .value { font-size: 26px; }
}

/* ---------- Erweiterte Optionen ---------- */
textarea {
  width: 100%;
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 13px;
  line-height: 1.45;
  padding: 8px 10px;
  border: 1px solid var(--line);
  border-radius: 4px;
  background: #fff;
  color: var(--ink);
  resize: vertical;
}
.advanced { margin-top: 18px; border-top: 1px solid var(--line); padding-top: 14px; }
.advanced summary {
  cursor: pointer;
  font-size: 13px;
  font-weight: 600;
  color: var(--accent);
  margin-bottom: 14px;
}
.advanced summary:hover { color: var(--ink); }
.advanced .hint { margin: 6px 0 0; }
.badge-extra {
  display: inline-block;
  font-size: 11px;
  padding: 1px 6px;
  border-radius: 3px;
  background: var(--paper);
  color: var(--muted);
  border: 1px solid var(--line);
  margin-left: 4px;
}