:root {
  --bg: #f6f7f9;
  --surface: #ffffff;
  --text: #16181d;
  --dim: #6b7280;
  --line: #e3e6eb;
  --accent: #0f766e;
  --accent-soft: #e6f4f2;
  --s-ok: #15803d;   --s-ok-bg: #e7f6ec;
  --s-info: #2563eb; --s-info-bg: #e8effd;
  --s-warn: #b45309; --s-warn-bg: #fdf1e3;
  --s-err: #b91c1c;  --s-err-bg: #fbe9e9;
  --mono: ui-monospace, "JetBrains Mono", "SF Mono", Menlo, Consolas, monospace;
  --sans: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0e1013;
    --surface: #161a1f;
    --text: #e6e8eb;
    --dim: #8b929c;
    --line: #262b33;
    --accent: #2dd4bf;
    --accent-soft: #12302c;
    --s-ok: #4ade80;   --s-ok-bg: #12291b;
    --s-info: #7aa7ff; --s-info-bg: #16213a;
    --s-warn: #fbbf24; --s-warn-bg: #2e2410;
    --s-err: #f87171;  --s-err-bg: #321717;
  }
}
* { box-sizing: border-box; }
html, body { margin: 0; }
body {
  background: var(--bg);
  color: var(--text);
  font: 16px/1.5 var(--sans);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
.mono { font-family: var(--mono); }
.dim { color: var(--dim); }
.small { font-size: 0.85rem; }

.bar {
  display: flex; align-items: center; justify-content: space-between;
  max-width: 760px; width: 100%; margin: 0 auto; padding: 18px 16px;
}
.brand { font-family: var(--mono); font-weight: 700; color: var(--text); }
.bar nav { display: flex; flex-wrap: wrap; justify-content: flex-end; gap: 4px 18px; }
.bar nav a { color: var(--dim); }
@media (max-width: 480px) { .bar nav { gap: 4px 12px; font-size: 0.92rem; } }
.bar nav a:hover { color: var(--text); }

main { flex: 1; max-width: 760px; width: 100%; margin: 0 auto; padding: 8px 16px 40px; }

.hero { padding: 32px 0 24px; }
.label { margin: 0 0 6px; color: var(--dim); font-size: 0.9rem; }
.ip-row { display: flex; align-items: center; gap: 14px; flex-wrap: wrap; }
.ip { margin: 0; font-size: clamp(1.6rem, 6vw, 2.8rem); font-weight: 700; letter-spacing: -0.02em; word-break: break-all; }
.hero h1 { margin: 0; }
.sub { margin: 8px 0 0; color: var(--dim); overflow-wrap: anywhere; }

.btn {
  font: 0.85rem var(--sans); cursor: pointer;
  background: var(--accent-soft); color: var(--accent);
  border: 1px solid transparent; border-radius: 6px; padding: 6px 12px;
}
.btn:hover { border-color: var(--accent); }

.card {
  background: var(--surface); border: 1px solid var(--line);
  border-radius: 10px; padding: 18px 20px; margin-bottom: 16px;
}
.card h2 { margin: 0 0 10px; font-size: 0.95rem; color: var(--dim); font-weight: 600; }
.grid { display: grid; grid-template-columns: max-content 1fr; gap: 8px 24px; margin: 0; }
.grid dt { color: var(--dim); }
.grid dd { margin: 0; word-break: break-word; }
pre { margin: 0; overflow-x: auto; font-size: 0.9rem; line-height: 1.7; }

.tools { display: grid; grid-template-columns: repeat(auto-fill, minmax(200px, 1fr)); gap: 12px; }
.tool {
  display: flex; flex-direction: column; gap: 4px;
  background: var(--surface); border: 1px solid var(--line);
  border-radius: 10px; padding: 16px; color: var(--text);
}
a.tool:hover { border-color: var(--accent); text-decoration: none; }
.tool span { color: var(--dim); font-size: 0.88rem; }
.tool.soon { opacity: 0.5; }

.req { font-size: clamp(1.3rem, 5vw, 2rem); word-break: break-all; }
.headers dd { font-size: 0.88rem; word-break: break-all; }
.headers dt { font-size: 0.88rem; }
p.warn, dd.warn { color: var(--s-warn); }
p.ok { margin: 0; color: var(--s-ok); }

/* Formulare */
.form { display: flex; gap: 10px; flex-wrap: wrap; align-items: center; }
.form input, .form select {
  font: 0.95rem var(--sans); color: var(--text); background: var(--bg);
  border: 1px solid var(--line); border-radius: 6px; padding: 9px 12px; min-width: 0;
}
.form input.mono { font-family: var(--mono); }
.form input { flex: 1 1 240px; }
.form input.narrow { flex: 0 1 220px; }
.form input:focus, .form select:focus { outline: 2px solid var(--accent); outline-offset: -1px; }
.btn.primary { background: var(--accent); color: var(--surface); padding: 9px 18px; font-size: 0.95rem; }

/* Status */
.status-row { display: flex; align-items: center; justify-content: space-between; gap: 12px; }
.status-row h2 { margin: 0; font-size: 1.05rem; color: var(--text); }
.badge { font-size: 0.78rem; font-weight: 600; padding: 3px 10px; border-radius: 999px; white-space: nowrap; }
.badge.ok    { color: var(--s-ok);   background: var(--s-ok-bg); }
.badge.info  { color: var(--s-info); background: var(--s-info-bg); }
.badge.warn  { color: var(--s-warn); background: var(--s-warn-bg); }
.badge.error { color: var(--s-err);  background: var(--s-err-bg); }
.tag { font-size: 0.72rem; color: var(--dim); border: 1px solid var(--line); border-radius: 4px; padding: 0 5px; }

/* DNS-Tabelle */
table.dns { width: 100%; border-collapse: collapse; margin-top: 12px; font-size: 0.92rem; }
.dns th { text-align: left; color: var(--dim); font-weight: 500; font-size: 0.82rem; padding: 6px 8px; border-bottom: 1px solid var(--line); }
.dns td { padding: 9px 8px; border-bottom: 1px solid var(--line); vertical-align: top; word-break: break-all; }
.dns tr:last-child td { border-bottom: 0; }
.dns .num { text-align: right; white-space: nowrap; }
.dns tr.differs td { background: var(--s-warn-bg); }
.dns tr.differs td:first-child { box-shadow: inset 3px 0 0 var(--s-warn); }

/* Mail-Check */
.summary { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 16px; }
.pill { display: inline-flex; align-items: center; gap: 7px; padding: 6px 12px; border-radius: 999px;
  background: var(--surface); border: 1px solid var(--line); color: var(--text); font-size: 0.88rem; }
.pill:hover { text-decoration: none; border-color: var(--dim); }
.dot { width: 8px; height: 8px; border-radius: 50%; flex: none; background: var(--dim); }
.ok > .dot    { background: var(--s-ok); }
.info > .dot  { background: var(--s-info); }
.warn > .dot  { background: var(--s-warn); }
.error > .dot { background: var(--s-err); }
.check-summary { margin: 6px 0 12px; }
pre.record { background: var(--bg); border: 1px solid var(--line); border-radius: 6px; padding: 10px 12px;
  white-space: pre-wrap; word-break: break-all; font-size: 0.82rem; line-height: 1.5; margin-bottom: 12px; }
.details { list-style: none; margin: 0; padding: 0; display: grid; gap: 6px; }
.details li { display: flex; gap: 10px; align-items: baseline; font-size: 0.92rem; }
.details li .dot { transform: translateY(-1px); }
.mono-ish { white-space: pre-wrap; word-break: break-word; }

/* Speedtest */
.st-hero { text-align: center; padding-top: 40px; }
.st-readout { display: flex; align-items: baseline; justify-content: center; gap: 10px; margin: 6px 0 18px; }
.st-value { font-size: clamp(3rem, 14vw, 5.5rem); font-weight: 700; letter-spacing: -0.03em; line-height: 1; font-variant-numeric: tabular-nums; }
.st-unit { color: var(--dim); font-size: 1.1rem; }
.st-bar { height: 4px; background: var(--line); border-radius: 2px; overflow: hidden; max-width: 420px; margin: 0 auto 24px; }
.st-bar-fill { height: 100%; width: 0; background: var(--accent); transition: width 0.2s linear; }
.st-start { font-size: 1rem; padding: 11px 28px; }
.st-start:disabled { opacity: 0.6; cursor: default; }
.st-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; margin-bottom: 16px; }
.st-card { display: flex; flex-direction: column; gap: 2px; margin: 0; }
.st-card .label { margin: 0; }
.st-num { font-size: 1.7rem; font-weight: 700; font-variant-numeric: tabular-nums; }
.st-note { margin: 14px 0 0; }
@media (max-width: 600px) { .st-grid { grid-template-columns: repeat(2, 1fr); } }

/* SSL-Check */
.ssl-findings { margin-top: 14px; }
.cert .grid dd.fp { word-break: break-all; }
.cert .status-row { margin-bottom: 10px; }
.ssl-versions td:first-child { white-space: nowrap; word-break: normal; }
.sans { display: flex; flex-wrap: wrap; gap: 4px 6px; }
.sans span { background: var(--bg); border: 1px solid var(--line); border-radius: 4px; padding: 0 6px; font-size: 0.85rem; }

/* Port-Check */
a.btn { display: inline-flex; align-items: center; padding: 9px 14px; font-size: 0.95rem; }
a.btn:hover { text-decoration: none; }
.badge.muted { color: var(--dim); background: var(--bg); border: 1px solid var(--line); }
.ports .banner { margin-top: 2px; word-break: break-all; }
.warn-text { color: var(--s-warn); margin-top: 2px; }
.ports-switch { margin: 10px 0 0; }

/* Blacklist */
.bl .reason { margin-top: 2px; word-break: break-all; }


.foot { text-align: center; color: var(--dim); font-size: 0.8rem; padding: 20px 16px; }