:root {
  --bg: #f4f5f7;
  --surface: #ffffff;
  --surface-2: #f8f9fb;
  --border: #dfe3e8;
  --text: #1d2330;
  --muted: #5d6676;
  --accent: #2557d6;
  --accent-text: #ffffff;
  --accent-soft: #e8eefc;
  --good: #1f7a46;
  --good-soft: #e3f4ea;
  --warn: #8a5a00;
  --warn-soft: #fff3d6;
  --bad: #b42318;
  --bad-soft: #fde8e6;
  --info: #175c8c;
  --info-soft: #e1f0fa;
  --sidebar: #161b26;
  --sidebar-text: #c8cedb;
  --sidebar-active: #2a3243;
  --radius: 8px;
  --shadow: 0 1px 2px rgba(16, 24, 40, .06);
  --mono: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  color-scheme: light;
}

/* Dark palette: explicit choice (data-theme="dark", set by the theme toggle)
   or the system preference unless the user chose light. */
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #0f131a;
    --surface: #171c25;
    --surface-2: #1c2230;
    --border: #2b3343;
    --text: #e4e7ee;
    --muted: #9aa3b5;
    --accent: #6b93ff;
    --accent-text: #0f131a;
    --accent-soft: #1e2a47;
    --good: #5fd08e;
    --good-soft: #15301f;
    --warn: #f0c060;
    --warn-soft: #362a10;
    --bad: #ff8a80;
    --bad-soft: #3a1714;
    --info: #7cc4f5;
    --info-soft: #132a3b;
    --sidebar: #0b0e14;
    --sidebar-active: #1f2633;
    color-scheme: dark;
  }
}

:root[data-theme="dark"] {
  --bg: #0f131a;
  --surface: #171c25;
  --surface-2: #1c2230;
  --border: #2b3343;
  --text: #e4e7ee;
  --muted: #9aa3b5;
  --accent: #6b93ff;
  --accent-text: #0f131a;
  --accent-soft: #1e2a47;
  --good: #5fd08e;
  --good-soft: #15301f;
  --warn: #f0c060;
  --warn-soft: #362a10;
  --bad: #ff8a80;
  --bad-soft: #3a1714;
  --info: #7cc4f5;
  --info-soft: #132a3b;
  --sidebar: #0b0e14;
  --sidebar-active: #1f2633;
  color-scheme: dark;
}

* { box-sizing: border-box; }
html, body { margin: 0; }
body {
  background: var(--bg);
  color: var(--text);
  font: 14px/1.5 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
h1 { font-size: 1.45rem; margin: 0; }
h2 { font-size: 1.1rem; margin: 0 0 .75rem; }
h3 { font-size: .95rem; margin: 0 0 .5rem; }
code, pre, .mono { font-family: var(--mono); font-size: .86em; }
.muted { color: var(--muted); }
.nowrap { white-space: nowrap; }
.right { text-align: right; }
[hidden] { display: none !important; }

/* Layout */
.layout { display: flex; min-height: 100vh; }
.sidebar {
  width: 230px;
  flex-shrink: 0;
  background: var(--sidebar);
  color: var(--sidebar-text);
  padding: 1rem .75rem;
  display: flex;
  flex-direction: column;
  gap: .25rem;
}
.brand { color: #fff; font-weight: 700; font-size: 1.05rem; padding: .25rem .6rem 1rem; }
.brand small { display: block; color: var(--sidebar-text); font-weight: 400; font-size: .75rem; word-break: break-all; }
.sidebar .section { font-size: .7rem; text-transform: uppercase; letter-spacing: .06em; opacity: .6; padding: .9rem .6rem .3rem; }
.sidebar a { color: var(--sidebar-text); padding: .45rem .6rem; border-radius: 6px; display: block; }
.sidebar a:hover { background: var(--sidebar-active); text-decoration: none; color: #fff; }
.sidebar a.active { background: var(--sidebar-active); color: #fff; font-weight: 600; }
.sidebar .spacer { flex: 1; }
.sidebar form { margin: 0; }
.sidebar .link-button { color: var(--sidebar-text); padding: .45rem .6rem; width: 100%; text-align: left; }
.main { flex: 1; min-width: 0; padding: 1.5rem 2rem 3rem; }
.page-head { display: flex; align-items: center; justify-content: space-between; gap: 1rem; flex-wrap: wrap; margin-bottom: 1.25rem; }
.page-head p { margin: .2rem 0 0; color: var(--muted); }

@media (max-width: 860px) {
  .layout { flex-direction: column; }
  .sidebar { width: auto; flex-direction: row; flex-wrap: wrap; align-items: center; }
  .sidebar .section, .sidebar .spacer { display: none; }
  .brand { padding: .25rem .6rem; width: 100%; }
  .main { padding: 1rem; }
}

/* Cards and grids */
.card { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); box-shadow: var(--shadow); padding: 1.1rem 1.2rem; margin-bottom: 1.25rem; }
.card > :last-child { margin-bottom: 0; }
.card-head { display: flex; justify-content: space-between; align-items: center; gap: 1rem; margin-bottom: .75rem; flex-wrap: wrap; }
.card-head h2 { margin: 0; }
.grid { display: grid; gap: 1.25rem; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); }
.grid-2 { display: grid; gap: 1.25rem; grid-template-columns: repeat(auto-fit, minmax(380px, 1fr)); }
.stats { display: grid; gap: 1rem; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); margin-bottom: 1.25rem; }
.stat { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: .9rem 1rem; box-shadow: var(--shadow); }
.stat .label { color: var(--muted); font-size: .8rem; }
.stat .value { font-size: 1.6rem; font-weight: 650; font-variant-numeric: tabular-nums; }
.stat.bad .value { color: var(--bad); }
.stat.warn .value { color: var(--warn); }
.stat.good .value { color: var(--good); }

/* Tables */
.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; }
th, td { text-align: left; padding: .5rem .6rem; border-bottom: 1px solid var(--border); vertical-align: top; }
th { font-size: .78rem; text-transform: uppercase; letter-spacing: .04em; color: var(--muted); font-weight: 600; background: var(--surface-2); }
tbody tr:hover { background: var(--surface-2); }
td.check, th.check { width: 2rem; }
td.truncate { max-width: 340px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
td.num, th.num { text-align: right; font-variant-numeric: tabular-nums; }
.empty { color: var(--muted); text-align: center; padding: 2rem 1rem; }
dl.props { display: grid; grid-template-columns: max-content 1fr; gap: .35rem 1.25rem; margin: 0; }
dl.props dt { color: var(--muted); }
dl.props dd { margin: 0; word-break: break-word; }

/* Badges */
.badge { display: inline-block; padding: .05rem .5rem; border-radius: 999px; font-size: .75rem; font-weight: 600; background: var(--surface-2); color: var(--muted); border: 1px solid var(--border); white-space: nowrap; }
.badge.good { background: var(--good-soft); color: var(--good); border-color: transparent; }
.badge.warn { background: var(--warn-soft); color: var(--warn); border-color: transparent; }
.badge.bad { background: var(--bad-soft); color: var(--bad); border-color: transparent; }
.badge.info { background: var(--info-soft); color: var(--info); border-color: transparent; }
.symbol { display: inline-block; font-family: var(--mono); font-size: .75rem; padding: 0 .35rem; margin: 0 .2rem .2rem 0; border-radius: 4px; background: var(--surface-2); border: 1px solid var(--border); }
.symbol.pos { border-color: var(--bad); color: var(--bad); }
.symbol.neg { border-color: var(--good); color: var(--good); }

/* Forms */
form { margin: 0; }
form.inline { display: inline-block; }
label { display: block; font-weight: 600; margin-bottom: .3rem; }
.field { margin-bottom: 1rem; }
.field .help { color: var(--muted); font-size: .82rem; margin-top: .25rem; }
.field .error { color: var(--bad); font-size: .82rem; margin-top: .25rem; }
.check-field { display: flex; align-items: center; gap: .5rem; margin-bottom: .8rem; }
.check-field label { margin: 0; font-weight: 500; }
input[type=text], input[type=password], input[type=number], input[type=search], input:not([type]), select, textarea {
  width: 100%;
  padding: .5rem .65rem;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--surface);
  color: var(--text);
  font: inherit;
}
input[readonly] { background: var(--surface-2); color: var(--muted); }
textarea { min-height: 7rem; font-family: var(--mono); font-size: .85rem; }
input:focus, select:focus, textarea:focus { outline: 2px solid var(--accent); outline-offset: -1px; border-color: var(--accent); }
.form-row { display: grid; gap: 1rem; grid-template-columns: repeat(auto-fit, minmax(170px, 1fr)); }
.inline-form { display: flex; gap: .5rem; flex-wrap: wrap; align-items: flex-end; }
.inline-form .field { margin: 0; flex: 1 1 160px; }
.filters { display: flex; gap: .5rem; flex-wrap: wrap; align-items: center; margin-bottom: 1rem; }
.filters input, .filters select { width: auto; min-width: 180px; }
.actions { display: flex; gap: .5rem; flex-wrap: wrap; align-items: center; }
fieldset { border: 1px solid var(--border); border-radius: var(--radius); padding: .9rem 1rem .2rem; margin: 0 0 1rem; }
legend { font-weight: 600; padding: 0 .35rem; }

/* Buttons */
.btn, button.btn {
  display: inline-flex; align-items: center; gap: .35rem;
  padding: .48rem .9rem;
  border-radius: 6px;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text);
  font: inherit; font-weight: 600;
  cursor: pointer;
  text-decoration: none;
  white-space: nowrap;
}
.btn:hover { text-decoration: none; background: var(--surface-2); }
.btn.primary { background: var(--accent); border-color: var(--accent); color: var(--accent-text); }
.btn.primary:hover { filter: brightness(1.08); }
.btn.danger { color: var(--bad); border-color: var(--bad); }
.btn.danger:hover { background: var(--bad-soft); }
.btn.small { padding: .2rem .55rem; font-size: .8rem; }
.link-button { background: none; border: 0; padding: 0; font: inherit; color: var(--accent); cursor: pointer; }
.link-button.danger { color: var(--bad); }

/* Alerts */
.flashes { margin-bottom: 1rem; }
.alert { padding: .65rem .9rem; border-radius: 6px; margin-bottom: .5rem; border: 1px solid transparent; }
.alert.success { background: var(--good-soft); color: var(--good); }
.alert.warning { background: var(--warn-soft); color: var(--warn); }
.alert.danger { background: var(--bad-soft); color: var(--bad); }
.alert.info { background: var(--info-soft); color: var(--info); }

/* Misc */
.status-dot { display: inline-block; width: .55rem; height: .55rem; border-radius: 50%; margin-right: .4rem; background: var(--muted); }
.status-dot.good { background: var(--good); }
.status-dot.bad { background: var(--bad); }
.status-dot.warn { background: var(--warn); }
pre.message { background: var(--surface-2); border: 1px solid var(--border); border-radius: 6px; padding: .8rem; white-space: pre-wrap; word-break: break-word; max-height: 32rem; overflow: auto; margin: 0; }
pre.log { white-space: pre-wrap; word-break: break-all; margin: 0; }
.pagination { display: flex; gap: .35rem; align-items: center; justify-content: flex-end; margin-top: 1rem; }
.login-wrap { min-height: 100vh; display: grid; place-items: center; padding: 1rem; }
.login-card { width: 100%; max-width: 380px; }
.login-card h1 { margin-bottom: .25rem; }
.tabs { display: flex; gap: .25rem; border-bottom: 1px solid var(--border); margin-bottom: 1rem; flex-wrap: wrap; }
.tabs a { padding: .45rem .8rem; border-bottom: 2px solid transparent; color: var(--muted); }
.tabs a.active { color: var(--text); border-color: var(--accent); font-weight: 600; }
.bar { height: .5rem; border-radius: 999px; background: var(--surface-2); overflow: hidden; }
.bar span { display: block; height: 100%; background: var(--bad); }

/* Public pages (digest links) */
.main.public { max-width: 1000px; margin: 0 auto; }
.public-head { display: flex; gap: .6rem; align-items: baseline; margin-bottom: 1.25rem; font-size: 1.05rem; }

/* Swagger UI keeps its own light theme */
.swagger-wrap { background: #ffffff; color: #1d2330; color-scheme: light; }

/* Branding */
/* The logo goes above the name in the sidebar, which is too narrow for both
   side by side; beside it in the top bar of small screens */
.brand { display: flex; flex-direction: column; align-items: flex-start; gap: .55rem; }
.brand img { max-height: 40px; max-width: 100%; }
.brand-text { display: flex; flex-direction: column; min-width: 0; }
@media (max-width: 860px) {
  .brand { flex-direction: row; align-items: center; }
  .brand img { max-height: 32px; max-width: 120px; }
}
.login-logo { max-height: 56px; max-width: 220px; margin-bottom: .75rem; }
.public-head img { max-height: 32px; max-width: 140px; align-self: center; }
.brand-footer { color: var(--muted); font-size: .8rem; margin-top: 2rem; text-align: center; }
.logo-preview { max-height: 48px; max-width: 200px; background: var(--surface-2); padding: .25rem;
  border: 1px solid var(--border); border-radius: 6px; }

/* Message view: plain text / HTML switch */
.view-toggle { display: inline-flex; border: 1px solid var(--border); border-radius: 6px; overflow: hidden;
  background: var(--surface); font-size: .85rem; }
.view-toggle a { padding: .25rem .8rem; color: var(--text); }
.view-toggle a + a { border-left: 1px solid var(--border); }
.view-toggle a:hover { text-decoration: none; background: var(--surface-2); }
.view-toggle a.active { background: var(--accent); color: var(--accent-text); font-weight: 600; }
/* e-mail HTML expects a white page */
iframe.message-html { width: 100%; height: 36rem; border: 1px solid var(--border); border-radius: 6px; background: #fff; }

/* Mail log: score breakdown */
td.score-pos { color: var(--bad); font-weight: 600; }
td.score-neg { color: var(--good); font-weight: 600; }

/* Certificates & TLS */
dd.fingerprint { overflow-wrap: anywhere; font-size: .78rem; }
.check-report { border-top: 1px solid var(--border); padding-top: 1rem; margin-top: 1rem; }
.check-report h3 { margin-top: 0; }
table.versions td:not(:first-child), table.versions th:not(:first-child) { text-align: center; }

/* DNS & ports */
.check-summary { display: flex; gap: .4rem; flex-wrap: wrap; margin: 0 0 1rem; }
table.checks td.mono { overflow-wrap: anywhere; min-width: 10rem; }
table.checks .group-row th { background: none; color: var(--text); font-size: .95rem; text-transform: none;
  letter-spacing: 0; padding-top: 1rem; }

/* Theme toggle */
.theme-toggle { margin: 0; }
.sidebar .theme-toggle button { color: var(--sidebar-text); padding: .45rem .6rem; width: 100%; text-align: left; }
.corner-toggle { position: absolute; top: 1rem; right: 1rem; }

/* Live regions (static/app.js): periodic refresh and in-place actions */
.live-status { margin: 0 0 .5rem; font-size: .85rem; }
.live:focus { outline: none; }
.live.is-loading { opacity: .6; transition: opacity .2s; }