/*
 * Dark, red and black, as the owner asked. The numbers are from ROADMAP.md and were computed
 * against WCAG rather than picked by eye; do not nudge them without recomputing the contrast.
 *
 * Two rules run through everything here:
 *
 *  - red is the colour of danger and urgency (stop, delete, errors) plus a restrained accent in
 *    places that are not interactive. If everything is red, the emergency stop stops standing
 *    out, and that button is the one that must.
 *  - meaning is never carried by colour alone: every status has an icon and a word too.
 */

:root {
  --bg: #121212;          /* not #000: pure black haloes text and kills surface depth */
  --card: #1c1c1f;
  --raised: #26262b;
  --border: #34343a;      /* 1.5 on --bg, decorative only */
  --text: #ececee;        /* 15.9 */
  --muted: #a1a1aa;       /* 7.3 */
  --accent: #ff6b6b;      /* 6.8 — light, because contrast on dark comes from lightness */
  --danger: #b4232a;      /* fill only, under white text: 6.5 on the fill */
  --danger-text: #ffffff;
  --success: #3dd68c;     /* 10.0 */
  --warning: #ffb224;     /* 10.4 */

  --radius: 10px;
  --gap: 16px;
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 16px/1.5 var(--font);
  -webkit-font-smoothing: antialiased;
}

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

.wrap {
  max-width: 900px;
  margin: 0 auto;
  padding: var(--gap);
}

header.top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--gap);
  padding: var(--gap);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  background: var(--bg);
  z-index: 5;
}

header.top .brand {
  font-weight: 600;
  letter-spacing: 0.02em;
  color: var(--accent);
}

nav.tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
  padding: 0 var(--gap) var(--gap);
  border-bottom: 1px solid var(--border);
}

nav.tabs a {
  padding: 8px 12px;
  border-radius: var(--radius);
  color: var(--muted);
  white-space: nowrap;
}

nav.tabs a.active {
  background: var(--raised);
  color: var(--text);
  box-shadow: inset 0 -2px 0 var(--accent);
}

h1 { font-size: 22px; margin: 0 0 var(--gap); }
h2 { font-size: 18px; margin: calc(var(--gap) * 1.5) 0 8px; }

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: var(--gap);
  margin-bottom: var(--gap);
}

.card h3 { margin: 0 0 8px; font-size: 16px; }

.row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
}

.muted { color: var(--muted); font-size: 14px; }
.mono { font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; font-size: 13px; }

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 12px;
}

.stat {
  background: var(--raised);
  border-radius: var(--radius);
  padding: 12px;
}
.stat .value { font-size: 24px; font-weight: 600; }
.stat .label { color: var(--muted); font-size: 13px; }

/* Status is a word plus an icon plus a colour, never a colour alone. */
.badge {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 999px;
  font-size: 13px;
  border: 1px solid var(--border);
  background: var(--raised);
  color: var(--muted);
}
.badge.ok { color: var(--success); border-color: color-mix(in srgb, var(--success) 40%, transparent); }
.badge.warn { color: var(--warning); border-color: color-mix(in srgb, var(--warning) 40%, transparent); }
.badge.bad { color: var(--accent); border-color: color-mix(in srgb, var(--accent) 40%, transparent); }

/* The ordinary main action is a light outline, not a red fill: the fill belongs to danger. */
button, .btn {
  display: inline-block;
  font: inherit;
  padding: 9px 14px;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: var(--raised);
  color: var(--text);
  cursor: pointer;
}
button:hover, .btn:hover { border-color: var(--accent); text-decoration: none; }

.btn.primary { border-color: var(--accent); color: var(--accent); }
.btn.danger, button.danger {
  background: var(--danger);
  border-color: var(--danger);
  color: var(--danger-text);
}
button:disabled, .btn.disabled { opacity: 0.5; cursor: not-allowed; }

form.inline { display: inline; }

label { display: block; margin: 12px 0 4px; color: var(--muted); font-size: 14px; }

input[type="text"], input[type="number"], select, textarea {
  width: 100%;
  padding: 10px 12px;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: var(--bg);
  color: var(--text);
  font: inherit;
}
input:focus, select:focus, textarea:focus { outline: 2px solid var(--accent); outline-offset: 1px; }

.choices { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 6px; }
.choices label {
  margin: 0;
  padding: 8px 12px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--raised);
  color: var(--text);
  cursor: pointer;
}
.choices input { position: absolute; opacity: 0; width: 0; height: 0; }
.choices input:checked + span { color: var(--accent); font-weight: 600; }
.choices label:has(input:checked) { border-color: var(--accent); }

table { width: 100%; border-collapse: collapse; }
th, td { text-align: left; padding: 8px; border-bottom: 1px solid var(--border); font-size: 14px; }
th { color: var(--muted); font-weight: 500; }

.notice {
  border-left: 3px solid var(--accent);
  background: var(--card);
  padding: 12px var(--gap);
  border-radius: var(--radius);
  margin-bottom: var(--gap);
}
.notice.ok { border-left-color: var(--success); }
.notice.warn { border-left-color: var(--warning); }

.pager { display: flex; gap: 8px; align-items: center; margin-top: 12px; }

footer.foot {
  color: var(--muted);
  font-size: 13px;
  padding: var(--gap);
  border-top: 1px solid var(--border);
  margin-top: calc(var(--gap) * 2);
}

@media (max-width: 600px) {
  header.top { flex-direction: column; align-items: flex-start; }
  .row { align-items: flex-start; }
}

/* Drop target for file fields. Styled as a target rather than a box so it reads as one even
   before anything is dragged over it; `upload.js` only toggles `.dropping`. */
.dropzone {
  border: 1px dashed var(--border);
  border-radius: var(--radius);
  padding: 18px;
  text-align: center;
  cursor: pointer;
  transition: border-color 0.15s, background 0.15s;
}
.dropzone.dropping {
  border-color: var(--accent);
  background: var(--raised);
}
.dropzone p {
  margin: 0 0 8px;
}