:root {
  --bg: #f4f6f8;
  --card: #ffffff;
  --text: #1f2933;
  --muted: #616e7c;
  --border: #d9e2ec;
  --accent: #2563eb;
  --accent-text: #ffffff;
  --ok: #15803d;
  --warn: #b45309;
  --err: #b91c1c;
  --drop: #eef4ff;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #111827;
    --card: #1f2937;
    --text: #e5e7eb;
    --muted: #9ca3af;
    --border: #374151;
    --accent: #3b82f6;
    --drop: #1e293b;
    --ok: #4ade80;
    --warn: #fbbf24;
    --err: #f87171;
  }
}
* { box-sizing: border-box; }
[hidden] { display: none !important; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 16px/1.5 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Arial, sans-serif;
}
main { max-width: 760px; margin: 0 auto; padding: 24px 16px 64px; }
main.wide { max-width: 1200px; }
h1 { font-size: 1.6rem; margin: 0 0 12px; }
h2 { font-size: 1.25rem; margin: 0 0 12px; }
a { color: var(--accent); }
.card { background: var(--card); border: 1px solid var(--border); border-radius: 12px; padding: 24px; margin-bottom: 20px; }
.card.center { text-align: center; margin-top: 10vh; }
.card.narrow { max-width: 380px; margin: 10vh auto 0; }
.muted { color: var(--muted); }
.small { font-size: 0.85rem; }
.break { word-break: break-word; overflow-wrap: anywhere; }
.error { color: var(--err); }
.flash { background: var(--drop); border-left: 4px solid var(--accent); padding: 10px 14px; border-radius: 6px; }
.message { margin: 12px 0; padding: 8px 14px; border-left: 4px solid var(--border); white-space: pre-wrap; }

label { display: block; font-weight: 600; margin-bottom: 12px; }
input, textarea, select {
  display: block; width: 100%; margin-top: 4px; padding: 10px 12px; font: inherit;
  color: var(--text); background: var(--bg); border: 1px solid var(--border); border-radius: 8px;
}
textarea { resize: vertical; }
.row { display: flex; gap: 8px; align-items: stretch; }
.row input { margin-top: 0; flex: 1; min-width: 0; }

button, .button {
  display: inline-block; padding: 10px 18px; font: inherit; font-weight: 600; cursor: pointer;
  border: 1px solid var(--accent); border-radius: 8px; background: var(--accent); color: var(--accent-text);
  text-decoration: none; white-space: nowrap;
}
button.secondary, .button.secondary { background: transparent; color: var(--accent); }
button.small, .button.small { padding: 4px 10px; font-size: 0.85rem; font-weight: 500; }
button.danger { background: transparent; border-color: var(--err); color: var(--err); }
button.link { background: none; border: none; color: var(--accent); padding: 0; font-weight: 500; }
button:disabled { opacity: 0.5; cursor: default; }
form.inline { display: inline; }

.topnav { display: flex; gap: 20px; align-items: center; margin-bottom: 16px; flex-wrap: wrap; }
.topnav form { margin-left: auto; }

.grid-form { display: grid; grid-template-columns: 1fr 1fr; gap: 0 16px; }
.grid-form .span2 { grid-column: span 2; }
@media (max-width: 640px) {
  .grid-form { grid-template-columns: 1fr; }
  .grid-form .span2 { grid-column: span 1; }
  .card { padding: 16px; }
}

.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; font-size: 0.95rem; }
th, td { text-align: left; padding: 8px 10px; border-bottom: 1px solid var(--border); vertical-align: top; }
th { color: var(--muted); font-weight: 600; font-size: 0.85rem; }
td.actions { display: flex; flex-wrap: wrap; gap: 6px; align-items: center; min-width: 260px; }
td.actions input[type="datetime-local"] { display: inline-block; width: auto; margin: 0; padding: 3px 6px; font-size: 0.85rem; }

.badge { display: inline-block; padding: 2px 8px; border-radius: 999px; font-size: 0.8rem; font-weight: 600; border: 1px solid currentColor; }
.badge.pending { color: var(--muted); }
.badge.active { color: var(--ok); }
.badge.expired { color: var(--warn); }
.badge.revoked { color: var(--err); }

/* Upload page */
.dropzone {
  border: 2px dashed var(--border); border-radius: 12px; padding: 32px 16px; text-align: center;
  background: var(--drop); transition: border-color 0.15s;
}
.dropzone.over { border-color: var(--accent); }
.drop-title { font-size: 1.15rem; font-weight: 600; margin: 0; }
.buttons { display: flex; gap: 10px; justify-content: center; flex-wrap: wrap; }
.url-form { margin-top: 20px; }
.status { min-height: 1.5em; margin: 16px 0 8px; }
.queue { list-style: none; padding: 0; margin: 0; }
.queue li { padding: 10px 0; border-bottom: 1px solid var(--border); }
.queue .head { display: flex; gap: 8px; align-items: baseline; }
.queue .name { flex: 1; min-width: 0; overflow-wrap: anywhere; }
.queue .meta { color: var(--muted); font-size: 0.85rem; white-space: nowrap; }
.queue .state { font-size: 0.85rem; margin-top: 2px; color: var(--muted); }
@media (max-width: 640px) {
  .queue .head { flex-wrap: wrap; }
  .queue .name { flex-basis: 100%; }
  .queue .meta { flex: 1; }
}
.queue li.done .state { color: var(--ok); }
.queue li.failed .state { color: var(--err); }
.bar { height: 6px; background: var(--border); border-radius: 3px; overflow: hidden; margin-top: 6px; }
.bar > span { display: block; height: 100%; width: 0; background: var(--accent); transition: width 0.2s; }
.queue li.done .bar > span { background: var(--ok); }
.queue li.failed .bar > span { background: var(--err); }
.summary { margin-top: 20px; padding: 16px; border-radius: 8px; background: var(--drop); }
.summary h2 { margin-top: 0; }