:root {
  --bg: #f6f7f9;
  --panel: #ffffff;
  --text: #1d2330;
  --muted: #667085;
  --line: #d9dde5;
  --accent: #2f5fb3;
  --proposed: #fff1b8;
  --confirmed: #d3f2d9;
  --noevent: #e7e8ec;
  --uncovered: #ffd6d6;
  --danger: #b42318;
  --hl: #8fb3f5;
}

* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--text); font: 15px/1.45 system-ui, -apple-system, "Segoe UI", sans-serif; }
main { padding: 16px; max-width: 1500px; margin: 0 auto; }
h1 { font-size: 1.35rem; margin: 0 0 4px; }
h2 { font-size: 1rem; margin: 0 0 8px; }
a { color: var(--accent); }

.topbar { display: flex; flex-wrap: wrap; gap: 8px 16px; align-items: center; justify-content: space-between; padding: 8px 16px; background: #1d2a44; color: #fff; }
.topbar a, .topbar .link { color: #fff; text-decoration: none; }
.topbar nav { display: flex; flex-wrap: wrap; gap: 4px 16px; align-items: center; }
.brand { font-weight: 600; }

.muted { color: var(--muted); }
.small { font-size: 0.85em; }
.nowrap { white-space: nowrap; }
.num { text-align: right; }
.warn { color: var(--danger); }
.inline { display: inline; }
.row { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; margin-top: 8px; }
.stack { display: flex; flex-direction: column; gap: 8px; }

button, .button { display: inline-block; padding: 4px 10px; border: 1px solid var(--line); border-radius: 6px; background: #fff; color: var(--text); font: inherit; cursor: pointer; text-decoration: none; }
button:hover, .button:hover { border-color: var(--accent); }
button.primary { background: var(--accent); border-color: var(--accent); color: #fff; }
button.danger { color: var(--danger); }
button.small, .button.small { padding: 1px 7px; font-size: 0.85em; }
button.link { background: none; border: none; padding: 0; }
input, select, textarea { font: inherit; padding: 4px 6px; border: 1px solid var(--line); border-radius: 6px; max-width: 100%; }
textarea { width: 100%; }

.message { padding: 8px 12px; border-radius: 6px; margin-bottom: 12px; }
.message.error { background: var(--uncovered); color: var(--danger); }
.message.info { background: var(--confirmed); }
.warn-box { background: #fff4e5; }

.cards { display: flex; flex-wrap: wrap; gap: 12px; margin: 12px 0 20px; }
.card { background: var(--panel); border: 1px solid var(--line); border-radius: 8px; padding: 10px 16px; min-width: 130px; }
.card-value { font-size: 1.5rem; font-weight: 600; }
.card-label { color: var(--muted); font-size: 0.85em; }
section { margin-bottom: 20px; }
.search { display: flex; gap: 8px; max-width: 600px; }
.search input { flex: 1; }

table { border-collapse: collapse; width: 100%; background: var(--panel); }
th, td { padding: 5px 8px; border-bottom: 1px solid var(--line); text-align: left; vertical-align: top; }
th { font-size: 0.85em; color: var(--muted); font-weight: 600; }
.list { max-width: 1100px; }

.editor-head { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 12px; margin-bottom: 12px; }
.pager { display: flex; flex-wrap: wrap; gap: 6px; align-items: start; }
.editor-grid { display: grid; grid-template-columns: minmax(0, 1fr) 320px; gap: 16px; }
@media (max-width: 1000px) { .editor-grid { grid-template-columns: minmax(0, 1fr); } }
.panel { background: var(--panel); border: 1px solid var(--line); border-radius: 8px; padding: 12px; margin-bottom: 16px; overflow-x: auto; }
.panel-head { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 8px; align-items: baseline; }
.legend { display: flex; flex-wrap: wrap; gap: 6px; font-size: 0.8em; }
.toolbar { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; margin-top: 10px; }

/* the legacy text, segments coloured by the event status */
.oldtext { white-space: pre-wrap; word-break: break-word; font: 15px/1.9 ui-monospace, Consolas, monospace; padding: 8px; border: 1px solid var(--line); border-radius: 6px; }
.seg { border-radius: 3px; padding: 1px 0; }
.seg-proposed { background: var(--proposed); }
.seg-confirmed { background: var(--confirmed); }
.seg-noevent { background: var(--noevent); color: var(--muted); text-decoration: line-through; }
.seg-uncovered { background: var(--uncovered); text-decoration: underline wavy var(--danger); }
.seg.hl { outline: 2px solid var(--hl); }
.oldtext { cursor: text; }
.split-marker { display: inline-block; width: 2px; height: 1.3em; margin: 0 -1px; vertical-align: text-bottom; background: var(--danger); animation: blink 1s step-end infinite; }
@keyframes blink { 50% { opacity: 0.2; } }
#selection-info { margin-top: 6px; font-family: ui-monospace, Consolas, monospace; }

.events td.actions { white-space: nowrap; }
.events tr.hl td { background: #eaf1ff; }
.events tr.status-2 td { color: var(--muted); }
.events tr.editing td { background: #fafbff; }
.badge { display: inline-block; padding: 0 6px; border-radius: 10px; font-size: 0.8em; white-space: nowrap; }
.badge-0 { background: var(--proposed); }
.badge-1 { background: var(--confirmed); }
.badge-2 { background: var(--noevent); }

.form-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: 8px 12px; margin-top: 6px; }
.form-grid label { display: block; font-size: 0.85em; color: var(--muted); }
.form-grid .field-info, .form-grid .field-source_detail { grid-column: 1 / -1; }
.form-grid input, .form-grid select { width: 100%; }
.form-grid .field-head { display: flex; justify-content: space-between; align-items: end; gap: 6px; }

/* flag switch (sicher | ? | w) in the head of a field */
.flags > div { display: inline-flex; }
.flags > div > div { display: contents; }
.flags label { display: inline-block; padding: 0 6px; border: 1px solid #c8cfdc; margin-left: -1px; cursor: pointer;
               font-size: 0.8em; line-height: 1.5; color: var(--muted); background: #fff; }
.flags > div > div:first-child label { border-radius: 8px 0 0 8px; margin-left: 0; }
.flags > div > div:last-child label { border-radius: 0 8px 8px 0; }
.flags input { position: absolute; opacity: 0; width: 0; height: 0; }
.flags label:has(input:checked) { background: #dbe6fb; color: inherit; font-weight: 600; }
.flags label:has(input:focus-visible) { outline: 2px solid #6b8fd6; }
.error { color: var(--danger); }

.facts { display: grid; grid-template-columns: max-content 1fr; gap: 2px 10px; margin: 0; }
.facts dt { color: var(--muted); }
.facts dd { margin: 0; }
ul.plain { list-style: none; padding: 0; margin: 0; }
ul.plain li { margin-bottom: 6px; }

/* event details */
.details { display: flex; flex-wrap: wrap; gap: 4px 6px; align-items: center; margin-top: 4px; }
.chip { display: inline-flex; align-items: center; gap: 4px; padding: 0 2px 0 8px; border-radius: 10px; background: #e6eefc; font-size: 0.85em; }
.chip-unsure { background: #f3eefc; }
.chip-source { background: #e8f4ea; }
.chip-source.chip-unsure { background: #f1f4e3; }
.chip-type { color: var(--muted); }
.chip-remove { border: none; background: none; padding: 0 4px; color: var(--muted); }
.chip-remove:hover { color: var(--danger); }
button.suggestion { padding: 0 8px; border-style: dashed; border-radius: 10px; font-size: 0.85em; color: var(--accent); }
.add-detail summary { cursor: pointer; font-size: 0.85em; color: var(--accent); }
.add-detail .row { margin-top: 4px; }

/* duplicates */
.filters label { display: flex; flex-direction: column; font-size: 0.85em; color: var(--muted); }
.list.wide { max-width: none; }
.dup-0 { background: var(--proposed); }
.dup-1 { background: var(--confirmed); }
.dup-2 { background: var(--noevent); }
.compare { max-width: 900px; }
.compare td:first-child { width: 120px; }
.cmp-same td, span.cmp-same { background: var(--confirmed); }
.cmp-different td, span.cmp-different { background: #ffe2c2; }
.cmp-one td, span.cmp-one { background: var(--noevent); }
.legend span { padding: 0 6px; border-radius: 3px; }
.side-by-side { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 16px; }
@media (max-width: 1000px) { .side-by-side { grid-template-columns: minmax(0, 1fr); } }
.events.compact td { padding: 3px 6px; font-size: 0.9em; }
.panel.merged { border-color: var(--accent); }
.place-kind { margin-bottom: 4px; }
.place-suggestion { margin-top: 6px; padding: 6px 8px; border-left: 3px solid #c8cfdc; background: #f6f8fc; }
.place-suggestion .notice { color: #8a5a00; }
.similar-places li { margin: 2px 0; }
.similar-places button.link { color: #2a5bd7; margin-left: 6px; cursor: pointer; }

/* search fields of the admin (select2): its colours come from variables of the admin stylesheet, which is not
   loaded here; same frame as the other inputs */
:root {
  --border-color: var(--line);
  --body-bg: #fff;
  --body-fg: var(--text);
  --body-quiet-color: var(--muted);
  --darkened-bg: #f0f2f6;
  --selected-bg: #dbe6fb;
  --primary: var(--accent);
  --primary-fg: #fff;
  --error-fg: var(--danger);
}
.select2-container--admin-autocomplete .select2-selection--single {
  height: auto; min-height: 32px; border: 1px solid var(--line); border-radius: 6px; background: #fff;
}
.select2-container--admin-autocomplete .select2-selection--single .select2-selection__rendered {
  line-height: 30px; padding-left: 6px;
}
.select2-container--admin-autocomplete .select2-selection--single .select2-selection__arrow { height: 30px; }
.select2-container--admin-autocomplete.select2-container--focus .select2-selection,
.select2-container--admin-autocomplete.select2-container--open .select2-selection { border-color: #6b8fd6; }
.select2-container--admin-autocomplete .select2-dropdown { border-color: var(--line); }
.login { max-width: 360px; margin: 40px auto; }
.changes ul.plain { border-top: 1px solid var(--line); padding-top: 4px; margin-top: 4px; }
.changes li.change { margin: 3px 0 3px 8px; }
.changes li.reverted { text-decoration: line-through; opacity: 0.6; }
.changes button.link { color: var(--accent); cursor: pointer; }
.changes a.pending { margin-left: 6px; padding: 0 6px; border-radius: 8px; background: #fff3cd; color: #7a5a00; font-size: 0.85em; text-decoration: none; }
.approval-batch { border-top: 1px solid var(--line); padding: 8px 0; }
.approval-batch .panel-head { margin-bottom: 4px; }
.badge-link { font-weight: 600; }
.move { white-space: nowrap; }
.image-strip { display: flex; flex-wrap: wrap; gap: 12px; }
.image-strip figure { margin: 0; max-width: 220px; }
.image-strip img { max-width: 220px; max-height: 160px; border: 1px solid var(--line); border-radius: 4px; }
.master-form .field { margin-bottom: 6px; }
.master-form input[type=text], .master-form input[type=number] { width: 100%; }
.new-airplane { max-width: 900px; }

/* Werknummernblock from the text of an event */
.chip-block { background: #fdf0dc; padding-right: 8px; }
.block-form { display: grid; grid-template-columns: max-content minmax(0, 28em); gap: 4px 8px; align-items: center; margin-top: 4px; font-size: 0.9em; }
.block-form > label { color: var(--muted); }
.block-form textarea { width: 100%; box-sizing: border-box; }
.inline-check { display: inline-flex; align-items: center; gap: 4px; }

/* panels of the side column: open and close by the heading */
.panel-toggle { cursor: pointer; user-select: none; }
.panel-toggle::before { content: '▾'; display: inline-block; width: 1em; color: var(--muted); }
.panel.closed .panel-toggle::before { content: '▸'; }
.panel.closed > :not(h2):not(.panel-head) { display: none; }
.panel.closed .panel-head > :not(h2) { display: none; }
.panel.closed h2 { margin-bottom: 0; }

/* merging the events of the records of one airplane: possible doubles */
.merge-events tr.maybe-double td { background: #fff7d6; }
.page-head .row { flex-wrap: wrap; gap: 6px; }

/* sortable tables: the headings sort */
table.sortable th[data-sort] { cursor: pointer; user-select: none; white-space: nowrap; }
table.sortable th[data-sort]::after { content: ' ↕'; color: var(--muted); font-size: 0.8em; }
table.sortable th[aria-sort='ascending']::after { content: ' ▲'; color: inherit; }
table.sortable th[aria-sort='descending']::after { content: ' ▼'; color: inherit; }