/* Colours chosen for WCAG AA contrast (text >= 4.5:1 on its background). Meaning is never carried by colour alone. */
:root {
  --text: #1b1b1b;
  --muted: #4a4a4a;
  --bg: #ffffff;
  --panel: #f5f6f7;
  --border: #6f6f6f;
  --primary: #0b4f8a;
  --primary-hover: #083b66;
  --focus: #b35c00;
  --error: #a4161a;
  --error-bg: #fbeaea;
  --success: #1e5e2f;
  --success-bg: #e8f3eb;
  --warn-bg: #fff4d6;
  --info-bg: #e5eef8;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: "Segoe UI", system-ui, -apple-system, Arial, sans-serif;
  font-size: 1rem;
  line-height: 1.5;
  color: var(--text);
  background: var(--bg);
}

a { color: var(--primary); }
a:hover { color: var(--primary-hover); }

/* Visible keyboard focus everywhere (WCAG 2.4.7). */
:focus-visible, a:focus, button:focus, input:focus, select:focus, textarea:focus, summary:focus, [tabindex="-1"]:focus {
  outline: 3px solid var(--focus);
  outline-offset: 2px;
}

.skip-link {
  position: absolute;
  left: -999px;
  top: 0;
  background: var(--primary);
  color: #fff;
  padding: .5rem 1rem;
  z-index: 10;
}
.skip-link:focus { left: .5rem; top: .5rem; color: #fff; }

.visually-hidden {
  position: absolute !important;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0, 0, 0, 0);
  white-space: nowrap; border: 0;
}

.site-header {
  display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 1rem;
  padding: .75rem 1.5rem;
  background: #0b2e4f; color: #fff;
}
.site-header a { color: #fff; }
.brand-name { font-weight: 700; font-size: 1.15rem; display: block; }
.brand-note { font-size: .875rem; }
.nav-list { list-style: none; display: flex; gap: 1.25rem; margin: 0; padding: 0; }
.user-box { display: flex; align-items: center; gap: .75rem; flex-wrap: wrap; }
.user-box form { margin: 0; }

main { padding: 1rem 1.5rem 2rem; max-width: 1400px; margin: 0 auto; }
main:focus { outline: none; }
.site-footer { padding: 1rem 1.5rem; border-top: 1px solid var(--border); color: var(--muted); font-size: .875rem; }

h1 { font-size: 1.75rem; margin: .5rem 0 1rem; }
h2 { font-size: 1.25rem; margin: 0 0 .75rem; }

button, .button-primary, .button-secondary, .button-danger {
  font: inherit; cursor: pointer; border-radius: 4px; padding: .45rem .9rem; display: inline-block; text-decoration: none;
  min-height: 44px;
}
.button-primary { background: var(--primary); color: #fff; border: 2px solid var(--primary); }
.button-primary:hover { background: var(--primary-hover); color: #fff; }
.button-secondary { background: #fff; color: var(--primary); border: 2px solid var(--primary); }
.button-danger { background: var(--error); color: #fff; border: 2px solid var(--error); }
button[disabled] { opacity: .6; cursor: not-allowed; }
.site-header .button-secondary { color: var(--primary); }

.form { display: grid; gap: .75rem; max-width: 46rem; }
.form.narrow { max-width: 24rem; }
.field { display: flex; flex-direction: column; gap: .25rem; }
.field.checkbox { flex-direction: row; align-items: center; gap: .5rem; }
.field.readonly .label { font-weight: 600; }
label, .label { font-weight: 600; }
input, select, textarea {
  font: inherit; color: var(--text); background: #fff;
  border: 2px solid var(--border); border-radius: 4px; padding: .4rem .5rem;
}
input[type="checkbox"] { width: 1.25rem; height: 1.25rem; }
[aria-invalid="true"] { border-color: var(--error); border-width: 3px; }
.hint { color: var(--muted); font-size: .9rem; margin: 0; }
.field-error { color: var(--error); font-weight: 600; margin: 0; }
.actions { display: flex; gap: .75rem; align-items: center; flex-wrap: wrap; }

.alert { border-left: 6px solid; padding: .75rem 1rem; margin: .75rem 0; border-radius: 4px; }
.alert h2 { font-size: 1.1rem; }
.alert ul { margin: .25rem 0 0; }
.alert-error { border-color: var(--error); background: var(--error-bg); }
.alert-success { border-color: var(--success); background: var(--success-bg); }
.alert-conflict { border-color: #8a5a00; background: var(--warn-bg); }

.filters { display: flex; flex-wrap: wrap; gap: .75rem 1rem; align-items: flex-end; padding: 1rem; background: var(--panel); border: 1px solid var(--border); border-radius: 4px; }
.list-summary { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 1rem; margin: 1rem 0 .5rem; }

.table-wrap { overflow-x: auto; }
table.data { border-collapse: collapse; width: 100%; }
table.data caption { text-align: left; font-weight: 600; padding: .25rem 0 .5rem; }
table.data th, table.data td { border: 1px solid #b8b8b8; padding: .4rem .5rem; text-align: left; vertical-align: top; }
table.data thead th { background: var(--panel); }
table.data tbody th { font-weight: 600; }
table.data tbody th a { white-space: nowrap; }
table.compact { width: auto; }
button.sort { background: none; border: none; padding: 0; font-weight: 700; color: var(--primary); text-decoration: underline; min-height: 0; }

.pager { display: flex; gap: 1rem; align-items: center; margin-top: 1rem; }

.badge { display: inline-block; padding: .05rem .5rem; border-radius: 999px; border: 1px solid var(--border); font-size: .9rem; white-space: nowrap; }
.badge-ok { background: var(--success-bg); }
.badge-warn { background: var(--warn-bg); }
.badge-info { background: var(--info-bg); }
.badge-muted { background: #ececec; }
.badge-neutral { background: #fff; }

.case-meta { display: flex; flex-wrap: wrap; gap: .25rem .5rem; align-items: center; }
.detail-grid { display: grid; grid-template-columns: minmax(0, 3fr) minmax(0, 2fr); gap: 1rem; align-items: start; }
@media (max-width: 900px) { .detail-grid { grid-template-columns: 1fr; } }
.panel { border: 1px solid var(--border); border-radius: 4px; padding: 1rem; margin-bottom: 1rem; background: #fff; }
.side .panel { background: var(--panel); }
.facts { display: grid; grid-template-columns: max-content 1fr; gap: .25rem 1rem; margin: 0 0 .5rem; }
.facts dt { font-weight: 600; }
.facts dd { margin: 0; }
.facts.audit { margin-top: 1rem; border-top: 1px solid #b8b8b8; padding-top: .75rem; }
.transition { margin-bottom: .75rem; }
.notes { list-style: none; padding: 0; }
.notes li { border-bottom: 1px solid #d0d0d0; padding: .25rem 0; }
.notes p { margin: 0; }
.inline-delete { display: inline-block; margin-left: .75rem; }
.inline-delete[open] { display: block; margin: .5rem 0 0; }
.inline-delete label { display: block; margin-top: .25rem; }

#blazor-error-ui { display: none; position: fixed; bottom: 0; left: 0; right: 0; padding: .75rem 1rem; background: var(--warn-bg); border-top: 2px solid #8a5a00; z-index: 20; }