:root {
  --ink: #111111;
  --paper: #ffffff;
  --subtle: #f4f4f5;
  --accent: #ffd400;
  --rule: #d4d4d8;
  --muted: #52525b;
  --link: #1d4ed8;
  --input-bg: #fafafa;
  --danger: #b91c1c;
  --ok: #15803d;
  --radius: 8px;
  --maxw: 1080px;
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  font-family: Arial, Helvetica, "Segoe UI", sans-serif;
  color: var(--ink);
  background: var(--subtle);
  line-height: 1.5;
}

.wrap { max-width: var(--maxw); margin: 0 auto; padding: 0 16px; }

.skip-link {
  position: absolute;
  left: -999px;
  top: 0;
  background: var(--ink);
  color: #fff;
  padding: 8px 12px;
  z-index: 100;
}
.skip-link:focus { left: 8px; top: 8px; }

/* Header */
.site-header {
  background: var(--ink);
  color: #fff;
  border-bottom: 6px solid var(--accent);
  padding: 24px 0;
}
.site-header h1 { margin: 0 0 4px; font-size: 1.9rem; letter-spacing: 0.5px; }
.site-logo { margin: 0 0 10px; line-height: 0; }
.site-logo img { display: block; width: clamp(210px, 40vw, 300px); height: auto; }
.tagline { margin: 0; color: #e4e4e7; max-width: 60ch; }
code { background: rgba(255,255,255,0.15); padding: 1px 5px; border-radius: 4px; }

/* Toolbar */
.toolbar {
  position: sticky;
  top: 0;
  z-index: 20;
  background: #fff;
  border-bottom: 1px solid var(--rule);
  box-shadow: 0 1px 3px rgba(0,0,0,0.06);
}
.toolbar-inner {
  display: flex;
  gap: 10px;
  align-items: center;
  flex-wrap: wrap;
  padding-top: 10px;
  padding-bottom: 10px;
}
.status { margin: 0 0 0 auto; color: var(--muted); min-height: 1.2em; }
.status.ok { color: var(--ok); }
.status.err { color: var(--danger); }

/* Buttons */
.btn {
  font: inherit;
  cursor: pointer;
  background: #fff;
  color: var(--ink);
  border: 1px solid var(--ink);
  border-radius: var(--radius);
  padding: 8px 14px;
  line-height: 1.2;
}
.btn:hover { background: var(--subtle); }
.btn-primary { background: var(--accent); border-color: var(--ink); font-weight: 700; }
.btn-primary:hover { background: #ffdf33; }
.btn-ghost { border-color: var(--rule); color: var(--muted); }
.btn-sm { padding: 4px 9px; font-size: 0.85rem; }
.btn-lg { padding: 12px 22px; font-size: 1.05rem; }

/* Focus visibility (accessibility) */
:focus-visible {
  outline: 3px solid var(--link);
  outline-offset: 2px;
}

/* Cards / sections */
main { padding: 20px 16px 60px; }
.card {
  background: #fff;
  border: 1px solid var(--rule);
  border-radius: var(--radius);
  padding: 18px;
  margin: 16px 0;
}
.section-title { font-size: 1.25rem; margin: 0 0 12px; }
h3 { margin: 18px 0 8px; font-size: 1.02rem; }
h4 { margin: 16px 0 6px; font-size: 0.95rem; color: var(--muted); text-transform: uppercase; letter-spacing: 0.4px; }
.muted { color: var(--muted); font-weight: 400; font-size: 0.9em; }
.help { color: var(--muted); margin: 0 0 12px; }

fieldset { border: none; margin: 0; padding: 0; }

/* Form layout */
label { display: block; font-size: 0.9rem; color: var(--ink); }
label input, label textarea, textarea, input[type="text"], input[type="email"], input[type="date"] {
  display: block;
  width: 100%;
  margin-top: 4px;
  font: inherit;
  padding: 7px 9px;
  border: 1px solid var(--rule);
  border-radius: 6px;
  background: var(--input-bg);
  color: var(--ink);
}
textarea { resize: vertical; }

.grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; align-items: end; }
.grid.two { grid-template-columns: repeat(2, 1fr); }
.grid .span2 { grid-column: span 2; }
.row { display: flex; gap: 10px; flex-wrap: wrap; align-items: end; margin-top: 10px; }
.row label { flex: 1 1 140px; }

/* Day fieldset */
.day-fieldset {
  border: 1px solid var(--rule);
  border-left: 5px solid var(--accent);
  border-radius: var(--radius);
  padding: 14px;
  margin-bottom: 16px;
}
.day-fieldset legend {
  font-weight: 700;
  padding: 0 6px;
  display: flex;
  gap: 10px;
  align-items: center;
}

/* Lookup widgets */
.lookup { display: flex; gap: 6px; }
.lookup input { margin-top: 4px; }
.lookup-results { list-style: none; margin: 6px 0 0; padding: 0; }
.lookup-results li { margin: 0; }
.lookup-results button {
  width: 100%;
  text-align: left;
  background: var(--subtle);
  border: 1px solid var(--rule);
  border-radius: 6px;
  padding: 6px 9px;
  margin: 3px 0;
  cursor: pointer;
  font: inherit;
}
.lookup-results button:hover { background: #ececee; }

/* Tables */
.table-scroll { overflow-x: auto; }
.grid-table { width: 100%; border-collapse: collapse; min-width: 520px; }
.grid-table th, .grid-table td { padding: 4px; text-align: left; vertical-align: middle; }
.grid-table th {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.4px;
  color: #fff;
  background: var(--ink);
  padding: 6px 8px;
}
.grid-table td input { margin-top: 0; }

/* Departments */
.dept-block { margin-bottom: 16px; }
.dept-head {
  display: flex;
  align-items: center;
  gap: 10px;
  background: #27272a;
  color: #fff;
  padding: 6px 10px;
  border-radius: 6px 6px 0 0;
}
.dept-head h3 { margin: 0; color: #fff; font-size: 0.95rem; }
.dept-head .btn { margin-left: auto; }

/* Roster */
.roster-list { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 10px; }
.roster-chip {
  display: inline-flex;
  gap: 8px;
  align-items: center;
  background: var(--subtle);
  border: 1px solid var(--rule);
  border-radius: 999px;
  padding: 4px 6px 4px 12px;
  font-size: 0.85rem;
}
.roster-chip button { border: none; background: none; cursor: pointer; font-size: 1rem; line-height: 1; padding: 2px 4px; }

.import-results, .details-body { margin-top: 8px; }
.import-cand { display: flex; gap: 8px; align-items: center; padding: 4px 0; border-bottom: 1px solid var(--rule); }
.import-cand label { display: flex; gap: 8px; align-items: center; flex: 1; }

.file-label input[type="file"] { font: inherit; }

.generate-card { text-align: center; }
.validation { margin: 10px 0 0; color: var(--danger); white-space: pre-line; }
.validation.ok { color: var(--ok); }

.site-footer {
  border-top: 1px solid var(--rule);
  padding: 20px 0;
  color: var(--muted);
  font-size: 0.85rem;
}
.site-footer a { color: var(--link); }
.site-footer .version-line { margin-top: 6px; font-size: 0.78rem; opacity: 0.8; }
.site-footer .version-line #app-version { font-variant-numeric: tabular-nums; }

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

@media (max-width: 720px) {
  .grid, .grid.two { grid-template-columns: 1fr; }
  .grid .span2 { grid-column: auto; }
}

@media (prefers-reduced-motion: reduce) {
  * { scroll-behavior: auto !important; }
}