:root {
  --bg: #f4f5f7;
  --card: #ffffff;
  --text: #1c1f24;
  --muted: #5d6470;
  --border: #d9dde3;
  --accent: #1f5f8b;
  --accent-text: #ffffff;
  --warn-bg: #fff4d6;
  --warn-border: #e0b44a;
  --error-bg: #fde4e4;
  --error-border: #d46a6a;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #15181c;
    --card: #1e2227;
    --text: #e6e8eb;
    --muted: #9aa1ab;
    --border: #353b43;
    --accent: #4b9ad1;
    --accent-text: #0d1114;
    --warn-bg: #3a3118;
    --warn-border: #a7832c;
    --error-bg: #3d1f1f;
    --error-border: #a54b4b;
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 15px/1.45 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}

main, .app-header { max-width: 1100px; margin: 0 auto; padding: 0 16px; }
.app-header { padding-top: 24px; }
h1 { font-size: 1.6rem; margin: 0 0 4px; }
h2 { font-size: 1.15rem; margin: 0 0 12px; }
h3 { font-size: 1rem; margin: 20px 0 8px; }

.notice { color: var(--muted); margin: 0 0 16px; }
.hint { color: var(--muted); font-size: 0.88rem; margin: 4px 0 10px; }

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 16px;
  margin-bottom: 16px;
}
.card-head { display: flex; justify-content: space-between; align-items: center; gap: 12px; flex-wrap: wrap; }
.card-head h2 { margin: 0; }
.actions { display: flex; gap: 8px; flex-wrap: wrap; }

.grid2, .grid3, .grid4 { display: grid; gap: 12px; }
.grid2 { grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); }
.grid3 { grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); }
.grid4 { grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); }

fieldset { border: 1px solid var(--border); border-radius: 6px; padding: 10px; margin: 0; }
legend { font-weight: 600; padding: 0 4px; }

label, .label { display: block; font-size: 0.88rem; color: var(--muted); }
label + label { margin-top: 8px; }
input {
  display: block;
  width: 100%;
  margin-top: 3px;
  padding: 7px 9px;
  font: inherit;
  color: var(--text);
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 5px;
}
input[type="checkbox"] { display: inline-block; width: auto; margin: 0; }
select {
  display: block;
  width: 100%;
  margin-top: 3px;
  padding: 7px 9px;
  font: inherit;
  color: var(--text);
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 5px;
}

.topbar { display: flex; justify-content: space-between; align-items: baseline; gap: 12px; flex-wrap: wrap; }
.userbar { display: flex; gap: 14px; align-items: baseline; font-size: 0.9rem; flex-wrap: wrap; }
.auth { max-width: 420px; margin: 24px auto; }
.auth .actions { margin-top: 14px; }
.order-bar .order-actions { display: flex; gap: 8px; flex-wrap: wrap; align-items: flex-end; }
.save-status { color: var(--muted); font-size: 0.85rem; margin: 10px 0 0; min-height: 1.2em; }
.save-status.error { color: var(--error-border); }
label.check { display: flex; gap: 8px; align-items: center; color: var(--text); margin-top: 22px; }

.picker .label { margin-bottom: 0; }
.picked { display: flex; justify-content: space-between; align-items: flex-start; gap: 8px; font-size: 0.88rem; margin-top: 6px; }
.editor { margin-top: 8px; padding: 10px; border: 1px dashed var(--border); border-radius: 6px; }
.editor .actions { margin-top: 10px; }
.editor-error { color: var(--error-border); font-size: 0.88rem; margin: 8px 0 0; }
.truck-add { display: flex; gap: 8px; flex-wrap: wrap; align-items: center; margin-top: 12px; }
.truck-add select { width: auto; min-width: 260px; flex: 1 1 260px; margin: 0; }
.truck-add h3, .truck-add .editor { flex: 1 1 100%; margin-top: 0; }
.row-actions { display: flex; gap: 10px; }
.muted { color: var(--muted); font-size: 0.82rem; }
td.empty { color: var(--muted); text-align: center; padding: 14px; }
button.link { border: none; background: none; padding: 0; color: var(--accent); text-decoration: underline; font-size: 0.88rem; }
button.danger { color: var(--error-border); border-color: var(--error-border); }

button, .button {
  display: inline-block;
  font: inherit;
  font-size: 0.92rem;
  padding: 7px 14px;
  border-radius: 5px;
  border: 1px solid var(--border);
  background: var(--card);
  color: var(--text);
  cursor: pointer;
}
label.button { margin: 0; color: var(--text); }
[hidden] { display: none !important; }
button:hover, .button:hover { border-color: var(--accent); }
button.primary { background: var(--accent); color: var(--accent-text); border-color: var(--accent); font-weight: 600; }
.form-actions { display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 24px; }

.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; font-size: 0.92rem; }
th, td { text-align: left; padding: 6px 8px; border-bottom: 1px solid var(--border); white-space: nowrap; }
th { color: var(--muted); font-weight: 600; }
td.num, th.num { text-align: right; font-variant-numeric: tabular-nums; }
tr.day-break td { border-top: 2px solid var(--border); }
table.trucks input { margin: 0; min-width: 90px; }
table.trucks td:first-child { text-align: center; }

.weekdays { display: flex; gap: 6px; flex-wrap: wrap; margin-top: 6px; }
.weekdays label, .days label {
  display: inline-flex; align-items: center; gap: 4px;
  margin: 0; color: var(--text); font-size: 0.88rem;
  padding: 4px 8px; border: 1px solid var(--border); border-radius: 5px;
}
.days { display: flex; gap: 6px; flex-wrap: wrap; }
.days label.off { opacity: 0.5; text-decoration: line-through; }

.alert { padding: 10px 12px; border-radius: 6px; margin: 12px 0; border: 1px solid; }
.alert.warn { background: var(--warn-bg); border-color: var(--warn-border); }
.alert.error { background: var(--error-bg); border-color: var(--error-border); }
.alert ul { margin: 0; padding-left: 18px; }

.stats { display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); gap: 10px; margin: 12px 0; }
.stat { border: 1px solid var(--border); border-radius: 6px; padding: 10px; }
.stat .v { font-size: 1.3rem; font-weight: 600; font-variant-numeric: tabular-nums; }
.stat .k { color: var(--muted); font-size: 0.82rem; }

.plan-header { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 10px; font-size: 0.9rem; margin-top: 12px; }
.plan-header .k { color: var(--muted); font-size: 0.8rem; }

/* Rám pro tisk: na obrazovce se chová jako obyčejný blok a nápis je skrytý. */
.print-frame, .print-frame > tbody, .print-frame > tbody > tr, .print-frame > tbody > tr > td {
  display: block; width: auto; padding: 0; border: 0; white-space: normal;
}
.print-frame > thead, .print-frame > tfoot { display: none; }

@media print {
  :root { --bg: #fff; --card: #fff; --text: #000; --muted: #444; --border: #bbb; }
  body { font-size: 11px; }
  .no-print, .app-header { display: none !important; }
  /* Prvky, které do stránky vkládají rozšíření prohlížeče (plovoucí tlačítka),
     se jinak tisknou na každou stránku. */
  body > *:not(main), html > *:not(head):not(body) { display: none !important; }
  .card { border: none; padding: 0; margin: 0; }
  main { padding: 0; max-width: none; }
  @page { margin: 10mm; }

  .print-frame { display: table; width: 100%; border-collapse: collapse; }
  .print-frame > tbody { display: table-row-group; }
  .print-frame > tbody > tr { display: table-row; }
  .print-frame > tbody > tr > td { display: table-cell; }
  .print-frame > thead { display: table-header-group; }
  .print-frame > tfoot { display: table-footer-group; }
  .print-frame > thead td, .print-frame > tfoot td { border: 0; padding: 0; white-space: normal; }
  .print-label { text-align: center; font-weight: 700; font-size: 10px; letter-spacing: 0.03em; }
  .print-frame > thead .print-label { padding-bottom: 7mm; }
  .print-frame > tfoot .print-label { padding-top: 7mm; }

  /* Souhrnné tabulky pod sebou na plnou šířku, bez posuvníku a ořezu. */
  .grid2 { grid-template-columns: 1fr; gap: 0; }
  .table-wrap { overflow: visible; }
  #trips tr, #byDay tr, #byTruck tr { break-inside: avoid; }
}