/* Evidka – sdílený vzhled (web, dashboard, pokladna, dokumentace) */
:root {
  /* Vzhled „účtenka“: papír, inkoust, ostré hrany, čísla strojovým písmem, jedna razítková červená. */
  --bg: #f3efe6;
  --surface: #fbf9f4;
  --surface-2: #e9e3d6;
  --text: #161513;
  --muted: #5f5a50;
  --border: #d6cfbf;
  --rule: #161513;
  --brand: #161513;
  --brand-strong: #000000;
  --brand-ink: #f8f5ee;
  --brand-soft: #e6dfd0;
  --accent: #b3261e;
  --ok: #1f6b3c;
  --ok-soft: #e1ecdc;
  --warn: #8d5600;
  --warn-soft: #f5e6c4;
  --err: #b3261e;
  --err-soft: #f6e0dc;
  --info-soft: #e3e5ea;
  --radius: 4px;
  --radius-sm: 2px;
  --shadow: none;
  --font: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --mono: ui-monospace, "Cascadia Mono", "SFMono-Regular", Consolas, "Liberation Mono", monospace;
  color-scheme: light;
}

/* Tmavý vzhled jen pro aplikace (dashboard, pokladna); web má na <html> data-theme="light". */
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #121110;
    --surface: #1b1a17;
    --surface-2: #252320;
    --text: #ede8dc;
    --muted: #a59f92;
    --border: #34312b;
    --rule: #ede8dc;
    --brand: #ede8dc;
    --brand-strong: #ffffff;
    --brand-ink: #121110;
    --brand-soft: #2a2824;
    --accent: #e0645a;
    --ok: #7cc795;
    --ok-soft: #1c2e22;
    --warn: #e3b15c;
    --warn-soft: #33281a;
    --err: #f08a80;
    --err-soft: #3a1c19;
    --info-soft: #1f2430;
    --shadow: none;
    color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --bg: #121110;
  --surface: #1b1a17;
  --surface-2: #252320;
  --text: #ede8dc;
  --muted: #a59f92;
  --border: #34312b;
  --rule: #ede8dc;
  --brand: #ede8dc;
  --brand-strong: #ffffff;
  --brand-ink: #121110;
  --brand-soft: #2a2824;
  --accent: #e0645a;
  --ok: #7cc795;
  --ok-soft: #1c2e22;
  --warn: #e3b15c;
  --warn-soft: #33281a;
  --err: #f08a80;
  --err-soft: #3a1c19;
  --info-soft: #1f2430;
  --shadow: none;
  color-scheme: dark;
}

* { box-sizing: border-box; }
[hidden] { display: none !important; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 16px/1.55 var(--font);
  -webkit-font-smoothing: antialiased;
}
a { color: var(--brand); text-underline-offset: 2px; }
a:hover { color: var(--brand-strong); }
h1, h2, h3 { line-height: 1.15; letter-spacing: -0.02em; margin: 0 0 0.5em; font-weight: 700; }
p { margin: 0 0 1em; }
code, pre, kbd { font-family: var(--mono); font-size: 0.92em; }
:focus-visible { outline: 3px solid var(--accent); outline-offset: 2px; border-radius: 6px; }
.num { font-variant-numeric: tabular-nums; }
.muted { color: var(--muted); }
.small { font-size: 0.875rem; }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }

/* Logo */
.logo { display: inline-flex; align-items: center; gap: 0.5rem; font-weight: 750; font-size: 1.15rem; color: var(--text); text-decoration: none; letter-spacing: -0.02em; }
.logo-mark { width: 28px; height: 28px; border-radius: var(--radius-sm); background: var(--brand); display: grid; place-items: center; color: var(--brand-ink); }
.logo-mark svg { width: 18px; height: 18px; }

/* Tlačítka */
.btn {
  appearance: none; border: 1px solid var(--border); background: var(--surface); color: var(--text);
  border-radius: var(--radius-sm); padding: 0.6rem 1rem; font: inherit; font-weight: 600; cursor: pointer;
  display: inline-flex; align-items: center; justify-content: center; gap: 0.45rem; text-decoration: none;
  transition: background 0.15s, border-color 0.15s, transform 0.05s;
}
.btn:hover { background: var(--surface-2); color: var(--text); }
.btn:active { transform: translateY(1px); }
.btn:disabled { opacity: 0.5; cursor: not-allowed; }
.btn-primary { background: var(--brand); border-color: var(--brand); color: var(--brand-ink); }
.btn-primary:hover { background: var(--brand-strong); border-color: var(--brand-strong); color: var(--brand-ink); }
.btn-ghost { background: transparent; border-color: transparent; }
.btn-danger { color: var(--err); }
.btn-sm { padding: 0.35rem 0.7rem; font-size: 0.875rem; }
.btn-lg { padding: 0.9rem 1.4rem; font-size: 1.05rem; }

/* Formuláře */
label { font-weight: 600; font-size: 0.9rem; display: block; margin-bottom: 0.3rem; }
input, select, textarea {
  font: inherit; color: var(--text); background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--radius-sm); padding: 0.6rem 0.75rem; width: 100%;
}
input:focus, select:focus, textarea:focus { outline: none; border-color: var(--rule); box-shadow: 0 0 0 1px var(--rule); }
.field { margin-bottom: 1rem; }
.hint { font-size: 0.82rem; color: var(--muted); margin-top: 0.3rem; }

/* Karty a odznaky */
.card { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); box-shadow: var(--shadow); padding: 1.25rem; }
.badge { display: inline-flex; align-items: center; gap: 0.3rem; font-size: 0.78rem; font-weight: 650; padding: 0.1rem 0.5rem; border-radius: var(--radius-sm); background: var(--surface-2); color: var(--muted); white-space: nowrap; }
.badge-ok { background: var(--ok-soft); color: var(--ok); }
.badge-warn { background: var(--warn-soft); color: var(--warn); }
.badge-err { background: var(--err-soft); color: var(--err); }
.badge-info { background: var(--info-soft); color: var(--text); }
.badge-brand { background: var(--brand-soft); color: var(--brand-strong); }

.alert { border-radius: var(--radius-sm); padding: 0.75rem 1rem; margin-bottom: 1rem; border: 1px solid transparent; }
.alert-err { background: var(--err-soft); color: var(--err); border-color: color-mix(in srgb, var(--err) 25%, transparent); }
.alert-warn { background: var(--warn-soft); color: var(--warn); border-color: color-mix(in srgb, var(--warn) 25%, transparent); }
.alert-ok { background: var(--ok-soft); color: var(--ok); border-color: color-mix(in srgb, var(--ok) 25%, transparent); }

/* Tabulky */
.table-wrap { overflow-x: auto; border: 1px solid var(--border); border-radius: var(--radius); background: var(--surface); }
table { border-collapse: collapse; width: 100%; font-size: 0.92rem; }
th, td { text-align: left; padding: 0.65rem 0.85rem; border-bottom: 1px solid var(--border); vertical-align: middle; }
th { font-family: var(--mono); font-size: 0.74rem; text-transform: uppercase; letter-spacing: 0.06em; color: var(--muted); font-weight: 650; background: var(--surface-2); }
tr:last-child td { border-bottom: none; }
td.num, th.num { text-align: right; }
tbody tr.clickable { cursor: pointer; }
tbody tr.clickable:hover { background: var(--surface-2); }

/* Toast */
.toast { position: fixed; left: 50%; bottom: 1.25rem; transform: translateX(-50%); background: var(--text); color: var(--bg); padding: 0.7rem 1.1rem; border-radius: var(--radius-sm); font-weight: 600; box-shadow: var(--shadow); z-index: 100; max-width: calc(100% - 2rem); }

@media print {
  .no-print { display: none !important; }
  body { background: #fff; color: #000; }
}