:root {
  --bg: #f6f5f2; --card: #fff; --ink: #1d1d1b; --muted: #6b6a66; --line: #e3e1dc;
  --accent: #2f5d3a; --accent-ink: #fff; --warn: #9a5b00; --err: #b3261e; --ok: #2f5d3a;
}
* { box-sizing: border-box; }
[hidden] { display: none !important; }
body { margin: 0; font: 15px/1.45 system-ui, -apple-system, "Segoe UI", sans-serif; background: var(--bg); color: var(--ink); }
button { font: inherit; cursor: pointer; border: 0; border-radius: 6px; padding: .55em 1em; background: var(--accent); color: var(--accent-ink); }
button.ghost { background: transparent; color: var(--ink); border: 1px solid var(--line); }
button:disabled { opacity: .45; cursor: default; }
input, select, textarea { font: inherit; padding: .45em .6em; border: 1px solid var(--line); border-radius: 6px; background: #fff; color: var(--ink); }
.err { color: var(--err); } .muted { color: var(--muted); } .warn { color: var(--warn); }

/* login */
body.login { display: grid; place-items: center; min-height: 100vh; padding: 16px; }
.card { background: var(--card); border: 1px solid var(--line); border-radius: 10px; padding: 24px; }
body.login .card { width: min(360px, 100%); display: grid; gap: 14px; }
body.login label { display: grid; gap: 4px; font-size: 13px; color: var(--muted); }
h1 { margin: 0; font-size: 22px; } h1 span { color: var(--accent); }

/* hlavička */
header { position: sticky; top: 0; z-index: 5; background: var(--card); border-bottom: 1px solid var(--line);
  display: flex; flex-wrap: wrap; gap: 10px 16px; align-items: center; padding: 10px 16px; }
header .grow { flex: 1; }
nav a { color: var(--muted); text-decoration: none; margin-right: 12px; }
nav a.on { color: var(--ink); font-weight: 600; }

/* katalog */
main { display: grid; grid-template-columns: 1fr 340px; gap: 16px; padding: 16px; max-width: 1500px; margin: 0 auto; }
@media (max-width: 900px) { main { grid-template-columns: 1fr; } }
.filters { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 12px; align-items: center; }
.filters input[type=search] { flex: 1 1 220px; }
.grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: 12px; }
.p { background: var(--card); border: 1px solid var(--line); border-radius: 10px; overflow: hidden; display: flex; flex-direction: column; }
.p.off { opacity: .6; }
.p img, .p .noimg { width: 100%; aspect-ratio: 1; object-fit: contain; background: #fff; display: block; }
.p .noimg { display: grid; place-items: center; color: var(--muted); font-size: 13px; background: #faf9f7; }
.p .b { padding: 10px 12px; display: grid; gap: 4px; flex: 1; }
.p .n { font-weight: 600; font-size: 14px; line-height: 1.3; }
.p .code { font-size: 12px; color: var(--muted); }
.p .price { font-size: 18px; font-weight: 700; }
.p .price small { font-size: 12px; font-weight: 400; color: var(--muted); }
.p .web { font-size: 12px; color: var(--muted); }
.p .av { font-size: 13px; }
.p .add { display: flex; gap: 6px; margin-top: 6px; }
.p .add input { width: 80px; }

/* košík */
aside { position: sticky; top: 70px; align-self: start; }
aside .card { padding: 16px; display: grid; gap: 10px; }
.cart-line { display: grid; grid-template-columns: 1fr auto auto; gap: 6px; align-items: center; font-size: 13px; border-bottom: 1px solid var(--line); padding-bottom: 6px; }
.cart-line button { padding: 2px 8px; background: transparent; color: var(--err); }
.total { font-size: 17px; font-weight: 700; }
textarea { width: 100%; min-height: 60px; }

/* tabulky (objednávky, admin) */
table { border-collapse: collapse; width: 100%; background: var(--card); font-size: 13px; }
th, td { border-bottom: 1px solid var(--line); padding: 6px 8px; text-align: left; vertical-align: top; }
th { color: var(--muted); font-weight: 500; }
td.r, th.r { text-align: right; }
.wrap { padding: 16px; max-width: 1500px; margin: 0 auto; display: grid; gap: 16px; overflow-x: auto; }
.badge { display: inline-block; padding: 1px 8px; border-radius: 99px; font-size: 12px; background: #eceae4; }
.badge.nová { background: #fff1d6; } .badge.potvrzená { background: #dfeee2; } .badge.zrušená { background: #f6dcd9; }
.form-row { display: flex; flex-wrap: wrap; gap: 12px; align-items: end; }
.form-row label { display: grid; gap: 2px; font-size: 12px; color: var(--muted); }
input.m.over { border-color: var(--accent); font-weight: 600; }
.explain { display: grid; gap: 10px; font-size: 14px; max-width: 1100px; }
.explain ol { margin: 0; padding-left: 20px; display: grid; gap: 6px; }
.explain .calc { font-variant-numeric: tabular-nums; }
.explain table { font-size: 13px; }
.explain tr.click { cursor: pointer; } .explain tr.click:hover td { background: #f3f1ec; }
button.why { padding: 1px 8px; font-size: 12px; }
tr.why-row > td { background: #faf9f6; padding: 14px; }
.chart svg { width: 100%; max-width: 900px; height: auto; display: block; }
.chart .legend { display: flex; gap: 16px; font-size: 12px; color: var(--muted); margin-bottom: 4px; }
.chart .sw { display: inline-block; width: 14px; height: 2px; vertical-align: middle; margin-right: 6px; }
.p a { color: inherit; text-decoration: none; } .p a:hover .n, .p .n a:hover { text-decoration: underline; }
.p .code a { text-decoration: underline; }