:root {
  --bg: #ffffff;
  --fg: #1c1c1e;
  --muted: #6b6b70;
  --accent: #16a34a;
  --accent-fg: #ffffff;
  --danger: #dc2626;
  --card: #f6f6f7;
  --line: #e4e4e7;
  --done: #9a9aa0;
}
@media (prefers-color-scheme: dark) {
  :root { --bg: #121214; --fg: #ececee; --muted: #a0a0a6; --accent: #22c55e; --accent-fg: #06260f; --danger: #f87171; --card: #1e1e22; --line: #2c2c31; --done: #6b6b70; }
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body { margin: 0; background: var(--bg); color: var(--fg); font: 16px/1.55 -apple-system, "Segoe UI", Roboto, Arial, sans-serif; }
a { color: var(--accent); }
.top { display: flex; align-items: center; justify-content: space-between; gap: 12px; padding: 12px 16px; border-bottom: 1px solid var(--line); max-width: 1040px; margin: 0 auto; }
.brand { display: flex; align-items: center; gap: 10px; color: var(--fg); text-decoration: none; font-weight: 700; }
.top-right { display: flex; align-items: center; gap: 8px; }
select, input, button { font: inherit; color: var(--fg); }
select, input[type=text], input[type=date], input[type=time] { background: var(--card); border: 1px solid var(--line); border-radius: 10px; padding: 8px 10px; min-width: 0; }
input:focus, select:focus, button:focus-visible { outline: 2px solid var(--accent); outline-offset: 1px; }
button { background: var(--card); border: 1px solid var(--line); border-radius: 10px; padding: 8px 14px; cursor: pointer; }
button.primary, .btn.primary { background: var(--accent); border-color: var(--accent); color: var(--accent-fg); font-weight: 600; }
button.danger { color: var(--danger); }
button.icon { padding: 4px 9px; border-radius: 8px; line-height: 1.2; }
button:disabled { opacity: .5; cursor: default; }
.btn { display: inline-block; padding: 10px 18px; border-radius: 12px; text-decoration: none; font-weight: 600; border: 1px solid var(--line); color: var(--fg); background: var(--card); }
main { max-width: 1040px; margin: 0 auto; padding: 0 16px 32px; }
.muted { color: var(--muted); }
.small { font-size: .875rem; }
.hidden { display: none !important; }

/* úvod */
.hero { text-align: center; padding: 48px 0 24px; }
.hero h1 { margin: 12px 0 4px; font-size: 2.2rem; }
.lead { font-size: 1.25rem; margin: 0 0 16px; }
.hero .actions { display: flex; gap: 10px; justify-content: center; flex-wrap: wrap; margin-top: 16px; }
.grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(210px, 1fr)); gap: 16px; margin: 24px 0; }
.feature, .card { background: var(--card); border: 1px solid var(--line); border-radius: 14px; padding: 18px; }
.feature h3, .card h3 { margin: 0 0 6px; font-size: 1.05rem; }
.feature p, .card p { margin: 0; color: var(--muted); }
.cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 16px; margin: 8px 0 24px; }
.card.accent { border-color: var(--accent); }
.card .store { display: inline-block; margin-top: 12px; padding: 8px 14px; border-radius: 10px; background: var(--accent); color: var(--accent-fg); text-decoration: none; font-weight: 600; }
.steps { counter-reset: s; list-style: none; padding: 0; margin: 0; }
.steps li { counter-increment: s; position: relative; padding: 0 0 12px 40px; }
.steps li::before { content: counter(s); position: absolute; left: 0; top: 0; width: 28px; height: 28px; border-radius: 50%; background: var(--accent); color: var(--accent-fg); display: flex; align-items: center; justify-content: center; font-weight: 700; font-size: .9rem; }
.doc { max-width: 760px; margin: 0 auto; }
.doc h1 { margin-top: 32px; }
.doc h2 { font-size: 1.15rem; margin: 28px 0 6px; }
footer { text-align: center; color: var(--muted); padding: 24px 16px 40px; border-top: 1px solid var(--line); }

/* editor */
.connect { max-width: 520px; margin: 40px auto; }
.connect h1 { font-size: 1.6rem; margin: 0 0 8px; }
.code-row { display: flex; gap: 8px; margin: 16px 0 8px; }
.code-row input { flex: 1; font-size: 1.4rem; letter-spacing: .15em; text-transform: uppercase; text-align: center; }
.error { color: var(--danger); min-height: 1.4em; margin: 4px 0; }
.layout { display: grid; grid-template-columns: 240px 1fr; gap: 20px; margin-top: 20px; align-items: start; }
.sidebar { display: flex; flex-direction: column; gap: 4px; }
.tab { display: flex; justify-content: space-between; align-items: center; gap: 8px; text-align: left; background: transparent; border: 1px solid transparent; padding: 9px 12px; border-radius: 10px; }
.tab.active { background: var(--card); border-color: var(--line); font-weight: 600; }
.tab .count { color: var(--muted); font-size: .85rem; font-weight: 400; }
.sidebar .new { margin-top: 6px; }
.panel { background: var(--card); border: 1px solid var(--line); border-radius: 16px; padding: 18px; min-width: 0; }
.panel-head { display: flex; align-items: flex-start; justify-content: space-between; gap: 10px; flex-wrap: wrap; }
.panel-head h2 { margin: 0; font-size: 1.4rem; cursor: text; word-break: break-word; }
.badge { display: inline-block; font-size: .78rem; color: var(--muted); border: 1px solid var(--line); border-radius: 999px; padding: 1px 9px; margin-top: 4px; }
.menu-row { display: flex; gap: 6px; flex-wrap: wrap; }
.add-row { display: flex; gap: 8px; margin: 16px 0 10px; flex-wrap: wrap; }
.add-row input[type=text] { flex: 1 1 200px; }
.items { list-style: none; margin: 0; padding: 0; }
.item { display: flex; align-items: center; gap: 10px; padding: 8px 4px; border-top: 1px solid var(--line); }
.item:first-child { border-top: 0; }
.item input[type=checkbox] { width: 22px; height: 22px; accent-color: var(--accent); flex: none; margin: 0; }
.item .text { flex: 1; min-width: 0; word-break: break-word; cursor: text; }
.item.done .text { color: var(--done); text-decoration: line-through; }
.item .due { font-size: .82rem; color: var(--muted); white-space: nowrap; }
.item .due.overdue { color: var(--danger); }
.item .tools { display: flex; gap: 2px; flex: none; }
.item .tools button { border: 0; background: transparent; color: var(--muted); }
.item .tools button:hover { color: var(--fg); }
.item input.edit { flex: 1; }
.empty { color: var(--muted); padding: 18px 4px; }
.household { margin-top: 24px; }
.household .row { display: flex; gap: 8px; flex-wrap: wrap; align-items: center; margin-top: 8px; }
.sharecode { font-size: 1.5rem; letter-spacing: .12em; font-weight: 700; }
.toast { position: fixed; left: 50%; bottom: 20px; transform: translateX(-50%); background: var(--fg); color: var(--bg); padding: 10px 16px; border-radius: 12px; font-size: .95rem; max-width: calc(100% - 32px); }
dialog { border: 1px solid var(--line); border-radius: 16px; background: var(--bg); color: var(--fg); padding: 20px; width: min(440px, calc(100% - 32px)); }
dialog::backdrop { background: rgba(0,0,0,.45); }
dialog h3 { margin: 0 0 12px; }
dialog label { display: block; margin: 10px 0 4px; font-size: .9rem; color: var(--muted); }
dialog input, dialog select { width: 100%; }
dialog .buttons { display: flex; justify-content: flex-end; gap: 8px; margin-top: 18px; }
@media (max-width: 720px) {
  .layout { grid-template-columns: 1fr; gap: 12px; }
  .sidebar { flex-direction: row; overflow-x: auto; padding-bottom: 4px; }
  .tab { flex: none; }
  .sidebar .new { margin-top: 0; flex: none; }
  .panel { padding: 14px; }
  .item .tools .move { display: none; }
}