:root {
  --bg: #f6f4ef; --card: #ffffff; --text: #22252a; --muted: #6b6f76; --line: #e3dfd6;
  --accent: #2f6f5e; --accent-text: #ffffff; --danger: #b3412f; --focus: #2f6f5e55;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #1b1d21; --card: #25282d; --text: #e9e7e2; --muted: #9a9ea6; --line: #363a41;
    --accent: #5fb39b; --accent-text: #0f1a17; --danger: #e07a68; --focus: #5fb39b55;
    color-scheme: dark;
  }
}
* { box-sizing: border-box; }
body {
  margin: 0; background: var(--bg); color: var(--text);
  font: 16px/1.45 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}
main { max-width: 640px; margin: 0 auto; padding: 20px 16px calc(40px + env(safe-area-inset-bottom)); }
h1 { font-size: 1.5rem; margin: 4px 0 14px; letter-spacing: -0.01em; }

.tabs { display: flex; gap: 4px; background: var(--line); padding: 4px; border-radius: 12px; }
.tabs button {
  flex: 1; border: 0; background: transparent; color: var(--muted); font: inherit; font-weight: 600;
  padding: 9px 8px; border-radius: 9px; cursor: pointer;
}
.tabs button[aria-selected="true"] { background: var(--card); color: var(--text); box-shadow: 0 1px 2px #0002; }
.count { font-weight: 400; color: var(--muted); }

#add { margin: 18px 0 14px; background: var(--card); border: 1px solid var(--line); border-radius: 12px; padding: 10px; }
input, textarea {
  width: 100%; font: inherit; color: var(--text); background: transparent;
  border: 1px solid transparent; border-radius: 8px; padding: 8px 10px; resize: vertical;
}
input:focus, textarea:focus { outline: none; border-color: var(--accent); box-shadow: 0 0 0 3px var(--focus); }
textarea { margin-top: 6px; min-height: 3em; }
.add-row { display: flex; justify-content: space-between; align-items: center; margin-top: 6px; gap: 8px; }

button { font: inherit; cursor: pointer; }
.primary { background: var(--accent); color: var(--accent-text); border: 0; border-radius: 9px; padding: 8px 16px; font-weight: 600; }
.secondary { background: transparent; color: var(--text); border: 1px solid var(--line); border-radius: 9px; padding: 7px 14px; }
.link { background: none; border: 0; color: var(--accent); padding: 6px 4px; font-weight: 600; }
.danger { color: var(--danger); }

.items { list-style: none; margin: 0; padding: 0; display: grid; gap: 8px; }
.item {
  display: grid; grid-template-columns: auto 1fr; gap: 12px; align-items: start;
  background: var(--card); border: 1px solid var(--line); border-radius: 12px; padding: 12px;
}
.check {
  width: 26px; height: 26px; margin-top: 1px; border-radius: 50%; border: 2px solid var(--muted);
  background: transparent; display: grid; place-items: center; padding: 0; color: var(--accent-text);
}
.check:hover { border-color: var(--accent); }
.done .check { background: var(--accent); border-color: var(--accent); }
.check svg { width: 14px; height: 14px; visibility: hidden; }
.done .check svg { visibility: visible; }
.body { min-width: 0; cursor: pointer; }
.title { font-weight: 600; overflow-wrap: anywhere; }
.note { color: var(--muted); font-size: 0.93rem; margin-top: 3px; white-space: pre-wrap; overflow-wrap: anywhere; }
.note a { color: var(--accent); }
.done .title { text-decoration: line-through; color: var(--muted); font-weight: 500; }
.meta { color: var(--muted); font-size: 0.8rem; margin-top: 4px; }

.edit { grid-column: 1 / -1; display: grid; gap: 6px; }
.edit input, .edit textarea { border-color: var(--line); }
.edit-row { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; }
.edit-row .spacer { flex: 1; }

.empty { color: var(--muted); text-align: center; padding: 24px 8px; }
details { margin-top: 22px; }
summary { cursor: pointer; color: var(--muted); font-weight: 600; padding: 6px 2px; margin-bottom: 8px; }
.error { color: var(--danger); text-align: center; }

.login-box { margin-top: 24px; background: var(--card); border: 1px solid var(--line); border-radius: 14px; padding: 18px; display: grid; gap: 12px; }
.login-box form { display: grid; gap: 10px; }
.login-box input { border-color: var(--line); }
.big { width: 100%; padding: 13px 16px; font-size: 1.05rem; }
.or { display: flex; align-items: center; gap: 10px; color: var(--muted); margin: 2px 0; font-size: 0.9rem; }
.or::before, .or::after { content: ""; flex: 1; border-top: 1px solid var(--line); }
.offer { margin-top: 18px; background: var(--card); border: 1px solid var(--accent); border-radius: 12px; padding: 12px 14px; }
.offer p { margin: 0 0 4px; }
#settings { margin-top: 36px; }
.pk-list { list-style: none; padding: 0; margin: 0 0 8px; display: grid; gap: 6px; }
.pk-list li { display: flex; justify-content: space-between; align-items: center; gap: 8px; background: var(--card); border: 1px solid var(--line); border-radius: 10px; padding: 8px 12px; font-size: 0.93rem; }
.pk-list .meta { margin: 0; }

.group-input { font-size: 0.93rem; color: var(--muted); }
.group-input:focus { color: var(--text); }
.group-head {
  display: flex; align-items: center; justify-content: space-between; gap: 8px;
  margin: 18px 2px 8px; color: var(--muted); font-size: 0.85rem; font-weight: 700;
  text-transform: uppercase; letter-spacing: 0.05em;
}
.group-head:first-child { margin-top: 4px; }
.group-head button { text-transform: none; letter-spacing: 0; font-size: 0.9rem; }
.group-tag { display: inline-block; font-size: 0.78rem; color: var(--muted); border: 1px solid var(--line); border-radius: 999px; padding: 0 8px; margin-left: 6px; font-weight: 500; vertical-align: 1px; }

#open > .items { margin-bottom: 4px; }

.group-toggle {
  display: inline-flex; align-items: center; gap: 6px; background: none; border: 0; padding: 4px 0;
  color: inherit; font: inherit; text-transform: inherit; letter-spacing: inherit; cursor: pointer;
}
.group-toggle:hover { color: var(--text); }
.chev { display: inline-block; transition: transform 0.15s; font-size: 0.9em; }
.group-head.closed .chev { transform: rotate(-90deg); }
.group-head.closed { margin-bottom: 0; }
.items[hidden] { display: none; }
.group-head .group-toggle { text-transform: uppercase; letter-spacing: 0.05em; font-size: inherit; font-weight: 700; color: var(--muted); }
.group-head .group-toggle:hover { color: var(--text); }
.group-head > * { white-space: nowrap; }
.group-head .group-toggle { min-width: 0; overflow: hidden; text-overflow: ellipsis; }
.group-head .link { flex-shrink: 0; }
.group-head .link[title] { padding-left: 8px; }