/* Family Shopping 2.0 - mobile-first */
:root {
  --bg: #f4f6fb;
  --card: #ffffff;
  --ink: #1c2333;
  --muted: #7a8299;
  --line: #e5e9f2;
  --accent: #2f6df6;
  --accent-soft: #eaf0ff;
  --ok: #1fa971;
  --danger: #e5484d;
  --radius: 14px;
  --shadow: 0 1px 3px rgba(20, 30, 60, .08), 0 4px 16px rgba(20, 30, 60, .06);
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #12151c;
    --card: #1b2029;
    --ink: #e8ecf5;
    --muted: #8b93a7;
    --line: #2a3140;
    --accent: #5b8dff;
    --accent-soft: #23304d;
    --shadow: 0 1px 3px rgba(0, 0, 0, .35);
  }
}

* { box-sizing: border-box; -webkit-tap-highlight-color: transparent; }
html, body { margin: 0; padding: 0; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
    "PingFang SC", "Microsoft YaHei", sans-serif;
  background: var(--bg); color: var(--ink);
  overscroll-behavior-y: none;
}

#app { max-width: 560px; margin: 0 auto; min-height: 100vh; display: flex; flex-direction: column; }
.hidden { display: none !important; }
.spacer { flex: 1; }

/* ---------- top bar ---------- */
.topbar {
  position: sticky; top: 0; z-index: 20;
  display: flex; align-items: center; justify-content: space-between;
  padding: 12px 14px; background: var(--card); box-shadow: var(--shadow);
}
.brand { font-weight: 800; font-size: 17px; }

.icon-btn {
  border: none; background: transparent; font-size: 18px; line-height: 1;
  padding: 6px 8px; cursor: pointer; border-radius: 10px; color: var(--ink);
}
.icon-btn:active { background: var(--accent-soft); }

/* ---------- sync bar ---------- */
.syncbar {
  display: flex; align-items: center; gap: 7px;
  padding: 6px 14px; font-size: 12px; color: var(--muted);
}
.dot { width: 8px; height: 8px; border-radius: 50%; display: inline-block; }
.dot-on { background: var(--ok); box-shadow: 0 0 0 3px rgba(31, 169, 113, .18); }
.dot-off { background: #c2c8d8; }
.presence { font-size: 12px; color: var(--muted); }

/* ---------- store groups ---------- */
.view { flex: 1; padding: 4px 12px 150px; }
.sections { display: flex; flex-direction: column; gap: 14px; }

.store-card { background: var(--card); border-radius: var(--radius); box-shadow: var(--shadow); overflow: hidden; }
.store-head {
  display: flex; align-items: center; gap: 8px;
  padding: 12px 14px; cursor: pointer; user-select: none;
}
.store-emoji { font-size: 18px; }
.store-name { font-weight: 700; font-size: 15px; flex: 1; }
.store-count { font-size: 12px; color: var(--muted); background: var(--bg); border-radius: 999px; padding: 3px 9px; }
.chev { transition: transform .18s ease; color: var(--muted); font-size: 12px; }
.store-card.collapsed .chev { transform: rotate(-90deg); }
.store-body { border-top: 1px solid var(--line); }
.store-card.collapsed .store-body { display: none; }

/* ---------- item row ---------- */
.item {
  display: flex; align-items: center; gap: 10px;
  padding: 11px 14px; border-bottom: 1px solid var(--line);
}
.item:last-child { border-bottom: none; }
.check {
  width: 24px; height: 24px; flex: none; border-radius: 50%;
  border: 2px solid var(--line); background: transparent; cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  font-size: 13px; color: #fff; padding: 0;
}
.item.done .check { background: var(--ok); border-color: var(--ok); }
.item-main { flex: 1; min-width: 0; }
.item-name { font-size: 15px; word-break: break-word; }
.item.done .item-name { text-decoration: line-through; color: var(--muted); }
.item-meta {
  display: flex; gap: 6px; margin-top: 4px; align-items: center;
  overflow-x: auto; scrollbar-width: none; white-space: nowrap;
}
.item-meta::-webkit-scrollbar { display: none; }
.tag {
  flex: none;
  font-size: 11px; color: var(--muted); background: var(--bg);
  border-radius: 999px; padding: 2px 8px; border: 1px solid var(--line);
}
.by { flex: none; font-size: 11px; color: var(--muted); opacity: .8; padding-left: 2px; }
.by-inline { font-size: 12px; color: var(--muted); font-weight: 400; margin-left: 6px; white-space: nowrap; }
.item.done .by-inline { opacity: .7; }
.tag-store { cursor: pointer; }
.tag-store:active { background: var(--accent-soft); }
.item-actions { display: flex; gap: 2px; flex: none; }
.mini {
  border: none; background: transparent; color: var(--muted);
  font-size: 15px; width: 30px; height: 30px; border-radius: 8px; cursor: pointer;
}
.mini:active { background: var(--accent-soft); }
.mini.del:active { color: var(--danger); }

.empty-hint { text-align: center; color: var(--muted); font-size: 14px; padding: 40px 20px; }
.list-foot { display: flex; justify-content: center; padding: 18px 0 0; }

/* ---------- add bar ---------- */
.addbar {
  position: fixed; bottom: 0; left: 0; right: 0; z-index: 30;
  max-width: 560px; margin: 0 auto;
  background: var(--card); border-top: 1px solid var(--line);
  padding: 8px 12px calc(10px + env(safe-area-inset-bottom));
  box-shadow: 0 -2px 14px rgba(20, 30, 60, .06);
}
.quick-row { display: flex; gap: 6px; overflow-x: auto; padding-bottom: 8px; scrollbar-width: none; }
.quick-row::-webkit-scrollbar { display: none; }
.quick-chip {
  flex: none; border: 1px solid var(--line); background: var(--bg); color: var(--ink);
  border-radius: 999px; padding: 6px 12px; font-size: 13px; cursor: pointer; white-space: nowrap;
}
.quick-chip:active { background: var(--accent-soft); border-color: var(--accent); }

#add-form { display: flex; gap: 8px; }
#item-name {
  flex: 1; border: 1px solid var(--line); background: var(--bg); color: var(--ink);
  border-radius: 12px; padding: 12px 14px; font-size: 16px; outline: none;
}
#item-name:focus { border-color: var(--accent); }
.btn-add {
  flex: none; width: 50px; border: none; border-radius: 12px;
  background: var(--accent); color: #fff; font-size: 22px; cursor: pointer;
}
.btn-add:active { opacity: .85; }

/* ---------- settings ---------- */
.overlay {
  position: fixed; inset: 0; z-index: 70;   /* above the toast, so a sheet is never covered */
  background: rgba(12, 18, 32, .45); display: flex; align-items: flex-end; justify-content: center;
}
.sheet {
  width: 100%; max-width: 560px; max-height: 88vh; overflow-y: auto;
  background: var(--card); border-radius: 18px 18px 0 0;
  padding: 16px 16px calc(24px + env(safe-area-inset-bottom));
}
.sheet-head { display: flex; align-items: center; justify-content: space-between; margin-bottom: 6px; }
.sheet-head h3 { margin: 0; font-size: 17px; }
.sheet-sub { margin: 0 0 4px; font-size: 15px; }
.field-label { display: block; font-size: 12px; color: var(--muted); margin: 14px 0 6px; }
.sheet input[type="text"] {
  width: 100%; border: 1px solid var(--line); background: var(--bg); color: var(--ink);
  border-radius: 10px; padding: 10px 12px; font-size: 15px; outline: none;
}
.sheet input[type="text"]:focus { border-color: var(--accent); }
.hint { font-size: 12px; color: var(--muted); margin: 4px 0 10px; }
.mono { font-family: ui-monospace, SFMono-Regular, Menlo, monospace; word-break: break-all; }
.sep { border: none; border-top: 1px solid var(--line); margin: 16px 0; }

.seg { display: flex; gap: 6px; }
.seg-btn {
  flex: 1; border: 1px solid var(--line); background: var(--bg); color: var(--ink);
  border-radius: 10px; padding: 9px; font-size: 14px; cursor: pointer;
}
.seg-btn.active { background: var(--accent); border-color: var(--accent); color: #fff; }

.store-toggles { display: flex; flex-direction: column; gap: 2px; }
.store-toggle { display: flex; align-items: center; gap: 10px; padding: 9px 2px; font-size: 15px; }
.store-toggle input { width: 20px; height: 20px; accent-color: var(--accent); }
.store-toggle .grow { flex: 1; }
.inline-form { display: flex; gap: 8px; margin-top: 10px; }
.btn-mini {
  flex: none; width: 44px; border: none; border-radius: 10px;
  background: var(--accent); color: #fff; font-size: 18px; cursor: pointer;
}
.btn-ghost {
  border: 1px solid var(--line); background: var(--card); color: var(--muted);
  border-radius: 10px; padding: 9px 16px; font-size: 13px; cursor: pointer;
}
.btn-ghost:active { background: var(--accent-soft); }

/* ---------- store picker ---------- */
.picker-list { display: flex; flex-direction: column; margin-top: 4px; }
.picker-row {
  display: flex; align-items: center; gap: 12px; width: 100%;
  padding: 14px 6px; font-size: 16px; text-align: left; cursor: pointer;
  background: none; border: none; border-bottom: 1px solid var(--line);
  color: var(--ink); font-family: inherit;
}
.picker-row:last-child { border-bottom: none; }
.picker-row:active { background: var(--accent-soft); }
.picker-row .emo { font-size: 20px; flex: none; }
.picker-row .nm { flex: 1; }
.picker-row .mark { color: var(--accent); font-weight: 700; flex: none; }
.picker-row.current .nm { font-weight: 700; color: var(--accent); }
.picker-row.off .nm { color: var(--muted); }
.picker-row .off-tag {
  flex: none; font-size: 11px; color: var(--muted);
  border: 1px solid var(--line); border-radius: 999px; padding: 2px 8px;
}

/* ---------- login ---------- */
.login {
  position: fixed; inset: 0; z-index: 50;
  background: var(--bg);
  display: flex; align-items: center; justify-content: center; padding: 24px;
}
.login-card {
  width: 100%; max-width: 340px; background: var(--card);
  border-radius: 18px; box-shadow: var(--shadow); padding: 28px 22px;
  text-align: center;
}
.login-brand { font-size: 40px; line-height: 1; }
.login-card h1 { font-size: 19px; margin: 12px 0 4px; }
.login-card .hint { margin: 0 0 18px; }
#pin {
  width: 100%; border: 1px solid var(--line); background: var(--bg); color: var(--ink);
  border-radius: 12px; padding: 13px 14px; font-size: 22px; text-align: center;
  letter-spacing: 8px; outline: none; margin-bottom: 12px;
}
#pin:focus { border-color: var(--accent); }
.btn-add.wide { width: 100%; height: 46px; font-size: 16px; font-weight: 600; }
.btn-add:disabled, #pin:disabled { opacity: .4; cursor: not-allowed; }
.login-error { color: var(--danger); font-size: 13px; margin: 12px 0 0; }

.setup-box {
  margin-top: 20px; padding-top: 18px; border-top: 1px solid var(--line);
  text-align: left;
}
.setup-box h2 { font-size: 14px; margin: 0 0 8px; color: var(--ink); }
.setup-box p { font-size: 12px; color: var(--muted); margin: 0 0 8px; line-height: 1.55; }
.setup-box code {
  display: block; background: var(--bg); border: 1px solid var(--line);
  border-radius: 8px; padding: 10px 12px; margin-bottom: 8px;
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 12px; color: var(--ink); word-break: break-all; user-select: all;
}

.me-row { display: flex; align-items: center; gap: 10px; }
.me-name { flex: 1; font-size: 16px; font-weight: 600; }

/* ---------- toast ---------- */
.toast {
  position: fixed; left: 50%; transform: translateX(-50%);
  bottom: 140px; z-index: 60;
  background: rgba(24, 32, 50, .93); color: #fff;
  padding: 9px 16px; border-radius: 999px; font-size: 13px;
  pointer-events: none; max-width: 84vw; text-align: center;
}