/* =====================================================================
   Budget — minimalist, near-monochrome, mobile-first.
   ===================================================================== */
:root {
  --bg: #fafafa;
  --surface: #ffffff;
  --ink: #1a1a1a;
  --muted: #6b6b6b;
  --line: #e6e6e6;
  --accent: #1a1a1a;
  --danger: #b00020;
  --chip: #f0f0f0;
  --radius: 10px;
  --gap: 16px;
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

* { box-sizing: border-box; }
html, body { margin: 0; }
body {
  background: var(--bg);
  color: var(--ink);
  line-height: 1.45;
  -webkit-font-smoothing: antialiased;
}

.muted { color: var(--muted); }
.inline { display: inline; margin: 0; }

/* ---------- Header ---------- */
.app-header {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 14px 20px;
  background: var(--surface);
  border-bottom: 1px solid var(--line);
}
.brand { font-weight: 700; font-size: 1.1rem; letter-spacing: -0.01em; }
.header-actions { display: flex; flex-wrap: wrap; align-items: center; gap: 6px; }

/* ---------- Buttons ---------- */
button { font: inherit; cursor: pointer; }
.btn-primary {
  background: var(--accent); color: #fff; border: none;
  padding: 10px 16px; border-radius: var(--radius); font-weight: 600;
}
.btn-primary:hover { opacity: 0.9; }
.btn-ghost {
  background: transparent; color: var(--ink);
  border: 1px solid var(--line); padding: 7px 12px;
  border-radius: var(--radius); text-decoration: none; font-size: 0.9rem;
}
.btn-ghost:hover { background: var(--chip); }
.btn-ghost:disabled { opacity: 0.4; cursor: default; }
.btn-add {
  background: transparent; border: 1px dashed var(--line); color: var(--muted);
  padding: 9px; border-radius: var(--radius); width: 100%; margin-top: 8px;
}
.btn-add:hover { color: var(--ink); border-color: var(--muted); }
.btn-del {
  background: transparent; border: none; color: var(--muted);
  font-size: 1.2rem; line-height: 1; padding: 0 6px;
}
.btn-del:hover { color: var(--danger); }
.del-spacer { width: 18px; display: inline-block; }

/* ---------- Layout ---------- */
.dashboard {
  max-width: 760px; margin: 0 auto; padding: var(--gap);
  display: grid; gap: var(--gap);
}
.dashboard.narrow { max-width: 560px; }

.card {
  background: var(--surface); border: 1px solid var(--line);
  border-radius: var(--radius); padding: 18px 18px 16px;
}
.card-head { display: flex; justify-content: space-between; align-items: baseline; margin-bottom: 10px; }
.card h2 { margin: 0 0 4px; font-size: 1rem; font-weight: 700; }
.card-total { font-variant-numeric: tabular-nums; font-weight: 600; }

/* ---------- Item rows ---------- */
.item-list { display: flex; flex-direction: column; }
.item-row {
  display: flex; align-items: center; gap: 8px;
  padding: 8px 0; border-bottom: 1px solid var(--line);
}
.item-row:last-child { border-bottom: none; }
.item-name { flex: 1; min-width: 0; }
.editable-name { cursor: pointer; border-bottom: 1px dotted var(--line); }
.editable-name:hover { border-bottom-color: var(--muted); }

.chip {
  font-size: 0.72rem; background: var(--chip); color: var(--muted);
  padding: 2px 8px; border-radius: 999px; white-space: nowrap;
}
.chip-mv { background: #efe9dd; }

.amount-input {
  width: 110px; text-align: right; font-variant-numeric: tabular-nums;
  border: 1px solid transparent; border-radius: 8px; padding: 6px 8px;
  background: transparent; color: var(--ink); font: inherit;
}
.amount-input:hover { border-color: var(--line); }
.amount-input:focus { border-color: var(--accent); outline: none; background: #fff; }

/* ---------- Summary ---------- */
.summary-grid {
  display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin-bottom: 16px;
}
.stat { display: flex; flex-direction: column; gap: 2px; }
.stat-label { font-size: 0.78rem; color: var(--muted); }
.stat-val { font-weight: 700; font-variant-numeric: tabular-nums; }

.partner-block { border-top: 1px solid var(--line); padding-top: 12px; margin-top: 12px; }
.partner-block h3 { margin: 0 0 6px; font-size: 0.95rem; }
.partner-lines { display: grid; grid-template-columns: 1fr auto; gap: 2px 12px; margin: 0; }
.partner-lines dt { color: var(--muted); }
.partner-lines dd { margin: 0; text-align: right; font-variant-numeric: tabular-nums; }
.partner-lines .sub { font-size: 0.82rem; color: var(--muted); }

/* ---------- Admin ---------- */
.admin-row {
  display: flex; align-items: center; gap: 10px;
  padding: 8px 0; border-bottom: 1px solid var(--line);
}
.admin-row:last-child { border-bottom: none; }
.name-input, .admin-row select {
  font: inherit; padding: 7px 9px; border: 1px solid var(--line);
  border-radius: 8px; background: #fff; color: var(--ink);
}
.name-input { flex: 1; }
.admin-row select { margin-left: auto; }
.toggle { display: flex; align-items: center; gap: 6px; font-size: 0.85rem; color: var(--muted); }

/* ---------- History ---------- */
.snapshot-grid { display: grid; grid-template-columns: 1fr auto; gap: 2px 12px; margin: 8px 0; }
.snapshot-grid dt { color: var(--muted); }
.snapshot-grid dd { margin: 0; text-align: right; font-variant-numeric: tabular-nums; }
.mini-table { width: 100%; border-collapse: collapse; margin-top: 10px; font-size: 0.9rem; }
.mini-table th, .mini-table td { text-align: left; padding: 6px 8px; border-bottom: 1px solid var(--line); }
.mini-table td + td, .mini-table th + th { text-align: right; font-variant-numeric: tabular-nums; }

/* ---------- Login ---------- */
.login-body { display: grid; place-items: center; min-height: 100vh; }
.login-card {
  background: var(--surface); border: 1px solid var(--line);
  border-radius: var(--radius); padding: 32px; width: min(360px, 92vw);
}
.login-card h1 { margin: 0 0 4px; }
.login-card form { display: grid; gap: 14px; margin-top: 18px; }
.login-card label { display: grid; gap: 5px; font-size: 0.85rem; color: var(--muted); }
.login-card input {
  font: inherit; padding: 10px; border: 1px solid var(--line);
  border-radius: 8px; background: #fff; color: var(--ink);
}
.alert { background: #fdecef; color: var(--danger); padding: 10px 12px; border-radius: 8px; font-size: 0.9rem; }

/* ---------- Toast ---------- */
.toast {
  position: fixed; left: 50%; bottom: 24px; transform: translateX(-50%);
  background: var(--ink); color: #fff; padding: 10px 16px;
  border-radius: var(--radius); font-size: 0.9rem; z-index: 50;
  box-shadow: 0 4px 16px rgba(0,0,0,0.18);
}

/* ---------- Modal ---------- */
dialog#modal {
  border: none; border-radius: var(--radius); padding: 0;
  width: min(360px, 92vw); box-shadow: 0 12px 40px rgba(0,0,0,0.2);
}
dialog#modal::backdrop { background: rgba(0,0,0,0.35); }
#modalForm { padding: 22px; display: grid; gap: 14px; }
#modalForm h3 { margin: 0; font-size: 1.05rem; }
#modalBody input {
  width: 100%; font: inherit; padding: 10px; border: 1px solid var(--line);
  border-radius: 8px; background: #fff;
}
#modalForm menu { display: flex; justify-content: flex-end; gap: 8px; margin: 0; padding: 0; }

@media (max-width: 480px) {
  .summary-grid { grid-template-columns: 1fr; }
  .amount-input { width: 92px; }
}