:root {
  --green: #1a7f5a;
  --green-dark: #146346;
  --red: #c0392b;
  --bg: #f6f5f2;
  --card: #ffffff;
  --text: #1c1c1c;
  --muted: #6b6b6b;
  --border: #e3e1dc;
  --radius: 12px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #161615;
    --card: #232322;
    --text: #ececea;
    --muted: #9a9a96;
    --border: #3a3a38;
    --green: #2aa06f;
    --red: #e06052;
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
  padding-bottom: env(safe-area-inset-bottom);
}

#app { max-width: 560px; margin: 0 auto; padding: 16px; }

.loading { text-align: center; color: var(--muted); margin-top: 40vh; }

h1 { font-size: 1.5rem; margin: 8px 0 4px; }
h2 { font-size: 1.05rem; margin: 20px 0 8px; }

.subtitle { color: var(--muted); margin: 0 0 16px; font-size: 0.9rem; }

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px;
  margin-bottom: 12px;
}

label { display: block; font-size: 0.85rem; color: var(--muted); margin: 12px 0 4px; }
label:first-child { margin-top: 0; }

input[type="text"], input[type="number"], input[type="date"], select, textarea {
  width: 100%;
  padding: 10px 12px;
  font-size: 1rem;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--bg);
  color: var(--text);
  font-family: inherit;
}

button {
  font-family: inherit;
  font-size: 1rem;
  border: none;
  border-radius: 8px;
  padding: 12px 16px;
  cursor: pointer;
}

button.primary {
  background: var(--green);
  color: #fff;
  width: 100%;
  font-weight: 600;
  margin-top: 16px;
}
button.primary:active { background: var(--green-dark); }

button.ghost {
  background: transparent;
  color: var(--green);
  padding: 6px 10px;
  font-size: 0.9rem;
}

button.danger-ghost {
  background: transparent;
  color: var(--muted);
  padding: 4px 8px;
  font-size: 1.1rem;
  line-height: 1;
}

.header-row { display: flex; justify-content: space-between; align-items: center; gap: 8px; }

.tabs {
  display: flex;
  gap: 6px;
  margin: 12px 0;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 4px;
}
.tabs button {
  flex: 1;
  background: transparent;
  color: var(--muted);
  padding: 8px;
  border-radius: 8px;
  font-weight: 600;
}
.tabs button.active { background: var(--green); color: #fff; }

.expense {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 10px;
  padding: 10px 0;
  border-bottom: 1px solid var(--border);
}
.expense:last-child { border-bottom: none; }
.expense .desc { font-weight: 600; }
.expense .meta { color: var(--muted); font-size: 0.8rem; margin-top: 2px; }
.expense .amount { font-weight: 600; white-space: nowrap; }

.balance-row {
  display: flex;
  justify-content: space-between;
  padding: 8px 0;
  border-bottom: 1px solid var(--border);
}
.balance-row:last-child { border-bottom: none; }
.pos { color: var(--green); font-weight: 600; }
.neg { color: var(--red); font-weight: 600; }
.zero { color: var(--muted); }

.settlement {
  padding: 10px 0;
  border-bottom: 1px solid var(--border);
}
.settlement:last-child { border-bottom: none; }
.settlement .amount { font-weight: 700; }

.chips { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 4px; }
.chips label {
  display: flex;
  align-items: center;
  gap: 6px;
  margin: 0;
  padding: 8px 12px;
  border: 1px solid var(--border);
  border-radius: 999px;
  font-size: 0.9rem;
  color: var(--text);
  background: var(--bg);
  cursor: pointer;
}
.chips label:has(input:checked) { border-color: var(--green); background: color-mix(in srgb, var(--green) 12%, var(--bg)); }
.chips input { accent-color: var(--green); }

.row2 { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }

.empty { color: var(--muted); text-align: center; padding: 24px 0; }

.error-banner {
  background: color-mix(in srgb, var(--red) 12%, var(--bg));
  color: var(--red);
  border-radius: 8px;
  padding: 10px 12px;
  margin-bottom: 12px;
  font-size: 0.9rem;
}

.inline-add { display: flex; gap: 8px; }
.inline-add input { flex: 1; }
.inline-add button { background: var(--green); color: #fff; }

.total-line { color: var(--muted); font-size: 0.9rem; margin: 4px 0 0; }