:root {
  --bg: #f4f6f8;
  --panel: #ffffff;
  --text: #1f2937;
  --muted: #6b7280;
  --border: #e5e7eb;
  --receita: #16a34a;
  --despesa: #dc2626;
  --saldo: #2563eb;
  --accent: #2563eb;
  --radius: 12px;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
}

.app {
  max-width: 1000px;
  margin: 0 auto;
  padding: 16px;
}

.topbar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 16px;
}

.topbar h1 {
  font-size: 1.3rem;
  margin: 0;
}

.month-nav {
  display: flex;
  align-items: center;
  gap: 10px;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 4px 8px;
}

.month-nav button {
  border: none;
  background: transparent;
  font-size: 1.2rem;
  cursor: pointer;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  color: var(--accent);
}

.month-nav button:hover { background: var(--bg); }

#monthLabel {
  font-weight: 600;
  min-width: 140px;
  text-align: center;
  text-transform: capitalize;
}

.summary {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  margin-bottom: 16px;
}

.card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 14px;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.card .label { font-size: 0.8rem; color: var(--muted); }
.card .value { font-size: 1.3rem; font-weight: 700; }
.card.receita .value { color: var(--receita); }
.card.despesa .value { color: var(--despesa); }
.card.saldo .value { color: var(--saldo); }

.content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-bottom: 16px;
}

.panel {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px;
}

.panel h2 {
  margin: 0 0 12px;
  font-size: 1rem;
}

form label {
  display: flex;
  flex-direction: column;
  font-size: 0.85rem;
  color: var(--muted);
  gap: 4px;
  margin-bottom: 10px;
}

form label[hidden],
.hint[hidden] {
  display: none;
}

form input {
  font-size: 1rem;
  padding: 8px 10px;
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text);
  background: #fff;
}

.type-toggle {
  display: flex;
  gap: 8px;
  margin-bottom: 12px;
}

.type-btn {
  flex: 1;
  padding: 8px;
  border: 1px solid var(--border);
  background: #fff;
  border-radius: 8px;
  cursor: pointer;
  font-weight: 600;
  color: var(--muted);
}

.type-btn.active[data-type="despesa"] {
  background: #fee2e2;
  border-color: var(--despesa);
  color: var(--despesa);
}

.type-btn.active[data-type="receita"] {
  background: #dcfce7;
  border-color: var(--receita);
  color: var(--receita);
}

.repeat-toggle {
  display: flex;
  gap: 8px;
  margin-bottom: 10px;
}

.repeat-btn {
  flex: 1;
  padding: 7px;
  border: 1px solid var(--border);
  background: #fff;
  border-radius: 8px;
  cursor: pointer;
  font-size: 0.85rem;
  color: var(--muted);
}

.repeat-btn.active {
  background: #eef2ff;
  border-color: var(--accent);
  color: var(--accent);
  font-weight: 600;
}

.hint {
  font-size: 0.78rem;
  color: var(--muted);
  margin: -4px 0 10px;
}

.tx-badge {
  display: inline-block;
  font-size: 0.72rem;
  font-weight: 600;
  padding: 1px 6px;
  border-radius: 999px;
  background: #eef2ff;
  color: var(--accent);
  margin-left: 6px;
}

.tx-actions .group-delete {
  background: #fee2e2;
}

.form-actions {
  display: flex;
  gap: 8px;
}

.form-actions button[type="submit"] {
  flex: 1;
  padding: 10px;
  border: none;
  border-radius: 8px;
  background: var(--accent);
  color: #fff;
  font-weight: 600;
  cursor: pointer;
}

.form-actions .secondary {
  padding: 10px 14px;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: #fff;
  cursor: pointer;
}

.empty {
  color: var(--muted);
  font-size: 0.9rem;
  text-align: center;
  padding: 12px 0;
}

.tx-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.tx-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  padding: 10px 12px;
  border: 1px solid var(--border);
  border-radius: 10px;
}

.tx-main {
  display: flex;
  flex-direction: column;
}

.tx-category { font-weight: 600; }
.tx-meta { font-size: 0.8rem; color: var(--muted); }

.tx-amount {
  font-weight: 700;
  white-space: nowrap;
}

.tx-amount.receita { color: var(--receita); }
.tx-amount.despesa { color: var(--despesa); }

.tx-actions {
  display: flex;
  gap: 6px;
}

.tx-actions button {
  border: none;
  background: var(--bg);
  border-radius: 6px;
  padding: 6px 8px;
  cursor: pointer;
}

@media (max-width: 720px) {
  .content { grid-template-columns: 1fr; }
  .summary { grid-template-columns: 1fr; }
  .topbar h1 { font-size: 1.1rem; }
}