* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: Arial, sans-serif;
    background-color: #f5f5f5;
    color: #333;
}

header {
    background-color: #4CAF50;
    color: white;
    padding: 24px 20px;
    text-align: center;
}

h1 {
    font-size: 2rem;
    margin-bottom: 4px;
}

.autor {
    font-size: 0.85rem;
    opacity: 0.8;
}

.subtitulo {
    font-size: 1rem;
    margin-top: 6px;
    opacity: 0.9;
}

main {
    max-width: 900px;
    margin: 30px auto;
    padding: 0 20px;
    display: flex;
    flex-direction: column;
    gap: 24px;
}

section {
    background-color: #fff;
    border-radius: 8px;
    padding: 24px;
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.08);
}

h2 {
    font-size: 1.1rem;
    margin-bottom: 18px;
    color: #444;
    border-bottom: 2px solid #4CAF50;
    padding-bottom: 8px;
}

#form-gasto {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

#form-gasto button {
  align-self: flex-end;
}

.campo {
    display: flex;
    flex-direction: column;
    gap: 5px;
}

.campo label {
    font-size: 0.875rem;
    font-weight: bold;
    color: #555;
}

.campo input,
.campo select {
  padding: 10px 12px;
  border: 1px solid #ddd;
  border-radius: 6px;
  font-size: 0.95rem;
  transition: border-color 0.2s;
  outline: none;
}

.campo input:focus,
.campo select:focus {
  border-color: #4CAF50;
}

button[type="submit"] {
  margin-top: 6px;
  padding: 11px;
  background-color: #4CAF50;
  color: white;
  border: none;
  border-radius: 6px;
  font-size: 1rem;
  cursor: pointer;
  transition: background-color 0.2s;
}

button[type="submit"]:hover {
  background-color: #43A047;
}


.total-box {
  display: flex;
  justify-content: space-between;
  align-items: center;
  background-color: #f0f9f0;
  border: 1px solid #c8e6c9;
  border-radius: 6px;
  padding: 14px 18px;
  margin-bottom: 20px;
  font-size: 1rem;
}

.total-box strong {
  font-size: 1.3rem;
  color: #2e7d32;
}

/* --- tabela de gastos --- */
table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
}

thead tr {
  background-color: #f9f9f9;
}

th {
  text-align: left;
  padding: 10px 12px;
  border-bottom: 2px solid #eee;
  color: #555;
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

td {
  padding: 11px 12px;
  border-bottom: 1px solid #f0f0f0;
  vertical-align: middle;
}

tbody tr:hover {
  background-color: #fafafa;
}

/* alerta para gastos acima de R$ 100 */
.gasto-alto td {
  color: #c62828;
}

.gasto-alto td:first-child::before {
  content: "⚠ ";
  font-size: 0.85rem;
}

/* ── mensagem de lista vazia ── */
#msg-vazia {
  text-align: center;
  color: #aaa;
  font-size: 0.9rem;
  padding: 20px 0;
}

/* botao editar */
.btn-editar {
  background: none;
  border: 1px solid #64b5f6;
  color: #64b5f6;
  border-radius: 5px;
  padding: 4px 10px;
  font-size: 0.8rem;
  cursor: pointer;
  transition: all 0.2s;
}

.btn-editar:hover {
  background-color: #64b5f6;
  color: white;
}

/* ── botão excluir ── */
.btn-excluir {
  background: none;
  border: 1px solid #e57373;
  color: #e57373;
  border-radius: 5px;
  padding: 4px 10px;
  font-size: 0.8rem;
  cursor: pointer;
  transition: all 0.2s;
}

.btn-excluir:hover {
  background-color: #e57373;
  color: white;
}

/* ── footer ── */
footer {
  text-align: center;
  padding: 20px;
  font-size: 0.85rem;
  color: #999;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

footer a {
  color: #4CAF50;
  text-decoration: none;
}

footer a:hover {
  text-decoration: underline;
}

/* ── melhorando a responsividade ── */
@media (min-width: 600px) {
  #form-gasto {
    display: grid;
    grid-template-columns: 1fr 1fr;
  }

  #form-gasto button {
    grid-column: 1 / -1;
  }

  footer {
    flex-direction: row;
    justify-content: center;
    gap: 20px;
  }
}