/* ================================
   RESET BÁSICO
================================ */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html, body {
  font-family: Arial, Helvetica, sans-serif;
  background: #f3f4f6;
  color: #1f2937;
  height: 100%;
}

/* ================================
   LAYOUT GERAL
================================ */
body {
  margin-left: 240px; /* espaço do menu lateral */
}

.content {
  padding: 20px;
}

/* ================================
   TÍTULOS
================================ */
h1 {
  font-size: 28px;
  margin-bottom: 20px;
  color: #111827;
}

h2 {
  font-size: 22px;
  margin: 20px 0 10px;
  color: #1f2937;
}

h3, h4 {
  margin: 15px 0 8px;
  color: #374151;
}

/* ================================
   FORMULÁRIOS
================================ */
label {
  font-weight: bold;
  margin-top: 10px;
  display: block;
}

input, select, textarea {
  width: 100%;
  padding: 10px;
  margin: 8px 0 16px;
  border: 1px solid #d1d5db;
  border-radius: 6px;
  background: white;
  font-size: 14px;
}

input:focus, select:focus, textarea:focus {
  outline: none;
  border-color: #2563eb;
  box-shadow: 0 0 0 2px rgba(37, 99, 235, 0.2);
}

/* ================================
   BOTÕES
================================ */
button, .btn {
  padding: 10px 16px;
  border: none;
  border-radius: 6px;
  cursor: pointer;
  font-size: 14px;
  font-weight: bold;
  transition: 0.2s;
}

.btn-primary {
  background: #2563eb;
  color: white;
}

.btn-primary:hover {
  background: #1d4ed8;
}

.btn-danger {
  background: #dc2626;
  color: white;
}

.btn-danger:hover {
  background: #b91c1c;
}

.btn-secondary {
  background: #6b7280;
  color: white;
}

.btn-secondary:hover {
  background: #4b5563;
}

/* ================================
   CARDS
================================ */
.card {
  background: white;
  padding: 20px;
  border-radius: 10px;
  box-shadow: 0 2px 6px rgba(0,0,0,0.08);
  margin-bottom: 20px;
}

/* ================================
   TABELAS
================================ */
table {
  width: 100%;
  border-collapse: collapse;
  margin: 20px 0;
  background: white;
  border-radius: 10px;
  overflow: hidden;
}

table th {
  background: #1f2937;
  color: white;
  padding: 12px;
  text-align: left;
}

table td {
  padding: 12px;
  border-bottom: 1px solid #e5e7eb;
}

table tr:hover {
  background: #f9fafb;
}

/* ================================
   ALERTAS
================================ */
.alert {
  padding: 12px 16px;
  border-radius: 6px;
  margin-bottom: 20px;
}

.alert-success {
  background: #d1fae5;
  color: #065f46;
}

.alert-error {
  background: #fee2e2;
  color: #991b1b;
}

.alert-warning {
  background: #fef3c7;
  color: #92400e;
}

/* ================================
   FLEX / GRID UTILITÁRIOS
================================ */
.flex {
  display: flex;
}

.flex-between {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.grid-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

/* ================================
   LINKS
================================ */
a {
  color: #2563eb;
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}