/* ===============================
   CRM Dashboard - Estilos globales
   =============================== */

body {
  font-family: 'Segoe UI', Arial, sans-serif;
  background-color: #f4f6f8;
  margin: 0;
  color: #333;
}

/* ======= Encabezado ======= */
header {
  background-color: #1e3a8a;
  color: #fff;
  padding: 15px 20px;
  text-align: center;
  font-size: 22px;
  font-weight: bold;
  letter-spacing: 0.5px;
}

/* ======= Menú lateral ======= */
nav {
  background-color: #1e40af;
  width: 220px;
  height: 100vh;
  position: fixed;
  top: 0;
  left: 0;
  padding-top: 60px;
}

nav ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

nav ul li {
  margin: 15px 0;
}

nav ul li a {
  color: #fff;
  text-decoration: none;
  font-weight: 600;
  display: block;
  padding: 10px 20px;
  transition: background 0.3s;
}

nav ul li a:hover {
  background-color: #2563eb;
  border-radius: 4px;
}

/* ======= Contenido principal ======= */
main {
  margin-left: 240px;
  padding: 30px;
}

h2 {
  color: #1e3a8a;
  margin-bottom: 20px;
}

/* ======= Tarjetas de indicadores ======= */
.cards {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  margin-bottom: 30px;
}

.card {
  background-color: #fff;
  border-radius: 8px;
  box-shadow: 0 2px 5px rgba(0,0,0,0.1);
  width: 23%;
  padding: 20px;
  text-align: center;
  transition: transform 0.2s;
}

.card:hover {
  transform: translateY(-5px);
}

.card h3 {
  color: #1e3a8a;
  margin-bottom: 10px;
}

.card p {
  font-size: 22px;
  font-weight: bold;
  color: #333;
}

/* ======= Tablas ======= */
table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 20px;
}

table th, table td {
  border: 1px solid #ddd;
  padding: 10px;
  text-align: left;
}

table th {
  background-color: #1e3a8a;
  color: #fff;
}

table tr:nth-child(even) {
  background-color: #f9fafb;
}

/* ======= Botones ======= */
button, .btn {
  background-color: #1e3a8a;
  color: #fff;
  border: none;
  padding: 10px 15px;
  border-radius: 4px;
  cursor: pointer;
  font-weight: 600;
  transition: background 0.3s;
}

button:hover, .btn:hover {
  background-color: #2563eb;
}

/* ======= Pie de página ======= */
footer {
  background-color: #1e3a8a;
  color: #fff;
  text-align: center;
  padding: 10px;
  position: fixed;
  bottom: 0;
  left: 240px;
  width: calc(100% - 240px);
  font-size: 14px;
}