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


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


.container {
  width: 90%;
  max-width: 1200px;
  margin: 30px auto;
}


/* =========================
   HEADER
========================= */

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

  margin-bottom: 30px;
}

.header h1 {
  color: #1e3a8a;
  font-size: 42px;
}

nav {
  display: flex;
  gap: 20px;
}

nav a {
  text-decoration: none;
  color: #1e3a8a;
  font-weight: bold;
  font-size: 18px;
}

nav a:hover {
  color: #2563eb;
}


/* =========================
   CARDS
========================= */

.card {
  background: white;

  padding: 30px;

  border-radius: 16px;

  box-shadow: 0 4px 12px rgba(0,0,0,0.08);

  margin-bottom: 30px;
}

.card h2 {
  color: #1e3a8a;
  margin-bottom: 25px;
  font-size: 24px;
}


/* =========================
   FORMULARIO
========================= */

.form-grid {
  display: grid;

  grid-template-columns:
    repeat(auto-fit, minmax(220px, 1fr));

  gap: 20px;
}

label {
  display: block;
  margin-bottom: 8px;

  font-weight: bold;
}

input {
  width: 100%;

  padding: 12px;

  border: 1px solid #d1d5db;

  border-radius: 10px;

  font-size: 15px;

  outline: none;
}

input:focus {
  border-color: #2563eb;
}


/* =========================
   BOTONES
========================= */

.btn {
  margin-top: 25px;

  background: #2563eb;
  color: white;

  border: none;

  padding: 14px 22px;

  border-radius: 10px;

  cursor: pointer;

  font-size: 16px;
  font-weight: bold;

  transition: 0.2s;
}

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


/* =========================
   TABLA
========================= */

.table-container {
  overflow-x: auto;
}

table {
  width: 100%;
  border-collapse: collapse;
}

thead {
  background: #1e3a8a;
  color: white;
}

th,
td {
  padding: 16px;
  text-align: left;
}

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

tbody tr:hover {
  background: #eef2ff;
}


/* =========================
   BOTONES ACCIONES
========================= */

.acciones {
  display: flex;
  gap: 10px;
}

.btn-editar {
  background: #f59e0b;
  color: white;

  border: none;

  padding: 8px 12px;

  border-radius: 8px;

  cursor: pointer;
  font-weight: bold;
}

.btn-editar:hover {
  background: #d97706;
}

.btn-eliminar {
  background: #dc2626;
  color: white;

  border: none;

  padding: 8px 12px;

  border-radius: 8px;

  cursor: pointer;
  font-weight: bold;
}

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


/* =========================
   MENSAJES
========================= */

#mensaje {
  margin-top: 18px;
  font-weight: bold;
}

.success {
  color: green;
}

.error {
  color: red;
}


/* =========================
   RESPONSIVE
========================= */

@media (max-width: 768px) {

  .header {
    flex-direction: column;
    gap: 15px;
    align-items: flex-start;
  }

  .header h1 {
    font-size: 32px;
  }

}

/* =========================
   GRUPOS
========================= */

.grupos-grid {
  display: grid;

  grid-template-columns:
    repeat(auto-fit, minmax(250px, 1fr));

  gap: 20px;
}

.grupo-card {
  background: #eff6ff;

  border: 2px solid #2563eb;

  border-radius: 14px;

  padding: 20px;
}

.grupo-card h3 {
  color: #1e3a8a;
  margin-bottom: 15px;
}

.grupo-card ul {
  list-style: none;
}

.grupo-card li {
  padding: 8px 0;

  border-bottom: 1px solid #cbd5e1;
}


/* =========================
   HISTORIAL
========================= */

.historial-item {
  background: #f9fafb;

  border-left: 5px solid #2563eb;

  padding: 15px;

  margin-bottom: 15px;

  border-radius: 10px;
}

.historial-item h4 {
  color: #1e3a8a;
  margin-bottom: 10px;
}
/* =========================
   BOTÓN GUARDAR
========================= */

.btn-guardar {
  background: #16a34a;
}

.btn-guardar:hover {
  background: #15803d;
}

.btn-guardar:disabled {
  background: #9ca3af;
  cursor: not-allowed;
}


/* =========================
   ACCIONES SORTEO
========================= */

.acciones-sorteo {
  display: flex;
  gap: 15px;
  margin-top: 25px;
}