* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: Segoe UI, sans-serif;
}

body {
    background: #0f172a;
    color: white;
}

.contenedor {
    width: 90%;
    max-width: 1200px;
    margin: 40px auto;
}

h1 {
    text-align: center;
    margin-bottom: 20px;
}

h2 {
    margin: 30px 0 15px;
}

nav {
    text-align: center;
    margin-bottom: 30px;
}

nav a {
    text-decoration: none;
    color: white;
    background: #2563eb;
    padding: 10px 20px;
    border-radius: 8px;
    margin: 0 10px;
    transition: .3s;
}

nav a:hover {
    background: #1d4ed8;
}

table {
    width: 100%;
    border-collapse: collapse;
    background: white;
    color: black;
    border-radius: 10px;
    overflow: hidden;
}

th {
    background: #2563eb;
    color: white;
}

th,
td {
    padding: 12px;
    border: 1px solid #ddd;
    text-align: center;
}

form {
    margin-top: 20px;
}

input,
textarea {
    width: 100%;
    padding: 12px;
    margin-bottom: 15px;
    border: none;
    border-radius: 8px;
}

.btnGuardar {
    background: #16a34a;
    color: white;
    border: none;
    padding: 12px 20px;
    border-radius: 8px;
    cursor: pointer;
}

.btnGuardar:hover {
    background: #15803d;
}

.btnEliminar {
    background: #dc2626;
    color: white;
    border: none;
    padding: 8px 15px;
    border-radius: 8px;
    cursor: pointer;
}

.btnEliminar:hover {
    background: #b91c1c;
}