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

/* Estilo general */
body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: #f0f4f8;
    color: #333;
    padding: 20px;
}

/* Contenedor de login */
.login-container {
    width: 350px;
    margin: 100px auto;
    padding: 30px;
    border-radius: 10px;
    background-color: #ffffff;
    box-shadow: 0px 10px 30px rgba(0, 0, 0, 0.1);
    text-align: center;
}

h1, h2 {
    color: #34495e;
    font-weight: 600;
}

p.error {
    color: #e74c3c;
    font-weight: bold;
    margin-bottom: 20px;
}

/* Formulario */
form {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

/* Estilo de los labels */
label {
    font-weight: bold;
    color: #34495e;
    margin-bottom: 8px;
}

/* Estilo de los inputs */
input[type="text"], input[type="password"] {
    padding: 12px;
    border: 1px solid #ddd;
    border-radius: 8px;
    transition: all 0.3s ease;
    font-size: 16px;
}

input[type="text"]:focus, input[type="password"]:focus {
    border-color: #3498db;
    outline: none;
}

/* Botón de submit */
button {
    padding: 12px;
    background-color: #3498db;
    color: white;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    transition: background-color 0.3s ease;
}

button:hover {
    background-color: #2980b9;
}

/* Estilo de las tablas */
table {
    width: 100%;
    margin-top: 30px;
    border-collapse: collapse;
    background-color: #ffffff;
    border-radius: 8px;
    box-shadow: 0px 10px 30px rgba(0, 0, 0, 0.1);
}

th, td {
    padding: 12px;
    text-align: left;
    color: #34495e;
}

th {
    background-color: #f0f4f8;
    font-weight: 600;
    border-top-left-radius: 8px;
    border-top-right-radius: 8px;
}

tbody tr:nth-child(odd) {
    background-color: #f9f9f9;
}

tbody tr:hover {
    background-color: #ecf0f1;
}

tbody td {
    border-bottom: 1px solid #ddd;
}

.pagination {
    margin-top: 20px;
    text-align: center;
}

.pagination a {
    margin: 0 8px;
    padding: 10px 20px;
    background-color: #3498db;
    color: white;
    border-radius: 30px;
    text-decoration: none;
    font-weight: bold;
    transition: background-color 0.3s ease;
}

.pagination a:hover {
    background-color: #2980b9;
}

/* Estilos para el spinner */
.spinner {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    border: 8px solid #f3f3f3; /* Color de fondo */
    border-top: 8px solid #3498db; /* Color del spinner */
    border-radius: 50%;
    width: 60px;
    height: 60px;
    animation: spin 1s linear infinite;
    display: none; /* Oculto por defecto */
}

/* Animación del spinner */
@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

input[type="date"] {
    padding: 12px;
    border-radius: 8px;
    border: 1px solid #ddd;
    font-size: 16px;
    transition: all 0.3s ease;
}

input[type="date"]:focus {
    border-color: #3498db;
    outline: none;
}