body {
    background: #F5F5F5;
    font-family: 'Segoe UI', Arial, sans-serif;
    color: #222;
    margin: 0;
    padding: 0;
}
.login-bg {
    background: url('home.jpg') center top no-repeat #253A7B;
    background-size: cover;
}
.login-container {
    max-width: 350px;
    margin: 100px auto;
    background: #FFF;
    border-radius: 12px;
    padding: 36px 28px 20px 28px;
    box-shadow: 0 2px 12px #253A7B55;
    text-align: center;
}
.login-logo {
    width: 140px; margin-bottom: 12px;
}
.login-container h2 { color: #253A7B; }
input[type=text], input[type=number], input[type=password], input[type=email], input[type=date] {
    width: 90%; padding: 8px; margin: 8px 0; border: 1px solid #bbb; border-radius: 5px;
}
button, .btn {
    background: #253A7B; color: #fff; border: none; border-radius: 5px; padding: 8px 20px;
    font-weight: bold; cursor: pointer; transition: background 0.15s;
}
button:hover, .btn:hover { background: #1C2D5B; }
.dashboard-table { max-width: 98%; margin: 30px auto; }
table { border-collapse: collapse; width: 100%; background: #fff; }
th, td { padding: 8px 10px; border: 1px solid #ccc; text-align: left; }
th { background: #253A7B; color: #fff; }
tr:nth-child(even) { background: #f9f9f9; }
.filters { margin: 16px auto; text-align: center; }
.filters input, .filters select { margin: 0 2px 0 0; }
.pagination { text-align: center; margin: 16px 0; }
.pagination a { margin: 0 2px; padding: 4px 10px; color: #253A7B; border-radius: 4px; text-decoration: none; }
.pagination .active { background: #FFCC29; color: #222; }
.welcome-udi {
    background: #253A7B;
    color: #fff;
    padding: 28px 8px 16px 8px;
    margin-bottom: 18px;
    text-align: center;
    border-bottom: 6px solid #FFCC29;
}
.footer-udi {
    background: #253A7B; color: #fff; font-size: 15px; padding: 10px;
    text-align: center; margin-top: 40px; border-top: 4px solid #FFCC29;
}
.form-container, .detalle-popup {
    max-width: 440px; background: #fff; padding: 24px 18px;
    margin: 32px auto; border-radius: 10px; box-shadow: 0 1px 8px #253A7B33;
}
.form-container label { display: block; font-weight: bold; color: #253A7B; margin: 10px 0 2px 0; }
.success { color: #18b22c; margin-bottom: 10px; }
.error { color: #b22418; margin-bottom: 10px; }