body {
    font-family: 'Poppins', sans-serif;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: #f5f7fb;
    padding: 40px 15px;
}

.card {
    border: none;
    border-radius: 22px;
    overflow: hidden;
    backdrop-filter: blur(20px);
    background: rgba(255, 255, 255, .92);
    box-shadow: 0 20px 60px rgba(0, 0, 0, .25);
}

.card-header {
    background: linear-gradient(90deg, #0d6efd, #6610f2);
    padding: 28px 30px 30px;
    border: none;
}

.logo-wrapper {
    width: 72px;
    height: 72px;
    margin: 0 auto 16px;
    display: flex;
    align-items: center;
    justify-content: center;

    background: rgba(255, 255, 255, 0.95);
    border-radius: 50%;

    box-shadow:
        0 8px 20px rgba(0, 0, 0, 0.18),
        0 0 0 5px rgba(255, 255, 255, 0.12);

    overflow: hidden;
}

.metro-logo {
    width: 58px;
    height: 58px;
    object-fit: contain;
    display: block;
}

.card-header h2 {
    font-size: 28px;
    line-height: 1.25;
    margin-bottom: 10px !important;
}

.powered-text {
    color: rgba(255, 255, 255, 0.85);
    font-size: 14px;
}

.powered-text a {
    color: #ffffff !important;
    text-decoration: none;
    font-weight: 600;
    transition: opacity 0.2s ease;
}

.powered-text a:hover {
    color: #ffffff !important;
    opacity: 0.85;
    text-decoration: none;
}

.card-body {
    padding: 35px;
}

.form-label {
    font-weight: 600;
    color: #555;
    margin-bottom: 8px;
}

.input-group-text {
    border-radius: 12px 0 0 12px;
    border: none;
    background: #eef4ff;
    color: #0d6efd;
}

.form-control {
    border: none;
    border-radius: 0 12px 12px 0;
    padding: 14px;
    background: #f8f9fa;
    transition: .3s;
}

.form-control:focus {
    background: #f8f9fa;
    border-color: #dee2e6;
    box-shadow: none;
}

.btn-register {
    height: 54px;
    border-radius: 14px;
    font-weight: 600;
    font-size: 16px;
    background: linear-gradient(90deg, #0d6efd, #6610f2);
    border: none;
    transition: .3s;
}

.btn-register:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 25px rgba(13, 110, 253, .35);
}

.alert {
    border-radius: 12px;
}

.footer-text {
    color: #888;
    font-size: 13px;
}

.badge-custom {
    background: #eef4ff;
    color: #0d6efd;
    padding: 8px 14px;
    border-radius: 50px;
    font-weight: 500;
}

.text-red {
    --bs-text-opacity: 1;
    color: rgba(var(--bs-danger-rgb), var(--bs-text-opacity));
}

@media(max-width:768px) {
    .card-header {
        padding: 25px 20px 28px;
    }

    .logo-wrapper {
        width: 65px;
        height: 65px;
        margin-bottom: 14px;
    }

    .metro-logo {
        width: 52px;
        height: 52px;
    }

    .card-header h2 {
        font-size: 22px;
    }

    .powered-text {
        font-size: 13px;
    }

    .card-body {
        padding: 25px;
    }
}