body {
    background: linear-gradient(135deg, #0E2A47, #133B66, #1A4A80);
    background-attachment: fixed;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: 'Trebuchet MS', sans-serif;
    color: #eef5ff;
    padding: 50px 0;
}

body::before {
    content: "";
    position: fixed;
    inset: 0;
    background: rgba(255, 255, 255, 0.03);
    backdrop-filter: brightness(1.5);
    pointer-events: none;
}

.card {
    border-radius: 18px;
    backdrop-filter: blur(14px);
    background: rgba(255, 255, 255, 0.10);
    box-shadow: 0 0 25px rgba(0, 0, 0, 0.25);
    border: 1px solid rgba(255,255,255,0.2);
    max-width: 650px;
}

.title-y2k {
    font-size: 2.4rem;
    font-weight: 700;
    color: #e7f1ff;
    text-shadow: 0 0 14px rgba(180, 210, 255, 0.45);
}

.sub-y2k {
    font-size: 1.1rem;
    color: #d5e5ff;
    opacity: 0.95;
}

.form-label {
    font-weight: 600;
    color: #d4e6ff;
}

.form-control, .form-select {
    background-color: rgba(255, 255, 255, 0.2);
    border: 1px solid rgba(255,255,255,0.35);
    color: #fff;
    padding: 12px;
    border-radius: 12px;
}

.form-control::placeholder, .form-select::placeholder {
    color: rgba(255,255,255,0.65);
}

.form-control:focus, .form-select:focus {
    background-color: rgba(255, 255, 255, 0.25);
    border-color: #5da4ff;
    box-shadow: 0 0 12px rgba(90,150,255,0.35);
    color: #fff;
}

.form-floating>.form-control:focus~label::after, .form-floating>.form-control:not(:placeholder-shown)~label::after,
.form-floating>.form-select:focus~label::after, .form-floating>.form-select:not(:placeholder-shown)~label::after{
    background-color: transparent;
}

.form-floating>.form-control:focus~label, .form-floating>.form-control:not(:placeholder-shown)~label,
.form-floating>.form-select:focus~label, .form-floating>.form-select:not(:placeholder-shown)~label {
    color: #d4e6ff;
}

.btn-y2k {
    background: linear-gradient(135deg, #1E63B7, #154D8C);
    border: none;
    padding: 12px 28px;
    font-weight: 600;
    color: white;
    border-radius: 12px;
    box-shadow: 0 4px 14px rgba(20, 60, 120, 0.45);
    transition: 0.2s;
}

.btn-y2k:hover {
    transform: translateY(-2px);
    box-shadow: 0 7px 22px rgba(20, 60, 120, 0.55);
}

:not(.btn-check)+.btn:active, .btn-y2k:hover {
    color: white;
}

a.back-link {
    color: #bcd8ff;
    text-decoration: none;
}

a.back-link:hover {
    text-decoration: underline;
}

@media screen and (min-width: 426px) {
    .card #partnerRequestForm {
        width: 450px;
    }
}