body {
    background: linear-gradient(135deg, #1e293b 0%, #0f172a 100%);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
}
.login-card {
    background: #fff;
    border-radius: 16px;
    padding: 2.5rem;
    width: 100%;
    max-width: 420px;
    box-shadow: 0 25px 60px rgba(0,0,0,.4);
}
.brand-icon {
    width: 56px; height: 56px;
    background: linear-gradient(135deg, #f97316, #ea580c);
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-size: 1.6rem;
    margin-bottom: 1rem;
}
.btn-primary { background: #f97316; border-color: #f97316; }
.btn-primary:hover { background: #ea580c; border-color: #ea580c; }
.form-control:focus {
    border-color: #f97316;
    box-shadow: 0 0 0 .2rem rgba(249,115,22,.25);
}