.registration-header {
    height: 78px;
    padding: 10px clamp(20px, 5vw, 72px);
    display: flex;
    align-items: center;
    justify-content: space-between;
    background: #fff;
    border-bottom: 1px solid var(--reg-line);
    position: relative;
    z-index: 5;
}
.registration-brand { display: flex; align-items: center; gap: 12px; text-decoration: none; }
.registration-brand img { width: 55px; height: 55px; border-radius: 50%; object-fit: cover; }
.registration-brand span { display: grid; color: var(--reg-navy); line-height: 1.1; }
.registration-brand strong { font-size: 1.05rem; }
.registration-brand small { margin-top: 4px; color: var(--reg-muted); font-size: .69rem; letter-spacing: .08em; text-transform: uppercase; }
.secure-label { display: flex; align-items: center; gap: 8px; color: var(--reg-muted); font-size: .83rem; }
.secure-label span { width: 8px; height: 8px; background: var(--reg-success); border-radius: 50%; box-shadow: 0 0 0 5px rgba(22, 133, 91, .1); }

.registration-header-actions { display: flex; align-items: center; gap: 22px; }
.registration-login-button {
    min-height: 40px;
    padding: 0 18px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    color: #fff;
    background: #073b4c;
    border: 1px solid #073b4c;
    border-radius: 9px;
    font-size: .8rem;
    font-weight: 750;
    text-decoration: none;
    box-shadow: 0 8px 18px rgba(6, 29, 79, .13);
    transition: transform .2s ease, background-color .2s ease, box-shadow .2s ease;
}
.registration-login-button .svg-inline--fa,
.registration-login-button .fa-solid { width: 15px; height: 15px; }
.registration-login-button:hover {
    color: #fff;
    background: #14b8a6;
    transform: translateY(-1px);
    box-shadow: 0 10px 22px rgba(6, 29, 79, .2);
}

@media (max-width: 700px) {
    .registration-header { height: 70px; }
    .secure-label { display: none; }
    .registration-header-actions { gap: 8px; }
    .registration-login-button { min-height: 38px; padding: 0 13px; font-size: .72rem; }
}

@media (max-width: 370px) {
    .registration-login-button { padding-inline: 10px; }
    .registration-login-button .svg-inline--fa,
    .registration-login-button .fa-solid { display: none; }
}