body.auth-body {
    display: flex;
    flex-direction: column;
    min-width: 0;
    min-height: 100vh;
    min-height: 100dvh;
    background: radial-gradient(ellipse at 50% 0, rgba(57, 219, 229, 0.09), transparent 60%),
        linear-gradient(180deg, var(--public-bg), var(--public-bg-deep));
}

/* Let the full public header reserve its height above the existing auth spacing. */
.auth-body--public > .public-header {
    position: relative;
}

.auth-main {
    display: grid;
    flex: 1;
    width: 100%;
    min-width: 0;
    place-items: center;
    padding: 48px 24px;
}

.auth-panel {
    width: 100%;
    max-width: 480px;
    min-width: 0;
    padding: clamp(24px, 4vw, 40px);
    border: 1px solid var(--public-line);
    border-radius: var(--public-radius);
    background: var(--public-panel);
    box-shadow: var(--public-shadow);
    overflow-wrap: anywhere;
}

.auth-panel--wide {
    max-width: 760px;
}

.auth-panel h1,
.auth-panel h2 {
    margin: 0 0 24px;
    color: var(--public-text);
    font-size: clamp(24px, 3vw, 30px);
    font-weight: 550;
    letter-spacing: -0.035em;
    line-height: 1.25;
}

.auth-panel h3 {
    margin: 0 0 12px;
    font-size: 18px;
    font-weight: 600;
    line-height: 1.4;
}

.auth-panel p {
    margin: 16px 0;
    color: var(--public-muted);
}

.auth-panel > :last-child,
.auth-panel section > :last-child {
    margin-bottom: 0;
}

.auth-panel a {
    color: var(--public-accent-soft);
    text-underline-offset: 4px;
}

.auth-panel a:hover {
    color: var(--public-text);
}

.auth-panel form,
.auth-panel fieldset {
    min-width: 0;
}

/* Spacing is supplied by form controls instead of legacy line breaks. */
.auth-panel form br {
    display: none;
}

.auth-panel label {
    display: block;
    margin: 16px 0 6px;
    font-size: 14px;
    font-weight: 550;
}

.auth-panel input:not([type="hidden"]):not([type="checkbox"]):not([type="radio"]),
.auth-panel select {
    display: block;
    width: 100%;
    min-width: 0;
    min-height: 48px;
    padding: 11px 13px;
    border: 1px solid var(--public-line);
    border-radius: 8px;
    background: var(--public-bg-deep);
    color: var(--public-text);
    font: inherit;
    line-height: 1.4;
}

.auth-panel input::placeholder {
    color: var(--public-muted);
    opacity: 0.75;
}

.auth-panel input:focus-visible,
.auth-panel select:focus-visible,
.auth-panel button:focus-visible {
    outline: 2px solid var(--public-accent-soft);
    outline-offset: 3px;
    border-color: var(--public-accent);
}

.auth-panel input[type="checkbox"],
.auth-panel input[type="radio"] {
    accent-color: var(--public-accent);
}

.auth-panel button {
    display: inline-flex;
    min-height: 48px;
    max-width: 100%;
    align-items: center;
    justify-content: center;
    margin-top: 24px;
    padding: 12px 22px;
    border: 1px solid var(--public-accent);
    border-radius: 9px;
    background: linear-gradient(135deg, #75edf2, #22cedd);
    box-shadow: 0 12px 34px rgba(38, 211, 224, 0.16);
    color: #001017;
    cursor: pointer;
    font: inherit;
    font-weight: 600;
    line-height: 1.4;
    text-align: center;
}

.auth-panel button:hover:not(:disabled) {
    background: var(--public-accent-soft);
    box-shadow: 0 16px 38px rgba(38, 211, 224, 0.24);
}

.auth-panel button:disabled {
    cursor: wait;
    opacity: 0.6;
}

.auth-panel:not(.auth-panel--wide) button[type="submit"] {
    width: 100%;
}

.auth-panel .ff-register-form > button[type="submit"] {
    width: 100%;
    margin-top: 32px;
}

.auth-panel .ff-register-form + p {
    text-align: center;
}

.auth-panel small {
    display: block;
    margin-top: 8px;
    color: var(--public-muted);
    font-size: 13px;
    line-height: 1.6;
}

.auth-panel .alert,
.auth-panel .ff-register-vat-result {
    margin: 0 0 20px;
    padding: 12px 16px;
    border: 1px solid var(--public-line);
    border-radius: 10px;
    background: var(--public-panel-strong);
    color: var(--public-muted);
    line-height: 1.5;
}

.auth-panel .alert-success,
.auth-panel .ff-register-vat-result--success {
    border-color: rgba(90, 220, 155, 0.35);
    background: rgba(35, 154, 97, 0.12);
    color: #a0efc5;
}

.auth-panel .alert-info {
    border-color: var(--public-line-strong);
    background: rgba(57, 219, 229, 0.08);
    color: var(--public-accent-soft);
}

.auth-panel .alert-warning,
.auth-panel .ff-register-vat-result--warning {
    border-color: rgba(240, 180, 75, 0.35);
    background: rgba(240, 160, 40, 0.1);
    color: #ffda94;
}

.auth-panel .alert-danger {
    border-color: rgba(255, 125, 140, 0.35);
    background: rgba(225, 65, 90, 0.12);
    color: #ffb5bf;
}

.auth-panel fieldset,
.auth-panel .ff-verification-action {
    margin: 24px 0;
    padding: 20px;
    border: 1px solid var(--public-line);
    border-radius: var(--public-radius);
    background: rgba(2, 9, 16, 0.24);
}

.auth-panel legend {
    max-width: 100%;
    padding: 0 8px;
    color: var(--public-accent-soft);
    font-size: 16px;
    font-weight: 600;
}

.auth-panel .ff-register-address-grid,
.auth-panel .ff-billing-address-fields {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 16px 24px;
    margin-top: 16px;
}

.auth-panel .ff-register-address-field {
    display: grid;
    align-content: start;
    min-width: 0;
}

.auth-panel .ff-register-address-field--wide {
    grid-column: 1 / -1;
}

.auth-panel .ff-register-address-field label {
    margin-top: 0;
}

.auth-panel .ff-billing-toggle {
    display: flex;
    align-items: flex-start;
    gap: 12px;
}

.auth-panel .ff-billing-toggle input {
    flex: 0 0 auto;
    margin-top: 4px;
}

.auth-panel .ff-register-vat-control {
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: stretch;
    gap: 12px;
}

.auth-panel .ff-register-vat-control button {
    margin-top: 0;
}

.auth-panel .ff-register-vat-result {
    display: block;
    width: fit-content;
    max-width: 100%;
    margin: 8px 0 0;
    font-size: 14px;
}

.auth-panel .ff-registration-success-messages {
    display: grid;
    gap: 12px;
    margin: 0 0 20px;
}

.auth-panel .ff-registration-success-messages .alert {
    margin: 0;
}

.auth-panel .ff-auth-mobile-notice {
    display: none;
}

/* Keep the existing billing/VIES visibility controls authoritative. */
.auth-panel [hidden] {
    display: none !important;
}

@media (max-width: 959px) {
    .auth-panel .ff-auth-mobile-notice {
        display: block;
        min-width: 0;
        margin: 0 0 24px;
        padding: 16px;
        border: 1px solid var(--public-line);
        border-radius: 10px;
        background: rgba(57, 219, 229, 0.06);
        box-shadow: inset 3px 0 0 rgba(57, 219, 229, 0.5);
    }

    .auth-panel .ff-auth-mobile-notice__title {
        margin: 0 0 8px;
        color: var(--public-text);
        font-size: 16px;
        font-weight: 600;
        letter-spacing: 0;
        line-height: 1.4;
    }

    .auth-panel .ff-auth-mobile-notice__text {
        margin: 0;
        color: var(--public-muted);
        font-size: 14px;
        line-height: 1.6;
    }
}

@media (max-width: 720px) {
    .auth-panel .ff-register-address-grid,
    .auth-panel .ff-billing-address-fields {
        grid-template-columns: minmax(0, 1fr);
    }
}

@media (max-width: 36rem) {
    .auth-main {
        padding: 24px 16px;
    }

    .auth-panel {
        padding: 24px 20px;
    }

    .auth-panel fieldset,
    .auth-panel .ff-verification-action {
        padding: 16px;
    }

    .auth-panel .ff-register-vat-control {
        grid-template-columns: minmax(0, 1fr);
    }

    .auth-panel button {
        width: 100%;
    }
}