.whatsapp-login {
    display: block;
    max-width: 720px;
    padding-top: 42px;
    padding-bottom: 72px;
}

.whatsapp-login__intro {
    position: sticky;
    top: 132px;
    max-width: 650px;
    padding: 48px 10% 48px 0;
}

.whatsapp-login__intro h1 {
    max-width: 620px;
    margin: 18px 0 20px;
    font-size: clamp(44px, 6vw, 78px);
    line-height: 0.98;
    letter-spacing: -0.065em;
}

.whatsapp-login__intro p {
    max-width: 600px;
    margin: 0;
    color: var(--muted);
    font-size: 18px;
    line-height: 1.7;
}

.whatsapp-login__boundary {
    max-width: 600px;
    margin-top: 30px;
    border-left: 3px solid var(--ink);
    padding: 4px 0 4px 18px;
}

.whatsapp-login__boundary p {
    margin-top: 6px;
    font-size: 14px;
    line-height: 1.6;
}

.whatsapp-login__eds-link {
    display: grid;
    gap: 5px;
    max-width: 600px;
    margin-top: 18px;
    border: 1px solid var(--border);
    border-radius: 16px;
    background: #fff;
    padding: 16px 18px;
    text-decoration: none;
    transition: transform 160ms ease, border-color 160ms ease;
}

.whatsapp-login__eds-link:hover {
    border-color: #aeb3bb;
    transform: translateY(-2px);
}

.whatsapp-login__eds-link span {
    color: var(--muted);
    font-size: 12px;
}

.whatsapp-login__eds-link strong {
    font-size: 14px;
}

.whatsapp-login__card {
    border: 1px solid var(--border);
    border-radius: 26px;
    background: var(--surface);
    box-shadow: var(--shadow);
    padding: clamp(24px, 4vw, 42px);
    animation: auth-card-in 460ms cubic-bezier(0.2, 0.75, 0.25, 1) both;
}

.whatsapp-login__card--single {
    width: 100%;
}

.auth-heading {
    margin-bottom: 28px;
    text-align: center;
}

.auth-heading h1 {
    margin: 12px 0 10px;
    font-size: clamp(38px, 7vw, 58px);
    letter-spacing: -0.055em;
}

.auth-heading p {
    max-width: 540px;
    margin: 0 auto;
    color: var(--muted);
    font-size: 16px;
    line-height: 1.6;
}

.whatsapp-login__form {
    display: grid;
    gap: 14px;
}

.whatsapp-login__form h2,
.whatsapp-login__signed-in h2 {
    margin: 10px 0 6px;
    font-size: 28px;
    letter-spacing: -0.035em;
}

.whatsapp-login__form label {
    margin-top: 10px;
    font-size: 14px;
    font-weight: 750;
}

.whatsapp-login__form input:not([type="checkbox"]):not([type="radio"]) {
    width: 100%;
    min-height: 58px;
    border: 1px solid #cfd4db;
    border-radius: 14px;
    background: #fff;
    color: var(--ink);
    padding: 0 16px;
    font: inherit;
    font-size: 18px;
    transition: border-color 150ms ease, box-shadow 150ms ease;
}

.whatsapp-login__form input:not([type="checkbox"]):not([type="radio"]):focus {
    border-color: #717780;
    box-shadow: 0 0 0 4px rgba(113, 119, 128, 0.14);
    outline: none;
}

.whatsapp-login__form input:not([type="checkbox"]):not([type="radio"]):user-invalid {
    border-color: #c35b5b;
    background: #fffafa;
}

.whatsapp-login__form .button {
    width: 100%;
    margin-top: 8px;
}

.whatsapp-login__hint,
.whatsapp-login__field-help,
.whatsapp-login__signed-in p {
    margin: 0;
    color: var(--muted);
    line-height: 1.55;
}

.whatsapp-login__field-help {
    font-size: 13px;
}

.whatsapp-login__terms {
    margin: 0;
    color: var(--muted);
    font-size: 13px;
    line-height: 1.55;
}

.whatsapp-login__terms a {
    color: var(--ink);
    font-weight: 700;
    text-underline-offset: 2px;
}

.whatsapp-login__error {
    color: #a22727;
    font-size: 14px;
    font-weight: 650;
    line-height: 1.45;
}

.whatsapp-login__error--box {
    margin-bottom: 24px;
    border: 1px solid #efcaca;
    border-radius: 14px;
    background: #fff5f5;
    padding: 14px 16px;
}

.whatsapp-login__notice,
.whatsapp-login__identity-note {
    border: 1px solid #dce2df;
    border-radius: 14px;
    background: #f5f8f6;
    padding: 14px 16px;
    color: #344139;
    line-height: 1.5;
}

.whatsapp-login__notice {
    margin-bottom: 24px;
}

.whatsapp-login__divider {
    display: flex;
    align-items: center;
    gap: 12px;
    margin: 26px 0;
    color: var(--quiet);
    font-size: 12px;
    text-transform: uppercase;
    letter-spacing: 0.12em;
}

.whatsapp-login__divider::before,
.whatsapp-login__divider::after {
    height: 1px;
    flex: 1;
    background: var(--border-soft);
    content: "";
}

.whatsapp-login__signed-in {
    display: flex;
    gap: 16px;
    align-items: flex-start;
}

.whatsapp-login__check {
    width: 44px;
    height: 44px;
    display: grid;
    flex: 0 0 auto;
    place-items: center;
    border-radius: 50%;
    background: var(--ink);
    color: #fff;
    font-size: 22px;
}

.whatsapp-login__identity-note {
    margin-top: 28px;
}

.whatsapp-login__identity-note p {
    margin: 6px 0 0;
}

.whatsapp-login__actions {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    margin-top: 24px;
}

.whatsapp-login__actions form {
    margin: 0;
}

.whatsapp-login__security {
    grid-column: 2;
    border: 1px solid var(--border-soft);
    border-radius: 18px;
    background: rgba(255, 255, 255, 0.55);
    padding: 20px 24px;
}

.whatsapp-login__security ul {
    margin: 10px 0 0;
    padding-left: 20px;
    color: var(--muted);
    font-size: 14px;
    line-height: 1.7;
}

.auth-methods {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 12px;
}

.auth-methods form,
.auth-methods .button {
    width: 100%;
    height: 100%;
}

.auth-methods .button,
.whatsapp-login__form .button,
.auth-reset {
    transition: transform 160ms ease, box-shadow 160ms ease, border-color 160ms ease, background-color 160ms ease;
}

.auth-methods .button:hover,
.whatsapp-login__form .button:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 24px rgba(28, 31, 36, 0.12);
}

.auth-methods .button:active,
.whatsapp-login__form .button:active {
    transform: translateY(0) scale(0.99);
}

.auth-switch {
    margin: 24px 0 0;
    text-align: center;
}

.auth-switch a,
.auth-reset {
    color: var(--ink);
    font-weight: 750;
    text-underline-offset: 3px;
}

.auth-reset {
    display: block;
    margin-top: 20px;
    text-align: center;
}

.registration-summary {
    display: grid;
    gap: 5px;
    margin: 0 0 24px;
    border: 1px solid #dce2df;
    border-radius: 16px;
    background: #f5f8f6;
    padding: 16px 18px;
}

.registration-summary > span,
.registration-summary > small {
    color: var(--muted);
    font-size: 12px;
    line-height: 1.5;
}

.registration-summary > strong {
    font-size: 18px;
    line-height: 1.35;
}

.registration-summary--large {
    margin-bottom: 28px;
    padding: 20px;
}

.registration-summary dl {
    display: grid;
    gap: 8px;
    margin: 12px 0 0;
}

.registration-summary dl div {
    display: grid;
    grid-template-columns: 120px minmax(0, 1fr);
    gap: 12px;
}

.registration-summary dt {
    color: var(--muted);
}

.registration-summary dd {
    margin: 0;
}

.account-type-picker {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 10px;
    margin: 0 0 8px;
    border: 0;
    padding: 0;
}

.account-type-picker legend {
    grid-column: 1 / -1;
    margin-bottom: 8px;
    font-size: 14px;
    font-weight: 750;
}

.account-type-picker label {
    position: relative;
    display: block;
    margin: 0;
    cursor: pointer;
}

.account-type-picker input {
    position: absolute;
    opacity: 0;
    pointer-events: none;
}

.account-type-picker span {
    display: grid;
    gap: 3px;
    min-height: 74px;
    border: 1px solid #cfd4db;
    border-radius: 14px;
    padding: 14px 16px;
}

.account-type-picker small {
    color: var(--muted);
}

.account-type-picker input:checked + span {
    border-color: var(--ink);
    box-shadow: inset 0 0 0 1px var(--ink);
    background: #f7f7f5;
}

.account-type-picker input:focus-visible + span {
    outline: 3px solid rgba(113, 119, 128, 0.3);
    outline-offset: 2px;
}

@keyframes auth-card-in {
    from {
        opacity: 0;
        transform: translateY(14px) scale(0.99);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

@media (prefers-reduced-motion: reduce) {
    .whatsapp-login__card {
        animation: none;
    }

    .auth-methods .button,
    .whatsapp-login__form .button,
    .auth-reset,
    .whatsapp-login__form input {
        transition: none;
    }
}

@media (max-width: 900px) {
    .whatsapp-login {
        max-width: 680px;
        padding-top: 32px;
    }

    .whatsapp-login__intro {
        position: static;
        padding: 28px 0 0;
    }

    .whatsapp-login__security {
        grid-column: 1;
    }
}

@media (max-width: 560px) {
    .whatsapp-login {
        padding-top: 18px;
        padding-bottom: 40px;
    }

    .whatsapp-login__intro h1 {
        font-size: 44px;
    }

    .whatsapp-login__card {
        border-radius: 20px;
        padding: 22px 18px;
    }

    .auth-heading h1 {
        font-size: 40px;
    }

    .whatsapp-login__form input:not([type="checkbox"]):not([type="radio"]) {
        min-height: 56px;
        font-size: 16px;
    }

    .whatsapp-login__actions,
    .whatsapp-login__actions .button,
    .whatsapp-login__actions form {
        width: 100%;
    }

    .auth-methods,
    .account-type-picker {
        grid-template-columns: 1fr;
    }

    .registration-summary dl div {
        grid-template-columns: 1fr;
        gap: 2px;
    }
}