/* 公共登录弹窗：遮罩、二维码和协议独立于页面业务样式。 */
.auth-dialog {
    position: fixed;
    inset: 0;
    z-index: 2000;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 24px;
    background: rgba(24, 20, 17, .56);
    backdrop-filter: blur(4px);
    visibility: hidden;
    opacity: 0;
    pointer-events: none;
    transition: opacity .2s ease, visibility .2s;
}

.auth-dialog.open {
    visibility: visible;
    opacity: 1;
    pointer-events: auto;
}

body.auth-dialog-open {
    overflow: hidden;
}

.auth-dialog .content {
    position: relative;
    width: 420px;
    max-width: 100%;
    max-height: calc(100vh - 48px);
    max-height: calc(100dvh - 48px);
    padding: 34px 28px 26px;
    overflow-y: auto;
    overscroll-behavior: contain;
    border: 1px solid rgba(255, 255, 255, .8);
    border-radius: 18px;
    background: #fff;
    box-shadow: 0 24px 80px rgba(18, 12, 8, .25);
    text-align: center;
    transform: translateY(12px) scale(.98);
    transition: transform .22s ease;
}

.auth-dialog.open .content {
    transform: translateY(0) scale(1);
}

.auth-dialog .content:focus {
    outline: none;
}

.auth-dialog .close {
    position: absolute;
    top: 14px;
    right: 14px;
    display: grid;
    place-items: center;
    width: 32px;
    height: 32px;
    padding: 0;
    border: 0;
    border-radius: 50%;
    background: #f4f5f7;
    color: #8a909b;
    opacity: 1;
    float: none;
    text-shadow: none;
    cursor: pointer;
}

.auth-dialog .close:hover {
    background: #edeff2;
    color: #414752;
    opacity: 1;
}

.auth-dialog .close svg {
    width: 16px;
    height: 16px;
}

.auth-dialog-brand {
    margin: 0 0 10px;
    color: #a87a45;
    font-size: 13px;
    font-weight: 600;
    letter-spacing: 1.5px;
}

.auth-dialog-heading {
    margin: 0;
    color: #292b34;
    font-size: 26px;
    font-weight: 600;
    line-height: 1.4;
}

.auth-dialog-description {
    margin: 10px 0 0;
    color: #8a909b;
    font-size: 14px;
    line-height: 1.8;
}

.auth-dialog-qr {
    position: relative;
    width: 234px;
    max-width: 100%;
    margin: 24px auto 16px;
    padding: 12px;
    border: 1px solid #e4e7eb;
    border-radius: 12px;
    background: #fff;
}

.auth-dialog-code {
    width: 208px;
    max-width: 100%;
    aspect-ratio: 1;
    margin: 0 auto;
}

.auth-dialog-code img,
.auth-dialog-code canvas {
    width: 100% !important;
    height: auto !important;
    max-width: 100%;
    margin: 0;
    vertical-align: middle;
}

.auth-dialog-placeholder {
    position: absolute;
    inset: 12px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 16px;
    border-radius: 6px;
    background: #f8f9fb;
    color: #9298a3;
    font-size: 13px;
    pointer-events: none;
}

.auth-dialog-qr:has(.auth-dialog-code img, .auth-dialog-code canvas) .auth-dialog-placeholder {
    display: none;
}

.auth-dialog-spinner {
    width: 26px;
    height: 26px;
    border: 2px solid #e4e7eb;
    border-top-color: #b98b58;
    border-radius: 50%;
    animation: auth-qr-loading .9s linear infinite;
}

.auth-dialog-hint {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 7px;
    margin: 0;
    color: #626976;
    font-size: 14px;
    line-height: 1.8;
}

.auth-dialog-hint svg {
    width: 20px;
    height: 20px;
    color: #31865d;
}

.auth-dialog-account {
    margin: 16px 0 0;
    font-size: 14px;
    line-height: 1.8;
}

.auth-dialog-account a {
    display: inline-block;
    padding: 4px 12px;
    color: #a3592c;
}

.auth-dialog-terms {
    margin: 22px 0 0;
    padding-top: 18px;
    border-top: 1px solid #edf0f3;
    color: #9298a3;
    font-size: 12px;
    line-height: 1.9;
}

.auth-dialog-terms a {
    color: #85613c;
    text-decoration: none;
}

.auth-dialog-terms a:hover,
.auth-dialog-account a:hover {
    text-decoration: underline;
    text-underline-offset: 3px;
}

.auth-dialog a:focus-visible,
.auth-dialog button:focus-visible {
    outline: 2px solid #bd8755;
    outline-offset: 3px;
}

@keyframes auth-qr-loading {
    to { transform: rotate(360deg); }
}

@media (max-width: 479.98px) {
    .auth-dialog {
        padding: 16px;
    }

    .auth-dialog .content {
        max-height: calc(100vh - 32px);
        max-height: calc(100dvh - 32px);
        padding: 32px 20px 22px;
        border-radius: 16px;
    }

    .auth-dialog-heading {
        font-size: 24px;
    }

    .auth-dialog-description {
        font-size: 13px;
    }
}

@media (prefers-reduced-motion: reduce) {
    .auth-dialog,
    .auth-dialog .content {
        transition: none;
    }

    .auth-dialog-spinner {
        animation: none;
    }
}