/* ── AJAX 登录弹窗（颜色写死，不依赖主题变量） ── */
.wk-auth-overlay {
    position: fixed;
    inset: 0;
    z-index: 11000;
    background: rgba(15, 15, 20, .5);
    backdrop-filter: blur(4px);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
    opacity: 0;
    transition: opacity .25s ease;
}
.wk-auth-overlay.open { opacity: 1; }

.wk-auth-modal {
    position: relative;
    width: 100%;
    max-width: 380px;
    background: #fff;
    border-radius: 14px;
    padding: 28px 24px 22px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, .25);
    transform: translateY(14px) scale(.98);
    transition: transform .3s cubic-bezier(.22, .8, .36, 1);
}
.wk-auth-overlay.open .wk-auth-modal { transform: none; }

.wk-auth-close {
    position: absolute;
    top: 10px;
    right: 12px;
    background: none;
    border: none;
    font-size: 20px;
    line-height: 1;
    color: #6b7280;
    cursor: pointer;
    padding: 4px;
}
.wk-auth-title { margin: 0 0 4px; font-size: 19px; font-weight: 800; color: #1e1b2e; }
.wk-auth-sub { margin: 0 0 18px; font-size: 13.5px; color: #6b7280; }

.wk-auth-form { display: flex; flex-direction: column; gap: 10px; }
.wk-auth-input {
    height: 46px;
    padding: 0 14px;
    border: 1.5px solid #e2e8f0;
    border-radius: 10px;
    font: inherit;
    font-size: 14.5px;
    color: #1e1b2e;
    background: #fff;
    outline: none;
    transition: border-color .15s;
}
.wk-auth-input:focus { border-color: var(--wk-purple, #8b5cf6); }
.wk-auth-error {
    background: #fdecec;
    color: #c53030;
    border: 1px solid #fbb5b5;
    border-radius: 8px;
    padding: 9px 12px;
    font-size: 13px;
    font-weight: 600;
}
.wk-auth-submit {
    height: 46px;
    margin-top: 4px;
    border: none;
    border-radius: 10px;
    background: var(--wk-purple, #8b5cf6);
    color: #fff;
    font: inherit;
    font-size: 15px;
    font-weight: 800;
    cursor: pointer;
    transition: opacity .15s;
}
.wk-auth-submit:hover { opacity: .92; }
.wk-auth-submit:disabled { opacity: .6; cursor: wait; }

.wk-auth-foot {
    margin: 16px 0 0;
    text-align: center;
    font-size: 13px;
    color: #6b7280;
}
.wk-auth-foot a { color: var(--wk-purple, #8b5cf6); font-weight: 700; text-decoration: none; }
.wk-auth-foot a:hover { text-decoration: underline; }

/* 手机端：底部弹出样式 */
@media (max-width: 768px) {
    .wk-auth-overlay { align-items: flex-end; padding: 0; }
    .wk-auth-modal {
        max-width: 100%;
        border-radius: 16px 16px 0 0;
        padding-bottom: calc(24px + env(safe-area-inset-bottom, 0px));
        transform: translateY(100%);
    }
    .wk-auth-overlay.open .wk-auth-modal { transform: none; }
}