/* 登录与注册页 */
.auth-shell {
    display: grid;
    justify-items: center;
    padding: 32px 0 44px;
}

.auth-card {
    width: min(100%, 680px);
}

.auth-card-wide {
    width: min(100%, 720px);
}

.auth-card h1 {
    margin: 0;
    font-size: clamp(28px, 4vw, 36px);
    line-height: 1.2;
}

.auth-card > p {
    margin: 10px 0 0;
    color: var(--muted);
}

.auth-mode-switch {
    display: inline-grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 10px;
    width: 100%;
    margin-top: 18px;
    padding: 8px;
    border: 1px solid var(--line);
    border-radius: 16px;
    background: var(--surface-soft);
}

.auth-mode-btn {
    min-height: 42px;
    padding: 0 14px;
    border-radius: 12px;
    background: transparent;
    color: var(--muted);
    cursor: pointer;
    transition: all var(--transition);
}

.auth-mode-btn.active {
    background: #fff;
    color: var(--brand-deep);
    box-shadow: 0 8px 18px rgba(15, 23, 42, 0.06);
}

.auth-mode-panel {
    margin-top: 20px;
}

.send-code-btn {
    min-width: 120px;
}

.auth-script-message {
    margin-top: 8px;
}

.scan-login-card {
    width: min(100%, 520px);
    padding: 38px 44px;
    border: 1px solid var(--line);
    border-radius: 24px;
    background: #fff;
    box-shadow: 0 22px 60px rgba(15, 23, 42, .08);
    text-align: center;
}

.scan-code-shell {
    display: grid;
    width: 260px;
    height: 260px;
    place-items: center;
    margin: 28px auto 18px;
    overflow: hidden;
    border: 1px solid #e8ecef;
    border-radius: 20px;
    background: #f8faf9;
}

.scan-code-image {
    width: 236px;
    height: 236px;
    object-fit: contain;
}

.scan-code-loading {
    color: var(--muted);
    font-size: 14px;
}

.scan-code-refresh {
    width: 100%;
    height: 100%;
    padding: 0 42px;
    border: 0;
    color: var(--brand-deep);
    font-size: 15px;
    background: #f1faf6;
    cursor: pointer;
}

.scan-login-status {
    color: #46515d;
    font-size: 16px;
    font-weight: 650;
}

.scan-login-status[data-state="active"] { color: #7654d8; }
.scan-login-status[data-state="success"] { color: #13945e; }
.scan-login-status[data-state="error"] { color: #d54949; }

.scan-login-tip,
.scan-login-agreement {
    margin: 10px 0 0 !important;
    color: #8a939d !important;
    font-size: 13px;
    line-height: 1.65;
}

.scan-login-agreement a { color: var(--brand-deep); }

.scan-login-alternative {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    margin-top: 18px;
    color: var(--muted);
    font-size: 14px;
}

.scan-login-alternative a,
.auth-login-links a {
    color: var(--brand-deep);
    font-weight: 650;
}

.auth-login-links {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 18px;
    margin-top: 18px;
}

.auth-login-links .helper-text {
    margin: 0;
}

@media (max-width: 720px) {
    .auth-shell {
        padding: 20px 0 36px;
    }

    .auth-mode-switch {
        grid-template-columns: 1fr;
    }

    .send-code-btn {
        width: 100%;
    }

    .scan-login-card { padding: 30px 22px; }

    .auth-login-links {
        align-items: flex-start;
        flex-direction: column;
        gap: 8px;
    }
}