/* ==========================================================================
   留歌主题 - 登录/注册/找回密码页面 v2.3.1
   通用极简版：居中单卡片 + 中性配色，无品牌封面/分组装饰，任何站点装上即用
   买家自定义主题色：只需修改下面 --lg-primary / --lg-primary-rgb 两个变量
   结构：lg-auth-* 为页面骨架；lar-* 为表单内部类名（兼容 login-form.php）
   ========================================================================== */

/* ==================== 0. 页面基底 ==================== */
html, body.lg-auth-body {
    height: auto;
    min-height: 100%;
    margin: 0;
}

body.lg-auth-body {
    -webkit-font-smoothing: antialiased;
    text-rendering: optimizeLegibility;
}

/* ==================== 1. 全屏容器与背景 ==================== */
.lg-auth-page {
    /* 主题色变量：买家改色只动这两行（rgb 变量用于带透明度的场景） */
    --lg-primary: #475569;
    --lg-primary-rgb: 71, 85, 105;

    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 32px 20px;
    overflow: hidden;
    /* 极简中性浅灰背景，无渐变光斑 */
    background: #f3f4f6;
    background-size: cover;
    background-position: center;
}

/* 图片背景模式：白色柔化遮罩保证卡片可读 */
.lg-auth-page.lg-bg-img {
    background-size: cover !important;
    background-position: center !important;
}
.lg-auth-page.lg-bg-img::before {
    content: '';
    position: absolute;
    inset: 0;
    background: rgba(243,244,246,.82);
    z-index: 0;
    pointer-events: none;
}
[data-bs-theme="dark"] .lg-auth-page.lg-bg-img::before {
    background: rgba(18,21,27,.86);
}

/* 暗色模式 */
[data-bs-theme="dark"] .lg-auth-page {
    --lg-primary: #93a3bd;
    --lg-primary-rgb: 147, 163, 189;

    background: #12151b;
}

/* ==================== 2. 返回首页 ==================== */
.lg-auth-back {
    position: fixed;
    top: 22px;
    left: 24px;
    z-index: 20;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 16px;
    font-size: .82rem;
    font-weight: 600;
    color: #475569 !important;
    background: rgba(255,255,255,.85);
    border: 1px solid #e5e9f0;
    border-radius: 999px;
    text-decoration: none !important;
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    box-shadow: 0 2px 8px rgba(17,24,39,.06);
    transition: color .2s, border-color .2s, box-shadow .2s, transform .2s;
}
.lg-auth-back:hover {
    color: var(--lg-primary) !important;
    border-color: rgba(var(--lg-primary-rgb),.4);
    box-shadow: 0 4px 14px rgba(var(--lg-primary-rgb),.16);
    transform: translateX(-2px);
}
[data-bs-theme="dark"] .lg-auth-back {
    color: #cbd5e1 !important;
    background: rgba(30,37,52,.85);
    border-color: #2c3448;
}
[data-bs-theme="dark"] .lg-auth-back:hover { color: var(--lg-primary) !important; border-color: rgba(var(--lg-primary-rgb),.45); }

/* ==================== 3. 单卡片外壳（居中，通用简洁） ==================== */
.lg-auth-shell {
    position: relative;
    z-index: 1;
    width: 100%;
    max-width: 420px;
    border-radius: 14px;
    border: 1px solid #e9ebef;
    overflow: hidden;
    background: #fff;
    box-shadow: 0 1px 2px rgba(17,24,39,.04), 0 12px 32px -12px rgba(17,24,39,.12);
    animation: lg-pop .4s cubic-bezier(.2,.75,.3,1);
}
@keyframes lg-pop {
    from { opacity: 0; transform: translateY(12px); }
    to   { opacity: 1; transform: translateY(0); }
}
[data-bs-theme="dark"] .lg-auth-shell {
    background: #1a1f29;
    border-color: #2a313e;
    box-shadow: 0 1px 2px rgba(0,0,0,.3), 0 12px 32px -12px rgba(0,0,0,.5);
}

/* ==================== 4. 表单区 ==================== */
.lg-auth-panel {
    background: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 36px 40px 32px;
}
[data-bs-theme="dark"] .lg-auth-panel { background: #1a1f29; }

.lg-auth-card { width: 100%; }

/* 头部：Logo / 站名 + 标题 */
.lg-auth-head { text-align: center; margin-bottom: 20px; }
.lg-auth-logo {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    line-height: 0;
    margin-bottom: 14px;
    text-decoration: none !important;
    max-width: 100%;
}
.lg-auth-logo img {
    max-height: 46px;
    max-width: 220px;
    object-fit: contain;
}
.lg-auth-logo-text {
    display: inline-block;
    line-height: 1.25;
    font-size: 1.3rem;
    font-weight: 800;
    letter-spacing: .2px;
    color: #1e293b;
    padding: 6px 14px;
    border-radius: 10px;
    background: rgba(var(--lg-primary-rgb),.08);
}
[data-bs-theme="dark"] .lg-auth-logo-text { color: #f1f5f9; background: rgba(var(--lg-primary-rgb),.14); }
.lg-auth-title {
    font-size: 1.42rem;
    font-weight: 800;
    margin: 0 0 6px;
    letter-spacing: -.2px;
    color: #1e293b;
}
[data-bs-theme="dark"] .lg-auth-title { color: #f1f5f9; }
.lg-auth-subtitle { font-size: .84rem; color: #64748b; margin: 0; }
[data-bs-theme="dark"] .lg-auth-subtitle { color: #94a3b8; }

/* ==================== 6. 页签 ==================== */
.lg-auth-tabs {
    display: flex;
    gap: 6px;
    background: #f1f3f5;
    border-radius: 9px;
    padding: 4px;
    margin-bottom: 22px;
}
[data-bs-theme="dark"] .lg-auth-tabs { background: #232833; }
.lg-auth-tab {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 7px;
    padding: 8px 6px;
    font-size: .85rem;
    font-weight: 600;
    color: #64748b;
    border-radius: 6px;
    text-decoration: none !important;
    transition: all .2s;
}
[data-bs-theme="dark"] .lg-auth-tab { color: #94a3b8; }
.lg-auth-tab:hover { color: var(--lg-primary); }
.lg-auth-tab.active {
    color: #fff;
    background: var(--lg-primary);
    box-shadow: none;
}
.lg-auth-tab i { font-size: .82rem; }

/* ==================== 7. 表单通用 ==================== */
.lg-auth-content .form-label {
    display: block;
    font-size: .8rem;
    font-weight: 600;
    color: #374151;
    margin-bottom: 6px;
}
[data-bs-theme="dark"] .lg-auth-content .form-label { color: #cbd5e1; }

.lg-auth-content .text-muted { color: #94a3b8 !important; font-size: .74rem; }
.lg-auth-content .mb-3 { margin-bottom: 15px; }
.lg-auth-content .mb-1 { margin-bottom: 4px; }

.lg-auth-content .form-control {
    width: 100%;
    height: 42px;
    padding: 0 13px;
    font-size: .88rem;
    color: #1f2937;
    background: #fff;
    border: 1px solid #d9dde3;
    border-radius: 8px;
    transition: border-color .2s, box-shadow .2s;
    box-shadow: none !important;
}
[data-bs-theme="dark"] .lg-auth-content .form-control {
    color: #e5e9f0;
    background: #20262f;
    border-color: #323a47;
}
.lg-auth-content .form-control::placeholder { color: #9aa3af; }
.lg-auth-content .form-control:focus {
    background: #fff;
    border-color: var(--lg-primary) !important;
    box-shadow: 0 0 0 3px rgba(var(--lg-primary-rgb),.12) !important;
    outline: none;
}
[data-bs-theme="dark"] .lg-auth-content .form-control:focus {
    background: #20262f;
    border-color: var(--lg-primary) !important;
    box-shadow: 0 0 0 3px rgba(var(--lg-primary-rgb),.16) !important;
}

/* 带图标输入框 */
.lg-auth-content .lar-input-wrap { position: relative; }
.lg-auth-content .lar-input-icon {
    position: absolute;
    left: 8px;
    top: 50%;
    transform: translateY(-50%);
    width: 28px;
    height: 28px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: 8px;
    font-size: .78rem;
    color: var(--lg-primary) !important;
    pointer-events: none;
    z-index: 2;
    background: rgba(var(--lg-primary-rgb),.10);
    transition: background .25s, color .25s, box-shadow .25s;
}
.lg-auth-content .lar-input-wrap:focus-within .lar-input-icon {
    color: #fff !important;
    background: linear-gradient(135deg, var(--lg-primary), var(--lg-primary));
    box-shadow: 0 3px 10px rgba(var(--lg-primary-rgb),.32);
}
[data-bs-theme="dark"] .lg-auth-content .lar-input-icon { color: var(--lg-primary) !important; background: rgba(var(--lg-primary-rgb),.14); }
[data-bs-theme="dark"] .lg-auth-content .lar-input-wrap:focus-within .lar-input-icon { color: #fff !important; }
.lg-auth-content .lar-input-wrap .form-control {
    padding-left: 45px;
    padding-right: 42px;
}

/* 密码眼睛 */
.lg-auth-content .lar-pwd-toggle {
    position: absolute;
    right: 8px;
    top: 50%;
    transform: translateY(-50%);
    width: 30px;
    height: 30px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: transparent;
    border: none;
    color: #94a3b8;
    cursor: pointer;
    border-radius: 8px;
    font-size: .82rem;
    z-index: 3;
    transition: color .2s, background .2s;
}
.lg-auth-content .lar-pwd-toggle:hover { color: var(--lg-primary); background: rgba(var(--lg-primary-rgb),.10); }
[data-bs-theme="dark"] .lg-auth-content .lar-pwd-toggle:hover { color: var(--lg-primary); background: rgba(var(--lg-primary-rgb),.12); }

/* ==================== 9. 验证码 input-group ==================== */
.lg-auth-content .input-group { display: flex; gap: 8px; }
.lg-auth-content .input-group .form-control { flex: 1; border-radius: 10px !important; }
.lg-auth-content .input-group .btn {
    flex: 0 0 auto;
    white-space: nowrap;
    height: 44px;
    padding: 0 15px;
    font-size: .8rem;
    font-weight: 600;
    border-radius: 10px !important;
    border: 1.5px solid rgba(var(--lg-primary-rgb),.55);
    color: var(--lg-primary);
    background: rgba(var(--lg-primary-rgb),.06);
    cursor: pointer;
    transition: all .2s;
}
.lg-auth-content .input-group .btn:hover { background: var(--lg-primary); color: #fff; border-color: var(--lg-primary); }
.lg-auth-content .input-group .btn:disabled { opacity: .55; cursor: not-allowed; }
[data-bs-theme="dark"] .lg-auth-content .input-group .btn {
    background: rgba(var(--lg-primary-rgb),.08);
    color: var(--lg-primary);
    border-color: rgba(var(--lg-primary-rgb),.45);
}

/* 图形验证码图片 */
.lg-auth-content .input-group img.captcha-img,
.lg-auth-content .input-group img {
    height: 44px;
    border-radius: 9px;
    cursor: pointer;
    border: 1.5px solid #e5e9f0;
}

/* ==================== 10. 密码强度 ==================== */
.lg-auth-content .lar-pwd-strength {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-top: 8px;
}
.lg-auth-content .lar-pwd-bar { display: inline-flex; gap: 4px; }
.lg-auth-content .lar-pwd-bar i {
    display: inline-block;
    width: 32px;
    height: 4px;
    border-radius: 2px;
    background: #e5e9f0;
    transition: background .25s;
}
.lg-auth-content .lar-pwd-bar.lv1 i:nth-child(1) { background: #ef4444; }
.lg-auth-content .lar-pwd-bar.lv2 i:nth-child(-n+2) { background: #f59e0b; }
.lg-auth-content .lar-pwd-bar.lv3 i { background: #10b981; }
.lg-auth-content .lar-pwd-label { font-size: .72rem; color: #94a3b8; }

/* ==================== 11. 记住我 / 协议勾选 ==================== */
.lg-auth-content .lar-remember-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin: 2px 0 14px;
}
.lg-auth-content .lar-forgot-link { font-size: .78rem; color: var(--lg-primary); text-decoration: none !important; }
.lg-auth-content .lar-forgot-link:hover { text-decoration: underline !important; }

.lg-auth-content .form-check { display: inline-flex; align-items: center; gap: 7px; cursor: pointer; }
.lg-auth-content .form-check-input { width: 15px; height: 15px; accent-color: var(--lg-primary); cursor: pointer; margin: 0; }
/* 覆盖 Bootstrap 默认蓝色勾选态（极简中性主色） */
.lg-auth-content .form-check-input:checked,
.lg-auth-content .form-check-input[checked] { background-color: var(--lg-primary) !important; border-color: var(--lg-primary) !important; }
.lg-auth-content .form-check-input:focus { border-color: var(--lg-primary); box-shadow: 0 0 0 3px rgba(var(--lg-primary-rgb),.15); }
.lg-auth-content .form-check-input:focus:not(:checked) { border-color: #94a3b8; }
.lg-auth-content .form-check-label { font-size: .8rem; color: #64748b; cursor: pointer; }
[data-bs-theme="dark"] .lg-auth-content .form-check-label { color: #94a3b8; }

.lg-auth-content .lar-agreement-row {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 4px;
    font-size: .78rem;
    color: #64748b;
    margin: 4px 0 14px;
    /* 覆盖全局 custom-ui-enhance 的淡紫底色卡片（极简风改为透明平铺） */
    padding: 0;
    background: none;
    border: none;
}
.lg-auth-content .lar-check { display: inline-flex; align-items: center; gap: 7px; cursor: pointer; margin: 0; }
.lg-auth-content .lar-check-input { position: absolute; opacity: 0; width: 0; height: 0; }
.lg-auth-content .lar-check-box {
    width: 16px;
    height: 16px;
    border: 1.5px solid #cbd5e1;
    border-radius: 4px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: .6rem;
    color: #fff;
    transition: all .2s;
    flex: 0 0 16px;
}
.lg-auth-content .lar-check-box i { opacity: 0; transform: scale(.5); transition: all .2s; }
.lg-auth-content .lar-check-input:checked + .lar-check-box {
    background: linear-gradient(135deg, var(--lg-primary), var(--lg-primary));
    border-color: transparent;
}
.lg-auth-content .lar-check-input:checked + .lar-check-box i { opacity: 1; transform: scale(1); }
.lg-auth-content .lar-check-link { color: var(--lg-primary); text-decoration: none !important; }
.lg-auth-content .lar-check-link:hover { text-decoration: underline !important; }

/* ==================== 12. 链接行 / 提示条 ==================== */
.lg-auth-content .lar-link-row {
    text-align: center;
    font-size: .82rem;
    color: #64748b;
}
[data-bs-theme="dark"] .lg-auth-content .lar-link-row { color: #94a3b8; }
.lg-auth-content .lar-link-row a { color: var(--lg-primary); font-weight: 600; text-decoration: none !important; }
.lg-auth-content .lar-link-row a:hover { text-decoration: underline !important; }

.lg-auth-content .lar-reset-hint {
    display: flex;
    align-items: center;
    gap: 7px;
    font-size: .78rem;
    color: #92400e;
    background: #fffbeb;
    border: 1px solid #fde68a;
    border-radius: 10px;
    padding: 10px 13px;
    margin: 0 0 15px;
    line-height: 1.5;
}
[data-bs-theme="dark"] .lg-auth-content .lar-reset-hint {
    color: #fcd34d;
    background: rgba(245,158,11,.08);
    border-color: rgba(245,158,11,.25);
}

.lg-auth-content .lar-disabled-notice {
    text-align: center;
    padding: 36px 20px;
    color: #64748b;
}
.lg-auth-content .lar-disabled-notice i { font-size: 2.1rem; color: #cbd5e1; margin-bottom: 12px; display: block; }
.lg-auth-content .lar-disabled-notice p { margin: 0; font-size: .9rem; }

/* ==================== 13. 提交按钮（中性主色） ==================== */
.lg-auth-content .lar-btn-submit {
    width: 100%;
    height: 44px;
    border: none;
    border-radius: 9px;
    font-size: .9rem;
    font-weight: 600;
    color: #fff;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    transition: background .2s, box-shadow .2s, opacity .2s;
    letter-spacing: .3px;
    /* 覆盖全局 custom-ui-enhance：去呼吸光晕/悬浮位移/扫光（极简扁平） */
    position: static;
    overflow: visible;
    transform: none !important;
    box-shadow: none !important;
    animation: none !important;
}
.lg-auth-content .lar-btn-submit::after { display: none !important; }
.lg-auth-content .lar-btn-submit i { transform: none !important; }
.lg-auth-content .lar-btn-submit-primary {
    background: var(--lg-primary);
    box-shadow: none;
}
.lg-auth-content .lar-btn-submit-primary:hover { background: #334155; }
[data-bs-theme="dark"] .lg-auth-content .lar-btn-submit-primary:hover { background: #aab7cc; color: #1a1f29; }
.lg-auth-content .lar-btn-submit-danger {
    background: #ef4444;
    box-shadow: none;
}
.lg-auth-content .lar-btn-submit-danger:hover { background: #dc2626; }
.lg-auth-content .lar-btn-submit:hover { opacity: 1; }
.lg-auth-content .lar-btn-submit:disabled { opacity: .55; cursor: not-allowed; }

/* ==================== 14. 分隔线与第三方登录 ==================== */
.lg-auth-content .lar-divider {
    position: relative;
    text-align: center;
    margin: 20px 0 14px;
}
.lg-auth-content .lar-divider::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 0;
    right: 0;
    height: 1px;
    background: #e5e9f0;
}
[data-bs-theme="dark"] .lg-auth-content .lar-divider::before { background: #2c3448; }
.lg-auth-content .lar-divider span {
    position: relative;
    background: #fff;
    padding: 0 14px;
    font-size: .74rem;
    color: #94a3b8;
}
[data-bs-theme="dark"] .lg-auth-content .lar-divider span { background: #1a1f29; }

.lg-auth-content .lar-social { display: flex; gap: 10px; }
.lg-auth-content .lar-social-btn {
    flex: 1;
    height: 42px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    border-radius: 10px;
    font-size: .84rem;
    font-weight: 600;
    color: #fff !important;
    text-decoration: none !important;
    transition: transform .2s, box-shadow .2s, filter .2s;
}
.lg-auth-content .lar-social-btn:hover { transform: translateY(-1px); filter: brightness(1.06); color: #fff; }
.lg-auth-content .lar-social-qq { background: linear-gradient(135deg, #2795ee, #126fd4); box-shadow: 0 5px 14px rgba(39,149,238,.28); }
.lg-auth-content .lar-social-wx { background: linear-gradient(135deg, #22c55e, #15a34a); box-shadow: 0 5px 14px rgba(34,197,94,.28); }

/* ==================== 15. 底部版权 ==================== */
.lg-auth-content .lar-foot {
    text-align: center;
    margin-top: 18px;
    font-size: .72rem;
    color: #94a3b8;
    line-height: 1.7;
}
.lg-auth-content .lar-foot p { margin: 0; }
.lg-auth-content .lar-foot a { color: #94a3b8; text-decoration: none !important; }
.lg-auth-content .lar-foot a:hover { color: var(--lg-primary); }

/* ==================== 16. 响应式 ==================== */
@media (max-width: 480px) {
    .lg-auth-page { padding: 16px 12px; align-items: flex-start; }
    .lg-auth-shell { border-radius: 16px; }
    .lg-auth-panel { padding: 28px 20px 24px; }
    .lg-auth-logo img { max-height: 40px; max-width: 180px; }
    .lg-auth-title { font-size: 1.28rem; }
    .lg-auth-back { top: 14px; left: 14px; padding: 7px 13px; font-size: .76rem; }
    .lg-auth-content .lar-social { flex-direction: column; }
}

/* ==================== 17. 减少动画偏好 ==================== */
@media (prefers-reduced-motion: reduce) {
    .lg-auth-page::before,
    .lg-auth-page::after,
    .lg-auth-shell { animation: none !important; }
}