/* ========== 设置弹窗、外观、壁纸、导入书签 ========== */
/* ==================== 设置大弹窗 ==================== */
/* 设置面板统一字号阶梯（PC 默认） */
#settingsModal {
    --fs-lg: 1.3rem;     /* 主标题 */
    --fs-md: 0.95rem;    /* 卡片标题 / 主要标签 / 按钮 */
    --fs-base: 0.9rem;   /* 正文 / 选项 / 输入框 */
    --fs-sm: 0.82rem;    /* 次要说明 / 面板标题 */
    --fs-xs: 0.76rem;    /* 提示 / 极小字 */
    --card-pad-y: 18px;
    --card-pad-x: 18px;
    --card-gap: 14px;
    --card-radius: 0.5rem;
}

#settingsModal .modal {
    background: var(--modal-bg);
    width: 100%;
    max-width: 720px;
    border-radius: 26px;
    padding: 28px 28px 24px;
    border: 1px solid var(--border-normal);
    box-shadow:
        0 0 0 1px rgba(255, 255, 255, 0.03) inset,
        0 30px 80px rgba(0, 0, 0, 0.7),
        0 8px 24px rgba(0, 0, 0, 0.35);
    animation: popIn 0.3s var(--ease-smooth) forwards;
    max-height: 90vh;
    display: flex;
    flex-direction: column;
    position: relative;
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
}
html.light-mode #settingsModal .modal {
    box-shadow:
        0 0 0 1px rgba(15, 23, 42, 0.04) inset,
        0 24px 64px rgba(15, 23, 42, 0.14),
        0 8px 20px rgba(15, 23, 42, 0.06);
}

.settings-header-top {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 18px;
    gap: 12px;
}
.settings-title-group h2 {
    font-size: var(--fs-lg);
    font-weight: 700;
    color: var(--text-main);
    margin-bottom: 3px;
    letter-spacing: -0.025em;
    line-height: 1.25;
}
.settings-title-group p {
    font-size: var(--fs-base);
    color: var(--text-sub);
    line-height: 1.45;
    letter-spacing: 0.01em;
}
.settings-close-btn {
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid var(--border-normal);
    color: var(--text-sub);
    cursor: pointer;
    padding: 8px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: color 0.2s, background 0.2s, border-color 0.2s, transform 0.15s;
}
.settings-close-btn:hover {
    color: var(--text-main);
    background: rgba(255, 255, 255, 0.08);
    border-color: rgba(255, 255, 255, 0.12);
}
.settings-close-btn:active {
    transform: scale(0.94);
}
html.light-mode .settings-close-btn {
    background: rgba(0, 0, 0, 0.03);
}
html.light-mode .settings-close-btn:hover {
    background: rgba(0, 0, 0, 0.06);
    border-color: rgba(0, 0, 0, 0.1);
}

/* 顶部横向 Tab 导航栏 —— Uiverse rude-mouse-79 分段控件风格 */
.settings-tabs-bar {
    position: relative;
    display: flex;
    flex-wrap: nowrap;
    align-items: stretch;
    box-sizing: border-box;
    background-color: rgba(255, 255, 255, 0.08);
    box-shadow: 0 0 0 1px rgba(0, 0, 0, 0.12);
    border-radius: 0.5rem;
    padding: 0.25rem;
    margin-bottom: 20px;
    overflow-x: auto;
    overflow-y: hidden;
    gap: 0;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
    flex-shrink: 0;
    min-height: 40px;
}
.settings-tabs-bar::-webkit-scrollbar {
    display: none;
}
html.light-mode .settings-tabs-bar {
    background-color: #eee;
    box-shadow: 0 0 0 1px rgba(0, 0, 0, 0.06);
}

.settings-tab-btn {
    flex: 1 1 auto;
    min-width: max-content;
    padding: 0.5rem 0.85rem;
    border: none;
    background: transparent;
    color: var(--text-sub);
    font-size: var(--fs-base);
    font-weight: 500;
    border-radius: 0.5rem;
    cursor: pointer;
    transition: all 0.15s ease-in-out;
    text-align: center;
    white-space: nowrap;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 5px;
    position: relative;
    letter-spacing: 0.01em;
}
.settings-tab-btn svg {
    width: 14px;
    height: 14px;
    flex-shrink: 0;
    opacity: 0.72;
    transition: opacity 0.15s, color 0.15s;
}
.settings-tab-btn.active {
    background-color: #fff;
    color: rgba(51, 65, 85, 1);
    font-weight: 600;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.08);
}
.settings-tab-btn.active svg {
    opacity: 1;
    color: var(--primary);
}
.settings-tab-btn:hover:not(.active) {
    color: var(--text-main);
}
.settings-tab-btn:hover:not(.active) svg {
    opacity: 1;
}
.settings-tab-btn:active:not(.active) {
    transform: scale(0.98);
}
/* 暗色模式下激活态用略亮的白底，保证对比度 */
html:not(.light-mode) .settings-tab-btn.active {
    background-color: rgba(255, 255, 255, 0.95);
    color: #1e293b;
    box-shadow: 0 1px 4px rgba(0, 0, 0, 0.2);
}
html.light-mode .settings-tab-btn.active {
    background-color: #fff;
    color: rgba(51, 65, 85, 1);
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.06);
}
html.light-mode .settings-tab-btn:hover:not(.active) {
    color: #334155;
}

/* 弹窗内部面板内容滚动区 */
.settings-body-content {
    flex: 1;
    overflow-y: auto;
    overflow-x: hidden;
    padding-right: 6px;
    padding-bottom: 6px;
    margin-right: -2px;
    scrollbar-width: thin;
    scrollbar-color: rgba(255, 255, 255, 0.12) transparent;
}
.settings-body-content::-webkit-scrollbar {
    width: 5px;
}
.settings-body-content::-webkit-scrollbar-thumb {
    background: rgba(255, 255, 255, 0.12);
    border-radius: 999px;
}
html.light-mode .settings-body-content {
    scrollbar-color: rgba(15, 23, 42, 0.15) transparent;
}
html.light-mode .settings-body-content::-webkit-scrollbar-thumb {
    background: rgba(15, 23, 42, 0.15);
}
.settings-panel {
    display: none;
}
.settings-panel.active {
    display: block;
    animation: settingsPanelIn 0.22s var(--ease-smooth);
}
@keyframes settingsPanelIn {
    from { opacity: 0; transform: translateY(6px); }
    to { opacity: 1; transform: translateY(0); }
}

.settings-panel-title {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: var(--fs-sm);
    color: var(--text-sub);
    margin: 0 0 14px 2px;
    font-weight: 600;
    letter-spacing: 0.04em;
    text-transform: none;
    line-height: 1.3;
}
.settings-panel-title::before {
    content: '';
    width: 3px;
    height: 12px;
    border-radius: 999px;
    background: linear-gradient(180deg, var(--primary), rgba(59, 130, 246, 0.35));
    flex-shrink: 0;
}

/* 设置内卡片：与 Tab 栏统一的分段控件风格 */
.settings-form-card {
    background-color: rgba(255, 255, 255, 0.08);
    border: none;
    border-radius: var(--card-radius, 0.5rem);
    padding: var(--card-pad-y, 18px) var(--card-pad-x, 18px);
    margin-bottom: 12px;
    display: flex;
    flex-direction: column;
    gap: var(--card-gap, 14px);
    box-shadow: 0 0 0 1px rgba(0, 0, 0, 0.12);
    transition: background-color 0.15s ease-in-out, box-shadow 0.15s ease-in-out;
}
.settings-form-card:last-child {
    margin-bottom: 4px;
}
.settings-form-card + .settings-form-card {
    margin-top: 0;
}
.settings-card-spaced {
    margin-top: 2px;
}

html.light-mode .settings-form-card {
    background-color: #eee;
    box-shadow: 0 0 0 1px rgba(0, 0, 0, 0.06);
}

/* 卡片内分区标题 */
.settings-card-heading {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: var(--fs-md);
    font-weight: 600;
    color: var(--text-main);
    letter-spacing: -0.01em;
    line-height: 1.3;
    margin: 0;
}
.settings-card-heading svg {
    width: 16px;
    height: 16px;
    opacity: 0.75;
    flex-shrink: 0;
    color: var(--primary);
}
.settings-card-sub {
    font-size: var(--fs-sm);
    color: var(--text-sub);
    line-height: 1.5;
    margin: -4px 0 0;
}

/* 主题模式下拉选择 */
.theme-mode-card {
    gap: 10px;
}
.theme-mode-label {
    font-size: var(--fs-md);
    font-weight: 600;
    color: var(--text-main);
    letter-spacing: -0.01em;
}
.theme-mode-select-wrap {
    position: relative;
    width: 100%;
}
.theme-mode-trigger {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    padding: 12px 14px;
    background: var(--modal-input-bg);
    border: 1px solid var(--border-normal);
    border-radius: 12px;
    color: var(--text-main);
    font-size: var(--fs-base);
    font-weight: 500;
    cursor: pointer;
    transition: border-color 0.2s, box-shadow 0.2s, background 0.2s;
}
.theme-mode-trigger:hover {
    border-color: var(--primary);
}
.theme-mode-trigger.open {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px var(--primary-glow);
}
.theme-mode-trigger-left {
    display: flex;
    align-items: center;
    gap: 10px;
    min-width: 0;
}
.theme-mode-icon {
    display: inline-flex;
    color: var(--text-sub);
    flex-shrink: 0;
}
.theme-mode-chevron {
    color: var(--text-sub);
    flex-shrink: 0;
    transition: transform 0.2s var(--ease-smooth);
}
.theme-mode-trigger.open .theme-mode-chevron {
    transform: rotate(180deg);
}
.theme-mode-dropdown {
    position: absolute;
    top: calc(100% + 8px);
    left: 0;
    right: 0;
    z-index: 20;
    background: var(--modal-bg);
    border: 1px solid var(--border-normal);
    border-radius: 12px;
    box-shadow: 0 16px 40px var(--shadow-color);
    padding: 6px;
    display: flex;
    flex-direction: column;
    gap: 2px;
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
}
.theme-mode-dropdown[hidden] {
    display: none;
}
.theme-mode-option {
    display: flex;
    align-items: center;
    gap: 10px;
    width: 100%;
    padding: 11px 12px;
    border: none;
    border-radius: 10px;
    background: transparent;
    color: var(--text-sub);
    font-size: var(--fs-base);
    font-weight: 500;
    cursor: pointer;
    text-align: left;
    transition: background 0.15s, color 0.15s;
}
.theme-mode-option:hover {
    background: var(--sidebar-item-hover);
    color: var(--text-main);
}
.theme-mode-option.active {
    background: var(--primary-glow);
    color: var(--primary);
    font-weight: 600;
}
.theme-mode-option svg {
    flex-shrink: 0;
    opacity: 0.85;
}

/* ========== 壁纸模式 ========== */
.wallpaper-card {
    gap: 12px;
}
/* 首页布局切换 —— 与 Tab 栏统一 */
.home-layout-card {
    margin-bottom: 12px;
    gap: 10px;
}
.home-layout-tabs {
    display: flex;
    gap: 0;
    padding: 0.25rem;
    background-color: rgba(255, 255, 255, 0.08);
    box-shadow: 0 0 0 1px rgba(0, 0, 0, 0.12);
    border: none;
    border-radius: 0.5rem;
}
html.light-mode .home-layout-tabs {
    background-color: #eee;
    box-shadow: 0 0 0 1px rgba(0, 0, 0, 0.06);
}
.home-layout-btn {
    flex: 1;
    padding: 0.5rem 0.75rem;
    border: none;
    border-radius: 0.5rem;
    background: transparent;
    color: var(--text-sub);
    font-size: var(--fs-base);
    font-weight: 500;
    cursor: pointer;
    transition: all 0.15s ease-in-out;
    white-space: nowrap;
}
.home-layout-btn:hover {
    color: var(--text-main);
}
.home-layout-btn.active {
    background-color: #fff;
    color: rgba(51, 65, 85, 1);
    font-weight: 600;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.08);
}
html:not(.light-mode) .home-layout-btn.active {
    background-color: rgba(255, 255, 255, 0.95);
    color: #1e293b;
    box-shadow: 0 1px 4px rgba(0, 0, 0, 0.2);
}
html.light-mode .home-layout-btn.active {
    background-color: #fff;
    color: rgba(51, 65, 85, 1);
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.06);
}
.home-layout-desc {
    margin: 4px 0 0;
    font-size: var(--fs-sm);
    color: var(--text-sub);
    line-height: 1.5;
}

.wallpaper-mode-tabs {
    display: flex;
    gap: 0;
    padding: 0.25rem;
    background-color: rgba(255, 255, 255, 0.08);
    box-shadow: 0 0 0 1px rgba(0, 0, 0, 0.12);
    border: none;
    border-radius: 0.5rem;
}
html.light-mode .wallpaper-mode-tabs {
    background-color: #eee;
    box-shadow: 0 0 0 1px rgba(0, 0, 0, 0.06);
}
.wallpaper-mode-btn {
    flex: 1;
    padding: 0.45rem 0.65rem;
    border: none;
    border-radius: 0.5rem;
    background: transparent;
    color: var(--text-sub);
    font-size: var(--fs-base);
    font-weight: 500;
    cursor: pointer;
    transition: all 0.15s ease-in-out;
    white-space: nowrap;
}
.wallpaper-mode-btn:hover {
    color: var(--text-main);
}
.wallpaper-mode-btn.active {
    background-color: #fff;
    color: rgba(51, 65, 85, 1);
    font-weight: 600;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.08);
}
html:not(.light-mode) .wallpaper-mode-btn.active {
    background-color: rgba(255, 255, 255, 0.95);
    color: #1e293b;
    box-shadow: 0 1px 4px rgba(0, 0, 0, 0.2);
}
html.light-mode .wallpaper-mode-btn.active {
    background-color: #fff;
    color: rgba(51, 65, 85, 1);
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.06);
}
.wallpaper-cache-bar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    padding: 12px 14px;
    background: var(--modal-input-bg);
    border: 1px solid var(--border-normal);
    border-radius: 12px;
}
.wallpaper-cache-info {
    display: flex;
    align-items: center;
    gap: 10px;
    min-width: 0;
    color: var(--text-sub);
    font-size: var(--fs-base);
}
.wallpaper-cache-icon {
    display: inline-flex;
    color: var(--text-sub);
    flex-shrink: 0;
    opacity: 0.8;
}
#wallpaperCacheText {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}
.wallpaper-refresh-btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    flex-shrink: 0;
    padding: 7px 12px;
    border: 1px solid var(--border-normal);
    border-radius: 10px;
    background: transparent;
    color: var(--text-main);
    font-size: var(--fs-base);
    font-weight: 500;
    cursor: pointer;
    transition: border-color 0.18s, background 0.18s, color 0.18s;
}
.wallpaper-refresh-btn:hover {
    border-color: var(--primary);
    color: var(--primary);
    background: var(--primary-glow);
}
.wallpaper-refresh-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}
.wallpaper-mode-panel {
    display: flex;
    flex-direction: column;
    gap: 10px;
}
.wallpaper-mode-panel[hidden] {
    display: none;
}
.wallpaper-hint {
    margin: 0;
    font-size: var(--fs-sm);
    color: var(--text-sub);
    line-height: 1.5;
}
.wallpaper-hint code {
    font-size: 0.9em;
    padding: 1px 5px;
    border-radius: 4px;
    background: var(--icon-bg);
    color: var(--text-main);
}
.wallpaper-field-label {
    font-size: var(--fs-sm);
    font-weight: 600;
    color: var(--text-main);
    letter-spacing: 0.01em;
}
.wallpaper-input-row {
    display: flex;
    gap: 8px;
    align-items: center;
}
.wallpaper-input-row .settings-control {
    flex: 1;
    min-width: 0;
}
.wallpaper-apply-btn {
    flex-shrink: 0;
    border-radius: 10px !important;
    padding: 10px 16px !important;
    font-size: var(--fs-base) !important;
}

.wallpaper-upload-box {
    display: flex;
    flex-direction: column;
    gap: 10px;
    padding: 14px 16px;
    background: var(--modal-input-bg);
    border: 1px solid var(--border-normal);
    border-radius: 12px;
}
.wallpaper-upload-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 10px;
}
.wallpaper-upload-title {
    font-size: var(--fs-md);
    font-weight: 600;
    color: var(--primary, #3b82f6);
}
.wallpaper-upload-support {
    font-size: var(--fs-sm);
    color: var(--text-sub);
    white-space: nowrap;
}
.wallpaper-upload-desc {
    margin: 0;
    font-size: var(--fs-sm);
    color: var(--text-sub);
    line-height: 1.45;
}
.wallpaper-upload-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    width: 100%;
    padding: 12px 16px;
    border: 1px solid var(--border-normal);
    border-radius: 10px;
    background: var(--bg-dark, #0f172a);
    color: var(--text-main);
    font-size: var(--fs-base);
    font-weight: 500;
    cursor: pointer;
    transition: border-color 0.18s, background 0.18s, color 0.18s;
}
.wallpaper-upload-btn:hover {
    border-color: var(--primary);
    color: var(--primary);
    background: var(--primary-glow, rgba(59, 130, 246, 0.12));
}
html.light-mode .wallpaper-upload-btn {
    background: #f8fafc;
}
html.light-mode .wallpaper-upload-btn:hover {
    background: rgba(59, 130, 246, 0.08);
}

/* body 壁纸状态：黑色遮罩暗化（深度由 --wallpaper-mask-opacity 控制，与「遮罩暗化」滑块联动） */
body.has-wallpaper {
    background-image:
        linear-gradient(
            rgba(0, 0, 0, var(--wallpaper-mask-opacity, 0.10)),
            rgba(0, 0, 0, var(--wallpaper-mask-opacity, 0.10))
        ),
        var(--wallpaper-image);
    background-size: cover, cover;
    background-position: center, center;
    background-repeat: no-repeat, no-repeat;
    background-attachment: fixed, fixed;
}
/* 浅色模式同样用黑色压暗，避免白蒙层把壁纸洗白 */
html.light-mode body.has-wallpaper {
    background-image:
        linear-gradient(
            rgba(0, 0, 0, var(--wallpaper-mask-opacity, 0.10)),
            rgba(0, 0, 0, var(--wallpaper-mask-opacity, 0.10))
        ),
        var(--wallpaper-image);
}

/* 按设备方向微调壁纸构图（竖屏偏上，横屏居中） */
body.has-wallpaper[data-device-orient="portrait"] {
    background-position: center, center top;
}
body.has-wallpaper[data-device-orient="landscape"] {
    background-position: center, center;
}
@media (max-width: 1024px) {
    body.has-wallpaper {
        /* iOS 上 fixed 易异常，改用 scroll */
        background-attachment: scroll, scroll;
    }
}


/* 强调色：预设 + 自定义 */
.accent-color-card {
    gap: 14px;
    padding: 16px 18px;
}
.accent-swatch-row {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    align-items: center;
}
.accent-swatch {
    width: 34px;
    height: 34px;
    border-radius: 50%;
    border: 3px solid transparent;
    cursor: pointer;
    padding: 0;
    position: relative;
    transition: transform 0.18s var(--ease-smooth), box-shadow 0.18s, border-color 0.18s;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.22);
    flex-shrink: 0;
}
.accent-swatch:hover {
    transform: scale(1.08);
}
.accent-swatch.active {
    border-color: #fff;
    box-shadow: 0 0 0 2px var(--text-main), 0 2px 10px rgba(0, 0, 0, 0.28);
}
html.light-mode .accent-swatch.active {
    border-color: #fff;
    box-shadow: 0 0 0 2px rgba(15, 23, 42, 0.55), 0 2px 10px rgba(0, 0, 0, 0.12);
}
.accent-custom-block {
    display: flex;
    flex-direction: column;
    gap: 10px;
    padding-top: 4px;
    border-top: 1px solid var(--border-normal);
    margin-top: 2px;
}
.accent-custom-row {
    display: flex;
    align-items: center;
    gap: 12px;
}
.accent-color-picker-wrap {
    width: 40px;
    height: 40px;
    border-radius: 10px;
    overflow: hidden;
    border: 1px solid var(--border-normal);
    cursor: pointer;
    flex-shrink: 0;
    position: relative;
    background: var(--primary);
}
.accent-color-picker-wrap input[type="color"] {
    position: absolute;
    inset: -4px;
    width: calc(100% + 8px);
    height: calc(100% + 8px);
    border: none;
    padding: 0;
    cursor: pointer;
    opacity: 0;
}
.accent-hex-input {
    flex: 1;
    min-width: 0;
    font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
    font-size: var(--fs-base);
    letter-spacing: 0.02em;
}
.accent-preview-row {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}
.accent-preview-chip {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 8px 14px;
    border-radius: 10px;
    font-size: var(--fs-sm);
    font-weight: 600;
    font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
    border: 1px solid var(--border-normal);
    min-height: 36px;
}
.accent-preview-light {
    background: #ffffff;
    color: var(--primary);
}
.accent-preview-dark {
    background: #0f172a;
    color: var(--primary);
}
.accent-contrast-warn {
    margin: 0;
    font-size: var(--fs-sm);
    line-height: 1.45;
    color: #f87171;
}
html.light-mode .accent-contrast-warn {
    color: #dc2626;
}

/* 外观滑块：遮罩暗化 / 卡片透明度 */
.appearance-slider-card {
    gap: 16px;
    padding: 16px 18px;
}
.appearance-slider-item {
    display: flex;
    flex-direction: column;
    gap: 8px;
}
.appearance-slider-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
}
.appearance-slider-title {
    font-size: var(--fs-md);
    font-weight: 600;
    color: var(--text-main);
    letter-spacing: -0.01em;
}
.appearance-slider-value {
    font-size: var(--fs-base);
    font-weight: 600;
    color: var(--text-sub);
    font-variant-numeric: tabular-nums;
    min-width: 2.6em;
    text-align: right;
}
.appearance-slider-desc {
    margin: 0;
    font-size: var(--fs-sm);
    color: var(--text-sub);
    line-height: 1.45;
    opacity: 0.88;
}
.appearance-slider {
    -webkit-appearance: none;
    appearance: none;
    width: 100%;
    height: 6px;
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.12);
    outline: none;
    cursor: pointer;
    margin: 2px 0 0;
}
html.light-mode .appearance-slider {
    background: rgba(15, 23, 42, 0.12);
}
.appearance-slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 18px;
    height: 18px;
    border-radius: 50%;
    background: #3b82f6;
    border: 2px solid #fff;
    box-shadow: 0 2px 8px rgba(59, 130, 246, 0.45);
    cursor: pointer;
    transition: transform 0.15s var(--ease-smooth), box-shadow 0.15s;
}
.appearance-slider::-webkit-slider-thumb:hover {
    transform: scale(1.08);
    box-shadow: 0 3px 12px rgba(59, 130, 246, 0.55);
}
.appearance-slider::-moz-range-thumb {
    width: 18px;
    height: 18px;
    border-radius: 50%;
    background: #3b82f6;
    border: 2px solid #fff;
    box-shadow: 0 2px 8px rgba(59, 130, 246, 0.45);
    cursor: pointer;
}
.appearance-slider::-moz-range-track {
    height: 6px;
    border-radius: 999px;
    background: transparent;
}

/* 导入浏览器书签卡片 */
.import-bookmarks-card {
    gap: 12px;
}
.import-bookmarks-header {
    display: flex;
    flex-direction: column;
    gap: 6px;
}
.import-bookmarks-title-row {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: var(--fs-md);
    font-weight: 600;
    color: var(--text-main);
    letter-spacing: -0.01em;
}
.import-bookmarks-title-row svg {
    opacity: 0.85;
    flex-shrink: 0;
}
.import-bookmarks-desc {
    font-size: var(--fs-sm);
    color: var(--text-sub);
    line-height: 1.5;
}
.import-bookmarks-actions {
    display: flex;
    gap: 10px;
    align-items: center;
}
.import-bookmarks-btn {
    flex: 1;
    justify-content: center;
}
.import-bookmarks-hint {
    font-size: var(--fs-sm);
    color: var(--text-sub);
    opacity: 0.88;
    line-height: 1.5;
}

/* 同步导入/导出 */
.sync-card {
    gap: 12px;
}
.sync-section-title {
    font-size: var(--fs-md);
    font-weight: 600;
    color: var(--text-main);
    letter-spacing: -0.01em;
}
.sync-card-desc {
    font-size: var(--fs-sm);
    color: var(--text-sub);
    line-height: 1.55;
}
.sync-card-desc code {
    font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
    font-size: 0.9em;
    padding: 1px 6px;
    border-radius: 6px;
    background: var(--input-bg);
    border: 1px solid var(--border-normal);
    color: var(--primary);
}
.sync-actions {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
    margin-top: 2px;
}
.sync-action-btn {
    flex: 1;
    min-width: 108px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    padding: 10px 14px;
    border-radius: 11px;
    border: 1px solid var(--border-normal);
    background: var(--modal-input-bg);
    color: var(--text-main);
    font-size: var(--fs-base);
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s var(--ease-smooth);
    box-shadow: none;
    letter-spacing: 0.01em;
}
.sync-action-btn:hover {
    border-color: var(--primary);
    color: var(--primary);
    background: var(--primary-glow);
    transform: translateY(-1px);
}
.sync-action-btn.primary {
    background: #ffffff;
    color: #09090b;
    border: none;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.18);
}
.sync-action-btn.primary:hover {
    opacity: 0.92;
    color: #09090b;
    background: #ffffff;
    transform: translateY(-1px);
}
html.light-mode .sync-action-btn.primary {
    background: #0f172a;
    color: #ffffff;
    box-shadow: 0 2px 10px rgba(15, 23, 42, 0.12);
}
html.light-mode .sync-action-btn.primary:hover {
    background: #0f172a;
    color: #ffffff;
    opacity: 0.92;
}
.sync-action-btn.danger {
    border-color: rgba(239, 68, 68, 0.4);
    color: #ef4444;
    background: rgba(239, 68, 68, 0.06);
}
.sync-action-btn.danger:hover {
    border-color: #ef4444;
    color: #fff;
    background: #ef4444;
}
.sync-card-hint {
    font-size: var(--fs-sm);
    color: var(--text-sub);
    line-height: 1.5;
    opacity: 0.9;
    padding-top: 2px;
}
.sync-card-hint code {
    font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
    font-size: 0.9em;
    padding: 0 4px;
    border-radius: 4px;
    background: var(--input-bg);
}
@media (max-width: 640px) {
    .sync-actions {
        flex-direction: column;
    }
    .sync-action-btn {
        width: 100%;
    }
}


/* ===== 自定义图标选择弹窗 ===== */
.icon-picker-modal {
    width: min(340px, 92vw);
    max-height: min(520px, 86vh);
    padding: 16px;
    background: #1a1a1e;
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 16px;
    display: flex;
    flex-direction: column;
    gap: 14px;
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.55);
}
html.light-mode .icon-picker-modal {
    background: #ffffff;
    border-color: var(--border-normal);
    box-shadow: 0 16px 40px rgba(0, 0, 0, 0.12);
}
.icon-picker-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 8px;
}
.icon-picker-header h3 {
    margin: 0;
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--text-main);
}
.icon-picker-upload {
    display: flex;
    flex-direction: column;
    gap: 8px;
}
.icon-picker-upload-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    width: 100%;
    padding: 10px 14px;
    border-radius: 10px;
    border: 1px solid rgba(255, 255, 255, 0.12);
    background: rgba(255, 255, 255, 0.06);
    color: var(--text-main);
    font-size: 0.875rem;
    font-weight: 500;
    cursor: pointer;
    transition: background 0.2s, border-color 0.2s;
}
.icon-picker-upload-btn:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: var(--primary);
}
html.light-mode .icon-picker-upload-btn {
    background: var(--modal-input-bg);
    border-color: var(--border-normal);
}
html.light-mode .icon-picker-upload-btn:hover {
    background: var(--sidebar-item-hover);
}
.icon-picker-hint {
    margin: 0;
    text-align: center;
    font-size: 0.75rem;
    color: var(--text-sub);
}
.icon-picker-grid {
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    gap: 6px;
    overflow-y: auto;
    max-height: 280px;
    padding: 2px;
}
.icon-picker-item {
    aspect-ratio: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 10px;
    border: 1px solid transparent;
    background: transparent;
    color: var(--text-sub);
    cursor: pointer;
    transition: background 0.15s, color 0.15s, border-color 0.15s;
    padding: 0;
}
.icon-picker-item:hover {
    background: rgba(255, 255, 255, 0.08);
    color: var(--text-main);
}
.icon-picker-item.active {
    border-color: var(--primary);
    background: var(--primary-glow);
    color: var(--primary);
}
html.light-mode .icon-picker-item:hover {
    background: var(--sidebar-item-hover);
}
.icon-picker-item svg {
    width: 20px;
    height: 20px;
    stroke: currentColor;
    fill: none;
    stroke-width: 1.8;
    stroke-linecap: round;
    stroke-linejoin: round;
}