/* ============================================================
   小奥工具箱 - 统一公共样式 tools.css
   专业 SaaS 风格：深色侧边栏 + 浅色内容区 + 卡片布局
   ============================================================ */

/* ========== CSS 变量 ========== */
:root {
    --sidebar-bg: #1e293b;
    --sidebar-hover: #334155;
    --sidebar-active: #4f46e5;
    --sidebar-text: #cbd5e1;
    --sidebar-text-dim: #64748b;
    --main-bg: #f1f5f9;
    --card-bg: #ffffff;
    --primary: #4f46e5;
    --primary-hover: #4338ca;
    --primary-light: #eef2ff;
    --text-primary: #1e293b;
    --text-secondary: #64748b;
    --text-muted: #94a3b8;
    --border: #e2e8f0;
    --border-light: #f1f5f9;
    --success: #16a34a;
    --success-bg: #f0fdf4;
    --danger: #dc2626;
    --danger-bg: #fef2f2;
    --warning: #d97706;
    --warning-bg: #fffbeb;
    --radius: 10px;
    --radius-sm: 6px;
    --radius-lg: 14px;
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow: 0 1px 3px rgba(0, 0, 0, 0.1), 0 1px 2px rgba(0, 0, 0, 0.06);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --transition: all 0.2s ease;
}

/* ========== 基础重置 ========== */
*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    height: 100%;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "PingFang SC", "Microsoft YaHei", sans-serif;
    color: var(--text-primary);
    line-height: 1.6;
    font-size: 14px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    background: var(--main-bg);
}

a {
    color: inherit;
    text-decoration: none;
}

button {
    font-family: inherit;
    cursor: pointer;
    border: none;
    background: none;
}

input, select, textarea {
    font-family: inherit;
    font-size: inherit;
    color: inherit;
}

code {
    background: var(--border-light);
    padding: 2px 6px;
    border-radius: 4px;
    font-size: 0.9em;
    font-family: "Consolas", "Monaco", "Courier New", monospace;
}

/* ========== 侧边栏布局 ========== */
body.tools-layout {
    display: flex;
    min-height: 100vh;
    background: var(--main-bg);
}

.sidebar {
    width: 240px;
    min-height: 100vh;
    background: var(--sidebar-bg);
    flex-shrink: 0;
    position: sticky;
    top: 0;
    overflow-y: auto;
    padding: 20px 0;
    display: flex;
    flex-direction: column;
}

.sidebar-brand {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 0 20px 20px;
    font-size: 16px;
    font-weight: 700;
    color: #fff;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    margin-bottom: 16px;
}

.sidebar-brand .logo {
    font-size: 20px;
}

.sidebar-cat {
    margin-bottom: 20px;
}

.sidebar-cat-title {
    padding: 0 20px;
    font-size: 11px;
    font-weight: 600;
    color: var(--sidebar-text-dim);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 6px;
}

.sidebar-link {
    display: block;
    padding: 8px 20px;
    font-size: 13px;
    color: var(--sidebar-text);
    transition: var(--transition);
    border-left: 3px solid transparent;
}

.sidebar-link:hover {
    background: var(--sidebar-hover);
    color: #fff;
}

.sidebar-link.active {
    background: rgba(79, 70, 229, 0.15);
    color: #fff;
    border-left-color: var(--sidebar-active);
    font-weight: 600;
}

.tools-main {
    flex: 1;
    min-width: 0;
    padding: 32px;
    overflow-x: hidden;
}

/* ========== 页面容器 ========== */
.container {
    max-width: 960px;
    margin: 0 auto;
}

.page-header {
    margin-bottom: 24px;
}

.page-header h1 {
    font-size: 24px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 4px;
}

.page-header .subtitle {
    font-size: 14px;
    color: var(--text-secondary);
}

/* ========== 卡片区块 ========== */
.card {
    background: var(--card-bg);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border);
    padding: 24px;
    margin-bottom: 20px;
}

.card-title {
    font-size: 14px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 16px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.card-title::before {
    content: '';
    width: 3px;
    height: 16px;
    background: var(--primary);
    border-radius: 2px;
    flex-shrink: 0;
}

/* 兼容旧结构的 panel */
.panel {
    background: var(--card-bg);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border);
    padding: 24px;
}

.panel h3 {
    font-size: 14px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 16px;
    padding-bottom: 0;
    border-bottom: none;
    display: flex;
    align-items: center;
    gap: 8px;
}

.panel h3::before {
    content: '';
    width: 3px;
    height: 16px;
    background: var(--primary);
    border-radius: 2px;
    flex-shrink: 0;
}

/* ========== 双栏布局 ========== */
.main {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

@media (max-width: 768px) {
    .main {
        grid-template-columns: 1fr;
    }
}

/* ========== 表单 ========== */
.form-row {
    margin-bottom: 16px;
}

.form-row:last-child {
    margin-bottom: 0;
}

.form-row label {
    display: block;
    margin-bottom: 6px;
    font-size: 13px;
    font-weight: 600;
    color: var(--text-secondary);
}

.form-row.inline {
    display: flex;
    align-items: center;
    gap: 12px;
}

.form-row.inline label {
    margin-bottom: 0;
    white-space: nowrap;
}

.form-group {
    margin-bottom: 16px;
}

.form-group:last-child {
    margin-bottom: 0;
}

.form-group label {
    display: block;
    margin-bottom: 6px;
    font-size: 13px;
    font-weight: 600;
    color: var(--text-secondary);
}

input[type="text"],
input[type="number"],
input[type="password"],
input[type="email"],
input[type="color"],
input[type="date"],
input[type="time"],
input[type="datetime-local"],
input[type="url"],
select,
textarea {
    width: 100%;
    padding: 9px 12px;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    font-size: 14px;
    transition: var(--transition);
    font-family: inherit;
    background: #fff;
    color: var(--text-primary);
}

textarea {
    resize: vertical;
    min-height: 100px;
    line-height: 1.6;
}

input:focus,
select:focus,
textarea:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.1);
}

select {
    appearance: none;
    background-image: url("data:image/svg+xml;charset=UTF-8,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%2364748b' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3e%3cpolyline points='6 9 12 15 18 9'%3e%3c/polyline%3e%3c/svg%3e");
    background-repeat: no-repeat;
    background-position: right 10px center;
    background-size: 16px;
    padding-right: 36px;
    cursor: pointer;
}

input[type="color"] {
    height: 40px;
    padding: 4px;
    cursor: pointer;
}

input[type="file"] {
    padding: 8px;
    border: 1px dashed var(--border);
    border-radius: var(--radius-sm);
    background: var(--border-light);
    width: 100%;
    cursor: pointer;
    font-size: 13px;
    color: var(--text-secondary);
}

input[type="file"]:hover {
    border-color: var(--primary);
}

input[type="checkbox"],
input[type="radio"] {
    width: 16px;
    height: 16px;
    cursor: pointer;
    accent-color: var(--primary);
}

.hint-text {
    font-size: 12px;
    color: var(--text-muted);
    margin-top: 4px;
}

.hint-text.warn {
    color: var(--danger);
}

/* ========== 单选 / 多选组 ========== */
.radio-group,
.checkbox-group {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
}

.radio-group label,
.checkbox-group label {
    font-weight: normal;
    display: flex;
    align-items: center;
    gap: 4px;
    cursor: pointer;
    margin-bottom: 0;
    font-size: 14px;
    color: var(--text-secondary);
}

/* ========== 按钮 ========== */
.buttons,
.action-bar,
.action-btns,
.button-container {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
    margin-top: 20px;
}

.buttons {
    margin-top: 0;
    margin-bottom: 20px;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    padding: 9px 20px;
    border-radius: var(--radius-sm);
    font-size: 14px;
    font-weight: 500;
    transition: var(--transition);
    cursor: pointer;
    border: none;
    color: #fff;
    text-align: center;
    line-height: 1.4;
    white-space: nowrap;
}

.btn:hover {
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

.btn:active {
    transform: translateY(0);
}

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none !important;
    box-shadow: none !important;
}

.btn-primary,
.btn-generate,
.btn-zh2uni,
.btn-copy {
    background: var(--primary);
    color: #fff;
}

.btn-primary:hover,
.btn-generate:hover,
.btn-zh2uni:hover,
.btn-copy:hover {
    background: var(--primary-hover);
}

.btn-download {
    background: var(--success);
    color: #fff;
}

.btn-download:hover {
    background: #15803d;
}

.btn-secondary,
.btn-clear,
.btn-danger {
    background: #fff;
    color: var(--text-secondary);
    border: 1px solid var(--border);
}

.btn-secondary:hover,
.btn-clear:hover,
.btn-danger:hover {
    background: var(--border-light);
    border-color: var(--text-muted);
    color: var(--text-primary);
}

.btn-danger {
    color: var(--danger);
    border-color: #fecaca;
}

.btn-danger:hover {
    background: var(--danger-bg);
    border-color: var(--danger);
}

.btn-uni2zh {
    background: #ec4899;
    color: #fff;
}

.btn-uni2zh:hover {
    background: #db2777;
}

.btn-ascii2uni {
    background: #0ea5e9;
    color: #fff;
}

.btn-ascii2uni:hover {
    background: #0284c7;
}

.btn-uni2ascii {
    background: #10b981;
    color: #fff;
}

.btn-uni2ascii:hover {
    background: #059669;
}

.btn-swap {
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 16px;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    border: 1px solid var(--border);
    background: #fff;
    color: var(--primary);
    font-size: 18px;
    cursor: pointer;
    transition: var(--transition);
}

.btn-swap:hover {
    background: var(--primary);
    color: #fff;
    border-color: var(--primary);
    transform: rotate(180deg);
}

/* OddNotify 专用按钮 */
.primary-button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 9px 20px;
    border-radius: var(--radius-sm);
    font-size: 14px;
    font-weight: 500;
    transition: var(--transition);
    cursor: pointer;
    border: none;
    background: var(--primary);
    color: #fff;
}

.primary-button:hover {
    background: var(--primary-hover);
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

.secondary-button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 9px 20px;
    border-radius: var(--radius-sm);
    font-size: 14px;
    font-weight: 500;
    transition: var(--transition);
    cursor: pointer;
    border: 1px solid var(--border);
    background: #fff;
    color: var(--text-secondary);
}

.secondary-button:hover {
    background: var(--border-light);
    border-color: var(--text-muted);
    color: var(--text-primary);
}

/* ========== 上传区域 ========== */
.upload-area,
.upload-zone {
    border: 2px dashed var(--border);
    border-radius: var(--radius);
    padding: 40px 24px;
    text-align: center;
    cursor: pointer;
    transition: var(--transition);
    background: var(--border-light);
    position: relative;
    overflow: hidden;
}

.upload-area:hover,
.upload-zone:hover,
.upload-area.dragover,
.upload-zone.dragover {
    border-color: var(--primary);
    background: var(--primary-light);
}

.upload-icon,
.upload-zone .cloud-icon,
.upload-zone .icon {
    width: 48px;
    height: 48px;
    margin: 0 auto 12px;
    background: var(--primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-size: 22px;
}

.upload-area h3,
.upload-zone .main-text {
    color: var(--text-primary);
    font-size: 15px;
    font-weight: 600;
    margin-bottom: 6px;
}

.upload-area p,
.upload-zone .sub-text {
    color: var(--text-muted);
    font-size: 13px;
}

.upload-area input[type="file"],
.upload-zone input[type="file"] {
    display: none;
}

/* ========== 文件信息卡片 ========== */
.file-info {
    display: none;
    margin-top: 16px;
    padding: 12px 16px;
    background: var(--border-light);
    border-radius: var(--radius-sm);
    border: 1px solid var(--border);
    align-items: center;
    gap: 12px;
}

.file-info.show {
    display: flex;
}

.file-info .file-icon {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-sm);
    background: var(--primary);
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-size: 18px;
    flex-shrink: 0;
}

.file-info .file-meta {
    flex: 1;
    min-width: 0;
}

.file-info .file-meta .name {
    font-weight: 600;
    color: var(--text-primary);
    font-size: 14px;
    margin-bottom: 2px;
    word-break: break-all;
}

.file-info .file-meta .detail {
    color: var(--text-muted);
    font-size: 12px;
}

.file-remove,
.remove-btn {
    padding: 6px 14px;
    border: 1px solid var(--border);
    background: #fff;
    border-radius: var(--radius-sm);
    font-size: 12px;
    color: var(--text-secondary);
    cursor: pointer;
    transition: var(--transition);
    flex-shrink: 0;
}

.file-remove:hover,
.remove-btn:hover {
    border-color: var(--danger);
    color: var(--danger);
    background: var(--danger-bg);
}

.file-card {
    display: none;
    margin-top: 16px;
    padding: 12px 16px;
    background: var(--border-light);
    border-radius: var(--radius-sm);
    border: 1px solid var(--border);
    align-items: center;
    gap: 12px;
}

.file-card.active {
    display: flex;
}

.file-card img {
    width: 56px;
    height: 56px;
    object-fit: cover;
    border-radius: var(--radius-sm);
    border: 1px solid var(--border);
    background: #fff;
    flex-shrink: 0;
}

.file-card .file-info {
    display: block;
    margin-top: 0;
    padding: 0;
    background: none;
    border: none;
    border-radius: 0;
    flex: 1;
}

.file-card .file-name {
    font-weight: 600;
    color: var(--text-primary);
    font-size: 14px;
    margin-bottom: 2px;
    word-break: break-all;
}

.file-card .file-meta {
    color: var(--text-muted);
    font-size: 12px;
}

/* ========== 预览区 ========== */
.preview-box {
    min-height: 160px;
    border: 1px dashed var(--border);
    border-radius: var(--radius-sm);
    background: var(--border-light);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
    overflow: auto;
}

.preview-box canvas,
.preview-box svg,
.preview-box img {
    max-width: 100%;
    height: auto;
}

.preview-placeholder {
    color: var(--text-muted);
    font-size: 14px;
    text-align: center;
}

.preview-area {
    display: none;
    margin-top: 16px;
}

.preview-area.active,
.preview-area.show {
    display: block;
}

.preview-area img {
    max-width: 280px;
    max-height: 280px;
    border-radius: var(--radius-sm);
    border: 1px solid var(--border);
    box-shadow: var(--shadow-sm);
}

.preview-panel {
    display: flex;
    flex-direction: column;
}

.format-info {
    margin-top: 10px;
    font-size: 12px;
    color: var(--text-muted);
    text-align: center;
}

/* ========== 设置区 ========== */
.settings-section {
    display: none;
    margin-top: 20px;
}

.settings-section.show {
    display: block;
}

.settings-section h4 {
    font-size: 14px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 12px;
}

.setting-card {
    background: var(--border-light);
    border-radius: var(--radius-sm);
    padding: 14px 16px;
    margin-bottom: 12px;
    border: 1px solid var(--border);
}

.setting-card:last-child {
    margin-bottom: 0;
}

.setting-card-header {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 10px;
}

.setting-card-header label {
    font-size: 13px;
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: 0;
}

.tip {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 16px;
    height: 16px;
    border-radius: 50%;
    background: var(--border);
    color: var(--text-secondary);
    font-size: 10px;
    font-weight: 700;
    cursor: help;
    position: relative;
}

.tip::after {
    content: attr(data-tip);
    position: absolute;
    left: 50%;
    bottom: calc(100% + 6px);
    transform: translateX(-50%);
    background: var(--text-primary);
    color: #fff;
    padding: 5px 10px;
    border-radius: var(--radius-sm);
    font-size: 12px;
    font-weight: 400;
    width: max-content;
    max-width: 220px;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.2s;
    white-space: normal;
    z-index: 100;
}

.tip:hover::after {
    opacity: 1;
}

.option-group {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

.option-btn {
    padding: 7px 16px;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    background: #fff;
    font-size: 13px;
    font-weight: 500;
    color: var(--text-secondary);
    cursor: pointer;
    transition: var(--transition);
}

.option-btn:hover {
    border-color: var(--primary);
    color: var(--primary);
}

.option-btn.active {
    border-color: var(--primary);
    background: var(--primary);
    color: #fff;
}

.option-btn:disabled {
    opacity: 0.4;
    cursor: not-allowed;
}

/* ========== 尺寸选择 ========== */
.size-panel {
    margin-top: 20px;
}

.size-panel .panel-title {
    font-size: 14px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 12px;
    display: flex;
    align-items: center;
    gap: 6px;
}

.size-panel .panel-title::before {
    content: '';
    width: 3px;
    height: 16px;
    background: var(--primary);
    border-radius: 2px;
}

.size-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 8px;
}

@media (max-width: 600px) {
    .size-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

.size-cell {
    position: relative;
}

.size-cell input {
    position: absolute;
    opacity: 0;
}

.size-cell .cell-box {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 12px 8px;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: var(--transition);
    background: #fff;
}

.size-cell .cell-box:hover {
    border-color: #c7d2fe;
}

.size-cell input:checked + .cell-box {
    border-color: var(--primary);
    background: var(--primary-light);
    box-shadow: 0 0 0 1px var(--primary);
}

.size-cell .cell-box .dim {
    font-size: 13px;
    font-weight: 700;
    color: var(--text-primary);
}

.size-cell input:checked + .cell-box .dim {
    color: var(--primary);
}

.size-cell .cell-box .label {
    font-size: 11px;
    color: var(--text-muted);
    margin-top: 2px;
}

.size-cell input:checked + .cell-box .label {
    color: var(--primary);
}

.custom-box,
.custom-size {
    display: none;
    margin-top: 12px;
    padding: 14px;
    background: var(--border-light);
    border-radius: var(--radius-sm);
    border: 1px solid var(--border);
    align-items: center;
    gap: 10px;
    flex-wrap: wrap;
}

.custom-box.active,
.custom-size.active {
    display: flex;
}

.custom-box label,
.custom-size label {
    font-size: 13px;
    color: var(--text-secondary);
    font-weight: 600;
}

.custom-box input,
.custom-size input {
    width: 90px;
    padding: 8px 10px;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    font-size: 14px;
    text-align: center;
}

.custom-box input:focus,
.custom-size input:focus {
    outline: none;
    border-color: var(--primary);
}

.custom-box span,
.custom-size span {
    color: var(--text-muted);
    font-size: 14px;
}

/* ========== 进度条 ========== */
.progress-wrap {
    display: none;
    margin-top: 16px;
}

.progress-wrap.show {
    display: block;
}

.progress-bar {
    height: 8px;
    background: var(--border);
    border-radius: 4px;
    overflow: hidden;
}

.progress-bar-inner,
.progress-fill {
    height: 100%;
    width: 0%;
    background: var(--primary);
    border-radius: 4px;
    transition: width 0.3s ease;
}

.progress-text,
.loading-text {
    text-align: center;
    color: var(--text-secondary);
    font-size: 13px;
    font-weight: 500;
    margin-top: 8px;
}

.ffmpeg-status {
    display: none;
    margin-top: 14px;
    padding: 10px 16px;
    border-radius: var(--radius-sm);
    background: var(--primary-light);
    color: var(--primary-hover);
    font-size: 13px;
    font-weight: 500;
    text-align: center;
}

.ffmpeg-status.show {
    display: block;
}

/* ========== 结果表格 ========== */
.result-section {
    display: none;
    margin-top: 20px;
}

.result-section.show {
    display: block;
}

.result-section h4 {
    font-size: 14px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 12px;
}

.result-table {
    width: 100%;
    border-collapse: collapse;
    background: #fff;
    border-radius: var(--radius-sm);
    overflow: hidden;
    border: 1px solid var(--border);
}

.result-table th,
.result-table td {
    padding: 10px 14px;
    text-align: left;
    border-bottom: 1px solid var(--border-light);
    font-size: 13px;
    vertical-align: middle;
}

.result-table th {
    background: var(--border-light);
    font-weight: 600;
    color: var(--text-secondary);
    font-size: 12px;
    text-transform: uppercase;
    letter-spacing: 0.3px;
}

.result-table tr:last-child td {
    border-bottom: none;
}

.result-table audio {
    width: 240px;
    height: 32px;
    border-radius: var(--radius-sm);
}

.result-actions {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
    margin-top: 10px;
}

.result-actions .btn-download,
.result-actions .btn-delete {
    padding: 5px 12px;
    border-radius: var(--radius-sm);
    font-size: 12px;
    font-weight: 500;
    cursor: pointer;
    border: none;
    transition: var(--transition);
}

.result-actions .btn-download {
    background: var(--primary);
    color: #fff;
}

.result-actions .btn-download:hover {
    background: var(--primary-hover);
}

.result-actions .btn-delete {
    background: #fff;
    color: var(--danger);
    border: 1px solid #fecaca;
}

.result-actions .btn-delete:hover {
    background: var(--danger-bg);
}

/* ========== 结果面板 ========== */
.result-panel {
    display: none;
    margin-top: 20px;
    padding: 20px;
    background: var(--border-light);
    border-radius: var(--radius);
    border: 1px solid var(--border);
    text-align: center;
}

.result-panel.active {
    display: block;
}

.result-panel .result-title {
    font-size: 13px;
    color: var(--text-secondary);
    margin-bottom: 10px;
}

.result-img-wrap {
    display: inline-block;
    padding: 12px;
    background: #fff;
    border-radius: var(--radius-sm);
    box-shadow: var(--shadow-sm);
    margin-bottom: 10px;
}

.result-panel img {
    display: block;
    max-width: 200px;
    max-height: 200px;
}

.result-panel .result-meta {
    color: var(--text-muted);
    font-size: 12px;
    margin-bottom: 12px;
}

/* ========== 加载 / 结果文本区 ========== */
.loading-area {
    display: none;
    margin-top: 16px;
    padding: 16px;
    background: var(--border-light);
    border-radius: var(--radius-sm);
    border: 1px solid var(--border);
    text-align: center;
}

.loading-area.active {
    display: block;
}

.result-area {
    display: none;
    margin-top: 20px;
}

.result-area.active {
    display: block;
}

.result-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 8px;
}

.result-header .title {
    font-size: 14px;
    font-weight: 600;
    color: var(--text-primary);
}

.result-header .word-count {
    font-size: 12px;
    color: var(--text-muted);
}

.result-area textarea {
    width: 100%;
    min-height: 160px;
    padding: 14px;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    font-size: 14px;
    line-height: 1.7;
    resize: vertical;
    font-family: inherit;
    transition: var(--transition);
}

.result-area textarea:focus {
    outline: none;
    border-color: var(--primary);
}

/* ========== 音视频预览 ========== */
.audio-preview-wrap,
.video-preview-wrap,
.audio-player-wrap {
    display: none;
    margin-top: 16px;
}

.audio-preview-wrap.show,
.video-preview-wrap.show,
.audio-player-wrap.show {
    display: block;
}

.audio-preview-wrap label,
.video-preview-wrap label,
.audio-player-wrap label {
    display: block;
    font-size: 13px;
    color: var(--text-secondary);
    margin-bottom: 6px;
    font-weight: 500;
}

audio,
video {
    width: 100%;
    border-radius: var(--radius-sm);
}

/* ========== 时间选择 ========== */
.time-section {
    display: none;
    margin-top: 20px;
}

.time-section.show {
    display: block;
}

.time-section h4 {
    font-size: 14px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 12px;
}

.time-hint {
    background: var(--primary-light);
    padding: 10px 14px;
    border-radius: var(--radius-sm);
    font-size: 13px;
    color: var(--primary-hover);
    margin-bottom: 12px;
}

.quick-btns {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
    margin-bottom: 12px;
}

.quick-btns button {
    padding: 6px 12px;
    background: #fff;
    color: var(--text-secondary);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    font-size: 12px;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
}

.quick-btns button:hover {
    background: var(--primary);
    color: #fff;
    border-color: var(--primary);
}

.time-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
}

.time-field label {
    display: block;
    margin-bottom: 6px;
    font-size: 13px;
    font-weight: 600;
    color: var(--text-secondary);
}

@media (max-width: 600px) {
    .time-row {
        grid-template-columns: 1fr;
    }
}

/* ========== 说明区 ========== */
.info-section {
    margin-top: 24px;
    padding-top: 20px;
    border-top: 1px solid var(--border);
}

.info-section h2 {
    font-size: 16px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 12px;
}

.info-section h3,
.info-section h4 {
    font-size: 14px;
    font-weight: 600;
    color: var(--text-primary);
    margin: 16px 0 8px;
}

.info-section p {
    color: var(--text-secondary);
    line-height: 1.8;
    font-size: 14px;
    margin-bottom: 8px;
}

.info-section ul,
.info-section ol {
    padding-left: 20px;
    margin-bottom: 12px;
}

.info-section li {
    color: var(--text-secondary);
    line-height: 1.8;
    font-size: 14px;
    margin-bottom: 4px;
}

.info-section strong {
    color: var(--text-primary);
    font-weight: 600;
}

.info-section .highlight,
.info-section .tip-box {
    background: var(--primary-light);
    padding: 12px 16px;
    border-radius: var(--radius-sm);
    margin: 12px 0;
    border-left: 3px solid var(--primary);
}

.info-section .highlight p,
.info-section .tip-box p {
    margin: 0;
    color: var(--text-primary);
}

.info-section .code-block {
    background: #1e293b;
    color: #e2e8f0;
    padding: 12px 16px;
    border-radius: var(--radius-sm);
    margin: 8px 0;
    overflow-x: auto;
}

.info-section .code-block code {
    background: none;
    color: inherit;
    display: block;
    padding: 0;
    font-size: 13px;
    line-height: 1.6;
}

.info-section .summary {
    background: var(--primary-light);
    padding: 12px 16px;
    border-radius: var(--radius-sm);
    margin-top: 12px;
    color: var(--text-primary);
    font-size: 14px;
    line-height: 1.8;
}

.warn {
    color: var(--danger);
    font-weight: 500;
}

/* ========== 比特率参考表 ========== */
.bitrate-table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 10px;
    font-size: 13px;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    overflow: hidden;
}

.bitrate-table th,
.bitrate-table td {
    border: none;
    border-bottom: 1px solid var(--border-light);
    padding: 8px 12px;
    text-align: left;
}

.bitrate-table th {
    background: var(--border-light);
    color: var(--text-secondary);
    font-weight: 600;
    font-size: 12px;
}

.bitrate-table td {
    color: var(--text-secondary);
}

.bitrate-table tr:last-child td {
    border-bottom: none;
}

/* ========== 裁剪器 ========== */
.cropper-panel {
    display: none;
    margin-top: 16px;
}

.cropper-panel.active {
    display: block;
}

.img-container {
    max-height: 480px;
    background: var(--border-light);
    border-radius: var(--radius-sm);
    overflow: hidden;
}

.img-container img {
    display: block;
    max-width: 100%;
}

.cropper-view-box.round,
.cropper-face.round {
    border-radius: 50%;
}

.cropper-view-box.round {
    outline: 0;
}

.settings {
    display: none;
    margin-top: 16px;
    padding: 16px;
    background: var(--border-light);
    border-radius: var(--radius-sm);
    border: 1px solid var(--border);
}

.settings.active {
    display: block;
}

.settings .form-row:last-child {
    margin-bottom: 0;
}

.coords {
    margin-top: 10px;
    padding: 10px 14px;
    background: #fff;
    border-radius: var(--radius-sm);
    border: 1px solid var(--border);
    font-size: 13px;
    color: var(--text-secondary);
    font-family: "Consolas", "Monaco", monospace;
}

.coords span {
    color: var(--primary);
    font-weight: 600;
}

.logo-preview {
    margin-top: 8px;
    max-width: 72px;
    max-height: 72px;
    border-radius: var(--radius-sm);
    display: none;
    border: 1px solid var(--border);
}

.logo-preview.active {
    display: block;
}

.codec-tip {
    margin-top: 12px;
    padding: 10px 14px;
    border-radius: var(--radius-sm);
    font-size: 13px;
    line-height: 1.6;
    display: none;
}

.codec-tip.show {
    display: block;
}

.codec-tip.info {
    background: var(--primary-light);
    color: var(--primary-hover);
    border-left: 3px solid var(--primary);
}

.codec-tip.warning {
    background: var(--warning-bg);
    color: var(--warning);
    border-left: 3px solid var(--warning);
}

.auto-tip {
    display: none;
    padding: 10px 14px;
    border-radius: var(--radius-sm);
    background: var(--success-bg);
    color: var(--success);
    font-size: 13px;
    border-left: 3px solid var(--success);
    margin-bottom: 12px;
}

.auto-tip.show {
    display: block;
}

/* ========== Unicode 工具 ========== */
.section {
    margin-bottom: 16px;
}

.section:last-child {
    margin-bottom: 0;
}

.section label {
    display: block;
    margin-bottom: 6px;
    color: var(--text-secondary);
    font-weight: 600;
    font-size: 13px;
}

.output-wrapper {
    position: relative;
}

.output-actions {
    display: flex;
    gap: 8px;
    justify-content: flex-end;
    margin-bottom: 6px;
}

.output-actions .btn {
    padding: 5px 14px;
    font-size: 12px;
}

.hint {
    text-align: center;
    color: var(--text-muted);
    font-size: 13px;
    margin-top: 12px;
}

/* ========== 消息提示 ========== */
.message-box {
    margin-top: 16px;
    padding: 12px 16px;
    border-radius: var(--radius-sm);
    text-align: center;
    font-weight: 500;
    font-size: 14px;
    display: none;
}

.message-box.show {
    display: block;
}

.message-box.success {
    background: var(--success-bg);
    color: var(--success);
    border: 1px solid #bbf7d0;
}

.message-box.error {
    background: var(--danger-bg);
    color: var(--danger);
    border: 1px solid #fecaca;
}

/* ========== JSON 工具 ========== */
.collapsible {
    cursor: pointer;
    color: var(--primary);
    font-weight: 600;
    user-select: none;
}

.collapsed {
    display: none;
}

.json-wrapper {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
}

.json-wrapper textarea,
#jsonOutput {
    flex: 0 0 calc(50% - 8px);
    min-height: 280px;
    margin-top: 8px;
    padding: 12px;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    overflow: auto;
    font-family: "Consolas", "Monaco", "Courier New", monospace;
    font-size: 13px;
    line-height: 1.6;
    background: #fff;
}

#jsonOutput {
    background: var(--border-light);
    white-space: pre-wrap;
    word-break: break-all;
}

@media (max-width: 768px) {
    .json-wrapper textarea,
    #jsonOutput {
        flex: 0 0 100%;
    }
}

/* ========== Markdown 编辑器 ========== */
.editor-container {
    display: flex;
    flex-direction: row;
    width: 100%;
    min-height: calc(100vh - 280px);
    gap: 16px;
    flex-wrap: wrap;
}

.editor-pane {
    flex: 0 0 calc(50% - 8px);
    min-width: 0;
}

.editor-pane textarea {
    width: 100%;
    min-height: 480px;
    padding: 14px;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    font-family: "Consolas", "Monaco", "Courier New", monospace;
    font-size: 14px;
    line-height: 1.7;
    resize: vertical;
    transition: var(--transition);
}

.editor-pane textarea:focus {
    outline: none;
    border-color: var(--primary);
}

.preview-pane {
    flex: 0 0 calc(50% - 8px);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    background: #fff;
    padding: 16px;
    overflow-y: auto;
    position: relative;
    max-height: 70vh;
    min-height: 480px;
}

.preview-pane h1 {
    font-size: 22px;
    margin: 16px 0 10px;
    padding-bottom: 6px;
    border-bottom: 2px solid var(--primary);
}

.preview-pane h2 {
    font-size: 18px;
    margin: 14px 0 8px;
}

.preview-pane h3 {
    font-size: 16px;
    margin: 12px 0 6px;
}

.preview-pane p {
    margin-bottom: 10px;
    line-height: 1.8;
    font-size: 14px;
    color: var(--text-primary);
}

.preview-pane ul,
.preview-pane ol {
    padding-left: 20px;
    margin-bottom: 10px;
}

.preview-pane li {
    margin-bottom: 4px;
}

.preview-pane a {
    color: var(--primary);
}

.preview-pane blockquote {
    border-left: 3px solid var(--primary);
    padding: 8px 14px;
    margin: 10px 0;
    color: var(--text-secondary);
    background: var(--primary-light);
    border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
}

.preview-pane pre {
    background: #1e293b;
    color: #e2e8f0;
    padding: 12px 16px;
    border-radius: var(--radius-sm);
    overflow-x: auto;
    margin: 10px 0;
}

.preview-pane pre code {
    background: none;
    color: inherit;
    padding: 0;
}

.preview-pane img {
    max-width: 100%;
    border-radius: var(--radius-sm);
}

.preview-pane table {
    border-collapse: collapse;
    width: 100%;
    margin: 10px 0;
}

.preview-pane th,
.preview-pane td {
    border: 1px solid var(--border);
    padding: 6px 10px;
}

.preview-pane th {
    background: var(--border-light);
    font-weight: 600;
}

@media (max-width: 768px) {
    .editor-pane,
    .preview-pane {
        flex: 0 0 100%;
    }
}

.toolbar {
    position: absolute;
    top: 8px;
    right: 12px;
    display: flex;
    gap: 6px;
    z-index: 10;
}

.toolbar.fixed-top {
    position: static;
    background: #fff;
    padding: 8px 12px;
    margin-bottom: 12px;
    border-radius: var(--radius-sm);
    border: 1px solid var(--border);
    display: flex;
    gap: 8px;
    align-items: center;
    justify-content: flex-end;
    flex-wrap: wrap;
}

.toolbar button,
.toolbar.fixed-top button,
.toolbar.fixed-top select {
    padding: 6px 12px;
    border-radius: var(--radius-sm);
    font-size: 12px;
    font-weight: 500;
    cursor: pointer;
    border: 1px solid var(--border);
    background: #fff;
    color: var(--text-secondary);
    transition: var(--transition);
}

.toolbar button:hover,
.toolbar.fixed-top button:hover {
    background: var(--primary);
    color: #fff;
    border-color: var(--primary);
}

.toolbar.fixed-top select {
    background: var(--border-light);
    border: 1px solid var(--border);
    color: var(--text-secondary);
}

/* ========== 首页卡片 ========== */
.tools-main-full {
    flex: 1;
    min-width: 0;
    padding: 0;
    overflow-x: hidden;
}

.hero {
    text-align: center;
    padding: 20px 0 28px;
}

.hero h1 {
    font-size: 32px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 8px;
}

.hero p {
    font-size: 15px;
    color: var(--text-secondary);
    max-width: 500px;
    margin: 0 auto;
}

.category {
    margin-bottom: 28px;
}

.category-title {
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--text-primary);
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 12px;
    padding-left: 4px;
}

.category-title .icon {
    width: 28px;
    height: 28px;
    border-radius: var(--radius-sm);
    background: var(--primary-light);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 14px;
    color: var(--primary);
}

.tools-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 12px;
}

.tool-card {
    background: #fff;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 18px 16px;
    text-decoration: none;
    color: var(--text-primary);
    transition: var(--transition);
    cursor: pointer;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.tool-card:hover {
    border-color: var(--primary);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.tool-card .card-icon {
    width: 36px;
    height: 36px;
    border-radius: var(--radius-sm);
    background: var(--primary-light);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
    flex-shrink: 0;
    color: var(--primary);
}

.tool-card .card-title {
    font-size: 14px;
    font-weight: 600;
    color: var(--text-primary);
}

.tool-card .card-desc {
    font-size: 12px;
    color: var(--text-muted);
    line-height: 1.5;
}

.footer {
    text-align: center;
    padding: 24px 20px;
    color: var(--text-muted);
    font-size: 12px;
}

@media (max-width: 600px) {
    .hero h1 {
        font-size: 24px;
    }

    .tools-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* ========== OddNotify 专用 ========== */
.main-container {
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    padding: 28px;
    width: 100%;
    max-width: 720px;
    margin: 0 auto;
}

.page-logo {
    text-align: center;
    margin-bottom: 20px;
}

.page-logo img {
    max-width: 240px;
    height: auto;
}

/* ========== Bookmark 页面 ========== */
body.bookmark-page {
    background: #fff;
}

.bookmark-page .nav-bar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 24px;
    font-size: 13px;
    border-bottom: 1px solid var(--border);
}

.nav-left a,
.nav-right a {
    color: var(--text-secondary);
    text-decoration: none;
    margin: 0 6px;
    padding: 4px;
    transition: var(--transition);
}

.nav-left a:hover,
.nav-right a:hover {
    color: var(--primary);
}

.nav-right {
    display: flex;
    align-items: center;
    gap: 8px;
}

.icon-button {
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    border-radius: 50%;
    transition: var(--transition);
}

.icon-button:hover {
    background: var(--border-light);
}

.user-avatar {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background: var(--primary);
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    font-weight: 600;
    font-size: 13px;
}

.main-content-wrap {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: 70vh;
    padding: 32px;
}

.logo-container svg {
    width: 240px;
    height: auto;
    margin-bottom: 28px;
}

.search-container {
    width: 100%;
    max-width: 560px;
    position: relative;
    margin-bottom: 20px;
}

.search-box {
    width: 100%;
    height: 44px;
    padding: 0 3rem;
    border: 1px solid var(--border);
    border-radius: 24px;
    font-size: 15px;
    outline: none;
    transition: var(--transition);
}

.search-box:hover,
.search-box:focus {
    box-shadow: var(--shadow-md);
    border-color: var(--primary);
}

.search-icon {
    position: absolute;
    left: 16px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-muted);
}

.mic-icon {
    position: absolute;
    right: 16px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-muted);
    cursor: pointer;
}

.search-buttons {
    display: flex;
    gap: 12px;
    margin-bottom: 24px;
    flex-wrap: wrap;
    justify-content: center;
}

.search-button {
    padding: 8px 20px;
    background: var(--border-light);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    font-size: 14px;
    color: var(--text-secondary);
    cursor: pointer;
    transition: var(--transition);
}

.search-button:hover {
    border-color: var(--text-muted);
    box-shadow: var(--shadow-sm);
}

.language-links {
    font-size: 13px;
    color: var(--text-muted);
}

.language-links a {
    color: var(--primary);
    text-decoration: none;
}

.language-links a:hover {
    text-decoration: underline;
}

.page-footer {
    margin-top: auto;
    padding: 12px 24px;
    background: var(--border-light);
    font-size: 13px;
    border-top: 1px solid var(--border);
}

.footer-top {
    padding-bottom: 8px;
    border-bottom: 1px solid var(--border);
    margin-bottom: 8px;
}

.footer-bottom {
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
}

.footer-links a {
    color: var(--text-muted);
    text-decoration: none;
    margin: 0 10px;
    display: inline-block;
}

.footer-links a:hover {
    color: var(--primary);
}

@media (max-width: 670px) {
    .footer-bottom {
        flex-direction: column;
        align-items: center;
    }

    .footer-links {
        margin-bottom: 8px;
    }
}

/* ========== Markit 笔记页面 ========== */
body.markit-page {
    background: #fff;
    color: var(--text-primary);
    height: 100vh;
    overflow: hidden;
}

.app-container {
    display: flex;
    height: 100vh;
    overflow: hidden;
}

.msidebar {
    width: 240px;
    background: #fbfbfa;
    border-right: 1px solid var(--border);
    display: flex;
    flex-direction: column;
    padding: 12px 0;
    overflow-y: auto;
    flex-shrink: 0;
}

.msidebar-header {
    padding: 0 16px 12px;
    border-bottom: 1px solid var(--border);
}

.msidebar-logo {
    font-size: 20px;
    font-weight: 700;
    color: var(--text-primary);
}

.msidebar-section {
    margin-top: 12px;
}

.msidebar-section-title {
    font-size: 11px;
    font-weight: 600;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    padding: 0 16px 6px;
}

.msidebar-item {
    display: flex;
    align-items: center;
    padding: 7px 16px;
    cursor: pointer;
    border-radius: var(--radius-sm);
    margin: 1px 8px;
    transition: var(--transition);
    text-decoration: none;
    color: inherit;
    font-size: 13px;
}

.msidebar-item:hover {
    background: var(--border-light);
}

.msidebar-item.active {
    background: var(--border-light);
    font-weight: 600;
}

.msidebar-item-icon {
    width: 18px;
    height: 18px;
    margin-right: 8px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 14px;
}

.mmain-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.mcontent-header {
    padding: 16px 32px;
    border-bottom: 1px solid var(--border);
    background: #fff;
    flex-shrink: 0;
}

.mpage-title {
    font-size: 28px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 4px;
}

.mpage-meta {
    font-size: 13px;
    color: var(--text-muted);
}

.mcontent-editor {
    flex: 1;
    padding: 32px;
    overflow-y: auto;
    max-width: 820px;
    margin: 0 auto;
    width: 100%;
}

.editor-content {
    outline: none;
    min-height: 100%;
}

.editor-content h1 {
    margin-top: 28px;
    margin-bottom: 12px;
    font-weight: 700;
    font-size: 26px;
}

.editor-content h2 {
    font-size: 22px;
    margin-top: 24px;
    margin-bottom: 10px;
    font-weight: 700;
}

.editor-content h3 {
    font-size: 18px;
    margin-top: 20px;
    margin-bottom: 8px;
    font-weight: 700;
}

.editor-content p {
    margin-bottom: 12px;
    font-size: 15px;
    line-height: 1.7;
}

.editor-content ul,
.editor-content ol {
    margin-left: 20px;
    margin-bottom: 12px;
}

.editor-content li {
    margin-bottom: 6px;
    font-size: 15px;
}

.editor-content a {
    color: var(--primary);
    text-decoration: none;
}

.editor-content a:hover {
    text-decoration: underline;
}

.format-toolbar {
    position: sticky;
    top: 0;
    background: #fff;
    border-bottom: 1px solid var(--border);
    padding: 6px 16px;
    display: flex;
    gap: 6px;
    flex-wrap: wrap;
    z-index: 10;
}

.format-button {
    background: none;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 5px 10px;
    cursor: pointer;
    font-size: 13px;
    color: var(--text-primary);
    transition: var(--transition);
    font-weight: 500;
}

.format-button:hover {
    background: var(--border-light);
    border-color: var(--text-muted);
}

.format-button.active {
    background: var(--border-light);
    border-color: var(--text-muted);
}

@media (max-width: 768px) {
    .msidebar {
        width: 56px;
    }

    .msidebar-section-title,
    .msidebar-item-text {
        display: none;
    }

    .mcontent-header,
    .mcontent-editor {
        padding: 16px;
    }
}

/* ========== 滚动条 ========== */
::-webkit-scrollbar {
    width: 6px;
    height: 6px;
}

::-webkit-scrollbar-track {
    background: transparent;
}

::-webkit-scrollbar-thumb {
    background: #cbd5e1;
    border-radius: 3px;
}

::-webkit-scrollbar-thumb:hover {
    background: #94a3b8;
}

/* ========== 响应式 ========== */
@media (max-width: 900px) {
    .sidebar {
        width: 200px;
    }

    .tools-main {
        padding: 20px;
    }
}

@media (max-width: 640px) {
    body.tools-layout {
        flex-direction: column;
    }

    .sidebar {
        width: 100%;
        min-height: auto;
        position: static;
        padding: 8px 0;
        flex-direction: row;
        flex-wrap: wrap;
        overflow-x: auto;
    }

    .sidebar-brand {
        padding: 0 16px 8px;
        margin-bottom: 0;
        border-bottom: none;
        border-right: 1px solid rgba(255, 255, 255, 0.08);
    }

    .sidebar-cat {
        margin-bottom: 0;
        display: flex;
        align-items: center;
    }

    .sidebar-cat-title {
        padding: 0 8px 0 12px;
        margin-bottom: 0;
        white-space: nowrap;
    }

    .sidebar-link {
        padding: 6px 12px;
        white-space: nowrap;
    }

    .tools-main {
        padding: 16px;
    }

    .container {
        max-width: 100%;
    }

    .card,
    .panel {
        padding: 16px;
    }

    .buttons,
    .action-bar,
    .action-btns,
    .button-container {
        justify-content: stretch;
    }

    .btn,
    .btn-primary,
    .btn-danger,
    .primary-button,
    .secondary-button {
        flex: 1;
        min-width: 0;
    }
}