/* ============================================================
   common.css — 统一视觉风格（所有工具共用）
   ============================================================ */

/* ---------- CSS 变量（设计令牌） ---------- */
:root {
    --color-primary: #4a6cf7;
    --color-primary-light: #e8edff;
    --color-primary-dark: #3a56d4;
    --color-secondary: #6c8cff;
    --color-success: #27ae60;
    --color-warning: #e67e22;
    --color-danger: #eb3678;
    --color-bg: #f5f7fb;
    --color-surface: #ffffff;
    --color-text: #1a1a2e;
    --color-text-secondary: #6b7a8f;
    --color-text-light: #a0a8b8;
    --color-border: #e8ecf2;
    --radius-card: 12px;
    --radius-sm: 8px;
    --radius-full: 40px;
    --shadow-card: 0 2px 12px rgba(0, 0, 0, 0.06);
    --shadow-btn: 0 2px 6px rgba(74, 108, 247, 0.25);
    --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
        "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
    --transition: 0.18s ease;
}

/* ---------- 全局重置 & 基础 ---------- */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: var(--font);
    background: var(--color-bg);
    color: var(--color-text);
    min-height: 100vh;
    padding: 24px 16px;
    display: flex;
    justify-content: center;
    align-items: flex-start;
    line-height: 1.6;
}

/* 所有工具共用的容器卡片 */
.container,
.page,
.tool-container {
    width: 100%;
    max-width: 1000px;
    background: var(--color-surface);
    border-radius: var(--radius-card);
    box-shadow: var(--shadow-card);
    padding: 28px 32px;
    border: 1px solid var(--color-border);
    transition: all var(--transition);
}

/* ---------- 排版 ---------- */
h1 {
    font-size: 1.7rem;
    font-weight: 700;
    color: var(--color-text);
    letter-spacing: -0.3px;
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 6px;
}

h1 .icon {
    font-size: 1.8rem;
}

h2 {
    font-size: 1.3rem;
    font-weight: 600;
    color: var(--color-text);
    margin: 0 0 8px 0;
}

h3 {
    font-size: 1.05rem;
    font-weight: 600;
    color: var(--color-text);
    margin: 0 0 8px 0;
}

.subtitle {
    color: var(--color-text-secondary);
    font-size: 0.92rem;
    border-left: 3px solid var(--color-primary);
    padding-left: 12px;
    margin-bottom: 20px;
}

.badge {
    background: var(--color-primary-light);
    color: var(--color-primary-dark);
    font-size: 0.72rem;
    padding: 2px 12px;
    border-radius: 20px;
    font-weight: 500;
    display: inline-block;
    margin-left: 6px;
}

.badge.orange {
    background: #fef0e0;
    color: #c0721a;
}

/* ---------- 按钮 ---------- */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 22px;
    border: none;
    border-radius: var(--radius-sm);
    font-size: 0.9rem;
    font-weight: 600;
    font-family: inherit;
    cursor: pointer;
    transition: all var(--transition);
    text-decoration: none;
    letter-spacing: 0.2px;
    background: var(--color-surface);
    color: var(--color-text);
    border: 1px solid var(--color-border);
}

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

.btn:active {
    transform: scale(0.97);
}

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

.btn-primary:hover {
    background: var(--color-primary-dark);
    border-color: var(--color-primary-dark);
    box-shadow: 0 4px 12px rgba(74, 108, 247, 0.35);
}

.btn-secondary {
    background: var(--color-surface);
    color: var(--color-text);
    border: 1px solid var(--color-border);
}

.btn-secondary:hover {
    background: #f0f2f6;
    border-color: #d0d5e0;
}

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

.btn-success:hover {
    background: #1e8449;
    border-color: #1e8449;
}

.btn-danger {
    background: transparent;
    color: var(--color-danger);
    border: 1px solid var(--color-danger);
}

.btn-danger:hover {
    background: rgba(235, 54, 120, 0.08);
}

.btn-warning {
    background: var(--color-warning);
    color: #fff;
    border-color: var(--color-warning);
}

.btn-warning:hover {
    background: #cf7117;
    border-color: #cf7117;
}

.btn-group {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin: 16px 0;
}

/* ---------- 表单 & 输入 ---------- */
textarea,
input[type="text"],
input[type="file"] {
    width: 100%;
    font-family: inherit;
    font-size: 0.9rem;
    background: var(--color-surface);
    color: var(--color-text);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    padding: 12px 16px;
    transition: border-color var(--transition), box-shadow var(--transition);
    outline: none;
}

textarea:focus,
input[type="text"]:focus {
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(74, 108, 247, 0.12);
}

textarea {
    resize: vertical;
    min-height: 100px;
    line-height: 1.7;
    font-family: 'JetBrains Mono', 'Fira Code', 'Consolas', monospace;
}

textarea::placeholder,
input::placeholder {
    color: var(--color-text-light);
}

input[type="file"] {
    padding: 10px 0;
    border: none;
    background: transparent;
}

.label-hint {
    font-size: 0.82rem;
    color: var(--color-text-secondary);
    margin-top: 6px;
}

/* ---------- 卡片内部区块 ---------- */
.section {
    margin-bottom: 18px;
}

.section-title {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 10px;
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--color-text);
}

.card-block {
    background: var(--color-bg);
    border-radius: var(--radius-sm);
    padding: 16px 20px;
    border: 1px solid var(--color-border);
    margin-bottom: 14px;
}

.card-block.common-tags {
    border-left: 5px solid var(--color-primary);
    background: var(--color-primary-light);
}

.card-block.manual-tags {
    border-left: 5px solid var(--color-warning);
    background: #fef5e7;
}

/* ---------- 统计 & 标签 ---------- */
.stats {
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
    padding: 14px 18px;
    background: var(--color-bg);
    border-radius: var(--radius-sm);
    border: 1px solid var(--color-border);
    margin: 14px 0;
    font-size: 0.85rem;
}

.stat-item {
    display: flex;
    align-items: center;
    gap: 6px;
}

.stat-value {
    font-weight: 700;
    font-size: 1.05rem;
}

.stat-value.removed {
    color: var(--color-danger);
}
.stat-value.kept {
    color: var(--color-success);
}
.stat-value.total {
    color: var(--color-primary);
}

/* ---------- 文件结果列表 ---------- */
.file-result {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    padding: 12px 18px;
    margin-bottom: 12px;
    box-shadow: 0 1px 4px rgba(0, 0, 0, 0.03);
}

.file-result strong {
    display: inline-block;
    min-width: 140px;
    color: var(--color-text);
}

.file-result .tags {
    display: inline;
    word-break: break-word;
}

.file-result .stats-tip {
    font-size: 0.75rem;
    color: var(--color-text-light);
    margin-left: 8px;
}

/* ---------- 网格（过滤器用） ---------- */
.categories-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 10px;
    margin-bottom: 16px;
}

.category-toggle {
    display: flex;
    align-items: center;
    gap: 8px;
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    padding: 10px 14px;
    cursor: pointer;
    transition: all var(--transition);
    user-select: none;
    font-size: 0.88rem;
}

.category-toggle:hover {
    border-color: var(--color-primary);
    background: var(--color-primary-light);
}

.category-toggle input[type="checkbox"] {
    appearance: none;
    width: 18px;
    height: 18px;
    border: 2px solid #bcc4d4;
    border-radius: 5px;
    cursor: pointer;
    position: relative;
    flex-shrink: 0;
    transition: all var(--transition);
}

.category-toggle input[type="checkbox"]:checked {
    background: var(--color-primary);
    border-color: var(--color-primary);
}

.category-toggle input[type="checkbox"]:checked::after {
    content: '✓';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-size: 11px;
    color: #fff;
    font-weight: 700;
}

.category-toggle .emoji {
    font-size: 1.05rem;
}

/* ---------- 移除分组（过滤器用） ---------- */
.removed-groups {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 12px;
    margin-top: 12px;
}

.removed-group {
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    padding: 12px 14px;
}

.removed-group h4 {
    font-size: 0.82rem;
    font-weight: 600;
    color: var(--color-text-secondary);
    margin-bottom: 6px;
    display: flex;
    align-items: center;
    gap: 6px;
    text-transform: uppercase;
    letter-spacing: 0.3px;
}

.removed-group .tag-list {
    font-size: 0.78rem;
    color: var(--color-text);
    word-break: break-all;
    line-height: 1.5;
    max-height: 100px;
    overflow-y: auto;
}

/* ---------- 图片混淆专用 ---------- */
.img-wrapper {
    margin-top: 18px;
    background: var(--color-bg);
    border-radius: var(--radius-card);
    padding: 12px;
    box-shadow: inset 0 0 0 1px var(--color-border), 0 4px 16px rgba(0, 0, 0, 0.06);
}

#display-img {
    max-width: 100%;
    max-height: 65vh;
    border-radius: var(--radius-sm);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
    background: #fff;
    display: none;
    object-fit: contain;
}

.drag-hint {
    background: var(--color-primary-light);
    border: 2px dashed var(--color-primary);
    border-radius: var(--radius-card);
    padding: 12px 20px;
    margin: 12px auto 6px auto;
    display: inline-flex;
    align-items: center;
    gap: 10px;
    font-size: 0.85rem;
    color: var(--color-primary-dark);
    font-weight: 500;
    transition: all var(--transition);
    cursor: default;
}

.drag-hint svg {
    width: 20px;
    height: 20px;
    fill: none;
    stroke: currentColor;
    stroke-width: 2;
    stroke-linecap: round;
}

/* ---------- 导航页专用 ---------- */
.nav-list {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.nav-list a {
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 14px 18px;
    background: var(--color-bg);
    border-radius: var(--radius-sm);
    text-decoration: none;
    color: var(--color-text);
    font-size: 0.95rem;
    font-weight: 500;
    transition: all var(--transition);
    border: 1px solid transparent;
}

.nav-list a:hover {
    background: var(--color-primary-light);
    border-color: var(--color-primary);
    transform: translateX(4px);
}

.nav-list a:active {
    transform: scale(0.97);
}

.nav-list .icon {
    font-size: 1.25rem;
    width: 28px;
    text-align: center;
    flex-shrink: 0;
}

.nav-list .name {
    flex: 1;
}

.nav-list .arrow {
    color: var(--color-text-light);
    font-size: 0.85rem;
    flex-shrink: 0;
}

.foot {
    margin-top: 28px;
    padding-top: 16px;
    border-top: 1px solid var(--color-border);
    font-size: 0.7rem;
    color: var(--color-text-light);
    text-align: center;
    letter-spacing: 0.2px;
}

/* ---------- 辅助工具 ---------- */
.divider {
    height: 1px;
    background: var(--color-border);
    margin: 20px 0;
}

.copy-feedback {
    font-size: 0.8rem;
    color: var(--color-success);
    opacity: 0;
    transition: opacity var(--transition);
}

.copy-feedback.show {
    opacity: 1;
}

.example-btn {
    font-size: 0.78rem;
    padding: 5px 14px;
    border-radius: var(--radius-sm);
    background: transparent;
    border: 1px dashed var(--color-border);
    color: var(--color-text-secondary);
    cursor: pointer;
    transition: all var(--transition);
    font-family: inherit;
}

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

.count-badge {
    background: var(--color-primary);
    color: #fff;
    border-radius: 20px;
    padding: 0 12px;
    font-size: 0.82rem;
    display: inline-block;
    margin-left: 8px;
    font-weight: 600;
}

.count-badge.orange {
    background: var(--color-warning);
}

/* ---------- 响应式 ---------- */
@media (max-width: 640px) {
    body {
        padding: 12px 8px;
    }
    .container,
    .page,
    .tool-container {
        padding: 18px 14px;
    }
    h1 {
        font-size: 1.3rem;
    }
    .categories-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .btn-group {
        flex-direction: column;
    }
    .btn {
        justify-content: center;
    }
    .stats {
        flex-direction: column;
        gap: 6px;
    }
    .removed-groups {
        grid-template-columns: 1fr;
    }
    .file-result strong {
        display: block;
        min-width: unset;
        margin-bottom: 4px;
    }
    .nav-list a {
        padding: 12px 14px;
        font-size: 0.88rem;
    }
}

@media (max-width: 400px) {
    .container,
    .page,
    .tool-container {
        padding: 14px 10px;
    }
    .categories-grid {
        grid-template-columns: 1fr 1fr;
        gap: 6px;
    }
    .category-toggle {
        padding: 8px 10px;
        font-size: 0.8rem;
    }
}

/* ---------- 拖拽高亮 ---------- */
body.drag-over .container,
body.drag-over .page,
body.drag-over .tool-container {
    border: 2px solid var(--color-primary);
    background: #f8f4ff;
    transition: 0.08s linear;
}

/* ---------- 滚动条美化 ---------- */
::-webkit-scrollbar {
    width: 5px;
    height: 5px;
}
::-webkit-scrollbar-track {
    background: var(--color-bg);
}
::-webkit-scrollbar-thumb {
    background: #d0d5e0;
    border-radius: 10px;
}
::-webkit-scrollbar-thumb:hover {
    background: #b0b8c8;
}

/* ============================================================
   通用组件扩展（字幕提取器等工具共用）
   ============================================================ */

/* ---------- 拖拽上传区 ---------- */
.drop-zone {
    border: 2px dashed var(--color-border);
    border-radius: var(--radius-card);
    background: var(--color-bg);
    padding: 26px 20px;
    text-align: center;
    cursor: pointer;
    transition: all var(--transition);
    margin-bottom: 14px;
}
.drop-zone:hover,
.drop-zone.over {
    border-color: var(--color-primary);
    background: var(--color-primary-light);
}
.drop-zone .icon-lg {
    display: block;
    font-size: 2rem;
    line-height: 1;
    margin-bottom: 8px;
}
.drop-zone strong {
    color: var(--color-primary);
    font-size: 1rem;
    display: block;
}
.drop-zone p {
    margin-top: 6px;
    color: var(--color-text-secondary);
    font-size: 0.85rem;
}

/* ---------- 工具栏 ---------- */
.toolbar {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    align-items: center;
    margin: 18px 0 6px;
}

/* ---------- 通用下拉选择 ---------- */
select {
    font-family: inherit;
    font-size: 0.9rem;
    padding: 10px 14px;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    background: var(--color-surface);
    color: var(--color-text);
    cursor: pointer;
    outline: none;
    transition: all var(--transition);
    font-weight: 500;
}
select:focus {
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(74, 108, 247, 0.12);
}
select:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

/* ---------- 结果表格 ---------- */
.table-wrap {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    overflow: auto;
    max-height: 60vh;
    margin-top: 12px;
}
.table-wrap table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.88rem;
    white-space: nowrap;
}
.table-wrap thead th {
    position: sticky;
    top: 0;
    z-index: 1;
    background: var(--color-bg);
    text-align: left;
    padding: 11px 16px;
    font-weight: 600;
    color: var(--color-text-secondary);
    font-size: 0.82rem;
    letter-spacing: 0.2px;
    border-bottom: 1px solid var(--color-border);
}
.table-wrap tbody td {
    padding: 10px 16px;
    border-bottom: 1px solid var(--color-border);
    vertical-align: top;
}
.table-wrap tbody tr:last-child td {
    border-bottom: none;
}
.table-wrap tbody tr:hover {
    background: var(--color-bg);
}

.table-wrap td.idx {
    color: var(--color-text-light);
    width: 60px;
    text-align: right;
    font-variant-numeric: tabular-nums;
}
.table-wrap td.time {
    color: var(--color-primary);
    width: 130px;
    font-size: 0.82rem;
    font-family: 'JetBrains Mono', 'Fira Code', 'Consolas', monospace;
    font-variant-numeric: tabular-nums;
}
.table-wrap td.time-end {
    color: var(--color-success);
}
.table-wrap td.txt {
    white-space: normal;
    min-width: 260px;
}
.table-wrap .dur {
    color: var(--color-text-light);
    font-size: 0.75rem;
    margin-left: 6px;
}
.table-wrap .empty {
    text-align: center;
    color: var(--color-text-light);
    padding: 40px 16px !important;
    font-size: 0.88rem;
}

/* ---------- Toast 轻提示 ---------- */
.toast {
    position: fixed;
    left: 50%;
    bottom: 36px;
    transform: translateX(-50%) translateY(20px);
    background: var(--color-success);
    color: #fff;
    font-weight: 600;
    padding: 10px 22px;
    border-radius: var(--radius-full);
    font-size: 0.85rem;
    opacity: 0;
    pointer-events: none;
    transition: all 0.25s ease;
    box-shadow: 0 4px 16px rgba(39, 174, 96, 0.3);
    z-index: 999;
}
.toast.show {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
}

/* ---------- 统计数值补充 ---------- */
.stat-value.time {
    color: var(--color-primary);
    font-family: 'JetBrains Mono', 'Fira Code', 'Consolas', monospace;
    font-size: 0.95rem;
}