/* Apple-style Minimalist Design */

:root {
    --bg-primary: #f5f5f7;
    --bg-card: #ffffff;
    --bg-secondary: #fafafa;
    --text-primary: #1d1d1f;
    --text-secondary: #86868b;
    --accent-blue: #0071e3;
    --accent-blue-hover: #0077ed;
    --accent-green: #34c759;
    --accent-green-hover: #30b350;
    --border-color: #d2d2d7;
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.04);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.08);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.12);
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 18px;
    --transition: all 0.3s cubic-bezier(0.25, 0.1, 0.25, 1);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'SF Pro Display', 'SF Pro Text', 'Helvetica Neue', Helvetica, Arial, sans-serif;
    background: var(--bg-primary);
    min-height: 100vh;
    padding: 16px;
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

.container {
    max-width: 980px;
    margin: 0 auto;
    padding: 0 16px;
}

h1 {
    text-align: center;
    color: var(--text-primary);
    margin-bottom: 24px;
    font-size: clamp(28px, 5vw, 48px);
    font-weight: 600;
    letter-spacing: -0.02em;
}

.card {
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    padding: 24px;
    margin-bottom: 16px;
    box-shadow: var(--shadow-sm);
}

.card-title {
    font-size: 20px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 16px;
    letter-spacing: -0.01em;
}

.card-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 20px;
    flex-wrap: wrap;
    gap: 16px;
}

.header-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    align-items: center;
}

.input-group {
    margin-bottom: 20px;
}

.input-label {
    display: block;
    font-weight: 500;
    color: var(--text-primary);
    margin-bottom: 8px;
    font-size: 14px;
}

.platform-select {
    width: 100%;
    padding: 14px 16px;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    font-size: 16px;
    background: var(--bg-card);
    cursor: pointer;
    transition: var(--transition);
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%2386868b' d='M6 9L1 4h10z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 16px center;
    padding-right: 40px;
}

.platform-select:focus {
    outline: none;
    border-color: var(--accent-blue);
    box-shadow: 0 0 0 4px rgba(0, 113, 227, 0.15);
}

.file-upload-area {
    border: 2px dashed var(--border-color);
    border-radius: var(--radius-md);
    padding: 40px 20px;
    text-align: center;
    cursor: pointer;
    transition: var(--transition);
    background: var(--bg-secondary);
}

.file-upload-area:hover {
    border-color: var(--accent-blue);
    background: var(--bg-card);
}

.file-upload-area.dragover {
    border-color: var(--accent-blue);
    background: rgba(0, 113, 227, 0.05);
}

.file-upload-icon {
    font-size: 48px;
    margin-bottom: 12px;
    opacity: 0.6;
}

.file-upload-text {
    color: var(--text-primary);
    font-size: 16px;
    font-weight: 500;
}

.file-upload-hint {
    color: var(--text-secondary);
    font-size: 14px;
    margin-top: 6px;
}

#fileInput {
    display: none;
}

#fileInfo {
    margin-top: 12px;
    font-size: 14px;
    color: var(--accent-green);
}

.input-mode-tabs {
    display: flex;
    gap: 8px;
    margin-bottom: 20px;
    background: var(--bg-secondary);
    padding: 4px;
    border-radius: var(--radius-md);
}

.tab {
    flex: 1;
    padding: 12px 20px;
    cursor: pointer;
    border: none;
    background: none;
    font-size: 15px;
    color: var(--text-secondary);
    border-radius: var(--radius-sm);
    transition: var(--transition);
    font-weight: 500;
}

.tab:hover {
    color: var(--text-primary);
}

.tab.active {
    background: var(--bg-card);
    color: var(--text-primary);
    box-shadow: var(--shadow-sm);
}

.tab-content {
    display: none;
}

.tab-content.active {
    display: block;
}

textarea {
    width: 100%;
    min-height: 180px;
    padding: 14px 16px;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    font-family: 'SF Mono', Monaco, 'Cascadia Code', 'Roboto Mono', Consolas, 'Courier New', monospace;
    font-size: 14px;
    resize: vertical;
    transition: var(--transition);
    background: var(--bg-secondary);
}

textarea:focus {
    outline: none;
    border-color: var(--accent-blue);
    background: var(--bg-card);
    box-shadow: 0 0 0 4px rgba(0, 113, 227, 0.15);
}

.btn-group {
    display: flex;
    gap: 12px;
    margin-top: 20px;
    flex-wrap: wrap;
}

button {
    padding: 14px 24px;
    border: none;
    border-radius: var(--radius-md);
    font-size: 15px;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
}

.btn-convert {
    background: var(--accent-blue);
    color: white;
}

.btn-convert:hover {
    background: var(--accent-blue-hover);
    transform: translateY(-1px);
}

.btn-clear {
    background: var(--bg-secondary);
    color: var(--text-primary);
}

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

.btn-export {
    background: var(--accent-green);
    color: white;
    padding: 12px 20px;
    font-size: 14px;
}

.btn-export:hover {
    background: var(--accent-green-hover);
    transform: translateY(-1px);
}

.btn-export:disabled {
    background: var(--border-color);
    color: var(--text-secondary);
    cursor: not-allowed;
    transform: none;
}

.btn-export-all {
    background: var(--accent-blue);
    color: white;
    padding: 12px 20px;
    font-size: 14px;
}

.btn-export-all:hover {
    background: var(--accent-blue-hover);
    transform: translateY(-1px);
}

.error {
    background: rgba(255, 59, 48, 0.1);
    color: #ff3b30;
    padding: 14px 16px;
    border-radius: var(--radius-md);
    margin-top: 16px;
    font-size: 14px;
}

.success {
    background: rgba(52, 199, 89, 0.1);
    color: var(--accent-green);
    padding: 14px 16px;
    border-radius: var(--radius-md);
    margin-top: 16px;
    font-size: 14px;
}

.warning {
    background: rgba(255, 149, 0, 0.1);
    color: #ff9500;
    padding: 14px 16px;
    border-radius: var(--radius-md);
    margin-top: 16px;
    font-size: 14px;
}

.stats {
    display: flex;
    gap: 12px;
    margin-bottom: 20px;
    flex-wrap: wrap;
}

.stat-item {
    background: var(--bg-secondary);
    padding: 10px 16px;
    border-radius: var(--radius-sm);
    font-size: 14px;
}

.stat-label {
    color: var(--text-secondary);
    margin-right: 6px;
}

.stat-value {
    color: var(--text-primary);
    font-weight: 600;
}

.platform-detected {
    display: inline-block;
    background: var(--accent-green);
    color: white;
    padding: 4px 10px;
    border-radius: var(--radius-sm);
    font-size: 12px;
    font-weight: 500;
    margin-left: 10px;
}

/* 数据表格 */
.table-container {
    overflow-x: auto;
    margin-top: 16px;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
}

.data-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 14px;
}

.data-table th,
.data-table td {
    padding: 14px 16px;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
}

.data-table th {
    background: var(--bg-secondary);
    font-weight: 600;
    color: var(--text-primary);
    position: sticky;
    top: 0;
    white-space: nowrap;
}

.data-table tbody tr {
    transition: background-color 0.2s ease;
}

.data-table tbody tr:hover {
    background: var(--bg-secondary);
}

.data-table tbody tr.selected {
    background: rgba(0, 113, 227, 0.08);
}

.data-table input[type="checkbox"] {
    width: 18px;
    height: 18px;
    cursor: pointer;
    accent-color: var(--accent-blue);
}

.select-all-label {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 14px;
    color: var(--text-primary);
    cursor: pointer;
    user-select: none;
}

.select-all-label input[type="checkbox"] {
    width: 18px;
    height: 18px;
    cursor: pointer;
    accent-color: var(--accent-blue);
}

.favorite-badge {
    display: inline-block;
    color: #ff9500;
    font-size: 18px;
}

.favorite-empty {
    color: var(--border-color);
}

.tags-container {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
}

.tag-badge {
    background: var(--bg-secondary);
    color: var(--accent-blue);
    padding: 4px 10px;
    border-radius: var(--radius-sm);
    font-size: 12px;
    font-weight: 500;
}

/* 分页 */
.pagination {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 20px;
    padding-top: 16px;
    border-top: 1px solid var(--border-color);
    flex-wrap: wrap;
    gap: 12px;
}

.pagination-info {
    font-size: 14px;
    color: var(--text-secondary);
}

.pagination-controls {
    display: flex;
    align-items: center;
    gap: 4px;
}

.page-btn {
    padding: 8px 12px;
    border: 1px solid var(--border-color);
    background: var(--bg-card);
    border-radius: var(--radius-sm);
    cursor: pointer;
    font-size: 14px;
    transition: var(--transition);
    min-width: 36px;
}

.page-btn:hover:not(:disabled) {
    background: var(--bg-secondary);
    border-color: var(--accent-blue);
}

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

.page-numbers {
    display: flex;
    gap: 4px;
}

.page-number {
    padding: 8px 12px;
    border: 1px solid transparent;
    background: transparent;
    border-radius: var(--radius-sm);
    cursor: pointer;
    font-size: 14px;
    min-width: 36px;
    text-align: center;
    transition: var(--transition);
}

.page-number:hover {
    background: var(--bg-secondary);
}

.page-number.active {
    background: var(--accent-blue);
    color: white;
}

.page-ellipsis {
    padding: 8px 4px;
    color: var(--text-secondary);
}

/* 导出按钮组 */
.export-actions {
    display: flex;
    gap: 12px;
    align-items: center;
    flex-wrap: wrap;
}

/* 移动端适配 */
@media (max-width: 768px) {
    body {
        padding: 12px;
    }

    .container {
        padding: 0 8px;
    }

    h1 {
        margin-bottom: 20px;
        font-size: 28px;
    }

    .card {
        padding: 20px 16px;
        border-radius: var(--radius-md);
    }

    .card-title {
        font-size: 18px;
        margin-bottom: 12px;
    }

    .card-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 12px;
    }

    .header-actions {
        width: 100%;
        flex-direction: column;
        align-items: stretch;
    }

    .export-actions {
        width: 100%;
    }

    .export-actions button {
        flex: 1;
    }

    .btn-group {
        flex-direction: column;
    }

    .btn-group button {
        width: 100%;
    }

    .platform-select {
        font-size: 16px;
        padding: 16px;
    }

    .file-upload-area {
        padding: 32px 20px;
    }

    .file-upload-icon {
        font-size: 40px;
    }

    .file-upload-text {
        font-size: 15px;
    }

    /* 表格移动端适配 - 使用卡片式布局 */
    .table-container {
        border: none;
    }

    .data-table thead {
        display: none;
    }

    .data-table tbody {
        display: flex;
        flex-direction: column;
        gap: 12px;
    }

    .data-table tbody tr {
        display: flex;
        flex-direction: column;
        border: 1px solid var(--border-color);
        border-radius: var(--radius-md);
        padding: 16px;
        gap: 8px;
    }

    .data-table tbody tr.selected {
        border-color: var(--accent-blue);
        background: rgba(0, 113, 227, 0.04);
    }

    .data-table tbody tr:hover {
        background: var(--bg-card);
    }

    .data-table tbody td {
        padding: 0;
        border: none;
        display: flex;
        justify-content: space-between;
        align-items: center;
    }

    .data-table tbody td::before {
        content: attr(data-label);
        font-weight: 600;
        color: var(--text-secondary);
        font-size: 13px;
    }

    .data-table tbody td input[type="checkbox"] {
        align-self: flex-start;
    }

    /* 分页移动端 */
    .pagination {
        flex-direction: column;
        align-items: center;
        gap: 16px;
    }

    .pagination-controls {
        width: 100%;
        justify-content: center;
    }

    .page-btn {
        padding: 10px 14px;
    }

    .stats {
        justify-content: center;
    }

    .input-mode-tabs {
        flex-direction: row;
    }
}

@media (max-width: 480px) {
    .stat-item {
        width: 100%;
        text-align: center;
    }

    .select-all-label {
        width: 100%;
        justify-content: center;
        padding: 12px;
        background: var(--bg-secondary);
        border-radius: var(--radius-sm);
    }
}

/* 触摸设备优化 */
@media (hover: none) and (pointer: coarse) {
    .tab:hover,
    .page-number:hover,
    button:hover {
        transform: none;
    }

    .tab:active {
        transform: scale(0.98);
    }

    button:active {
        transform: scale(0.98);
    }
}