/**
 * layout.css - PDF轻量工具箱特定布局
 * 扁平风格：纯色、边框优先、圆角克制
 */

/* ===== 容器 ===== */
.pdf-container {
    max-width: 760px;
    margin: 0 auto;
    padding: 20px 16px;
}

/* ===== 头部 ===== */
.pdf-header {
    text-align: center;
    margin-bottom: 24px;
}
.pdf-header h1 {
    font-size: 24px;
    font-weight: 700;
    color: var(--tool-text);
    margin-bottom: 8px;
}
.pdf-header p {
    font-size: 14px;
    color: var(--tool-text-muted);
}

/* ===== 标签页 ===== */
.pdf-tabs {
    display: flex;
    gap: 4px;
    margin-bottom: 20px;
    background: var(--tool-bg-secondary);
    padding: 4px;
    border-radius: var(--tool-radius);
    overflow-x: auto;
}
.pdf-tab {
    flex: 1;
    min-width: 80px;
    padding: 10px 12px;
    font-size: 13px;
    font-weight: 600;
    color: var(--tool-text-muted);
    cursor: pointer;
    border: none;
    border-radius: var(--tool-radius-sm);
    background: transparent;
    transition: all 0.15s;
    white-space: nowrap;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 5px;
}
.pdf-tab:hover {
    color: var(--tool-text-secondary);
}
.pdf-tab.active {
    background: var(--tool-bg);
    color: var(--tool-primary);
    box-shadow: 0 1px 3px rgba(0,0,0,0.08);
}
.pdf-tab i {
    font-size: 14px;
}

/* ===== 面板 ===== */
.pdf-pane {
    display: none;
}
.pdf-pane.active {
    display: block;
}

/* ===== 卡片 ===== */
.pdf-card {
    background: var(--tool-bg);
    border: 1px solid var(--tool-border);
    border-radius: var(--tool-radius-lg);
    padding: 24px;
}
.pdf-card-title {
    font-size: 17px;
    font-weight: 700;
    color: var(--tool-text);
    margin-bottom: 6px;
    display: flex;
    align-items: center;
    gap: 8px;
}
.pdf-card-desc {
    font-size: 13px;
    color: var(--tool-text-muted);
    margin-bottom: 20px;
}

/* ===== 上传区域 ===== */
.pdf-upload-area {
    border: 2px dashed var(--tool-input-border);
    border-radius: var(--tool-radius);
    padding: 36px 20px;
    text-align: center;
    cursor: pointer;
    transition: all 0.15s;
    background: var(--tool-bg-secondary);
    margin-bottom: 16px;
}
.pdf-upload-area:hover,
.pdf-upload-area.dragover {
    border-color: var(--tool-primary);
    background: var(--tool-primary-light);
}
.pdf-upload-area i {
    font-size: 36px;
    color: var(--tool-text-muted);
    margin-bottom: 12px;
    display: block;
}
.pdf-upload-area:hover i,
.pdf-upload-area.dragover i {
    color: var(--tool-primary);
}
.pdf-upload-area p {
    font-size: 14px;
    color: var(--tool-text-secondary);
    margin-bottom: 4px;
}
.pdf-upload-hint {
    font-size: 12px !important;
    color: var(--tool-text-muted) !important;
}

/* ===== 文件列表 ===== */
.pdf-file-list {
    margin-bottom: 16px;
}
.pdf-file-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 14px;
    background: var(--tool-bg-secondary);
    border: 1px solid var(--tool-border-light);
    border-radius: var(--tool-radius);
    margin-bottom: 8px;
}
.pdf-file-icon {
    width: 36px;
    height: 36px;
    background: var(--tool-danger-light);
    color: var(--tool-danger);
    border-radius: var(--tool-radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 16px;
    flex-shrink: 0;
}
.pdf-file-info {
    flex: 1;
    min-width: 0;
}
.pdf-file-name {
    font-size: 14px;
    font-weight: 600;
    color: var(--tool-text);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}
.pdf-file-meta {
    font-size: 12px;
    color: var(--tool-text-muted);
    margin-top: 2px;
}
.pdf-file-remove {
    width: 28px;
    height: 28px;
    border: none;
    background: transparent;
    color: var(--tool-text-muted);
    cursor: pointer;
    border-radius: var(--tool-radius-sm);
    transition: all 0.15s;
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: center;
}
.pdf-file-remove:hover {
    background: var(--tool-danger-light);
    color: var(--tool-danger);
}

/* ===== 表单 ===== */
.pdf-form-group {
    margin-bottom: 16px;
}
.pdf-form-group label {
    display: block;
    font-size: 13px;
    font-weight: 600;
    color: var(--tool-text-secondary);
    margin-bottom: 8px;
}
.pdf-input {
    width: 100%;
    padding: 10px 14px;
    border: 1px solid var(--tool-input-border);
    border-radius: var(--tool-radius);
    font-size: 14px;
    background: var(--tool-bg);
    color: var(--tool-text);
    outline: none;
    transition: border-color 0.15s, box-shadow 0.15s;
}
.pdf-input:focus {
    border-color: var(--tool-primary);
    box-shadow: 0 0 0 3px rgba(37,99,235,0.1);
}
.pdf-color-input {
    height: 42px;
    padding: 4px;
    cursor: pointer;
}
.pdf-form-row {
    display: flex;
    gap: 16px;
    margin-bottom: 16px;
}
.pdf-form-row .pdf-form-group {
    margin-bottom: 0;
}
.pdf-hint {
    font-size: 12px;
    color: var(--tool-text-muted);
    margin-top: 6px;
}

/* ===== 单选 ===== */
.pdf-radio {
    display: flex;
    align-items: center;
    gap: 8px;
    cursor: pointer;
    font-size: 14px;
    color: var(--tool-text-secondary);
    padding: 10px 14px;
    border: 1px solid var(--tool-input-border);
    border-radius: var(--tool-radius);
    flex: 1;
    transition: all 0.15s;
}
.pdf-radio:hover {
    border-color: var(--tool-primary);
}
.pdf-radio input[type="radio"] {
    accent-color: var(--tool-primary);
}
.pdf-radio:has(input:checked) {
    border-color: var(--tool-primary);
    background: var(--tool-primary-light);
    color: var(--tool-primary);
}

/* ===== 滑块 ===== */
.pdf-range {
    width: 100%;
    height: 6px;
    -webkit-appearance: none;
    appearance: none;
    background: var(--tool-input-border);
    border-radius: 3px;
    outline: none;
    cursor: pointer;
}
.pdf-range::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 18px;
    height: 18px;
    background: var(--tool-primary);
    border-radius: 50%;
    cursor: pointer;
    transition: transform 0.15s;
}
.pdf-range::-webkit-slider-thumb:hover {
    transform: scale(1.15);
}
.pdf-range::-moz-range-thumb {
    width: 18px;
    height: 18px;
    background: var(--tool-primary);
    border-radius: 50%;
    cursor: pointer;
    border: none;
}

/* ===== 按钮 ===== */
.pdf-actions {
    display: flex;
    gap: 12px;
    margin-top: 20px;
}
.pdf-btn {
    padding: 11px 24px;
    border-radius: var(--tool-radius);
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.15s;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    justify-content: center;
}
.pdf-btn-primary {
    background: var(--tool-primary);
    color: #fff;
    border: 1px solid var(--tool-primary);
}
.pdf-btn-primary:hover:not(:disabled) {
    background: var(--tool-primary-dark);
    border-color: var(--tool-primary-dark);
}
.pdf-btn-primary:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}
.pdf-btn-outline {
    background: var(--tool-bg);
    color: var(--tool-text-secondary);
    border: 1px solid var(--tool-input-border);
}
.pdf-btn-outline:hover {
    border-color: var(--tool-primary);
    color: var(--tool-primary);
}

/* ===== 结果区域 ===== */
.pdf-result {
    margin-top: 20px;
}
.pdf-result-card {
    background: var(--tool-success-light);
    border: 1px solid var(--tool-success);
    border-radius: var(--tool-radius);
    padding: 16px;
    margin-bottom: 12px;
}
.pdf-result-title {
    font-size: 14px;
    font-weight: 600;
    color: var(--tool-success-dark);
    margin-bottom: 10px;
    display: flex;
    align-items: center;
    gap: 8px;
}
.pdf-result-info {
    font-size: 13px;
    color: var(--tool-text-secondary);
    margin-bottom: 12px;
    line-height: 1.8;
}
.pdf-result-info strong {
    color: var(--tool-text);
}
.pdf-download-btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 8px 18px;
    background: var(--tool-success);
    color: #fff;
    border-radius: var(--tool-radius-sm);
    text-decoration: none;
    font-size: 13px;
    font-weight: 600;
    transition: background 0.15s;
}
.pdf-download-btn:hover {
    background: #16a34a;
}

/* 多文件结果网格 */
.pdf-result-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 10px;
    margin-top: 12px;
}
.pdf-result-item {
    background: var(--tool-bg);
    border: 1px solid var(--tool-border);
    border-radius: var(--tool-radius);
    padding: 12px;
    display: flex;
    align-items: center;
    gap: 10px;
}
.pdf-result-item-icon {
    width: 32px;
    height: 32px;
    background: var(--tool-primary-light);
    color: var(--tool-primary);
    border-radius: var(--tool-radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 14px;
    flex-shrink: 0;
}
.pdf-result-item-info {
    flex: 1;
    min-width: 0;
}
.pdf-result-item-name {
    font-size: 12px;
    font-weight: 600;
    color: var(--tool-text);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}
.pdf-result-item-meta {
    font-size: 11px;
    color: var(--tool-text-muted);
}
.pdf-result-item-dl {
    width: 28px;
    height: 28px;
    background: var(--tool-primary);
    color: #fff;
    border-radius: var(--tool-radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    text-decoration: none;
    font-size: 12px;
    flex-shrink: 0;
    transition: background 0.15s;
}
.pdf-result-item-dl:hover {
    background: var(--tool-primary-dark);
}

/* ===== 提示框 ===== */
.pdf-notice {
    background: var(--tool-warning-light);
    border: 1px solid var(--tool-warning);
    border-radius: var(--tool-radius);
    padding: 14px 16px;
    font-size: 13px;
    color: var(--tool-warning-dark);
    margin-bottom: 16px;
    display: flex;
    align-items: flex-start;
    gap: 10px;
    line-height: 1.6;
}
.pdf-notice i {
    margin-top: 2px;
    flex-shrink: 0;
}

/* ===== 底部 ===== */
.pdf-footer {
    text-align: center;
    padding: 24px 0;
    font-size: 12px;
    color: var(--tool-text-muted);
}

/* ===== 加载遮罩 ===== */
.pdf-loading-mask {
    display: none;
    position: fixed;
    top: 0; left: 0; right: 0; bottom: 0;
    background: rgba(0,0,0,0.5);
    z-index: 9999;
    align-items: center;
    justify-content: center;
}
.pdf-loading-mask.active {
    display: flex;
}
.pdf-loading-box {
    background: var(--tool-bg);
    border-radius: var(--tool-radius-lg);
    padding: 32px 48px;
    text-align: center;
    box-shadow: 0 10px 40px rgba(0,0,0,0.2);
}
.pdf-loading-box i {
    font-size: 36px;
    color: var(--tool-primary);
    margin-bottom: 16px;
}
.pdf-loading-box p {
    font-size: 14px;
    color: var(--tool-text-secondary);
}

/* ===== 响应式 ===== */
@media (max-width: 600px) {
    .pdf-form-row {
        flex-direction: column;
    }
    .pdf-actions {
        flex-direction: column;
    }
    .pdf-btn {
        width: 100%;
    }
    .pdf-card {
        padding: 16px;
    }
    .pdf-tab {
        font-size: 12px;
        padding: 8px 8px;
    }
    .pdf-tab i {
        display: none;
    }
}