/* ==================== 全局样式和变量 ==================== */
:root {
    /* 颜色变量 */
    --primary-color: #1976d2;
    --primary-hover: #1565c0;
    --primary-active: #0d47a1;
    --secondary-color: #616161;
    --secondary-hover: #424242;
    --success-color: #43a047;
    --success-hover: #388e3c;
    --error-color: #e53935;
    --error-bg: #ffebee;
    --success-bg: #e8f5e9;
    --warning-bg: #fff3e0;
    
    /* 背景和文字颜色 */
    --bg-primary: #ffffff;
    --bg-secondary: #f5f5f5;
    --bg-tertiary: #e0e0e0;
    --text-primary: #212121;
    --text-secondary: #757575;
    --text-light: #9e9e9e;
    
    /* 边框和阴影 */
    --border-color: #e0e0e0;
    --border-radius: 4px;
    --box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    --box-shadow-hover: 0 4px 8px rgba(0, 0, 0, 0.15);
    
    /* 字体 */
    --font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    --font-mono: 'Consolas', 'Monaco', 'Courier New', monospace;
    
    /* 间距 */
    --spacing-xs: 4px;
    --spacing-sm: 8px;
    --spacing-md: 12px;
    --spacing-lg: 16px;
    --spacing-xl: 24px;
}

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

body {
    font-family: var(--font-family);
    font-size: 14px;
    line-height: 1.5;
    color: var(--text-primary);
    background-color: var(--bg-secondary);
    overflow: hidden;
}

/* ==================== 主容器布局 ==================== */
.container {
    display: flex;
    height: 100vh;
    width: 100%;
}

/* 左侧边栏 */
.sidebar-left {
    width: 240px;
    background-color: var(--bg-primary);
    border-right: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    overflow-y: auto;
}

.logo {
    padding: var(--spacing-xl);
    border-bottom: 1px solid var(--border-color);
}

.logo h1 {
    font-size: 20px;
    color: var(--primary-color);
    font-weight: 600;
}

/* 中间主工作区 */
.main-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.workspace {
    flex: 1;
    display: flex;
    flex-direction: row;
    padding: var(--spacing-lg);
    gap: var(--spacing-lg);
    overflow: hidden;
}

.input-section,
.output-section {
    flex: 1;
    display: flex;
    flex-direction: column;
    background-color: var(--bg-primary);
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    overflow: hidden;
    min-width: 0;
}

.section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-md) var(--spacing-lg);
    background-color: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
}

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

/* 右侧边栏 */
.sidebar-right {
    width: 260px;
    background-color: var(--bg-primary);
    border-left: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    overflow-y: auto;
}

/* ==================== 控制区域样式 ==================== */
.control-section {
    padding: var(--spacing-lg);
    border-bottom: 1px solid var(--border-color);
}

.control-section h3 {
    font-size: 14px;
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-md);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.control-section .btn {
    width: 100%;
    margin-bottom: var(--spacing-sm);
}

.config-item {
    margin-bottom: var(--spacing-md);
}

.config-item label {
    display: block;
    font-size: 13px;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-xs);
}

.config-item select {
    width: 100%;
    padding: var(--spacing-sm);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    font-size: 14px;
    background-color: var(--bg-primary);
    cursor: pointer;
    transition: border-color 0.2s;
}

.config-item select:hover {
    border-color: var(--primary-color);
}

.config-item select:focus {
    outline: none;
    border-color: var(--primary-color);
}

/* ==================== 按钮样式 ==================== */
.btn {
    padding: var(--spacing-md) var(--spacing-lg);
    border: none;
    border-radius: var(--border-radius);
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
}

.btn .icon {
    font-size: 16px;
}

.btn-primary {
    background-color: var(--primary-color);
    color: white;
}

.btn-primary:hover {
    background-color: var(--primary-hover);
    box-shadow: var(--box-shadow-hover);
}

.btn-primary:active {
    background-color: var(--primary-active);
    transform: translateY(1px);
}

.btn-secondary {
    background-color: var(--secondary-color);
    color: white;
}

.btn-secondary:hover {
    background-color: var(--secondary-hover);
    box-shadow: var(--box-shadow-hover);
}

.btn-success {
    background-color: var(--success-color);
    color: white;
}

.btn-success:hover {
    background-color: var(--success-hover);
    box-shadow: var(--box-shadow-hover);
}

.btn-small {
    padding: var(--spacing-sm) var(--spacing-md);
    font-size: 13px;
}

.btn:disabled {
    background-color: var(--bg-tertiary);
    color: var(--text-light);
    cursor: not-allowed;
    opacity: 0.6;
}

/* ==================== 文本区域样式 ==================== */
.json-textarea {
    flex: 1;
    width: 100%;
    padding: var(--spacing-md);
    border: none;
    resize: none;
    font-family: var(--font-mono);
    font-size: 14px;
    line-height: 1.5;
    background-color: var(--bg-secondary);
    color: var(--text-primary);
}

.json-textarea:focus {
    outline: none;
}

.json-textarea::placeholder {
    color: var(--text-light);
}

/* ==================== 输出区域样式 ==================== */
.json-output,
.tree-output {
    flex: 1;
    padding: var(--spacing-md);
    overflow: auto;
    font-family: var(--font-mono);
    font-size: 14px;
    line-height: 1.5;
    background-color: var(--bg-secondary);
}

.json-output pre {
    margin: 0;
    white-space: pre-wrap;
    word-wrap: break-word;
}

/* ==================== 视图模式切换 ==================== */
.view-mode-switch {
    display: flex;
    gap: var(--spacing-xs);
}

.mode-btn {
    padding: var(--spacing-xs) var(--spacing-md);
    border: 1px solid var(--border-color);
    background-color: var(--bg-primary);
    color: var(--text-secondary);
    font-size: 13px;
    cursor: pointer;
    border-radius: var(--border-radius);
    transition: all 0.2s;
}

.mode-btn:hover {
    background-color: var(--bg-secondary);
}

.mode-btn.active {
    background-color: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
}

/* ==================== 信息区域样式 ==================== */
.info-section {
    padding: var(--spacing-lg);
    border-bottom: 1px solid var(--border-color);
}

.info-section h3 {
    font-size: 14px;
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-md);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.info-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-sm);
    font-size: 13px;
}

.info-label {
    color: var(--text-secondary);
}

.status-badge {
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--border-radius);
    font-size: 12px;
    font-weight: 500;
}

.status-idle {
    background-color: var(--bg-tertiary);
    color: var(--text-secondary);
}

.status-valid {
    background-color: var(--success-bg);
    color: var(--success-color);
}

.status-invalid {
    background-color: var(--error-bg);
    color: var(--error-color);
}

/* ==================== 错误显示样式 ==================== */
.error-display {
    padding: var(--spacing-md);
    background-color: var(--error-bg);
    border-left: 3px solid var(--error-color);
    border-radius: var(--border-radius);
    color: var(--error-color);
    font-size: 13px;
    line-height: 1.6;
    animation: fadeIn 0.3s ease;
}

.error-display::before {
    content: '⚠️ ';
    font-weight: bold;
}

/* ==================== Toast 提示样式 ==================== */
.toast {
    position: fixed;
    bottom: var(--spacing-xl);
    right: var(--spacing-xl);
    padding: var(--spacing-md) var(--spacing-lg);
    background-color: #323232;
    color: white;
    border-radius: var(--border-radius);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
    font-size: 14px;
    opacity: 0;
    transform: translateY(20px);
    transition: all 0.3s ease;
    pointer-events: none;
    z-index: 1000;
}

.toast.show {
    opacity: 1;
    transform: translateY(0);
    pointer-events: auto;
}

.toast.success {
    background-color: var(--success-color);
}

.toast.error {
    background-color: var(--error-color);
}

/* ==================== 语法高亮样式 ==================== */
.json-key {
    color: #0066cc;
    font-weight: 500;
}

.json-string {
    color: #22863a;
}

.json-number {
    color: #e36209;
}

.json-boolean {
    color: #a626a4;
}

.json-null {
    color: #999999;
}

.json-symbol {
    color: #6f42c1;
}

/* ==================== 树形视图样式 ==================== */
.tree-node {
    margin-left: var(--spacing-lg);
    font-family: var(--font-mono);
}

.tree-node-root {
    margin-left: 0;
}

.tree-label {
    cursor: pointer;
    padding: var(--spacing-xs) 0;
    user-select: none;
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.tree-label:hover {
    background-color: rgba(0, 0, 0, 0.05);
}

.tree-toggle {
    display: inline-block;
    width: 12px;
    font-size: 12px;
    cursor: pointer;
}

.tree-toggle.collapsed::before {
    content: '▶';
}

.tree-toggle.expanded::before {
    content: '▼';
}

.tree-key {
    color: #0066cc;
    font-weight: 500;
}

.tree-type {
    color: #999999;
    font-size: 12px;
    font-style: italic;
}

.tree-value {
    margin-left: 20px;
}

.tree-value-string {
    color: #22863a;
}

.tree-value-number {
    color: #e36209;
}

.tree-value-boolean {
    color: #a626a4;
}

.tree-value-null {
    color: #999999;
}

.tree-children {
    display: block;
    animation: slideDown 0.3s ease;
}

.tree-children.collapsed {
    display: none;
}

/* ==================== 动画 ==================== */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes slideDown {
    from {
        opacity: 0;
        max-height: 0;
    }
    to {
        opacity: 1;
        max-height: 1000px;
    }
}

/* ==================== 响应式设计 ==================== */
@media (max-width: 1200px) {
    .sidebar-left {
        width: 200px;
    }
    
    .sidebar-right {
        width: 220px;
    }
}

@media (max-width: 992px) {
    .container {
        flex-direction: column;
    }
    
    .sidebar-left,
    .sidebar-right {
        width: 100%;
        border: none;
        border-bottom: 1px solid var(--border-color);
    }
    
    .sidebar-left {
        max-height: none;
        overflow-y: visible;
    }
    
    .sidebar-right {
        max-height: none;
        order: 3;
    }
    
    .main-content {
        order: 2;
        min-height: 60vh;
    }
    
    .control-section {
        display: flex;
        flex-wrap: wrap;
        gap: var(--spacing-sm);
        align-items: center;
    }
    
    .control-section h3 {
        width: 100%;
        margin-bottom: var(--spacing-xs);
    }
    
    .control-section .btn {
        display: inline-flex;
        width: auto;
        margin-bottom: 0;
        margin-right: 0;
    }
    
    .info-section {
        display: flex;
        flex-wrap: wrap;
        gap: var(--spacing-md);
        align-items: center;
    }
    
    .info-section h3 {
        width: 100%;
        margin-bottom: 0;
    }
    
    .info-section .btn {
        flex: 1;
        min-width: 120px;
    }
    
    .info-item {
        margin-bottom: 0;
    }
}

@media (max-width: 768px) {
    body {
        overflow: auto;
    }
    
    .container {
        min-height: 100vh;
        height: auto;
    }
    
    .workspace {
        padding: var(--spacing-sm);
        flex-direction: column;
        min-height: 400px;
    }
    
    .input-section,
    .output-section {
        min-height: 200px;
    }
    
    .logo {
        padding: var(--spacing-md);
    }
    
    .logo h1 {
        font-size: 18px;
    }
    
    .control-section,
    .info-section {
        padding: var(--spacing-md);
    }
    
    .view-mode-switch {
        flex-wrap: wrap;
    }
    
    .section-header {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--spacing-sm);
        padding: var(--spacing-sm) var(--spacing-md);
    }
    
    .section-header h2 {
        font-size: 14px;
    }
    
    .btn {
        padding: var(--spacing-sm) var(--spacing-md);
        font-size: 13px;
    }
    
    .btn-small {
        padding: var(--spacing-xs) var(--spacing-sm);
        font-size: 12px;
    }
    
    .json-textarea {
        font-size: 13px;
        min-height: 150px;
    }
    
    .json-output,
    .tree-output {
        font-size: 13px;
    }
    
    .config-item select {
        font-size: 13px;
    }
}

@media (max-width: 480px) {
    .logo h1 {
        font-size: 16px;
    }
    
    .control-section .btn,
    .info-section .btn {
        flex: 1 1 calc(50% - var(--spacing-sm));
        min-width: 0;
    }
    
    .btn-small {
        flex: 1 1 calc(33% - var(--spacing-sm));
    }
    
    .section-header h2 {
        font-size: 13px;
    }
    
    .mode-btn {
        padding: var(--spacing-xs) var(--spacing-sm);
        font-size: 12px;
    }
    
    .info-item {
        font-size: 12px;
        flex: 1 1 50%;
    }
    
    .status-badge {
        font-size: 11px;
        padding: 2px var(--spacing-xs);
    }
}

/* ==================== 滚动条样式 ==================== */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: var(--bg-secondary);
}

::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--text-light);
}