/* 基础样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-color: #2563eb;
    --primary-hover: #1d4ed8;
    --secondary-color: #64748b;
    --success-color: #10b981;
    --warning-color: #f59e0b;
    --error-color: #ef4444;
    --background-color: #f8fafc;
    --surface-color: #ffffff;
    --text-primary: #1e293b;
    --text-secondary: #64748b;
    --border-color: #e2e8f0;
    --shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px 0 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);
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    line-height: 1.6;
    color: var(--text-primary);
    background-color: var(--background-color);
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1rem;
}

/* 导航栏 */
.navbar {
    background: var(--surface-color);
    box-shadow: var(--shadow);
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 1000;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 64px;
}

.nav-logo {
    display: flex;
    align-items: center;
    font-size: 1.5rem;
    font-weight: bold;
    color: var(--primary-color);
}

.nav-logo i {
    margin-right: 0.5rem;
}

.nav-menu {
    display: flex;
    gap: 2rem;
}

.nav-link {
    text-decoration: none;
    color: var(--text-secondary);
    font-weight: 500;
    padding: 0.5rem 1rem;
    border-radius: 0.5rem;
    transition: all 0.2s;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.nav-link:hover,
.nav-link.active {
    color: var(--primary-color);
    background-color: rgba(37, 99, 235, 0.1);
}

.nav-toggle {
    display: none;
    flex-direction: column;
    cursor: pointer;
}

.bar {
    width: 25px;
    height: 3px;
    background-color: var(--text-primary);
    margin: 3px 0;
    transition: 0.3s;
}

/* 主要内容 */
.main-content {
    margin-top: 64px;
    min-height: calc(100vh - 64px);
}

.page {
    display: none;
    padding: 2rem 0;
}

.page.active {
    display: block;
}

.page-header {
    text-align: center;
    margin-bottom: 3rem;
    padding: 2rem 0;
}

.page-header h1 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.page-header p {
    font-size: 1.2rem;
    color: var(--text-secondary);
}

/* 首页样式 */
.hero-section {
    background: linear-gradient(135deg, var(--primary-color) 0%, #1e40af 100%);
    color: white;
    padding: 4rem 0;
    text-align: center;
}

.hero-content h1 {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.hero-content p {
    font-size: 1.2rem;
    margin-bottom: 2rem;
    opacity: 0.9;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}

.features-section {
    padding: 4rem 0;
}

.features-section h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 3rem;
    color: var(--text-primary);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.feature-card {
    background: var(--surface-color);
    padding: 2rem;
    border-radius: 1rem;
    box-shadow: var(--shadow);
    transition: all 0.3s;
    cursor: pointer;
    border: 1px solid var(--border-color);
}

.feature-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.feature-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--primary-color), #1e40af);
    border-radius: 1rem;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.5rem;
}

.feature-icon i {
    font-size: 1.5rem;
    color: white;
}

.feature-card h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.feature-card p {
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
}

.feature-tags {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.tag {
    background: rgba(37, 99, 235, 0.1);
    color: var(--primary-color);
    padding: 0.25rem 0.75rem;
    border-radius: 1rem;
    font-size: 0.875rem;
    font-weight: 500;
}

/* 按钮样式 */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: 0.5rem;
    font-size: 1rem;
    font-weight: 500;
    text-decoration: none;
    cursor: pointer;
    transition: all 0.2s;
    text-align: center;
}

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

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

.btn-outline {
    background: transparent;
    color: white;
    border: 2px solid white;
}

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

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

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

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

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

/* 表单样式 */
.form-group {
    margin-bottom: 1.5rem;
}

.form-label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    color: var(--text-primary);
}

.form-input,
.form-textarea,
.form-select {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid var(--border-color);
    border-radius: 0.5rem;
    font-size: 1rem;
    transition: border-color 0.2s;
}

.form-input:focus,
.form-textarea:focus,
.form-select:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.form-textarea {
    resize: vertical;
    min-height: 120px;
}

/* 卡片样式 */
.card {
    background: var(--surface-color);
    border-radius: 1rem;
    box-shadow: var(--shadow);
    border: 1px solid var(--border-color);
    overflow: hidden;
}

.card-header {
    padding: 1.5rem;
    border-bottom: 1px solid var(--border-color);
    background: rgba(37, 99, 235, 0.05);
}

.card-body {
    padding: 1.5rem;
}

.card-footer {
    padding: 1rem 1.5rem;
    border-top: 1px solid var(--border-color);
    background: rgba(0, 0, 0, 0.02);
}

/* 页脚 */
.footer {
    background: var(--text-primary);
    color: white;
    padding: 3rem 0 1rem;
    margin-top: 4rem;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
}

.footer-section h3,
.footer-section h4 {
    margin-bottom: 1rem;
}

.footer-section ul {
    list-style: none;
}

.footer-section ul li {
    margin-bottom: 0.5rem;
}

.footer-section a {
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
    transition: color 0.2s;
}

.footer-section a:hover {
    color: white;
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    color: rgba(255, 255, 255, 0.6);
}

/* 工具样式 */
.hidden {
    display: none !important;
}

.loading {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    color: white;
}

.loading-spinner {
    width: 40px;
    height: 40px;
    border: 4px solid rgba(255, 255, 255, 0.3);
    border-top: 4px solid white;
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin-bottom: 1rem;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

.notification {
    position: fixed;
    top: 80px;
    right: 1rem;
    z-index: 1001;
    max-width: 400px;
}

.notification-content {
    background: var(--surface-color);
    border: 1px solid var(--border-color);
    border-radius: 0.5rem;
    box-shadow: var(--shadow-lg);
    padding: 1rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.notification.success .notification-content {
    border-left: 4px solid var(--success-color);
}

.notification.error .notification-content {
    border-left: 4px solid var(--error-color);
}

.notification.warning .notification-content {
    border-left: 4px solid var(--warning-color);
}

.notification-close {
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--text-secondary);
    margin-left: 1rem;
}

/* 工具页面样式 */
.tool-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(500px, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
}

.button-group {
    display: flex;
    gap: 0.5rem;
    margin: 1rem 0;
    flex-wrap: wrap;
}

.result-area {
    margin-top: 1rem;
    padding: 1rem;
    border: 1px solid var(--border-color);
    border-radius: 0.5rem;
    background: var(--background-color);
    min-height: 100px;
}

.result-success {
    border-color: var(--success-color);
    background: rgba(16, 185, 129, 0.1);
    color: var(--success-color);
}

.result-error {
    border-color: var(--error-color);
    background: rgba(239, 68, 68, 0.1);
    color: var(--error-color);
}

.result-info {
    border-color: var(--primary-color);
    background: rgba(37, 99, 235, 0.1);
    color: var(--primary-color);
}

.info-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
    margin-top: 1rem;
}

.info-item {
    background: var(--surface-color);
    padding: 1rem;
    border-radius: 0.5rem;
    border: 1px solid var(--border-color);
    text-align: center;
}

.info-item .value {
    font-size: 1.5rem;
    font-weight: bold;
    color: var(--primary-color);
    display: block;
}

.info-item .label {
    font-size: 0.875rem;
    color: var(--text-secondary);
    margin-top: 0.25rem;
}

.file-drop-zone {
    border: 2px dashed var(--border-color);
    border-radius: 0.5rem;
    padding: 2rem;
    text-align: center;
    color: var(--text-secondary);
    transition: all 0.2s;
    cursor: pointer;
}

.file-drop-zone:hover,
.file-drop-zone.drag-over {
    border-color: var(--primary-color);
    background: rgba(37, 99, 235, 0.05);
    color: var(--primary-color);
}

.file-drop-zone i {
    font-size: 2rem;
    margin-bottom: 1rem;
    display: block;
}

.status-indicator {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.25rem 0.75rem;
    border-radius: 1rem;
    font-size: 0.875rem;
    font-weight: 500;
}

.status-valid {
    background: rgba(16, 185, 129, 0.1);
    color: var(--success-color);
}

.status-invalid {
    background: rgba(239, 68, 68, 0.1);
    color: var(--error-color);
}

.status-warning {
    background: rgba(245, 158, 11, 0.1);
    color: var(--warning-color);
}

.code-block {
    background: #f8f9fa;
    border: 1px solid var(--border-color);
    border-radius: 0.5rem;
    padding: 1rem;
    font-family: 'Monaco', 'Menlo', 'Ubuntu Mono', monospace;
    font-size: 0.875rem;
    overflow-x: auto;
    white-space: pre;
}

.tabs {
    display: flex;
    border-bottom: 1px solid var(--border-color);
    margin-bottom: 1rem;
}

.tab {
    padding: 0.75rem 1.5rem;
    border: none;
    background: none;
    cursor: pointer;
    border-bottom: 2px solid transparent;
    transition: all 0.2s;
}

.tab:hover {
    background: rgba(37, 99, 235, 0.05);
}

.tab.active {
    border-bottom-color: var(--primary-color);
    color: var(--primary-color);
}

.tab-content {
    display: none;
}

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

/* 响应式设计 */
@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        left: -100%;
        top: 64px;
        flex-direction: column;
        background-color: var(--surface-color);
        width: 100%;
        text-align: center;
        transition: 0.3s;
        box-shadow: var(--shadow);
        padding: 2rem 0;
    }

    .nav-menu.active {
        left: 0;
    }

    .nav-toggle {
        display: flex;
    }

    .hero-content h1 {
        font-size: 2rem;
    }

    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }

    .features-grid {
        grid-template-columns: 1fr;
    }

    .page-header h1 {
        font-size: 2rem;
    }

    .tool-grid {
        grid-template-columns: 1fr;
    }

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

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

    .json-tool-container {
        flex-direction: column;
    }

    .tool-panels {
        flex-direction: column;
    }

    .input-panel,
    .output-panel {
        min-height: 300px;
    }

    .tool-actions {
        flex-wrap: wrap;
        gap: 0.5rem;
    }

    .tool-actions .btn {
        flex: 1;
        min-width: 120px;
    }
}

/* JSON工具专用样式 */
.json-tool-container {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    max-width: 100%;
}

.tool-actions {
    display: flex;
    gap: 1rem;
    padding: 1rem;
    background: var(--surface-color);
    border-radius: 0.5rem;
    box-shadow: var(--shadow);
    flex-wrap: wrap;
    justify-content: center;
}

.tool-panels {
    display: flex;
    gap: 1.5rem;
    min-height: 500px;
}

.input-panel,
.output-panel {
    flex: 1;
    display: flex;
    flex-direction: column;
    background: var(--surface-color);
    border-radius: 0.5rem;
    box-shadow: var(--shadow);
    overflow: hidden;
}

.panel-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem;
    background: rgba(37, 99, 235, 0.05);
    border-bottom: 1px solid var(--border-color);
}

.panel-header h3 {
    margin: 0;
    font-size: 1.1rem;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.panel-info {
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.panel-body {
    flex: 1;
    display: flex;
    flex-direction: column;
}

.json-textarea {
    flex: 1;
    border: none;
    padding: 1rem;
    font-family: 'Monaco', 'Menlo', 'Ubuntu Mono', monospace;
    font-size: 0.875rem;
    line-height: 1.5;
    resize: none;
    outline: none;
    background: transparent;
    color: var(--text-primary);
    min-height: 400px;
}

.json-textarea::placeholder {
    color: var(--text-secondary);
    opacity: 0.7;
}

.json-textarea:focus {
    background: rgba(37, 99, 235, 0.02);
}

.tool-status {
    padding: 1rem;
    background: var(--surface-color);
    border-radius: 0.5rem;
    box-shadow: var(--shadow);
    min-height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
}

.tool-status.success {
    background: rgba(16, 185, 129, 0.1);
    color: var(--success-color);
    border: 1px solid rgba(16, 185, 129, 0.2);
}

.tool-status.error {
    background: rgba(239, 68, 68, 0.1);
    color: var(--error-color);
    border: 1px solid rgba(239, 68, 68, 0.2);
}

.tool-status.warning {
    background: rgba(245, 158, 11, 0.1);
    color: var(--warning-color);
    border: 1px solid rgba(245, 158, 11, 0.2);
}

/* BeJSON风格的JSON工具样式 */
:root {
    --bg-color: #f8fafc;
    --card-bg: #ffffff;
    --header-bg: #f1f5f9;
    --input-bg: #ffffff;
    --input-focus-bg: #fefefe;
    --hover-bg: #f8fafc;
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
}

.json-toolbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 20px;
    background: var(--card-bg);
    border-bottom: 1px solid var(--border-color);
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
    position: sticky;
    top: 64px;
    z-index: 100;
}

.toolbar-left, .toolbar-right {
    display: flex;
    align-items: center;
    gap: 8px;
}

.toolbar-group {
    display: flex;
    align-items: center;
    gap: 4px;
}

.toolbar-separator {
    width: 1px;
    height: 24px;
    background: var(--border-color);
    margin: 0 8px;
}

.toolbar-btn {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 8px 12px;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    background: var(--input-bg);
    color: var(--text-primary);
    font-size: 13px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
    white-space: nowrap;
}

.toolbar-btn:hover {
    background: var(--hover-bg);
    border-color: var(--primary-color);
    transform: translateY(-1px);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

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

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

.toolbar-btn.outline {
    background: transparent;
    border-color: var(--border-color);
}

.toolbar-btn.outline:hover {
    background: var(--hover-bg);
}

.toolbar-btn i {
    font-size: 14px;
}



.json-editor-container {
    display: flex;
    height: calc(100vh - 200px);
    min-height: 500px;
    background: var(--bg-color);
}

.editor-panel {
    flex: 1;
    display: flex;
    flex-direction: column;
    background: var(--card-bg);
    border: 1px solid var(--border-color);
}

.input-panel {
    border-right: none;
}

.output-panel {
    border-left: none;
}

.editor-divider {
    width: 6px;
    background: var(--border-color);
    cursor: col-resize;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    transition: background-color 0.2s ease;
}

.editor-divider:hover {
    background: var(--primary-color);
}

.divider-handle {
    color: var(--text-secondary);
    font-size: 12px;
    opacity: 0.6;
    transition: opacity 0.2s ease;
}

.editor-divider:hover .divider-handle {
    opacity: 1;
    color: white;
}

.editor-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 16px;
    background: var(--header-bg);
    border-bottom: 1px solid var(--border-color);
    min-height: 48px;
}

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

.editor-controls {
    display: flex;
    align-items: center;
    gap: 12px;
}

/* 换行控件样式 */
.wrap-control {
    display: flex;
    align-items: center;
    gap: 6px;
}

.wrap-checkbox {
    width: 14px;
    height: 14px;
    cursor: pointer;
}

.wrap-label {
    font-size: 12px;
    color: var(--text-secondary);
    cursor: pointer;
    user-select: none;
}

/* 自动换行样式 */
.code-editor.wrap-enabled {
    white-space: pre-wrap;
    word-wrap: break-word;
}

.format-select {
    padding: 4px 8px;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    background: var(--input-bg);
    color: var(--text-primary);
    font-size: 12px;
    min-width: 80px;
}

.editor-info {
    font-size: 11px;
    color: var(--text-secondary);
    font-family: 'Fira Code', monospace;
}

.editor-body {
    flex: 1;
    display: flex;
    position: relative;
    overflow: hidden;
}

.line-numbers {
    width: 50px;
    background: var(--header-bg);
    border-right: 1px solid var(--border-color);
    padding: 16px 8px;
    font-family: 'Fira Code', 'Monaco', 'Consolas', monospace;
    font-size: 13px;
    line-height: 1.6;
    color: var(--text-secondary);
    text-align: right;
    user-select: none;
    overflow: hidden;
    white-space: pre;
}

.code-editor {
    flex: 1;
    border: none;
    outline: none;
    resize: none;
    padding: 16px;
    background: var(--input-bg);
    color: var(--text-primary);
    font-family: 'Fira Code', 'Monaco', 'Consolas', monospace;
    font-size: 13px;
    line-height: 1.6;
    tab-size: 2;
    overflow-y: auto;
    white-space: pre;
}

.code-editor::placeholder {
    color: var(--text-secondary);
    opacity: 0.6;
}

.code-editor:focus {
    background: var(--input-focus-bg);
}

.status-bar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 8px 20px;
    background: var(--header-bg);
    border-top: 1px solid var(--border-color);
    font-size: 12px;
    color: var(--text-secondary);
    min-height: 36px;
}

.status-left, .status-right {
    display: flex;
    align-items: center;
    gap: 16px;
}

.status-message {
    font-weight: 500;
}

.status-message.success {
    color: #059669;
}

.status-message.error {
    color: #dc2626;
}

.status-message.warning {
    color: #d97706;
}

.status-item {
    display: flex;
    align-items: center;
    gap: 4px;
    font-family: 'Fira Code', monospace;
}

.status-item i {
    font-size: 11px;
}