:root {
    /* 浅色主题 */
    --bg-primary: #ffffff;
    --bg-secondary: #f7f9fc;
    --bg-tertiary: #edf1f7;
    --text-primary: #333333;
    --text-secondary: #666666;
    --text-muted: #999999;
    --border-color: #e0e0e0;
    --accent-color: rgb(59, 67, 83);
    --accent-hover: rgb(45, 52, 65);
    --success-color: #4CAF50;
    --warning-color: #FFC107;
    --danger-color: #f44336;
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.08);
    --shadow-md: 0 4px 8px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 20px rgba(0, 0, 0, 0.15);
    --gradient-primary: none;
    --gradient-accent: none;
}

[data-theme="dark"] {
    /* 深色主题 */
    --bg-primary: #1a1a1a;
    --bg-secondary: #252525;
    --bg-tertiary: #333333;
    --text-primary: #e0e0e0;
    --text-secondary: #b0b0b0;
    --text-muted: #808080;
    --border-color: #555555;
    --accent-color: rgb(75, 85, 99);
    --accent-hover: rgb(59, 67, 83);
    --success-color: #66BB6A;
    --warning-color: #FFD54F;
    --danger-color: #EF5350;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    transition: background-color 0.3s ease, color 0.3s ease;
}

.container {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* Header */
.header {
    background: var(--bg-secondary);
    padding: 1rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    box-shadow: var(--shadow-sm);
    position: sticky;
    top: 0;
    z-index: 100;
    border-bottom: 1px solid var(--border-color);
}

.header h1 {
    color: var(--text-primary);
    font-size: 1.75rem;
    font-weight: 700;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.header-controls {
    display: flex;
    gap: 0.75rem;
}

.theme-toggle, .language-toggle {
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    padding: 0.5rem;
    border-radius: 0.5rem;
    cursor: pointer;
    transition: all 0.3s ease;
    backdrop-filter: none;
}

.theme-toggle:hover, .language-toggle:hover {
    background: var(--accent-hover);
    color: white;
    transform: translateY(-1px);
}

.language-toggle {
    min-width: 2.5rem;
    text-align: center;
    font-weight: 600;
}

/* Main Content */
.main-content {
    flex: 1;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
    padding: 2rem;
    max-width: 1400px;
    margin: 0 auto;
    width: 100%;
    align-items: start;
}

/* Settings Panel */
.settings-panel {
    background: var(--bg-secondary);
    border-radius: 0.5rem;
    box-shadow: var(--shadow-md);
    overflow: hidden;
    border: 1px solid var(--border-color);
}

.form-section {
    border-bottom: 1px solid var(--border-color);
}

.form-section:last-child {
    border-bottom: none;
}

.section-header, .panel-header {
    background: var(--bg-tertiary);
    padding: 1rem 1.5rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    cursor: pointer;
    border-bottom: 1px solid var(--border-color);
}

.section-controls, .panel-controls-group {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.collapse-btn {
    background: none;
    border: none;
    color: var(--text-secondary);
    font-size: 1rem;
    padding: 0.5rem;
    line-height: 1;
    cursor: pointer;
}

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

.collapse-btn i {
    transition: transform 0.3s ease-out;
}

.collapse-btn i.rotated {
    transform: rotate(180deg);
}

.section-title, .panel-header h3 {
    color: var(--text-primary);
    font-size: 1.125rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.form-content {
    padding: 1.5rem;
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
    transition: all 0.3s ease;
}

.form-content.collapsed {
    max-height: 0;
    padding: 0 1.5rem;
    overflow: hidden;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.form-group label {
    font-weight: 500;
    color: var(--text-primary);
    font-size: 0.9rem;
}

.input-group {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    flex-wrap: wrap;
}

.input-group input, .input-group select {
    flex: 1;
    min-width: 120px;
}

input, select, textarea {
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    padding: 0.75rem;
    border-radius: 0.5rem;
    font-size: 0.9rem;
    transition: all 0.3s ease;
}

input:focus, select:focus, textarea:focus {
    outline: none;
    border-color: var(--accent-color);
    box-shadow: 0 0 0 2px rgba(74, 144, 226, 0.2);
}

input:hover, select:hover {
    border-color: var(--accent-hover);
}

/* Toggle Switches */
.toggle-switch {
    position: relative;
    display: inline-block;
    width: 50px;
    height: 28px;
}

.toggle-switch.mini {
    width: 36px;
    height: 20px;
}

.toggle-switch input {
    opacity: 0;
    width: 0;
    height: 0;
}

.slider {
    position: absolute;
    cursor: pointer;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: var(--border-color);
    transition: 0.4s;
    border-radius: 28px;
}

.slider.mini {
    border-radius: 20px;
}

.slider:before {
    position: absolute;
    content: "";
    height: 20px;
    width: 20px;
    left: 4px;
    bottom: 4px;
    background-color: white;
    transition: 0.4s;
    border-radius: 50%;
    box-shadow: var(--shadow-sm);
}

.mini .slider:before {
    height: 14px;
    width: 14px;
    left: 3px;
    bottom: 3px;
}

input:checked + .slider {
    background-color: var(--accent-color);
}

input:checked + .slider:before {
    transform: translateX(22px);
}

input:checked + .mini.slider:before {
    transform: translateX(16px);
}

.toggle-label {
    font-size: 0.8rem;
    color: var(--text-secondary);
    white-space: nowrap;
}

/* Amount Controls */
.amount-controls {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

#amountInputs {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
}

#amountInputs input, #amountInputs select {
    flex: 1;
    min-width: 80px;
}

/* Traffic Controls */
.traffic-controls {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    flex-wrap: wrap;
}

.traffic-controls .input-group {
    flex: 0 0 auto;
}

.traffic-controls .toggle-switch {
    flex-shrink: 0;
}

.traffic-controls .toggle-label {
    flex-shrink: 0;
}

/* Auto Calculate Button */
.auto-calc-btn {
    background: var(--accent-color);
    color: white;
    border: none;
    padding: 0.75rem 1rem;
    border-radius: 0.5rem;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.9rem;
    white-space: nowrap;
}

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

.auto-calc-btn.active {
    background: var(--success-color);
}

.auto-calc-btn.active:hover {
    background: var(--success-color);
    opacity: 0.9;
}

/* Tags */
.tags-container {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

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

.tag {
    background: var(--accent-color);
    color: white;
    padding: 0.5rem 0.75rem;
    border-radius: 1.5rem;
    font-size: 0.8rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    animation: slideInUp 0.3s ease;
}

.tag button {
    background: rgba(255, 255, 255, 0.2);
    border: none;
    color: white;
    cursor: pointer;
    padding: 0;
    width: 16px;
    height: 16px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background 0.2s ease;
}

.tag button:hover {
    background: rgba(255, 255, 255, 0.4);
}

.tag-input {
    display: flex;
    gap: 0.5rem;
}

.tag-input input {
    flex: 1;
}

.tag-input button {
    background: var(--accent-color);
    color: white;
    border: none;
    padding: 0.75rem;
    border-radius: 0.5rem;
    cursor: pointer;
    transition: all 0.3s ease;
}

.tag-input button:hover {
    background: var(--accent-hover);
    transform: translateY(-1px);
}

/* Code Panel */
.code-panel {
    background: var(--bg-secondary);
    border-radius: 0.5rem;
    box-shadow: var(--shadow-md);
    overflow: hidden;
    border: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
}

.panel-header {
    background: var(--bg-tertiary);
    padding: 1rem 1.5rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.panel-header h3 {
    color: var(--text-primary);
    font-size: 1.125rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.panel-controls {
    display: flex;
    gap: 0.75rem;
}

.refresh-btn, .copy-btn {
    background: var(--accent-color);
    color: white;
    border: none;
    padding: 0.5rem 1rem;
    border-radius: 0.5rem;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.9rem;
    backdrop-filter: none;
}

.refresh-btn:hover, .copy-btn:hover {
    background: var(--accent-hover);
    transform: translateY(-1px);
}

.code-container {
    flex: 1;
    position: relative;
    transition: all 0.4s ease-out;
}

.code-container.collapsed {
    max-height: 0;
    overflow: hidden;
    padding-top: 0;
    padding-bottom: 0;
    border-top: none;
}

#jsonCode {
    width: 100%;
    height: 500px;
    background: var(--bg-primary);
    border: none;
    padding: 1.5rem;
    font-family: 'Fira Code', 'Monaco', 'Menlo', monospace;
    font-size: 0.9rem;
    line-height: 1.6;
    resize: vertical;
    min-height: 300px;
}

/* Modal */
.modal {
    display: none;
    position: fixed;
    z-index: 1000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(5px);
    animation: fadeIn 0.3s ease;
}

.modal-content {
    background-color: var(--bg-primary);
    margin: 15% auto;
    border-radius: 1rem;
    width: 90%;
    max-width: 500px;
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--border-color);
    animation: slideInDown 0.3s ease;
}

.modal-header {
    background: var(--bg-tertiary);
    padding: 1rem 1.5rem;
    border-radius: 1rem 1rem 0 0;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.modal-header h4 {
    color: var(--text-primary);
    font-size: 1.125rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.close {
    color: var(--text-secondary);
    font-size: 1.5rem;
    font-weight: bold;
    cursor: pointer;
    background: none;
    border: none;
    padding: 0;
    line-height: 1;
}

.close:hover {
    color: var(--text-primary);
    opacity: 1;
}

.modal-body {
    padding: 1.5rem;
}

.modal-footer {
    padding: 1rem 1.5rem;
    border-top: 1px solid var(--border-color);
    display: flex;
    justify-content: flex-end;
}

.modal-footer button {
    background: var(--accent-color);
    color: white;
    border: none;
    padding: 0.75rem 1.5rem;
    border-radius: 0.5rem;
    cursor: pointer;
    transition: all 0.3s ease;
}

.modal-footer button:hover {
    background: var(--accent-hover);
}

/* Toast */
.toast {
    position: fixed;
    top: 2rem;
    right: 2rem;
    background: var(--success-color);
    color: white;
    padding: 1rem 1.5rem;
    border-radius: 0.5rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    box-shadow: var(--shadow-lg);
    z-index: 1001;
    opacity: 0;
    transform: translateY(20px);
    visibility: hidden;
    transition: opacity 0.3s ease, transform 0.3s ease, visibility 0s 0.3s;
}

.toast.show {
    opacity: 1;
    transform: translateY(0);
    visibility: visible;
    transition: opacity 0.3s ease, transform 0.3s ease, visibility 0s 0s;
}

/* Animations */
@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes slideInDown {
    from {
        transform: translateY(-50px);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

@keyframes slideInUp {
    from {
        transform: translateY(20px);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

.fa-sync-alt.spinning {
    animation: spin 1s linear infinite;
}

/* Responsive Design */
@media (max-width: 1024px) {
    .main-content {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
    
    .header {
        padding: 1rem;
    }
    
    .header h1 {
        font-size: 1.5rem;
    }
}

@media (max-width: 768px) {
    .main-content {
        padding: 1rem;
        gap: 1rem;
    }
    
    .form-content {
        padding: 1rem;
    }
    
    .input-group {
        flex-direction: column;
        align-items: stretch;
    }
    
    .input-group input, .input-group select {
        min-width: auto;
    }
    
    .traffic-controls {
        flex-direction: column;
        align-items: stretch;
    }
    
    #amountInputs {
        flex-direction: column;
    }
    
    .panel-controls {
        flex-direction: column;
        gap: 0.5rem;
    }
    
    .refresh-btn, .copy-btn {
        justify-content: center;
    }
    
    .toast {
        top: 1rem;
        right: 1rem;
        left: 1rem;
    }
    
    .modal-content {
        margin: 10% auto;
        width: 95%;
    }
}

@media (max-width: 480px) {
    .header {
        flex-direction: column;
        gap: 1rem;
        text-align: center;
    }
    
    .header-controls {
        justify-content: center;
    }
    
    .section-header {
        flex-direction: column;
        gap: 0.75rem;
        text-align: center;
    }
    
    #jsonCode {
        height: 300px;
        font-size: 0.8rem;
    }
}

/* Hidden state for disabled sections */
.form-content.hidden {
    display: none;
}

/* Focus styles for accessibility */
button:focus, input:focus, select:focus, textarea:focus {
    outline: 2px solid var(--accent-color);
    outline-offset: 2px;
}

/* Hover effects */
.form-section:hover, .code-panel:hover {
    box-shadow: var(--shadow-lg);
    border-color: var(--accent-color);
}

/* Scrollbar styling */
textarea::-webkit-scrollbar { width: 6px; }
textarea::-webkit-scrollbar-track { background: var(--bg-tertiary); border-radius: 3px; }
textarea::-webkit-scrollbar-thumb { background: var(--border-color); border-radius: 3px; }
textarea::-webkit-scrollbar-thumb:hover { background: var(--text-muted); }

/* AI Button */
.ai-btn {
    background-color: var(--accent-color);
    color: white;
    border: none;
    padding: 0.5rem 1rem;
    border-radius: 0.5rem;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

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

.ai-btn.ai-mode-on {
    background-color: var(--danger-color);
}

.ai-btn.ai-mode-on:hover {
    background-color: #d32f2f;
}

/* AI Chat Container */
/* #aiChatContainer { ... } */

.chat-box {
    flex-grow: 1;
    height: 400px;
    overflow-y: auto;
    padding: 1rem;
    background-color: var(--bg-tertiary);
    border-radius: 0.5rem;
    border: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

/* Chat Bubbles */
.chat-bubble {
    display: flex;
    gap: 0.75rem;
    max-width: 85%;
    align-items: flex-start;
}

.chat-bubble .avatar {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background-color: var(--accent-color);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    flex-shrink: 0;
}

.chat-bubble .message-content {
    background-color: var(--bg-primary);
    padding: 0.75rem 1rem;
    border-radius: 0.75rem;
    box-shadow: var(--shadow-sm);
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.message-content p {
    margin: 0;
    line-height: 1.5;
    white-space: pre-wrap;
    word-wrap: break-word;
}

.timer {
    font-size: 0.75rem;
    color: var(--text-muted);
    align-self: flex-end;
}

/* User Bubble */
.user-bubble {
    align-self: flex-end;
    flex-direction: row-reverse;
}

.user-bubble .avatar {
    background-color: var(--success-color);
}

.user-bubble .message-content {
    background-color: #e1f5fe;
}

[data-theme="dark"] .user-bubble .message-content {
    background-color: #01579b;
}

/* AI Bubble */
.ai-bubble {
    align-self: flex-start;
}

.ai-bubble .avatar {
    background-color: var(--accent-color);
}

.ai-bubble .message-content {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
}

.thinking-indicator {
    font-style: italic;
    color: var(--text-muted);
}

/* Chat Input Area */
.chat-input-area {
    display: flex;
    gap: 0.75rem;
    align-items: flex-end;
}

#chatInput {
    flex-grow: 1;
    border-radius: 0.5rem;
    resize: vertical;
    min-height: 50px;
    max-height: 200px;
    font-size: 1rem;
    padding: 0.75rem;
}

.chat-buttons {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

#sendMessageBtn, #clearContextBtn {
    background-color: var(--accent-color);
    color: white;
    border: none;
    width: 48px;
    height: 48px;
    border-radius: 0.5rem;
    cursor: pointer;
    transition: all 0.3s ease;
    font-size: 1.2rem;
}

#clearContextBtn {
    background-color: var(--warning-color);
}

#sendMessageBtn:hover {
    background-color: var(--accent-hover);
}

#clearContextBtn:hover {
    background-color: #f57c00;
}

/* Scrollbar for chatbox */
.chat-box::-webkit-scrollbar {
    width: 8px;
}
.chat-box::-webkit-scrollbar-track {
    background: var(--bg-tertiary);
    border-radius: 4px;
}
.chat-box::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 4px;
}
.chat-box::-webkit-scrollbar-thumb:hover {
    background: var(--text-muted);
}

/* New AI Chat View Styles */
#ai-chat-view {
    padding: 2rem;
    justify-content: center;
    align-items: flex-start;
    width: 100%;
}

.ai-chat-panel {
    width: 100%;
    max-width: 1000px;
    height: calc(100vh - 120px);
    display: flex;
    flex-direction: column;
    background: var(--bg-secondary);
    border-radius: 0.5rem;
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--border-color);
    overflow: hidden;
}

.ai-chat-header {
    background: var(--bg-tertiary);
    padding: 1rem 1.5rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid var(--border-color);
}

.ai-chat-header h3 {
    color: var(--text-primary);
    font-size: 1.125rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin: 0;
}

.window-controls {
    display: flex;
    gap: 0.25rem;
}

.window-btn {
    background: none;
    border: none;
    color: var(--text-secondary);
    font-size: 0.9rem;
    padding: 0.4rem;
    line-height: 1;
    cursor: pointer;
    border-radius: 0.25rem;
    transition: all 0.3s ease;
    width: 28px;
    height: 28px;
    display: flex;
    align-items: center;
    justify-content: center;
}



.close-btn:hover {
    background: var(--danger-color);
    color: white;
}

.mobile-controls {
    display: none;
}

.mobile-close-btn {
    background: none;
    border: none;
    color: var(--text-secondary);
    font-size: 1.1rem;
    padding: 0.5rem;
    line-height: 1;
    cursor: pointer;
    border-radius: 0.25rem;
    transition: all 0.3s ease;
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.mobile-close-btn:hover {
    background: var(--danger-color);
    color: white;
}

.ai-chat-header {
    cursor: move;
    user-select: none;
}

#ai-chat-view .chat-box {
    height: auto;
    background-color: var(--bg-primary);
}

#ai-chat-view .chat-input-area {
    padding: 1rem;
    border-top: 1px solid var(--border-color);
    background-color: var(--bg-tertiary);
}

#ai-chat-view #chatInput {
    background-color: var(--bg-primary);
}

/* 响应式设计 - 桌面端显示为可拖拽窗口，移动端全屏 */
@media (min-width: 769px) {
    .ai-chat-panel {
        position: fixed;
        top: 50%;
        left: 50%;
        transform: translate(-50%, -50%);
        z-index: 1000;
        width: 800px;
        height: 600px;
        min-width: 400px;
        min-height: 300px;
        max-width: none;
        max-height: none;
        border-radius: 0.75rem;
        box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
        resize: both;
        overflow: hidden;
    }
    

    

}

@media (max-width: 768px) {
    .ai-chat-panel {
        position: fixed !important;
        top: 0 !important;
        left: 0 !important;
        transform: none !important;
        width: 100vw !important;
        height: 100vh !important;
        max-width: none !important;
        border-radius: 0 !important;
        border: none !important;
        z-index: 1000;
        resize: none !important;
    }
    
    .window-controls {
        display: none;
    }
    
    .mobile-controls {
        display: block;
    }
    
    .ai-chat-header {
        cursor: default;
    }
    
    #ai-chat-view .chat-input-area {
        padding: 1rem;
        border-top: 1px solid var(--border-color);
    }
}

/* AI 代码块样式 */
.ai-code-block {
    margin: 0.5rem 0;
    border-radius: 0.5rem;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    position: relative;
    overflow: hidden;
}

.code-content {
    margin: 0;
    padding: 2rem 1rem 1rem;
    background: var(--bg-primary);
    color: var(--text-primary);
    font-family: 'Consolas', 'Monaco', 'Courier New', monospace;
    font-size: 0.9rem;
    line-height: 1.4;
    overflow-x: auto;
    white-space: pre-wrap;
    word-wrap: break-word;
    border-radius: 0.5rem;
}

.code-content code {
    background: none;
    padding: 0;
    border-radius: 0;
    color: inherit;
    font-size: inherit;
}

/* 语言标签（左上角） */
.code-content::before {
    content: attr(data-language);
    position: absolute;
    top: 0.5rem;
    left: 1rem;
    font-size: 0.7rem;
    color: var(--text-muted);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    font-family: var(--font-family);
    background: var(--bg-secondary);
    padding: 0.2rem 0.5rem;
    border-radius: 0.25rem;
    border: 1px solid var(--border-color);
}

/* 复制按钮（右上角） */
.code-content::after {
    content: '📋';
    position: absolute;
    top: 0.5rem;
    right: 0.8rem;
    font-size: 0.8rem;
    cursor: pointer;
    padding: 0.25rem;
    border-radius: 0.25rem;
    opacity: 1;
    transition: all 0.2s;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
}

.ai-code-block:hover .code-content::after {
    background: var(--accent-color);
    color: white;
    border-color: var(--accent-color);
}

/* 未完成的代码块样式 */
.ai-code-block.incomplete {
    border-left: 3px solid var(--accent-color);
}

/* 页脚样式 */
.main-footer {
    background: var(--bg-secondary);
    border-top: 1px solid var(--border-color);
    padding: 2rem 0 1rem;
    margin-top: 3rem;
    color: var(--text-secondary);
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1rem;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
    align-items: start;
}

.footer-section {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.footer-section:last-child {
    text-align: right;
}

.footer-section p {
    margin: 0;
    font-size: 0.9rem;
    line-height: 1.5;
}

.footer-section a {
    color: var(--accent-color);
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-section a:hover {
    color: var(--primary-color);
    text-decoration: underline;
}

.footer-stats {
    display: flex;
    flex-direction: column;
    gap: 0.3rem;
    font-size: 0.85rem;
    color: var(--text-muted);
}

.footer-stats span {
    display: block;
}

.footer-note {
    font-weight: 600;
    color: var(--success-color) !important;
    font-size: 0.9rem !important;
}

/* 响应式页脚 */
@media (max-width: 768px) {
    .footer-content {
        grid-template-columns: 1fr;
        gap: 1.5rem;
        text-align: center;
    }
    
    .footer-section:last-child {
        text-align: center;
    }
    
    .footer-stats {
        align-items: center;
    }
    
    .main-footer {
        padding: 1.5rem 0 1rem;
        margin-top: 2rem;
    }
}