tcpserver/web/style.css

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Microsoft YaHei', sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

.container {
    width: 100%;
    max-width: 1200px;
    position: relative;
}

.panel {
    background: white;
    border-radius: 16px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    overflow: hidden;
}

/* 连接面板样式 */
#connectPanel {
    max-width: 450px;
    margin: 0 auto;
    padding: 40px;
}

.logo {
    text-align: center;
    margin-bottom: 40px;
}

.logo h1 {
    font-size: 32px;
    color: #667eea;
    margin-bottom: 10px;
}

.logo p {
    color: #666;
    font-size: 14px;
}

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

.form-group label {
    display: block;
    margin-bottom: 8px;
    color: #333;
    font-weight: 500;
}

.form-group input {
    width: 100%;
    padding: 12px 16px;
    border: 2px solid #e0e0e0;
    border-radius: 8px;
    font-size: 14px;
    transition: border-color 0.3s;
}

.form-group input:focus {
    outline: none;
    border-color: #667eea;
}

.btn {
    padding: 12px 24px;
    border: none;
    border-radius: 8px;
    font-size: 16px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s;
}

.btn-primary {
    background: #667eea;
    color: white;
    width: 100%;
}

.btn-primary:hover {
    background: #5568d3;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(102, 126, 234, 0.4);
}

.btn-secondary {
    background: #f44336;
    color: white;
}

.btn-secondary:hover {
    background: #d32f2f;
}

.info-box {
    margin-top: 30px;
    padding: 20px;
    background: #f5f5f5;
    border-radius: 8px;
}

.info-box h3 {
    color: #333;
    margin-bottom: 12px;
    font-size: 16px;
}

.info-box ul {
    list-style: none;
    color: #666;
    font-size: 14px;
}

.info-box li {
    padding: 6px 0;
    padding-left: 20px;
    position: relative;
}

.info-box li:before {
    content: "✓";
    position: absolute;
    left: 0;
    color: #667eea;
    font-weight: bold;
}

/* 聊天面板样式 */
#chatPanel {
    height: 80vh;
    display: flex;
    flex-direction: column;
}

.chat-header {
    background: #667eea;
    color: white;
    padding: 20px 30px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.header-left h2 {
    font-size: 24px;
    margin-bottom: 5px;
}

.user-info {
    font-size: 14px;
    opacity: 0.9;
}

.header-right {
    display: flex;
    align-items: center;
    gap: 15px;
}

.online-count {
    background: rgba(255, 255, 255, 0.2);
    padding: 6px 12px;
    border-radius: 20px;
    font-size: 14px;
}

.chat-body {
    display: flex;
    flex: 1;
    overflow: hidden;
}

.sidebar {
    width: 250px;
    background: #f8f9fa;
    border-right: 1px solid #e0e0e0;
    padding: 20px;
    overflow-y: auto;
}

.sidebar h3 {
    color: #333;
    margin-bottom: 15px;
    font-size: 16px;
}

.peer-list {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.peer-item {
    padding: 10px 12px;
    background: white;
    border-radius: 8px;
    border: 1px solid #e0e0e0;
    font-size: 14px;
    color: #333;
}

.peer-item:before {
    content: "👤 ";
}

.main-chat {
    flex: 1;
    display: flex;
    flex-direction: column;
}

.message-area {
    flex: 1;
    padding: 20px;
    overflow-y: auto;
    background: #fafafa;
}

.message {
    margin-bottom: 15px;
    animation: slideIn 0.3s ease;
}

@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.message-system {
    text-align: center;
    color: #999;
    font-size: 13px;
    font-style: italic;
}

.message-user {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
}

.message-user.own {
    align-items: flex-end;
}

.message-header {
    font-size: 12px;
    color: #666;
    margin-bottom: 4px;
}

.message-content {
    max-width: 70%;
    padding: 12px 16px;
    border-radius: 12px;
    word-wrap: break-word;
    font-size: 14px;
    line-height: 1.5;
}

.message-user .message-content {
    background: white;
    color: #333;
    border: 1px solid #e0e0e0;
}

.message-user.own .message-content {
    background: #667eea;
    color: white;
}

.input-area {
    display: flex;
    gap: 10px;
    padding: 20px;
    background: white;
    border-top: 1px solid #e0e0e0;
}

.input-area input {
    flex: 1;
    padding: 12px 16px;
    border: 2px solid #e0e0e0;
    border-radius: 8px;
    font-size: 14px;
}

.input-area input:focus {
    outline: none;
    border-color: #667eea;
}

.input-area .btn {
    width: auto;
    min-width: 100px;
}

/* 状态栏 */
.status-bar {
    position: fixed;
    bottom: 20px;
    right: 20px;
    padding: 12px 20px;
    background: #333;
    color: white;
    border-radius: 8px;
    font-size: 14px;
    opacity: 0;
    transform: translateY(20px);
    transition: all 0.3s;
    pointer-events: none;
}

.status-bar.show {
    opacity: 1;
    transform: translateY(0);
}

.status-bar.success {
    background: #4caf50;
}

.status-bar.error {
    background: #f44336;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .chat-body {
        flex-direction: column;
    }
    
    .sidebar {
        width: 100%;
        max-height: 150px;
        border-right: none;
        border-bottom: 1px solid #e0e0e0;
    }
    
    .message-content {
        max-width: 85%;
    }
}

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

::-webkit-scrollbar-track {
    background: #f1f1f1;
}

::-webkit-scrollbar-thumb {
    background: #888;
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: #555;
}