/* css/style.css - 样式文件 */

/* 通用样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: #f5f7fa;
    height: 100vh;
    overflow: hidden;
}

/* 认证页面样式 */
.auth-page {
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
}

.auth-container {
    background: white;
    padding: 2rem;
    border-radius: 10px;
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.1);
    width: 100%;
    max-width: 400px;
}

.auth-container h2 {
    text-align: center;
    margin-bottom: 1.5rem;
    color: #333;
}

.form-group {
    margin-bottom: 1rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    color: #555;
    font-weight: 500;
}

.form-group input, 
.form-group select, 
.form-group textarea {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid #ddd;
    border-radius: 5px;
    font-size: 1rem;
    transition: border-color 0.3s;
}

.form-group input:focus, 
.form-group select:focus, 
.form-group textarea:focus {
    outline: none;
    border-color: #667eea;
    box-shadow: 0 0 0 2px rgba(102, 126, 234, 0.2);
}

.btn {
    width: 100%;
    padding: 0.75rem;
    background: #667eea;
    color: white;
    border: none;
    border-radius: 5px;
    font-size: 1rem;
    cursor: pointer;
    transition: background 0.3s;
}

.btn:hover {
    background: #5a6fd8;
}

.btn-primary {
    background: #28a745;
}

.btn-primary:hover {
    background: #218838;
}

.btn-danger {
    background: #dc3545;
}

.btn-danger:hover {
    background: #c82333;
}

.btn-sm {
    padding: 0.25rem 0.5rem;
    font-size: 0.875rem;
}

a {
    color: #667eea;
    text-decoration: none;
}

a:hover {
    text-decoration: underline;
}

/* 聊天页面样式 */
.chat-container {
    display: flex;
    height: 100vh;
    position: relative;
}

/* 侧边栏样式 */
.sidebar {
    width: 300px;
    background: white;
    box-shadow: 2px 0 10px rgba(0, 0, 0, 0.1);
    display: flex;
    flex-direction: column;
    z-index: 100;
    transition: transform 0.3s ease;
}

.sidebar.hidden {
    transform: translateX(-100%);
}

.sidebar-header {
    padding: 1rem;
    background: #667eea;
    color: white;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.sidebar-header h3 {
    margin: 0;
}

.close-btn {
    background: none;
    border: none;
    color: white;
    font-size: 1.5rem;
    cursor: pointer;
}

.sidebar-content {
    padding: 1rem;
    overflow-y: auto;
    flex: 1;
}

.sidebar-content .form-group {
    margin-bottom: 1.5rem;
}

.sidebar-content .form-control {
    width: 100%;
    padding: 0.5rem;
    border: 1px solid #ddd;
    border-radius: 5px;
}

.sidebar-content .btn {
    width: 100%;
    margin-bottom: 0.5rem;
}

/* 主内容区域样式 */
.main-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    position: relative;
}

/* 聊天头部样式 */
.chat-header {
    padding: 1rem;
    background: white;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    display: flex;
    justify-content: space-between;
    align-items: center;
    z-index: 10;
}

.menu-btn {
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    padding: 0.5rem;
    margin-right: 1rem;
}

.user-info {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.user-info span {
    margin-right: 0.5rem;
}

/* 聊天消息区域样式 */
.chat-messages {
    flex: 1;
    padding: 1rem;
    overflow-y: auto;
    background: #f9f9f9;
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.message {
    max-width: 70%;
    padding: 0.75rem 1rem;
    border-radius: 10px;
    position: relative;
    animation: fadeIn 0.3s ease;
}

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

.message.user {
    align-self: flex-end;
    background: #667eea;
    color: white;
    border-bottom-right-radius: 0;
}

.message.ai {
    align-self: flex-start;
    background: white;
    color: #333;
    border-bottom-left-radius: 0;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
}

.message-info {
    font-size: 0.75rem;
    opacity: 0.7;
    margin-top: 0.25rem;
}

/* 聊天输入区域样式 */
.chat-input-area {
    padding: 1rem;
    background: white;
    border-top: 1px solid #eee;
    display: flex;
    gap: 0.5rem;
}

#message-input {
    flex: 1;
    padding: 0.75rem;
    border: 1px solid #ddd;
    border-radius: 5px;
    resize: none;
    font-family: inherit;
    font-size: 1rem;
    min-height: 50px;
    max-height: 150px;
}

#message-input:focus {
    outline: none;
    border-color: #667eea;
    box-shadow: 0 0 0 2px rgba(102, 126, 234, 0.2);
}

.send-btn {
    padding: 0.75rem 0.5rem;
    background: #667eea;
    color: white;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    transition: background 0.3s;
}

.send-btn:hover {
    background: #5a6fd8;
}

.send-btn:disabled {
    background: #ccc;
    cursor: not-allowed;
}

/* 移动端适配 */
@media (max-width: 768px) {
    .sidebar {
        position: absolute;
        height: 100%;
        z-index: 100;
    }
    
    .chat-header {
        padding: 0.75rem;
    }
    
    .menu-btn {
        margin-right: 0.5rem;
    }
    
    .message {
        max-width: 85%;
    }
    
    .chat-input-area {
        padding: 0.5rem;
    }
    
    #message-input {
        padding: 0.5rem;
    }
    
    .send-btn {
        padding: 0.5rem 1rem;
    }
}

@media (max-width: 480px) {
    .auth-container {
        margin: 1rem;
        padding: 1.5rem;
    }
    
    .sidebar {
        width: 250px;
    }
    
    .message {
        max-width: 90%;
    }
}

/* 加载动画 */
.loading {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 3px solid rgba(255,255,255,.3);
    border-radius: 50%;
    border-top-color: #fff;
    animation: spin 1s ease-in-out infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* 提示消息样式 */
.alert {
    padding: 1rem;
    margin: 1rem 0;
    border-radius: 5px;
    text-align: center;
}

.alert-success {
    background: #d4edda;
    color: #155724;
    border: 1px solid #c3e6cb;
}

.alert-error {
    background: #f8d7da;
    color: #721c24;
    border: 1px solid #f5c6cb;
}