/* 自定义样式 */
:root {
    --sidebar-width: 260px;
    --primary-bg: #343541;
    --secondary-bg: #202123;
    --message-user-bg: #2d6a4f;
    --message-assistant-bg: #444654;
    --border-color: #4a4b57;
}

body {
    background-color: var(--primary-bg);
    color: #ececf1;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
    overflow: hidden;
}

.sidebar {
    background-color: var(--secondary-bg);
    display: flex;
    flex-direction: column;
    height: 100vh;
    position: fixed;
    left: 0;
    top: 0;
    width: var(--sidebar-width);
    z-index: 1000;
}

.chat-history {
    flex: 1;
    overflow-y: auto;
}

.chat-item:hover {
    background-color: rgba(255, 255, 255, 0.1) !important;
}

.hover-bg:hover {
    background-color: rgba(255, 255, 255, 0.05);
}

.message-area {
    background-color: var(--primary-bg);
    margin-left: var(--sidebar-width);
    height: calc(100vh - 120px);
}

.input-area {
    background-color: var(--primary-bg);
    margin-left: var(--sidebar-width);
}

.top-bar {
    background-color: var(--primary-bg);
    margin-left: var(--sidebar-width);
}

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

::-webkit-scrollbar-track {
    background: transparent;
}

::-webkit-scrollbar-thumb {
    background: #555;
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: #666;
}

/* 消息样式 */
.message-content {
    word-wrap: break-word;
    white-space: pre-wrap;
}

.message-content pre {
    background-color: #1a1a1a;
    padding: 1rem;
    border-radius: 0.375rem;
    overflow-x: auto;
    margin: 0.5rem 0;
}

.message-content code {
    background-color: rgba(0, 0, 0, 0.3);
    padding: 0.2rem 0.4rem;
    border-radius: 0.25rem;
    font-family: 'Courier New', Courier, monospace;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .sidebar {
        display: none;
    }

    .message-area,
    .input-area,
    .top-bar {
        margin-left: 0;
    }

    .message-content {
        max-width: 90% !important;
    }
}

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

.message-wrapper {
    animation: fadeIn 0.3s ease-out;
}

/* 输入框样式 */
#messageInput:focus {
    box-shadow: 0 0 0 0.25rem rgba(25, 135, 84, 0.25);
    border-color: #198754;
}

/* 卡片悬停效果 */
.card {
    transition: transform 0.2s, box-shadow 0.2s;
    cursor: pointer;
}

.card:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
    border-color: #666;
}

/* 顶部导航 */
nav {
    background-color: #fff !important;
    box-shadow: 0 1px 5px rgba(0,0,0,0.1) !important;
    border-bottom: 1px solid #dee2e6 !important;
}

/* 搜索框输入框 */
.input-group .form-control {
    background-color: #fff;
    border: 1px solid #dee2e6;
    border-radius: 50px;
    padding: 10px 15px;
    font-size: 16px;
    color: #222;
}

/* 输入框聚焦状态 */
.input-group .form-control:focus {
    box-shadow: 0 0 0 0.25rem rgba(13, 110, 253, 0.25);
    border-color: #0d6efd;
}

/* 输入框左侧+号图标 */
.input-group-text:first-child {
    background-color: #f8f9fa;
    border-right: none;
    color: #6c757d;
}

/* 输入框右侧麦克风图标 */
.input-group-text:last-child {
    background-color: #f8f9fa;
    border-left: none;
    color: #6c757d;
}

.input-group-text {
    background-color: #f8f9fa;
    border: none;
}

/* 快捷图标 */
.btn-light {
    background-color: #f8f9fa;
    border: none;
}