/* website/style.css */
:root {
    --primary: #4F46E5; /* 主色调：深紫蓝色 */
    --primary-light: #6366F1;
    --primary-dark: #4338CA;
    --bg-light: #F9FAFB;
    --bg-dark: #111827;
    --chat-bg-light: #FFFFFF;
    --chat-bg-dark: #1F2937;
    --messages-bg-light: #F3F4F6;
    --messages-bg-dark: #1F2937;
    --text-light: #111827;
    --text-dark: #F9FAFB;
    --border-light: #E5E7EB;
    --border-dark: #374151;
    --user-bubble: #4F46E5;
    --bot-bubble-light: #E5E7EB;
    --bot-bubble-dark: #374151;
    --shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
    --radius: 16px;
    --small-radius: 8px;
}

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

body {
    font-family: 'Inter', sans-serif;
    background-color: var(--bg-light);
    color: var(--text-light);
    min-height: 100vh;
    padding: 16px;
    transition: background-color 0.3s ease;
}

.chat-container {
    width: 100%;
    max-width: 600px;
    background-color: var(--chat-bg-light);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    display: flex;
    flex-direction: column;
    height: calc(100vh - 32px);
    margin: 0 auto;
    overflow: hidden;
    transition: all 0.3s ease;
}

.messages {
    flex: 1;
    overflow-y: auto;
    padding: 20px;
    background-color: var(--messages-bg-light);
    scrollbar-width: thin;
    scrollbar-color: rgba(0,0,0,0.1) transparent;
    transition: all 0.3s ease;
}

.messages::-webkit-scrollbar {
    width: 6px;
}

.messages::-webkit-scrollbar-thumb {
    background-color: rgba(0,0,0,0.1);
    border-radius: 3px;
}

.message {
    display: flex;
    align-items: flex-start;
    margin-bottom: 20px;
    animation: fadeIn 0.3s ease;
}

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

.message img {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    margin-right: 12px;
    flex-shrink: 0;
    object-fit: cover;
}

.message-content {
    padding: 12px 16px;
    border-radius: var(--small-radius);
    max-width: 80%;
    line-height: 1.6;
    position: relative;
}

.message.user {
    flex-direction: row-reverse;
}

.message.user img {
    margin-left: 12px;
    margin-right: 0;
}

.message.user .message-content {
    background-color: var(--user-bubble);
    color: white;
    border-top-right-radius: 4px;
}

.message.bot .message-content {
    background-color: var(--bot-bubble-light);
    border-top-left-radius: 4px;
}

.input-container {
    display: flex;
    gap: 10px;
    padding: 16px;
    border-top: 1px solid var(--border-light);
    background-color: var(--chat-bg-light);
    transition: all 0.3s ease;
}

.input-container input {
    flex: 1;
    padding: 14px 16px;
    border: 1px solid var(--border-light);
    border-radius: 24px;
    font-size: 15px;
    background-color: var(--messages-bg-light);
    transition: all 0.2s ease;
}

.input-container input:focus {
    outline: none;
    border-color: var(--primary-light);
    box-shadow: 0 0 0 2px rgba(79, 70, 229, 0.1);
}

.input-container button {
    padding: 14px 20px;
    background-color: var(--primary);
    color: white;
    border: none;
    border-radius: 24px;
    cursor: pointer;
    font-weight: 500;
    transition: all 0.2s ease;
    flex-shrink: 0;
}

.input-container button:hover {
    background-color: var(--primary-dark);
    transform: translateY(-1px);
}

.input-container button:active {
    transform: translateY(0);
}

/* 下拉菜单样式 */
.dropdown {
    position: relative;
    display: inline-block;
}

.more-btn {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    padding: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: var(--messages-bg-light);
    color: var(--text-light);
}

.more-btn:hover {
    background-color: rgba(0,0,0,0.05);
    transform: none;
}

.dropdown-content {
    display: none;
    position: absolute;
    bottom: 100%;
    right: 0;
    background-color: var(--chat-bg-light);
    min-width: 160px;
    box-shadow: var(--shadow);
    border-radius: var(--small-radius);
    z-index: 100;
    margin-bottom: 8px;
    overflow: hidden;
}

.dropdown-content.show {
    display: block;
    animation: slideUp 0.2s ease;
}

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

.dropdown-item {
    padding: 12px 16px;
    display: flex;
    align-items: center;
    gap: 8px;
    cursor: pointer;
    transition: background-color 0.2s;
}

.dropdown-item:hover {
    background-color: var(--messages-bg-light);
}

/* 加载动画 */
.loading {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    padding: 10px 0;
    color: #6B7280;
}

.loader {
    width: 16px;
    height: 16px;
    border: 2px solid #ddd;
    border-bottom-color: var(--primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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

/* 消息格式化样式 */
.message-content p {
    margin: 8px 0;
}

.message-content .bold-text {
    font-weight: 600;
}

.message-content .section-title {
    font-weight: 600;
    margin: 12px 0 6px 0;
}

.message-content .subsection {
    margin: 6px 0 6px 16px;
}

.message-content .subtitle {
    font-weight: 600;
}

/* 深色模式 */
body.dark-mode {
    background-color: var(--bg-dark);
    color: var(--text-dark);
}

.dark-mode .chat-container {
    background-color: var(--chat-bg-dark);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
}

.dark-mode .messages {
    background-color: var(--messages-bg-dark);
}

.dark-mode .message.bot .message-content {
    background-color: var(--bot-bubble-dark);
    color: var(--text-dark);
}

.dark-mode .message.user .message-content {
    background-color: var(--primary);
}

.dark-mode .input-container {
    border-top-color: var(--border-dark);
    background-color: var(--chat-bg-dark);
}

.dark-mode .input-container input {
    background-color: var(--messages-bg-dark);
    border-color: var(--border-dark);
    color: var(--text-dark);
}

.dark-mode .input-container input:focus {
    box-shadow: 0 0 0 2px rgba(79, 70, 229, 0.3);
}

.dark-mode .dropdown-content {
    background-color: var(--chat-bg-dark);
}

.dark-mode .dropdown-item {
    color: var(--text-dark);
}

.dark-mode .dropdown-item:hover {
    background-color: rgba(255,255,255,0.05);
}

.dark-mode .more-btn {
    background-color: var(--messages-bg-dark);
    color: var(--text-dark);
}

.dark-mode .more-btn:hover {
    background-color: rgba(255,255,255,0.05);
}

.dark-mode .loading {
    color: #9CA3AF;
}

.dark-mode .loader {
    border-color: #374151;
    border-bottom-color: var(--primary-light);
}

/* 响应式调整 */
@media (max-width: 600px) {
    .chat-container {
        height: 100vh;
        border-radius: 0;
        padding: 0;
        margin: 0;
    }
    
    .message-content {
        max-width: 85%;
        font-size: 14px;
    }
    
    .input-container {
        padding: 12px;
    }
}