/* 
 * Box DeepSeek Chat - Frontend Styles
 * A modern, clean chat UI inspired by leading AI chat platforms.
 */

:root {
    --chat-bg-color: #ffffff;
    --sidebar-bg-color: #f9fafb;
    --message-user-bg-color: #eef2ff;
    --message-assistant-bg-color: #ffffff;
    --border-color: #e5e7eb;
    --text-primary: #1f2937;
    --text-secondary: #6b7280;
    --accent-color: #4f46e5;
    --accent-color-hover: #4338ca;
    --code-bg-color: #1e1e1e;
    --code-header-bg-color: #3a3a3a;
}

/* 主容器 */
.box-deepseek-chat-wrapper {
    display: flex;
    height: 80vh; /* 使用视口高度 */
    min-height: 600px;
    max-width: 1400px;
    margin: 2rem auto;
    border: 1px solid var(--border-color);
    border-radius: 12px;
    overflow: hidden;
    background-color: var(--chat-bg-color);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

/* 侧边栏 */
.box-deepseek-chat-sidebar {
    width: 280px;
    background-color: var(--sidebar-bg-color);
    border-right: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    transition: width 0.3s ease;
    flex-shrink: 0;
}

.box-deepseek-chat-sidebar-header {
    padding: 1rem;
    border-bottom: 1px solid var(--border-color);
}

.box-deepseek-new-chat-btn {
    width: 100%;
    padding: 0.75rem;
    border-radius: 8px;
    border: none;
    background-color: var(--accent-color);
    color: white;
    font-size: 1rem;
    font-weight: 500;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    transition: background-color 0.2s;
}

.box-deepseek-new-chat-btn:hover {
    background-color: var(--accent-color-hover);
}

.box-deepseek-new-chat-btn:disabled {
    background-color: #d1d5db;
    cursor: not-allowed;
}

.box-deepseek-chat-history {
    flex: 1;
    overflow-y: auto;
    padding: 0.5rem;
}

#box-deepseek-history-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

#box-deepseek-history-list li {
    display: flex;
    align-items: center;
    padding: 0.75rem 1rem;
    border-radius: 8px;
    cursor: pointer;
    margin-bottom: 0.25rem;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    position: relative;
    font-size: 0.9rem;
    color: var(--text-primary);
    transition: background-color 0.2s, color 0.2s;
}

#box-deepseek-history-list li:hover {
    background-color: #f3f4f6;
}
#box-deepseek-history-list li.active {
    background-color: var(--message-user-bg-color);
    color: var(--accent-color);
    font-weight: 500;
}

.history-item-title {
    flex-grow: 1;
    overflow: hidden;
    text-overflow: ellipsis;
}

#box-deepseek-history-list li .history-item-actions {
    position: absolute;
    right: 0.5rem;
    top: 50%;
    transform: translateY(-50%);
    display: none;
    gap: 0.25rem;
    background: linear-gradient(to left, #f3f4f6 70%, transparent 100%);
    padding: 0.25rem 0.5rem 0.25rem 1rem;
}
#box-deepseek-history-list li.active .history-item-actions {
    background: linear-gradient(to left, var(--message-user-bg-color) 70%, transparent 100%);
}


#box-deepseek-history-list li:hover .history-item-actions {
    display: flex;
}

#box-deepseek-history-list li .history-item-actions button {
    background: none;
    border: none;
    cursor: pointer;
    color: var(--text-secondary);
    padding: 0.25rem;
    border-radius: 4px;
    font-size: 1rem;
    line-height: 1;
}
#box-deepseek-history-list li .history-item-actions button:hover {
    color: var(--text-primary);
    background-color: rgba(0,0,0,0.05);
}


.box-deepseek-chat-sidebar-footer {
    padding: 0.75rem;
    border-top: 1px solid var(--border-color);
}

.box-deepseek-chat-sidebar-footer a {
    text-decoration: none;
    color: inherit;
    display: block;
    border-radius: 8px;
    transition: background-color 0.2s;
}

.box-deepseek-chat-sidebar-footer a:hover {
    background-color: #f3f4f6;
}

.user-profile {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.25rem;
    cursor: pointer;
}

.user-info {
    flex-grow: 1;
    overflow: hidden;
    text-align: left;
}

.user-profile .avatar, 
.user-profile .avatar-placeholder {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    flex-shrink: 0;
}

.user-profile .avatar-placeholder {
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: #e5e7eb;
    color: var(--text-secondary);
}

.user-profile .user-name {
    display: block;
    font-weight: 500;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.user-credit {
    display: block;
    font-size: 0.8rem;
    color: var(--text-secondary);
    margin-top: 2px;
}

.user-credit .b2-coin-line {
    vertical-align: -2px;
    font-size: 1rem;
    margin-right: 2px;
}

.user-profile .logout-link {
    color: var(--text-secondary);
    line-height: 1;
    font-size: 1.25rem;
}

.user-profile .logout-link:hover {
    color: var(--text-primary);
}

/* 主聊天区 */
.box-deepseek-chat-container {
    flex: 1;
    display: flex;
    flex-direction: column;
    background-color: var(--chat-bg-color);
    position: relative;
}

.box-deepseek-chat-messages {
    flex: 1;
    overflow-y: auto;
    padding: 2rem;
}

.box-deepseek-chat-message {
    display: flex;
    margin-bottom: 2rem;
    animation: fadeIn 0.5s ease-in-out;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(15px); }
    to { opacity: 1; transform: translateY(0); }
}

/* 用户消息 */
.box-deepseek-chat-message.user {
    flex-direction: row-reverse;
}

.box-deepseek-chat-message .box-deepseek-chat-avatar {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background-color: var(--accent-color);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    margin-right: 1rem;
    overflow: hidden;
}
.box-deepseek-chat-message.user .box-deepseek-chat-avatar {
    margin-right: 0;
    margin-left: 1rem;
}

.box-deepseek-chat-message .box-deepseek-chat-avatar img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.box-deepseek-chat-content {
    max-width: 90%;
    padding: 1rem;
    border-radius: 8px;
    font-size: 1rem;
    line-height: 1.6;
    word-wrap: break-word;
}

.box-deepseek-chat-message.user .box-deepseek-chat-content {
    background-color: var(--accent-color);
    color: white;
}

.box-deepseek-chat-message.assistant .box-deepseek-chat-content {
    background-color: var(--message-assistant-bg-color);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
}

.box-deepseek-chat-content p:last-child {
    margin-bottom: 0;
}

/* 代码块 */
.box-deepseek-chat-content .code-block {
    border-radius: 12px;
    overflow: hidden;
    margin: 1rem 0;
    border: 1px solid var(--border-color);
    background-color: #f9fafb;
}
.box-deepseek-chat-content .code-block-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    background-color: #f3f4f6;
    padding: 0.6rem 1rem;
    color: var(--text-secondary);
    font-size: 0.85rem;
    border-bottom: 1px solid var(--border-color);
}
.code-block-header .language-name {
    font-weight: 500;
    text-transform: uppercase;
}
.code-block-actions {
    display: flex;
    gap: 0.5rem;
}
.code-action-btn {
    background-color: transparent;
    border: none;
    color: var(--text-secondary);
    padding: 0.25rem 0.5rem;
    border-radius: 6px;
    cursor: pointer;
    font-size: 0.8rem;
    transition: background-color 0.2s, color 0.2s;
    display: flex;
    align-items: center;
    gap: 0.3rem;
    line-height: 1;
}
.code-action-btn:hover {
    background-color: #e5e7eb;
    color: var(--text-primary);
}
.code-action-btn.copied {
    color: var(--accent-color);
}
.code-action-btn i {
    font-size: 1rem;
}

.box-deepseek-chat-content pre {
    background-color: transparent;
    color: var(--text-primary);
    padding: 1rem;
    margin: 0;
    overflow-x: auto;
    font-family: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, Courier, monospace;
    font-size: 0.9rem;
}
.box-deepseek-chat-content pre code {
    background-color: transparent;
    padding: 0;
    color: inherit;
}
.box-deepseek-chat-content code:not(pre > code) {
    background-color: rgba(0,0,0,0.05);
    padding: 0.2em 0.4em;
    border-radius: 4px;
    font-size: 85%;
}

/* 输入区域 */
.box-deepseek-chat-form {
    padding: 1rem 2rem;
    border-top: 1px solid var(--border-color);
    background-color: var(--chat-bg-color);
    position: relative;
}

.box-deepseek-chat-input {
    width: 100%;
    min-height: 52px;
    max-height: 200px;
    padding: 0.875rem 3.5rem 0.875rem 1rem;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    resize: none;
    font-size: 1rem;
    line-height: 1.6;
    font-family: inherit;
    outline: none;
    transition: border-color 0.2s, box-shadow 0.2s;
    box-sizing: border-box;
}

.box-deepseek-chat-input:focus {
    border-color: var(--accent-color);
    box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.1);
}

.box-deepseek-chat-submit {
    position: absolute;
    right: 2.5rem;
    bottom: 1.8rem;
    width: 36px;
    height: 36px;
    background-color: var(--accent-color);
    color: white;
    border: none;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background-color 0.2s, transform 0.2s, box-shadow 0.2s;
    box-shadow: 0 1px 3px rgba(0,0,0,0.1);
}
.box-deepseek-chat-submit i {
    font-size: 22px;
    line-height: 1;
}
.box-deepseek-chat-submit:hover {
    background-color: var(--accent-color-hover);
    transform: scale(1.05);
    box-shadow: 0 4px 10px rgba(79, 70, 229, 0.2);
}
.box-deepseek-chat-submit:disabled {
    background-color: #ccc;
    cursor: not-allowed;
    transform: none;
    box-shadow: none;
}

/* 消息加载和错误 */
.box-deepseek-chat-loading { font-style: italic; color: var(--text-secondary); }
.box-deepseek-chat-error { color: #dc2626; }
.box-deepseek-chat-error-container { border: 1px solid #fecaca; background-color: #fef2f2; padding: 1rem; border-radius: 8px;}

/* 响应式 */
@media (max-width: 900px) {
    .box-deepseek-chat-sidebar {
        position: absolute;
        left: -100%;
        width: 280px;
        z-index: 10;
        height: 100%;
        transition: left 0.3s ease;
        box-shadow: 2px 0 10px rgba(0,0,0,0.1);
    }
    .box-deepseek-chat-sidebar.is-open {
        left: 0;
    }
    /* 在这里可以添加一个汉堡按钮来控制侧边栏的开关 */
}

/* 打字机光标 */
.box-deepseek-chat-cursor {
    display: inline-block;
    width: 2px;
    height: 1em;
    background-color: var(--text-primary);
    margin-left: 2px;
    animation: blink 1s infinite;
    vertical-align: text-bottom;
}

@keyframes blink {
    50% { opacity: 0; }
}

/* 模型选择器 */
.box-deepseek-model-selector-wrapper {
    padding: 0.75rem 2rem;
    border-top: 1px solid var(--border-color);
    background-color: var(--chat-bg-color);
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 0.9rem;
}
#box-deepseek-model-selector {
    padding: 0.4rem 0.6rem;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    background-color: #fff;
    flex-grow: 1;
}

/* Custom Confirm Modal */
.box-deepseek-confirm-modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 9999;
    display: flex;
    align-items: center;
    justify-content: center;
    animation: fadeInModal 0.2s ease;
    padding: 1rem;
}

.box-deepseek-confirm-modal .modal-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.4);
}

.box-deepseek-confirm-modal .modal-content {
    background-color: #fff;
    padding: 1.5rem;
    border-radius: 12px;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
    width: 90%;
    max-width: 420px;
    z-index: 1;
    text-align: left;
    border: 1px solid var(--border-color);
}

.box-deepseek-confirm-modal .modal-title {
    font-size: 1.1rem;
    font-weight: 600;
    margin-top: 0;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.box-deepseek-confirm-modal .modal-message p {
    margin: 0.5rem 0;
    line-height: 1.6;
    font-size: 0.9rem;
    color: var(--text-secondary);
}
.box-deepseek-confirm-modal .modal-message p:last-child {
    margin-top: 1rem;
}


.box-deepseek-confirm-modal .modal-actions {
    margin-top: 1.5rem;
    display: flex;
    justify-content: flex-end;
    gap: 0.75rem;
}

.box-deepseek-confirm-modal .modal-btn {
    padding: 0.5rem 1rem;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    font-size: 0.9rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s;
}

.box-deepseek-confirm-modal .btn-confirm {
    background-color: var(--accent-color);
    color: #fff;
    border-color: var(--accent-color);
}

.box-deepseek-confirm-modal .btn-confirm:hover {
    background-color: var(--accent-color-hover);
}

.box-deepseek-confirm-modal .btn-cancel {
    background-color: #fff;
    color: var(--text-primary);
}

.box-deepseek-confirm-modal .btn-cancel:hover {
    background-color: #f3f4f6;
}

@keyframes fadeInModal {
    from { opacity: 0; transform: scale(0.95); }
    to { opacity: 1; transform: scale(1); }
} 