/* AI对话页面样式 */
:root {
    --primary-color: #6366f1;
    --primary-hover: #4f46e5;
    --bg-color: #0f0f0f;
    --sidebar-bg: #171717;
    --chat-bg: #0f0f0f;
    --input-bg: #262626;
    --border-color: #333;
    --text-color: #e5e5e5;
    --text-muted: #a3a3a3;
    --message-user-bg: #2563eb;
    --message-ai-bg: #262626;
    --success-color: #22c55e;
    --warning-color: #f59e0b;
    --danger-color: #ef4444;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background-color: var(--bg-color);
    color: var(--text-color);
    height: 100vh;
    overflow: hidden;
}

.chat-container {
    display: flex;
    height: 100vh;
}

/* 侧边栏 */
.sidebar {
    width: 280px;
    background-color: var(--sidebar-bg);
    border-right: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    flex-shrink: 0;
}

.sidebar-header {
    padding: 16px;
    border-bottom: 1px solid var(--border-color);
}

.sidebar-header h2 {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 12px;
}

.btn-new-chat {
    width: 100%;
    padding: 10px 16px;
    background-color: var(--primary-color);
    color: white;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    font-size: 14px;
    transition: background-color 0.2s;
}

.btn-new-chat:hover {
    background-color: var(--primary-hover);
}

.conversation-list {
    flex: 1;
    overflow-y: auto;
    padding: 8px;
}

.conversation-item {
    padding: 12px;
    border-radius: 8px;
    cursor: pointer;
    margin-bottom: 4px;
    transition: background-color 0.2s;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.conversation-item:hover {
    background-color: var(--input-bg);
}

.conversation-item.active {
    background-color: var(--input-bg);
}

.conversation-title {
    flex: 1;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    font-size: 14px;
}

.conversation-delete {
    opacity: 0;
    background: none;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    padding: 4px;
    transition: opacity 0.2s, color 0.2s;
}

.conversation-item:hover .conversation-delete {
    opacity: 1;
}

.conversation-delete:hover {
    color: var(--danger-color);
}

/* 主内容区 */
.main-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    min-width: 0;
}

/* 头部 */
.chat-header {
    padding: 12px 24px;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
    background-color: var(--sidebar-bg);
}

.model-selector select {
    padding: 8px 12px;
    background-color: var(--input-bg);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    color: var(--text-color);
    font-size: 14px;
    cursor: pointer;
    min-width: 180px;
}

.model-selector select:focus {
    outline: none;
    border-color: var(--primary-color);
}

.header-actions {
    display: flex;
    align-items: center;
    gap: 12px;
}

.btn-share {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 8px 14px;
    background-color: var(--input-bg);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    color: var(--text-color);
    font-size: 13px;
    cursor: pointer;
    transition: all 0.2s;
}

.btn-share:hover {
    background-color: var(--primary-color);
    border-color: var(--primary-color);
}

.btn-share svg {
    flex-shrink: 0;
}

/* Toast 提示 */
.toast-message {
    position: fixed;
    bottom: 80px;
    left: 50%;
    transform: translateX(-50%) translateY(20px);
    background-color: rgba(0, 0, 0, 0.85);
    color: white;
    padding: 12px 24px;
    border-radius: 8px;
    font-size: 14px;
    opacity: 0;
    transition: all 0.3s ease;
    z-index: 9999;
}

.toast-message.show {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
}

.user-area {
    display: flex;
    align-items: center;
    gap: 12px;
}

.user-info {
    display: flex;
    align-items: center;
    gap: 8px;
}

.user-avatar {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background-color: var(--primary-color);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 14px;
    font-weight: 600;
}

.user-avatar img {
    width: 100%;
    height: 100%;
    border-radius: 50%;
    object-fit: cover;
}

.user-name {
    font-size: 14px;
}

.vip-badge {
    background: linear-gradient(135deg, #f59e0b, #d97706);
    color: white;
    font-size: 10px;
    padding: 2px 6px;
    border-radius: 4px;
    font-weight: 600;
}

.btn-login {
    padding: 8px 16px;
    background-color: var(--primary-color);
    color: white;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    font-size: 14px;
    transition: background-color 0.2s;
}

.btn-login:hover {
    background-color: var(--primary-hover);
}

/* 消息区域 */
.messages-container {
    flex: 1;
    overflow-y: auto;
    padding: 24px;
}

.messages-wrapper {
    max-width: 800px;
    margin: 0 auto;
}

.welcome-message {
    text-align: center;
    padding: 60px 20px;
    color: var(--text-muted);
}

.welcome-message h1 {
    font-size: 24px;
    margin-bottom: 12px;
    color: var(--text-color);
}

/* 消息容器 - 豆包风格 */
.message {
    margin-bottom: 24px;
    display: flex;
    gap: 12px;
    width: 100%;
}

/* 用户消息：整体靠右，头像在右边 */
.message.user {
    flex-direction: row-reverse;
}

/* AI消息：整体靠左，头像在左边（默认） */
.message.assistant {
    flex-direction: row;
}

/* 头像样式 */
.message-avatar {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    font-size: 14px;
    font-weight: 600;
    overflow: hidden;
    align-self: flex-start;
}

.message-avatar .avatar-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.message.user .message-avatar {
    background: linear-gradient(135deg, #3b82f6, #2563eb);
}

.message.assistant .message-avatar {
    background: linear-gradient(135deg, #6366f1, #8b5cf6);
}

/* 消息内容区域 */
.message-content {
    max-width: 75%;
    min-width: 0;
}

/* 隐藏角色名称，更简洁 */
.message-role {
    display: none;
}

/* 用户消息气泡 - 蓝色，右侧圆角小 */
.message.user .message-text {
    background: linear-gradient(135deg, #3b82f6, #2563eb);
    color: #fff;
    padding: 12px 16px;
    border-radius: 18px 18px 4px 18px;
    display: inline-block;
    word-break: break-word;
}

/* AI消息气泡 - 深灰色，左侧圆角小 */
.message.assistant .message-text {
    background-color: rgba(255, 255, 255, 0.08);
    border: 1px solid rgba(255, 255, 255, 0.1);
    padding: 12px 16px;
    border-radius: 18px 18px 18px 4px;
    word-break: break-word;
}

.message-role {
    font-size: 13px;
    font-weight: 600;
    margin-bottom: 6px;
    color: var(--text-muted);
}

.message-text {
    font-size: 15px;
    line-height: 1.7;
}

.message-text p {
    margin-bottom: 12px;
}

.message-text p:last-child {
    margin-bottom: 0;
}

.message-text pre {
    background-color: #1e1e1e;
    border-radius: 8px;
    padding: 16px;
    overflow-x: auto;
    margin: 12px 0;
}

.message-text code {
    font-family: 'Fira Code', 'Consolas', monospace;
    font-size: 13px;
}

.message-text code:not(pre code) {
    background-color: var(--input-bg);
    padding: 2px 6px;
    border-radius: 4px;
}

/* 输入区域 */
.input-container {
    padding: 16px 24px 24px;
    background-color: var(--chat-bg);
}

.input-wrapper {
    max-width: 800px;
    margin: 0 auto;
    display: flex;
    gap: 12px;
    background-color: var(--input-bg);
    border-radius: 12px;
    padding: 12px 16px;
    border: 1px solid var(--border-color);
}

.input-wrapper:focus-within {
    border-color: var(--primary-color);
}

#messageInput {
    flex: 1;
    background: none;
    border: none;
    color: var(--text-color);
    font-size: 15px;
    resize: none;
    max-height: 200px;
    line-height: 1.5;
}

#messageInput:focus {
    outline: none;
}

#messageInput::placeholder {
    color: var(--text-muted);
}

#messageInput:disabled {
    cursor: not-allowed;
}

.btn-send {
    width: 40px;
    height: 40px;
    background-color: var(--primary-color);
    border: none;
    border-radius: 8px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    transition: background-color 0.2s, opacity 0.2s;
}

.btn-send:hover:not(:disabled) {
    background-color: var(--primary-hover);
}

.btn-send:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

/* 语音按钮 */
.btn-voice {
    width: 40px;
    height: 40px;
    background-color: transparent;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-muted);
    transition: background-color 0.2s, color 0.2s, border-color 0.2s;
}

.btn-voice:hover:not(:disabled) {
    background-color: var(--input-bg);
    color: var(--text-color);
    border-color: var(--primary-color);
}

.btn-voice:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.btn-voice.recording {
    background-color: var(--danger-color);
    border-color: var(--danger-color);
    color: white;
    animation: pulse 1.5s infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.6; }
}

.input-footer {
    max-width: 800px;
    margin: 8px auto 0;
    text-align: center;
}

.hint {
    font-size: 12px;
    color: var(--text-muted);
}

/* 弹窗 */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(0, 0, 0, 0.7);
    z-index: 1000;
    align-items: center;
    justify-content: center;
}

.modal.show {
    display: flex;
}

.modal-content {
    background-color: var(--sidebar-bg);
    border-radius: 12px;
    width: 100%;
    max-width: 400px;
    border: 1px solid var(--border-color);
}

.modal-header {
    padding: 16px 20px;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.modal-header h3 {
    font-size: 18px;
}

.btn-close {
    background: none;
    border: none;
    color: var(--text-muted);
    font-size: 24px;
    cursor: pointer;
    line-height: 1;
}

.btn-close:hover {
    color: var(--text-color);
}

.modal-body {
    padding: 20px;
    text-align: center;
}

.modal-body p {
    margin-bottom: 16px;
    color: var(--text-muted);
}

.oauth-buttons {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.btn-oauth {
    padding: 12px 20px;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    cursor: pointer;
    font-size: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    transition: background-color 0.2s;
}

.btn-gitee {
    background-color: #c71d23;
    color: white;
    border-color: #c71d23;
}

.btn-gitee:hover {
    background-color: #a8181d;
}

.btn-github {
    background-color: #24292e;
    color: white;
    border-color: #24292e;
}

.btn-github:hover {
    background-color: #1a1e22;
}

.btn-primary {
    display: inline-block;
    padding: 12px 24px;
    background-color: var(--primary-color);
    color: white;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    font-size: 14px;
    text-decoration: none;
    transition: background-color 0.2s;
}

.btn-primary:hover {
    background-color: var(--primary-hover);
}

/* 加载动画 */
.typing-indicator {
    display: flex;
    gap: 4px;
    padding: 8px 0;
}

.typing-indicator span {
    width: 8px;
    height: 8px;
    background-color: var(--text-muted);
    border-radius: 50%;
    animation: typing 1.4s infinite ease-in-out;
}

.typing-indicator span:nth-child(1) { animation-delay: 0s; }
.typing-indicator span:nth-child(2) { animation-delay: 0.2s; }
.typing-indicator span:nth-child(3) { animation-delay: 0.4s; }

@keyframes typing {
    0%, 60%, 100% { transform: translateY(0); }
    30% { transform: translateY(-8px); }
}

/* 响应式 */
@media (max-width: 768px) {
    .sidebar {
        position: fixed;
        left: -280px;
        top: 0;
        bottom: 0;
        z-index: 100;
        transition: left 0.3s;
    }

    .sidebar.show {
        left: 0;
    }

    .chat-header {
        padding: 12px 16px;
    }

    .messages-container {
        padding: 16px;
    }

    .input-container {
        padding: 12px 16px 16px;
    }
}

/* 滚动条样式 */
::-webkit-scrollbar {
    width: 6px;
}

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

::-webkit-scrollbar-thumb {
    background-color: var(--border-color);
    border-radius: 3px;
}

::-webkit-scrollbar-thumb:hover {
    background-color: var(--text-muted);
}

/* VIP升级提示 */
.vip-upgrade-hint {
    text-align: center;
    padding: 80px 20px;
    max-width: 400px;
    margin: 0 auto;
}

.vip-upgrade-hint .hint-icon {
    font-size: 64px;
    margin-bottom: 24px;
}

.vip-upgrade-hint h2 {
    font-size: 24px;
    margin-bottom: 16px;
    color: var(--text-color);
}

.vip-upgrade-hint p {
    color: var(--text-muted);
    margin-bottom: 12px;
    font-size: 15px;
}

.vip-upgrade-hint .btn-upgrade {
    display: inline-block;
    margin-top: 24px;
    padding: 14px 32px;
    background: linear-gradient(135deg, #f59e0b, #d97706);
    color: white;
    border: none;
    border-radius: 8px;
    font-size: 16px;
    font-weight: 600;
    text-decoration: none;
    cursor: pointer;
    transition: transform 0.2s, box-shadow 0.2s;
}

.vip-upgrade-hint .btn-upgrade:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(245, 158, 11, 0.3);
}