/* 全局样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-color: #8b5cf6;
    --primary-light: #a78bfa;
    --primary-dark: #6d28d9;
    --accent-color: #06b6d4;
    --accent-light: #22d3ee;
    --bg-light: rgba(15, 23, 42, 0.7);
    --text-primary: #f8fafc;
    --text-secondary: #94a3b8;
    --border-color: rgba(99, 102, 241, 0.4);
    --success-color: #10b981;
    --warning-color: #f59e0b;
    --sidebar-width: 280px;
    --glow-color: rgba(139, 92, 246, 0.6);
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
    background: #1a1a1a;
    color: var(--text-primary);
    height: 100vh;
    overflow: hidden;
    position: relative;
}

#app {
    height: 100%;
    display: flex;
    position: relative;
}

.container {
    display: flex;
    width: 100%;
    height: 100%;
    position: relative;
    z-index: 1;
}

/* 侧边栏样式 */
.sidebar {
    width: var(--sidebar-width);
    background: #252525;
    border-right: 1px solid #333;
    display: flex;
    flex-direction: column;
}

.sidebar-header {
    padding: 24px 20px;
    border-bottom: 1px solid var(--border-color);
}

.app-title {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 20px;
}

.logo-icon {
    font-size: 32px;
    filter: drop-shadow(0 0 12px var(--glow-color));
    animation: pulseGlow 2.5s ease-in-out infinite;
}

@keyframes pulseGlow {
    0%, 100% {
        transform: scale(1);
        filter: drop-shadow(0 0 12px var(--glow-color));
    }
    50% {
        transform: scale(1.05);
        filter: drop-shadow(0 0 18px var(--glow-color));
    }
}

.title-text {
    font-size: 24px;
    font-weight: 700;
    background: linear-gradient(135deg, var(--primary-light), var(--accent-light));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.new-chat-btn {
    width: 100%;
    padding: 14px 20px;
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    color: white;
    border: none;
    border-radius: 14px;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    box-shadow: 0 4px 15px rgba(139, 92, 246, 0.3);
}

.new-chat-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(139, 92, 246, 0.5);
}

.new-chat-btn i {
    font-size: 16px;
}

.chat-list {
    flex: 1;
    overflow-y: auto;
    padding: 12px 16px;
}

.chat-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 14px 16px;
    border-radius: 12px;
    cursor: pointer;
    transition: all 0.2s ease;
    margin-bottom: 6px;
    background: transparent;
    border: 1px solid transparent;
}

.chat-item:hover {
    background: rgba(139, 92, 246, 0.15);
    transform: translateX(2px);
}

.chat-item.active {
    background: rgba(139, 92, 246, 0.25);
    border-color: var(--primary-color);
}

.chat-title {
    flex: 1;
    font-size: 14px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    color: var(--text-primary);
}

.delete-btn {
    opacity: 0;
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 8px;
    color: var(--text-secondary);
    transition: all 0.2s;
    cursor: pointer;
    background: transparent;
    border: none;
}

.chat-item:hover .delete-btn {
    opacity: 0.6;
}

.delete-btn:hover {
    opacity: 1 !important;
    background: rgba(239, 68, 68, 0.15) !important;
    color: #ef4444;
}

.sidebar-footer {
    padding: 20px;
    border-top: 1px solid var(--border-color);
}

.model-info {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 11px;
    color: var(--text-secondary);
    word-break: break-all;
}

.model-info i {
    font-size: 12px;
}

/* 用户信息与登出 */
.user-info {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 13px;
    color: var(--text-secondary);
    margin-bottom: 10px;
}

.user-info span {
    flex: 1;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.logout-btn {
    background: transparent;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    padding: 4px 6px;
    border-radius: 4px;
    transition: all 0.2s;
}

.logout-btn:hover {
    color: #ff6b6b;
    background: rgba(255, 107, 107, 0.1);
}

.admin-entry-btn {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 9px 12px;
    margin-bottom: 12px;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    background: rgba(139, 92, 246, 0.1);
    color: var(--primary-light);
    cursor: pointer;
    transition: all 0.2s ease;
}

.admin-entry-btn:hover {
    color: white;
    background: rgba(139, 92, 246, 0.25);
    border-color: var(--primary-color);
}

/* 主内容区域 */
.main-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    background: transparent;
}

/* 顶部装饰 */
.top-decoration {
    padding: 20px 0 0 0;
}

.decoration-line {
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--primary-color), var(--accent-color), transparent);
    width: 100%;
}

/* 消息容器 */
.messages-container {
    flex: 1;
    overflow-y: auto;
    padding: 30px 80px;
    scroll-behavior: smooth;
}

/* 空状态 */
.empty-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 100%;
    color: var(--text-secondary);
}

.empty-icon-wrapper {
    position: relative;
    margin-bottom: 24px;
}

.empty-icon {
    font-size: 100px;
    position: relative;
    z-index: 1;
    animation: floatIcon 4s ease-in-out infinite;
}

@keyframes floatIcon {
    0%, 100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(-15px);
    }
}

.icon-glow {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 150px;
    height: 150px;
    background: radial-gradient(circle, var(--glow-color), transparent);
    border-radius: 50%;
    filter: blur(30px);
    z-index: 0;
    animation: glowPulse 3s ease-in-out infinite;
}

@keyframes glowPulse {
    0%, 100% {
        opacity: 0.5;
        transform: translate(-50%, -50%) scale(1);
    }
    50% {
        opacity: 0.7;
        transform: translate(-50%, -50%) scale(1.05);
    }
}

.empty-state h2 {
    font-size: 32px;
    margin-bottom: 12px;
    color: var(--text-primary);
    font-weight: 700;
    background: linear-gradient(135deg, var(--primary-light), var(--accent-light));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    text-shadow: 0 0 30px rgba(139, 92, 246, 0.5);
}

.empty-state p {
    font-size: 16px;
    margin-bottom: 40px;
}

.quick-actions {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
    justify-content: center;
}

.quick-action {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 14px 24px;
    background: rgba(30, 41, 59, 0.6);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    cursor: pointer;
    transition: all 0.2s ease;
    font-size: 14px;
}

.quick-action:hover {
    background: var(--primary-color);
    border-color: var(--primary-color);
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(139, 92, 246, 0.4);
}

.quick-action i {
    font-size: 18px;
}

/* 消息样式 */
.message {
    display: flex;
    gap: 16px;
    margin-bottom: 36px;
    animation: fadeIn 0.5s ease;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.message-avatar {
    width: 44px;
    height: 44px;
    border-radius: 14px;
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 22px;
    flex-shrink: 0;
    box-shadow: 0 4px 15px rgba(139, 92, 246, 0.3);
}

.message.user .message-avatar {
    background: linear-gradient(135deg, #64748b, #475569);
}

.message-content {
    flex: 1;
    min-width: 0;
    padding-top: 6px;
}

.user-message {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    color: white;
    padding: 16px 20px;
    border-radius: 20px 20px 6px 20px;
    display: inline-block;
    max-width: 70%;
    line-height: 1.7;
    box-shadow: 0 4px 15px rgba(139, 92, 246, 0.3);
}

.user-message .file-attachment {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: rgba(255, 255, 255, 0.15);
    padding: 10px 16px;
    border-radius: 10px;
    margin-bottom: 12px;
    font-size: 13px;
}

.user-message .file-attachment i {
    font-size: 16px;
}

.ai-message {
    color: var(--text-primary);
}

/* 推理过程 - 统一时间线（思考+工具调用） */
.timeline-section {
    margin-bottom: 20px;
    border-radius: 16px;
    overflow: hidden;
    border: 1px solid rgba(139, 92, 246, 0.3);
    background: rgba(15, 23, 42, 0.5);
    backdrop-filter: blur(10px);
}

.timeline-header {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 18px;
    background: rgba(139, 92, 246, 0.15);
    cursor: pointer;
    font-size: 14px;
    color: var(--text-secondary);
    transition: all 0.3s ease;
}

.timeline-header:hover {
    background: rgba(139, 92, 246, 0.25);
}

.timeline-icon-wrapper {
    width: 28px;
    height: 28px;
    background: rgba(139, 92, 246, 0.3);
    border-radius: 6px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.timeline-main-icon {
    font-size: 13px;
    color: var(--primary-light);
}

.timeline-title {
    flex: 1;
    font-weight: 600;
}

.timeline-content {
    padding: 14px 18px;
}

.timeline-item {
    display: flex;
    align-items: flex-start;
    gap: 14px;
    position: relative;
    padding-bottom: 14px;
    padding-left: 4px;
}

.timeline-item:last-child {
    padding-bottom: 0;
}

/* 连接线 */
.timeline-item:not(:last-child)::after {
    content: '';
    position: absolute;
    left: 7px;
    top: 20px;
    bottom: 0;
    width: 2px;
    background: rgba(100, 116, 139, 0.3);
}

.timeline-dot {
    width: 16px;
    height: 16px;
    border-radius: 50%;
    flex-shrink: 0;
    z-index: 1;
    margin-top: 2px;
}

.timeline-dot.thinking {
    background: rgba(139, 92, 246, 0.6);
    border: 2px solid var(--primary-light);
}

.timeline-dot.running {
    background: rgba(245, 158, 11, 0.6);
    border: 2px solid #f59e0b;
    animation: dotPulse 1.2s ease-in-out infinite;
}

.timeline-dot.completed {
    background: rgba(16, 185, 129, 0.6);
    border: 2px solid #10b981;
}

.timeline-dot.failed {
    background: rgba(239, 68, 68, 0.6);
    border: 2px solid #ef4444;
}

.timeline-dot.error {
    background: rgba(245, 158, 11, 0.6);
    border: 2px solid #f59e0b;
}

.timeline-error {
    display: flex;
    align-items: center;
    gap: 6px;
    color: #f59e0b;
    font-size: 0.85em;
}

.timeline-error i {
    color: #f59e0b;
}

.timeline-error-detail {
    color: var(--text-secondary);
    font-size: 0.9em;
    margin-left: 4px;
}

@keyframes dotPulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.4; }
}

.timeline-item-body {
    flex: 1;
    min-width: 0;
}

.timeline-thinking {
    font-size: 13px;
    color: var(--text-secondary);
    line-height: 1.6;
    white-space: pre-wrap;
    word-wrap: break-word;
}

.timeline-tool {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 13px;
}

.timeline-tool-icon {
    color: #22d3ee;
    font-size: 12px;
}

.timeline-tool-name {
    color: var(--text-primary);
    font-weight: 600;
}

.timeline-tool-status {
    display: flex;
    align-items: center;
    font-size: 12px;
}

.timeline-tool-status.running {
    color: #f59e0b;
}

.timeline-tool-status.completed {
    color: #10b981;
}

.timeline-tool-status.failed {
    color: #ef4444;
}

/* 思考中的加载动画 */
.thinking-loading {
    display: flex;
    gap: 8px;
    padding: 12px 0;
}

.thinking-loading .dot {
    width: 8px;
    height: 8px;
    background: var(--primary-light);
    border-radius: 50%;
    animation: thinkingBounce 1.4s infinite ease-in-out;
}

.thinking-loading .dot:nth-child(1) {
    animation-delay: 0s;
}

.thinking-loading .dot:nth-child(2) {
    animation-delay: 0.2s;
}

.thinking-loading .dot:nth-child(3) {
    animation-delay: 0.4s;
}

@keyframes thinkingBounce {
    0%, 60%, 100% {
        transform: translateY(0);
        opacity: 0.4;
    }
    30% {
        transform: translateY(-12px);
        opacity: 1;
    }
}

/* 文本内容样式 */
.text-content {
    line-height: 1.8;
    font-size: 15px;
}

/* Markdown 样式 */
.markdown-body {
    color: var(--text-primary);
}

.markdown-body h1,
.markdown-body h2,
.markdown-body h3,
.markdown-body h4,
.markdown-body h5,
.markdown-body h6 {
    color: var(--text-primary);
    margin: 24px 0 14px 0;
    font-weight: 700;
}

.markdown-body h1 {
    font-size: 28px;
    padding-bottom: 12px;
    border-bottom: 1px solid var(--border-color);
}

.markdown-body h2 {
    font-size: 24px;
}

.markdown-body h3 {
    font-size: 20px;
}

.markdown-body p {
    margin: 12px 0;
}

.markdown-body code {
    background: rgba(139, 92, 246, 0.15);
    padding: 4px 10px;
    border-radius: 6px;
    font-family: 'Consolas', 'Monaco', 'Courier New', monospace;
    font-size: 13px;
    color: #e879f9;
    border: 1px solid rgba(139, 92, 246, 0.3);
}

.markdown-body pre {
    background: rgba(10, 15, 30, 0.8);
    padding: 18px;
    border-radius: 14px;
    overflow-x: auto;
    margin: 18px 0;
    border: 1px solid var(--border-color);
    backdrop-filter: blur(10px);
}

.markdown-body pre code {
    background: transparent;
    padding: 0;
    color: inherit;
    border: none;
}

.markdown-body blockquote {
    border-left: 4px solid var(--primary-color);
    padding-left: 18px;
    margin: 16px 0;
    color: var(--text-secondary);
    font-style: italic;
    background: rgba(139, 92, 246, 0.05);
    padding: 14px 18px;
    border-radius: 0 12px 12px 0;
}

.markdown-body ul,
.markdown-body ol {
    padding-left: 28px;
    margin: 12px 0;
}

.markdown-body li {
    margin: 8px 0;
    line-height: 1.7;
}

.markdown-body a {
    color: var(--primary-light);
    text-decoration: none;
    transition: color 0.2s;
}

.markdown-body a:hover {
    color: var(--accent-light);
    text-decoration: underline;
}

.markdown-body table {
    border-collapse: collapse;
    width: 100%;
    margin: 18px 0;
    border-radius: 8px;
    overflow: hidden;
}

.markdown-body th,
.markdown-body td {
    border: 1px solid var(--border-color);
    padding: 12px 16px;
    text-align: left;
}

.markdown-body th {
    background: rgba(139, 92, 246, 0.15);
    font-weight: 600;
    color: var(--primary-light);
}

.markdown-body tr:hover {
    background: rgba(139, 92, 246, 0.05);
}

/* 参考链接样式 */
.reference-section {
    margin-top: 24px;
    border-radius: 12px;
    overflow: hidden;
    border: 1px solid rgba(6, 182, 212, 0.25);
    background: rgba(6, 182, 212, 0.08);
}

.reference-header {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 14px 18px;
    background: rgba(6, 182, 212, 0.12);
    cursor: pointer;
    font-size: 14px;
    color: var(--text-secondary);
    transition: all 0.3s ease;
}

.reference-header:hover {
    background: rgba(6, 182, 212, 0.18);
}

.reference-icon-wrapper {
    width: 32px;
    height: 32px;
    background: linear-gradient(135deg, rgba(6, 182, 212, 0.25), rgba(139, 92, 246, 0.25));
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.reference-icon {
    font-size: 15px;
    color: var(--accent-light);
}

.reference-title {
    flex: 1;
}

.reference-content {
    padding: 12px 14px;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.reference-link {
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 14px 16px;
    background: rgba(15, 23, 42, 0.4);
    border-radius: 12px;
    text-decoration: none;
    transition: all 0.25s ease;
    border: 1px solid rgba(6, 182, 212, 0.15);
}

.reference-link:hover {
    background: rgba(15, 23, 42, 0.7);
    border-color: rgba(6, 182, 212, 0.4);
}

.ref-icon {
    width: 36px;
    height: 36px;
    background: linear-gradient(135deg, var(--accent-color), var(--primary-color));
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.ref-icon i {
    font-size: 14px;
    color: white;
}

.ref-info {
    flex: 1;
    min-width: 0;
    max-width: 500px;
}

.ref-title-text {
    font-size: 14px;
    color: var(--text-primary);
    font-weight: 600;
    margin-bottom: 4px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.ref-url-text {
    font-size: 12px;
    color: var(--accent-light);
    opacity: 0.85;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    font-family: 'Consolas', 'Monaco', 'Courier New', monospace;
    max-width: 400px;
}

/* 推荐问题样式 */
.recommend-section {
    margin-top: 24px;
}

.recommend-items {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.recommend-item {
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 14px 16px;
    background: rgba(30, 41, 59, 0.5);
    border: 1px solid rgba(139, 92, 246, 0.25);
    border-radius: 12px;
    cursor: pointer;
    transition: all 0.25s ease;
    position: relative;
    overflow: hidden;
    width: fit-content;
    max-width: 500px;
}

.recommend-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(139, 92, 246, 0.1), rgba(6, 182, 212, 0.1));
    opacity: 0;
    transition: opacity 0.25s ease;
    z-index: 0;
}

.recommend-item:hover {
    background: rgba(30, 41, 59, 0.7);
    border-color: rgba(139, 92, 246, 0.5);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(139, 92, 246, 0.2);
}

.recommend-item:hover::before {
    opacity: 1;
}

.recommend-icon {
    width: 36px;
    height: 36px;
    background: linear-gradient(135deg, #f59e0b, #d97706);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    z-index: 1;
    position: relative;
}

.recommend-icon i {
    font-size: 16px;
    color: white;
}

.recommend-text {
    flex: 1;
    font-size: 14px;
    color: var(--text-primary);
    line-height: 1.6;
    z-index: 1;
    position: relative;
}

.recommend-arrow {
    width: 28px;
    height: 28px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    z-index: 1;
    position: relative;
    color: var(--text-secondary);
    opacity: 0;
    transform: translateX(-10px);
    transition: all 0.25s ease;
}

.recommend-item:hover .recommend-arrow {
    opacity: 1;
    transform: translateX(0);
    color: var(--primary-light);
}

.recommend-arrow i {
    font-size: 12px;
}

/* PPT下载 */
.ppt-download {
    margin-top: 20px;
}

.ppt-link {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    padding: 14px 28px;
    background: linear-gradient(135deg, var(--success-color), #059669);
    color: white;
    text-decoration: none;
    border-radius: 12px;
    font-size: 14px;
    font-weight: 600;
    transition: all 0.2s ease;
    box-shadow: 0 4px 15px rgba(16, 185, 129, 0.3);
}

.ppt-link:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(16, 185, 129, 0.5);
}

.ppt-link i {
    font-size: 16px;
}

/* Copy 按钮 */
.copy-btn {
    margin-top: 16px;
    width: 36px;
    height: 36px;
    background: rgba(15, 23, 42, 0.5);
    border: 1px solid rgba(6, 182, 212, 0.2);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
    cursor: pointer;
    transition: all 0.2s ease;
    font-size: 14px;
}

.copy-btn:hover {
    background: rgba(6, 182, 212, 0.15);
    border-color: rgba(6, 182, 212, 0.4);
    color: var(--accent-light);
}

.copy-btn i {
    font-size: 14px;
}

.copy-btn .fa-check {
    color: var(--success-color);
}

/* 用户消息的 Copy 按钮 - 在消息方块外面 */
.copy-btn-user {
    margin-top: 12px;
}

/* 输入区域 */
.input-area {
    padding: 0 80px 30px 80px;
    background: linear-gradient(to top, rgba(10, 15, 30, 0.8) 0%, transparent 100%);
}

/* 智能体选择器 */
.agent-selector {
    display: flex;
    gap: 12px;
    padding: 16px 0;
    flex-wrap: wrap;
}

.agent-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 12px 20px;
    background: rgba(30, 41, 59, 0.5);
    border-radius: 24px;
    cursor: pointer;
    transition: all 0.2s ease;
    border: 2px solid transparent;
}

.agent-item:hover {
    background: rgba(139, 92, 246, 0.15);
    transform: translateY(-1px);
}

.agent-item.active {
    background: rgba(139, 92, 246, 0.25);
    border-color: var(--primary-color);
    box-shadow: 0 0 20px rgba(139, 92, 246, 0.3);
}

.agent-icon {
    font-size: 20px;
    position: relative;
    z-index: 1;
}

.agent-name {
    font-size: 14px;
    font-weight: 600;
    position: relative;
    z-index: 1;
}

.check-icon {
    position: relative;
    z-index: 1;
    font-size: 12px;
    color: var(--primary-light);
}

/* 文件预览区域 */
.file-preview {
    padding: 14px 0;
}

.file-preview-item {
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 14px 18px;
    background: var(--bg-light);
    border-radius: 12px;
    border: 1px solid var(--border-color);
}

.file-icon-wrapper {
    width: 48px;
    height: 48px;
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.file-icon {
    font-size: 24px;
    color: white;
}

.file-info {
    flex: 1;
    min-width: 0;
}

.file-name {
    font-size: 14px;
    color: var(--text-primary);
    font-weight: 600;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    margin-bottom: 4px;
}

.file-size {
    font-size: 12px;
    color: var(--text-secondary);
}

.upload-parsing {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 13px;
    color: var(--primary-light);
    margin-top: 4px;
}

.upload-parsing i {
    font-size: 14px;
}

.file-actions {
    display: flex;
    align-items: center;
}

.upload-status {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 13px;
    color: var(--warning-color);
}

.upload-status i {
    font-size: 14px;
}

.remove-file {
    background: rgba(239, 68, 68, 0.1);
    border: none;
    color: #ef4444;
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 10px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.remove-file:hover {
    background: rgba(239, 68, 68, 0.2);
}

.remove-file i {
    font-size: 16px;
}

/* 输入容器 */
.input-container {
    display: flex;
    align-items: center;
    gap: 12px;
    background: rgba(15, 23, 42, 0.7);
    border-radius: 20px;
    padding: 14px 18px;
    border: 2px solid var(--border-color);
    transition: border-color 0.2s ease, box-shadow 0.2s ease, transform 0.2s ease;
    backdrop-filter: blur(10px);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
}

.input-container:focus-within {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(139, 92, 246, 0.15), 0 4px 20px rgba(0, 0, 0, 0.4);
    transform: translateY(-1px);
}

/* 文件按钮 */
.file-btn {
    flex-shrink: 0;
    width: 48px;
    height: 48px;
    border: none;
    border-radius: 12px;
    background: rgba(139, 92, 246, 0.15);
    color: var(--primary-light);
    cursor: pointer;
    transition: all 0.2s ease;
    font-size: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.file-btn:hover:not(.disabled) {
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    color: white;
    transform: scale(1.05);
}

.file-btn.disabled {
    opacity: 0.4;
    cursor: not-allowed;
}

/* 输入框 */
textarea {
    flex: 1;
    background: transparent;
    border: none;
    outline: none;
    color: var(--text-primary);
    font-size: 15px;
    resize: none;
    min-height: 20px;
    max-height: 200px;
    line-height: 24px;
    font-family: inherit;
}

textarea::placeholder {
    color: var(--text-secondary);
}

/* 发送按钮 */
.send-btn {
    flex-shrink: 0;
    width: 48px;
    height: 48px;
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    color: white;
    border: none;
    border-radius: 12px;
    cursor: pointer;
    transition: all 0.2s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 15px rgba(139, 92, 246, 0.4);
}

.send-btn:hover:not(.disabled) {
    transform: scale(1.05) translateY(-2px);
    box-shadow: 0 6px 20px rgba(139, 92, 246, 0.6);
}

.send-btn.disabled {
    opacity: 0.4;
    cursor: not-allowed;
    transform: none;
    box-shadow: none;
}

.send-btn i {
    font-size: 18px;
}

/* 停止按钮样式 */
.send-btn.stop {
    background: linear-gradient(135deg, #ef4444, #dc2626);
    box-shadow: 0 4px 15px rgba(239, 68, 68, 0.4);
}

.send-btn.stop:hover:not(.disabled) {
    box-shadow: 0 6px 20px rgba(239, 68, 68, 0.6);
}

/* 输入框中的文件图标 */
.input-file-icon {
    flex-shrink: 0;
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 18px;
}

.fa-shake {
    animation: shake 0.5s ease-in-out infinite;
}

@keyframes shake {
    0%, 100% {
        transform: translateX(0);
    }
    25% {
        transform: translateX(-2px);
    }
    75% {
        transform: translateX(2px);
    }
}

/* 连接错误提示 */
.connection-error {
    position: fixed;
    bottom: 30px;
    right: 30px;
    padding: 16px 24px;
    background: linear-gradient(135deg, #ef4444, #dc2626);
    color: white;
    border-radius: 12px;
    display: flex;
    align-items: center;
    gap: 14px;
    box-shadow: 0 8px 20px rgba(239, 68, 68, 0.3);
    z-index: 1000;
}

.connection-error i {
    font-size: 20px;
}

.retry-btn {
    padding: 10px 20px;
    background: rgba(255, 255, 255, 0.9);
    color: #ef4444;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    font-size: 13px;
    font-weight: 600;
    transition: all 0.2s ease;
}

.retry-btn:hover {
    background: #fecaca;
}

/* 响应式 */
@media (max-width: 1024px) {
    .messages-container,
    .input-area {
        padding-left: 40px;
        padding-right: 40px;
    }
}

@media (max-width: 768px) {
    .sidebar {
        width: 240px;
    }

    .messages-container,
    .input-area {
        padding: 20px 24px;
    }

    .agent-selector {
        gap: 10px;
    }

    .agent-item {
        padding: 10px 16px;
        font-size: 13px;
    }

    .empty-icon {
        font-size: 70px;
    }

    .empty-state h2 {
        font-size: 24px;
    }

    .reference-link {
        padding: 12px 14px;
        gap: 12px;
    }

    .ref-icon {
        width: 32px;
        height: 32px;
    }
}

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

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

::-webkit-scrollbar-thumb {
    background: rgba(139, 92, 246, 0.4);
    border-radius: 3px;
}

::-webkit-scrollbar-thumb:hover {
    background: rgba(139, 92, 246, 0.6);
}

/* 静态光晕效果 */
.glow-effect {
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
    pointer-events: none;
    z-index: -1;
    opacity: 0.3;
}

.glow-effect-1 {
    width: 300px;
    height: 300px;
    background: radial-gradient(circle, rgba(139, 92, 246, 0.2), transparent);
    top: -50px;
    left: -50px;
}

.glow-effect-2 {
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, rgba(6, 182, 212, 0.15), transparent);
    bottom: -100px;
    right: -100px;
}

/* 代码块样式 */
.markdown-body pre {
    background: rgba(10, 15, 30, 0.8);
    padding: 18px;
    border-radius: 12px;
    overflow-x: auto;
    margin: 18px 0;
    border: 1px solid var(--border-color);
}

/* 推理过程时间线 - 移动端适配 */
.timeline-section {
    margin-bottom: 20px;
    border-radius: 12px;
    overflow: hidden;
    border: 1px solid rgba(139, 92, 246, 0.3);
    background: rgba(139, 92, 246, 0.08);
}

/* 参考区域 */
.reference-section {
    margin-top: 24px;
    border-radius: 12px;
    overflow: hidden;
    border: 1px solid rgba(6, 182, 212, 0.25);
    background: rgba(6, 182, 212, 0.08);
}

/* 连接错误提示 */
.connection-error {
    position: fixed;
    bottom: 30px;
    right: 30px;
    padding: 16px 24px;
    background: linear-gradient(135deg, #ef4444, #dc2626);
    color: white;
    border-radius: 12px;
    display: flex;
    align-items: center;
    gap: 14px;
    box-shadow: 0 8px 20px rgba(239, 68, 68, 0.3);
    z-index: 1000;
}

/* 确认对话框 */
.confirm-dialog-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(8px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 2000;
}

.confirm-dialog {
    background: linear-gradient(135deg, #2a2a2a, #1f1f1f);
    border: 1px solid #3a3a3a;
    border-radius: 16px;
    padding: 32px;
    min-width: 400px;
    max-width: 500px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
    animation: dialogSlideIn 0.3s ease-out;
}

@keyframes dialogSlideIn {
    from {
        opacity: 0;
        transform: translateY(-20px) scale(0.95);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

.confirm-icon {
    text-align: center;
    margin-bottom: 20px;
}

.confirm-icon i {
    font-size: 56px;
    background: linear-gradient(135deg, #ef4444, #dc2626);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.confirm-dialog h3 {
    text-align: center;
    font-size: 20px;
    color: var(--text-primary);
    margin-bottom: 12px;
}

.confirm-dialog p {
    text-align: center;
    color: var(--text-secondary);
    font-size: 15px;
    line-height: 1.6;
    margin-bottom: 28px;
}

.confirm-buttons {
    display: flex;
    gap: 14px;
}

.confirm-btn {
    flex: 1;
    padding: 12px 24px;
    border: none;
    border-radius: 10px;
    font-size: 15px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
}

.confirm-btn.cancel {
    background: #3a3a3a;
    color: var(--text-primary);
    border: 1px solid #4a4a4a;
}

.confirm-btn.cancel:hover {
    background: #4a4a4a;
    transform: translateY(-2px);
}

.confirm-btn.danger {
    background: linear-gradient(135deg, #ef4444, #dc2626);
    color: white;
    box-shadow: 0 4px 15px rgba(239, 68, 68, 0.3);
}

.confirm-btn.danger:hover {
    box-shadow: 0 6px 20px rgba(239, 68, 68, 0.4);
    transform: translateY(-2px);
}

.confirm-btn.primary {
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    color: white;
    box-shadow: 0 4px 15px rgba(139, 92, 246, 0.3);
}

.confirm-btn.primary:hover:not(:disabled) {
    box-shadow: 0 6px 20px rgba(139, 92, 246, 0.5);
    transform: translateY(-2px);
}

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

/* 文献下载按钮（输入区左侧） */
.paper-btn {
    flex-shrink: 0;
    width: 48px;
    height: 48px;
    border: none;
    border-radius: 12px;
    background: rgba(139, 92, 246, 0.15);
    color: var(--primary-light);
    cursor: pointer;
    transition: all 0.2s ease;
    font-size: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.paper-btn:hover {
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    color: white;
    transform: scale(1.05);
}

/* 文献下载弹窗 */
.paper-download-dialog {
    width: 460px;
}

.paper-icon i {
    background: linear-gradient(135deg, #8b5cf6, #6366f1);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.paper-doi-input {
    width: 100%;
    padding: 12px 14px;
    background: rgba(15, 23, 42, 0.7);
    border: 2px solid var(--border-color);
    border-radius: 10px;
    color: var(--text-primary);
    font-size: 14px;
    outline: none;
    transition: border-color 0.2s ease, box-shadow 0.2s ease;
    margin-bottom: 16px;
    font-family: inherit;
}

.paper-doi-input:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(139, 92, 246, 0.15);
}

.paper-doi-input::placeholder {
    color: var(--text-secondary);
}

.paper-status {
    font-size: 13px;
    line-height: 1.6;
    padding: 10px 14px;
    border-radius: 8px;
    margin-bottom: 20px;
    word-break: break-all;
    white-space: pre-wrap;
}

.paper-status.loading {
    color: var(--primary-light);
    background: rgba(139, 92, 246, 0.1);
}

.paper-status.ok {
    color: #4ade80;
    background: rgba(74, 222, 128, 0.1);
}

.paper-status.err {
    color: #f87171;
    background: rgba(248, 113, 113, 0.1);
}

/* 管理员用户管理 */
.user-management-dialog {
    width: min(820px, calc(100vw - 32px));
    max-width: 820px;
    max-height: 86vh;
    overflow: hidden;
    text-align: left;
}

.admin-dialog-header {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 20px;
    margin-bottom: 20px;
}

.admin-dialog-header h3,
.admin-reset-dialog h3 {
    margin-bottom: 6px;
}

.admin-dialog-header p,
.admin-reset-dialog p {
    color: var(--text-secondary);
    font-size: 13px;
}

.admin-close-btn {
    border: none;
    background: transparent;
    color: var(--text-secondary);
    font-size: 18px;
    padding: 4px;
    cursor: pointer;
}

.admin-create-form {
    display: grid;
    grid-template-columns: 1fr 1fr 1.2fr auto;
    gap: 10px;
    padding: 14px;
    border: 1px solid var(--border-color);
    border-radius: 12px;
    background: rgba(15, 23, 42, 0.45);
}

.admin-create-form input {
    min-width: 0;
    padding: 10px 12px;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    background: rgba(15, 23, 42, 0.8);
    color: var(--text-primary);
    outline: none;
}

.admin-create-form input:focus {
    border-color: var(--primary-color);
}

.admin-primary-btn {
    padding: 10px 15px;
    border: none;
    border-radius: 8px;
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    color: white;
    cursor: pointer;
    white-space: nowrap;
}

.admin-primary-btn:disabled,
.admin-user-actions button:disabled {
    opacity: 0.45;
    cursor: not-allowed;
}

.admin-feedback {
    margin-top: 12px;
    padding: 9px 12px;
    border-radius: 8px;
    font-size: 13px;
}

.admin-feedback.success {
    color: #4ade80;
    background: rgba(74, 222, 128, 0.1);
}

.admin-feedback.error {
    color: #f87171;
    background: rgba(248, 113, 113, 0.1);
}

.admin-user-list {
    margin-top: 16px;
    max-height: 48vh;
    overflow-y: auto;
}

.admin-user-row {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 13px 4px;
    border-bottom: 1px solid rgba(148, 163, 184, 0.16);
}

.admin-user-main {
    flex: 1;
    min-width: 0;
}

.admin-user-name {
    font-weight: 600;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.admin-user-meta {
    margin-top: 4px;
    color: var(--text-secondary);
    font-size: 12px;
}

.admin-status {
    display: inline-block;
    margin-left: 8px;
    padding: 2px 7px;
    border-radius: 999px;
    font-size: 11px;
    font-weight: 500;
}

.admin-status.enabled {
    color: #4ade80;
    background: rgba(74, 222, 128, 0.12);
}

.admin-status.disabled {
    color: #f87171;
    background: rgba(248, 113, 113, 0.12);
}

.admin-user-actions {
    display: flex;
    gap: 8px;
}

.admin-user-actions button {
    padding: 7px 10px;
    border: 1px solid var(--border-color);
    border-radius: 7px;
    background: transparent;
    color: var(--primary-light);
    cursor: pointer;
}

.admin-user-actions button.danger {
    color: #f87171;
    border-color: rgba(248, 113, 113, 0.35);
}

.admin-user-actions button.enable {
    color: #4ade80;
    border-color: rgba(74, 222, 128, 0.35);
}

.admin-empty {
    padding: 30px;
    text-align: center;
    color: var(--text-secondary);
}

.admin-reset-overlay {
    z-index: 1100;
}

.admin-reset-dialog {
    width: min(430px, calc(100vw - 32px));
}

.model-management-dialog {
    width: min(620px, calc(100vw - 32px));
    max-width: 620px;
    text-align: left;
}

.model-endpoint-info,
.model-current-info {
    padding: 11px 13px;
    margin-bottom: 12px;
    border: 1px solid var(--border-color);
    border-radius: 9px;
    color: var(--text-secondary);
    background: rgba(15, 23, 42, 0.45);
    font-size: 13px;
}

.model-endpoint-info {
    display: flex;
    gap: 12px;
    align-items: center;
}

.model-endpoint-info code {
    min-width: 0;
    overflow: hidden;
    color: var(--primary-light);
    text-overflow: ellipsis;
    white-space: nowrap;
}

.model-current-info strong {
    color: var(--text-primary);
}

.model-select-label {
    display: block;
    margin: 18px 0 8px;
    color: var(--text-secondary);
    font-size: 13px;
}

.model-select-row {
    display: flex;
    gap: 10px;
}

.model-select-row select {
    flex: 1;
    min-width: 0;
    padding: 11px 12px;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    outline: none;
    background: rgba(15, 23, 42, 0.8);
    color: var(--text-primary);
}

.model-select-row select:focus {
    border-color: var(--primary-color);
}

.admin-secondary-btn {
    padding: 10px 14px;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    background: transparent;
    color: var(--primary-light);
    cursor: pointer;
}

.admin-secondary-btn:disabled {
    opacity: 0.45;
    cursor: not-allowed;
}

.model-switch-tip {
    margin-top: 16px;
    color: var(--text-secondary);
    font-size: 12px;
}

@media (max-width: 760px) {
    .admin-create-form {
        grid-template-columns: 1fr;
    }

    .admin-user-row {
        align-items: flex-start;
        flex-direction: column;
    }

    .admin-user-actions {
        width: 100%;
    }

    .admin-user-actions button {
        flex: 1;
    }
}