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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background: linear-gradient(135deg, #1a1a2e 0%, #16213e 100%);
    color: #e0e0e0;
    min-height: 100vh;
}

.container {
    max-width: 1800px;
    margin: 0 auto;
    padding: 20px;
}

header {
    text-align: center;
    margin-bottom: 30px;
    padding-bottom: 20px;
    border-bottom: 1px solid rgba(255,255,255,0.1);
}

header h1 {
    font-size: 2.5rem;
    background: linear-gradient(90deg, #00d4ff, #7b2cbf);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

header .subtitle {
    color: #888;
    margin-top: 8px;
}

main {
    display: grid;
    grid-template-columns: 250px 350px 1fr;
    gap: 20px;
    height: calc(100vh - 150px);
}

/* 面板通用样式 */
.agents-panel, .sessions-panel, .messages-panel {
    background: rgba(255,255,255,0.05);
    border-radius: 12px;
    padding: 20px;
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

.agents-panel h2, .sessions-panel h2, .messages-panel h2 {
    font-size: 1.1rem;
    margin-bottom: 15px;
    padding-bottom: 10px;
    border-bottom: 1px solid rgba(255,255,255,0.1);
}

.agents-panel h2 span, .sessions-panel h2 span, .messages-panel h2 span {
    font-size: 0.85rem;
    color: #888;
    margin-left: 10px;
}

/* 智能体列表 */
.agents-list, .sessions-list, .messages-list {
    flex: 1;
    overflow-y: auto;
}

.agent-item, .session-item {
    padding: 12px 15px;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.2s ease;
    margin-bottom: 8px;
    background: rgba(255,255,255,0.03);
    border: 1px solid transparent;
}

.agent-item:hover, .session-item:hover {
    background: rgba(255,255,255,0.08);
    border-color: rgba(0,212,255,0.3);
}

.agent-item.active, .session-item.active {
    background: rgba(0,212,255,0.15);
    border-color: rgba(0,212,255,0.5);
}

.agent-item .name {
    font-weight: 600;
    color: #fff;
    margin-bottom: 5px;
}

.agent-item .meta, .session-item .meta {
    font-size: 0.8rem;
    color: #888;
    display: flex;
    gap: 10px;
}

.session-item .channel {
    display: inline-block;
    padding: 2px 8px;
    border-radius: 4px;
    font-size: 0.75rem;
    margin-bottom: 5px;
}

.session-item .channel.matrix { background: #0dbd8b; color: #fff; }
.session-item .channel.discord { background: #5865F2; color: #fff; }
.session-item .channel.telegram { background: #0088cc; color: #fff; }
.session-item .channel.cli { background: #4a4a4a; color: #fff; }
.session-item .channel.main { background: #7b2cbf; color: #fff; }

.session-item .model {
    color: #00d4ff;
}

.session-item .target {
    font-size: 0.75rem;
    color: #aaa;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

/* 消息列表 */
.message-item {
    padding: 15px;
    border-radius: 8px;
    margin-bottom: 12px;
    background: rgba(255,255,255,0.03);
    border-left: 3px solid #666;
}

.message-item.user {
    border-left-color: #00d4ff;
}

.message-item.assistant {
    border-left-color: #7b2cbf;
}

.message-item .header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 10px;
}

.message-item .role {
    font-weight: 600;
    text-transform: uppercase;
    font-size: 0.8rem;
}

.message-item .role.user { color: #00d4ff; }
.message-item .role.assistant { color: #7b2cbf; }

.message-item .time {
    font-size: 0.75rem;
    color: #666;
}

.message-item .content {
    font-size: 0.9rem;
    line-height: 1.5;
    color: #ccc;
    white-space: pre-wrap;
    word-break: break-word;
}

.message-item .content.truncated {
    max-height: 200px;
    overflow: hidden;
    position: relative;
}

.message-item .content.truncated::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 50px;
    background: linear-gradient(transparent, rgba(26,26,46,0.9));
}

.message-item .expand-btn {
    margin-top: 10px;
    padding: 5px 15px;
    font-size: 0.8rem;
    background: rgba(0,212,255,0.2);
    border: none;
    border-radius: 4px;
    color: #00d4ff;
    cursor: pointer;
    transition: background 0.2s;
}

.message-item .expand-btn:hover {
    background: rgba(0,212,255,0.3);
}

/* 加载和占位 */
.loading, .placeholder {
    text-align: center;
    padding: 40px 20px;
    color: #666;
}

.loading::after {
    content: '';
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 2px solid #333;
    border-top-color: #00d4ff;
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin-left: 10px;
    vertical-align: middle;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* 模态框 */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0,0,0,0.8);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
}

.modal.hidden {
    display: none;
}

.modal-content {
    background: #1a1a2e;
    border-radius: 12px;
    width: 90%;
    max-width: 900px;
    max-height: 80vh;
    display: flex;
    flex-direction: column;
    border: 1px solid rgba(255,255,255,0.1);
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px;
    border-bottom: 1px solid rgba(255,255,255,0.1);
}

.modal-header h3 {
    color: #fff;
}

.close-btn {
    background: none;
    border: none;
    color: #888;
    font-size: 1.5rem;
    cursor: pointer;
    transition: color 0.2s;
}

.close-btn:hover {
    color: #fff;
}

.modal-body {
    padding: 20px;
    overflow-y: auto;
    flex: 1;
}

.modal-body pre {
    white-space: pre-wrap;
    word-break: break-word;
    font-family: 'Fira Code', 'Consolas', monospace;
    font-size: 0.9rem;
    line-height: 1.6;
    color: #ccc;
}

/* 状态标签 */
.status {
    display: inline-block;
    padding: 2px 8px;
    border-radius: 4px;
    font-size: 0.7rem;
    text-transform: uppercase;
}

.status.done { background: #2e7d32; color: #fff; }
.status.running { background: #ed6c02; color: #fff; }
.status.error { background: #c62828; color: #fff; }

/* Token 统计 */
.tokens {
    font-size: 0.75rem;
    color: #666;
    margin-top: 5px;
}

/* 滚动条样式 */
.agents-list::-webkit-scrollbar,
.sessions-list::-webkit-scrollbar,
.messages-list::-webkit-scrollbar,
.modal-body::-webkit-scrollbar {
    width: 6px;
}

.agents-list::-webkit-scrollbar-track,
.sessions-list::-webkit-scrollbar-track,
.messages-list::-webkit-scrollbar-track,
.modal-body::-webkit-scrollbar-track {
    background: transparent;
}

.agents-list::-webkit-scrollbar-thumb,
.sessions-list::-webkit-scrollbar-thumb,
.messages-list::-webkit-scrollbar-thumb,
.modal-body::-webkit-scrollbar-thumb {
    background: rgba(255,255,255,0.2);
    border-radius: 3px;
}

.agents-list::-webkit-scrollbar-thumb:hover,
.sessions-list::-webkit-scrollbar-thumb:hover,
.messages-list::-webkit-scrollbar-thumb:hover,
.modal-body::-webkit-scrollbar-thumb:hover {
    background: rgba(255,255,255,0.3);
}

/* 响应式 */
@media (max-width: 1200px) {
    main {
        grid-template-columns: 200px 300px 1fr;
    }
}

@media (max-width: 900px) {
    main {
        grid-template-columns: 1fr;
        grid-template-rows: auto auto 1fr;
    }
    
    .agents-panel, .sessions-panel {
        max-height: 300px;
    }
}