.chat-view {
    flex: 1;
    overflow-y: auto;
    padding: 16px;
    scroll-behavior: smooth;
    background: var(--bg-chat);
}

.message {
    max-width: 768px;
    margin: 0 auto 16px;
    display: flex;
    gap: 12px;
}

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

.avatar {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 14px;
    font-weight: 600;
    color: #ffffff;
}

.message.user .avatar {
    background: var(--accent);
}

.message.assistant .avatar {
    background: #8b5cf6;
}

.message.system .avatar {
    background: var(--warning);
}

.bubble {
    padding: 12px 16px;
    border-radius: var(--radius);
    max-width: 85%;
    word-wrap: break-word;
    overflow-wrap: break-word;
    line-height: 1.6;
    font-size: 15px;
}

.message.user .bubble {
    background: var(--bubble-user);
    border-bottom-right-radius: 4px;
}

.message.assistant .bubble {
    background: var(--bubble-ai);
    border-bottom-left-radius: 4px;
}

.message.system .bubble {
    background: #fef2f2;
    border-bottom-left-radius: 4px;
    color: var(--danger);
    font-size: 14px;
}

[data-theme="dark"] .message.system .bubble {
    background: #450a0a;
}

/* Tool card */
.tool-card {
    background: var(--bubble-tool);
    border-radius: var(--radius-sm);
    padding: 8px 12px;
    margin: 8px auto;
    max-width: 768px;
    cursor: pointer;
    border-left: 3px solid var(--warning);
    font-size: 14px;
}

.tool-card .tool-header {
    display: flex;
    align-items: center;
    gap: 6px;
    font-weight: 500;
}

.tool-card .tool-header .arrow {
    transition: transform 0.2s;
    font-size: 12px;
}

.tool-card.expanded .tool-header .arrow {
    transform: rotate(90deg);
}

.tool-card .tool-details {
    display: none;
    margin-top: 8px;
    padding-top: 8px;
    border-top: 1px solid var(--border);
    font-size: 13px;
    white-space: pre-wrap;
    word-break: break-all;
}

.tool-card.expanded .tool-details {
    display: block;
}

.tool-card .tool-result {
    margin-top: 6px;
    font-size: 13px;
    white-space: pre-wrap;
    word-break: break-all;
}

.tool-card .tool-result.error {
    color: var(--danger);
}

/* Streaming cursor */
.streaming-cursor {
    display: inline-block;
    width: 8px;
    height: 18px;
    background: var(--accent);
    margin-left: 2px;
    vertical-align: text-bottom;
    animation: blink 0.8s step-end infinite;
}

@keyframes blink {
    50% { opacity: 0; }
}

/* Thinking block */
.thinking-block {
    font-style: italic;
    border-left: 3px solid var(--accent);
    padding-left: 12px;
    color: var(--text-secondary);
    margin-bottom: 8px;
    font-size: 14px;
    line-height: 1.5;
}

.thinking-block summary {
    cursor: pointer;
    font-weight: 500;
    font-style: normal;
}