/* Chat area - Messages and input */

.chat-area {
    display: grid;
    grid-template-rows: 1fr auto;
    min-height: 0;
    position: relative;
    flex: 1 1 auto;
}

.chat-messages {
    padding: var(--space-sm);
    overflow-y: auto;
    min-height: 0;
    flex: 1;
}

/* Messages */
.message {
    margin-bottom: var(--space-md);
    padding: var(--space-sm);
    border-radius: 8px;
    border-left: 4px solid var(--border-color);
    background: var(--surface-variant);
}

.message.bot1 {
    border-left-color: var(--primary-color);
}

.message.bot2 {
    border-left-color: var(--success-color);
}

.message.human,
.message.user {
    border-left-color: var(--warning-color);
}

.message.system {
    border-left-color: var(--warning-color);
    font-style: italic;
}

.message.streaming {
    border-left-color: var(--warning-color);
    opacity: 0.8;
}

.message-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--space-xs);
}

.message-sender {
    font-weight: 600;
    font-size: var(--text-xs);
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    gap: var(--space-xs);
}

.typing-indicator {
    display: inline-block;
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--primary-color);
    animation: pulse 1.5s infinite;
}

.message-time {
    font-size: var(--text-xs);
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    gap: var(--space-xs);
}

.copy-btn {
    background: none;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    padding: var(--space-xs);
    border-radius: 4px;
    font-size: var(--text-xs);
    transition: all 0.2s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    min-width: 20px;
    min-height: 20px;
}

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

.copy-btn:active {
    transform: scale(0.9);
}

.message-content {
    font-size: var(--text-sm);
    line-height: 1.4;
    white-space: pre-wrap;
    word-wrap: break-word;
}

.message-content em {
    font-style: italic;
}

.message-content strong {
    font-weight: bold;
}

.message-content ul,
.message-content ol {
    margin: 0.35em 0 0.35em 1.25em;
    padding-left: 1.25em;
    list-style-position: outside;
}

.message-content li {
    margin: 0.15em 0;
}

.message-content blockquote {
    margin: var(--space-sm) 0;
    padding: var(--space-sm) var(--space-md);
    border-left: 4px solid var(--primary-color);
    background: var(--surface-variant);
    border-radius: 0 4px 4px 0;
    font-style: normal;
    opacity: 0.9;
}

/* Code blocks */
pre, code {
    font-family: 'IBM Plex Mono', 'JetBrains Mono', 'Fira Code', Consolas, Menlo, Monaco, monospace;
    background: var(--surface-variant);
    border-radius: 6px;
}

code {
    padding: 2px 4px;
    font-size: 90%;
}

pre {
    padding: 10px;
    overflow: auto;
    border: 1px solid var(--border-color);
}

pre code {
    background: transparent;
    padding: 0;
}

/* Scroll to latest button */
.scroll-to-latest {
    position: absolute;
    right: var(--space-sm);
    bottom: 76px;
    z-index: 95;
    padding: 8px 12px;
    border-radius: 999px;
    border: 1px solid var(--border-color);
    background: var(--surface-variant);
    color: var(--on-surface);
    font-size: var(--text-xs);
    cursor: pointer;
    box-shadow: 0 4px 10px rgba(0,0,0,0.12);
    display: inline-flex;
    align-items: center;
    gap: 6px;
    transition: all 0.2s ease;
}

.scroll-to-latest:hover {
    border-color: var(--primary-color);
    color: var(--primary-color);
}

/* Chat input area */
.chat-input-area {
    padding: var(--space-sm);
    padding-bottom: calc(var(--space-sm) + var(--safe-bottom));
    border-top: 1px solid var(--border-color);
    background: var(--surface-color);
    position: sticky;
    bottom: 0;
    z-index: 90;
}

.input-group {
    display: flex;
    gap: var(--space-sm);
    align-items: flex-end;
}

.chat-input {
    flex: 1;
    min-height: 48px;
    max-height: 210px;
    resize: none;
    font-size: var(--text-sm);
    padding: var(--space-sm);
    border: 1px solid var(--border-color);
    border-radius: 4px;
    background: var(--surface-color);
    color: var(--on-surface);
    font-family: inherit;
    line-height: 1.4;
}

.chat-input:focus {
    outline: none;
    border-color: var(--primary-color);
}

.send-btn {
    min-width: 48px;
    min-height: 48px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0;
}

.send-btn svg {
    width: 16px;
    height: 16px;
}