/*
 * Message thread — document-like assistant blocks, compact user pills.
 */

.message {
    display: flex;
    gap: var(--space-sm);
    margin: 0 0 var(--space-md);
    max-width: 100%;
    padding: 0;
}

.message-avatar {
    width: 36px;
    height: 36px;
    border-radius: var(--radius-full);
    background: var(--color-surface);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    font-size: var(--font-size-sm);
    flex-shrink: 0;
    color: var(--color-text-muted);
}

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

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

.message.assistant .message-avatar {
    background: var(--color-accent-soft);
    color: var(--color-accent);
}

.message-content {
    max-width: 80%;
    padding: 0.7rem 0.95rem;
    border-radius: var(--radius-lg);
    font-size: var(--font-size-base);
    line-height: 1.55;
    word-wrap: break-word;
    background: var(--color-surface);
    color: var(--color-text);
    border: 1px solid var(--color-border);
}

.message.user .message-content {
    background: var(--color-accent);
    color: var(--chat-text);
    border-color: transparent;
    border-bottom-right-radius: var(--radius-sm);
}

.message.assistant .message-content {
    border-bottom-left-radius: var(--radius-sm);
}

.message-content p {
    margin: 0 0 0.5rem;
}

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

.message-content strong {
    font-weight: 600;
}

.message-content em {
    font-style: italic;
    color: var(--color-text-muted);
}

.message.user .message-content em {
    color: var(--chat-text-secondary);
}

/* Empty state */
.empty-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: var(--space-6) var(--space-4);
    max-width: 520px;
    margin: 0 auto;
}

.empty-state-lead {
    margin: 0 0 var(--space-5);
    color: var(--chat-text);
    font-size: clamp(1.25rem, 3vw, 1.5rem);
    font-weight: 600;
    line-height: 1.3;
    letter-spacing: -0.02em;
}

/* Live renderer: .msg / .msg-bubble */
.msg {
    display: flex;
    width: 100%;
    margin: 0 0 var(--space-5);
    padding: 0;
    gap: var(--space-3);
    align-items: flex-start;
}

.msg-avatar {
    flex: 0 0 auto;
    width: 36px;
    height: 36px;
    border-radius: var(--radius-full);
    border: 1px solid var(--accent-border);
    object-fit: cover;
    margin-top: 2px;
}

.msg-user {
    justify-content: flex-end;
}

.msg-user .msg-avatar { display: none; }

.msg-assistant {
    justify-content: flex-start;
}

.msg-bubble {
    padding: 0.75rem 1rem;
    border-radius: var(--radius-lg);
    line-height: 1.6;
    overflow-wrap: anywhere;
}

.msg-bubble-user {
    max-width: min(85%, 420px);
    background: var(--color-accent);
    color: var(--bg-primary);
    border: none;
    border-bottom-right-radius: var(--radius-sm);
}

.msg-bubble-assistant {
    width: 100%;
    max-width: 100%;
    background: transparent;
    color: var(--color-text);
    border: none;
    padding: 0.25rem 0;
}

.msg-bubble-rich p {
    margin: 0 0 0.6rem;
}

.msg-bubble-rich p:last-child {
    margin-bottom: 0;
}

.msg-bubble-rich ul,
.msg-bubble-rich ol {
    margin: 0.35rem 0 0.75rem;
    padding-left: 1.25rem;
}

.msg-bubble-rich li {
    margin-bottom: 0.3rem;
}

.msg-bubble-rich strong {
    font-weight: 600;
}

.msg-bubble-rich em {
    font-style: italic;
    color: var(--color-text-muted);
}

.msg-section-title {
    margin: 0 0 0.5rem;
    font-size: var(--font-size-base);
    font-weight: 700;
    color: var(--color-accent);
}

.msg-list {
    margin: 0.35rem 0 0.75rem;
    padding-left: 1.25rem;
}

.msg-list-ordered {
    padding-left: 1.4rem;
}

.msg-table-wrap {
    overflow-x: auto;
    margin: 0.5rem 0 0.75rem;
    -webkit-overflow-scrolling: touch;
}

.msg-table {
    width: 100%;
    border-collapse: collapse;
    font-size: var(--font-size-sm);
    line-height: 1.45;
}

.msg-table th,
.msg-table td {
    padding: 0.45rem 0.6rem;
    border: 1px solid var(--color-border);
    text-align: left;
    vertical-align: top;
}

.msg-table th {
    background: var(--color-accent-soft);
    color: var(--color-accent);
    font-weight: 700;
}

.msg-table tr:nth-child(even) td {
    background: var(--color-surface-hover);
}

.msg-bubble-typing {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    min-height: 2rem;
    padding: 0.5rem 0;
    background: transparent;
    border: none;
}

.typing-dot {
    width: 7px;
    height: 7px;
    border-radius: var(--radius-full);
    background: var(--color-text-muted);
    animation: typing-pulse 1.2s ease-in-out infinite;
}

.typing-dot:nth-child(2) { animation-delay: 0.15s; }
.typing-dot:nth-child(3) { animation-delay: 0.3s; }

@keyframes typing-pulse {
    0%, 80%, 100% { opacity: 0.35; transform: scale(0.85); }
    40% { opacity: 1; transform: scale(1); }
}

@media (prefers-reduced-motion: reduce) {
    .typing-dot { animation: none; opacity: 0.7; }
}

@media (max-width: 640px) {
    .msg {
        margin-bottom: var(--space-4);
    }

    .msg-bubble-user {
        max-width: 92%;
    }

    .msg-table {
        font-size: var(--font-size-xs);
    }

    .empty-state {
        padding: var(--space-4) var(--space-2);
    }
}