/* --------------------------------------------------
   채팅 / 알림
   -------------------------------------------------- */

.chat-container {
    display: flex;
    flex-direction: column;
    gap: 8px;
    padding: 12px;
    background: var(--surface);
    border: 1px solid var(--line);
    border-radius: var(--radius-lg);
}

.chat-box {
    display: flex;
    flex-direction: column;
    gap: 6px;
    height: 180px;
    overflow-y: auto;
    overscroll-behavior: contain;
    padding-right: 2px;
}

.chat-message {
    max-width: 85%;
    padding: 6px 10px;
    border-radius: 12px;
    font-size: 14px;
    word-break: break-word;
    background: var(--surface-2);
}

.chat-message.self {
    align-self: flex-end;
    background: var(--accent);
    color: #fff;
}

.chat-message.other {
    align-self: flex-start;
}

.chat-message .sender {
    font-weight: 700;
    color: var(--muted);
    margin-right: 2px;
}

/* 시스템 알림 (낸 카드, 입장 등): 작고 가운데 */
.chat-message.system {
    align-self: center;
    max-width: 100%;
    background: transparent;
    padding: 2px 6px;
    font-size: 12px;
    color: var(--muted);
    text-align: center;
}

.chat-message.system strong {
    color: var(--text);
}

.chat-input {
    min-height: 40px;
}

@media (min-width: 900px) {
    .chat-container {
        position: sticky;
        top: 70px;
    }

    .chat-box {
        height: min(60vh, 520px);
    }
}