.chat-page main.chat-main {
    padding: 0;
}

.chat-topbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    padding: 1rem 1.25rem;
    background: var(--light-color);
    border-bottom: 1px solid rgba(45, 52, 54, 0.08);
}

.chat-back-link,
.chat-retention-pill {
    display: inline-flex;
    align-items: center;
    gap: 0.45rem;
    color: var(--dark-color);
    text-decoration: none;
    font-size: 0.92rem;
    font-weight: 600;
}

.chat-retention-pill {
    color: var(--primary-color);
}

.chat-grid {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    gap: 1.25rem;
    padding: 1.5rem;
}

.chat-help {
    grid-column: 1 / -1;
    padding: 0.25rem 0.25rem 0;
}

.chat-help h3 {
    margin: 0 0 0.75rem;
    color: var(--dark-color);
    font-size: 1rem;
}

.chat-help-items {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 0.75rem;
}

.chat-help-items div {
    display: flex;
    align-items: flex-start;
    gap: 0.55rem;
    min-height: 56px;
    padding: 0.85rem 0.9rem;
    border: 1px solid rgba(108, 92, 231, 0.12);
    border-radius: 8px;
    background: rgba(108, 92, 231, 0.035);
    color: #687176;
    font-size: 0.88rem;
    line-height: 1.45;
}

.chat-help-items i {
    flex: 0 0 auto;
    margin-top: 0.15rem;
    color: var(--primary-color);
}

.chat-card,
.chat-room {
    background: #fff;
    border: 1px solid rgba(108, 92, 231, 0.12);
    border-radius: 8px;
    padding: 1.25rem;
    box-shadow: 0 8px 24px rgba(45, 52, 54, 0.06);
}

.chat-card-header,
.chat-room-header {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 1rem;
    margin-bottom: 1.2rem;
}

.chat-card-header {
    justify-content: flex-start;
}

.chat-card-header > i,
.chat-room-header h2 i {
    color: var(--primary-color);
}

.chat-card h2,
.chat-room h2 {
    margin: 0;
    color: var(--dark-color);
    font-size: 1.3rem;
}

.chat-card p,
.chat-room p {
    margin: 0.25rem 0 0;
    color: #687176;
    font-size: 0.92rem;
}

.chat-countdown {
    max-width: 360px;
    margin-top: 0.65rem;
}

.chat-countdown-label,
.chat-upload-progress-top {
    display: flex;
    justify-content: space-between;
    gap: 0.75rem;
    margin-bottom: 0.35rem;
    color: var(--dark-color);
    font-size: 0.82rem;
    font-weight: 700;
}

.chat-countdown-track,
.chat-upload-track {
    width: 100%;
    height: 8px;
    overflow: hidden;
    border-radius: 999px;
    background: rgba(108, 92, 231, 0.14);
}

.chat-countdown-bar,
.chat-upload-bar {
    width: 0%;
    height: 100%;
    border-radius: inherit;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
    transition: width 0.25s ease;
}

.chat-countdown-bar.is-ending {
    background: linear-gradient(90deg, #fdcb6e, var(--danger-color));
}

.chat-inline-control {
    display: grid;
    grid-template-columns: 1fr auto;
    gap: 0.6rem;
}

.chat-share-box {
    margin-top: 1.25rem;
    padding-top: 1.25rem;
    border-top: 1px dashed rgba(108, 92, 231, 0.28);
}

.chat-share-box h3 {
    margin-bottom: 0.75rem;
    color: var(--success-color);
}

.chat-room-share {
    display: grid;
    grid-template-columns: minmax(0, 1.35fr) minmax(220px, 0.65fr);
    gap: 0.9rem;
    margin-bottom: 1rem;
    padding: 0.9rem;
    background: rgba(108, 92, 231, 0.06);
    border: 1px solid rgba(108, 92, 231, 0.14);
    border-radius: 8px;
}

.chat-room-share.hidden {
    display: none;
}

.active-share-field label {
    display: block;
    margin-bottom: 0.35rem;
    color: #687176;
    font-size: 0.82rem;
    font-weight: 700;
}

.chat-room {
    margin: 1.5rem;
}

.chat-messages {
    min-height: 360px;
    max-height: 56vh;
    overflow-y: auto;
    border: 1px solid rgba(108, 92, 231, 0.14);
    border-radius: 8px;
    background: linear-gradient(180deg, rgba(108, 92, 231, 0.04), rgba(0, 206, 201, 0.035));
    padding: 1rem;
}

.chat-empty {
    min-height: 310px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #879096;
    text-align: center;
}

.chat-message {
    background: #fff;
    border: 1px solid rgba(108, 92, 231, 0.14);
    border-radius: 8px;
    padding: 0.85rem 0.95rem;
    margin-bottom: 0.75rem;
    box-shadow: 0 4px 12px rgba(45, 52, 54, 0.05);
}

.chat-message-meta {
    display: flex;
    justify-content: space-between;
    gap: 0.75rem;
    margin-bottom: 0.35rem;
    color: #879096;
    font-size: 0.78rem;
}

.chat-message-name {
    color: var(--primary-color);
    font-weight: 700;
}

.chat-message-text {
    white-space: pre-wrap;
    overflow-wrap: anywhere;
    color: var(--dark-color);
}

.chat-file-card {
    margin-top: 0.55rem;
    padding: 0.75rem;
    border-radius: 8px;
    border: 1px dashed rgba(108, 92, 231, 0.32);
    background: rgba(108, 92, 231, 0.06);
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 0.75rem;
}

.chat-file-name {
    font-weight: 700;
    color: var(--dark-color);
    overflow: hidden;
    white-space: nowrap;
    text-overflow: ellipsis;
    max-width: 420px;
}

.chat-file-size {
    color: #879096;
    font-size: 0.8rem;
}

.chat-composer {
    display: grid;
    grid-template-columns: minmax(110px, 160px) auto minmax(0, 1fr) auto;
    gap: 0.6rem;
    align-items: end;
    margin-top: 1rem;
}

.chat-composer textarea {
    min-height: 45px;
    max-height: 130px;
}

.chat-file-button {
    min-width: 44px;
    height: 45px;
    padding: 0;
}

.chat-upload-progress {
    margin-top: 1rem;
    padding: 0.8rem 0.9rem;
    border: 1px solid rgba(108, 92, 231, 0.16);
    border-radius: 8px;
    background: rgba(108, 92, 231, 0.06);
}

.chat-status {
    min-height: 1.5rem;
    padding: 0 1.5rem 1.25rem;
    color: var(--primary-color);
    font-weight: 600;
}

.danger-outline {
    color: var(--danger-color);
    border-color: var(--danger-color);
}

.danger-outline:hover {
    background-color: var(--danger-color);
    color: #fff;
}

.hidden {
    display: none !important;
}

@media (max-width: 800px) {
    .chat-grid {
        grid-template-columns: 1fr;
        padding: 1rem;
    }

    .chat-help-items {
        grid-template-columns: 1fr;
    }

    .chat-room-share {
        grid-template-columns: 1fr;
    }

    .chat-room {
        margin: 1rem;
        padding: 1rem;
    }

    .chat-room-header,
    .chat-topbar {
        flex-direction: column;
        align-items: stretch;
    }

    .chat-composer {
        grid-template-columns: 1fr auto;
    }

    .chat-composer #displayName,
    .chat-composer textarea {
        grid-column: 1 / -1;
    }

    .chat-file-card {
        align-items: flex-start;
        flex-direction: column;
    }

    .chat-file-name {
        max-width: 100%;
    }
}