.chat-layout {
    display: grid;
    grid-template-columns: 280px 1fr;
    grid-template-rows: minmax(0, 1fr);
    height: calc(100vh - 80px);
    min-height: 0;
    border: 1px solid #ddd;
    overflow: hidden;
}

body.chat-page {
    height: 100vh;
    min-height: 100vh;
    margin-bottom: 0;
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

    body.chat-page > .container {
        flex: 1;
        display: flex;
        flex-direction: column;
        min-height: 0;
    }

    body.chat-page main[role="main"] {
        flex: 1;
        display: flex;
        flex-direction: column;
        min-height: 0;
    }

    body.chat-page .chat-layout {
        flex: 1;
        height: auto;
        min-height: 0;
        overflow: hidden;
    }

    body.chat-page .footer {
        display: none;
    }

.chat-sidebar {
    background: #f7f7f8;
    border-right: 1px solid #ddd;
    padding: 1rem;
    display: flex;
    flex-direction: column;
    min-height: 0;
    overflow: hidden;
}

.conversaciones {
    display: flex;
    flex: 1;
    min-height: 0;
    overflow-y: auto;
    overscroll-behavior: contain;
    flex-direction: column;
    gap: .5rem;
}

.conversacion-fila {
    display: flex;
    align-items: stretch;
    gap: .25rem;
}

.conversacion-item {
    flex: 1;
    min-width: 0;
    padding: .75rem;
    border: 0;
    border-radius: .5rem;
    background: transparent;
    color: #333;
    text-decoration: none;
    text-align: left;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

    .conversacion-item:hover,
    .conversacion-item.activa {
        background: #e7e7e9;
    }

.conversacion-borrar {
    width: 2rem;
    border: 0;
    border-radius: .5rem;
    background: transparent;
    color: #6b7280;
    font-weight: 700;
}

    .conversacion-borrar:hover {
        background: #fee2e2;
        color: #991b1b;
    }

.chat-wrapper {
    display: flex;
    flex-direction: column;
    min-width: 0;
    min-height: 0;
}

.chat-titulo {
    padding: 1rem;
    border-bottom: 1px solid #ddd;
    margin: 0;
}

.chat-mensajes {
    flex: 1;
    min-height: 0;
    overflow-y: auto;
    padding: 1rem;
}

.mensaje {
    max-width: 75%;
    margin-bottom: 1rem;
    padding: .75rem 1rem;
    border-radius: .75rem;
}

    .mensaje.user {
        margin-left: auto;
        background: #dbeafe;
    }

    .mensaje.assistant {
        margin-right: auto;
        background: #f1f5f9;
    }

    .mensaje.system {
        margin-inline: auto;
        background: #fff7ed;
    }

.mensaje-header {
    font-weight: 600;
    margin-bottom: .25rem;
}

.mensaje-body {
    white-space: pre-wrap;
}

.entrada-chat {
    display: flex;
    gap: .5rem;
    padding: 1rem;
    border-top: 1px solid #ddd;
}

.aprobacion-tool {
    border: 1px solid #f59e0b;
    background: #fffbeb;
    padding: 1rem;
    border-radius: .75rem;
    margin-bottom: 1rem;
}

.acciones-aprobacion {
    display: flex;
    gap: .5rem;
}