/* =====================================================
   CONTENEDOR GENERAL
===================================================== */
#iafa-chat {
    display: flex;
    width: 100%;
    max-width: 1200px;
    margin: 40px auto;
    background: #0f1115;
    border-radius: 14px;
    overflow: hidden;
    border: 1px solid #1f232b;
}

/* =====================================================
   SIDEBAR IZQUIERDA
===================================================== */
.iafa-sidebar {
    width: 260px;
    background: #151821;
    padding: 16px;
    display: flex;
    flex-direction: column;
}

/* LISTADO DE CHATS (FIX CLAVE) */
#iafa-chat-list {
    list-style: none;
    padding: 0;
    margin: 0;
    flex: 1;                 /* 👈 CLAVE */
    overflow-y: auto;
}

/* Item de chat */
#iafa-chat-list li {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 8px;
    background: #1b1f2b;
    color: #cfd3dc;
    padding: 10px 12px;
    border-radius: 8px;
    margin-bottom: 8px;
    font-size: 14px;
    cursor: pointer;
}

/* Activo */
#iafa-chat-list li.active {
    background: #2563eb;
    color: #ffffff;
}

/* Título */
.iafa-chat-title {
    flex: 1;
    overflow: hidden;
    white-space: nowrap;
    text-overflow: ellipsis;
}

/* Botón borrar */
.iafa-delete-chat {
    background: none;
    border: none;
    color: #8b93a7;
    font-size: 16px;
    cursor: pointer;
}

.iafa-delete-chat:hover {
    color: #ff5c5c;
}

/* BOTÓN NUEVO CHAT (FIX MÓVIL) */
#iafa-new-chat {
    margin-bottom: 12px;
    position: relative;
    z-index: 10;
    flex-shrink: 0;
}

/* =====================================================
   ZONA PRINCIPAL
===================================================== */
.iafa-main {
    flex: 1;
    display: flex;
    flex-direction: column;
    background: #0f1115;
}

/* =====================================================
   CABECERA
===================================================== */
.iafa-header {
    padding: 16px 20px;
    background: #141824;
    border-bottom: 1px solid #1f232b;
    color: #ffffff;
    font-weight: 600;
}

/* =====================================================
   MENSAJES
===================================================== */
#iafa-messages {
    flex: 1;
    min-height: 420px;
    padding: 24px;
    overflow-y: auto;
}

/* Mensajes */
.iafa-msg {
    max-width: 75%;
    margin-bottom: 16px;
    padding: 14px 18px;
    border-radius: 14px;
    line-height: 1.6;
    font-size: 15px;
    word-wrap: break-word;
    white-space: normal;     /* 👈 FIX ALMOHADILLAS */
}

/* Usuario */
.iafa-msg.iafa-user {
    background: #2a7cff;
    color: #ffffff;
    margin-left: auto;
}

/* IA */
.iafa-msg.iafa-ai {
    background: #1b1f2b;
    color: #e6e8ee;
    margin-right: auto;
}

/* Títulos IA */
.iafa-msg h2 {
    font-size: 17px;
    margin: 18px 0 8px;
    color: #ffffff;
    border-left: 4px solid #2563eb;
    padding-left: 10px;
}

/* =====================================================
   FORMULARIO
===================================================== */
#iafa-form {
    display: flex;
    gap: 12px;
    padding: 16px;
    background: #141824;
    border-top: 1px solid #1f232b;
}

/* TEXTAREA */
#iafa-input {
    flex: 1;
    min-height: 110px;
    resize: vertical;
    background: #0b0d12;
    color: #e6e8ee;
    border: 1px solid #2a2f3a;
    border-radius: 12px;
    padding: 14px;
    font-size: 15px;
}

#iafa-input::placeholder {
    color: #7e8699;
}

/* BOTÓN */
#iafa-form button {
    background: #2a7cff;
    color: #fff;
    border: none;
    padding: 0 22px;
    border-radius: 12px;
    font-weight: 600;
    cursor: pointer;
}

#iafa-form button:hover {
    background: #1f66d1;
}

/* =====================================================
   RESPONSIVE
===================================================== */
@media (max-width: 768px) {

    #iafa-chat {
        flex-direction: column;
    }

    .iafa-sidebar {
        width: 100%;
        max-height: 45vh;
    }

    .iafa-msg {
        max-width: 90%;
    }
}