/* ============================
     JANELA DO CHATBOT
============================ */
.chat-container {
    width: 100%;
    height: 80vh;
    max-height: 80vh;
    min-height: 320px;
    background: #ffffff;
    display: flex;
    flex-direction: column;
    border-radius: 12px;
    overflow: hidden;
    font-family: "Poppins", sans-serif;
}

/* Cabeçalho do chatbot */
.chat-header {
    background: #0b2239;
    color: white;
    padding: 16px;
    font-size: 18px;
    font-weight: 700;
    display: flex;
    align-items: center;
    gap: 10px;
    justify-content: space-between;
    border-bottom: 3px solid #2e87c6;
}

.chat-header .kb-selector {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 13px;
    margin-left: auto;
}

.chat-header .kb-selector label {
    color: rgba(255,255,255,0.8);
    font-weight: 600;
}

.chat-header .kb-selector select {
    padding: 6px 10px;
    border-radius: 4px;
    border: 1px solid #2e87c6;
    background: #1a3f52;
    color: white;
    cursor: pointer;
    font-size: 12px;
    font-weight: 500;
}

.chat-header .kb-selector select:hover {
    background: #2a5a72;
}

.chat-header .kb-selector select option {
    background: #0b2239;
    color: white;
}

.chat-header img {
    width: 26px;
    height: 26px;
}

/* Área das mensagens */
.chat-messages {
    flex: 1;
    padding: 16px;
    padding-bottom: 12px;
    overflow-y: auto;
    background: #f4f7fb;
    scroll-behavior: smooth;
    scrollbar-gutter: stable;
}

/* Balões de conversa */
.message {
    max-width: 80%;
    padding: 12px 16px;
    margin-bottom: 12px;
    border-radius: 16px;
    line-height: 1.4;
    font-size: 14px;
}

/* Mensagem do utilizador */
.message.user {
    background: #2e87c6;
    color: white;
    margin-left: auto;
    border-bottom-right-radius: 4px;
}

/* Mensagem do assistente */
.message.assistant {
    background: #e6ecf2;
    color: #0b2239;
    border-bottom-left-radius: 4px;
}

/* Área do input */
.chat-input-area {
    display: flex;
    padding: 12px;
    background: #ffffff;
    border-top: 1px solid #ddd;
    gap: 8px;
}

/* Campo de escrita */
.chat-input-area input[type="text"] {
    flex: 1;
    padding: 12px 14px;
    border-radius: 12px;
    border: 1px solid #cbd5e1;
    font-size: 14px;
    outline: none;
}

.chat-input-area input[type="text"]:focus {
    border-color: #2e87c6;
    box-shadow: 0 0 0 3px rgba(46, 135, 198, 0.2);
}

/* Botão enviar */
.chat-input-area button {
    background: #2e87c6;
    border: none;
    color: white;
    padding: 0 18px;
    border-radius: 12px;
    cursor: pointer;
    font-weight: 700;
    transition: 0.15s;
}

.chat-input-area button:hover {
    background: #276fa3;
}

/* Scroll suave */
.chat-messages::-webkit-scrollbar {
    width: 8px;
}

.chat-messages::-webkit-scrollbar-thumb {
    background: #d0d6dd;
    border-radius: 10px;
}