/* --- Botão de voltar para o chat na base de conhecimento --- */
.kb-back-btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    background: var(--cor-destaque);
    color: var(--cor-primaria);
    border: none;
    border-radius: 8px;
    padding: 7px 18px;
    font-size: 1.08em;
    font-weight: 600;
    margin-bottom: 10px;
    margin-right: auto;
    box-shadow: 0 2px 8px var(--cor-sombra);
    cursor: pointer;
    transition: background 0.18s, color 0.18s;
}
.kb-back-btn:hover, .kb-back-btn:focus {
    background: var(--cor-primaria);
    color: #fff;
}
.kb-back-btn .material-symbols-outlined {
    font-size: 1.3em;
    vertical-align: middle;
    color: inherit;
}
.dark-theme .kb-back-btn {
    background: var(--cor-destaque);
    color: var(--cor-primaria);
}
.dark-theme .kb-back-btn:hover, .dark-theme .kb-back-btn:focus {
    background: var(--cor-primaria);
    color: #fff;
}
/* --- Estilo especial para a Base de Conhecimento (AEMI) --- */
.kb-section {
    background: var(--cor-superficie);
    border-radius: 18px;
    box-shadow: 0 4px 18px var(--cor-sombra);
    margin: 28px auto 0 auto;
    max-width: 650px;
    padding: 32px 28px 24px 28px;
    display: flex;
    flex-direction: column;
    gap: 18px;
    border: 2px solid var(--cor-borda);
    position: relative;
}
.kb-section h3 {
    font-family: 'Oswald', sans-serif;
    font-size: 1.45rem;
    color: var(--cor-primaria);
    margin-bottom: 8px;
    letter-spacing: 0.01em;
    display: flex;
    align-items: center;
    gap: 8px;
}
.kb-section h3:before {
    content: '\e0ef';
    font-family: 'Material Symbols Outlined';
    font-size: 1.5em;
    color: var(--cor-destaque);
    margin-right: 4px;
    vertical-align: middle;
    font-variation-settings: 'FILL' 1, 'wght' 700;
}
.kb-upload-form {
    background: #f8fafc;
    border-radius: 10px;
    padding: 16px 14px 10px 14px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.04);
    border: 1px solid var(--cor-borda);
    display: flex;
    flex-direction: column;
    gap: 10px;
}
.dark-theme .kb-section {
    background: #232a36;
    color: var(--cor-texto);
    border: 2px solid var(--cor-borda);
    box-shadow: 0 4px 18px var(--cor-sombra);
}
.dark-theme .kb-upload-form {
    background: #232a36;
    border: 1px solid var(--cor-borda);
    box-shadow: 0 2px 8px rgba(0,0,0,0.10);
}
.kb-upload-form label {
    font-weight: 600;
    color: var(--cor-primaria);
    font-size: 1em;
    margin-bottom: 2px;
}
.dark-theme .kb-upload-form label {
    color: var(--cor-destaque);
}
.kb-upload-form input[type="file"],
.kb-upload-form textarea {
    background: #fff;
    border: 1px solid var(--cor-borda);
    border-radius: 6px;
    font-size: 1em;
    padding: 8px 10px;
    color: var(--cor-texto);
    font-family: inherit;
}
.dark-theme .kb-upload-form input[type="file"],
.dark-theme .kb-upload-form textarea {
    background: #232a36;
    color: var(--cor-texto);
    border: 1px solid var(--cor-borda);
}
.kb-upload-form button {
    align-self: flex-end;
    background: var(--cor-destaque);
    color: var(--cor-primaria);
    border: none;
    border-radius: 6px;
    padding: 8px 22px;
    font-weight: 700;
    font-size: 1em;
    cursor: pointer;
    transition: background 0.2s, color 0.2s;
    margin-top: 6px;
    box-shadow: 0 2px 8px var(--cor-sombra);
}
.kb-upload-form button:hover {
    background: var(--cor-primaria);
    color: #fff;
}
.kb-search {
    width: 100%;
    border-radius: 6px;
    border: 1px solid var(--cor-borda);
    padding: 8px 12px;
    font-size: 1em;
    margin-bottom: 0;
    background: #fff;
    color: var(--cor-texto);
    box-shadow: 0 1px 4px rgba(0,0,0,0.04);
}
.dark-theme .kb-search {
    background: #232a36;
    color: var(--cor-texto);
    border: 1px solid var(--cor-borda);
}
.kb-list {
    max-height: 260px;
    overflow-y: auto;
    margin-top: 6px;
    background: #f8fafc;
    border-radius: 8px;
    border: 1px solid var(--cor-borda);
    box-shadow: 0 2px 8px rgba(0,0,0,0.04);
    padding: 8px 0;
}
.dark-theme .kb-list {
    background: #232a36;
    border: 1px solid var(--cor-borda);
}
.kb-list-item {
    font-size: 1.04rem;
    padding: 10px 18px;
    border-bottom: 1px solid var(--cor-borda);
    display: flex;
    align-items: center;
    justify-content: space-between;
    color: var(--cor-texto);
    background: transparent;
    transition: background 0.15s;
}
.kb-list-item:last-child {
    border-bottom: none;
}
.kb-list-item button {
    margin-left: 10px;
    background: var(--cor-destaque);
    color: var(--cor-primaria);
    border: none;
    border-radius: 4px;
    padding: 4px 12px;
    cursor: pointer;
    font-size: 0.98em;
    font-weight: 600;
    transition: background 0.2s, color 0.2s;
    box-shadow: 0 1px 4px var(--cor-sombra);
}
.kb-list-item button:hover {
    background: var(--cor-primaria);
    color: #fff;
}
.kb-list-item a {
    color: var(--cor-secundaria);
    text-decoration: underline;
    font-size: 0.98em;
    margin-left: 8px;
    transition: color 0.18s;
}
.kb-list-item a:hover {
    color: var(--cor-primaria);
}
.dark-theme .kb-list-item a {
    color: var(--cor-destaque);
}
.dark-theme .kb-list-item a:hover {
    color: #fff;
}
@media (max-width: 768px) {
    .kb-section {
        padding: 16px 4px 12px 4px;
        max-width: 99vw;
        border-radius: 10px;
    }
    .kb-upload-form {
        padding: 10px 4px 6px 4px;
    }
    .kb-list {
        padding: 4px 0;
    }
    .kb-list-item {
        padding: 8px 8px;
        font-size: 0.98rem;
    }
}
/* --- Botão de alternância de modo (Assistente/KB) --- */
.tab-toggle-btn {
    background: var(--cor-destaque);
    color: var(--cor-primaria);
    border: none;
    border-radius: 50%;
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    cursor: pointer;
    margin-left: 8px;
    box-shadow: 0 2px 8px var(--cor-sombra);
    transition: background 0.2s, color 0.2s, box-shadow 0.2s;
    position: relative;
    z-index: 1201;
}
.tab-toggle-btn:hover, .tab-toggle-btn:focus {
    background: var(--cor-primaria);
    color: #fff;
}
.tab-toggle-menu {
    display: none;
    position: absolute;
    bottom: 54px;
    right: 0;
    background: var(--cor-superficie);
    border-radius: 12px;
    box-shadow: 0 4px 16px var(--cor-sombra);
    min-width: 180px;
    padding: 8px 0;
    flex-direction: column;
    gap: 0;
    z-index: 1202;
    border: 1px solid var(--cor-borda);
}
.tab-toggle-menu.open {
    display: flex;
    animation: fadeInMenu 0.18s;
}
@keyframes fadeInMenu {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}
.tab-toggle-menu button {
    background: none;
    border: none;
    color: var(--cor-primaria);
    font-size: 1.08em;
    padding: 12px 18px;
    text-align: left;
    width: 100%;
    cursor: pointer;
    transition: background 0.18s, color 0.18s;
    border-radius: 0;
}
.tab-toggle-menu button:hover, .tab-toggle-menu button:focus {
    background: var(--cor-destaque);
    color: var(--cor-primaria);
}
.tab-toggle-menu .active {
    font-weight: bold;
    background: #ffe082;
}

@media (max-width: 768px) {
    .tab-toggle-btn {
        width: 38px;
        height: 38px;
        font-size: 1.5rem;
        margin-left: 4px;
    }
    .tab-toggle-menu {
        min-width: 140px;
        right: 0;
        left: auto;
        bottom: 48px;
    }
    .tab-toggle-menu button {
        padding: 11px 12px;
        font-size: 1em;
    }
    
    /* Ajustes específicos para mobile */
    @media (max-width: 480px) {
        .chat-input {
            padding: 8px 10px;
            gap: 6px;
        }
        
        .chat-input textarea {
            min-height: 38px;
            padding: 8px 10px;
            font-size: 0.95rem;
        }
        
        .chat-input button {
            padding: 5px 8px;
            font-size: 1.1rem;
            min-width: 36px;
        }
        
        .tab-toggle-btn {
            width: 36px;
            height: 36px;
            font-size: 1.4rem;
        }
        
        .chatbox {
            padding: 12px;
            height: calc(100vh - 60px - 70px);
        }
        
        .chat p {
            padding: 8px 12px;
            font-size: 0.9rem;
        }
    }
}
/* =================================================================== */
/* ARQUIVO CSS COMPLETO PARA AEMI ASSISTENTE (COM NOVA IDENTIDADE VISUAL) */
/* =================================================================== */

/* --- Importação de Fontes --- */
@import url('https://fonts.googleapis.com/css2?family=Oswald:wght@400;700&family=Roboto+Mono&family=Roboto:wght@400;700&display=swap');

/* --- Variáveis de Cor e Fontes --- */
:root {
    /* Novas cores baseadas na identidade do site */
    --cor-primaria: #003366;
    --cor-secundaria: #005a9c;
    --cor-destaque: #ffc107; /* Amarelo/Dourado */
    --cor-fundo: #f8f9fa;
    --cor-superficie: #ffffff;
    --cor-texto: #181818;
    --cor-texto-secundario: #333333;
    --cor-borda: #b0b8c1;
    --cor-sombra: rgba(0, 0, 0, 0.08);
}

/* ===================== MODO NOTURNO ===================== */
.dark-theme {
    --cor-fundo: #181c24;
    --cor-superficie: #232a36;
    --cor-texto: #f5f5f5;
    --cor-texto-secundario: #b0b8c1;
    --cor-borda: #2c3440;
    --cor-sombra: rgba(0,0,0,0.45);
    --cor-primaria: #003366;
    --cor-secundaria: #005a9c;
    --cor-destaque: #ffc107;
}

.dark-theme body {
    background-color: var(--cor-fundo);
    color: var(--cor-texto);
}

.dark-theme .chatbot {
    background: var(--cor-superficie);
    box-shadow: 0 4px 20px var(--cor-sombra);
}

.dark-theme header {
    background: linear-gradient(90deg, var(--cor-primaria), var(--cor-secundaria));
    color: #fff;
    border-bottom: 5px solid var(--cor-destaque);
}

.dark-theme .chat-input textarea,
.dark-theme .chat-input button {
    background: var(--cor-superficie);
    color: var(--cor-texto);
    border-color: var(--cor-borda);
}

.dark-theme .chat-input button .material-symbols-outlined {
    color: var(--cor-primaria) !important;
}

.dark-theme .chat-input button:hover,
.dark-theme .chat-input button:focus {
    background: var(--cor-destaque);
    color: #fff;
    border-color: var(--cor-primaria);
}

.dark-theme .chatbox {
    background: transparent;
}

/* ===================== AJUSTES DE CONTRASTE E DESTAQUE NO MODO ESCURO ===================== */
.dark-theme .chat.incoming p {
    background: #232a36;
    color: var(--cor-texto);
    border: 2px solid var(--cor-destaque);
    box-shadow: 0 2px 8px rgba(0,0,0,0.18);
}
.dark-theme .chat.outgoing p {
    background: var(--cor-destaque);
    color: var(--cor-primaria);
    border: 2px solid var(--cor-primaria);
    font-weight: 700;
    box-shadow: 0 2px 8px rgba(0,0,0,0.18);
}
.dark-theme .chat .material-symbols-outlined {
    color: var(--cor-destaque) !important;
    filter: none !important;
    font-weight: normal;
}
.dark-theme .chatbox p {
    text-shadow: 0 1px 2px #0008;
    letter-spacing: 0.01em;
}

.dark-theme .chat.incoming p {
    background: #232a36;
    color: var(--cor-texto);
}

.dark-theme .chat.outgoing p {
    background: var(--cor-destaque);
    color: var(--cor-primaria);
}

/* --- Estilos Globais --- */
* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    font-family: 'Roboto', sans-serif; /* Fonte padrão do site */
    margin: 0;
    background-color: var(--cor-fundo);
    color: var(--cor-texto);
    line-height: 1.6;
}

ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

/* --- Estrutura Principal e Layout --- */
.chatbot-container {
    padding: 20px 15px; /* Espaçamento geral para telas grandes */
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    box-sizing: border-box;
}

.chatbot {
    width: 100%;
    max-width: 800px;
    height: 90vh;
    max-height: 800px;
    background: var(--cor-superficie);
    border-radius: 15px;
    box-shadow: 0 4px 20px var(--cor-sombra);
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

/* --- Cabeçalho com a Nova Identidade Visual --- */
.main-header { /* Alterado de 'header' para '.main-header' para usar a classe do HTML */
    display: flex;
    justify-content: space-between; /* Mantém os itens nas extremidades */
    align-items: center;
    padding: 1rem 1.5rem; /* Padding ajustado */
    background: linear-gradient(90deg, var(--cor-primaria), var(--cor-secundaria));
    color: #ffffff;
    border-bottom: 5px solid var(--cor-destaque);
    flex-shrink: 0;
}

.header-title { /* Alterado de 'header h2' para '.header-title' para usar a classe do HTML */
    font-family: 'Oswald', sans-serif; /* Fonte do título do site */
    font-size: 1.5rem; /* Tamanho ajustado */
    margin: 0;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    /* --- Novas propriedades para centralização e autoajuste --- */
    flex-grow: 1; /* Permite que o título ocupe o espaço disponível */
    text-align: center; /* Centraliza o texto dentro do espaço ocupado */
    /* --- Fim das novas propriedades --- */
}

.header-buttons { /* Adicionada uma classe para a div de botões no HTML */
    display: flex;
    align-items: center;
    gap: 8px;
}

.header-btn {
    background: transparent;
    border: none;
    border-radius: 50%;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    padding: 0;
    transition: background-color 0.2s;
    color: #ffffff; /* Cor ajustada para o fundo escuro */
    position: relative;
}

/* Centraliza o ícone da lixeira no botão de limpar conversa */
#clear-btn .material-icons {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    height: 100%;
    font-size: 1.6em;
    margin: 0;
}

.header-btn:hover {
    background-color: rgba(255, 255, 255, 0.15); /* Efeito de hover mais visível */
}


/* --- Menu Lateral (Sidebar) e Overlay --- */
.sidebar {
    position: fixed;
    top: 0;
    left: 0;
    width: 280px;
    height: 100%;
    background: var(--cor-superficie);
    transform: translateX(-100%);
    transition: transform 0.4s cubic-bezier(.77,0,.18,1), box-shadow 0.3s;
    will-change: transform;
    z-index: 1002;
    box-shadow: 2px 0 10px rgba(0,0,0,0.1);
    display: flex;
    flex-direction: column;
}

.sidebar.open {
    transform: translateX(0);
    animation: sidebarIn 0.4s cubic-bezier(.77,0,.18,1);
}

.sidebar-header {
    padding: 20px;
    font-size: 1.2rem;
    font-weight: 600;
    border-bottom: 1px solid var(--cor-borda);
    color: var(--cor-texto);
    flex-shrink: 0;
}

.sidebar-convs {
    flex-grow: 1;
    overflow-y: auto;
}

.sidebar-convs li {
    padding: 15px 20px;
    cursor: pointer;
    color: var(--cor-texto-secundario);
    transition: background 0.2s, color 0.2s;
    border-left: 4px solid transparent;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.sidebar-convs li:hover {
    background: #f5f5f5;
}

.sidebar-convs li.ativo {
    background: #f0f0f0;
    font-weight: 600;
    color: var(--cor-primaria);
    border-left-color: var(--cor-destaque); /* Usa a cor de destaque do site */
}

.sidebar-footer {
    padding: 20px;
    border-top: 1px solid var(--cor-borda);
    flex-shrink: 0;
}

#menu-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0,0,0,0.5);
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s ease-in-out, visibility 0s 0.3s;
}

#menu-overlay.show {
    opacity: 1;
    visibility: visible;
    transition: opacity 0.3s ease-in-out;
}

/* --- Caixa de Chat e Mensagens --- */
.chatbox {
    flex-grow: 1;
    overflow-y: auto;
    padding: 20px;
}

.chat {
    display: flex;
    margin-bottom: 15px;
    max-width: 90%;
}

.chat p {
    padding: 12px 16px;
    border-radius: 18px;
    line-height: 1.5;
    word-wrap: break-word;
}

.chat.incoming {
    justify-content: flex-start;
}

.chat.incoming p {
    background: #e9ecef; /* Fundo mais sutil, alinhado ao tema */
    color: var(--cor-texto);
    border-bottom-left-radius: 4px;
}

.chat.outgoing {
    justify-content: flex-end;
    margin-left: auto;
}

.chat.outgoing p {
    background: var(--cor-destaque); /* Usa a cor de destaque do site */
    color: var(--cor-texto); /* Cor de texto com melhor contraste */
    font-weight: 500;
    border-bottom-right-radius: 4px;
}

.chat .material-symbols-outlined {
    align-self: flex-end;
    margin-right: 10px;
    color: var(--cor-texto-secundario);
}

/* --- Área de Input --- */
.chat-input {
    display: flex;
    gap: 10px;
    align-items: center;
    padding: 15px 20px;
    border-top: 1px solid var(--cor-borda);
    flex-shrink: 0;
}

.chat-input textarea {
    flex-grow: 1;
    resize: none;
    border: 1px solid var(--cor-borda);
    border-radius: 8px;
    outline: none;
    font-size: 1rem;
    padding: 12px 15px;
    font-family: inherit;
    line-height: 1.5;
    max-height: 100px;
}

.chat-input textarea:focus {
    border-color: var(--cor-destaque);
    box-shadow: 0 0 0 3px rgba(255, 193, 7, 0.25); /* Sombra de foco com a cor de destaque */
}

/* Botão de enviar com borda amarelo/dourado e ícone azul igual ao cabeçalho */
.chat-input button {
    background: #fff;
    border: 2px solid var(--cor-destaque);
    border-radius: 8px;
    color: var(--cor-primaria);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 8px 14px;
    font-size: 1.3rem;
    cursor: pointer;
    transition: background 0.2s, color 0.2s, box-shadow 0.2s, border-color 0.2s;
}

.chat-input button:hover, .chat-input button:focus {
    background: var(--cor-destaque);
    color: #fff;
    border-color: var(--cor-primaria);
}

.chat-input button .material-symbols-outlined,
.chat-input button svg,
.chat-input button i {
    color: var(--cor-primaria) !important;
    font-size: 1.5em;
    transition: color 0.2s;
}

.chat-input button:hover .material-symbols-outlined,
.chat-input button:focus .material-symbols-outlined,
.chat-input button:hover svg,
.chat-input button:focus svg,
.chat-input button:hover i,
.chat-input button:focus i {
    color: #fff !important;
}

.attachment-btn, .search-btn {
    background: none;
    border: none;
    cursor: pointer;
    font-size: 1.2rem;
    color: var(--cor-texto);
    transition: color 0.3s ease;
    margin-right: 10px;
}

.attachment-btn:hover, .search-btn:hover {
    color: var(--cor-destaque);
}

.search-btn {
    font-size: 1.1rem;
}

/* --- Layout Responsivo para Celular (Tela Cheia) --- */
@media (max-width: 768px) {
    .main-header {
        position: fixed;
        top: 0;
        left: 0;
        width: 100vw;
        z-index: 1100;
        border-radius: 0;
        min-height: 60px;
        padding: 0.8rem 1rem;
    }
    
    .header-title {
        font-size: 1.3rem;
        text-align: center;
        flex-grow: 1;
    }
    
    .header-buttons {
        gap: 6px;
    }
    
    .header-btn {
        width: 36px;
        height: 36px;
        font-size: 1.4rem;
    }
    
    .chatbot {
        padding-top: 60px;
        height: 100vh;
        max-height: 100vh;
        border-radius: 0;
        margin: 0;
    }
    
    .chatbot-container {
        padding: 0;
        min-height: 100vh;
    }
    
    .chat-input {
        padding: 10px 15px;
        gap: 8px;
        flex-wrap: nowrap;
        overflow-x: auto;
    }
    
    .chat-input textarea {
        min-height: 40px;
        padding: 10px 12px;
        font-size: 1rem;
    }
    
    .chat-input button {
        padding: 6px 10px;
        font-size: 1.2rem;
        min-width: 40px;
        flex-shrink: 0;
    }
    
    .chatbox {
        padding: 15px;
        height: calc(100vh - 60px - 80px);
        overflow-y: auto;
    }
    
    .chat {
        margin-bottom: 12px;
        max-width: 95%;
    }
    
    .chat p {
        padding: 10px 14px;
        font-size: 0.95rem;
        line-height: 1.4;
    }
    
    .chat .material-symbols-outlined {
        font-size: 1.8em;
        margin-right: 8px;
    }
    /* Knowledge Base: responsivo */
    .kb-section {
        padding: 10px 5px;
    }
    .kb-list {
        max-height: 250px;
        overflow-y: auto;
    }
    .kb-upload-form input[type="file"] {
        width: 100%;
    }
    .kb-search {
        width: 100%;
        margin-bottom: 10px;
    }
    .kb-list-item {
        font-size: 1rem;
        padding: 8px 0;
        border-bottom: 1px solid var(--cor-borda);
        display: flex;
        align-items: center;
        justify-content: space-between;
    }
    .kb-list-item button {
        margin-left: 10px;
        background: var(--cor-destaque);
        color: var(--cor-primaria);
        border: none;
        border-radius: 4px;
        padding: 4px 10px;
        cursor: pointer;
        font-size: 0.95em;
        transition: background 0.2s, color 0.2s;
    }
    .kb-list-item button:hover {
        background: var(--cor-primaria);
        color: #fff;
    }
    .kb-section h3 {
        font-family: 'Oswald', sans-serif;
        font-size: 1.2rem;
        margin-bottom: 10px;
        color: var(--cor-primaria);
    }
    .kb-upload-form {
        display: flex;
        flex-direction: column;
        gap: 8px;
        margin-bottom: 15px;
    }
    .kb-upload-form input, .kb-upload-form textarea {
        font-size: 1em;
        padding: 7px 10px;
        border: 1px solid var(--cor-borda);
        border-radius: 6px;
    }
    .kb-upload-form button {
        align-self: flex-end;
        background: var(--cor-destaque);
        color: var(--cor-primaria);
        border: none;
        border-radius: 6px;
        padding: 7px 18px;
        font-weight: 600;
        cursor: pointer;
        transition: background 0.2s, color 0.2s;
    }
    .kb-upload-form button:hover {
        background: var(--cor-primaria);
        color: #fff;
    }
    .kb-section {
        background: var(--cor-superficie);
        border-radius: 12px;
        box-shadow: 0 2px 8px var(--cor-sombra);
        margin: 20px auto;
        max-width: 600px;
        padding: 24px 20px;
    }
    .dark-theme .kb-section {
        background: #232a36;
        color: var(--cor-texto);
        box-shadow: 0 2px 12px var(--cor-sombra);
    }
    .dark-theme .kb-section h3 {
        color: var(--cor-destaque);
    }
    .dark-theme .kb-list-item button {
        background: var(--cor-destaque);
        color: var(--cor-primaria);
    }
    .dark-theme .kb-list-item button:hover {
        background: var(--cor-primaria);
        color: #fff;
    }
    #open-menu-btn {
        position: fixed;
        top: 12px;
        left: 12px;
        z-index: 1200;
        background: var(--cor-destaque);
        color: var(--cor-primaria);
        border-radius: 50%;
        width: 44px;
        height: 44px;
        box-shadow: 0 2px 8px var(--cor-sombra);
        display: flex;
        align-items: center;
        justify-content: center;
        border: none;
        font-size: 2rem;
        transition: background 0.2s;
    }
    #open-menu-btn:hover {
        background: var(--cor-destaque);
        filter: brightness(1.1);
    }
}

/* --- Melhorias de Responsividade --- */
@media screen and (max-width: 768px) {
    .chatbot-container {
        margin: 0;
        height: 100vh;
        border-radius: 0;
    }

    .chatbox {
        padding: 10px;
    }

    .chat-input {
        padding: 10px;
    }

    .chat-input textarea {
        font-size: 16px; /* Evita zoom automático em iOS */
    }

    .kb-section {
        margin: 0;
        border-radius: 0;
        padding: 20px 15px;
    }

    .kb-upload-form {
        padding: 12px 10px;
    }
}

@media screen and (max-width: 480px) {
    .header-buttons {
        gap: 8px;
    }

    .header-btn {
        padding: 6px;
    }

    .chat {
        padding: 12px;
    }

    .chat p {
        font-size: 0.95em;
    }

    .search-result {
        padding: 12px;
        margin-bottom: 10px;
    }

    .search-result-title {
        font-size: 1em;
    }

    .search-result-content {
        font-size: 0.9em;
        line-height: 1.4;
        margin-top: 8px;
    }

    .search-result-link {
        font-size: 0.85em;
    }
}

/* --- Melhorias na exibição dos resultados de pesquisa --- */
.search-result {
    background: var(--cor-superficie);
    border: 1px solid var(--cor-borda);
    border-radius: 8px;
    padding: 16px;
    margin-bottom: 15px;
    box-shadow: 0 2px 6px var(--cor-sombra);
}

.search-result-title {
    color: var(--cor-primaria);
    font-size: 1.1em;
    font-weight: 600;
    margin-bottom: 6px;
}

.search-result-content {
    color: var(--cor-texto);
    font-size: 0.95em;
    line-height: 1.5;
    margin: 10px 0;
}

.search-result-link {
    color: var(--cor-destaque);
    font-size: 0.9em;
    text-decoration: none;
    display: block;
    margin-top: 8px;
    word-break: break-all;
}

.search-result-link:hover {
    text-decoration: underline;
}

/* --- Acessibilidade: Foco visível para botões e links --- */
a:focus, button:focus, .header-btn:focus, .sidebar-convs li:focus {
    outline: 3px solid #ff9800;
    outline-offset: 2px;
    background: #ffeb3b;
    color: #003366 !important;
    transition: outline 0.2s, background 0.2s, color 0.2s;
}

/* Foco visível para textarea e input */
textarea:focus, input:focus {
    outline: 2px solid #ff9800;
    outline-offset: 2px;
    background: #fffde7;
    transition: outline 0.2s, background 0.2s;
}

/* --- Microinterações: Feedback visual em botões --- */
button, .header-btn, .sidebar-convs li {
    transition: background 0.2s, color 0.2s, box-shadow 0.2s, transform 0.15s;
}
button:active, .header-btn:active, .sidebar-convs li:active {
    transform: scale(0.96);
    box-shadow: 0 2px 8px rgba(0,0,0,0.10);
}

/* Microinteração: animação de "pulse" ao enviar mensagem */
.chat.outgoing p:active {
    animation: pulse 0.3s;
}
@keyframes pulse {
    0% { box-shadow: 0 0 0 0 #ffc107; }
    70% { box-shadow: 0 0 0 10px rgba(255,193,7,0.2); }
    100% { box-shadow: 0 0 0 0 #ffc107; }
}

/* --- Animações e transições para sidebar e chat --- */
.sidebar {
    transition: transform 0.4s cubic-bezier(.77,0,.18,1), box-shadow 0.3s;
    will-change: transform;
}
.sidebar.open {
    animation: sidebarIn 0.4s cubic-bezier(.77,0,.18,1);
}
@keyframes sidebarIn {
    from { transform: translateX(-100%); opacity: 0.7; }
    to { transform: translateX(0); opacity: 1; }
}
.chat {
    opacity: 0;
    animation: chatFadeIn 0.5s ease forwards;
}
@keyframes chatFadeIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

/* --- Contraste maior para textos --- */
:root {
    --cor-texto: #181818;
    --cor-texto-secundario: #333333;
    --cor-borda: #b0b8c1;
}

/* Transições suaves para mensagens do chat */
.chat.incoming p, .chat.outgoing p {
    transition: background 0.2s, color 0.2s;
}

/* ===================== AJUSTE: Letras brancas e sem brilho no ícone IA no modo escuro ===================== */
.dark-theme body,
.dark-theme .chatbox p,
.dark-theme .chatbox,
.dark-theme .chat-input textarea,
.dark-theme .chat-input button {
    color: #fff !important;
}