/* Variáveis CSS para temas */
:root {
    /* Tema Claro (Padrão) */
    --primary-color: #007bff; /* Azul vibrante */
    --primary-dark-color: #0056b3; /* Azul mais escuro para hover/ativo */
    --secondary-color: #6c757d; /* Cinza para elementos secundários */
    --background-color: #f8f9fa; /* Fundo claro */
    --card-background-color: #ffffff; /* Fundo de cards brancos */
    --text-color: #343a40; /* Texto escuro */
    --text-light-color: #6c757d; /* Texto cinza claro */
    --border-color: #dee2e6; /* Borda clara */
    --shadow-color: rgba(0, 0, 0, 0.1); /* Sombra suave */
    --success-color: #28a745; /* Verde para sucesso */
    --error-color: #dc3545; /* Vermelho para erro */
    --warning-color: #ffc107; /* Amarelo para aviso */
    --info-color: #17a2b8; /* Azul claro para informação */

    /* Cores específicas do chat */
    --chat-background: #e0f2f1; /* Fundo suave para o chat */
    --user-message-bg: #dcf8c6; /* Verde claro para mensagem do usuário */
    --bot-message-bg: #ffffff; /* Branco para mensagem do bot */
    --message-time-color: #888; /* Cor da hora da mensagem */
}

/* Tema Escuro */
body.dark-theme {
    --primary-color: #6f42c1; /* Roxo vibrante */
    --primary-dark-color: #5a359e; /* Roxo mais escuro para hover/ativo */
    --secondary-color: #adb5bd; /* Cinza claro */
    --background-color: #2c2c2c; /* Fundo escuro */
    --card-background-color: #3a3a3a; /* Fundo de cards cinza escuro */
    --text-color: #e0e0e0; /* Texto claro */
    --text-light-color: #adb5bd; /* Texto cinza escuro */
    --border-color: #4a4a4a; /* Borda escura */
    --shadow-color: rgba(0, 0, 0, 0.5); /* Sombra mais forte */
    --success-color: #28a745;
    --error-color: #dc3545;
    --warning-color: #ffc107;
    --info-color: #17a2b8;

    /* Cores específicas do chat - Tema Escuro */
    --chat-background: #1e1e1e;
    --user-message-bg: #0056b3; /* Azul escuro para mensagem do usuário */
    --bot-message-bg: #4a4a4a; /* Cinza escuro para mensagem do bot */
    --message-time-color: #a0a0a0;
}

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

body {
    font-family: 'Roboto', sans-serif; /* Ou outra fonte moderna */
    background-color: var(--background-color);
    color: var(--text-color);
    transition: background-color 0.3s ease, color 0.3s ease;
    min-height: 100vh;
    display: flex; /* Para o layout do main.html */
    flex-direction: column;
}

h1, h2, h3, h4, h5, h6 {
    color: var(--text-color);
}

a {
    color: var(--primary-color);
    text-decoration: none;
    transition: color 0.2s ease;
}

a:hover {
    color: var(--primary-dark-color);
}

button {
    background-color: var(--primary-color);
    color: white;
    border: none;
    padding: 10px 15px;
    border-radius: 5px;
    cursor: pointer;
    font-size: 1rem;
    transition: background-color 0.2s ease, transform 0.1s ease;
}

button:hover {
    background-color: var(--primary-dark-color);
    transform: translateY(-1px);
}

button:active {
    transform: translateY(0);
}

button:disabled {
    background-color: var(--secondary-color);
    cursor: not-allowed;
    opacity: 0.7;
}

input[type="text"],
input[type="password"],
input[type="email"],
textarea,
select {
    width: 100%;
    padding: 10px;
    margin-bottom: 15px;
    border: 1px solid var(--border-color);
    border-radius: 5px;
    background-color: var(--card-background-color);
    color: var(--text-color);
    font-size: 1rem;
    transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

input[type="text"]:focus,
input[type="password"]:focus,
input[type="email"]:focus,
textarea:focus,
select:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(0, 0, 255, 0.2); /* Sombra de foco azul suave */
    outline: none;
}

textarea {
    resize: vertical;
    min-height: 40px; /* Altura mínima para o textarea */
}

/* Formulário e mensagens */
.message {
    padding: 10px;
    margin-bottom: 15px;
    border-radius: 5px;
    font-weight: bold;
    text-align: center;
}

.message.success {
    background-color: rgba(40, 167, 69, 0.1);
    color: var(--success-color);
    border: 1px solid var(--success-color);
}

.message.error {
    background-color: rgba(220, 53, 69, 0.1);
    color: var(--error-color);
    border: 1px solid var(--error-color);
}

/* --- Layout da Página de Login (index.html) --- */
.login-container {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark-color) 100%);
}

.login-box {
    background-color: var(--card-background-color);
    padding: 40px;
    border-radius: 10px;
    box-shadow: 0 10px 25px var(--shadow-color);
    text-align: center;
    width: 100%;
    max-width: 400px;
}

.login-box h2 {
    margin-bottom: 30px;
    color: var(--primary-color);
    font-size: 2rem;
}

.login-box label {
    display: block;
    text-align: left;
    margin-bottom: 8px;
    font-weight: bold;
    color: var(--text-color);
}

.login-box button {
    width: 100%;
    padding: 12px;
    font-size: 1.1rem;
    margin-top: 20px;
}

.theme-toggle-login {
    position: absolute;
    top: 20px;
    right: 20px;
    background: none;
    border: none;
    color: white;
    font-size: 1.5rem;
    cursor: pointer;
    transition: color 0.2s ease;
}

.theme-toggle-login:hover {
    color: var(--secondary-color);
}

/* --- Layout da Página Principal (main.html) --- */
.app-container {
    display: flex;
    flex: 1; /* Para o main-content preencher o espaço restante */
}

/* Sidebar */
.sidebar {
    width: 250px;
    background-color: var(--card-background-color);
    box-shadow: 2px 0 5px var(--shadow-color);
    padding: 20px;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    transition: width 0.3s ease;
    z-index: 1000; /* Garante que a sidebar fique acima do conteúdo */
}

.sidebar.collapsed {
    width: 80px;
}

.sidebar-header {
    text-align: center;
    margin-bottom: 30px;
}

.sidebar-header h1 {
    font-size: 1.8rem;
    color: var(--primary-color);
    white-space: nowrap; /* Impede quebras de linha */
    overflow: hidden;
    text-overflow: ellipsis; /* Adiciona reticências se o texto for muito longo */
    transition: opacity 0.3s ease;
}

.sidebar.collapsed .sidebar-header h1 {
    opacity: 0;
    width: 0;
    height: 0;
}

.sidebar-nav ul {
    list-style: none;
}

.sidebar-nav li {
    margin-bottom: 10px;
}

.sidebar-nav a {
    display: flex;
    align-items: center;
    padding: 12px 15px;
    border-radius: 8px;
    color: var(--text-color);
    font-size: 1.1rem;
    transition: background-color 0.2s ease, color 0.2s ease;
    white-space: nowrap; /* Evita quebra de linha em menu colapsado */
}

.sidebar-nav a i {
    margin-right: 15px;
    font-size: 1.3rem;
    width: 24px; /* Garante alinhamento consistente para ícones */
    text-align: center;
}

.sidebar-nav a span {
    transition: opacity 0.3s ease, width 0.3s ease;
    overflow: hidden;
    width: auto;
}

.sidebar.collapsed .sidebar-nav a span {
    opacity: 0;
    width: 0;
    pointer-events: none; /* Impede interação com o texto invisível */
}

.sidebar-nav a:hover,
.sidebar-nav a.active {
    background-color: var(--primary-color);
    color: white;
}

.sidebar-footer {
    padding-top: 20px;
    border-top: 1px solid var(--border-color);
    text-align: center;
    display: flex;
    flex-direction: column; /* Para empilhar botões */
    gap: 10px; /* Espaçamento entre os botões */
    align-items: center;
}

.sidebar.collapsed .sidebar-footer {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.sidebar-footer button {
    width: 100%;
    font-size: 0.9rem;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 10px;
}

.sidebar.collapsed .sidebar-footer button {
    width: 40px; /* Tamanho do ícone */
    height: 40px;
    padding: 0;
    border-radius: 50%; /* Torna o botão redondo */
    overflow: hidden; /* Esconde o texto */
    font-size: 1.2rem; /* Aumenta o tamanho do ícone */
}

.sidebar.collapsed .sidebar-footer button span {
    display: none; /* Esconde o texto do botão */
}

/* Main Content */
.main-content {
    flex: 1;
    padding: 20px;
    display: flex;
    flex-direction: column;
    max-height: 100vh;
    overflow-y: auto; /* Para rolagem do conteúdo */
}

.topbar {
    background-color: var(--card-background-color);
    padding: 15px 20px;
    box-shadow: 0 2px 5px var(--shadow-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
    border-radius: 8px;
    transition: margin-left 0.3s ease;
}

.topbar.sidebar-expanded {
    margin-left: 270px; /* Para empurrar a topbar quando o sidebar está expandido */
}

.menu-toggle {
    background: none;
    border: none;
    color: var(--text-color);
    font-size: 1.5rem;
    cursor: pointer;
    margin-right: 15px;
    transition: color 0.2s ease;
}

.menu-toggle:hover {
    color: var(--primary-color);
}

.topbar-left {
    display: flex;
    align-items: center;
}

.topbar-right {
    display: flex;
    align-items: center;
    gap: 15px;
}

.user-info {
    font-weight: bold;
    color: var(--text-color);
}

/* Conteúdo carregado via AJAX */
.content-area {
    flex: 1; /* Para o conteúdo preencher o espaço restante */
    background-color: var(--card-background-color);
    padding: 20px;
    border-radius: 8px;
    box-shadow: 0 2px 10px var(--shadow-color);
    overflow-y: auto; /* Para rolagem interna se o conteúdo for grande */
}

.content-placeholder {
    text-align: center;
    padding: 50px;
    color: var(--text-light-color);
}

.loading-spinner {
    border: 4px solid var(--border-color);
    border-top: 4px solid var(--primary-color);
    border-radius: 50%;
    width: 40px;
    height: 40px;
    animation: spin 1s linear infinite;
    margin: 20px auto;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}


/* --- Estilos para o Popup de Configurações Globais --- */
.popup-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.6);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 2000;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s ease, visibility 0.3s ease;
}

.popup-overlay.active {
    opacity: 1;
    visibility: visible;
}

.popup-content {
    background-color: var(--card-background-color);
    padding: 30px;
    border-radius: 10px;
    box-shadow: 0 5px 15px var(--shadow-color);
    width: 100%;
    max-width: 500px;
    transform: translateY(-20px);
    transition: transform 0.3s ease, opacity 0.3s ease;
    position: relative; /* Para o botão de fechar */
}

.popup-overlay.active .popup-content {
    transform: translateY(0);
}

.popup-content h3 {
    margin-bottom: 20px;
    color: var(--primary-color);
    text-align: center;
}

.popup-content label {
    display: block;
    margin-bottom: 8px;
    font-weight: bold;
    color: var(--text-color);
}

.popup-content input[type="text"] {
    margin-bottom: 20px;
}

.popup-actions {
    display: flex;
    justify-content: flex-end;
    gap: 10px;
    margin-top: 20px;
}

.popup-actions button {
    width: auto;
    padding: 10px 20px;
}

.popup-actions button.cancel {
    background-color: var(--secondary-color);
}

.popup-actions button.cancel:hover {
    background-color: #5a6268;
}

/* --- Estilos da Página de Chat --- */
.chat-container {
    display: flex;
    flex-direction: column;
    height: calc(100vh - 160px); /* Ajusta a altura considerando topbar e padding */
    background-color: var(--chat-background);
    border-radius: 8px;
    overflow: hidden; /* Para o scroll interno */
    box-shadow: 0 2px 10px var(--shadow-color);
}

.chat-messages {
    flex: 1;
    padding: 20px;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: 10px;
    scrollbar-width: thin; /* Para navegadores baseados em Firefox */
    scrollbar-color: var(--primary-color) var(--border-color);
}

.chat-messages::-webkit-scrollbar {
    width: 8px;
}

.chat-messages::-webkit-scrollbar-track {
    background: var(--border-color);
    border-radius: 10px;
}

.chat-messages::-webkit-scrollbar-thumb {
    background-color: var(--primary-color);
    border-radius: 10px;
    border: 2px solid var(--chat-background);
}


.message-bubble {
    display: flex;
    align-items: flex-start;
    max-width: 80%;
    gap: 10px;
    animation: fadeIn 0.3s ease-out;
}

.message-bubble.user {
    align-self: flex-end;
    flex-direction: row-reverse; /* Avatar à direita para o usuário */
}

.message-bubble.bot {
    align-self: flex-start;
    flex-direction: row;
}

.message-avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    object-fit: cover;
    flex-shrink: 0; /* Impede que o avatar encolha */
}

.message-content {
    padding: 10px 15px;
    border-radius: 15px;
    word-wrap: break-word; /* Quebra palavras longas */
    max-width: calc(100% - 50px); /* 40px avatar + 10px gap */
    position: relative;
    box-shadow: 0 1px 2px rgba(0,0,0,0.1);
}

.message-bubble.user .message-content {
    background-color: var(--user-message-bg);
    color: var(--text-color);
    border-bottom-right-radius: 2px; /* Pequeno ajuste para a "cauda" */
}

.message-bubble.bot .message-content {
    background-color: var(--bot-message-bg);
    color: var(--text-color);
    border-bottom-left-radius: 2px; /* Pequeno ajuste para a "cauda" */
}

.message-content p {
    margin-bottom: 5px;
    line-height: 1.4;
}

.message-time {
    font-size: 0.75rem;
    color: var(--message-time-color);
    text-align: right;
    display: block;
}

.chat-input-area {
    display: flex;
    padding: 15px;
    gap: 10px;
    border-top: 1px solid var(--border-color);
    background-color: var(--card-background-color);
    align-items: flex-end; /* Alinha o botão com o fundo do textarea */
}

.chat-input-area textarea {
    flex: 1;
    border-radius: 20px;
    padding: 10px 15px;
    resize: none; /* Controlado por JS */
    max-height: 120px; /* Limite de altura para o textarea */
    overflow-y: auto; /* Adiciona scroll se exceder max-height */
}

.chat-input-area button {
    width: auto;
    padding: 10px 20px;
    border-radius: 20px;
    font-size: 1rem;
}

.chat-actions {
    display: flex;
    justify-content: flex-end;
    margin-top: 10px;
    padding: 0 15px 15px 0; /* Ajuste para alinhar com input */
}

/* Animação para mensagens */
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

/* --- Estilos para Gerenciamento de Usuários (users.html) --- */
.users-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
}

.users-header h2 {
    margin: 0;
}

.user-search-bar {
    width: 100%;
    padding: 10px;
    margin-bottom: 20px;
    border-radius: 25px; /* Bordas mais arredondadas */
    border: 1px solid var(--border-color);
    background-color: var(--card-background-color);
    color: var(--text-color);
    font-size: 1rem;
    padding-left: 40px; /* Espaço para o ícone de busca */
    background-image: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" width="24" height="24" viewBox="0 0 24 24" fill="none" stroke="%236c757d" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><circle cx="11" cy="11" r="8"></circle><line x1="21" y1="21" x2="16.65" y2="16.65"></line></svg>'); /* Ícone de lupa */
    background-repeat: no-repeat;
    background-position: 10px center;
    background-size: 20px;
}

.user-cards-container {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 20px;
    padding-bottom: 20px; /* Para que o último card não fique colado no fim */
}

.user-card {
    background-color: var(--card-background-color);
    border-radius: 10px;
    box-shadow: 0 4px 12px var(--shadow-color);
    padding: 20px;
    display: flex;
    flex-direction: column;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.user-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 6px 15px rgba(0, 0, 0, 0.15);
}

.user-card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 15px;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 10px;
}

.user-card-header h3 {
    margin: 0;
    color: var(--primary-color);
}

.user-card-info p {
    margin: 8px 0;
    font-size: 0.95rem;
    color: var(--text-color);
}

.user-card-info span {
    font-weight: bold;
    color: var(--primary-dark-color);
}

.edit-icon {
    color: var(--secondary-color);
    cursor: pointer;
    font-size: 1.2rem;
    transition: color 0.2s ease;
}

.edit-icon:hover {
    color: var(--primary-color);
}

.user-status {
    display: flex;
    align-items: center;
    font-size: 0.9rem;
    color: var(--text-light-color);
    margin-top: 10px;
}

.status-indicator {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    margin-right: 8px;
    border: 1px solid var(--border-color);
}

.status-active {
    background-color: var(--success-color);
}

.status-inactive {
    background-color: var(--error-color);
}

/* --- Estilos para o Cadastro de Usuário (register.html) --- */
.register-form-container {
    max-width: 600px;
    margin: 30px auto;
    background-color: var(--card-background-color);
    padding: 30px;
    border-radius: 10px;
    box-shadow: 0 4px 12px var(--shadow-color);
}

.register-form-container h2 {
    text-align: center;
    margin-bottom: 30px;
    color: var(--primary-color);
}

.form-group {
    margin-bottom: 15px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: bold;
    color: var(--text-color);
}

.form-group input[type="text"],
.form-group input[type="password"],
.form-group select {
    width: 100%;
    padding: 10px;
    border: 1px solid var(--border-color);
    border-radius: 5px;
    background-color: var(--background-color);
    color: var(--text-color);
}

.form-group input[type="checkbox"] {
    margin-right: 10px;
    transform: scale(1.2); /* Aumenta o tamanho do checkbox */
    accent-color: var(--primary-color); /* Altera a cor do checkbox */
}

.form-group.checkbox-group {
    display: flex;
    align-items: center;
    margin-top: 20px;
}

.register-form-container button {
    width: 100%;
    padding: 12px;
    margin-top: 20px;
    font-size: 1.1rem;
}

/* --- Estilos para o popup de confirmação (limpar chat) --- */
.confirm-popup-content {
    background-color: var(--card-background-color);
    padding: 30px;
    border-radius: 10px;
    box-shadow: 0 5px 15px var(--shadow-color);
    width: 100%;
    max-width: 400px;
    text-align: center;
}

.confirm-popup-content h3 {
    margin-bottom: 20px;
    color: var(--error-color); /* Altera a cor do título para indicar ação crítica */
}

.confirm-popup-content p {
    margin-bottom: 25px;
    color: var(--text-color);
}

.confirm-popup-actions {
    display: flex;
    justify-content: center;
    gap: 15px;
}

.confirm-popup-actions button {
    width: auto;
    padding: 10px 25px;
}

.confirm-popup-actions button.confirm-danger {
    background-color: var(--error-color); /* Botão de confirmação em vermelho */
}

.confirm-popup-actions button.confirm-danger:hover {
    background-color: #c82333; /* Vermelho mais escuro no hover */
}

/* --- Responsividade --- */
@media (max-width: 768px) {
    .sidebar {
        position: fixed;
        left: -250px; /* Esconde a sidebar por padrão */
        height: 100%;
        top: 0;
        width: 250px;
        box-shadow: 2px 0 10px rgba(0, 0, 0, 0.2);
        z-index: 1000;
    }

    .sidebar.collapsed {
        width: 250px; /* Em mobile, colapsado significa que está escondido */
        left: -250px;
    }

    .sidebar.expanded {
        left: 0; /* Mostra a sidebar */
    }

    .app-container {
        flex-direction: column;
    }

    .topbar {
        margin-left: 0; /* Reseta o margin-left da topbar em mobile */
        border-radius: 0; /* Sem borda arredondada no topo */
    }

    .topbar.sidebar-expanded {
        margin-left: 0; /* Não empurra a topbar em mobile */
    }

    .main-content {
        padding: 15px;
        margin-top: 0; /* Ajuste para o topbar */
    }

    .menu-toggle {
        display: block; /* Mostra o toggle do menu em mobile */
    }

    .topbar-right {
        gap: 10px;
    }

    .user-info {
        display: none; /* Esconde o nome do usuário em telas menores */
    }

    .login-box {
        padding: 30px;
        margin: 20px;
    }

    .chat-container {
        height: calc(100vh - 120px); /* Ajusta altura para telas menores */
    }

    .chat-input-area {
        padding: 10px;
    }

    .chat-input-area textarea {
        padding: 8px 12px;
    }

    .chat-input-area button {
        padding: 8px 15px;
    }

    .user-card {
        padding: 15px;
    }

    .register-form-container {
        margin: 15px;
        padding: 20px;
    }

    .popup-content {
        max-width: 90%;
        padding: 20px;
    }
}