/* Variáveis CSS para cores e fontes */
:root {
    --primary-color: #007bff;               /* Azul vibrante */
    --secondary-color: #6c757d;             /* Cinza neutro */
    --accent-color: #28a745;                /* Verde para destaque */
    --dark-bg: #0d0d0d;                     /* Fundo principal bem escuro */
    --light-text: #f5f5f5;                  /* Texto claro para contraste */
    --dark-text: #343a40;                   /* Texto escuro (usado raramente em dark theme) */
    --border-color: #333;                   /* Cor da borda para elementos */
    --card-bg: #1a1a1a;                     /* Fundo dos cards e widgets */
    --font-primary: 'Poppins', sans-serif;
    --font-secondary: 'Montserrat', sans-serif;
}

/* Reset Básico e Estilos Globais */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}
html { scroll-behavior: smooth; }
body {
    font-family: var(--font-primary);
    line-height: 1.6;
    color: var(--light-text);
    background-color: var(--dark-bg);
    overflow-x: hidden; /* Evita scroll horizontal */
}
a { color: var(--primary-color); text-decoration: none; }
a:hover { text-decoration: underline; }
ul { list-style: none; }
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Botões */
.btn {
    display: inline-block;
    background: var(--primary-color);
    color: var(--light-text);
    padding: 10px 20px;
    border-radius: 5px;
    transition: background-color .3s ease, transform .2s ease;
    border: none;
    cursor: pointer;
    font-family: var(--font-primary);
    font-weight: 600;
    text-align: center;
}
.btn:hover { background-color: #0056b3; text-decoration: none; transform: translateY(-2px); }
.btn:active { transform: translateY(0); }
.btn-primary   { background-color: var(--primary-color); }
.btn-secondary { background-color: var(--secondary-color); }
.btn-small { padding: 8px 15px; font-size: .9em; }
.section-description {
    text-align: center;
    margin-bottom: 40px;
    color: #ccc;
    font-size: 1.1em;
}

/* Header */
#header {
    background-color: var(--dark-bg);
    color: var(--light-text);
    padding: 15px 0;
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 1000;
}
#header .container { display: flex; justify-content: space-between; align-items: center; }
#header .logo img { height: 40px; transition: transform 0.3s ease; }
#header .logo img:hover { transform: scale(1.05); }

/* Desktop menu */
.desktop-menu ul { display: flex; }
.desktop-menu ul li { margin-left: 25px; }
.desktop-menu ul li a {
    color: var(--light-text);
    font-weight: 600;
    transition: color .3s ease;
}
.desktop-menu ul li a:hover { color: var(--primary-color); text-decoration: none; }

/* Mobile menu */
.mobile-menu-toggle { display: none; font-size: 1.8em; cursor: pointer; color: var(--light-text); }
.mobile-menu {
    display: none; /* Controlado por JS */
    position: fixed;
    top: 70px; /* Altura do header */
    left: 0;
    width: 100%;
    height: calc(100% - 70px);
    background-color: rgba(0,0,0,.95);
    z-index: 999;
    overflow-y: auto;
    transform: translateX(100%);
    transition: transform .3s ease-in-out;
}
.mobile-menu.active { transform: translateX(0); }
.mobile-menu ul { padding: 20px; text-align: center; }
.mobile-menu ul li { margin-bottom: 20px; }
.mobile-menu ul li a {
    color: var(--light-text);
    font-size: 1.5em;
    font-weight: 600;
    display: block;
    padding: 10px 0;
    transition: color .3s ease;
}
.mobile-menu ul li a:hover { color: var(--primary-color); }

/* Hero Section – nome “DevLogic” agora com cor fixa */
.hero {
    background: linear-gradient(135deg, var(--dark-bg) 0%, #1a1a1a 100%);
    color: var(--light-text);
    padding: 120px 0 80px;
    text-align: center;
    position: relative;
    overflow: hidden; /* Para garantir que os elementos pseudo não transbordem */
}
/* Efeito de fundo sutil (futurista/steampunk) */
.hero::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle at center, rgba(0,123,255,0.05) 0%, transparent 70%);
    animation: rotateBackground 20s linear infinite;
    z-index: 0;
}
@keyframes rotateBackground {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

.hero .container { position: relative; z-index: 1; } /* Garante que o conteúdo fique acima do efeito */

.hero-title {
    font-family: var(--font-secondary);
    font-size: 4.5rem;
    font-weight: 700;
    color: var(--primary-color); /* Cor fixa azul primário */
    text-shadow: 0 0 15px rgba(0, 123, 255, 0.6); /* Sombra sutil para destaque */
    letter-spacing: 2px;
    margin-bottom: 15px;
}
.hero-subtitle {
    font-size: 1.8rem;
    margin: 20px 0;
    color: #e0e0e0;
    text-shadow: 0 0 5px rgba(255,255,255,0.2);
}
.hero-description {
    font-size: 1.1em;
    max-width: 800px;
    margin: 0 auto 40px;
    color: #ccc;
}
.hero-buttons .btn { margin: 0 10px; padding: 12px 30px; font-size: 1rem; }

/* Botão de aviso do bot */
.hero-bot-notice {
    margin-top: 50px;
    padding: 15px 20px;
    background-color: rgba(0,123,255,.15);
    border-left: 5px solid var(--primary-color);
    border-radius: 5px;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
    text-align: left;
    font-size: 1.05em;
    color: #e0e0e0;
    box-shadow: 0 0 10px rgba(0, 123, 255, 0.2);
}
.hero-bot-notice p { margin: 0; }

/* Seções comuns */
section {
    padding: 80px 0;
    border-bottom: 1px solid var(--border-color);
    background-color: var(--dark-bg);
}
section h2 {
    font-family: var(--font-secondary);
    font-size: 3em;
    text-align: center;
    margin-bottom: 60px;
    color: var(--light-text);
    position: relative;
    text-shadow: 0 0 10px rgba(255,255,255,0.1);
}
section h2::after {
    content: '';
    display: block;
    width: 60px;
    height: 4px;
    background-color: var(--primary-color);
    margin: 15px auto 0;
    border-radius: 2px;
    box-shadow: 0 0 8px rgba(0, 123, 255, 0.5);
}

/* Services */
.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px,1fr));
    gap: 30px;
}
.service-card {
    background-color: var(--card-bg);
    padding: 30px;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0,0,0,.3);
    text-align: center;
    transition: transform .3s ease, box-shadow .3s ease;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    border: 1px solid rgba(0,123,255,0.2); /* Borda sutil */
}
.service-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 10px 25px rgba(0,0,0,.5), 0 0 20px rgba(0,123,255,0.4);
}
.service-card h3 {
    font-family: var(--font-secondary);
    font-size: 1.8em;
    margin-bottom: 15px;
    color: var(--primary-color);
    text-shadow: 0 0 8px rgba(0, 123, 255, 0.3);
}
.service-card p {
    color: #ccc;
    margin-bottom: 20px;
    flex-grow: 1;
}

/* Technologies */
.technologies { background-color: #111; }
.tech-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px,1fr));
    gap: 20px;
    text-align: center;
}
.tech-item {
    background-color: var(--card-bg);
    padding: 20px;
    border-radius: 10px;
    box-shadow: 0 3px 10px rgba(0,0,0,.2);
    transition: transform .3s ease, box-shadow .3s ease;
    border: 1px solid rgba(40,167,69,0.2); /* Borda sutil */
}
.tech-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 5px 15px rgba(0,0,0,.3), 0 0 15px rgba(40,167,69,0.4);
}
.tech-item i {
    font-size: 3em;
    color: var(--accent-color);
    margin-bottom: 10px;
    text-shadow: 0 0 10px rgba(40,167,69,0.6);
}
.tech-item span {
    display: block;
    font-weight: 600;
    color: var(--light-text);
}

/* Portfolio */
.portfolio-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px,1fr));
    gap: 30px;
}
.project-card {
    background-color: var(--card-bg);
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0,0,0,.3);
    overflow: hidden;
    transition: transform .3s ease, box-shadow .3s ease;
    display: flex;
    flex-direction: column;
    border: 1px solid rgba(108,117,125,0.2); /* Borda sutil */
}
.project-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 10px 25px rgba(0,0,0,.5), 0 0 20px rgba(108,117,125,0.4);
}
.project-card img {
    width: 100%;
    height: 220px;
    object-fit: cover;
    border-bottom: 1px solid var(--border-color);
}
.project-card h3 {
    font-family: var(--font-secondary);
    font-size: 1.6em;
    margin: 20px 20px 10px;
    color: var(--primary-color);
    text-shadow: 0 0 8px rgba(0, 123, 255, 0.3);
}
.project-card p {
    color: #ccc;
    padding: 0 20px;
    margin-bottom: 15px;
    flex-grow: 1;
}
.project-tech {
    padding: 0 20px 15px;
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}
.project-tech span {
    background-color: #333;
    color: #eee;
    padding: 5px 10px;
    border-radius: 5px;
    font-size: .8em;
    border: 1px solid #555;
}
.project-links {
    padding: 15px 20px 20px;
    border-top: 1px solid var(--border-color);
    display: flex;
    justify-content: space-around;
    gap: 10px;
}
.project-links .btn { flex: 1; text-align: center; }

/* Contact Section */
.contact { text-align: center; }
.contact .section-description { margin-bottom: 30px; }

/* Chat de Suporte (fixo na seção de contato) */
.contato-chat-widget {
    background-color: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    display: flex;
    flex-direction: column;
    height: 500px; /* Altura fixa para o chat de suporte */
    max-width: 600px;
    margin: 0 auto;
    overflow: hidden;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.3);
}

/* Footer */
.footer {
    background-color: #111;
    color: var(--light-text);
    padding: 50px 0 20px;
    border-top: 1px solid var(--border-color);
}
.footer .container { display: flex; flex-direction: column; align-items: center; }
.footer-content {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-around;
    width: 100%;
    max-width: 900px;
    margin-bottom: 30px;
    text-align: center;
}
.footer-logo, .footer-nav, .footer-social {
    flex: 1 1 250px;
    margin: 20px;
}
.footer-logo img { height: 50px; margin-bottom: 10px; }
.footer-logo p {
    font-size: 1.2em;
    font-weight: 600;
    color: var(--primary-color);
}
.footer-nav h4, .footer-social h4 {
    font-family: var(--font-secondary);
    font-size: 1.4em;
    margin-bottom: 15px;
    color: var(--light-text);
}
.footer-nav ul li, .footer-social ul li { margin-bottom: 10px; }
.footer-nav ul li a, .footer-social ul li a {
    color: #ccc;
    transition: color .3s ease;
}
.footer-nav ul li a:hover, .footer-social ul li a:hover {
    color: var(--primary-color);
    text-decoration: none;
}
.footer-social ul {
    display: flex;
    justify-content: center;
    gap: 20px;
}
.footer-social ul li a {
    font-size: 1.5em;
    color: #ccc;
}
.footer-social ul li a:hover { color: var(--primary-color); }
.footer-bottom {
    margin-top: 20px;
    font-size: 0.9em;
    color: #888;
}

/* ========================================
   ESTILOS DO CHATBOT (FLUTUANTE E FIXO)
   ======================================== */

/* Botão flutuante de toggle do chat */
.chat-toggle-btn {
    position: fixed;
    bottom: 20px;
    right: 20px;
    background-color: var(--primary-color);
    color: var(--light-text);
    border: none;
    border-radius: 50%;
    width: 60px;
    height: 60px;
    font-size: 1.8em;
    display: flex;
    justify-content: center;
    align-items: center;
    cursor: pointer;
    box-shadow: 0 4px 15px rgba(0, 123, 255, 0.4);
    z-index: 1001;
    transition: all 0.3s ease;
}
.chat-toggle-btn:hover {
    background-color: #0056b3;
    transform: translateY(-3px);
    box-shadow: 0 6px 20px rgba(0, 123, 255, 0.6);
}
.chat-toggle-btn:active {
    transform: translateY(0);
}

/* Janela do Chat Widget (flutuante) */
.chat-widget {
    position: fixed;
    bottom: 90px; /* Acima do botão de toggle */
    right: 20px;
    width: 350px;
    height: 450px;
    background-color: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.5);
    display: flex;
    flex-direction: column;
    overflow: hidden;
    z-index: 1002;
    transform: scale(0.8); /* Começa menor */
    opacity: 0; /* Começa invisível */
    pointer-events: none; /* Não interage quando invisível */
    transition: all 0.3s ease-in-out;
}
.chat-widget.active {
    transform: scale(1);
    opacity: 1;
    pointer-events: auto;
}

/* Cabeçalho do Chat */
.chat-header {
    background-color: var(--primary-color);
    color: var(--light-text);
    padding: 15px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid #0056b3;
}
.chat-header h3 {
    margin: 0;
    font-size: 1.2em;
    font-family: var(--font-secondary);
}
.chat-header .close-btn {
    background: none;
    border: none;
    color: var(--light-text);
    font-size: 1.5em;
    cursor: pointer;
    transition: color 0.2s ease;
}
.chat-header .close-btn:hover {
    color: #ffdddd;
}

/* Área de Mensagens */
.chat-messages {
    flex-grow: 1;
    padding: 15px;
    overflow-y: auto;
    background-color: #151515; /* Fundo um pouco mais escuro para as mensagens */
    border-bottom: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    gap: 10px;
}
.chat-messages::-webkit-scrollbar {
    width: 8px;
}
.chat-messages::-webkit-scrollbar-track {
    background: #222;
}
.chat-messages::-webkit-scrollbar-thumb {
    background: var(--secondary-color);
    border-radius: 4px;
}
.chat-messages::-webkit-scrollbar-thumb:hover {
    background: #888;
}

/* Estilo das Mensagens */
.chat-message {
    max-width: 80%;
    padding: 10px 15px;
    border-radius: 15px;
    line-height: 1.5;
    word-wrap: break-word;
    font-size: 0.95em;
}
.chat-message.user {
    background-color: var(--primary-color);
    color: var(--light-text);
    align-self: flex-end;
    border-bottom-right-radius: 2px;
    box-shadow: 0 2px 5px rgba(0, 123, 255, 0.3);
}
.chat-message.bot {
    background-color: var(--secondary-color);
    color: var(--light-text);
    align-self: flex-start;
    border-bottom-left-radius: 2px;
    box-shadow: 0 2px 5px rgba(108, 117, 125, 0.3);
}
.chat-message strong {
    color: #fff; /* Garante que o negrito se destaque */
}

/* Área de Input do Chat */
.chat-input-area {
    display: flex;
    padding: 10px;
    gap: 10px;
    border-top: 1px solid var(--border-color);
}

/* Input de texto */
.chat-input {
    flex: 1;
    background-color: var(--dark-bg);
    color: var(--light-text);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    padding: 10px;
    font-size: 0.95em;
    transition: border-color 0.2s ease, box-shadow 0.2s ease;
}
.chat-input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 8px rgba(0, 123, 255, 0.3);
}

/* Botão de enviar */
.chat-send-btn {
    background-color: var(--primary-color);
    color: var(--light-text);
    border: none;
    border-radius: 6px;
    width: 40px;
    height: 40px;
    display: flex;
    justify-content: center;
    align-items: center;
    cursor: pointer;
    transition: all 0.2s ease;
}
.chat-send-btn:hover {
    background-color: #0056b3;
    box-shadow: 0 0 10px rgba(0, 123, 255, 0.5);
}
.chat-send-btn:active {
    transform: scale(0.95);
}

/* Indicador de carregamento (digitando...) */
.loading-indicator {
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 5px;
    color: var(--light-text);
    font-style: italic;
    font-size: 0.9em;
    height: 20px; /* Altura para não "pular" o layout */
}
.loading-indicator.hidden {
    display: none;
}
.loading-indicator::before {
    content: 'Digitando...';
    animation: pulse 1.5s infinite;
}
@keyframes pulse {
    0% { opacity: 0.5; }
    50% { opacity: 1; }
    100% { opacity: 0.5; }
}


/* Responsividade para mobile */
@media (max-width: 768px) {
    .desktop-menu { display: none; }
    .mobile-menu-toggle { display: block; }
    .mobile-menu { display: block; }

    .hero-title { font-size: 3em; }
    .hero-subtitle { font-size: 1.4em; }
    .hero-buttons .btn { margin: 10px 0; display: block; }

    section h2 { font-size: 2.5em; }

    .footer-content { flex-direction: column; }
    .footer-logo, .footer-nav, .footer-social { margin: 10px 0; }

    /* Chat flutuante em mobile */
    .chat-widget {
        width: 90vw;
        height: 70vh;
        bottom: 80px; /* Ajusta para não cobrir o botão */
        right: 5vw;
        left: 5vw;
    }
    .chat-toggle-btn {
        bottom: 15px;
        right: 15px;
        width: 50px;
        height: 50px;
        font-size: 1.5em;
    }

    /* Chat de suporte em mobile */
    .contato-chat-widget {
        height: 400px; /* Altura ajustada para mobile */
    }
}