/* ======================================================
   JENCAM STUDIO - style.css (Versão Avançada HubSpot)
   ====================================================== */

/* ======================================================
   1. RESET & VARIÁVEIS
   ====================================================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

:root {
    --primary: #2563eb;
    --primary-hover: #1d4ed8;
    --secondary: #06b6d4;
    --dark: #0f172a;
    --dark-card: #1e293b;
    --text-muted: #64748b;
    --light-bg: #f8fafc;
    --white: #ffffff;
    --border-color: #e2e8f0;
    --shadow-sm: 0 10px 25px rgba(0, 0, 0, 0.05);
    --shadow-lg: 0 20px 40px rgba(0, 0, 0, 0.1);
}

/* Modo Escuro */
body.dark {
    --light-bg: #0b132b;
    --white: #1e293b;
    --text-muted: #cbd5e1;
    --border-color: #334155;
    background-color: #0b132b;
    color: #f8fafc;
}

body {
    font-family: 'Inter', sans-serif;
    background-color: #ffffff;
    color: #1e293b;
    overflow-x: hidden;
    transition: background-color 0.3s ease, color 0.3s ease;
}

h1, h2, h3, h4 {
    font-family: 'Poppins', sans-serif;
}

/* ======================================================
   2. REUTILIZÁVEIS & CONTAINER
   ====================================================== */
.container {
    width: 90%;
    max-width: 1200px;
    margin: auto;
}

.section-badge {
    display: table;
    margin: 0 auto 15px auto;
    padding: 8px 20px;
    border-radius: 30px;
    background: #dbeafe;
    color: var(--primary);
    font-weight: 700;
    font-size: 14px;
}

body.dark .section-badge {
    background: #1e3a8a;
    color: #93c5fd;
}

.section-text {
    text-align: center;
    color: var(--text-muted);
    font-size: 18px;
    margin-bottom: 50px;
}

/* Botões */
.btn {
    background: var(--primary);
    color: #ffffff;
    text-decoration: none;
    padding: 14px 28px;
    border-radius: 8px;
    transition: all 0.3s ease;
    display: inline-block;
    font-weight: 600;
    border: none;
    cursor: pointer;
    box-shadow: 0 4px 15px rgba(37, 99, 235, 0.3);
}

.btn:hover {
    background: var(--primary-hover);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(37, 99, 235, 0.4);
}

.btn-sm {
    padding: 10px 18px;
    font-size: 14px;
}

.btn-outline {
    border: 2px solid var(--primary);
    color: var(--primary);
    text-decoration: none;
    padding: 14px 28px;
    border-radius: 8px;
    transition: all 0.3s ease;
    font-weight: 600;
    display: inline-block;
}

.btn-outline:hover {
    background: var(--primary);
    color: #ffffff;
}

body.dark .btn-outline {
    color: #ffffff;
    border-color: var(--secondary);
}

body.dark .btn-outline:hover {
    background: var(--secondary);
}

/* ======================================================
   3. HEADER / CABEÇALHO
   ====================================================== */
header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    transition: all 0.35s ease;
    background: rgba(15, 23, 42, 0.85);
    backdrop-filter: blur(15px);
}

header.header-scroll {
    background: #0f172a;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
}

header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 80px;
}

.logo img {
    height: 42px;
    width: auto;
}

nav ul {
    display: flex;
    gap: 25px;
    list-style: none;
}

nav a {
    color: #ffffff;
    text-decoration: none;
    transition: 0.3s;
    font-weight: 500;
    font-size: 15px;
}

nav a:hover {
    color: var(--secondary);
}

.header-buttons {
    display: flex;
    align-items: center;
    gap: 15px;
}

.theme-toggle {
    width: 42px;
    height: 42px;
    border: none;
    border-radius: 50%;
    cursor: pointer;
    font-size: 18px;
    background: rgba(255, 255, 255, 0.15);
    color: #ffffff;
    transition: 0.3s;
    display: flex;
    align-items: center;
    justify-content: center;
}

.theme-toggle:hover {
    transform: rotate(180deg);
}

.menu-toggle {
    display: none;
    font-size: 26px;
    color: #ffffff;
    cursor: pointer;
}

/* ======================================================
   4. HERO
   ====================================================== */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding-top: 100px;
    background: linear-gradient(135deg, #f8fbff, #eef6ff);
}

body.dark .hero {
    background: linear-gradient(135deg, #0b132b, #1e293b);
}

.hero-bg {
    position: absolute;
    width: 700px;
    height: 700px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(37, 99, 235, 0.12), rgba(6, 182, 212, 0));
    top: -200px;
    right: -200px;
    z-index: 0;
}

.hero-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 50px;
    position: relative;
    z-index: 2;
}

.hero-text {
    flex: 1.2;
}

.badge {
    display: inline-block;
    background: #dbeafe;
    color: var(--primary);
    padding: 8px 18px;
    border-radius: 30px;
    margin-bottom: 20px;
    font-weight: 600;
    font-size: 14px;
}

body.dark .badge {
    background: #1e3a8a;
    color: #93c5fd;
}

.hero h1 {
    font-size: 52px;
    line-height: 1.15;
    margin-bottom: 20px;
    color: #0f172a;
}

body.dark .hero h1 {
    color: #ffffff;
}

.hero p {
    color: var(--text-muted);
    font-size: 18px;
    line-height: 1.7;
    margin-bottom: 35px;
}

.hero-buttons {
    display: flex;
    gap: 15px;
    flex-wrap: wrap;
}

.hero-stats {
    display: flex;
    gap: 40px;
    margin-top: 45px;
    border-top: 1px solid var(--border-color);
    padding-top: 25px;
}

.hero-stats h3 {
    color: var(--primary);
    font-size: 32px;
    font-weight: 800;
}

.hero-stats span {
    color: var(--text-muted);
    font-size: 14px;
}

.hero-image {
    flex: 1;
    display: flex;
    justify-content: center;
}

.hero-image img {
    width: 100%;
    max-width: 500px;
    animation: flutuar 5s ease-in-out infinite;
}

@keyframes flutuar {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-15px); }
}

/* ======================================================
   5. CLIENTES / FERRAMENTAS
   ====================================================== */
.clients {
    padding: 50px 0;
    background: var(--white);
    border-bottom: 1px solid var(--border-color);
}

.clients-title {
    text-align: center;
    color: var(--text-muted);
    font-size: 15px;
    font-weight: 600;
    margin-bottom: 30px;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.clients-logos {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 40px;
    flex-wrap: wrap;
}

.logo-item {
    font-size: 20px;
    font-weight: 700;
    color: #94a3b8;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    gap: 8px;
}

.logo-item:hover {
    color: var(--primary);
    transform: translateY(-3px);
}

/* ======================================================
   6. ECOSSISTEMA DE SOLUÇÕES (TABS HUBSPOT STYLE)
   ====================================================== */
.solutions-tabs-section {
    padding: 100px 0;
    background: var(--white);
}

.solutions-tabs-section h2 {
    text-align: center;
    font-size: 40px;
}

.tabs-nav {
    display: flex;
    justify-content: center;
    gap: 15px;
    margin: 40px 0 30px 0;
    flex-wrap: wrap;
}

.tab-btn {
    padding: 14px 28px;
    font-size: 16px;
    font-weight: 600;
    border: 1px solid var(--border-color);
    background: var(--light-bg);
    color: var(--text-muted);
    border-radius: 10px;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    gap: 10px;
}

.tab-btn.active, .tab-btn:hover {
    background: var(--primary);
    color: #ffffff;
    border-color: var(--primary);
    box-shadow: 0 5px 15px rgba(37, 99, 235, 0.25);
}

.tabs-content-container {
    background: var(--light-bg);
    border: 1px solid var(--border-color);
    border-radius: 20px;
    padding: 40px;
}

.tab-content {
    display: none;
}

.tab-content.active {
    display: block;
    animation: fadeIn 0.4s ease;
}

.tab-grid {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: 40px;
    align-items: center;
}

.tab-text h3 {
    font-size: 28px;
    margin-bottom: 15px;
}

.tab-text p {
    color: var(--text-muted);
    line-height: 1.7;
    margin-bottom: 20px;
}

.tab-list {
    list-style: none;
    margin-bottom: 25px;
}

.tab-list li {
    margin-bottom: 12px;
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 500;
}

.tab-list i {
    color: var(--secondary);
}

.tab-image img {
    width: 100%;
    height: 300px;
    object-fit: cover;
    border-radius: 12px;
    box-shadow: var(--shadow-lg);
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

/* ======================================================
   7. SERVIÇOS
   ====================================================== */
.services {
    background: var(--light-bg);
    padding: 100px 0;
}

.services h2 {
    text-align: center;
    font-size: 40px;
    margin-bottom: 15px;
}

.cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.card {
    background: var(--white);
    padding: 40px 30px;
    border-radius: 16px;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-color);
    transition: all 0.35s ease;
}

.card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary);
}

.icon {
    font-size: 45px;
    margin-bottom: 20px;
    color: var(--primary);
}

.card h3 {
    margin-bottom: 15px;
    font-size: 22px;
}

.card p {
    color: var(--text-muted);
    line-height: 1.7;
}

/* ======================================================
   8. CALCULADORA INTERATIVA
   ====================================================== */
.calculator-section {
    padding: 100px 0;
    background: var(--white);
}

.calculator-section h2 {
    text-align: center;
    font-size: 40px;
}

.calculator-box {
    background: var(--light-bg);
    border: 1px solid var(--border-color);
    border-radius: 20px;
    padding: 40px;
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: 40px;
    align-items: center;
}

.calc-inputs {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.calc-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.calc-group label {
    font-weight: 600;
    font-size: 15px;
}

.calc-group select {
    padding: 14px;
    border-radius: 8px;
    border: 1px solid var(--border-color);
    background: var(--white);
    color: inherit;
    font-size: 15px;
    outline: none;
    cursor: pointer;
}

.calc-result {
    background: var(--white);
    padding: 30px;
    border-radius: 16px;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-color);
    text-align: center;
}

.result-card h4 {
    font-size: 16px;
    color: var(--text-muted);
    margin-bottom: 10px;
}

.result-value {
    font-size: 24px;
    font-weight: 800;
    color: var(--primary);
    margin-bottom: 15px;
}

.result-card p {
    font-size: 14px;
    color: var(--text-muted);
    margin-bottom: 20px;
}

/* ======================================================
   9. PORTFÓLIO
   ====================================================== */
.portfolio {
    padding: 100px 0;
    background: var(--light-bg);
}

.portfolio h2 {
    text-align: center;
    font-size: 40px;
    margin-bottom: 15px;
}

.portfolio-filter {
    display: flex;
    justify-content: center;
    gap: 12px;
    margin: 40px 0;
    flex-wrap: wrap;
}

.filter-btn {
    border: none;
    padding: 10px 22px;
    border-radius: 30px;
    cursor: pointer;
    background: var(--white);
    color: var(--text-muted);
    transition: 0.3s;
    font-weight: 600;
    border: 1px solid var(--border-color);
}

.filter-btn.active,
.filter-btn:hover {
    background: var(--primary);
    color: #ffffff;
    border-color: var(--primary);
}

.portfolio-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.portfolio-item {
    position: relative;
    overflow: hidden;
    border-radius: 16px;
    cursor: pointer;
    box-shadow: var(--shadow-sm);
}

.portfolio-item img {
    width: 100%;
    height: 260px;
    object-fit: cover;
    display: block;
    transition: transform 0.5s ease;
}

.portfolio-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(to top, rgba(15, 23, 42, 0.9), rgba(0, 0, 0, 0.1));
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    padding: 25px;
    color: #ffffff;
    opacity: 0;
    transition: opacity 0.35s ease;
}

.portfolio-item:hover img {
    transform: scale(1.08);
}

.portfolio-item:hover .portfolio-overlay {
    opacity: 1;
}

/* ======================================================
   10. SOBRE
   ====================================================== */
.about {
    padding: 100px 0;
    background: var(--white);
}

.about-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.about-image img {
    width: 100%;
    border-radius: 16px;
    box-shadow: var(--shadow-lg);
}

.about-content h2 {
    font-size: 38px;
    margin: 20px 0;
}

.about-content p {
    color: var(--text-muted);
    line-height: 1.8;
    margin-bottom: 20px;
}

.about-list {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
    margin: 30px 0;
}

.about-list div {
    background: var(--light-bg);
    padding: 12px 16px;
    border-radius: 8px;
    font-weight: 600;
    font-size: 14px;
    box-shadow: var(--shadow-sm);
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--primary);
}

/* ======================================================
   11. PROCESSO
   ====================================================== */
.process {
    padding: 100px 0;
    background: var(--light-bg);
}

.process h2 {
    text-align: center;
    font-size: 40px;
}

.process-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 25px;
    margin-top: 50px;
}

.process-card {
    background: var(--white);
    padding: 35px 25px;
    border-radius: 16px;
    text-align: center;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-color);
    transition: 0.3s;
}

.process-card:hover {
    transform: translateY(-8px);
    border-color: var(--primary);
}

.process-number {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: #ffffff;
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 22px;
    font-weight: 700;
    margin: 0 auto 20px;
}

.process-card h3 {
    margin-bottom: 12px;
}

.process-card p {
    color: var(--text-muted);
    font-size: 14px;
    line-height: 1.6;
}

/* ======================================================
   12. FAQ (ACCORDION)
   ====================================================== */
.faq-section {
    padding: 100px 0;
    background: var(--white);
}

.faq-section h2 {
    text-align: center;
    font-size: 40px;
}

.faq-accordion {
    max-width: 800px;
    margin: 40px auto 0 auto;
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.faq-item {
    border: 1px solid var(--border-color);
    border-radius: 12px;
    overflow: hidden;
    background: var(--light-bg);
}

.faq-question {
    width: 100%;
    padding: 20px;
    text-align: left;
    background: none;
    border: none;
    font-size: 17px;
    font-weight: 600;
    color: inherit;
    display: flex;
    justify-content: space-between;
    align-items: center;
    cursor: pointer;
}

.faq-question i {
    transition: transform 0.3s ease;
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.35s ease, padding 0.35s ease;
    padding: 0 20px;
    color: var(--text-muted);
    line-height: 1.7;
}

.faq-item.active .faq-answer {
    max-height: 200px;
    padding: 0 20px 20px 20px;
}

.faq-item.active .faq-question i {
    transform: rotate(180deg);
    color: var(--primary);
}

/* ======================================================
   13. DEPOIMENTOS
   ====================================================== */
.testimonials {
    padding: 100px 0;
    background: var(--light-bg);
}

.testimonials h2 {
    text-align: center;
    font-size: 40px;
}

.testimonial-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    margin-top: 50px;
}

.testimonial-card {
    background: var(--white);
    padding: 35px;
    border-radius: 16px;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-color);
}

.stars {
    color: #fbbf24;
    font-size: 18px;
    margin-bottom: 15px;
}

.testimonial-card p {
    color: var(--text-muted);
    line-height: 1.7;
    margin-bottom: 25px;
    font-style: italic;
}

.testimonial-card h3 {
    font-size: 18px;
    margin-bottom: 2px;
}

.testimonial-card span {
    color: #94a3b8;
    font-size: 14px;
}

/* ======================================================
   14. NEWSLETTER BANNER
   ====================================================== */
.newsletter-section {
    padding: 60px 0;
    background: var(--white);
}

.newsletter-box {
    background: linear-gradient(135deg, var(--dark), #1e293b);
    color: #ffffff;
    border-radius: 20px;
    padding: 50px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 30px;
}

.newsletter-text h2 {
    font-size: 26px;
    margin-bottom: 8px;
}

.newsletter-text p {
    color: #cbd5e1;
}

.newsletter-form {
    display: flex;
    gap: 10px;
    min-width: 380px;
}

.newsletter-form input {
    flex: 1;
    padding: 14px;
    border-radius: 8px;
    border: none;
    outline: none;
}

/* ======================================================
   15. CONTATO
   ====================================================== */
.contact {
    padding: 100px 0;
    background: var(--light-bg);
}

.contact h2 {
    text-align: center;
    font-size: 40px;
}

.contact-container {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: 50px;
    margin-top: 50px;
}

.contact-info h3 {
    font-size: 28px;
    margin-bottom: 15px;
}

.contact-info p {
    color: var(--text-muted);
    line-height: 1.6;
}

.info-items {
    margin-top: 30px;
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.info-items p {
    display: flex;
    align-items: center;
    gap: 12px;
    font-weight: 500;
}

.info-items i {
    color: var(--primary);
    font-size: 20px;
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.contact-form input,
.contact-form textarea {
    width: 100%;
    padding: 15px;
    border: 1px solid var(--border-color);
    background: var(--white);
    color: inherit;
    border-radius: 8px;
    font-size: 15px;
    font-family: inherit;
    transition: 0.3s;
}

.contact-form input:focus,
.contact-form textarea:focus {
    border-color: var(--primary);
    outline: none;
    box-shadow: 0 0 10px rgba(37, 99, 235, 0.15);
}

/* ======================================================
   16. ESTATÍSTICAS
   ====================================================== */
.stats {
    background: var(--dark);
    color: #ffffff;
    padding: 80px 0;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
    text-align: center;
}

.stat h2 {
    font-size: 52px;
    color: var(--secondary);
    margin-bottom: 5px;
}

.stat p {
    font-size: 16px;
    color: #cbd5e1;
}

/* ======================================================
   17. FOOTER
   ====================================================== */
footer {
    background: #090d16;
    color: #ffffff;
    padding-top: 60px;
}

.footer-container {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 50px;
    padding-bottom: 40px;
}

.footer-logo h2 {
    font-size: 28px;
    margin-bottom: 10px;
}

.footer-logo span {
    color: var(--secondary);
}

.footer-logo p {
    color: #94a3b8;
}

.footer-links h3,
.footer-contact h3 {
    margin-bottom: 15px;
    font-size: 18px;
}

.footer-links ul {
    list-style: none;
}

.footer-links li {
    margin-bottom: 10px;
}

.footer-links a {
    color: #cbd5e1;
    text-decoration: none;
    transition: 0.3s;
}

.footer-links a:hover {
    color: var(--secondary);
}

.footer-contact p {
    margin-bottom: 10px;
    color: #cbd5e1;
}

.footer-copy {
    text-align: center;
    padding: 20px;
    border-top: 1px solid rgba(255, 255, 255, 0.08);
    color: #94a3b8;
    font-size: 14px;
}

/* ======================================================
   18. BOTÕES FLUTUANTES & CHAT IA
   ====================================================== */
.whatsapp {
    position: fixed;
    right: 25px;
    bottom: 25px;
    width: 60px;
    height: 60px;
    background: #25D366;
    color: #fff;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    text-decoration: none;
    font-size: 32px;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.25);
    z-index: 999;
    transition: 0.3s;
}

.whatsapp:hover {
    transform: scale(1.1);
}

#topo {
    position: fixed;
    right: 25px;
    bottom: 95px;
    width: 50px;
    height: 50px;
    border: none;
    border-radius: 50%;
    background: var(--primary);
    color: #ffffff;
    font-size: 20px;
    cursor: pointer;
    display: none;
    align-items: center;
    justify-content: center;
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.2);
    z-index: 998;
    transition: 0.3s;
}

#topo:hover {
    background: var(--primary-hover);
}

/* AI Chatbot Widget */
.ai-chat-widget {
    position: fixed;
    left: 25px;
    bottom: 25px;
    z-index: 1001;
}

.ai-chat-button {
    width: 55px;
    height: 55px;
    border-radius: 50%;
    background: var(--primary);
    color: #ffffff;
    border: none;
    font-size: 24px;
    cursor: pointer;
    box-shadow: 0 10px 25px rgba(0,0,0,0.2);
    transition: 0.3s;
}

.ai-chat-button:hover {
    transform: scale(1.1);
}

.ai-chat-box {
    position: absolute;
    bottom: 70px;
    left: 0;
    width: 320px;
    background: var(--white);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    box-shadow: var(--shadow-lg);
    display: none;
    flex-direction: column;
    overflow: hidden;
}

.ai-chat-box.active {
    display: flex;
}

.ai-chat-header {
    background: var(--primary);
    color: #ffffff;
    padding: 15px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-weight: 600;
}

.ai-chat-close {
    background: none;
    border: none;
    color: #ffffff;
    font-size: 22px;
    cursor: pointer;
}

.ai-chat-body {
    padding: 15px;
    max-height: 220px;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: 10px;
    font-size: 14px;
}

.chat-msg {
    padding: 10px 14px;
    border-radius: 12px;
    line-height: 1.4;
}

.ai-msg {
    background: var(--light-bg);
    color: inherit;
    align-self: flex-start;
}

.user-msg {
    background: var(--primary);
    color: #ffffff;
    align-self: flex-end;
}

.ai-chat-options {
    padding: 10px 15px 15px 15px;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.chat-opt-btn {
    border: 1px solid var(--primary);
    background: none;
    color: var(--primary);
    padding: 8px;
    border-radius: 6px;
    font-size: 13px;
    cursor: pointer;
    text-align: left;
    transition: 0.2s;
}

.chat-opt-btn:hover {
    background: var(--primary);
    color: #ffffff;
}

/* ======================================================
   19. LIGHTBOX
   ====================================================== */
.lightbox {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.9);
    display: flex;
    justify-content: center;
    align-items: center;
    opacity: 0;
    visibility: hidden;
    transition: 0.35s;
    z-index: 9999;
}

.lightbox.active {
    opacity: 1;
    visibility: visible;
}

.lightbox img {
    max-width: 90%;
    max-height: 85%;
    border-radius: 12px;
}

.close-lightbox {
    position: absolute;
    top: 25px;
    right: 35px;
    font-size: 45px;
    color: #ffffff;
    cursor: pointer;
}

/* ======================================================
   20. RESPONSIVIDADE (@MEDIA QUERIES)
   ====================================================== */
@media (max-width: 992px) {
    .menu-toggle {
        display: block;
    }

    nav {
        position: absolute;
        top: 80px;
        left: 0;
        width: 100%;
        background: var(--dark);
        display: none;
        padding: 30px 0;
    }

    nav.active {
        display: block;
    }

    nav ul {
        flex-direction: column;
        align-items: center;
        gap: 20px;
    }

    .header-buttons {
        display: none;
    }

    .hero-content,
    .tab-grid,
    .calculator-box,
    .about-container,
    .contact-container,
    .newsletter-box {
        grid-template-columns: 1fr;
        flex-direction: column;
        text-align: center;
    }

    .hero h1 {
        font-size: 36px;
    }

    .hero-buttons,
    .hero-stats {
        justify-content: center;
    }

    .newsletter-form {
        min-width: 100%;
        flex-direction: column;
    }

    .footer-container {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 600px) {
    .stats-grid {
        grid-template-columns: 1fr;
    }

    .about-list {
        grid-template-columns: 1fr;
    }

    .hero h1 {
        font-size: 28px;
    }
}