/* ============================================================
   LANDING PAGE — AUTOMAÇÃO E SISTEMAS
   Design: Formal · Nobre · Tradicional · Moderno
   Paleta: Branco, Vermelho profundo, Cinza, Grafite
   Tipografia: Playfair Display (títulos) + Inter (corpo)
   ============================================================ */

/* ============ RESET & BASE ============ */
*,
*::before,
*::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --color-white: #FFFFFF;
    --color-off-white: #F7F8FA;
    --color-red-deep: #1A2A5C;              /* azul marinho profundo */
    --color-red-institutional: #2C3E7B;     /* azul royal */
    --color-red-pastel: #A5B4D4;            /* azul pastel (apenas decorativo) */
    --color-red-light: #EDF1F7;             /* azul muito claro */
    --color-gray-light: #EEF1F5;
    --color-gray-medium: #5C5C5C;           /* escurecido para melhor contraste */
    --color-grafite: #2D2D2D;
    --color-border: #E0E4EB;
    --color-blue-light: #C9D3E8;            /* novo: azul claro para textos sobre fundo escuro */
    
    --font-serif: 'Playfair Display', Georgia, 'Times New Roman', serif;
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    
    --container-width: 1100px;
    --transition: 0.3s ease;
    --border-radius: 6px;
    --box-shadow: 0 2px 20px rgba(0, 0, 0, 0.06);
    --box-shadow-hover: 0 4px 30px rgba(0, 0, 0, 0.1);
    --focus-ring: 0 0 0 3px rgba(44, 62, 123, 0.25);
}


html {
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-sans);
    font-size: 16px;
    line-height: 1.6;
    color: var(--color-grafite);
    background-color: var(--color-white);
    overflow-x: hidden;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

a {
    color: var(--color-red-institutional);
    text-decoration: none;
    transition: color var(--transition);
}

a:hover {
    color: var(--color-red-deep);
}

ul, ol {
    list-style: none;
}

.container {
    width: 100%;
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 24px;
}

/* ============ TIPOGRAFIA ============ */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-serif);
    font-weight: 600;
    line-height: 1.25;
    color: var(--color-grafite);
    letter-spacing: -0.01em;
}

em {
    font-style: italic;
    color: var(--color-red-institutional);
}

.section-title {
    font-size: clamp(1.75rem, 4vw, 2.5rem);
    margin-bottom: 16px;
}

.section-subtitle {
    font-size: 1.05rem;
    color: var(--color-gray-medium);
    max-width: 650px;
    margin: 0 auto;
    line-height: 1.7;
}

.section-eyebrow {
    display: inline-block;
    font-family: var(--font-sans);
    font-size: 0.8rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.12em;
    color: var(--color-red-institutional);
    margin-bottom: 12px;
}

.section-header {
    text-align: center;
    margin-bottom: 48px;
}

/* ============ BOTÕES ============ */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    font-family: var(--font-sans);
    font-size: 0.95rem;
    font-weight: 500;
    padding: 14px 28px;
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: all var(--transition);
    border: none;
    text-align: center;
    justify-content: center;
    line-height: 1.4;
}

.btn:focus-visible {
    outline: none;
    box-shadow: var(--focus-ring);
}

.btn-primary {
    background-color: var(--color-red-institutional);
    color: var(--color-white);
}

.btn-primary:hover {
    background-color: var(--color-red-deep);
    color: var(--color-white);
    transform: translateY(-1px);
    box-shadow: var(--box-shadow-hover);
}

.btn-secondary {
    background-color: transparent;
    color: var(--color-grafite);
    border: 1.5px solid var(--color-border);
}

.btn-secondary:hover {
    border-color: var(--color-red-institutional);
    color: var(--color-red-institutional);
    transform: translateY(-1px);
}

.btn-outline {
    background-color: transparent;
    color: var(--color-red-institutional);
    border: 1.5px solid var(--color-red-institutional);
}

.btn-outline:hover {
    background-color: var(--color-red-institutional);
    color: var(--color-white);
}

.btn-large {
    padding: 18px 36px;
    font-size: 1.05rem;
}

.btn-full {
    width: 100%;
}

/* ============ HEADER ============ */
.site-header {
    position: sticky;
    top: 0;
    background-color: var(--color-white);
    border-bottom: 1px solid var(--color-border);
    z-index: 100;
    transition: box-shadow var(--transition);
}

.site-header.scrolled {
    box-shadow: 0 2px 15px rgba(0, 0, 0, 0.08);
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 72px;
}

.brand {
    display: flex;
    flex-direction: column;
    align-items: center;   /* centraliza horizontalmente os itens */
    text-align: center;    /* centraliza o texto dentro de cada item */
    line-height: 1.2;
}

.brand-name {
    font-family: var(--font-serif);
    font-weight: 700;
    font-size: 1.5rem;          /* aumentado de 1.2rem para 1.8rem */
    color: var(--color-grafite);
    letter-spacing: -0.01em;
    line-height: 1.1;           /* ajuste opcional para evitar quebra */
}

/* Símbolo da Cruz de Malta acima do nome */
.brand-symbol {
    font-size: 0.85rem;          /* tamanho pequeno */
    color: var(--color-red-institutional); /* agora é azul royal */
    line-height: 1;
    margin-bottom: 2px;         /* espaço entre o símbolo e o nome */
    display: block;             /* garante que fique em linha própria */
    text-align: center;         /* centraliza (redundante com align-items do pai) */
}

.brand-tagline {
    font-size: 0.7rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--color-red-institutional);
}

.desktop-nav ul {
    display: flex;
    gap: 32px;
    align-items: center;
}

.desktop-nav a {
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--color-grafite);
    position: relative;
}

.desktop-nav a:hover {
    color: var(--color-red-institutional);
}

.desktop-nav a::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--color-red-institutional);
    transition: width var(--transition);
}

.desktop-nav a:hover::after {
    width: 100%;
}

.desktop-nav .nav-cta {
    color: var(--color-red-institutional);
    font-weight: 600;
    border: 1.5px solid var(--color-red-institutional);
    padding: 8px 18px;
    border-radius: var(--border-radius);
    transition: all var(--transition);
}

.desktop-nav .nav-cta:hover {
    background-color: var(--color-red-institutional);
    color: var(--color-white);
}

.desktop-nav .nav-cta::after {
    display: none;
}

/* Mobile menu toggle */
.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
    z-index: 110;
}

.hamburger-line {
    width: 24px;
    height: 2px;
    background-color: var(--color-grafite);
    transition: all var(--transition);
    transform-origin: center;
}

.mobile-menu-toggle[aria-expanded="true"] .hamburger-line:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
}

.mobile-menu-toggle[aria-expanded="true"] .hamburger-line:nth-child(2) {
    opacity: 0;
}

.mobile-menu-toggle[aria-expanded="true"] .hamburger-line:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
}

/* Mobile nav */
.mobile-nav {
    display: none;
    position: absolute;
    top: 72px;
    left: 0;
    right: 0;
    background-color: var(--color-white);
    border-bottom: 1px solid var(--color-border);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    z-index: 99;
}

.mobile-nav.open {
    display: block;
    animation: fadeInDown 0.3s ease;
}

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

.mobile-nav ul {
    padding: 16px 24px;
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.mobile-nav a {
    display: block;
    padding: 14px 0;
    font-size: 1rem;
    font-weight: 500;
    color: var(--color-grafite);
    border-bottom: 1px solid var(--color-gray-light);
}

.mobile-nav a:last-child {
    border-bottom: none;
}

.mobile-nav .nav-cta {
    color: var(--color-red-institutional);
    font-weight: 600;
    margin-top: 8px;
}

/* ============ HERO ============ */
.hero {
    background-color: var(--color-off-white);
    padding: 80px 0 100px;
    border-bottom: 1px solid var(--color-border);
}

.hero-inner {
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
}

.hero-content {
    max-width: 780px;
}

.hero-title {
    font-size: clamp(2.25rem, 6vw, 3.25rem);
    margin-bottom: 24px;
    line-height: 1.2;
    color: var(--color-grafite);
}

.hero-subtitle {
    font-size: 1.15rem;
    color: var(--color-gray-medium);
    max-width: 600px;
    margin: 0 auto 32px;
    line-height: 1.7;
}

.hero-tags {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 8px;
    align-items: center;
    margin-bottom: 36px;
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--color-gray-medium);
    letter-spacing: 0.04em;
}

.hero-tags .dot {
    color: var(--color-red-pastel);
    font-size: 1.2rem;
}

.hero-ctas {
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
    justify-content: center;
}

/* ============ SECTIONS GERAIS ============ */
.section {
    padding: 80px 0;
}

/* ============ SEÇÃO PROBLEMA ============ */
.problem-section {
    background-color: var(--color-white);
}

.problem-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 12px;
    margin-bottom: 32px;
}

.problem-item {
    background-color: var(--color-off-white);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius);
    padding: 18px 20px;
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--color-grafite);
    text-align: center;
    transition: all var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
}

.problem-item:hover {
    border-color: var(--color-red-pastel);
    background-color: var(--color-red-light);
    transform: translateY(-2px);
}

.problem-message {
    text-align: center;
    font-size: 1.1rem;
    color: var(--color-gray-medium);
    max-width: 600px;
    margin: 0 auto;
    line-height: 1.8;
    font-weight: 400;
}

/* ============ SEÇÃO SOLUÇÃO ============ */
.solution-section {
    background-color: var(--color-off-white);
    border-top: 1px solid var(--color-border);
    border-bottom: 1px solid var(--color-border);
}

.solution-comparison {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
    margin-bottom: 32px;
}

.comparison-card {
    background-color: var(--color-white);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius);
    padding: 32px 28px;
    text-align: center;
    transition: all var(--transition);
}

.comparison-card.before {
    border-top: 3px solid var(--color-gray-medium);
}

.comparison-card.after {
    border-top: 3px solid var(--color-red-institutional);
    box-shadow: var(--box-shadow);
}

.comparison-label {
    display: inline-block;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    padding: 4px 14px;
    border-radius: 20px;
    margin-bottom: 16px;
}

.comparison-card.before .comparison-label {
    background-color: var(--color-gray-light);
    color: var(--color-gray-medium);
}

.comparison-card.after .comparison-label {
    background-color: var(--color-red-light);
    color: var(--color-red-institutional);
}

.comparison-card h3 {
    font-family: var(--font-sans);
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 20px;
}

.flow-diagram {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    align-items: center;
    gap: 8px;
}

.flow-node {
    display: inline-block;
    background-color: var(--color-off-white);
    border: 1px solid var(--color-border);
    border-radius: 20px;
    padding: 8px 16px;
    font-size: 0.8rem;
    font-weight: 500;
    white-space: nowrap;
}

.comparison-card.after .flow-node {
    background-color: var(--color-red-light);
    border-color: var(--color-red-pastel);
    color: var(--color-red-deep);
    font-weight: 600;
}

.flow-arrow {
    color: var(--color-gray-medium);
    font-weight: 700;
}

.solution-note {
    text-align: center;
    font-size: 1rem;
    color: var(--color-gray-medium);
    max-width: 700px;
    margin: 0 auto;
    line-height: 1.8;
}

.solution-note strong {
    color: var(--color-red-institutional);
    font-weight: 600;
}

/* ============ SEÇÃO SERVIÇOS ============ */
.services-section {
    background-color: var(--color-white);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}

.service-card {
    background-color: var(--color-off-white);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius);
    padding: 32px 24px;
    transition: all var(--transition);
    text-align: left;
}

.service-card:hover {
    border-color: var(--color-red-pastel);
    background-color: var(--color-white);
    box-shadow: var(--box-shadow-hover);
    transform: translateY(-3px);
}

.service-icon {
    color: var(--color-red-institutional);
    margin-bottom: 16px;
}

.service-card h3 {
    font-family: var(--font-sans);
    font-size: 1.05rem;
    font-weight: 600;
    margin-bottom: 10px;
    color: var(--color-grafite);
}

.service-card p {
    font-size: 0.9rem;
    color: var(--color-gray-medium);
    line-height: 1.7;
}

/* ============ SEÇÃO CASOS DE USO ============ */
.usecases-section {
    background-color: var(--color-off-white);
    border-top: 1px solid var(--color-border);
    border-bottom: 1px solid var(--color-border);
}

.usecases-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
    margin-bottom: 32px;
}

.usecase-card {
    background-color: var(--color-white);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius);
    padding: 32px 28px;
    transition: all var(--transition);
    text-align: left;
}

.usecase-card:hover {
    border-color: var(--color-red-pastel);
    box-shadow: var(--box-shadow-hover);
    transform: translateY(-3px);
}

.usecase-icon {
    color: var(--color-red-institutional);
    margin-bottom: 16px;
}

.usecase-card h3 {
    font-family: var(--font-serif);
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--color-red-deep);
    margin-bottom: 16px;
    padding-bottom: 12px;
    border-bottom: 1px solid var(--color-border);
}

.usecase-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.usecase-list li {
    position: relative;
    padding-left: 20px;
    margin-bottom: 10px;
    font-size: 0.9rem;
    color: var(--color-gray-medium);
    line-height: 1.6;
}

.usecase-list li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 8px;
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background-color: var(--color-red-pastel);
}

.usecases-note {
    text-align: center;
    font-size: 0.95rem;
    color: var(--color-gray-medium);
    max-width: 600px;
    margin: 0 auto;
    line-height: 1.7;
}

.usecases-note a {
    color: var(--color-red-institutional);
    font-weight: 600;
    text-decoration: underline;
    text-underline-offset: 3px;
    transition: color var(--transition);
}

.usecases-note a:hover {
    color: var(--color-red-deep);
}

/* Responsividade */
@media (max-width: 1024px) {
    .usecases-grid {
        grid-template-columns: 1fr;
        gap: 16px;
    }
}

/* ============ SEÇÃO COMO FUNCIONA ============ */
.process-section {
    background-color: var(--color-white);
}

.process-steps {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
    position: relative;
}

.process-step {
    text-align: center;
    padding: 0 12px;
}

.step-number {
    font-family: var(--font-serif);
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--color-red-pastel);
    line-height: 1;
    margin-bottom: 12px;
}

.process-step h3 {
    font-family: var(--font-sans);
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 8px;
    color: var(--color-grafite);
}

.process-step p {
    font-size: 0.85rem;
    color: var(--color-gray-medium);
    line-height: 1.7;
}

/* ============ SEÇÃO DIFERENCIAL ============ */
.differential-section {
    background-color: var(--color-off-white);
    border-top: 1px solid var(--color-border);
    border-bottom: 1px solid var(--color-border);
}

.differential-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}

.differential-card {
    background-color: var(--color-white);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius);
    padding: 32px 24px;
    text-align: center;
    transition: all var(--transition);
}

.differential-card:hover {
    border-color: var(--color-red-pastel);
    box-shadow: var(--box-shadow);
    transform: translateY(-3px);
}

.differential-card h3 {
    font-family: var(--font-serif);
    font-size: 1.2rem;
    font-weight: 600;
    margin-bottom: 12px;
    color: var(--color-red-deep);
}

.differential-card p {
    font-size: 0.9rem;
    color: var(--color-gray-medium);
    line-height: 1.7;
}

/* ============ SEÇÃO SOBRE ============ */
.about-section {
    background-color: var(--color-white);
}

.about-inner {
    display: flex;
    justify-content: center;
}

.about-content {
    max-width: 600px;
    text-align: center;
}

.about-text {
    font-size: 1rem;
    color: var(--color-gray-medium);
    line-height: 1.8;
    margin-bottom: 16px;
}

.about-text strong {
    color: var(--color-grafite);
    font-weight: 600;
}

.about-content .btn {
    margin-top: 16px;
}

/* ============ CTA FINAL ============ */
.final-cta-section {
    background-color: var(--color-red-deep);
    padding: 60px 0;
    border-bottom: 1px solid rgba(255,255,255,0.1);
}

.final-cta-inner {
    text-align: center;
    max-width: 650px;
    margin: 0 auto;
}

.final-cta-title {
    color: var(--color-white);
    font-size: clamp(1.5rem, 3.5vw, 2.25rem);
    margin-bottom: 8px;
}

.final-cta-subtitle {
    color: var(--color-blue-light);
    font-size: 1.1rem;
    margin-bottom: 28px;
}

.final-cta-section .btn-primary {
    background-color: var(--color-white);
    color: var(--color-red-deep);
}

.final-cta-section .btn-primary:hover {
    background-color: var(--color-off-white);
    color: var(--color-red-deep);
}

/* ============ SEÇÃO FORMULÁRIO ============ */
.form-section {
    background-color: var(--color-white);
    padding-bottom: 100px;
}

.form-container {
    max-width: 680px;
}

.contact-form {
    background-color: var(--color-off-white);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius);
    padding: 40px;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    margin-bottom: 20px;
}

.form-group {
    margin-bottom: 20px;
}

.form-group:last-child {
    margin-bottom: 0;
}

.form-group label {
    display: block;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--color-grafite);
    margin-bottom: 6px;
}

.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;
    padding: 14px 16px;
    font-family: var(--font-sans);
    font-size: 0.95rem;
    color: var(--color-grafite);
    background-color: var(--color-white);
    border: 1.5px solid var(--color-border);
    border-radius: var(--border-radius);
    transition: all var(--transition);
    appearance: none;
    -webkit-appearance: none;
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--color-red-institutional);
    box-shadow: var(--focus-ring);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: #A0A8B5;
}

.form-group textarea {
    resize: vertical;
    min-height: 120px;
}

.form-group select {
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%237A7A7A' stroke-width='2'%3E%3Cpolyline points='6 9 12 15 18 9'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 16px center;
    cursor: pointer;
}

.form-note {
    margin-top: 16px;
    font-size: 0.8rem;
    color: var(--color-gray-medium);
    text-align: center;
}

/* ============ FOOTER ============ */
.site-footer {
    background-color: var(--color-grafite);
    color: rgba(255, 255, 255, 0.8);
    padding: 48px 0 0;
}

.footer-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 24px;
    padding-bottom: 32px;
}

.footer-brand {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.footer-name {
    font-family: var(--font-serif);
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--color-white);
}

.footer-tags {
    font-size: 0.75rem;
    letter-spacing: 0.06em;
    color: rgba(255, 255, 255, 0.6);
    text-transform: uppercase;
}

.footer-links {
    display: flex;
    gap: 24px;
    align-items: center;
}

.footer-links a {
    color: rgba(255, 255, 255, 0.7);
    font-size: 0.9rem;
    font-weight: 500;
    transition: color var(--transition);
    display: flex;
    align-items: center;
    gap: 6px;
}

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

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.15);
    padding: 20px 0;
    text-align: center;
}

.footer-bottom p {
    font-size: 0.8rem;
    color: rgba(255, 255, 255, 0.5);
}

/* ============ RESPONSIVIDADE ============ */
@media (max-width: 1024px) {
    .services-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .demo-card {
        grid-template-columns: 1fr;
        gap: 28px;
    }
    
    .demo-video {
        order: 1;
    }
    
    .demo-info {
        order: 2;
    }
    
    .process-steps {
        grid-template-columns: repeat(2, 1fr);
        gap: 32px;
    }
}

@media (max-width: 768px) {
    .container {
        padding: 0 16px;
    }
    
    .section {
        padding: 60px 0;
    }
    
    .section-header {
        margin-bottom: 32px;
    }
    
    /* Header */
    .desktop-nav {
        display: none;
    }
    
    .mobile-menu-toggle {
        display: flex;
    }
    
    /* Hero */
    .hero {
        padding: 60px 0 70px;
    }
    
    .hero-ctas {
        flex-direction: column;
        align-items: stretch;
    }
    
    .hero-ctas .btn {
        width: 100%;
    }
    
    /* Problem grid */
    .problem-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 8px;
    }
    
    .problem-item {
        font-size: 0.8rem;
        padding: 14px;
    }
    
    /* Solution */
    .solution-comparison {
        grid-template-columns: 1fr;
    }
    
    /* Services */
    .services-grid {
        grid-template-columns: 1fr;
    }
    
    /* Demos */
    .demo-card {
        padding: 24px 20px;
    }
    
    /* Process */
    .process-steps {
        grid-template-columns: 1fr;
        gap: 28px;
    }
    
    /* Differential */
    .differential-grid {
        grid-template-columns: 1fr;
    }
    
    /* Form */
    .contact-form {
        padding: 24px 20px;
    }
    
    .form-row {
        grid-template-columns: 1fr;
        gap: 0;
    }
    
    /* Footer */
    .footer-inner {
        flex-direction: column;
        text-align: center;
    }
    
    .footer-links {
        flex-wrap: wrap;
        justify-content: center;
    }
}

@media (max-width: 480px) {
    .problem-grid {
        grid-template-columns: 1fr;
    }
    
    .hero-title {
        font-size: 1.75rem;
    }
    
    .hero-subtitle {
        font-size: 1rem;
    }
    
    .section-title {
        font-size: 1.5rem;
    }
    
    .demo-number {
        font-size: 2.25rem;
    }
    
    .video-placeholder {
        aspect-ratio: 4/3;
    }
    
    .final-cta-section {
        padding: 48px 0;
    }
}

/* ============ ACESSIBILIDADE ============ */
@media (prefers-reduced-motion: reduce) {
    html {
        scroll-behavior: auto;
    }
    
    *,
    *::before,
    *::after {
        transition-duration: 0.01ms !important;
        animation-duration: 0.01ms !important;
    }
}

/* Skip link para acessibilidade por teclado */
.skip-link {
    position: absolute;
    top: -100px;
    left: 16px;
    z-index: 999;
    background-color: var(--color-red-institutional);
    color: var(--color-white);
    padding: 12px 20px;
    border-radius: var(--border-radius);
    font-weight: 600;
    transition: top 0.2s ease;
}

.skip-link:focus {
    top: 16px;
}

/* ============ BOTÃO FLUTUANTE WHATSAPP ============ */
.whatsapp-float {
    position: fixed;
    bottom: 90px;              /* acima do selo do Netlify (~20px) */
    right: 20px;
    width: 56px;
    height: 56px;
    background-color: #25D366; /* verde oficial do WhatsApp */
    color: #FFFFFF;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 14px rgba(37, 211, 102, 0.4);
    z-index: 999;
    transition: all 0.3s ease;
    text-decoration: none;
}

.whatsapp-float:hover {
    background-color: #1EBE5A;
    transform: scale(1.08);
    box-shadow: 0 6px 20px rgba(37, 211, 102, 0.5);
    color: #FFFFFF;
}

.whatsapp-float:focus-visible {
    outline: none;
    box-shadow: 0 0 0 3px rgba(37, 211, 102, 0.4);
}

.whatsapp-float svg {
    display: block;
}

/* Ajuste para mobile */
@media (max-width: 768px) {
    .whatsapp-float {
        bottom: 80px;          /* ligeiramente mais baixo em mobile */
        right: 16px;
        width: 52px;
        height: 52px;
    }
    
    .whatsapp-float svg {
        width: 26px;
        height: 26px;
    }
}

/* ============ SEÇÃO PARCERIA NEXTCARD ============ */
.partner-section {
    background-color: var(--color-white);
    border-bottom: 1px solid var(--color-border);
}

.partner-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
    margin-bottom: 32px;
}

.partner-card {
    background-color: var(--color-off-white);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius);
    padding: 32px 28px;
    transition: all var(--transition);
    text-align: left;
}

.partner-card:hover {
    border-color: var(--color-red-pastel);
    background-color: var(--color-white);
    box-shadow: var(--box-shadow-hover);
    transform: translateY(-3px);
}

.partner-icon {
    color: var(--color-red-institutional);
    margin-bottom: 16px;
}

.partner-card h3 {
    font-family: var(--font-serif);
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--color-red-deep);
    margin-bottom: 16px;
    padding-bottom: 12px;
    border-bottom: 1px solid var(--color-border);
}

.partner-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.partner-list li {
    position: relative;
    padding-left: 20px;
    margin-bottom: 10px;
    font-size: 0.9rem;
    color: var(--color-gray-medium);
    line-height: 1.6;
}

.partner-list li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 8px;
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background-color: var(--color-red-pastel);
}

.partner-note {
    text-align: center;
    font-size: 0.95rem;
    color: var(--color-gray-medium);
    max-width: 620px;
    margin: 0 auto;
    line-height: 1.7;
}

.partner-note a {
    color: var(--color-red-institutional);
    font-weight: 600;
    text-decoration: underline;
    text-underline-offset: 3px;
    transition: color var(--transition);
}

.partner-note a:hover {
    color: var(--color-red-deep);
}

/* Responsividade */
@media (max-width: 1024px) {
    .partner-grid {
        grid-template-columns: 1fr;
        gap: 16px;
    }
}