:root {
    --azul: #2A72AB;
    --azul-escuro: #194467;
    --verde: #1A9447;
    --verde-escuro: #1A9447;
    --laranja: #1A9447;
    --rosa: #D71A66;
    --fundo: #f3f4f6;
    --texto: #1f2937;
    --texto-claro: #4b5563;
    --branco: #ffffff;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    background: var(--fundo);
    color: var(--texto);
    line-height: 1.6;
}

.container {
    max-width: 1080px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

header {
    background: var(--branco);
    padding: .75rem 0;
    border-bottom: 3px solid var(--azul-escuro);
    position: sticky;
    top: 0;
    z-index: 10;
}

.nav {
    display: grid;
    grid-template-columns: auto 1fr auto;
    align-items: center;
    gap: 2rem;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 1.5rem;
    color: var(--azul);
}

.logo img {
    height: 52px;
}

.logo strong {
    color: var(--azul-escuro);
}

nav {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 1.5rem;
}

nav a {
    color: var(--texto-claro);
    text-decoration: none;
    font-weight: 500;
    transition: color .2s;
    white-space: nowrap;
}

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

/* Botão de destaque — desktop (esquerda do header) */
.btn-painel {
    display: inline-block;
    background: var(--azul-escuro);
    color: var(--branco) !important;
    padding: .65rem 1.4rem;
    border-radius: 6px;
    font-weight: 700;
    font-size: .95rem;
    text-decoration: none;
    white-space: nowrap;
    transition: background .2s, transform .15s;
    box-shadow: 0 2px 8px rgba(25, 68, 103, .35);
}

.btn-painel:hover {
    background: var(--azul);
    transform: translateY(-1px);
}

/* Versão mobile do botão (dentro do dropdown nav) */
.btn-painel-nav {
    display: none;
    background: var(--azul-escuro);
    color: var(--branco) !important;
    padding: .5rem .9rem;
    border-radius: 6px;
    font-weight: 700;
    text-decoration: none;
    text-align: center;
}

.hero {
    padding: 5rem 0 4rem;
    text-align: center;
}

.hero h1 {
    font-size: 2.5rem;
    line-height: 1.2;
    margin-bottom: 1rem;
    color: var(--azul-escuro);
}

.hero p {
    font-size: 1.2rem;
    color: var(--texto-claro);
    max-width: 600px;
    margin: 0 auto;
}

.azul   { color: var(--azul); }
.laranja{ color: var(--laranja); }
.rosa   { color: var(--rosa); }

.section {
    padding: 4rem 0;
}

.section-alt {
    background: var(--branco);
}

.section h2 {
    font-size: 2rem;
    margin-bottom: 1.5rem;
    color: var(--azul-escuro);
}

.section p {
    color: var(--texto-claro);
    max-width: 720px;
}

.cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 1.5rem;
    margin-top: 2rem;
}

.card {
    background: var(--fundo);
    padding: 1.5rem;
    border-radius: 8px;
    border-top: 4px solid;
}

.border-azul    { border-color: var(--azul); }
.border-laranja { border-color: var(--laranja); }
.border-rosa    { border-color: var(--rosa); }

/* Todos os cards de "O que ele faz" usam verde */
#produto .card  { border-top-color: var(--laranja); }

.card h3 {
    font-size: 1.3rem;
    margin-bottom: .5rem;
    color: var(--azul-escuro);
}

.card p {
    color: var(--texto-claro);
    font-size: .95rem;
}

.card-link {
    text-decoration: none;
    color: inherit;
    display: block;
}

.card-link .card {
    transition: transform .15s, box-shadow .15s;
}

.card-link:hover .card {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0,0,0,.08);
}

.card-cta {
    display: inline-block;
    margin-top: .8rem;
    font-size: .9rem;
    color: var(--azul);
    font-weight: 500;
}

a {
    color: var(--azul);
}

.hero .lead {
    font-size: 1.2rem;
    color: var(--texto-claro);
    max-width: 600px;
    margin: 0 auto 2rem;
}

.btn-cta-hero {
    font-size: 1.05rem;
    padding: 1rem 2.5rem;
}

.wa-icon {
    width: 18px;
    height: 18px;
    vertical-align: middle;
    margin-right: .4rem;
    margin-top: -2px;
}

/* ================================
   Diagrama de arquitetura
   ================================ */
.arq-grid {
    display: grid;
    grid-template-columns: 1fr 3rem 1fr 3rem 1fr;
    grid-template-rows: auto auto auto;
    align-items: center;
    justify-items: center;
    margin: 2.5rem auto 1.5rem;
    max-width: 720px;
}

.arq-node {
    background: var(--branco);
    border: 2px solid var(--azul);
    border-radius: 10px;
    padding: 1.25rem 1rem;
    text-align: center;
    width: 100%;
}

.arq-node strong {
    display: block;
    font-size: .95rem;
    color: var(--texto);
    margin-bottom: .2rem;
}

.arq-node span {
    font-size: .8rem;
    color: var(--texto-claro);
}

.arq-node-icon {
    width: 28px;
    height: 28px;
    margin-bottom: .4rem;
}

.arq-node-wa  { grid-column: 1; grid-row: 1; border-color: var(--verde); }
.arq-arr-1    { grid-column: 2; grid-row: 1; font-size: 1.5rem; color: var(--verde); }
.arq-node-z1  { grid-column: 3; grid-row: 1; border-color: var(--verde-escuro); border-width: 3px; }
.arq-arr-2    { grid-column: 4; grid-row: 1; font-size: 1.5rem; color: var(--verde); }
.arq-node-ai  { grid-column: 5; grid-row: 1; border-color: var(--verde); }
.arq-v-conn   { grid-column: 3; grid-row: 2; font-size: 1.4rem; color: var(--verde); padding: .25rem 0; }
.arq-node-human { grid-column: 3; grid-row: 3; border-color: var(--verde); }

@media (max-width: 640px) {
    .arq-grid {
        grid-template-columns: 1fr;
        max-width: 260px;
    }
    .arq-node-wa, .arq-arr-1, .arq-node-z1,
    .arq-arr-2, .arq-node-ai, .arq-v-conn, .arq-node-human {
        grid-column: 1 !important;
        grid-row: auto !important;
    }
    .arq-arr-1, .arq-arr-2 { font-size: 1rem; padding: .2rem 0; transform: rotate(90deg); }
    .arq-v-conn { font-size: 1rem; padding: .2rem 0; }
}

.steps {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 1.5rem;
    margin-top: 2rem;
}

.step {
    background: var(--fundo);
    padding: 1.5rem;
    border-radius: 8px;
    position: relative;
}

.step-num {
    background: var(--verde);
    color: var(--branco);
    width: 36px;
    height: 36px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
    margin-bottom: 1rem;
}

.step h3 {
    margin-bottom: .5rem;
    color: var(--azul-escuro);
}

.step p {
    color: var(--texto-claro);
    font-size: .95rem;
}

.features {
    list-style: none;
    padding: 0;
    margin-top: 1rem;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: .75rem;
}

.features li {
    padding: .75rem 1rem;
    background: var(--fundo);
    border-radius: 4px;
    border-left: 3px solid var(--verde);
    color: var(--texto-claro);
}

.analyses {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 1.5rem;
    margin-top: 2rem;
}

.analysis {
    background: var(--branco);
    padding: 1.5rem;
    border-radius: 8px;
    border-top: 4px solid;
    box-shadow: 0 2px 6px rgba(0,0,0,.04);
}

.analysis h3 {
    margin-bottom: .25rem;
    color: var(--azul-escuro);
}

.analysis-sub {
    font-size: .85rem;
    color: var(--texto-claro);
    margin-bottom: 1rem;
}

.analysis ul {
    list-style: none;
    padding: 0;
}

.analysis li {
    padding: .4rem 0;
    border-bottom: 1px solid var(--fundo);
    color: var(--texto-claro);
    font-size: .9rem;
}

.analysis li:last-child {
    border-bottom: none;
}

.analysis li strong {
    color: var(--texto);
}

.cta {
    text-align: center;
}

.btn-cta {
    display: inline-block;
    background: var(--verde-escuro);
    color: var(--branco) !important;
    padding: .8rem 2rem;
    border-radius: 4px;
    font-weight: 500;
    text-decoration: none;
    margin-top: 1rem;
    transition: background .2s;
}

.btn-cta:hover {
    background: #157039;
}

.hero-actions {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 1rem;
    max-width: 680px;
    margin: 2rem auto 0;
}

.hero-actions .btn-cta {
    text-align: center;
    margin-top: 0;
    width: 100%;
}

.btn-cta-outline {
    display: inline-flex;
    align-items: center;
    gap: .4rem;
    background: var(--verde);
    color: var(--branco) !important;
    padding: 1rem 2.5rem;
    border-radius: 4px;
    font-weight: 600;
    text-decoration: none;
    font-size: 1.05rem;
    border: none;
    transition: background .2s;
}

.btn-cta-outline:hover {
    background: #157039;
}

/* Mid-page CTA block */
.section-cta-mid {
    background: var(--azul-escuro);
    padding: 3rem 0;
    text-align: center;
}

.section-cta-mid h2 {
    color: var(--branco);
    font-size: 2rem;
    margin-bottom: .75rem;
}

.section-cta-mid p {
    color: rgba(255,255,255,.8);
    max-width: 600px;
    margin: 0 auto 1.5rem;
    font-size: 1.1rem;
}

.btn-cta-mid {
    display: inline-block;
    background: var(--verde);
    color: var(--branco) !important;
    padding: .85rem 2.25rem;
    border-radius: 6px;
    font-weight: 700;
    text-decoration: none;
    font-size: 1.05rem;
    transition: background .2s;
}

.btn-cta-mid:hover {
    background: #157039;
}

/* Mobile auth links (hidden on desktop) */
.nav-mobile-links {
    display: none;
}

footer {
    background: var(--azul-escuro);
    color: var(--branco);
    padding: 1.5rem 0;
    text-align: center;
    font-size: .9rem;
    margin-top: 3rem;
}

footer p {
    opacity: .8;
}

.menu-toggle {
    display: none;
    background: none;
    border: none;
    color: var(--azul);
    font-size: 1.8rem;
    cursor: pointer;
    padding: 0;
}

@media (max-width: 768px) {
    /* Mobile: logo esquerda, hamburger direita */
    .nav {
        display: flex;
        justify-content: space-between;
        position: relative;
    }

    /* Esconder botão do header no mobile */
    .btn-painel { display: none; }

    /* Logo vai para a esquerda automaticamente (1º elemento visível) */
    .logo { order: -1; }

    .menu-toggle {
        display: block;
        order: 10;
    }

    nav {
        display: none;
        position: absolute;
        top: 100%;
        right: 0;
        background: var(--branco);
        border: 1px solid #e5e7eb;
        border-radius: 6px;
        padding: .5rem;
        margin-top: .5rem;
        box-shadow: 0 4px 12px rgba(0,0,0,.08);
        min-width: 210px;
        z-index: 100;
        flex-direction: column;
        gap: .25rem;
    }

    nav.open { display: flex; }

    nav a {
        padding: .5rem .75rem;
        border-radius: 4px;
    }

    nav a:hover { background: var(--fundo); }

    /* Mostrar botão dentro do dropdown no mobile */
    .btn-painel-nav {
        display: block;
        margin-top: .25rem;
    }

    /* Links Registre-se / Entrar visíveis entre logo e hamburger */
    .nav-mobile-links {
        display: flex;
        position: absolute;
        top: 0;
        bottom: 0;
        right: 4rem;
        align-items: center;
        gap: .55rem;
    }

    .nav-mobile-links a {
        background: var(--azul-escuro);
        color: var(--branco) !important;
        padding: .3rem .75rem;
        border-radius: 5px;
        font-size: .78rem;
        font-weight: 700;
        text-decoration: none;
        white-space: nowrap;
    }
}

@media (max-width: 640px) {
    .hero h1 { font-size: 1.8rem; }
    .hero .lead { font-size: 1rem; }
    .section { padding: 2.5rem 0; }
    .section h2 { font-size: 1.5rem; }
    .container { padding: 0 1rem; }
    .hero-actions { grid-template-columns: 1fr; }
}