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

:root {
    --bg: #ffffff;
    --bg-sec: #f5f5f7;
    --texto: #121212;
    --texto-suave: #555;
    --primaria: #3b5bff;
    --primaria-escura: #2738b8;
    --card-bg: #ffffff;
    --borda-suave: #e2e2ea;
}

/* DARK MODE VARS */
body.dark-mode {
    --bg: #050711;
    --bg-sec: #101223;
    --texto: #f5f5ff;
    --texto-suave: #c3c3dd;
    --primaria: #7b8cff;
    --primaria-escura: #5461f0;
    --card-bg: #15172a;
    --borda-suave: #26283b;
}

/* BASE BODY */
body {
    font-family: "Inter", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    background: var(--bg);
    color: var(--texto);
    line-height: 1.6;
    transition: background 0.3s ease, color 0.3s ease;
}

/* TOPO / NAV */
.topo {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 18px 7%;
    border-bottom: 1px solid var(--borda-suave);
    position: sticky;
    top: 0;
    z-index: 50;
    backdrop-filter: blur(18px);
    background: color-mix(in srgb, var(--bg) 85%, transparent);
}

.logo {
    display: flex;
    flex-direction: column;
}

.logo-marca {
    font-weight: 800;
    letter-spacing: 1.5px;
    font-size: 18px;
}

.logo-sub {
    font-size: 12px;
    color: var(--texto-suave);
}

.menu {
    display: flex;
    gap: 18px;
}

.menu a {
    text-decoration: none;
    color: var(--texto-suave);
    font-size: 14px;
    transition: color 0.2s ease, transform 0.2s ease;
}

.menu a:hover {
    color: var(--primaria);
    transform: translateY(-1px);
}

/* BOTÃO TEMA */
.toggle-tema {
    border: 1px solid var(--borda-suave);
    background: var(--card-bg);
    color: var(--texto);
    padding: 6px 12px;
    border-radius: 999px;
    cursor: pointer;
    font-size: 13px;
    display: flex;
    align-items: center;
    gap: 6px;
    transition: background 0.2s ease, transform 0.2s ease;
}

.toggle-tema:hover {
    transform: translateY(-1px);
}

/* HERO */
.hero {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 70px 7%;
    gap: 50px;
}

.hero-texto {
    flex: 1.3;
}

.hero-texto h1 {
    font-size: 40px;
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: 16px;
}

.hero-sub {
    font-size: 16px;
    color: var(--texto-suave);
    margin-bottom: 16px;
}

.hero-lista {
    list-style: none;
    margin-bottom: 24px;
}

.hero-lista li {
    margin-bottom: 8px;
    font-size: 14px;
}

.hero-garantia {
    font-size: 13px;
    color: var(--texto-suave);
    margin-top: 10px;
}

/* BOTÃO CTA */
.botao-cta {
    display: inline-block;
    padding: 14px 26px;
    border-radius: 999px;
    background: var(--primaria);
    color: #fff;
    font-weight: 600;
    text-decoration: none;
    font-size: 15px;
    box-shadow: 0 14px 30px rgba(59, 91, 255, 0.35);
    transition: background 0.2s ease, transform 0.2s ease, box-shadow 0.2s ease;
}

.botao-cta:hover {
    background: var(--primaria-escura);
    transform: translateY(-3px);
    box-shadow: 0 20px 40px rgba(59, 91, 255, 0.45);
}

.botao-grande {
    padding: 16px 40px;
    font-size: 17px;
}

/* HERO EBOOK 3D */
.hero-ebook {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.ebook-wrapper {
    width: 320px;
    height: 420px;
    perspective: 1100px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.ebook-img {
    width: 100%;
    border-radius: 18px;
    box-shadow: 0 30px 60px rgba(0, 0, 0, 0.35);
    transform: rotateY(-15deg) rotateX(10deg);
    transform-style: preserve-3d;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.hero-selo {
    margin-top: 14px;
    font-size: 13px;
    color: var(--texto-suave);
}

/* SEÇÕES GERAIS */
section {
    padding: 60px 7%;
}

.sobre {
    background: var(--bg-sec);
    border-top: 1px solid var(--borda-suave);
    border-bottom: 1px solid var(--borda-suave);
}

.sobre-texto h2 {
    font-size: 28px;
    margin-bottom: 16px;
}

.sobre-texto p {
    margin-bottom: 10px;
    color: var(--texto-suave);
}

/* BENEFÍCIOS */
.beneficios h2 {
    text-align: center;
    font-size: 28px;
    margin-bottom: 30px;
}

.cards {
    display: grid;
    gap: 20px;
    grid-template-columns: repeat(4, minmax(0, 1fr));
}

.card {
    background: var(--card-bg);
    border-radius: 16px;
    padding: 20px;
    border: 1px solid var(--borda-suave);
    box-shadow: 0 12px 30px rgba(0, 0, 0, 0.05);
    transition: transform 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease;
}

.card h3 {
    font-size: 16px;
    margin-bottom: 8px;
}

.card p {
    font-size: 14px;
    color: var(--texto-suave);
}

.card:hover {
    transform: translateY(-6px) scale(1.01);
    box-shadow: 0 18px 40px rgba(0, 0, 0, 0.08);
    border-color: var(--primaria);
}

/* VÍDEO */
.video-section {
    text-align: center;
}

.video-section h2 {
    font-size: 26px;
    margin-bottom: 10px;
}

.video-section p {
    color: var(--texto-suave);
    margin-bottom: 20px;
}

.video-wrapper {
    position: relative;
    max-width: 820px;
    margin: 0 auto;
    padding-bottom: 56.25%;
    height: 0;
    border-radius: 18px;
    overflow: hidden;
    box-shadow: 0 18px 40px rgba(0, 0, 0, 0.25);
}

.video-wrapper iframe {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
}

/* CONTEÚDO */
.conteudo h2 {
    text-align: center;
    margin-bottom: 30px;
}

.grid-conteudo {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 24px;
}

.bloco {
    background: var(--card-bg);
    border-radius: 16px;
    padding: 20px;
    border: 1px solid var(--borda-suave);
}

.bloco h3 {
    font-size: 16px;
    margin-bottom: 10px;
}

.bloco ul {
    list-style: disc;
    padding-left: 18px;
    color: var(--texto-suave);
    font-size: 14px;
}

/* PARA QUEM É */
.para-quem h2 {
    text-align: center;
    margin-bottom: 25px;
}

.para-quem-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 22px;
}

.para-quem-item {
    background: var(--card-bg);
    border-radius: 14px;
    padding: 18px;
    border: 1px solid var(--borda-suave);
}

.para-quem-item h3 {
    font-size: 15px;
    margin-bottom: 8px;
}

/* OFERTA */
.oferta {
    display: grid;
    grid-template-columns: minmax(0, 2fr) minmax(0, 1.2fr);
    gap: 30px;
    align-items: center;
    background: var(--bg-sec);
    border-top: 1px solid var(--borda-suave);
    border-bottom: 1px solid var(--borda-suave);
}

.oferta-conteudo h2 {
    font-size: 26px;
    margin-bottom: 10px;
}

.oferta-sub {
    color: var(--texto-suave);
    margin-bottom: 20px;
}

.oferta-box {
    background: var(--card-bg);
    border-radius: 18px;
    padding: 22px;
    border: 1px solid var(--borda-suave);
}

.precos {
    margin-bottom: 16px;
}

.preco-antigo {
    font-size: 16px;
    text-decoration: line-through;
    color: var(--texto-suave);
}

.preco-novo {
    font-size: 32px;
    font-weight: 800;
    color: var(--primaria);
}

.oferta-info {
    font-size: 13px;
    color: var(--texto-suave);
    margin-top: 8px;
}

.garantia {
    font-size: 13px;
    margin-top: 14px;
    color: var(--texto-suave);
}

.oferta-lateral .lista-check {
    list-style: none;
    font-size: 14px;
    color: var(--texto-suave);
}

.oferta-lateral li {
    margin-bottom: 8px;
}

/* FOOTER */
footer {
    text-align: center;
    padding: 30px 7%;
    font-size: 13px;
    color: var(--texto-suave);
    border-top: 1px solid var(--borda-suave);
    margin-top: 40px;
}

/* EFEITO REVEAL */
.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.reveal.visible {
    opacity: 1;
    transform: translateY(0);
}

/* RESPONSIVO */
@media (max-width: 1024px) {
    .hero {
        flex-direction: column;
        padding-top: 40px;
    }

    .hero-texto h1 {
        font-size: 32px;
    }

    .cards {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .oferta {
        grid-template-columns: 1fr;
    }

    .para-quem-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
}

@media (max-width: 768px) {
    .topo {
        flex-wrap: wrap;
        gap: 10px;
    }

    .menu {
        display: none; /* se quiser, pode depois transformar em hambúrguer */
    }

    section {
        padding: 40px 6%;
    }

    .cards {
        grid-template-columns: 1fr;
    }

    .grid-conteudo {
        grid-template-columns: 1fr;
    }

    .para-quem-grid {
        grid-template-columns: 1fr;
    }

    .ebook-wrapper {
        width: 260px;
        height: 340px;
    }
}