/* =========================
   RESET E BASE
========================= */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: "Inter", system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
    color: #0f172a;
    background-color: #ffffff;
    line-height: 1.6;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

main {
    flex: 1;
}

/* =========================
   CONTAINERS
========================= */
.container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 24px;
}

.container.narrow {
    max-width: 700px;
}

/* =========================
   TIPOGRAFIA
========================= */
h1 {
    font-size: 3rem;
    line-height: 1.15;
    margin-bottom: 1rem;
}

h2 {
    font-size: 1.75rem;
    margin-top: 4rem;
    margin-bottom: 1rem;
}

p {
    font-size: 1rem;
    line-height: 1.7;
    color: #334155;
    margin-bottom: 1.25rem;
}

.subtitle {
    font-size: 1.125rem;
    color: #475569;
    margin-bottom: 2.5rem;
}

/* =========================
   LINKS E BOTÕES
========================= */
a {
    text-decoration: none;
    color: inherit;
}

.btn-primary,
.btn-secondary {
    display: inline-block;
    margin-top: 32px;
    padding: 14px 28px;
    border-radius: 2px;
    font-weight: 500;
}

.btn-primary {
    background: #1f2a44;
    color: #ffffff;
}

.btn-secondary {
    border: 1px solid #1f2a44;
    color: #1f2a44;
}

/* =========================
   HEADER / NAV
========================= */
.site-header {
    border-bottom: 1px solid #e5e7eb;
    background: #ffffff;
    position: relative;
    z-index: 10;
}

.header-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 64px;
}

.logo {
    font-weight: 700;
    font-size: 1.2rem;
}

.nav {
    display: flex;
    gap: 24px;
}

.nav a {
    font-size: 0.95rem;
    color: #374151;
}

.nav a.active {
    font-weight: 600;
}

.cta {
    padding: 10px 18px;
    border: 1px solid #1f2a44;
    color: #1f2a44;
    font-weight: 500;
}

/* Botão menu mobile */
.menu-toggle {
    display: none;
    background: none;
    border: none;
    font-size: 24px;
    cursor: pointer;
}

/* =========================
   HERO / SEÇÕES
========================= */
.hero {
    padding: 120px 0;
}

.hero.small {
    padding: 80px 0;
}

.hero h1 {
    max-width: 700px;
}

.hero p {
    margin-top: 24px;
    max-width: 600px;
    font-size: 1.1rem;
}

.manifesto {
    padding: 100px 0;
    background: #f9fafb;
}

.content,
.product-highlight,
.principles {
    padding: 100px 0;
}

/* =========================
   PRINCÍPIOS
========================= */
.principle-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 40px;
    margin-top: 40px;
}

.principle-list {
    margin-top: 24px;
}

.principle-list li {
    margin-bottom: 12px;
}

/* =========================
NAVEGAÇÃO DE PRODUTOS
========================= */
.product-nav ul {
    list-style: none;
    padding: 0;
    margin-top: 2rem;
}

.product-nav li {
    margin-bottom: 1.5rem;
}

.product-nav a {
    display: block;
    padding: 1rem;
    border: 1px solid #e5e7eb;
    border-radius: 4px;
}

.product-nav a:hover {
    background: #f9fafb;
}

.product-breadcrumb {
    padding: 1.5rem 0;
    font-size: 0.9rem;
}

.product-next {
    margin-top: 4rem;
    font-weight: 500;
}

.product-navigation {
    margin-top: 4rem;
}

.product-next a {
    font-size: 0.95rem;
    font-weight: 500;
    color: #1f2a44;
}


/* =========================
   FOOTER
========================= */
.site-footer {
    margin-top: 64px;
    padding: 32px 16px;
    text-align: center;
    font-size: 14px;
    color: #555;
}

/* =========================
   MOBILE
========================= */
@media (max-width: 768px) {
    body {
        font-size: 16px;
    }

    .container {
        padding: 0 16px;
    }

    .header-content {
        flex-wrap: wrap;
        height: auto;
        padding: 16px 0;
    }

    h1 {
        font-size: 2.1rem;
        line-height: 1.2;
    }

    h2 {
        font-size: 1.4rem;
    }

    .subtitle {
        font-size: 1rem;
        margin-bottom: 2rem;
    }

    p {
        font-size: 0.95rem;
    }

    .logo {
        order: 1;
        margin-left: 16px;
    }

    .menu-toggle {
        display: block;
        order: 2;
        margin-right: 16px
    }

    .nav {
        width: 100%;
        display: none;
        flex-direction: column;
        gap: 16px;
        margin-top: 16px;
        padding-top: 16px;
        border-top: 1px solid #e5e7eb;
        background: #ffffff;
        order: 3;
        position: absolute;
        top: 48px;
        left: 0;
        right: 0;
        border-bottom: 1px solid #e5e7eb;
        padding: 24px 16px;
    }

    .nav.active {
        display: flex;
    }

    .cta {
        display: none;
    }

    section {
        margin-bottom: 3.5rem;
    }


    .product-navigation {
        margin-top: 3rem;
    }


}

@media (max-width: 400px) {
    h1 {
        font-size: 1.9rem;
        line-height: 1.2;
    }

    h2 {
        font-size: 1.3rem;
        margin-top: 2.5rem;
        margin-bottom: 0.75rem;
    }

    p {
        font-size: 0.95rem;
        line-height: 1.65;
    }

    .hero {
        padding: 64px 0;
    }

    .content,
    .principles {
        padding: 64px 0;
    }

    .principle-list {
        margin-top: 16px;
        padding-left: 16px;
    }

    .principle-list li {
        margin-bottom: 10px;
        font-size: 0.95rem;
    }
}