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

.site-header .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-top: 1.5rem;
    padding-bottom: 1.5rem;
}

/* Logo -------------------------------------------------------------------- */
.logo {
    display: flex;
    flex-direction: column;
    line-height: 1.15;
}

.logo-name {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--color-dark);
    letter-spacing: -0.01em;
}

.logo-title {
    margin-top: 0.2rem;
    font-size: 0.85rem;
    font-weight: 400;
    color: var(--color-dark);
    opacity: 0.55;
}

/* Navegação ----------------------------------------------------------------- */
.main-nav {
    display: flex;
    align-items: center;
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: 2.5rem;
    list-style: none;
}

.nav-menu a {
    position: relative;
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--color-dark);
    padding: 0.25rem 0;
    transition: color 0.2s ease;
}

.nav-menu a::after {
    content: '';
    position: absolute;
    left: 0;
    bottom: -4px;
    width: 0;
    height: 2px;
    background-color: var(--color-accent);
    transition: width 0.25s ease;
}

.nav-menu a:hover,
.nav-menu a:focus-visible {
    color: var(--color-primary);
}

.nav-menu a:hover::after,
.nav-menu a:focus-visible::after {
    width: 100%;
}

.nav-cta {
    background-color: var(--color-primary);
    color: var(--color-white) !important;
    padding: 0.7rem 1.5rem;
    border-radius: 999px;
    font-weight: 600;
    transition: background-color 0.2s ease, transform 0.2s ease;
}

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

.nav-cta:hover,
.nav-cta:focus-visible {
    background-color: var(--color-dark);
    transform: translateY(-1px);
}

/* Botão hamburguer (mobile) ------------------------------------------------ */
.nav-toggle {
    display: none;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    width: 32px;
    height: 32px;
    background: none;
    border: none;
    padding: 0;
}

.nav-toggle span {
    display: block;
    width: 100%;
    height: 2px;
    background-color: var(--color-dark);
    transition: transform 0.25s ease, opacity 0.25s ease;
}

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

.nav-toggle[aria-expanded="true"] span:nth-child(2) {
    opacity: 0;
}

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

/* Responsivo ---------------------------------------------------------------- */
@media (max-width: 768px) {
    .nav-toggle {
        display: flex;
    }

    .nav-menu {
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        flex-direction: column;
        align-items: flex-start;
        gap: 0;
        background-color: var(--color-white);
        border-bottom: 1px solid var(--color-bg-soft);
        max-height: 0;
        overflow: hidden;
        transition: max-height 0.3s ease;
    }

    .nav-menu.is-open {
        max-height: 320px;
    }

    .nav-menu li {
        width: 100%;
    }

    .nav-menu a {
        display: block;
        width: 100%;
        padding: 0.9rem var(--spacing-lg);
    }

    .nav-menu a::after {
        display: none;
    }
}