/* ==========================================================================
   Header — Nav flutuante (fluid desktop, single mobile breakpoint)
   ========================================================================== */

.site-header {
    position: sticky;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    transition: box-shadow var(--transition-base);
}

.site-header--scrolled {
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
}

.nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: clamp(10px, calc(7.71px + 0.22vw), 12px) clamp(20px, calc(-2.86px + 2.23vw), 40px);
    background-color: var(--color-bg);
}

/* Logo */
.nav__logo {
    flex-shrink: 0;
    display: flex;
    align-items: center;
}

.nav__logo img {
    width: var(--nav-logo-w);
    height: auto;
}

/* Menu (centralizado) */
.nav__menu {
    display: flex;
    align-items: center;
    gap: clamp(14px, calc(-6.57px + 2.01vw), 32px);
}

.nav__link {
    font-family: var(--font-body);
    font-size: clamp(14px, calc(11.71px + 0.22vw), 16px);
    font-weight: 500;
    line-height: 22px;
    letter-spacing: -0.01em;
    color: #475580;
    transition: color var(--transition-fast);
    white-space: nowrap;
}

.nav__link:hover {
    color: var(--color-dark);
}

.nav__link--active {
    color: var(--color-dark);
    text-decoration: underline;
    text-underline-offset: 4px;
    text-decoration-thickness: 1px;
}

/* CTA Buttons */
.nav__actions--mobile {
    display: none;
}

.nav__actions {
    display: flex;
    align-items: center;
    gap: clamp(6px, 0.5vw, 10px);
    flex-shrink: 0;
}

.nav__btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: clamp(8px, 0.55vw, 10px) clamp(16px, calc(5.71px + 0.89vw), 24px);
    font-family: var(--font-body);
    font-size: clamp(13px, calc(11.57px + 0.18vw), 15px);
    font-weight: 500;
    line-height: 150%;
    letter-spacing: -0.005em;
    border-radius: clamp(24px, 2vw, 32px);
    transition: all var(--transition-fast);
    white-space: nowrap;
}

.nav__btn--outline {
    color: #203754;
    background: var(--color-white);
    border: 1px solid #E9EAEB;
}

.nav__btn--outline:hover {
    background-color: #F5F5F5;
    border-color: #D0D1D3;
}

.nav__btn--filled {
    color: var(--color-white);
    background-color: var(--color-button);
    border: 1px solid var(--color-button);
}

.nav__btn--filled:hover {
    background-color: #6E7CB0;
}

.nav__btn-icon {
    width: clamp(18px, calc(15.71px + 0.22vw), 20px);
    height: clamp(18px, calc(15.71px + 0.22vw), 20px);
    flex-shrink: 0;
}

/* Hamburger */
.nav__toggle {
    display: none;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    width: 32px;
    height: 32px;
    cursor: pointer;
}

.nav__toggle-bar {
    display: block;
    width: 24px;
    height: 2px;
    background-color: var(--color-dark);
    border-radius: 2px;
    transition: transform var(--transition-base), opacity var(--transition-base);
}

.nav__toggle--open .nav__toggle-bar:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
}

.nav__toggle--open .nav__toggle-bar:nth-child(2) {
    opacity: 0;
}

.nav__toggle--open .nav__toggle-bar:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
}

/* ===== Tablet + Mobile — drawer lateral ===== */

@media (max-width: 768px) {
    .nav {
        padding: 10px 20px;
        border-radius: 0;
        margin: 0;
    }

    .nav__toggle {
        display: flex;
    }

    /* Logo + X acima do drawer (senao o menu fixed os cobre) */
    .nav__logo,
    .nav__toggle {
        position: relative;
        z-index: 100;
    }

    .nav__menu {
        position: fixed;
        top: 0;
        right: -100%;
        width: min(400px, 100%); /* tablet: largura fixa */
        height: 100vh;
        height: 100dvh;
        background-color: var(--color-bg-light);
        flex-direction: column;
        align-items: stretch;
        justify-content: flex-start;
        padding: 88px 24px 32px;
        gap: 8px;
        border-radius: 0;
        box-shadow: -4px 0 20px rgba(0, 0, 0, 0.1);
        transition: right var(--transition-base);
        z-index: 99;
        overflow-y: auto;
    }

    .nav__menu--open {
        right: 0;
    }

    /* Itens viram botões de largura cheia (pílula no ativo) */
    .nav__menu .nav__link {
        display: block;
        width: 100%;
        padding: 18px 24px;
        font-size: 18px;
        font-weight: 500;
        line-height: 1.4;
        color: var(--color-dark);
        border-radius: 16px;
        border-bottom: none;
        transition: background-color var(--transition-fast), color var(--transition-fast);
    }

    .nav__menu .nav__link--active {
        background-color: var(--color-accent);
        color: var(--color-dark);
        text-decoration: none;
    }

    .nav__actions {
        display: none;
    }

    /* CTAs ancorados no rodapé do drawer */
    .nav__menu .nav__actions--mobile {
        display: flex;
        flex-direction: column;
        width: 100%;
        margin-top: auto;
        padding-top: 24px;
        gap: 12px;
    }

    .nav__actions--mobile .nav__btn {
        width: 100%;
        justify-content: center;
        padding: 18px 24px;
        font-size: 16px;
        border-radius: var(--radius-full);
    }

    /* Seta fixa no canto direito, texto centralizado */
    .nav__actions--mobile .nav__btn--filled {
        position: relative;
    }

    .nav__actions--mobile .nav__btn--filled .nav__btn-icon {
        position: absolute;
        right: 24px;
        top: 50%;
        transform: translateY(-50%);
    }
}

/* ===== Mobile — drawer ocupa a tela inteira ===== */

@media (max-width: 600px) {
    .nav__menu {
        width: 100%;
    }
}