.header {
    position: sticky;
    top: 0;
    left: 0;
    width: 100%;
    height: var(--header-height);
    background-color: var(--bg-dark);
    z-index: 1000;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    transition: box-shadow 0.3s ease;
}

.header.scrolled {
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.5);
}

.header-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 100%;
    max-width: var(--content-max);
    margin: 0 auto;
    padding: 0 clamp(1.2rem, 5vw, 2.5rem);
}

.logo {
    display: flex;
    align-items: center;
    flex-shrink: 0;
    filter: invert();
}

/* Navegação: escondida no mobile, exibida no desktop */
.header-nav {
    display: none;
}

.logo-img {
    height: clamp(36px, 7vw, 48px);
    width: auto;
    display: block;
}

.btn-orcamento {
    background-color: var(--primary-yellow);
    color: var(--bg-dark);
    font-weight: 600;
    font-size: clamp(0.85rem, 2.8vw, 1rem);
    padding: clamp(0.7rem, 2.2vw, 0.85rem) clamp(1.4rem, 5vw, 2rem);
    border-radius: 50px;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    white-space: nowrap;
    letter-spacing: -0.01em;
    box-shadow: 0 2px 8px rgba(245, 197, 24, 0.25);
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    position: relative;
    z-index: 10;
    cursor: pointer;
}

.btn-orcamento:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 16px rgba(245, 197, 24, 0.45);
    background-color: #ffd03a;
}

.btn-orcamento:active {
    transform: translateY(0);
    box-shadow: 0 2px 8px rgba(245, 197, 24, 0.3);
}

@media (min-width: 768px) {
    .header-container {
        padding: 0 2.5rem;
    }
    
    .btn-orcamento {
        font-size: 0.95rem;
        padding: 0.8rem 1.8rem;
    }
}

@media (min-width: 1024px) {
    .header-container {
        padding: 0 3.5rem;
    }

    .logo-img {
        height: 46px;
    }

    .btn-orcamento {
        font-size: 1rem;
        padding: 0.85rem 2rem;
    }

    .header-nav {
        display: flex;
        align-items: center;
        gap: clamp(1.4rem, 2.4vw, 2.4rem);
    }

    .header-nav-link {
        position: relative;
        color: var(--text-light);
        text-decoration: none;
        font-size: 0.98rem;
        font-weight: 500;
        letter-spacing: -0.01em;
        padding: 6px 2px;
        transition: color 0.25s ease;
    }

    .header-nav-link::after {
        content: '';
        position: absolute;
        left: 0;
        right: 0;
        bottom: -2px;
        height: 2px;
        background: var(--primary-yellow);
        transform: scaleX(0);
        transform-origin: left center;
        transition: transform 0.25s ease;
    }

    .header-nav-link:hover,
    .header-nav-link.active {
        color: var(--primary-yellow);
    }

    .header-nav-link:hover::after,
    .header-nav-link.active::after {
        transform: scaleX(1);
    }
}

@media (min-width: 1440px) {
    .header-container {
        padding: 0 4rem;
    }
}