/* ===== Shared Site Header / Navigation ===== */
/* Used across all pages (index, sobre, procedimentos, diferenciais, contato).
   Relies on --color-*, --font-*, --shadow-*, --transition custom properties
   already defined by the page's own stylesheet (styles.css / mini-lipo.css),
   both of which share the same brand token values. */

:root {
    --site-header-height: 76px;
}

.site-header {
    position: sticky;
    top: 0;
    z-index: 1000;
    background: var(--color-primary);
    box-shadow: var(--shadow-sm);
}

.site-header__inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
    padding: 14px 24px;
}

.site-header__logo {
    display: flex;
    align-items: center;
    flex-shrink: 0;
}

.site-header__logo-img {
    height: 48px;
    width: auto;
    filter: brightness(0) invert(1);
}

.site-nav__list {
    display: flex;
    align-items: center;
    gap: 28px;
    list-style: none;
    margin: 0;
    padding: 0;
}

.site-nav__link {
    display: inline-block;
    font-family: var(--font-body);
    font-size: 14px;
    font-weight: 500;
    color: rgba(255, 255, 255, 0.85);
    text-decoration: none;
    position: relative;
    padding: 6px 0;
    transition: var(--transition);
}

.site-nav__link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--color-accent);
    transition: var(--transition);
}

.site-nav__link:hover,
.site-nav__link.is-active {
    color: var(--color-accent);
}

.site-nav__link:hover::after,
.site-nav__link.is-active::after {
    width: 100%;
}

.site-nav__link.site-nav__cta {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: var(--color-accent);
    color: var(--color-white) !important;
    font-size: 14px;
    font-weight: 600;
    padding: 10px 20px;
    border-radius: 8px;
    white-space: nowrap;
}

.site-nav__link.site-nav__cta::after {
    display: none;
}

.site-nav__link.site-nav__cta:hover {
    background: var(--color-accent-dark);
    color: var(--color-white) !important;
}

.site-nav__toggle {
    display: none;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    width: 32px;
    height: 32px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0;
    flex-shrink: 0;
}

.site-nav__toggle span {
    width: 100%;
    height: 2px;
    background: var(--color-white);
    transition: var(--transition);
}

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

.site-nav__toggle.is-open span:nth-child(2) {
    opacity: 0;
}

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

@media (max-width: 860px) {
    .site-nav__toggle {
        display: flex;
    }

    .site-nav {
        position: fixed;
        top: var(--site-header-height);
        left: 0;
        right: 0;
        bottom: 0;
        background: var(--color-primary);
        transform: translateY(-12px);
        opacity: 0;
        visibility: hidden;
        transition: var(--transition);
        overflow-y: auto;
    }

    .site-nav.is-open {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }

    .site-nav__list {
        flex-direction: column;
        align-items: stretch;
        gap: 4px;
        padding: 24px;
    }

    .site-nav__link {
        width: 100%;
        padding: 14px 4px;
        font-size: 16px;
    }

    .site-nav__link.site-nav__cta {
        margin-top: 12px;
        justify-content: center;
        width: 100%;
    }
}