/* Explain: Styles for the site header and mobile navigation */
.site-header {
    position: sticky;
    top: 0;
    z-index: 50;
    background: rgba(255, 255, 255, 0.97);
    border-bottom: 1px solid var(--border-color);
}

.site-header__inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    min-height: 68px;
}

.brand { display: flex; align-items: center; gap: 0.65rem; }
.brand__mark {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 42px;
    height: 42px;
    border-radius: 12px;
    background: var(--primary-color);
    color: #fff;
    font-family: var(--font-heading);
    font-weight: 800;
    font-size: 1rem;
    flex-shrink: 0;
}
.brand__name {
    display: block;
    font-family: var(--font-heading);
    font-weight: 700;
    font-size: 1.05rem;
    line-height: 1.15;
    color: var(--primary-color);
}
.brand__sub {
    display: block;
    font-size: 0.72rem;
    color: var(--text-muted);
}

.site-nav { display: none; }
@media (min-width: 992px) {
    .site-nav { display: flex; align-items: center; gap: 1.35rem; }
}
.site-nav > a,
.site-nav__dropbtn {
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--text-color);
    background: none;
    border: none;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    padding: 0;
}
.site-nav > a:hover,
.site-nav__dropbtn:hover { color: var(--accent-hover); }

.site-nav__drop { position: relative; }
.site-nav__menu {
    position: absolute;
    top: 100%;
    inset-inline-start: 0;
    padding-top: 0.7rem;
    min-width: 260px;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.18s ease, visibility 0.18s ease;
    z-index: 10;
}
.site-nav__drop:hover .site-nav__menu,
.site-nav__drop:focus-within .site-nav__menu {
    opacity: 1;
    visibility: visible;
}
.site-nav__menu-inner {
    background: #fff;
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    box-shadow: var(--shadow-md);
    padding: 0.5rem;
    display: grid;
    gap: 0.1rem;
}
.site-nav__menu a {
    display: block;
    padding: 0.6rem 0.8rem;
    border-radius: var(--radius-sm);
    font-size: 0.92rem;
    font-weight: 600;
}
.site-nav__menu a:hover { background: var(--surface-color); color: var(--primary-color); }

.site-header__actions { display: flex; align-items: center; gap: 0.6rem; }
.phone-num { display: none; }
@media (min-width: 992px) {
    .phone-num { display: inline; }
}
.nav-toggle {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 46px;
    height: 46px;
    border-radius: 12px;
    border: 1.5px solid var(--border-color);
    background: #fff;
    color: var(--primary-color);
    font-size: 1.15rem;
    cursor: pointer;
}
@media (min-width: 992px) {
    .nav-toggle { display: none; }
}

.mobile-nav {
    position: fixed;
    inset: 0;
    z-index: 80;
    background: rgba(16, 40, 61, 0.5);
}
.mobile-nav__panel {
    position: absolute;
    inset-block: 0;
    inset-inline-end: 0;
    width: min(88%, 360px);
    background: #fff;
    padding: 1.1rem;
    display: flex;
    flex-direction: column;
    gap: 0.15rem;
    overflow-y: auto;
}
.mobile-nav__head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 0.75rem;
}
.mobile-nav__close {
    width: 42px;
    height: 42px;
    border-radius: 12px;
    border: 1.5px solid var(--border-color);
    background: #fff;
    color: var(--primary-color);
    font-size: 1.1rem;
    cursor: pointer;
}
.mobile-nav__group-title {
    font-size: 0.76rem;
    font-weight: 700;
    color: var(--text-muted);
    padding: 0.7rem 0.9rem 0.2rem;
}
.mobile-nav a {
    display: block;
    padding: 0.75rem 0.9rem;
    border-radius: var(--radius-sm);
    font-weight: 600;
    font-size: 1rem;
}
.mobile-nav a:hover { background: var(--surface-color); }
.mobile-nav__cta { margin-top: 0.85rem; display: grid; gap: 0.6rem; }