/* ==========================================================================
   Snow Busters — Header, Nav, Footer, Mobile Sticky CTA
   ========================================================================== */

/* ---------- Header ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255,255,255,0.92);
  backdrop-filter: saturate(180%) blur(12px);
  -webkit-backdrop-filter: saturate(180%) blur(12px);
  border-bottom: 1px solid var(--color-border);
  height: var(--header-height-mobile);
}
@media (min-width: 900px) {
  .site-header { height: var(--header-height); }
}

.site-header__inner {
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
}

.brand {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-family: var(--font-display);
  font-weight: 800;
  color: var(--sb-navy);
}
.brand img {
  height: 40px;
  width: auto;
}
@media (min-width: 900px) {
  .brand img { height: 46px; }
}

.main-nav {
  display: none;
}
@media (min-width: 900px) {
  .main-nav {
    display: flex;
    align-items: center;
    gap: var(--space-6);
  }
  .main-nav a {
    font-family: var(--font-display);
    font-weight: 600;
    font-size: 0.95rem;
    color: var(--color-text);
    position: relative;
    padding: 0.35rem 0;
  }
  .main-nav a::after {
    content: '';
    position: absolute;
    left: 0; right: 0; bottom: -2px;
    height: 2px;
    background: var(--sb-navy);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform var(--dur-fast) var(--ease-out);
  }
  .main-nav a:hover::after,
  .main-nav a[aria-current="page"]::after { transform: scaleX(1); }
}

.header-actions {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}
.header-cta {
  display: none;
}
@media (min-width: 900px) {
  .header-cta { display: inline-flex; }
}

/* Hamburger */
.nav-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  background: transparent;
  border: 1px solid var(--color-border-strong);
  border-radius: var(--radius-sm);
  color: var(--sb-navy);
}
@media (min-width: 900px) {
  .nav-toggle { display: none; }
}
.nav-toggle svg { width: 22px; height: 22px; }
.nav-toggle .icon-close { display: none; }
.nav-toggle[aria-expanded="true"] .icon-open { display: none; }
.nav-toggle[aria-expanded="true"] .icon-close { display: block; }

/* Mobile nav drawer */
.mobile-nav {
  position: fixed;
  inset: var(--header-height-mobile) 0 0 0;
  background: #fff;
  z-index: 99;
  transform: translateX(100%);
  transition: transform var(--dur-med) var(--ease-out);
  overflow-y: auto;
}
.mobile-nav.is-open { transform: translateX(0); }
.mobile-nav__inner {
  padding: var(--space-6) var(--space-5) var(--space-8);
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}
.mobile-nav a {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.15rem;
  padding: var(--space-4) var(--space-2);
  color: var(--sb-navy);
  border-bottom: 1px solid var(--color-border);
}
.mobile-nav .btn { margin-top: var(--space-5); }
.mobile-nav__contact {
  margin-top: var(--space-6);
  padding-top: var(--space-5);
  border-top: 1px solid var(--color-border);
  font-size: var(--fs-small);
  color: var(--color-text-muted);
}
.mobile-nav__contact a { color: var(--sb-navy); font-weight: 700; }

@media (min-width: 900px) {
  .mobile-nav { display: none !important; }
}

/* Mobile sticky bottom CTA */
.sticky-cta {
  position: fixed;
  left: 0; right: 0; bottom: 0;
  z-index: 90;
  background: #fff;
  border-top: 1px solid var(--color-border);
  padding: var(--space-3) var(--space-4);
  padding-bottom: calc(var(--space-3) + env(safe-area-inset-bottom));
  box-shadow: 0 -8px 24px rgba(0,39,83,0.08);
  display: flex;
  gap: var(--space-3);
}
.sticky-cta .btn { flex: 1; }
.sticky-cta a.tel-btn {
  flex: 0 0 auto;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  border: 1px solid var(--color-border-strong);
  border-radius: var(--radius-sm);
  color: var(--sb-navy);
}
@media (min-width: 900px) {
  .sticky-cta { display: none; }
}
body.has-sticky-cta { padding-bottom: 76px; }
@media (min-width: 900px) {
  body.has-sticky-cta { padding-bottom: 0; }
}

/* ---------- Footer ---------- */
.site-footer {
  background: var(--sb-navy);
  color: rgba(255,255,255,0.88);
  padding-block: var(--space-8) var(--space-6);
}
.site-footer p { color: rgba(255,255,255,0.72); }
.footer-grid {
  display: grid;
  gap: var(--space-7);
  grid-template-columns: 1fr;
}
@media (min-width: 720px) {
  .footer-grid {
    grid-template-columns: 1.4fr 1fr 1fr;
  }
}
.footer-brand img { height: 44px; width: auto; margin-bottom: var(--space-4); }
.footer-tagline {
  font-family: var(--font-display);
  font-weight: 700;
  color: #fff;
  font-size: 1.05rem;
  margin-bottom: var(--space-4);
}
.footer-col h4 {
  color: #fff;
  font-size: 0.85rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin-bottom: var(--space-4);
}
.footer-col ul { display: flex; flex-direction: column; gap: var(--space-3); }
.footer-col a { color: rgba(255,255,255,0.82); }
.footer-col a:hover { color: #fff; text-decoration: underline; }
.footer-contact { display: flex; flex-direction: column; align-items: flex-start; gap: var(--space-3); }
.footer-contact a { color: #fff; font-weight: 600; }
.footer-contact .btn { align-self: flex-start; }
.footer-bottom {
  margin-top: var(--space-8);
  padding-top: var(--space-5);
  border-top: 1px solid rgba(255,255,255,0.16);
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  justify-content: space-between;
  font-size: var(--fs-small);
  color: rgba(255,255,255,0.6);
}
body.has-sticky-cta .site-footer {
  padding-bottom: calc(var(--space-6) + 76px);
}
@media (min-width: 900px) {
  body.has-sticky-cta .site-footer { padding-bottom: var(--space-6); }
}