/* ===== Header / Navigation ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: saturate(140%) blur(8px);
  border-bottom: 1px solid transparent;
  transition: border-color .2s ease, box-shadow .2s ease;
}

.site-header.is-scrolled {
  border-bottom-color: var(--color-line);
  box-shadow: 0 8px 24px -20px rgba(20, 42, 61, 0.4);
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  padding-block: var(--space-3);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.65rem;
  text-decoration: none;
  color: var(--color-ink);
}

.brand__logo-img {
  height: 42px;
  width: auto;
  display: block;
}

.brand__mark {
  display: inline-block;
  width: 38px;
  height: 38px;
  flex-shrink: 0;
  color: var(--color-accent);
  background-color: currentColor;
  -webkit-mask-image: url("../img/logo-mark.svg");
  mask-image: url("../img/logo-mark.svg");
  -webkit-mask-repeat: no-repeat;
  mask-repeat: no-repeat;
  -webkit-mask-position: center;
  mask-position: center;
  -webkit-mask-size: contain;
  mask-size: contain;
}

.brand__text {
  display: flex;
  flex-direction: column;
  line-height: 1.15;
}

.brand__name {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.15rem;
  color: var(--color-ink);
}

.brand__tagline {
  font-family: var(--font-display);
  font-style: italic;
  font-size: 0.78rem;
  color: var(--color-muted);
}

.site-header.is-scrolled .brand__tagline {
  display: none;
}

.main-nav {
  display: none;
}

.main-nav__list {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  list-style: none;
  margin: 0;
  padding: 0;
  font-weight: 500;
  font-size: 0.95rem;
}

.main-nav__list a {
  text-decoration: none;
  color: var(--color-ink);
  padding-block: 0.3rem;
  border-bottom: 2px solid transparent;
}
.main-nav__list a:hover {
  border-bottom-color: var(--color-accent);
}

.site-header__actions {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.header-phone {
  display: none;
  align-items: center;
  gap: 0.4rem;
  font-weight: 600;
  font-size: 0.95rem;
  text-decoration: none;
  color: var(--color-ink);
}
.header-phone svg { width: 18px; height: 18px; color: var(--color-accent); }

.nav-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 42px;
  height: 42px;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-soft);
  background: var(--color-white);
}
.nav-toggle svg { width: 20px; height: 20px; }

@media (min-width: 900px) {
  .main-nav { display: block; }
  .header-phone { display: inline-flex; }
  .nav-toggle { display: none; }
}

/* Mobile Menu */
.mobile-nav {
  display: none;
  flex-direction: column;
  gap: 0;
  border-top: 1px solid var(--color-line);
  background: var(--color-white);
}
.mobile-nav.is-open { display: flex; }
.mobile-nav a {
  display: block;
  padding: var(--space-3) var(--space-4);
  text-decoration: none;
  color: var(--color-ink);
  font-weight: 500;
  border-bottom: 1px solid var(--color-line);
}
@media (min-width: 900px) {
  .mobile-nav { display: none !important; }
}

/* ===== Footer ===== */
.site-footer {
  background: var(--color-ink-2);
  color: var(--color-wash);
  padding-block: var(--space-7) var(--space-5);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-6);
}

@media (min-width: 800px) {
  .footer-grid {
    grid-template-columns: 1.6fr 1fr 1fr;
  }
}

.footer-brand .brand__name,
.footer-brand .brand__tagline {
  color: var(--color-wash);
}
.footer-brand .brand__mark { color: var(--color-accent); }

.footer-brand p {
  color: rgba(234, 242, 250, 0.75);
  max-width: 38ch;
  margin-top: var(--space-3);
}

.footer-heading {
  font-family: var(--font-body);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-size: 0.78rem;
  color: var(--color-muted);
  margin-bottom: var(--space-3);
}

.footer-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}
.footer-list a {
  color: rgba(234, 242, 250, 0.85);
  text-decoration: none;
}
.footer-list a:hover { color: var(--color-accent); }

.footer-social {
  display: flex;
  gap: var(--space-3);
  margin-top: var(--space-4);
}
.footer-social a {
  width: 36px;
  height: 36px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid rgba(234, 242, 250, 0.25);
  border-radius: 50%;
  color: var(--color-wash);
}
.footer-social a:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
}
.footer-social svg { width: 16px; height: 16px; }

.footer-bottom {
  margin-top: var(--space-6);
  padding-top: var(--space-4);
  border-top: 1px solid rgba(234, 242, 250, 0.15);
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  justify-content: space-between;
  font-size: 0.85rem;
  color: rgba(234, 242, 250, 0.65);
}

.footer-bottom button {
  background: none;
  border: none;
  color: inherit;
  text-decoration: underline;
  font-size: inherit;
  padding: 0;
}