/* ── Site Header ── */

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background-color: transparent;
  transition: background-color var(--duration-normal) var(--ease-in-out),
              box-shadow var(--duration-normal) var(--ease-in-out),
              border-color var(--duration-normal) var(--ease-in-out);
  border-bottom: 1px solid transparent;
}

.site-header.nav--scrolled {
  background-color: var(--color-cream);
  border-bottom-color: var(--color-linen);
  box-shadow: var(--shadow-sm);
}

/* ── Nav Container ── */

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-block: var(--space-sm);
  max-width: 80rem;
  margin-inline: auto;
  padding-inline: clamp(1rem, 0.5rem + 2vw, 2rem);
}

/* ── Logo ── */

.nav__logo {
  display: flex;
  flex-direction: column;
  text-decoration: none;
  line-height: 1.1;
}

.nav__logo-name {
  font-family: var(--font-heading);
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--color-ink);
}

.nav__logo-tag {
  font-family: var(--font-body);
  font-size: var(--text-xs);
  color: var(--color-sage);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-weight: 500;
}

/* ── Menu ── */

.nav__menu {
  display: flex;
  align-items: center;
  gap: var(--space-md);
}

.nav__link {
  font-family: var(--font-body);
  font-size: var(--text-small);
  color: var(--color-ink-soft);
  position: relative;
  padding-block: 0.25rem;
  transition: color var(--duration-fast) var(--ease-in-out);
}

.nav__link::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--color-sage);
  border-radius: 1px;
  transition: width var(--duration-normal) var(--ease-out);
}

.nav__link:hover {
  color: var(--color-ink);
}

.nav__link:hover::after {
  width: 100%;
}

.nav__link--active {
  color: var(--color-ink);
}

.nav__link--active::after {
  width: 100%;
}

/* ── CTA Link ── */

.nav__link--cta {
  background-color: var(--color-terracotta);
  color: var(--color-white);
  padding: 0.5rem 1.25rem;
  border-radius: var(--radius-md);
  font-weight: 500;
  transition: background-color var(--duration-fast) var(--ease-in-out),
              transform var(--duration-fast) var(--ease-out);
}

.nav__link--cta::after {
  display: none;
}

.nav__link--cta:hover {
  background-color: var(--color-terracotta-dark);
  color: var(--color-white);
  transform: translateY(-1px);
}

/* ── Phone ── */

.nav__phone {
  display: flex;
  align-items: center;
  gap: 0.375rem;
  font-family: var(--font-body);
  font-size: var(--text-small);
  color: var(--color-sage-dark);
  transition: color var(--duration-fast);
}

.nav__phone:hover {
  color: var(--color-sage);
}

.nav__phone svg {
  flex-shrink: 0;
}

/* ── Hamburger Toggle ── */

.nav__toggle {
  display: none;
  flex-direction: column;
  gap: 6px;
  width: 24px;
  padding: 4px 0;
  z-index: 101;
}

.nav__toggle-bar {
  display: block;
  height: 2px;
  width: 100%;
  background-color: var(--color-ink);
  border-radius: 1px;
  transition: transform var(--duration-normal) var(--ease-out),
              opacity var(--duration-fast);
  transform-origin: center;
}

.nav__toggle[aria-expanded="true"] .nav__toggle-bar:nth-child(1) {
  transform: rotate(45deg) translate(3px, 5px);
}

.nav__toggle[aria-expanded="true"] .nav__toggle-bar:nth-child(2) {
  opacity: 0;
}

.nav__toggle[aria-expanded="true"] .nav__toggle-bar:nth-child(3) {
  transform: rotate(-45deg) translate(3px, -5px);
}

/* ── Mobile ── */

@media (max-width: 767px) {
  .nav__toggle {
    display: flex;
  }

  .nav__phone-number {
    display: none;
  }

  .nav__menu {
    display: none;
    position: fixed;
    inset: 0;
    background-color: var(--color-cream);
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: var(--space-lg);
    z-index: 99;
  }

  .nav__menu--open {
    display: flex;
  }

  .nav__menu .nav__link {
    font-size: var(--text-h3);
    font-family: var(--font-heading);
  }

  .nav__menu .nav__link--cta {
    font-size: var(--text-body);
    padding: 0.875rem 2rem;
  }
}

@media (max-width: 1023px) {
  .nav__phone-number {
    display: none;
  }
}