/* ════════════════════════════════════════════════════════
   PetCare — Navigation + mobile menu
   ════════════════════════════════════════════════════════ */

nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 300;
  display: flex; align-items: center; justify-content: space-between;
  height: 70px;
  padding: 0 6%;
  background: var(--nav-bg);
  border-bottom: 1px solid var(--border);
  backdrop-filter: blur(18px);
  transition: background .35s, border-color .35s, box-shadow .3s;
}
nav.elevated { box-shadow: var(--shadow); }

.nav-logo {
  display: flex; align-items: center; gap: 10px;
  font-family: 'DM Serif Display', serif;
  font-size: 1.4rem; font-weight: 700;
  letter-spacing: -.02em;
  color: var(--orange);
  text-decoration: none;
  transition: color .3s;
}
.nav-logo:hover { color: var(--orange-d); }
.nav-logo svg { width: 32px; height: 32px; transition: transform .3s; }
.nav-logo:hover svg { transform: rotate(-8deg) scale(1.08); }

.nav-links { display: flex; align-items: center; gap: 28px; }
.nav-links a:not(.btn) {
  font-weight: 500; font-size: .92rem;
  color: var(--nav-text);
  text-decoration: none;
  transition: color .2s;
}
.nav-links a:not(.btn):hover { color: var(--nav-text-h); }

/* Right-side cluster (mobile toggle + hamburger) */
.nav-right { display: flex; align-items: center; gap: 12px; }

/* ── HAMBURGER ── */
.hamburger {
  display: none;
  flex-direction: column; gap: 5px;
  padding: 4px;
  background: none; border: none;
  cursor: pointer;
}
.hamburger span {
  display: block;
  width: 22px; height: 2px;
  border-radius: 2px;
  background: var(--nav-text);
  transition: transform .3s, opacity .3s;
}
.hamburger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.hamburger.open span:nth-child(2) { opacity: 0; }
.hamburger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ── MOBILE MENU ── */
.mobile-menu {
  display: none;
  position: fixed; top: 70px; left: 0; right: 0; z-index: 299;
  flex-direction: column; gap: 4px;
  padding: 20px 6% 28px;
  background: var(--nav-bg);
  border-bottom: 1px solid var(--border);
  backdrop-filter: blur(20px);
  transition: background .35s;
}
.mobile-menu.open { display: flex; }
.mobile-menu a {
  padding: 10px 4px;
  border-bottom: 1px solid var(--border);
  font-weight: 500; font-size: 1rem;
  color: var(--nav-text);
  text-decoration: none;
  transition: color .2s;
}
.mobile-menu a:hover { color: var(--orange); }
.mobile-menu .btn { margin-top: 10px; justify-content: center; }

/* ── RESPONSIVE ── */
@media (max-width: 640px) {
  nav .nav-links { display: none; }
  .hamburger { display: flex; }
}