/* Landing page navigation — optimized & redesigned */
:root {
  --nav-top-h: 60px;
  --nav-cat-h: 46px;
  --nav-total-h: calc(var(--nav-top-h) + var(--nav-cat-h));
  --nav-ease: cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

html[dir="rtl"] body {
  direction: rtl;
  font-family: 'Vazirmatn', Tahoma, sans-serif;
}

/* ── Header shell ── */
.landing-site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid rgba(226, 232, 240, 0.7);
  transition: box-shadow 0.35s var(--nav-ease), background 0.35s var(--nav-ease);
}

.landing-site-header.scrolled {
  background: rgba(255, 255, 255, 0.97);
  box-shadow: 0 4px 28px rgba(2, 132, 199, 0.1);
}

.landing-site-header#nav {
  display: block;
  padding: 0;
}

.nav-shell {
  max-width: 1320px;
  margin: 0 auto;
}

/* ── Top bar ── */
.landing-site-header .nav-bar-top {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 0 1.5rem;
  height: var(--nav-top-h);
  position: static;
  justify-content: flex-start;
  flex-wrap: nowrap;
}

.landing-site-header .nav-logo {
  display: flex;
  align-items: center;
  gap: 0.55rem;
  color: var(--text-primary, #0F172A);
  font-weight: 800;
  font-size: 1.125rem;
  text-decoration: none !important;
  flex-shrink: 0;
  letter-spacing: -0.02em;
  transition: opacity 0.2s;
}

.landing-site-header .nav-logo:hover {
  opacity: 0.85;
}

.nav-logo-text {
  background: linear-gradient(135deg, var(--cyan, #0284C7), var(--blue, #2563EB));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.genetics-logo-svg {
  width: 34px;
  height: 34px;
  color: var(--cyan, #0284C7);
  flex-shrink: 0;
}

/* ── Search ── */
.nav-search-form {
  flex: 1;
  max-width: 420px;
  display: flex;
  align-items: center;
  background: #F8FAFC;
  border: 1.5px solid #E2E8F0;
  border-radius: 100px;
  padding: 0.15rem 0.15rem 0.15rem 1.1rem;
  min-width: 0;
  transition: border-color 0.25s, box-shadow 0.25s, background 0.25s;
}

.nav-search-form:focus-within {
  background: #fff;
  border-color: var(--cyan, #0284C7);
  box-shadow: 0 0 0 3px rgba(2, 132, 199, 0.1);
}

.nav-search-form input {
  flex: 1;
  border: none;
  background: transparent;
  font-size: 0.875rem;
  font-family: inherit;
  outline: none;
  min-width: 0;
  color: var(--text-primary, #0F172A);
}

.nav-search-form input::placeholder {
  color: var(--text-muted, #94A3B8);
}

.nav-search-btn {
  border: none;
  background: linear-gradient(135deg, var(--cyan, #0284C7), var(--blue, #2563EB));
  color: #fff;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: transform 0.2s var(--nav-ease), box-shadow 0.2s;
}

.nav-search-btn:hover {
  transform: scale(1.05);
  box-shadow: 0 4px 14px rgba(2, 132, 199, 0.3);
}

/* ── Actions ── */
.nav-actions {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex-shrink: 0;
  margin-right: auto;
}

.nav-icon-btn {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: 12px;
  border: 1.5px solid #E2E8F0;
  background: #fff;
  color: var(--text-secondary, #334155);
  text-decoration: none !important;
  cursor: pointer;
  transition: border-color 0.2s, color 0.2s, background 0.2s, transform 0.2s;
}

.nav-icon-btn:hover {
  border-color: var(--cyan, #0284C7);
  color: var(--cyan, #0284C7);
  background: var(--cyan-light, rgba(2, 132, 199, 0.06));
}

.nav-basket.has-items {
  border-color: var(--cyan, #0284C7);
  color: var(--cyan, #0284C7);
}

.nav-badge {
  position: absolute;
  top: -5px;
  left: -5px;
  min-width: 18px;
  height: 18px;
  padding: 0 5px;
  border-radius: 100px;
  background: linear-gradient(135deg, var(--cyan, #0284C7), var(--blue, #2563EB));
  color: #fff;
  font-size: 0.65rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  line-height: 1;
}

.nav-auth-link {
  text-decoration: none !important;
  color: var(--text-secondary, #334155) !important;
  font-size: 0.875rem;
  font-weight: 600;
  padding: 0.5rem 0.75rem;
  border-radius: 10px;
  transition: color 0.2s, background 0.2s;
}

.nav-auth-link:hover {
  color: var(--cyan, #0284C7) !important;
  background: var(--cyan-light, rgba(2, 132, 199, 0.06));
}

.landing-site-header .nav-cta {
  text-decoration: none !important;
  display: inline-flex;
  align-items: center;
  white-space: nowrap;
  padding: 0.5rem 1.15rem !important;
  font-size: 0.8125rem !important;
}

/* ── User button with name ── */
.nav-user-named {
  width: auto !important;
  padding: 0 0.85rem !important;
  gap: 0.4rem;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text-secondary, #334155);
  max-width: 180px;
}

.nav-username {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  max-width: 110px;
  display: inline-block;
}

.nav-user-caret {
  opacity: 0.5;
  flex-shrink: 0;
  transition: transform 0.2s;
}

.nav-user-trigger[aria-expanded="true"] .nav-user-caret {
  transform: rotate(180deg);
  opacity: 0.8;
}

/* ── User dropdown ── */
.nav-user-menu {
  position: relative;
}

.nav-user-dropdown {
  position: absolute;
  top: calc(100% + 8px);
  left: 0;
  min-width: 200px;
  background: #fff;
  border: 1px solid #E2E8F0;
  border-radius: 14px;
  box-shadow: 0 16px 40px rgba(2, 132, 199, 0.12);
  padding: 0.5rem;
  z-index: 1100;
  animation: navDropIn 0.2s var(--nav-ease);
}

.nav-user-dropdown:not([hidden]) {
  display: block;
}

.nav-user-label {
  display: block;
  padding: 0.4rem 0.75rem 0.55rem;
  font-size: 0.7rem;
  font-weight: 700;
  color: var(--text-muted, #64748B);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  border-bottom: 1px solid #F1F5F9;
  margin-bottom: 0.25rem;
}

.nav-user-dropdown a {
  display: block;
  padding: 0.55rem 0.75rem;
  border-radius: 8px;
  color: var(--text-secondary, #334155);
  text-decoration: none;
  font-size: 0.875rem;
  font-weight: 500;
  transition: background 0.15s, color 0.15s;
}

.nav-user-dropdown a:hover {
  background: var(--cyan-light, rgba(2, 132, 199, 0.08));
  color: var(--cyan, #0284C7);
}

.nav-user-logout {
  color: #DC2626 !important;
  margin-top: 0.25rem;
  border-top: 1px solid #F1F5F9;
  border-radius: 0 0 8px 8px !important;
  padding-top: 0.65rem !important;
}

.nav-user-logout:hover {
  background: rgba(220, 38, 38, 0.06) !important;
  color: #DC2626 !important;
}

@keyframes navDropIn {
  from { opacity: 0; transform: translateY(-6px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* ── Category bar ── */
.nav-categories {
  border-top: 1px solid #F1F5F9;
  height: var(--nav-cat-h);
  position: relative;
}

.nav-categories-track {
  overflow-x: auto;
  overflow-y: hidden;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
  height: 100%;
}

.nav-categories-track::-webkit-scrollbar {
  display: none;
}

.nav-categories .nav-links {
  display: flex;
  align-items: center;
  gap: 0.15rem;
  list-style: none;
  margin: 0;
  padding: 0 1.25rem;
  height: 100%;
  flex-wrap: nowrap;
  min-width: min-content;
}

.nav-categories .nav-links > li {
  position: relative;
  flex-shrink: 0;
  height: 100%;
  display: flex;
  align-items: center;
}

.nav-categories .nav-links .nav-link::after {
  display: none;
}

.nav-link {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.4rem 0.85rem;
  border-radius: 100px;
  color: var(--text-secondary, #334155) !important;
  text-decoration: none !important;
  font-size: 0.8125rem;
  font-weight: 600;
  white-space: nowrap;
  transition: color 0.2s, background 0.2s;
  line-height: 1.3;
}

.nav-link:hover {
  color: var(--cyan, #0284C7) !important;
  background: var(--cyan-light, rgba(2, 132, 199, 0.07));
}

.nav-link.active {
  color: var(--cyan, #0284C7) !important;
  background: rgba(2, 132, 199, 0.1);
}

.nav-link-icon {
  opacity: 0.7;
  flex-shrink: 0;
}

.nav-cat-icon {
  width: 16px;
  height: 16px;
  object-fit: contain;
  flex-shrink: 0;
}

.nav-caret {
  opacity: 0.5;
  flex-shrink: 0;
  transition: transform 0.2s;
}

.nav-dropdown:hover .nav-caret,
.nav-dropdown:focus-within .nav-caret {
  transform: rotate(180deg);
  opacity: 0.8;
}

/* ── Mega dropdown ── */
.nav-dropdown-panel {
  display: none;
  position: absolute;
  top: calc(100% + 4px);
  right: 0;
  min-width: 300px;
  max-width: 380px;
  background: #fff;
  border: 1px solid #E2E8F0;
  border-radius: 16px;
  box-shadow: 0 20px 48px rgba(2, 132, 199, 0.14);
  padding: 0;
  z-index: 1100;
  overflow: hidden;
  animation: navDropIn 0.22s var(--nav-ease);
}

.nav-dropdown:hover .nav-dropdown-panel,
.nav-dropdown:focus-within .nav-dropdown-panel {
  display: block;
}

.nav-dropdown-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.75rem 1rem;
  background: linear-gradient(135deg, rgba(2, 132, 199, 0.06), rgba(124, 58, 237, 0.04));
  border-bottom: 1px solid #F1F5F9;
}

.nav-dropdown-header strong {
  font-size: 0.875rem;
  color: var(--text-primary, #0F172A);
}

.nav-dropdown-header a {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--cyan, #0284C7);
  text-decoration: none;
}

.nav-dropdown-header a:hover {
  text-decoration: underline !important;
}

.nav-dropdown-body {
  display: flex;
  gap: 0.75rem;
  padding: 0.75rem;
}

.nav-dropdown-list {
  list-style: none;
  margin: 0;
  padding: 0;
  flex: 1;
  min-width: 0;
}

.nav-dropdown-list a {
  display: block;
  padding: 0.45rem 0.65rem;
  border-radius: 8px;
  color: var(--text-secondary, #334155);
  text-decoration: none;
  font-size: 0.8125rem;
  font-weight: 500;
  transition: background 0.15s, color 0.15s, padding-right 0.15s;
}

.nav-dropdown-list a:hover {
  background: var(--cyan-light, rgba(2, 132, 199, 0.08));
  color: var(--cyan, #0284C7);
  padding-right: 0.9rem;
}

.nav-dropdown-image {
  flex-shrink: 0;
}

.nav-dropdown-image img {
  width: 100px;
  height: 80px;
  border-radius: 10px;
  object-fit: cover;
}

/* ── Hamburger toggle ── */
.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 40px;
  height: 40px;
  padding: 8px;
  border: 1.5px solid #E2E8F0;
  border-radius: 12px;
  background: #fff;
  cursor: pointer;
  transition: border-color 0.2s;
}

.nav-toggle:hover {
  border-color: var(--cyan, #0284C7);
}

.nav-toggle-bar {
  display: block;
  width: 100%;
  height: 2px;
  background: var(--text-primary, #0F172A);
  border-radius: 2px;
  transition: transform 0.25s, opacity 0.25s;
}

.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.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: translateY(-7px) rotate(-45deg);
}

/* ── Mobile drawer ── */
.nav-mobile-panel {
  position: fixed;
  inset: 0;
  z-index: 1200;
  background: rgba(15, 23, 42, 0.45);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
}

.nav-mobile-panel:not([hidden]) {
  display: block;
  animation: navOverlayIn 0.25s ease;
}

@keyframes navOverlayIn {
  from { opacity: 0; }
  to   { opacity: 1; }
}

.nav-mobile-drawer {
  background: #fff;
  width: min(340px, 90vw);
  height: 100%;
  margin-right: auto;
  display: flex;
  flex-direction: column;
  box-shadow: -6px 0 32px rgba(0, 0, 0, 0.12);
  animation: navDrawerIn 0.3s var(--nav-ease);
}

@keyframes navDrawerIn {
  from { transform: translateX(100%); }
  to   { transform: translateX(0); }
}

.nav-mobile-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 1.25rem;
  border-bottom: 1px solid #F1F5F9;
}

.nav-mobile-title {
  font-size: 1rem;
  font-weight: 800;
  color: var(--text-primary, #0F172A);
}

.nav-mobile-close {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border: none;
  border-radius: 10px;
  background: #F1F5F9;
  color: var(--text-secondary, #334155);
  cursor: pointer;
  transition: background 0.2s;
}

.nav-mobile-close:hover {
  background: #E2E8F0;
}

.nav-mobile-search {
  display: flex;
  gap: 0.5rem;
  margin: 1rem 1.25rem 0;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid #F1F5F9;
}

.nav-mobile-search input {
  flex: 1;
  padding: 0.6rem 0.85rem;
  border: 1.5px solid #E2E8F0;
  border-radius: 12px;
  font-family: inherit;
  font-size: 0.875rem;
  outline: none;
  transition: border-color 0.2s;
}

.nav-mobile-search input:focus {
  border-color: var(--cyan, #0284C7);
}

.nav-mobile-search button {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 42px;
  border: none;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--cyan, #0284C7), var(--blue, #2563EB));
  color: #fff;
  cursor: pointer;
  flex-shrink: 0;
}

.nav-mobile-links {
  list-style: none;
  margin: 0;
  padding: 0.5rem 1.25rem;
  flex: 1;
  overflow-y: auto;
}

.nav-mobile-links > li > a {
  display: block;
  padding: 0.7rem 0;
  color: var(--text-primary, #0F172A);
  text-decoration: none;
  font-weight: 600;
  font-size: 0.9375rem;
  border-bottom: 1px solid #F8FAFC;
  transition: color 0.15s;
}

.nav-mobile-links > li > a:hover {
  color: var(--cyan, #0284C7);
}

.nav-mobile-accordion-btn {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  padding: 0.7rem 0;
  border: none;
  border-bottom: 1px solid #F8FAFC;
  background: none;
  font-family: inherit;
  font-size: 0.9375rem;
  font-weight: 600;
  color: var(--text-primary, #0F172A);
  cursor: pointer;
  text-align: right;
}

.nav-mobile-accordion-btn svg {
  transition: transform 0.2s;
  flex-shrink: 0;
}

.nav-mobile-accordion-btn[aria-expanded="true"] svg {
  transform: rotate(180deg);
}

.nav-mobile-sub {
  list-style: none;
  margin: 0;
  padding: 0 0 0.5rem 1rem;
}

.nav-mobile-sub:not([hidden]) {
  display: block;
}

.nav-mobile-sub a {
  display: block;
  padding: 0.5rem 0;
  color: var(--text-muted, #64748B);
  text-decoration: none;
  font-size: 0.875rem;
  font-weight: 500;
  transition: color 0.15s;
}

.nav-mobile-sub a:hover {
  color: var(--cyan, #0284C7);
}

.nav-mobile-footer {
  padding: 1rem 1.25rem 1.5rem;
  border-top: 1px solid #F1F5F9;
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.nav-mobile-footer a {
  flex: 1 1 auto;
  text-align: center;
  padding: 0.6rem 1rem;
  border-radius: 12px;
  text-decoration: none;
  font-size: 0.875rem;
  font-weight: 600;
  border: 1.5px solid #E2E8F0;
  color: var(--text-secondary, #334155);
  transition: border-color 0.2s, color 0.2s;
}

.nav-mobile-footer a:hover {
  border-color: var(--cyan, #0284C7);
  color: var(--cyan, #0284C7);
}

.nav-mobile-basket {
  flex: 1 1 100% !important;
  background: var(--cyan-light, rgba(2, 132, 199, 0.06));
  border-color: transparent !important;
}

.nav-mobile-register {
  background: linear-gradient(135deg, var(--cyan, #0284C7), var(--blue, #2563EB)) !important;
  color: #fff !important;
  border-color: transparent !important;
}

.nav-mobile-username {
  flex: 1 1 100%;
  text-align: center;
  padding: 0.5rem 0;
  font-size: 0.8125rem;
  font-weight: 700;
  color: var(--text-muted, #64748B);
  border-bottom: 1px solid #F1F5F9;
  margin-bottom: 0.25rem;
}

.nav-mobile-logout {
  flex: 1 1 100% !important;
  color: #DC2626 !important;
  border-color: rgba(220, 38, 38, 0.2) !important;
  margin-top: 0.25rem;
}

/* ── Responsive ── */
@media (max-width: 991px) {
  :root {
    --nav-cat-h: 0px;
    --nav-total-h: var(--nav-top-h);
  }

  .nav-search-form { display: none; }
  .nav-categories { display: none; }
  .nav-actions .nav-auth-link,
  .nav-actions .nav-cta,
  .nav-actions .nav-user-menu { display: none; }
  .landing-site-header .nav-toggle { display: flex; }

  .landing-site-header .nav-bar-top {
    justify-content: space-between;
    padding: 0 1rem;
  }

  .nav-actions {
    margin-right: 0;
    gap: 0.4rem;
  }
}

@media (min-width: 992px) {
  .nav-mobile-panel { display: none !important; }
  .landing-site-header .nav-toggle { display: none; }
}

@media (max-width: 480px) {
  .nav-logo-text { display: none; }
  :root { --nav-top-h: 54px; }
}