/*
 * Momo Review — Navbar
 * Port từ React src/components/Navbar.css.
 * Mobile-first, glassmorphism navbar với scroll effect.
 */
.navbar {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
  transition: var(--transition);
}

.navbar.scrolled {
  box-shadow: var(--shadow-sm);
}

.navbar-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 20px;
  gap: 20px;
}

.navbar .logo {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text);
}

.navbar .logo img,
.navbar .logo svg {
  height: 32px;
  width: auto;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 24px;
}

.nav-list {
  display: flex;
  align-items: center;
  gap: 24px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.nav-list li {
  margin: 0;
  padding: 0;
}

.nav-link {
  color: var(--text);
  font-weight: 500;
  padding: 8px 4px;
  position: relative;
  transition: var(--transition);
}

.nav-link:hover,
.nav-link.active {
  color: var(--primary);
}

.nav-link.active::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--primary);
  border-radius: 2px;
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

.icon-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 12px;
  border-radius: 30px;
  background: transparent;
  color: var(--text);
  font-weight: 500;
  transition: var(--transition);
  cursor: pointer;
  font-size: 0.95rem;
}

.icon-btn:hover {
  background: var(--primary-light);
  color: white;
}

.lang-dropdown-container {
  position: relative;
}

.lang-dropdown-menu {
  position: absolute;
  top: calc(100% + 8px);
  right: 0;
  min-width: 180px;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-md);
  padding: 8px;
  z-index: 200;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

/* The `display: flex` above beats the user-agent `[hidden] { display: none }`
 * because the class selector has higher specificity. Re-assert `display: none`
 * with an explicit attribute selector so the JS toggle (`element.hidden = true`)
 * actually hides the menu when the user clicks outside / presses Escape. */
.lang-dropdown-menu[hidden],
.user-menu[hidden] {
  display: none;
}

.lang-option {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 12px;
  border-radius: 12px;
  color: var(--text);
  text-decoration: none;
  background: none;
  border: none;
  width: 100%;
  text-align: left;
  font-size: 0.95rem;
  transition: var(--transition);
  cursor: pointer;
}

.lang-option:hover,
.lang-option.active {
  background: var(--primary-light);
  color: white;
}

.user-dropdown-container {
  position: relative;
}

.user-avatar-btn {
  padding: 4px;
  border-radius: 50%;
  background: transparent;
  cursor: pointer;
}

.avatar-circle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  color: white;
  font-weight: 700;
  font-size: 0.875rem;
  text-transform: uppercase;
}

.user-menu {
  min-width: 200px;
}

.search-container {
  position: relative;
}

/* Search icon button (always visible) */
.search-toggle-btn {
  padding: 6px;
  border-radius: 50%;
  background: transparent;
  border: 0;
  cursor: pointer;
  color: var(--text);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition);
}

.search-toggle-btn:hover {
  background: var(--primary-light);
  color: white;
}

.search-toggle-btn[aria-expanded="true"] {
  background: var(--primary-light);
  color: white;
}

/* Popup panel — hidden by default, opens below the icon */
.search-popup {
  position: absolute;
  top: calc(100% + 8px);
  right: 0;
  min-width: 360px;
  max-width: calc(100vw - 32px);
  background: rgba(255, 255, 255, 0.98);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-md);
  padding: 16px;
  z-index: 200;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.search-popup[hidden] {
  display: none;
}

.search-popup .search-form {
  display: flex;
  align-items: center;
  background: var(--background);
  border: 1px solid var(--border);
  border-radius: 30px;
  padding: 4px 4px 4px 14px;
  gap: 8px;
  transition: var(--transition);
}

.search-popup .search-form:focus-within {
  background: white;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(255, 140, 163, 0.15);
}

.search-form-icon {
  color: var(--text-light);
  flex-shrink: 0;
}

.search-popup .search-input {
  flex: 1;
  min-width: 0;
  width: auto;
  border: none;
  background: transparent;
  outline: none;
  padding: 6px 0;
  font-size: 0.95rem;
  color: var(--text);
  font-family: inherit;
}

.search-popup .search-input::placeholder {
  color: var(--text-light);
  opacity: 0.8;
}

.search-submit-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border: 0;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), #ff6b8b);
  color: white;
  cursor: pointer;
  flex-shrink: 0;
  transition: var(--transition);
}

.search-submit-btn:hover {
  transform: translateX(2px);
  box-shadow: 0 2px 8px rgba(255, 140, 163, 0.4);
}

.search-popup-hint {
  margin: 0;
  padding: 0 4px;
  font-size: 0.78rem;
  color: var(--text-light);
  line-height: 1.3;
}

@media (max-width: 480px) {
  .search-popup {
    min-width: 280px;
    right: -8px;
  }
}

.mobile-menu-btn {
  display: none;
  padding: 8px;
}

/* Mobile nav overlay */
.mobile-nav-overlay {
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  background: rgba(255, 255, 255, 0.98);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-top: 1px solid var(--border);
  box-shadow: var(--shadow-md);
  padding: 16px 20px;
  display: none;
  flex-direction: column;
  gap: 4px;
}

.mobile-nav-overlay:not([hidden]) {
  display: flex;
}

.mobile-nav-list {
  display: flex;
  flex-direction: column;
  gap: 4px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.mobile-nav-divider {
  height: 1px;
  background: var(--border);
  margin: 8px 0;
}

.mobile-cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  margin: 4px 0 8px;
  padding: 12px 20px;
  width: 100%;
}

@media (min-width: 769px) {
  .mobile-cta { display: none; }
}

/* Mobile auth section (after menu items + divider).
 * Container: stacks Viết đánh giá (CTA) + auth buttons + logout link. */
.mobile-nav-auth {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-top: 4px;
}

/* Logged-out: 2-col grid for Đăng nhập / Đăng ký — both equally
 * visible, equal width, no tiny text-link anti-pattern. */
.mobile-auth-buttons {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
}

.mobile-auth-btn {
  width: 100%;
  text-align: center;
  padding: 10px 14px;
  font-size: 0.875rem;
  font-weight: 600;
  text-decoration: none;
  border-radius: 30px;
  border: 1px solid var(--border);
  color: var(--text);
  background: transparent;
  transition: var(--transition);
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.mobile-auth-btn:hover {
  background: var(--primary);
  color: white;
  border-color: transparent;
}

.mobile-auth-link {
  text-align: center;
  font-size: 0.85rem;
  color: var(--text-light);
  text-decoration: none;
  padding: 6px 0 0;
  margin-top: 2px;
  border-top: 1px solid var(--border);
  transition: var(--transition);
}

.mobile-auth-link:hover {
  color: var(--primary);
}

/* Responsive */
@media (max-width: 768px) {
  .nav-links { display: none; }
  .mobile-menu-btn { display: inline-flex; }
  .search-popup {
    min-width: 300px;
  }
  .lang-text { display: none; }
  .login-text { display: none; }
  .navbar-container { padding: 12px 16px; gap: 8px; }
  /* Hide desktop header CTA on mobile — already exposed inside the mobile menu. */
  .navbar-container .header-cta { display: none; }
}

/* When the mobile nav is open, hide the other top-bar actions
 * (search, account, language). The menu is the only thing that
 * matters in "menu mode" — the X close button is the lone top-right
 * affordance. Less visual noise, clearer focus. */
body.mobile-nav-open .search-toggle-btn,
body.mobile-nav-open .login-btn,
body.mobile-nav-open .header-cta {
  display: none !important;
}

@media (max-width: 480px) {
  .navbar .logo {
    font-size: 1.25rem;
    flex-shrink: 0;
    min-width: 0;
  }
  .navbar .logo img,
  .navbar .logo svg {
    height: 28px;
  }
  .icon-btn { padding: 6px 8px; }
  .nav-actions { gap: 4px; }
  .user-avatar-btn { padding: 2px; }
  .avatar-circle { width: 32px; height: 32px; font-size: 0.8rem; }
  .mobile-menu-btn { padding: 6px; }
}