/* ========================================
   MOBILE-FIRST NAVIGATION SYSTEM
   Bottom Nav for Mobile + Top Nav for Desktop
   ======================================== */

/* ===== TOP NAVIGATION (Desktop) ===== */
.top-nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  background: rgba(255, 255, 255, 0.95);
  -webkit-backdrop-filter: blur(12px);
  backdrop-filter: blur(12px);
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.08);
  z-index: var(--z-fixed);
  display: none;
  /* Hidden on mobile */
  border-bottom: 1px solid rgba(0, 0, 0, 0.06);
}

@media (min-width: 1024px) {
  .top-nav {
    display: block;
  }

  body {
    padding-top: var(--nav-height);
  }
}

.top-nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--nav-height);
  padding: 0 var(--space-8);
  max-width: var(--container-max-width);
  margin: 0 auto;
}

.top-nav-logo {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-primary);
  text-decoration: none;
}

.top-nav-logo-icon {
  font-size: var(--font-size-3xl);
}

.top-nav-menu {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  list-style: none;
  margin: 0;
  padding: 0;
}

.top-nav-link {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-4);
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-medium);
  color: var(--color-gray-700);
  border-radius: var(--radius-lg);
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative;
}

.top-nav-link::after {
  content: '';
  position: absolute;
  bottom: 8px;
  left: 50%;
  width: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--color-primary), var(--color-primary-light));
  transform: translateX(-50%);
  transition: width 0.3s ease;
}

.top-nav-link:hover::after {
  width: calc(100% - 2rem);
}

.top-nav-link:hover {
  background-color: var(--color-gray-50);
  color: var(--color-primary);
}

.top-nav-link.active {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
  color: var(--color-white);
  box-shadow: 0 4px 12px rgba(45, 106, 79, 0.25);
}

.top-nav-link.active::after {
  width: 0;
}

.top-nav-cta {
  margin-left: var(--space-4);
}

/* ===== AUTHENTICATION UI ===== */
.top-nav-auth {
  margin-left: auto;
  margin-right: var(--space-4);
}

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

.btn-ghost {
  background: transparent;
  color: var(--color-primary);
  border: 2px solid var(--color-primary);
}

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

.user-menu-trigger {
  position: relative;
}

.user-menu-btn {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-4);
  background: var(--gray-50);
  border: 2px solid var(--gray-200);
  border-radius: var(--radius-full);
  cursor: pointer;
  transition: all 0.2s;
  font-size: var(--text-sm);
  font-weight: 600;
}

.user-menu-btn:hover {
  background: var(--gray-100);
  border-color: var(--color-primary);
}

.user-avatar {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
  color: var(--white);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: var(--text-sm);
}

.user-name {
  max-width: 120px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.premium-badge-mini {
  font-size: 0.9rem;
}

.dropdown-arrow {
  font-size: 0.8rem;
  transition: transform 0.2s;
}

.user-menu-btn:hover .dropdown-arrow {
  transform: translateY(2px);
}

.user-dropdown {
  position: absolute;
  top: calc(100% + 8px);
  right: 0;
  min-width: 260px;
  background: var(--white);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-2xl);
  border: 1px solid var(--gray-200);
  z-index: 1000;
  overflow: hidden;
}

.user-dropdown-header {
  padding: var(--space-5);
  background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
  border-bottom: 1px solid var(--gray-200);
}

.user-info-name {
  display: block;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: var(--space-1);
}

.user-info-email {
  display: block;
  font-size: var(--text-sm);
  color: var(--text-secondary);
}

.premium-badge {
  display: inline-block;
  margin-top: var(--space-2);
  padding: var(--space-1) var(--space-3);
  background: linear-gradient(135deg, #ffd700, #ffed4e);
  border-radius: var(--radius-full);
  font-size: var(--text-xs);
  font-weight: 700;
  color: #8b4513;
}

.user-dropdown-menu {
  padding: var(--space-2);
}

.dropdown-item {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  text-decoration: none;
  transition: all 0.2s;
  cursor: pointer;
  border: none;
  background: transparent;
  width: 100%;
  text-align: left;
  font-size: var(--text-base);
}

.dropdown-item:hover {
  background: var(--gray-50);
  color: var(--color-primary);
}

.dropdown-icon {
  font-size: 1.2rem;
}

.premium-link {
  color: var(--color-primary);
  font-weight: 600;
}

.dropdown-divider {
  height: 1px;
  background: var(--gray-200);
  margin: var(--space-2) 0;
}

.logout-btn {
  color: #dc2626;
}

.logout-btn:hover {
  background: #fee;
}

/* Mobile Auth Button */
.mobile-auth-btn {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--color-primary);
  color: var(--white);
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  transition: all 0.2s;
}

.mobile-auth-btn:active {
  transform: scale(0.95);
}

.mobile-auth-btn .user-avatar {
  width: 40px;
  height: 40px;
  font-size: 1rem;
}

/* Mobile User Menu Overlay */
.mobile-user-menu-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.5);
  backdrop-filter: blur(4px);
  z-index: 10000;
  animation: fadeIn 0.2s;
}

@keyframes fadeIn {
  from {
    opacity: 0;
  }

  to {
    opacity: 1;
  }
}

.mobile-user-menu {
  position: absolute;
  top: 0;
  right: 0;
  width: 85%;
  max-width: 320px;
  height: 100%;
  background: var(--white);
  box-shadow: var(--shadow-2xl);
  animation: slideInRight 0.3s;
  overflow-y: auto;
}

@keyframes slideInRight {
  from {
    transform: translateX(100%);
  }

  to {
    transform: translateX(0);
  }
}

.mobile-user-header {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  padding: var(--space-6);
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
  color: var(--white);
}

.mobile-user-avatar {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: var(--white);
  color: var(--color-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 1.5rem;
}

.mobile-user-info {
  flex: 1;
}

.mobile-user-name {
  font-weight: 700;
  font-size: var(--text-lg);
  margin-bottom: var(--space-1);
}

.mobile-user-email {
  font-size: var(--text-sm);
  opacity: 0.9;
}

.mobile-menu-close {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.2);
  color: var(--white);
  border: none;
  cursor: pointer;
  font-size: 1.2rem;
}

.mobile-premium-badge {
  padding: var(--space-3) var(--space-6);
  background: linear-gradient(135deg, #ffd700, #ffed4e);
  color: #8b4513;
  font-weight: 700;
  text-align: center;
  font-size: var(--text-sm);
}

.mobile-user-nav {
  padding: var(--space-4);
}

.mobile-menu-item {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  padding: var(--space-4);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  text-decoration: none;
  transition: all 0.2s;
  border: none;
  background: transparent;
  width: 100%;
  text-align: left;
  font-size: var(--text-base);
  cursor: pointer;
  margin-bottom: var(--space-2);
}

.mobile-menu-item:hover {
  background: var(--gray-50);
}

.mobile-menu-icon {
  font-size: 1.5rem;
  width: 32px;
  text-align: center;
}

.logout-item {
  color: #dc2626;
  margin-top: var(--space-4);
}

.logout-item:hover {
  background: #fee;
}

/* ===== MOBILE HEADER ===== */
.mobile-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  background: rgba(255, 255, 255, 0.95);
  -webkit-backdrop-filter: blur(12px);
  backdrop-filter: blur(12px);
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.08);
  z-index: var(--z-fixed);
  display: block;
  border-bottom: 1px solid rgba(0, 0, 0, 0.06);
}

@media (min-width: 1024px) {
  .mobile-header {
    display: none;
  }
}

body {
  padding-top: var(--mobile-nav-height);
  padding-bottom: var(--bottom-nav-height);
}

@media (min-width: 1024px) {
  body {
    padding-bottom: 0;
  }
}

.mobile-header-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--mobile-nav-height);
  padding: 0 var(--space-4);
  position: relative;
}

.mobile-header-logo {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-bold);
  color: var(--color-primary);
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.mobile-header-logo-icon {
  font-size: var(--font-size-2xl);
}

.mobile-header-search {
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: transparent;
  color: var(--color-primary);
  border: none;
  border-radius: 50%;
  cursor: pointer;
  font-size: var(--font-size-xl);
  transition: all var(--transition-fast);
}

.mobile-header-search:hover,
.mobile-header-search:focus {
  background-color: var(--color-gray-100);
  outline: none;
}

.mobile-header-search:active {
  transform: scale(0.95);
}

/* ===== BOTTOM NAVIGATION (Mobile) ===== */
.bottom-nav {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background-color: rgba(255, 255, 255, 0.98);
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
  border-top: 1px solid var(--color-gray-200);
  box-shadow: 0 -4px 12px rgba(0, 0, 0, 0.15);
  z-index: var(--z-fixed);
  display: block;
  padding-bottom: env(safe-area-inset-bottom, 0px);
}

@media (min-width: 1024px) {
  .bottom-nav {
    display: none;
  }
}

.bottom-nav-container {
  display: flex;
  justify-content: space-around;
  align-items: center;
  height: var(--bottom-nav-height);
  max-width: 600px;
  margin: 0 auto;
  padding: var(--space-2);
}

.bottom-nav-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--space-1);
  min-width: var(--touch-target-min);
  min-height: var(--touch-target-min);
  padding: var(--space-2);
  color: var(--color-gray-600);
  text-decoration: none;
  transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  border-radius: var(--radius-md);
  position: relative;
  cursor: pointer;
  -webkit-tap-highlight-color: transparent;
}

.bottom-nav-item:hover {
  background-color: var(--color-gray-50);
}

.bottom-nav-item:active {
  background-color: var(--color-gray-100);
  transform: scale(0.95);
}

.bottom-nav-item.active {
  color: var(--color-primary);
  font-weight: var(--font-weight-semibold);
}

.bottom-nav-icon {
  font-size: var(--font-size-2xl);
  transition: transform var(--transition-fast);
}

.bottom-nav-item.active .bottom-nav-icon {
  transform: scale(1.1);
}

.bottom-nav-label {
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-medium);
  line-height: 1;
}

/* Active indicator dot */
.bottom-nav-item.active::before {
  content: '';
  position: absolute;
  top: var(--space-1);
  width: 4px;
  height: 4px;
  background-color: var(--color-primary);
  border-radius: var(--radius-full);
}

/* Badge for notifications */
.bottom-nav-badge {
  position: absolute;
  top: var(--space-2);
  right: var(--space-2);
  min-width: 18px;
  height: 18px;
  padding: 0 4px;
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: var(--color-error);
  color: var(--color-white);
  font-size: 10px;
  font-weight: var(--font-weight-bold);
  border-radius: var(--radius-full);
  border: 2px solid var(--color-white);
}

/* ===== MOBILE MENU OVERLAY (for additional options) ===== */
.mobile-menu-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: rgba(0, 0, 0, 0.5);
  -webkit-backdrop-filter: blur(4px);
  backdrop-filter: blur(4px);
  z-index: var(--z-modal-backdrop);
  display: none;
  animation: fadeIn var(--transition-base);
}

.mobile-menu-overlay.active,
.mobile-menu-overlay:not(.hidden) {
  display: block;
}

.mobile-menu {
  position: fixed;
  bottom: var(--bottom-nav-height);
  left: 0;
  right: 0;
  background-color: var(--color-white);
  border-top-left-radius: var(--radius-2xl);
  border-top-right-radius: var(--radius-2xl);
  box-shadow: var(--shadow-xl);
  z-index: var(--z-modal);
  max-height: 70vh;
  overflow-y: auto;
  transform: translateY(100%);
  transition: transform var(--transition-base);
}

.mobile-menu.active,
.mobile-menu.mobile-menu-open {
  transform: translateY(0);
}

.mobile-menu-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-6) var(--space-4) var(--space-4);
  border-bottom: 1px solid var(--color-gray-200);
}

.mobile-menu-title {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-semibold);
  color: var(--color-gray-900);
  margin-bottom: 0;
}

.mobile-menu-list {
  padding: var(--space-4);
  list-style: none;
  margin: 0;
}

.mobile-menu-item {
  margin-bottom: var(--space-2);
}

.mobile-menu-link {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-4);
  min-height: var(--touch-target-min);
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-medium);
  color: var(--color-gray-700);
  background-color: var(--color-gray-50);
  border-radius: var(--radius-lg);
  transition: all var(--transition-fast);
}

.mobile-menu-link:hover {
  background-color: var(--color-gray-100);
  color: var(--color-primary);
}

.mobile-menu-icon {
  font-size: var(--font-size-xl);
  color: var(--color-primary);
}

/* ===== SEARCH BAR ===== */
.search-container {
  position: relative;
  width: 100%;
  max-width: 500px;
}

.search-input {
  width: 100%;
  height: var(--touch-target-min);
  padding: var(--space-3) var(--space-4) var(--space-3) var(--space-12);
  font-size: var(--font-size-base);
  font-family: var(--font-primary);
  color: var(--color-gray-900);
  background-color: var(--color-gray-50);
  border: 2px solid transparent;
  border-radius: var(--radius-full);
  transition: all var(--transition-fast);
}

.search-input:focus {
  outline: none;
  background-color: var(--color-white);
  border-color: var(--color-primary);
  box-shadow: var(--shadow-md);
}

.search-icon {
  position: absolute;
  left: var(--space-4);
  top: 50%;
  transform: translateY(-50%);
  font-size: var(--font-size-xl);
  color: var(--color-gray-400);
  pointer-events: none;
}

.search-input:focus+.search-icon {
  color: var(--color-primary);
}

/* ===== STICKY SCROLL EFFECTS ===== */
.mobile-header.scrolled,
.top-nav.scrolled {
  box-shadow: var(--shadow-md);
}

/* ===== SAFE AREA INSETS (iPhone notch, etc.) ===== */
@supports (padding-top: env(safe-area-inset-top)) {
  .mobile-header {
    padding-top: env(safe-area-inset-top);
    height: calc(var(--mobile-nav-height) + env(safe-area-inset-top));
  }

  .bottom-nav {
    padding-bottom: env(safe-area-inset-bottom);
    height: calc(var(--bottom-nav-height) + env(safe-area-inset-bottom));
  }

  body {
    padding-top: calc(var(--mobile-nav-height) + env(safe-area-inset-top));
    padding-bottom: calc(var(--bottom-nav-height) + env(safe-area-inset-bottom));
  }
}