/* ================= OPTIMIZED VARIABLES ================= */
:root {
  --primary: #2563eb;
  --primary-dark: #1d4ed8;
  --primary-light: #3b82f6;
  --success: #10b981;
  --success-dark: #059669;
  --danger: #ef4444;
  --warning: #f59e0b;
  --gray-50: #f8fafc;
  --gray-100: #f1f5f9;
  --gray-200: #e2e8f0;
  --gray-300: #cbd5e1;
  --gray-400: #94a3b8;
  --gray-500: #64748b;
  --gray-600: #475569;
  --gray-700: #334155;
  --gray-800: #1e293b;
  --gray-900: #0f172a;
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
  --radius: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  --backdrop: saturate(180%) blur(20px);
}

/* ================= PERFORMANCE OPTIMIZATIONS ================= */
.mobile-nav-container {
  position: fixed;
  bottom: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
  transform: translateZ(0);
  will-change: transform;
}

.mobile-nav {
  background: rgba(255, 255, 255, 0.98);
  backdrop-filter: var(--backdrop);
  -webkit-backdrop-filter: var(--backdrop);
  border-top: 1px solid var(--gray-200);
  padding: 8px 12px max(12px, env(safe-area-inset-bottom));
  box-shadow: 0 -4px 20px rgba(0, 0, 0, 0.08);
  will-change: transform;
}

.mobile-nav ul {
  display: flex;
  justify-content: space-around;
  list-style: none;
  margin: 0;
  padding: 0;
}

.mobile-nav li {
  flex: 1;
  text-align: center;
  min-width: 0;
}

.mobile-nav a {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-decoration: none;
  color: var(--gray-600);
  font-size: 11px;
  font-weight: 500;
  padding: 8px 4px;
  border-radius: var(--radius);
  transition: var(--transition);
  position: relative;
  will-change: transform, color;
  outline: none;
}

.mobile-nav a:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 2px;
}

.mobile-nav a:hover,
.mobile-nav a.active {
  color: var(--primary);
  transform: translateY(-1px);
}

.mobile-nav a.active {
  background: rgba(37, 99, 235, 0.08);
}

.mobile-nav a.active::after {
  content: '';
  position: absolute;
  top: -4px;
  left: 50%;
  transform: translateX(-50%);
  width: 4px;
  height: 4px;
  background: var(--primary);
  border-radius: 50%;
  animation: navPulse 2s ease-in-out infinite;
}

.mobile-nav a.special {
  color: var(--success);
  font-weight: 600;
  background: rgba(16, 185, 129, 0.08);
}

.mobile-nav a.special:hover,
.mobile-nav a.special:focus {
  color: var(--success-dark);
  background: rgba(16, 185, 129, 0.12);
  transform: translateY(-1px);
}

.nav-icon {
  width: 22px;
  height: 22px;
  margin-bottom: 4px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition);
  will-change: transform;
}

.mobile-nav a:hover .nav-icon,
.mobile-nav a.active .nav-icon,
.mobile-nav a:focus .nav-icon {
  transform: scale(1.15);
}

.nav-icon i {
  font-size: 18px;
  transition: var(--transition);
}

/* User Dashboard Menu */
.user-dashboard-menu {
  position: fixed;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 75vh;
  background: var(--gray-50);
  border-radius: var(--radius-xl) var(--radius-xl) 0 0;
  box-shadow: var(--shadow-xl);
  transform: translateY(100%);
  transition: transform 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
  z-index: 1001;
  overflow: hidden;
  will-change: transform;
}

.user-dashboard-menu.active {
  transform: translateY(0);
}

.menu-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px 24px;
  background: white;
  border-bottom: 1px solid var(--gray-200);
  position: sticky;
  top: 0;
  z-index: 1;
}

.menu-title {
  display: flex;
  align-items: center;
  gap: 12px;
}

.title-icon {
  width: 24px;
  height: 24px;
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
}

.title-icon i {
  font-size: 20px;
}

.menu-header h4 {
  font-size: 18px;
  font-weight: 600;
  color: var(--gray-800);
  margin: 0;
}

.close-menu {
  background: var(--gray-100);
  border: none;
  width: 36px;
  height: 36px;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: var(--transition);
  will-change: transform;
  outline: none;
}

.close-menu:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 2px;
}

.close-menu:hover {
  background: var(--gray-200);
  transform: rotate(90deg);
}

.close-menu i {
  font-size: 16px;
  color: var(--gray-600);
}

.menu-content {
  padding: 8px 0;
  height: calc(100% - 80px);
  overflow-y: auto;
}

.menu-content ul {
  list-style: none;
  margin: 0;
  padding: 0;
}

.menu-item {
  display: flex;
  align-items: center;
  padding: 16px 24px;
  text-decoration: none;
  color: var(--gray-700);
  font-weight: 500;
  transition: var(--transition);
  border-bottom: 1px solid var(--gray-100);
  outline: none;
  will-change: transform;
}

.menu-item:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: -2px;
}

.menu-item:hover {
  background: white;
  padding-left: 28px;
  transform: translateX(4px);
}

.menu-item.logout {
  color: var(--danger);
}

.item-icon {
  font-size: 18px;
  margin-right: 12px;
  width: 24px;
  text-align: center;
  transition: var(--transition);
}

.menu-item:hover .item-icon {
  transform: scale(1.1);
}

.item-text {
  flex: 1;
}

/* Modal Content Styles */
.modal-content-container {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 9998;
  display: none;
}

.modal-content-container.active {
  display: block;
}

.modal-content-backdrop {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.6);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  z-index: 9999;
  animation: fadeIn 0.3s ease;
  will-change: opacity;
}

.modal-content-wrapper {
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  background: white;
  border-radius: var(--radius-xl) var(--radius-xl) 0 0;
  animation: slideUp 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
  max-height: 85vh;
  overflow-y: auto;
  z-index: 10000;
  box-shadow: var(--shadow-xl);
  will-change: transform;
}

.modal-content-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 24px;
  border-bottom: 1px solid var(--gray-200);
  position: sticky;
  top: 0;
  background: white;
  z-index: 1;
  border-radius: var(--radius-xl) var(--radius-xl) 0 0;
}

.modal-content-title {
  display: flex;
  align-items: center;
  gap: 12px;
}

.modal-content-title .title-icon {
  background: var(--success);
  color: white;
  border-radius: 8px;
  padding: 6px;
}

.modal-content-title h3 {
  font-size: 20px;
  font-weight: 600;
  color: var(--gray-800);
  margin: 0;
}

.modal-content-close {
  background: var(--gray-100);
  border: none;
  width: 36px;
  height: 36px;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: var(--transition);
  will-change: transform;
  outline: none;
}

.modal-content-close:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 2px;
}

.modal-content-close:hover {
  background: var(--gray-200);
  transform: rotate(90deg);
}

.modal-content-close i {
  font-size: 16px;
  color: var(--gray-600);
}

.modal-content-body {
  padding: 24px;
}

.social-grid {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.social-card {
  display: flex;
  align-items: center;
  padding: 20px;
  background: white;
  border: 1px solid var(--gray-200);
  border-radius: var(--radius);
  text-decoration: none;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
  will-change: transform, box-shadow;
  outline: none;
}

.social-card:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 2px;
}

.social-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 4px;
  height: 100%;
  transform: scaleY(0);
  transition: transform 0.3s ease;
  will-change: transform;
}

.social-card.whatsapp::before {
  background: #25d366;
}

.social-card.instagram::before {
  background: linear-gradient(45deg, #f09433, #e6683c, #dc2743, #cc2366, #bc1888);
}

.social-card.gmail::before {
  background: #db4437;
}

.social-card:hover::before,
.social-card:focus::before {
  transform: scaleY(1);
}

.social-card:hover,
.social-card:focus {
  transform: translateY(-2px);
  box-shadow: var(--shadow);
  border-color: transparent;
}

.card-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-right: 16px;
  flex-shrink: 0;
  transition: var(--transition);
  will-change: transform;
}

.social-card:hover .card-icon,
.social-card:focus .card-icon {
  transform: scale(1.1) rotate(5deg);
}

.whatsapp .card-icon {
  background: rgba(37, 211, 102, 0.1);
  color: #25d366;
}

.instagram .card-icon {
  background: rgba(225, 48, 108, 0.1);
  color: #e1306c;
}

.gmail .card-icon {
  background: rgba(219, 68, 55, 0.1);
  color: #db4437;
}

.card-icon i {
  font-size: 20px;
}

.card-content {
  flex: 1;
}

.card-content h4 {
  font-size: 16px;
  font-weight: 600;
  color: var(--gray-800);
  margin: 0 0 4px 0;
}

.card-content p {
  font-size: 14px;
  color: var(--gray-600);
  margin: 0;
  line-height: 1.4;
}

.card-action {
  display: flex;
  align-items: center;
  color: var(--gray-500);
  transition: var(--transition);
  will-change: transform;
}

.social-card:hover .card-action,
.social-card:focus .card-action {
  color: var(--gray-700);
  transform: translateX(4px);
}

.card-action i {
  font-size: 16px;
}

/* Overlay */
.menu-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.5);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  z-index: 999;
  opacity: 0;
  visibility: hidden;
  transition: var(--transition-slow);
  will-change: opacity;
}

.menu-overlay.active {
  opacity: 1;
  visibility: visible;
}

/* Animations */
@keyframes slideUp {
  from {
    transform: translateY(100%);
  }
  to {
    transform: translateY(0);
  }
}

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

@keyframes navPulse {
  0%, 100% {
    opacity: 1;
    transform: translateX(-50%) scale(1);
  }
  50% {
    opacity: 0.8;
    transform: translateX(-50%) scale(1.2);
  }
}

/* Reduced Motion Support */
@media (prefers-reduced-motion: reduce) {
  .mobile-nav a,
  .nav-icon,
  .user-dashboard-menu,
  .modal-content-wrapper,
  .social-card,
  .menu-item {
    transition: none;
    animation: none;
  }
  
  .mobile-nav a:hover .nav-icon,
  .mobile-nav a.active .nav-icon {
    transform: none;
  }
}

/* Safe Area Insets for Notch Devices */
@supports(padding: max(0px)) {
  .mobile-nav {
    padding-bottom: max(12px, env(safe-area-inset-bottom));
  }
}

/* Desktop Hide */
@media (min-width: 992px) {
  .mobile-nav-container {
    display: none !important;
  }
}