/* 📱 MOBILE-FIRST DESIGN SYSTEM - HEALTH SOCIAL TRACKER */

/* ===== MOBILE-FIRST BREAKPOINTS ===== */
:root {
  /* Mobile-first breakpoints */
  --mobile-xs: 320px;    /* Small phones */
  --mobile-sm: 375px;    /* Standard phones */
  --mobile-md: 414px;    /* Large phones */
  --tablet-sm: 768px;    /* Small tablets */
  --tablet-md: 1024px;   /* Large tablets */
  --desktop-sm: 1280px;  /* Small desktops */
  --desktop-lg: 1440px;  /* Large desktops */
  
  /* Touch-friendly sizing */
  --touch-target-min: 44px;
  --touch-target-comfortable: 48px;
  --touch-spacing: 8px;
  
  /* Mobile-optimized spacing */
  --mobile-padding: 1rem;
  --mobile-margin: 0.75rem;
  --mobile-gap: 0.5rem;
}

/* ===== MOBILE-FIRST BASE STYLES ===== */
* {
  -webkit-tap-highlight-color: transparent;
  -webkit-touch-callout: none;
  -webkit-user-select: none;
  user-select: none;
  /* Improve scrolling performance */
  -webkit-overflow-scrolling: touch;
}

html {
  scroll-behavior: smooth;
  -webkit-overflow-scrolling: touch;
}

/* Ensure all scrollable containers have smooth scrolling */
.container, .container-fluid, .row, .col, main, .main-content {
  -webkit-overflow-scrolling: touch;
  overscroll-behavior: contain;
}

/* CRITICAL: Prevent any scroll interference */
html, body {
  -webkit-overflow-scrolling: touch;
  overscroll-behavior: none; /* Prevent pull-to-refresh and scroll chaining */
  scroll-behavior: smooth;
  touch-action: pan-y; /* Only allow vertical scrolling */
}

input, textarea, select {
  -webkit-user-select: text;
  user-select: text;
}

body {
  font-size: 16px; /* Prevent zoom on iOS */
  line-height: 1.5;
  -webkit-text-size-adjust: 100%;
  -ms-text-size-adjust: 100%;
  /* Optimize scrolling performance */
  -webkit-overflow-scrolling: touch;
  overscroll-behavior: none;
  scroll-behavior: smooth;
}

/* ===== MOBILE NAVIGATION ===== */
.navbar {
  min-height: 60px;
  padding: 0.5rem 0;
  box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

/* Mobile Navigation Enhancements */
@media (max-width: 991.98px) {
  .navbar {
    min-height: 56px;
    padding: 0.25rem 0;
  }
  
  .navbar-brand {
    font-size: 1.1rem;
    font-weight: 600;
  }
  
  .navbar-toggler {
    border: none;
    padding: 0.5rem;
    font-size: 1.2rem;
    border-radius: 8px;
    transition: all 0.3s ease;
  }
  
  .navbar-toggler:focus {
    box-shadow: 0 0 0 0.2rem rgba(102, 126, 234, 0.25);
  }
  
  .navbar-toggler:hover {
    background-color: rgba(255,255,255,0.1);
    transform: scale(1.05);
  }
  
  .navbar-collapse {
    background-color: rgba(33, 37, 41, 0.95);
    backdrop-filter: blur(10px);
    border-radius: 12px;
    margin-top: 0.5rem;
    padding: 1rem;
    box-shadow: 0 8px 32px rgba(0,0,0,0.3);
  }
  
  .navbar-nav {
    gap: 0.5rem;
  }
  
  .nav-item {
    margin: 0;
  }
  
  .nav-link {
    padding: 0.75rem 1rem;
    border-radius: 8px;
    font-weight: 500;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    min-height: 48px; /* Touch-friendly height */
  }
  
  .nav-link:hover {
    background-color: rgba(102, 126, 234, 0.1);
    transform: translateX(4px);
  }
  
  .nav-link.active {
    background-color: rgba(102, 126, 234, 0.2);
    color: #667eea;
  }
  
  .nav-link i {
    width: 20px;
    text-align: center;
    margin-right: 0.75rem;
  }
  
  /* Dropdown optimizations for mobile */
  .dropdown-menu {
    border: none;
    box-shadow: 0 8px 32px rgba(0,0,0,0.3);
    backdrop-filter: blur(10px);
    background-color: rgba(33, 37, 41, 0.95);
    border-radius: 12px;
    margin-top: 0.5rem;
  }
  
  .dropdown-item {
    padding: 0.75rem 1rem;
    border-radius: 8px;
    margin: 0.25rem;
    transition: all 0.3s ease;
    min-height: 44px;
    display: flex;
    align-items: center;
  }
  
  .dropdown-item:hover {
    background-color: rgba(102, 126, 234, 0.1);
    transform: translateX(4px);
  }
  
  .dropdown-item i {
    width: 20px;
    text-align: center;
    margin-right: 0.75rem;
  }
  
  /* Theme toggle mobile optimization */
  .theme-toggle {
    padding: 0.75rem;
    border-radius: 8px;
    transition: all 0.3s ease;
    min-height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
  }
  
  .theme-toggle:hover {
    background-color: rgba(102, 126, 234, 0.1);
    transform: scale(1.05);
  }
  
  /* Notification badge mobile optimization */
  .badge {
    font-size: 0.65em;
    padding: 0.35em 0.6em;
    min-width: 18px;
    height: 18px;
    display: flex;
    align-items: center;
    justify-content: center;
  }
}

/* Extra small mobile devices */
@media (max-width: 575.98px) {
  .navbar-brand {
    font-size: 1rem;
  }
  
  .navbar-brand i {
    font-size: 0.9rem;
  }
  
  .nav-link {
    padding: 0.6rem 0.8rem;
    font-size: 0.9rem;
  }
  
  .nav-link i {
    width: 18px;
    margin-right: 0.5rem;
  }
  
  .dropdown-item {
    padding: 0.6rem 0.8rem;
    font-size: 0.9rem;
  }
  
  .dropdown-item i {
    width: 18px;
    margin-right: 0.5rem;
  }
}

/* ===== MOBILE TOUCH FEEDBACK ===== */
.touch-active {
  transform: scale(0.95);
  opacity: 0.8;
  transition: all 0.1s ease;
}

/* Enhanced touch feedback for interactive elements */
.btn, .nav-link, .dropdown-item, .card, .form-control {
  transition: all 0.2s ease;
  -webkit-tap-highlight-color: transparent;
}

.btn:active, .nav-link:active, .dropdown-item:active {
  transform: scale(0.95);
  transition: all 0.1s ease;
}

/* Mobile-optimized buttons */
@media (max-width: 991.98px) {
  .btn {
    min-height: 44px;
    padding: 0.75rem 1rem;
    font-weight: 500;
    border-radius: 8px;
    transition: all 0.2s ease;
  }
  
  .btn:active {
    transform: scale(0.95);
  }
  
  .btn-sm {
    min-height: 40px;
    padding: 0.5rem 0.75rem;
  }
  
  .btn-lg {
    min-height: 48px;
    padding: 1rem 1.5rem;
    font-size: 1.1rem;
  }
}

/* Mobile-optimized cards */
@media (max-width: 991.98px) {
  .card {
    border-radius: 12px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
    transition: all 0.3s ease;
  }
  
  .card:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 16px rgba(0,0,0,0.15);
  }
  
  .card:active {
    transform: scale(0.98);
  }
  
  .card-body {
    padding: 1rem;
  }
}

/* Mobile-optimized form controls */
@media (max-width: 991.98px) {
  .form-control {
    min-height: 44px;
    padding: 0.75rem 1rem;
    font-size: 16px; /* Prevent zoom on iOS */
    border-radius: 8px;
    border: 2px solid #e9ecef;
    transition: all 0.3s ease;
  }
  
  .form-control:focus {
    border-color: #667eea;
    box-shadow: 0 0 0 0.2rem rgba(102, 126, 234, 0.25);
    transform: scale(1.02);
  }
  
  .form-label {
    font-weight: 500;
    margin-bottom: 0.5rem;
    font-size: 0.9rem;
  }
  
  .form-select {
    min-height: 44px;
    padding: 0.75rem 1rem;
    font-size: 16px;
    border-radius: 8px;
  }
}

/* Mobile-optimized tables */
@media (max-width: 991.98px) {
  .table-responsive {
    border-radius: 8px;
    overflow: hidden;
    -webkit-overflow-scrolling: touch;
  }
  
  .table {
    margin-bottom: 0;
    min-width: 600px; /* Ensure table has minimum width for horizontal scroll */
  }
  
  .table th, .table td {
    padding: 0.75rem 0.5rem;
    font-size: 0.9rem;
    vertical-align: middle;
    white-space: nowrap;
  }
  
  .table th {
    background-color: #f8f9fa;
    font-weight: 600;
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    position: sticky;
    top: 0;
    z-index: 10;
  }
  
  /* Mobile card layout for tables */
  .mobile-table-cards {
    display: none;
  }
  
  .mobile-table-cards .card {
    margin-bottom: 0.75rem;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
  }
  
  .mobile-table-cards .card-header {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 0.75rem 1rem;
    border-radius: 8px 8px 0 0;
  }
  
  .mobile-table-cards .card-body {
    padding: 1rem;
  }
  
  .mobile-card-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.5rem 0;
    border-bottom: 1px solid #e9ecef;
  }
  
  .mobile-card-row:last-child {
    border-bottom: none;
  }
  
  .mobile-card-label {
    font-weight: 600;
    color: #6c757d;
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
  }
  
  .mobile-card-value {
    font-weight: 500;
    color: #495057;
  }
  
  .mobile-card-actions {
    display: flex;
    gap: 0.5rem;
    margin-top: 0.75rem;
    padding-top: 0.75rem;
    border-top: 1px solid #e9ecef;
  }
  
  .mobile-card-actions .btn {
    flex: 1;
    padding: 0.5rem;
    font-size: 0.85rem;
  }
}

/* Extra small mobile devices - switch to card layout */
@media (max-width: 767.98px) {
  .table-responsive {
    display: none;
  }
  
  .mobile-table-cards {
    display: block;
  }
}

/* Dark mode adjustments for mobile tables */
[data-theme="dark"] .mobile-table-cards .card {
    background: #2d2d2d;
    border-color: #404040;
}

[data-theme="dark"] .mobile-card-row {
    border-bottom-color: #404040;
}

[data-theme="dark"] .mobile-card-label {
    color: #adb5bd;
}

[data-theme="dark"] .mobile-card-value {
    color: #e9ecef;
}

[data-theme="dark"] .mobile-card-actions {
    border-top-color: #404040;
}

.navbar-brand {
  font-size: 1.25rem;
  font-weight: 700;
}

.navbar-toggler {
  width: var(--touch-target-comfortable);
  height: var(--touch-target-comfortable);
  padding: 0;
  border: none;
  border-radius: var(--radius-md);
  background: transparent;
  transition: all var(--transition-normal);
}

.navbar-toggler:focus {
  box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.25);
  outline: none;
}

.navbar-toggler:hover {
  background: rgba(102, 126, 234, 0.1);
}

.navbar-toggler-icon {
  width: 24px;
  height: 3px;
  background: var(--primary-gradient);
  border-radius: 2px;
  position: relative;
  transition: all var(--transition-normal);
}

.navbar-toggler-icon::before,
.navbar-toggler-icon::after {
  content: '';
  position: absolute;
  width: 24px;
  height: 3px;
  background: var(--primary-gradient);
  border-radius: 2px;
  transition: all var(--transition-normal);
}

.navbar-toggler-icon::before {
  top: -8px;
}

.navbar-toggler-icon::after {
  bottom: -8px;
}

/* Mobile navigation menu */
.navbar-collapse {
  background: rgba(255, 255, 255, 0.98);
  backdrop-filter: blur(20px);
  border-radius: var(--radius-lg);
  margin-top: 0.5rem;
  padding: 1rem;
  box-shadow: var(--shadow-lg);
  border: 1px solid rgba(255, 255, 255, 0.2);
}

.navbar-nav {
  gap: 0.25rem;
}

.nav-item {
  margin-bottom: 0.25rem;
}

.nav-link {
  display: flex;
  align-items: center;
  padding: 0.75rem 1rem !important;
  min-height: var(--touch-target-comfortable);
  border-radius: var(--radius-md);
  font-weight: 500;
  transition: all var(--transition-normal);
  position: relative;
}

.nav-link:hover {
  background: rgba(102, 126, 234, 0.1);
  transform: translateX(4px);
}

.nav-link.active {
  background: var(--primary-gradient);
  color: white !important;
  box-shadow: var(--shadow-md);
}

.nav-link i {
  width: 20px;
  text-align: center;
  margin-right: 0.75rem;
}

/* Mobile dropdown improvements */
.dropdown-menu {
  border: none;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-xl);
  backdrop-filter: blur(20px);
  background: rgba(255, 255, 255, 0.95);
  margin-top: 0.5rem;
}

.dropdown-item {
  padding: 0.75rem 1rem;
  min-height: var(--touch-target-comfortable);
  display: flex;
  align-items: center;
  transition: all var(--transition-normal);
}

.dropdown-item:hover {
  background: rgba(102, 126, 234, 0.1);
  transform: translateX(4px);
}

.dropdown-item i {
  width: 20px;
  text-align: center;
  margin-right: 0.75rem;
}

/* ===== MOBILE CARDS ===== */
.card {
  border-radius: var(--radius-xl);
  margin-bottom: 1rem;
  overflow: hidden;
  transition: all var(--transition-normal);
}

.card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-xl);
}

.card-header {
  padding: 1rem;
  font-size: 1.1rem;
  font-weight: 600;
}

.card-body {
  padding: 1rem;
}

.card-footer {
  padding: 0.75rem 1rem;
  background: rgba(248, 249, 250, 0.5);
  border-top: 1px solid rgba(0, 0, 0, 0.05);
}

/* Mobile stats cards */
.stats-card {
  padding: 1.5rem 1rem;
  text-align: center;
  border-radius: var(--radius-xl);
  margin-bottom: 1rem;
  position: relative;
  overflow: hidden;
}

.stats-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: var(--primary-gradient);
}

.stats-number {
  font-size: 2rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
  background: var(--primary-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.stats-label {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--gray-600);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

/* ===== MOBILE FORMS ===== */
.form-group {
  margin-bottom: 1.5rem;
}

.form-label {
  font-weight: 600;
  color: var(--gray-700);
  margin-bottom: 0.5rem;
  display: block;
  font-size: 0.95rem;
}

.form-control {
  width: 100%;
  padding: 0.875rem 1rem;
  font-size: 16px; /* Prevent zoom on iOS */
  border: 2px solid var(--gray-200);
  border-radius: var(--radius-lg);
  background: rgba(255, 255, 255, 0.9);
  transition: all var(--transition-normal);
  min-height: var(--touch-target-comfortable);
}

.form-control:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
  background: white;
  outline: none;
}

.form-control::placeholder {
  color: var(--gray-400);
  font-weight: 400;
}

/* Mobile form buttons */
.btn {
  min-height: var(--touch-target-comfortable);
  padding: 0.75rem 1.5rem;
  font-weight: 600;
  border-radius: var(--radius-lg);
  font-size: 1rem;
  transition: all var(--transition-normal);
  position: relative;
  overflow: hidden;
  border: none;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
}

.btn:active {
  transform: scale(0.98);
}

.btn-primary {
  background: var(--primary-gradient);
  color: white;
  box-shadow: var(--shadow-md);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.btn-secondary {
  background: var(--secondary-gradient);
  color: white;
}

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

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

/* Mobile form layouts */
.form-row {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.form-row .form-group {
  margin-bottom: 0;
}

/* ===== MOBILE DASHBOARD LAYOUT ===== */
.dashboard-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
  padding: 1rem;
}

.dashboard-section {
  background: rgba(255, 255, 255, 0.9);
  border-radius: var(--radius-xl);
  padding: 1.5rem;
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.2);
  box-shadow: var(--shadow-lg);
}

.dashboard-section h3 {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 1rem;
  color: var(--gray-800);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.dashboard-section h3 i {
  color: var(--primary);
}

/* Mobile progress bars */
.progress {
  height: 16px;
  border-radius: var(--radius-lg);
  background: var(--gray-200);
  overflow: hidden;
  margin-bottom: 1rem;
}

.progress-bar {
  background: var(--primary-gradient);
  border-radius: var(--radius-lg);
  transition: width 1.5s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative;
  overflow: hidden;
}

.progress-bar::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
  animation: shimmer 2s infinite;
}

/* ===== MOBILE TABLES ===== */
.table-responsive {
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-md);
}

.table {
  margin-bottom: 0;
  font-size: 0.9rem;
}

.table th {
  background: var(--primary-gradient);
  color: white;
  font-weight: 600;
  padding: 1rem 0.75rem;
  border: none;
  font-size: 0.875rem;
}

.table td {
  padding: 0.875rem 0.75rem;
  border-top: 1px solid var(--gray-200);
  vertical-align: middle;
}

.table tbody tr:hover {
  background: rgba(102, 126, 234, 0.05);
}

/* Mobile table actions */
.table-actions {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.table-actions .btn {
  padding: 0.5rem 0.75rem;
  font-size: 0.875rem;
  min-height: auto;
}

/* ===== MOBILE MODALS ===== */
.modal-dialog {
  margin: 1rem;
  max-width: calc(100% - 2rem);
}

.modal-content {
  border-radius: var(--radius-xl);
  border: none;
  box-shadow: var(--shadow-xl);
  backdrop-filter: blur(20px);
}

.modal-header {
  border-bottom: 1px solid var(--gray-200);
  padding: 1.5rem 1.5rem 1rem;
}

.modal-title {
  font-size: 1.25rem;
  font-weight: 700;
}

.modal-body {
  padding: 1.5rem;
}

.modal-footer {
  border-top: 1px solid var(--gray-200);
  padding: 1rem 1.5rem 1.5rem;
  gap: 0.75rem;
  display: flex;
  flex-wrap: wrap;
}

/* ===== MOBILE ALERTS ===== */
.alert {
  border-radius: var(--radius-lg);
  padding: 1rem;
  margin-bottom: 1rem;
  border: none;
  font-weight: 500;
}

.alert-dismissible .btn-close {
  padding: 0.75rem;
  font-size: 1.25rem;
}

/* ===== MOBILE UTILITIES ===== */
.text-center-mobile {
  text-align: center;
}

.text-left-mobile {
  text-align: left;
}

.text-right-mobile {
  text-align: right;
}

.hidden-mobile {
  display: none;
}

.visible-mobile {
  display: block;
}

/* Mobile spacing utilities */
.mb-mobile-1 { margin-bottom: 0.25rem; }
.mb-mobile-2 { margin-bottom: 0.5rem; }
.mb-mobile-3 { margin-bottom: 1rem; }
.mb-mobile-4 { margin-bottom: 1.5rem; }
.mb-mobile-5 { margin-bottom: 2rem; }

.mt-mobile-1 { margin-top: 0.25rem; }
.mt-mobile-2 { margin-top: 0.5rem; }
.mt-mobile-3 { margin-top: 1rem; }
.mt-mobile-4 { margin-top: 1.5rem; }
.mt-mobile-5 { margin-top: 2rem; }

.p-mobile-1 { padding: 0.25rem; }
.p-mobile-2 { padding: 0.5rem; }
.p-mobile-3 { padding: 1rem; }
.p-mobile-4 { padding: 1.5rem; }
.p-mobile-5 { padding: 2rem; }

/* ===== MOBILE ANIMATIONS ===== */
@keyframes slideInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeInScale {
  from {
    opacity: 0;
    transform: scale(0.95);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

.animate-slide-in-up {
  animation: slideInUp 0.4s ease-out;
}

.animate-fade-in-scale {
  animation: fadeInScale 0.3s ease-out;
}

/* ===== RESPONSIVE BREAKPOINTS ===== */

/* Small phones (320px - 374px) */
@media (max-width: 374px) {
  .container {
    padding-left: 0.75rem;
    padding-right: 0.75rem;
  }
  
  .card-body {
    padding: 0.75rem;
  }
  
  .stats-card {
    padding: 1rem 0.75rem;
  }
  
  .stats-number {
    font-size: 1.75rem;
  }
  
  .btn {
    padding: 0.625rem 1.25rem;
    font-size: 0.9rem;
  }
}

/* Standard phones (375px - 413px) */
@media (min-width: 375px) and (max-width: 413px) {
  .container {
    padding-left: 1rem;
    padding-right: 1rem;
  }
}

/* Large phones (414px - 767px) */
@media (min-width: 414px) and (max-width: 767px) {
  .container {
    padding-left: 1.25rem;
    padding-right: 1.25rem;
  }
  
  .dashboard-grid {
    padding: 1.25rem;
  }
  
  .stats-number {
    font-size: 2.25rem;
  }
}

/* Small tablets (768px - 1023px) */
@media (min-width: 768px) and (max-width: 1023px) {
  .dashboard-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 1.5rem;
  }
  
  .navbar-collapse {
    background: transparent;
    backdrop-filter: none;
    border-radius: 0;
    margin-top: 0;
    padding: 0;
    box-shadow: none;
    border: none;
  }
  
  .navbar-nav {
    flex-direction: row;
    gap: 0.5rem;
  }
  
  .nav-link {
    padding: 0.5rem 0.75rem !important;
    min-height: auto;
  }
  
  .stats-card {
    padding: 2rem 1.5rem;
  }
  
  .stats-number {
    font-size: 2.5rem;
  }
}

/* Large tablets and small desktops (1024px+) */
@media (min-width: 1024px) {
  .dashboard-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
  }
  
  .navbar-toggler {
    display: none;
  }
  
  .navbar-collapse {
    display: flex !important;
    background: transparent;
    backdrop-filter: none;
    border-radius: 0;
    margin-top: 0;
    padding: 0;
    box-shadow: none;
    border: none;
  }
  
  .navbar-nav {
    flex-direction: row;
    gap: 0.75rem;
  }
  
  .nav-link {
    padding: 0.75rem 1rem !important;
    min-height: auto;
  }
  
  .stats-card {
    padding: 2.5rem 2rem;
  }
  
  .stats-number {
    font-size: 3rem;
  }
}

/* ===== DARK MODE MOBILE ===== */
[data-theme="dark"] .navbar-collapse {
  background: rgba(26, 26, 26, 0.98);
  border-color: var(--border-color);
}

[data-theme="dark"] .nav-link {
  color: var(--text-secondary) !important;
}

[data-theme="dark"] .nav-link:hover {
  background: rgba(102, 126, 234, 0.2);
  color: var(--text-primary) !important;
}

[data-theme="dark"] .nav-link.active {
  background: var(--primary-gradient);
  color: white !important;
}

[data-theme="dark"] .dropdown-menu {
  background: rgba(26, 26, 26, 0.95);
  border-color: var(--border-color);
}

[data-theme="dark"] .dropdown-item {
  color: var(--text-secondary);
}

[data-theme="dark"] .dropdown-item:hover {
  background: rgba(102, 126, 234, 0.2);
  color: var(--text-primary);
}

[data-theme="dark"] .card {
  background: var(--card-bg);
  border-color: var(--border-color);
}

[data-theme="dark"] .dashboard-section {
  background: var(--card-bg);
  border-color: var(--border-color);
}

[data-theme="dark"] .form-control {
  background: var(--bg-secondary);
  border-color: var(--border-color);
  color: var(--text-primary);
}

[data-theme="dark"] .form-control:focus {
  background: var(--bg-tertiary);
  border-color: var(--primary);
  color: var(--text-primary);
}

[data-theme="dark"] .table th {
  background: var(--primary-gradient);
  color: white;
}

[data-theme="dark"] .table td {
  color: var(--text-primary);
  border-color: var(--border-color);
}

[data-theme="dark"] .table tbody tr:hover {
  background: rgba(102, 126, 234, 0.1);
}

[data-theme="dark"] .modal-content {
  background: var(--card-bg);
  border-color: var(--border-color);
}

[data-theme="dark"] .modal-header {
  border-color: var(--border-color);
}

[data-theme="dark"] .modal-footer {
  border-color: var(--border-color);
}

[data-theme="dark"] .alert {
  background: var(--bg-secondary);
  color: var(--text-primary);
  border-color: var(--border-color);
}

/* ===== ACCESSIBILITY IMPROVEMENTS ===== */
@media (prefers-reduced-motion: reduce) {
  * {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

/* Focus indicators for keyboard navigation */
.btn:focus,
.nav-link:focus,
.form-control:focus,
.dropdown-item:focus {
  outline: 2px solid var(--primary);
  outline-offset: 2px;
}

/* High contrast mode support */
@media (prefers-contrast: high) {
  .card {
    border: 2px solid var(--gray-800);
  }
  
  .btn {
    border: 2px solid currentColor;
  }
  
  .form-control {
    border: 2px solid var(--gray-800);
  }
}

/* ===== PRINT STYLES ===== */
@media print {
  .navbar,
  .btn,
  .modal,
  .dropdown {
    display: none !important;
  }
  
  .card {
    box-shadow: none;
    border: 1px solid #000;
  }
  
  .stats-card {
    break-inside: avoid;
  }
}

/* ===== MOBILE PERFORMANCE OPTIMIZATIONS ===== */

/* Lazy Loading */
.lazy-load {
  opacity: 0;
  transition: opacity 0.3s ease-in-out;
}

.lazy-load.loaded {
  opacity: 1;
}

.lazy-load-placeholder {
  background: linear-gradient(90deg, #f0f0f0 25%, #e0e0e0 50%, #f0f0f0 75%);
  background-size: 200% 100%;
  animation: loading-shimmer 1.5s infinite;
}

@keyframes loading-shimmer {
  0% { background-position: -200% 0; }
  100% { background-position: 200% 0; }
}

/* Progressive Loading */
.progressive-loading {
  position: relative;
  overflow: hidden;
}

.progressive-loading::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.4), transparent);
  animation: progressive-loading 2s infinite;
}

@keyframes progressive-loading {
  0% { left: -100%; }
  100% { left: 100%; }
}

/* Image Optimization */
.optimized-image {
  width: 100%;
  height: auto;
  object-fit: cover;
  border-radius: 8px;
  transition: transform 0.3s ease;
}

.optimized-image:hover {
  transform: scale(1.02);
}

/* Performance Indicators */
.performance-indicator {
  position: fixed;
  top: 10px;
  left: 10px;
  background: rgba(0,0,0,0.8);
  color: white;
  padding: 5px 10px;
  border-radius: 15px;
  font-size: 12px;
  z-index: 10000;
  opacity: 0;
  transition: opacity 0.3s ease;
}

.performance-indicator.show {
  opacity: 1;
}

/* Mobile-Specific Performance */
.mobile-optimized {
  will-change: transform;
  backface-visibility: hidden;
  perspective: 1000px;
}

/* Reduced Motion Support */
@media (prefers-reduced-motion: reduce) {
  .lazy-load,
  .progressive-loading::before,
  .optimized-image,
  .performance-indicator {
    transition: none;
    animation: none;
  }
  
  .lazy-load-placeholder {
    animation: none;
    background: #f0f0f0;
  }
}

/* Dark mode adjustments for performance elements */
[data-theme="dark"] .lazy-load-placeholder {
  background: linear-gradient(90deg, #404040 25%, #505050 50%, #404040 75%);
}

[data-theme="dark"] .progressive-loading::before {
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.1), transparent);
}

/* ===== ENHANCED MOBILE DASHBOARD ===== */

/* Enhanced Stats Cards */
.stats-card {
  position: relative;
  overflow: hidden;
  transition: all 0.3s ease;
}

.stats-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 25px rgba(0,0,0,0.15);
}

.stats-card .stats-trend {
  display: flex;
  align-items: center;
  gap: 0.25rem;
  margin-top: 0.5rem;
  font-size: 0.75rem;
}

.stats-card .stats-trend i {
  font-size: 0.7rem;
}

/* Enhanced Quick Action Buttons */
.btn.mobile-optimized {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 1rem 0.5rem;
  min-height: 80px;
  border-radius: 16px;
  transition: all 0.3s ease;
  overflow: hidden;
}

.btn.mobile-optimized .btn-icon {
  font-size: 1.5rem;
  margin-bottom: 0.5rem;
  transition: all 0.3s ease;
}

.btn.mobile-optimized .btn-text {
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 0.25rem;
}

.btn.mobile-optimized .btn-badge {
  position: absolute;
  top: 8px;
  right: 8px;
  background: rgba(255,255,255,0.9);
  color: #333;
  font-size: 0.7rem;
  font-weight: 700;
  padding: 2px 6px;
  border-radius: 10px;
  min-width: 18px;
  height: 18px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.btn.mobile-optimized:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(0,0,0,0.15);
}

.btn.mobile-optimized:hover .btn-icon {
  transform: scale(1.1);
}

.btn.mobile-optimized:active {
  transform: translateY(0);
}

/* Enhanced Table Mobile Cards */
.mobile-table-cards .card {
  transition: all 0.3s ease;
  border: none;
  box-shadow: 0 2px 8px rgba(0,0,0,0.1);
}

.mobile-table-cards .card:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 16px rgba(0,0,0,0.15);
}

.mobile-table-cards .card-header {
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  color: white;
  border: none;
  padding: 1rem;
  border-radius: 12px 12px 0 0;
}

.mobile-table-cards .card-body {
  padding: 1.25rem;
}

.mobile-card-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.75rem 0;
  border-bottom: 1px solid #e9ecef;
  transition: all 0.2s ease;
}

.mobile-card-row:hover {
  background: rgba(102, 126, 234, 0.05);
  padding-left: 0.5rem;
  padding-right: 0.5rem;
  border-radius: 8px;
}

.mobile-card-row:last-child {
  border-bottom: none;
}

.mobile-card-label {
  font-weight: 600;
  color: #6c757d;
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  min-width: 80px;
}

.mobile-card-value {
  font-weight: 500;
  color: #495057;
  text-align: right;
  flex: 1;
}

.mobile-card-actions {
  display: flex;
  gap: 0.5rem;
  margin-top: 1rem;
  padding-top: 1rem;
  border-top: 1px solid #e9ecef;
}

.mobile-card-actions .btn {
  flex: 1;
  padding: 0.75rem;
  font-size: 0.85rem;
  border-radius: 8px;
  transition: all 0.3s ease;
}

.mobile-card-actions .btn:hover {
  transform: translateY(-1px);
}

/* Enhanced Post Previews */
.post-preview {
  transition: all 0.3s ease;
  border-radius: 12px;
  padding: 1rem;
  margin-bottom: 1rem;
}

.post-preview:hover {
  background: rgba(102, 126, 234, 0.05);
  transform: translateX(4px);
}

.post-avatar img {
  transition: all 0.3s ease;
}

.post-preview:hover .post-avatar img {
  transform: scale(1.1);
}

.post-actions .btn {
  transition: all 0.3s ease;
}

.post-actions .btn:hover {
  transform: translateY(-1px);
}

.like-btn.liked {
  background: #e74c3c !important;
  border-color: #e74c3c !important;
  color: white !important;
}

.like-btn.liked i {
  color: white !important;
}

/* Enhanced Health Tips */
.tip-item {
  transition: all 0.3s ease;
  padding: 1rem;
  border-radius: 12px;
  border-left: 4px solid transparent;
}

.tip-item:hover {
  background: rgba(102, 126, 234, 0.05);
  border-left-color: #667eea;
  transform: translateX(4px);
}

.tip-icon {
  transition: all 0.3s ease;
}

.tip-item:hover .tip-icon {
  transform: scale(1.2);
}

/* Enhanced Progress Bars */
.progress {
  height: 8px;
  border-radius: 10px;
  background: rgba(0,0,0,0.1);
  overflow: hidden;
}

.progress-bar {
  background: linear-gradient(90deg, #667eea 0%, #764ba2 100%);
  border-radius: 10px;
  transition: width 1.5s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative;
  overflow: hidden;
}

.progress-bar::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.4), transparent);
  animation: progress-shimmer 2s infinite;
}

@keyframes progress-shimmer {
  0% { left: -100%; }
  100% { left: 100%; }
}

/* Enhanced BMI Chart Container */
.bmi-chart {
  position: relative;
  background: rgba(255,255,255,0.9);
  border-radius: 12px;
  padding: 1rem;
  margin-top: 1rem;
  box-shadow: 0 2px 8px rgba(0,0,0,0.1);
}

.current-bmi {
  position: relative;
  display: inline-block;
}

.current-bmi .display-4 {
  font-size: 3rem;
  font-weight: 700;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* Dark mode adjustments for enhanced elements */
[data-theme="dark"] .stats-card:hover {
  box-shadow: 0 8px 25px rgba(0,0,0,0.3);
}

[data-theme="dark"] .btn.mobile-optimized .btn-badge {
  background: rgba(255,255,255,0.2);
  color: #e2e8f0;
}

[data-theme="dark"] .mobile-table-cards .card {
  background: #2d2d2d;
  box-shadow: 0 2px 8px rgba(0,0,0,0.3);
}

[data-theme="dark"] .mobile-table-cards .card:hover {
  box-shadow: 0 4px 16px rgba(0,0,0,0.4);
}

[data-theme="dark"] .mobile-card-row {
  border-bottom-color: #404040;
}

[data-theme="dark"] .mobile-card-row:hover {
  background: rgba(102, 126, 234, 0.1);
}

[data-theme="dark"] .mobile-card-label {
  color: #adb5bd;
}

[data-theme="dark"] .mobile-card-value {
  color: #e9ecef;
}

[data-theme="dark"] .mobile-card-actions {
  border-top-color: #404040;
}

[data-theme="dark"] .post-preview:hover {
  background: rgba(102, 126, 234, 0.1);
}

[data-theme="dark"] .tip-item:hover {
  background: rgba(102, 126, 234, 0.1);
}

[data-theme="dark"] .bmi-chart {
  background: rgba(45, 45, 45, 0.9);
}

/* ===== BEAUTIFUL EMPTY STATES ===== */

.empty-state-container {
  position: relative;
  min-height: 300px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 16px;
  overflow: hidden;
  margin: 2rem 0;
}

.empty-state-background {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(135deg, 
    rgba(102, 126, 234, 0.1) 0%, 
    rgba(118, 75, 162, 0.1) 50%, 
    rgba(102, 126, 234, 0.1) 100%);
  background-size: 200% 200%;
  animation: gradient-shift 8s ease infinite;
}

@keyframes gradient-shift {
  0% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
  100% { background-position: 0% 50%; }
}

.empty-state-background::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: 
    radial-gradient(circle at 20% 20%, rgba(102, 126, 234, 0.1) 0%, transparent 50%),
    radial-gradient(circle at 80% 80%, rgba(118, 75, 162, 0.1) 0%, transparent 50%),
    radial-gradient(circle at 40% 60%, rgba(102, 126, 234, 0.05) 0%, transparent 50%);
  animation: float-particles 12s ease-in-out infinite;
}

@keyframes float-particles {
  0%, 100% { transform: translateY(0px) rotate(0deg); }
  33% { transform: translateY(-10px) rotate(120deg); }
  66% { transform: translateY(5px) rotate(240deg); }
}

.empty-state-content {
  position: relative;
  z-index: 2;
  text-align: center;
  padding: 3rem 2rem;
  max-width: 500px;
}

.empty-state-icon {
  font-size: 4rem;
  color: #667eea;
  margin-bottom: 1.5rem;
  animation: pulse-glow 2s ease-in-out infinite;
  text-shadow: 0 0 20px rgba(102, 126, 234, 0.3);
}

@keyframes pulse-glow {
  0%, 100% { 
    transform: scale(1);
    text-shadow: 0 0 20px rgba(102, 126, 234, 0.3);
  }
  50% { 
    transform: scale(1.1);
    text-shadow: 0 0 30px rgba(102, 126, 234, 0.6);
  }
}

.empty-state-title {
  font-size: 1.75rem;
  font-weight: 700;
  color: #2d3748;
  margin-bottom: 1rem;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.empty-state-description {
  font-size: 1.1rem;
  color: #718096;
  line-height: 1.6;
  margin-bottom: 2rem;
}

.empty-state-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  justify-content: center;
  align-items: center;
}

.empty-state-actions .btn {
  padding: 0.875rem 1.5rem;
  border-radius: 12px;
  font-weight: 600;
  transition: all 0.3s ease;
  box-shadow: 0 4px 15px rgba(0,0,0,0.1);
}

.empty-state-actions .btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(0,0,0,0.15);
}

/* Mobile responsiveness for empty states */
@media (max-width: 768px) {
  .empty-state-container {
    min-height: 250px;
    margin: 1.5rem 0;
  }
  
  .empty-state-content {
    padding: 2rem 1rem;
  }
  
  .empty-state-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
  }
  
  .empty-state-title {
    font-size: 1.5rem;
    margin-bottom: 0.75rem;
  }
  
  .empty-state-description {
    font-size: 1rem;
    margin-bottom: 1.5rem;
  }
  
  .empty-state-actions {
    flex-direction: column;
    gap: 0.75rem;
  }
  
  .empty-state-actions .btn {
    width: 100%;
    max-width: 200px;
  }
}

/* Dark mode adjustments for empty states */
[data-theme="dark"] .empty-state-background {
  background: linear-gradient(135deg, 
    rgba(102, 126, 234, 0.15) 0%, 
    rgba(118, 75, 162, 0.15) 50%, 
    rgba(102, 126, 234, 0.15) 100%);
}

[data-theme="dark"] .empty-state-background::before {
  background: 
    radial-gradient(circle at 20% 20%, rgba(102, 126, 234, 0.2) 0%, transparent 50%),
    radial-gradient(circle at 80% 80%, rgba(118, 75, 162, 0.2) 0%, transparent 50%),
    radial-gradient(circle at 40% 60%, rgba(102, 126, 234, 0.1) 0%, transparent 50%);
}

[data-theme="dark"] .empty-state-title {
  color: #e2e8f0;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

[data-theme="dark"] .empty-state-description {
  color: #a0aec0;
}