:root {
  /* New Color Scheme */
  --primary-blue: #0A2A4C;
  --accent-yellow: #F4C000;
  --background-white: #FFFFFF;
  --card-soft-white: #F8F8F8;
  
  /* Extended colors for consistency */
  --dark-blue: #083057;
  --white: #FFFFFF;
  --light-gray: #F8F8F8;
  --dark-gray: #374151;
  --medium-gray: #6B7280;
  --green: #10B981;
  --red: #EF4444;
  --yellow: #F4C000;
  
  /* Semantic Variables */
  --primary-color: var(--primary-blue);
  --secondary-color: var(--medium-gray);
  --accent-color: var(--accent-yellow);
  --background-color: var(--background-white);
  --surface-color: var(--card-soft-white);
  --text-primary: var(--dark-gray);
  --text-secondary: var(--medium-gray);
  --text-muted: #9CA3AF;
  --border-color: #E5E7EB;
  --success-color: var(--green);
  --danger-color: var(--red);
  --navy-blue: var(--primary-blue);
  --shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px 0 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);
}

[data-theme="dark"] {
  --background-color: #111827;
  --surface-color: #1F2937;
  --text-primary: #F9FAFB;
  --text-secondary: #D1D5DB;
  --text-muted: #6B7280;
  --border-color: #374151;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: 'Inter', sans-serif;
  background-color: var(--background-color);
  color: var(--text-primary);
  line-height: 1.6;
  transition: all 0.3s ease;
}

#app {
  min-height: 100vh;
  background: var(--background-color);
  max-width: 100%;
  overflow-x: hidden;
}

/* Loading */
.loading {
  display: flex;
  justify-content: center;
  align-items: center;
  height: 100vh;
  font-size: 1.125rem;
  gap: 0.75rem;
  color: var(--text-secondary);
}

/* Auth Styles */
.auth-container {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--primary-blue) 0%, var(--dark-blue) 100%);
  padding: 1rem;
}

.auth-card {
  background: var(--background-color);
  padding: 2rem;
  border-radius: 1rem;
  box-shadow: var(--shadow-lg);
  width: 100%;
  max-width: 400px;
  border: 1px solid var(--border-color);
}

.auth-card h2 {
  text-align: center;
  margin-bottom: 2rem;
  color: var(--primary-blue);
  font-weight: 700;
  font-size: 1.75rem;
}

.form-group {
  margin-bottom: 1.5rem;
}

.form-group label {
  display: block;
  margin-bottom: 0.5rem;
  font-weight: 500;
  color: var(--text-primary);
}

.form-control {
  width: 100%;
  padding: 0.75rem 1rem;
  border: 1px solid var(--border-color);
  border-radius: 0.5rem;
  font-size: 1rem;
  transition: all 0.2s;
  background: var(--background-color);
  color: var(--text-primary);
}

.form-control:focus {
  outline: none;
  border-color: var(--primary-blue);
  box-shadow: 0 0 0 3px rgba(10, 42, 76, 0.1);
}

.form-control::placeholder {
  color: var(--text-muted);
}

.btn {
  width: 100%;
  padding: 0.75rem 1rem;
  border: none;
  border-radius: 0.5rem;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.3s ease;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  position: relative;
  overflow: hidden;
}

.btn::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
  transition: left 0.5s;
}

.btn:hover::before {
  left: 100%;
}

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

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

.btn-secondary {
  background: var(--surface-color);
  color: var(--text-primary);
  border: 1px solid var(--border-color);
}

.btn-secondary:hover {
  background: var(--background-color);
  border-color: var(--primary-blue);
  transform: translateY(-2px);
}

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

.btn-danger:hover {
  background: #DC2626;
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.auth-switch {
  text-align: center;
  margin-top: 1.5rem;
  color: var(--text-secondary);
  font-size: 0.95rem;
}

.auth-switch a {
  color: var(--primary-blue);
  text-decoration: none;
  font-weight: 500;
  transition: color 0.2s;
}

.auth-switch a:hover {
  color: var(--dark-blue);
  text-decoration: underline;
}

/* Header Styles */
.app-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem;
  background: var(--primary-blue);
  color: var(--white);
  position: sticky;
  top: 0;
  z-index: 1000;
  box-shadow: var(--shadow);
  min-height: 60px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-weight: 700;
  font-size: 1.25rem;
  cursor: pointer;
}

.logo i {
  color: var(--accent-yellow);
}

.header-actions {
  display: flex;
  gap: 0.5rem;
  position: relative;
}

.header-btn {
  background: none;
  border: none;
  color: var(--white);
  font-size: 1.1rem;
  cursor: pointer;
  padding: 0.5rem;
  border-radius: 0.5rem;
  transition: background-color 0.2s;
  position: relative;
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.header-btn:hover {
  background: rgba(255, 255, 255, 0.1);
}

.notification-badge {
  position: absolute;
  top: 2px;
  right: 2px;
  background: var(--danger-color);
  color: var(--white);
  border-radius: 50%;
  width: 18px;
  height: 18px;
  font-size: 0.7rem;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 600;
  border: 2px solid var(--primary-blue);
}

/* Main Content */
.main-content {
  padding-bottom: 80px;
  min-height: calc(100vh - 140px);
}

.page {
  display: none;
  padding: 1rem;
  animation: fadeIn 0.3s ease-in;
}

.page.active {
  display: block;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

/* Bottom Navigation - Updated to accent yellow */
.bottom-nav {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  display: flex;
  justify-content: space-around;
  background: var(--accent-yellow);
  border-top: 1px solid rgba(0, 0, 0, 0.1);
  padding: 0.5rem 0;
  z-index: 1000;
  backdrop-filter: blur(10px);
}

.nav-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.25rem;
  font-size: 0.75rem;
  color: var(--primary-blue);
  cursor: pointer;
  transition: all 0.2s;
  padding: 0.5rem;
  border-radius: 0.5rem;
  min-width: 60px;
}

.nav-item.active {
  color: var(--primary-blue);
  background: rgba(10, 42, 76, 0.15);
  font-weight: 600;
}

.nav-item i {
  font-size: 1.25rem;
}

.nav-item:hover {
  background: rgba(10, 42, 76, 0.1);
  transform: translateY(-1px);
}

/* Welcome Banner */
.welcome-banner {
  background: linear-gradient(135deg, var(--primary-blue) 0%, var(--dark-blue) 100%);
  color: var(--white);
  padding: 2rem;
  border-radius: 1rem;
  margin-bottom: 1.5rem;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.welcome-banner::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="grain" width="100" height="100" patternUnits="userSpaceOnUse"><circle cx="50" cy="50" r="1" fill="white" opacity="0.1"/></pattern></defs><rect width="100" height="100" fill="url(%23grain)"/></svg>');
  opacity: 0.3;
}

.welcome-banner h2 {
  margin-bottom: 0.5rem;
  font-size: 1.5rem;
  position: relative;
  z-index: 1;
}

.welcome-banner p {
  opacity: 0.9;
  position: relative;
  z-index: 1;
}

/* Search Box */
.search-container {
  margin: 1.5rem 0;
}

.search-box {
  display: flex;
  align-items: center;
  background: var(--background-color);
  border: 1px solid var(--border-color);
  border-radius: 0.75rem;
  padding: 0.75rem 1rem;
  gap: 0.75rem;
  box-shadow: var(--shadow);
  transition: all 0.2s;
}

.search-box:focus-within {
  border-color: var(--primary-blue);
  box-shadow: 0 0 0 3px rgba(10, 42, 76, 0.1);
}

.search-box i {
  color: var(--text-muted);
}

.search-box input {
  border: none;
  outline: none;
  flex: 1;
  font-size: 1rem;
  background: transparent;
  color: var(--text-primary);
}

.search-box input::placeholder {
  color: var(--text-muted);
}

/* Section Titles */
.section-title {
  font-size: 1.5rem;
  font-weight: 700;
  margin: 2rem 0 1rem 0;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

/* Deal Cards */
.deals-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1rem;
  margin-bottom: 2rem;
}

.deal-card {
  background: var(--surface-color);
  border-radius: 12px;
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: all 0.3s ease;
  border: 1px solid var(--border-color);
  position: relative;
}

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

.deal-image {
  width: 100%;
  height: 160px;
  background: var(--background-color);
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
}

.deal-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.3s ease;
}

.deal-card:hover .deal-image img {
  transform: scale(1.05);
}

.deal-badge {
  position: absolute;
  top: 0.5rem;
  right: 0.5rem;
  background: var(--accent-yellow);
  color: var(--primary-blue);
  padding: 0.25rem 0.5rem;
  border-radius: 0.25rem;
  font-size: 0.75rem;
  font-weight: 600;
  z-index: 2;
}

.deal-content {
  padding: 1rem;
}

.deal-title {
  font-weight: 600;
  margin-bottom: 0.5rem;
  line-height: 1.4;
  color: var(--text-primary);
  font-size: 1rem;
}

.deal-store {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 0.5rem;
  font-size: 0.875rem;
  color: var(--text-secondary);
}

.deal-price {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--success-color);
  margin-bottom: 1rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.deal-original-price {
  font-size: 0.875rem;
  color: var(--danger-color);
  text-decoration: line-through;
}

.deal-actions {
  display: flex;
  gap: 0.5rem;
}

.deal-btn {
  flex: 1;
  padding: 0.5rem 1rem;
  border: 1px solid var(--border-color);
  border-radius: 0.5rem;
  background: var(--background-color);
  color: var(--text-primary);
  cursor: pointer;
  font-size: 0.875rem;
  font-weight: 500;
  transition: all 0.2s;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.25rem;
}

.deal-btn:hover {
  background: var(--surface-color);
  transform: translateY(-1px);
}

.deal-btn.primary {
  background: var(--primary-blue);
  color: var(--white);
  border-color: var(--primary-blue);
}

.deal-btn.primary:hover {
  background: var(--dark-blue);
}

/* Categories */
.categories {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1rem;
  margin: 1.5rem 0;
}

.category {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.75rem;
  padding: 1.5rem 1rem;
  background: var(--surface-color);
  border-radius: 0.75rem;
  cursor: pointer;
  transition: all 0.3s ease;
  border: 1px solid var(--border-color);
  text-align: center;
  position: relative;
  overflow: hidden;
}

.category::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--primary-blue);
  transform: scaleX(0);
  transition: transform 0.3s ease;
}

.category:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
  border-color: var(--primary-blue);
}

.category:hover::before {
  transform: scaleX(1);
}

.category i {
  font-size: 1.5rem;
  color: var(--primary-blue);
}

.category span {
  font-weight: 500;
  font-size: 0.875rem;
  color: var(--text-primary);
}

/* Universe Page */
.universe-header {
  text-align: center;
  margin: 2rem 0;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  font-weight: 700;
  font-size: 1.5rem;
  color: var(--primary-blue);
  background: linear-gradient(135deg, var(--primary-blue), var(--dark-blue));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.globe-icon {
  color: var(--accent-yellow);
}

.post-creator {
  background: var(--surface-color);
  border-radius: 0.75rem;
  padding: 1rem;
  margin-bottom: 1.5rem;
  box-shadow: var(--shadow);
  border: 1px solid var(--border-color);
}

.post-input-container {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.post-avatar {
  width: 2.5rem;
  height: 2.5rem;
  border-radius: 50%;
  background: var(--primary-blue);
  color: var(--white);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 600;
  font-size: 0.875rem;
  flex-shrink: 0;
}

.post-input {
  flex: 1;
  border: 1px solid var(--border-color);
  border-radius: 2rem;
  padding: 0.75rem 1rem;
  outline: none;
  font-size: 0.875rem;
  background: var(--background-color);
  color: var(--text-primary);
  transition: border-color 0.2s;
}

.post-input:focus {
  border-color: var(--primary-blue);
}

.attachment-btn, .post-submit-btn {
  background: none;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  padding: 0.5rem;
  border-radius: 0.5rem;
  transition: all 0.2s;
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.attachment-btn:hover, .post-submit-btn:hover {
  color: var(--primary-blue);
  background: var(--surface-color);
}

/* Post Cards */
.post-card {
  background: var(--surface-color);
  border-radius: 0.75rem;
  padding: 1.5rem;
  margin-bottom: 1rem;
  box-shadow: var(--shadow);
  border: 1px solid var(--border-color);
  transition: transform 0.2s ease;
}

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

.post-header {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 1rem;
}

.post-user {
  font-weight: 600;
  color: var(--text-primary);
}

.post-time {
  font-size: 0.75rem;
  color: var(--text-muted);
}

.post-content {
  margin-bottom: 1rem;
  line-height: 1.5;
  color: var(--text-primary);
  font-size: 0.95rem;
}

.post-image {
  width: 100%;
  height: 200px;
  background-size: cover;
  background-position: center;
  border-radius: 0.5rem;
  margin-bottom: 1rem;
  background-color: var(--background-color);
}

.post-actions {
  display: flex;
  gap: 1.5rem;
  padding-top: 0.5rem;
  border-top: 1px solid var(--border-color);
}

.post-action {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--text-muted);
  cursor: pointer;
  transition: all 0.2s;
  font-size: 0.875rem;
  padding: 0.25rem 0.5rem;
  border-radius: 0.25rem;
}

.post-action:hover {
  color: var(--primary-blue);
  background: var(--background-color);
}

.post-action.active {
  color: var(--danger-color);
}

.post-action.active i {
  color: var(--danger-color);
}

/* Shopping List */
.list-item {
  display: flex;
  align-items: center;
  padding: 1rem;
  background: var(--surface-color);
  border-radius: 0.75rem;
  margin-bottom: 0.5rem;
  box-shadow: var(--shadow);
  border: 1px solid var(--border-color);
  transition: all 0.2s ease;
}

.list-item:hover {
  transform: translateX(4px);
}

.list-category {
  margin-bottom: 2rem;
}

.list-category h3 {
  margin-bottom: 1rem;
  color: var(--text-primary);
  font-size: 1.25rem;
  display: flex;
  align-items: center;
  justify-content: between;
}

/* Store Chips */
.stores-scroll {
  display: flex;
  gap: 0.75rem;
  overflow-x: auto;
  padding: 0.5rem 0;
  margin-bottom: 2rem;
  scrollbar-width: none;
}

.stores-scroll::-webkit-scrollbar {
  display: none;
}

.store-chip {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1rem;
  border-radius: 2rem;
  cursor: pointer;
  transition: all 0.3s ease;
  white-space: nowrap;
  min-width: fit-content;
  background: var(--surface-color);
  border: 1px solid var(--border-color);
  position: relative;
  overflow: hidden;
}

.store-chip::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: currentColor;
  opacity: 0.1;
  border-radius: inherit;
}

.store-chip:hover {
  transform: translateY(-2px) scale(1.05);
  box-shadow: var(--shadow-lg);
}

.store-chip-logo {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  color: var(--white);
  flex-shrink: 0;
  position: relative;
  z-index: 1;
}

/* Scanner */
.scanner-container {
  text-align: center;
  padding: 3rem 1rem;
  background: var(--surface-color);
  border-radius: 1rem;
  box-shadow: var(--shadow);
  margin-bottom: 2rem;
  border: 1px solid var(--border-color);
}

.scanner-placeholder {
  background: var(--background-color);
  border: 2px dashed var(--border-color);
  border-radius: 1rem;
  padding: 3rem 2rem;
  margin-bottom: 1.5rem;
  color: var(--text-muted);
  transition: all 0.3s ease;
}

.scanner-placeholder:hover {
  border-color: var(--primary-blue);
  background: rgba(10, 42, 76, 0.08);
}

/* Profile */
.profile-container {
  background: var(--surface-color);
  border-radius: 1rem;
  overflow: hidden;
  box-shadow: var(--shadow);
  margin-bottom: 2rem;
  border: 1px solid var(--border-color);
}

.profile-header {
  position: relative;
}

.cover-photo {
  height: 120px;
  background: linear-gradient(135deg, var(--primary-blue) 0%, var(--dark-blue) 100%);
  position: relative;
}

.cover-photo::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 50%;
  background: linear-gradient(transparent, var(--surface-color));
}

.profile-avatar-container {
  position: absolute;
  bottom: -40px;
  left: 1.5rem;
  display: flex;
  align-items: flex-end;
  gap: 1rem;
  z-index: 2;
}

.profile-avatar {
  width: 80px;
  height: 80px;
  border-radius: 50%;
  background: var(--primary-blue);
  color: var(--white);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  font-weight: 700;
  border: 4px solid var(--surface-color);
  box-shadow: var(--shadow);
}

.avatar-upload-btn {
  background: var(--background-color);
  border: 1px solid var(--border-color);
  border-radius: 0.5rem;
  padding: 0.5rem 1rem;
  font-size: 0.875rem;
  cursor: pointer;
  transition: all 0.2s;
  color: var(--text-primary);
  margin-bottom: 1rem;
}

.avatar-upload-btn:hover {
  background: var(--surface-color);
  border-color: var(--primary-blue);
  transform: translateY(-1px);
}

.profile-info {
  padding: 3rem 1.5rem 1.5rem;
}

.profile-info h2 {
  margin-bottom: 0.5rem;
  font-size: 1.5rem;
  color: var(--text-primary);
}

.profile-info p {
  color: var(--text-secondary);
  margin-bottom: 1.5rem;
  line-height: 1.5;
}

.profile-stats {
  display: flex;
  gap: 2rem;
  margin-bottom: 1.5rem;
  padding-bottom: 1.5rem;
  border-bottom: 1px solid var(--border-color);
  justify-content: space-around;
}

.stat {
  text-align: center;
  flex: 1;
}

.stat-value {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--primary-blue);
  display: block;
}

.stat-label {
  font-size: 0.875rem;
  color: var(--text-secondary);
  display: block;
  margin-top: 0.25rem;
}

.follow-btn {
  width: 100%;
  padding: 0.75rem;
  background: var(--primary-blue);
  color: var(--white);
  border: none;
  border-radius: 0.5rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.3s ease;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
}

.follow-btn:hover {
  background: var(--dark-blue);
  transform: translateY(-2px);
  box-shadow: var(--shadow);
}

.profile-posts {
  padding: 0 1.5rem 1.5rem;
}

.profile-posts h3 {
  color: var(--text-primary);
  margin-bottom: 1rem;
  font-size: 1.25rem;
}

/* Settings Styles */
.settings-container {
  background: var(--surface-color);
  border-radius: 1rem;
  overflow: hidden;
  box-shadow: var(--shadow);
  margin-bottom: 2rem;
  border: 1px solid var(--border-color);
}

.settings-header {
  padding: 2rem 1.5rem 1rem;
  text-align: center;
  border-bottom: 1px solid var(--border-color);
}

.settings-header h2 {
  color: var(--primary-blue);
  margin-bottom: 0.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
}

.settings-header p {
  color: var(--text-secondary);
}

.settings-section {
  padding: 1.5rem;
  border-bottom: 1px solid var(--border-color);
  transition: background-color 0.2s;
}

.settings-section:last-child {
  border-bottom: none;
}

.settings-section:hover {
  background: var(--background-color);
}

.settings-section h3 {
  margin-bottom: 1rem;
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.settings-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 0;
  cursor: pointer;
  transition: all 0.2s ease;
  border-radius: 0.5rem;
  margin: 0 -0.5rem;
  padding-left: 0.5rem;
  padding-right: 0.5rem;
}

.settings-item:hover {
  background: var(--background-color);
  transform: translateX(4px);
}

.settings-info {
  flex: 1;
}

.settings-label {
  font-weight: 500;
  color: var(--text-primary);
  margin-bottom: 0.25rem;
  font-size: 1rem;
}

.settings-description {
  font-size: 0.875rem;
  color: var(--text-secondary);
  line-height: 1.4;
}

.settings-action {
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

/* Theme Switch */
.theme-switch {
  position: relative;
  display: inline-block;
  width: 50px;
  height: 24px;
}

.theme-switch input {
  opacity: 0;
  width: 0;
  height: 0;
}

.theme-slider {
  position: absolute;
  cursor: pointer;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: var(--text-muted);
  transition: .4s;
  border-radius: 24px;
}

.theme-slider:before {
  position: absolute;
  content: "";
  height: 16px;
  width: 16px;
  left: 4px;
  bottom: 4px;
  background-color: var(--white);
  transition: .4s;
  border-radius: 50%;
}

input:checked + .theme-slider {
  background-color: var(--primary-blue);
}

input:checked + .theme-slider:before {
  transform: translateX(26px);
}

/* Toggle Switch */
.toggle-switch {
  position: relative;
  display: inline-block;
  width: 44px;
  height: 24px;
}

.toggle-switch input {
  opacity: 0;
  width: 0;
  height: 0;
}

.toggle-slider {
  position: absolute;
  cursor: pointer;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: var(--text-muted);
  transition: .4s;
  border-radius: 24px;
}

.toggle-slider:before {
  position: absolute;
  content: "";
  height: 16px;
  width: 16px;
  left: 4px;
  bottom: 4px;
  background-color: var(--white);
  transition: .4s;
  border-radius: 50%;
}

input:checked + .toggle-slider {
  background-color: var(--success-color);
}

input:checked + .toggle-slider:before {
  transform: translateX(20px);
}

/* App Info */
.app-info {
  text-align: center;
  padding: 1rem 0;
}

.app-version {
  font-weight: 500;
  color: var(--text-primary);
  margin-bottom: 0.5rem;
  font-size: 1rem;
}

.app-copyright {
  font-size: 0.875rem;
  color: var(--text-muted);
  line-height: 1.4;
}

.settings-actions {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  margin-top: 1rem;
}

/* Toast */
.toast {
  position: fixed;
  bottom: 100px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--primary-blue);
  color: var(--white);
  padding: 0.75rem 1.5rem;
  border-radius: 0.5rem;
  box-shadow: var(--shadow-lg);
  z-index: 10000;
  animation: slideUp 0.3s ease-out;
  max-width: 90%;
  text-align: center;
  font-weight: 500;
}

@keyframes slideUp {
  from {
    opacity: 0;
    transform: translateX(-50%) translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
  }
}

/* Empty States */
.empty-state {
  text-align: center;
  padding: 3rem 1rem;
  color: var(--text-muted);
  background: var(--surface-color);
  border-radius: 1rem;
  border: 2px dashed var(--border-color);
  margin: 2rem 0;
}

.empty-state i {
  font-size: 3rem;
  margin-bottom: 1rem;
  opacity: 0.5;
  display: block;
}

.empty-state p {
  margin-bottom: 1.5rem;
  font-size: 1.1rem;
}

/* Responsive Design */
@media (max-width: 768px) {
  .deals-grid {
    grid-template-columns: 1fr;
  }
  
  .categories {
    grid-template-columns: 1fr;
  }
  
  .page {
    padding: 1rem;
  }
  
  .app-header {
    padding: 1rem;
  }
  
  .profile-avatar-container {
    flex-direction: column;
    align-items: flex-start;
  }
  
  .header-actions {
    gap: 0.25rem;
  }
  
  .header-btn {
    width: 40px;
    height: 40px;
    font-size: 1rem;
  }
  
  .section-title {
    font-size: 1.25rem;
  }
  
  .auth-card {
    padding: 1.5rem;
    margin: 1rem;
  }
  
  .profile-stats {
    gap: 1rem;
  }
}

@media (max-width: 480px) {
  .nav-item {
    min-width: 50px;
    padding: 0.25rem;
  }
  
  .nav-item span {
    font-size: 0.7rem;
  }
  
  .nav-item i {
    font-size: 1.1rem;
  }
  
  .deal-actions {
    flex-direction: column;
  }
  
  .settings-item {
    padding: 0.75rem 0;
  }
  
  .profile-info {
    padding: 3rem 1rem 1rem;
  }
  
  .profile-posts {
    padding: 0 1rem 1rem;
  }
}

/* Dark theme adjustments */
[data-theme="dark"] .deal-card,
[data-theme="dark"] .post-card,
[data-theme="dark"] .conversation,
[data-theme="dark"] .settings-item,
[data-theme="dark"] .notification-item,
[data-theme="dark"] .listing-card,
[data-theme="dark"] .category,
[data-theme="dark"] .search-box,
[data-theme="dark"] .list-item {
  background: var(--surface-color);
}

[data-theme="dark"] .search-box input,
[data-theme="dark"] .post-input,
[data-theme="dark"] .form-control {
  background: var(--surface-color);
}

/* Focus styles for accessibility */
button:focus-visible,
input:focus-visible,
.nav-item:focus-visible {
  outline: 2px solid var(--primary-blue);
  outline-offset: 2px;
}

/* Ensure everything works */
.page.active {
  display: block !important;
}

#app {
  opacity: 1 !important;
}