/* ExpenseLess PWA - Enhanced Styles with Glassmorphism */

/* CSS Variables */
:root {
  --primary-color: #6366f1;
  --primary-dark: #4f46e5;
  --primary-light: #818cf8;
  --secondary-color: #8b5cf6;
  --success-color: #10b981;
  --warning-color: #f59e0b;
  --error-color: #ef4444;
  
  --bg-primary: #0f172a;
  --bg-secondary: #1e293b;
  --bg-tertiary: #334155;
  --bg-quaternary: #475569;
  --text-primary: #f8fafc;
  --text-secondary: #cbd5e1;
  --text-muted: #64748b;
  
  --border-color: rgba(255, 255, 255, 0.1);
  --border-hover: rgba(255, 255, 255, 0.2);
  --glass-bg: rgba(255, 255, 255, 0.05);
  --glass-bg-hover: rgba(255, 255, 255, 0.08);
  --glass-border: rgba(255, 255, 255, 0.1);
  --glass-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
  
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
  --shadow-glow: 0 0 20px rgba(99, 102, 241, 0.3);
  
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  --radius-2xl: 1.5rem;
  
  --transition-fast: 0.15s ease;
  --transition-normal: 0.3s ease;
  --transition-slow: 0.5s ease;
  --transition-bounce: 0.3s cubic-bezier(0.68, -0.55, 0.265, 1.55);
}

/* Reset & Base */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background: linear-gradient(135deg, var(--bg-primary) 0%, var(--bg-secondary) 100%);
  color: var(--text-primary);
  line-height: 1.6;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden; /* Prevent horizontal overflow */
}

/* Enhanced Glass Card Effect */
.glass-card {
  background: var(--glass-bg);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-xl);
  box-shadow: var(--glass-shadow);
  position: relative;
  overflow: hidden;
  transition: all var(--transition-normal);
}

.glass-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.4), transparent);
  opacity: 0.6;
}

.glass-card:hover {
  background: var(--glass-bg-hover);
  border-color: var(--border-hover);
  transform: translateY(-2px);
  box-shadow: var(--glass-shadow), var(--shadow-glow);
}

/* Enhanced Buttons with Animations */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.75rem 1.5rem;
  border: none;
  border-radius: var(--radius-lg);
  font-weight: 500;
  text-decoration: none;
  cursor: pointer;
  transition: all var(--transition-normal);
  position: relative;
  overflow: hidden;
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}

.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 var(--transition-slow);
}

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

.btn-primary {
  background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
  color: white;
  box-shadow: var(--shadow-md);
}

.btn-primary:hover {
  background: linear-gradient(135deg, var(--primary-dark), var(--primary-color));
  transform: translateY(-2px) scale(1.02);
  box-shadow: var(--shadow-xl), var(--shadow-glow);
}

.btn-primary:active {
  transform: translateY(0) scale(0.98);
  transition: all var(--transition-fast);
}

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

.btn-secondary:hover {
  background: var(--glass-bg-hover);
  border-color: var(--border-hover);
  transform: translateY(-1px);
}

.btn-full {
  width: 100%;
}

.btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
  transform: none !important;
}

.btn:disabled:hover {
  transform: none !important;
}

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

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

input, textarea, select {
  width: 100%;
  padding: 0.75rem;
  background: var(--glass-bg);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  font-size: 1rem;
}

input:focus, textarea:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

/* Auth Page */
.auth-page {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  padding: 1rem;
}

.auth-container {
  width: 100%;
  max-width: 400px;
}

.auth-card {
  padding: 2rem;
}

.auth-header {
  text-align: center;
  margin-bottom: 2rem;
}

.logo {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  font-size: 1.5rem;
  font-weight: bold;
  margin-bottom: 0.5rem;
}

.auth-tabs {
  display: flex;
  margin-bottom: 2rem;
  background: var(--bg-tertiary);
  border-radius: var(--radius-md);
  padding: 0.25rem;
}

.auth-tab {
  flex: 1;
  padding: 0.75rem;
  background: none;
  border: none;
  color: var(--text-secondary);
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all 0.2s ease;
}

.auth-tab.active {
  background: var(--primary-color);
  color: white;
}

.auth-form {
  display: none;
}

.auth-form.active {
  display: block;
}

/* Dashboard */
.dashboard-page {
  padding-bottom: 5rem;
}

.header {
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(10px);
  padding: 1rem;
}

.header-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: 1200px;
  margin: 0 auto;
}

.menu-btn {
  display: flex;
  flex-direction: column;
  gap: 3px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.5rem;
}

.menu-btn span {
  width: 20px;
  height: 2px;
  background: var(--text-primary);
  transition: all 0.3s ease;
}

/* Side Menu */
.side-menu {
  position: fixed;
  top: 0;
  right: -300px;
  width: 300px;
  height: 100vh;
  background: var(--glass-bg);
  backdrop-filter: blur(10px);
  border-left: 1px solid var(--border-color);
  z-index: 200;
  transition: right 0.3s ease;
}

.side-menu.active {
  right: 0;
}

.side-menu-content {
  padding: 2rem 1rem;
}

.menu-item {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.75rem;
  color: var(--text-secondary);
  text-decoration: none;
  border-radius: var(--radius-md);
  margin-bottom: 0.5rem;
  transition: all 0.2s ease;
}

.menu-item:hover, .menu-item.active {
  background: var(--glass-bg);
  color: var(--text-primary);
}

/* Main Content */
.main-content {
  max-width: 1200px;
  margin: 0 auto;
  padding: 1rem;
}

.page {
  display: none;
}

.page.active {
  display: block;
}

/* Period Navigation */
.period-nav {
  display: flex;
  gap: 0.5rem;
  margin-bottom: 2rem;
  overflow-x: auto;
  padding-bottom: 0.5rem;
}

.period-btn {
  padding: 0.5rem 1rem;
  background: var(--bg-tertiary);
  border: none;
  border-radius: var(--radius-md);
  color: var(--text-secondary);
  cursor: pointer;
  white-space: nowrap;
  transition: all 0.2s ease;
}

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

/* Total Card */
.total-card {
  text-align: center;
  padding: 2rem;
  margin-bottom: 2rem;
}

.total-amount {
  font-size: 2.5rem;
  font-weight: bold;
  color: var(--primary-color);
  margin: 0.5rem 0;
}

.total-period {
  font-size: 1rem;
  color: var(--text-secondary);
  margin-bottom: 1rem;
}

/* Lists */
.section-title, .page-header{
  font-size: 16px;
  margin: 0 0 20px 8px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.page-header h1{
  font-size: 16px;
}

.category-list, .expense-list, .categories-grid {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.category-item, .expense-item {
  background: var(--glass-bg);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 1rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

/* Enhanced FAB with Glow Effect */
.fab {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  width: 64px;
  height: 64px;
  background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
  border: none;
  border-radius: 50%;
  color: white;
  font-size: 1.5rem;
  cursor: pointer;
  box-shadow: var(--shadow-xl), var(--shadow-glow);
  transition: all var(--transition-bounce);
  z-index: 50;
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}

.fab::before {
  content: '';
  position: absolute;
  top: -2px;
  left: -2px;
  right: -2px;
  bottom: -2px;
  background: linear-gradient(45deg, var(--primary-color), var(--secondary-color), var(--primary-color));
  border-radius: 50%;
  z-index: -1;
  opacity: 0;
  transition: opacity var(--transition-normal);
}

.fab:hover {
  transform: scale(1.15) rotate(90deg);
  box-shadow: var(--shadow-xl), 0 0 30px rgba(99, 102, 241, 0.5);
}

.fab:hover::before {
  opacity: 1;
  animation: rotate 2s linear infinite;
}

.fab:active {
  transform: scale(1.05) rotate(90deg);
  transition: all var(--transition-fast);
}

@keyframes rotate {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

.settings-container{
  padding: 20px;
}

/* Enhanced Modal with Smooth Animations */
.modal {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.6);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-normal);
  padding: 1rem;
}

.modal.active {
  opacity: 1;
  visibility: visible;
}

.modal-content {
  width: 100%;
  max-width: 500px;
  max-height: 90vh;
  overflow-y: auto;
  padding: 2rem;
  transform: scale(0.9) translateY(20px);
  transition: all var(--transition-bounce);
}

.modal.active .modal-content {
  transform: scale(1) translateY(0);
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 2rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--border-color);
}

.modal-close {
  background: none;
  border: none;
  color: var(--text-secondary);
  cursor: pointer;
  padding: 0.5rem;
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.modal-close:hover {
  background: var(--glass-bg);
  color: var(--text-primary);
  transform: rotate(90deg);
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 2rem;
}

.modal-close {
  background: none;
  border: none;
  color: var(--text-secondary);
  cursor: pointer;
  padding: 0.5rem;
}

.modal-actions {
  display: flex;
  gap: 1rem;
  margin-top: 2rem;
}

/* Grids */
.category-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(80px, 1fr));
  gap: 12px;
  margin-top: 16px;
}

.category-option {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 12px 8px;
  background: rgba(255, 255, 255, 0.05);
  border: none;
  border-radius: 12px;
  cursor: pointer;
  transition: all 0.3s ease;
  text-align: center;
}

.category-option:hover {
  background: rgba(255, 255, 255, 0.1);
  transform: translateY(-2px);
}

.category-option.selected {
  background: rgba(99, 102, 241, 0.2);
  box-shadow: 0 0 20px rgba(99, 102, 241, 0.3);
}

.category-option .category-icon {
  font-size: 24px;
  margin-bottom: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: transparent;
}

.category-option .category-name {
  font-size: 11px;
  font-weight: 400;
  color: #94a3b8;
  line-height: 1.2;
}

.color-grid, .icon-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(60px, 1fr));
  gap: 0.5rem;
}

.color-option, .icon-option {
  aspect-ratio: 1;
  border: 2px solid transparent;
  border-radius: var(--radius-md);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.2s ease;
}

.category-option.selected {
  background: rgba(99, 102, 241, 0.2);
  box-shadow: 0 0 20px rgba(99, 102, 241, 0.3);
  border-color: var(--primary-color);
}

.color-option.selected, .icon-option.selected {
  border-color: var(--primary-color);
}

/* Loading & Spinner */
.loading-state {
  text-align: center;
  padding: 2rem;
  color: var(--text-secondary);
}

.spinner {
  width: 20px;
  height: 20px;
  border: 2px solid var(--border-color);
  border-top: 2px solid var(--primary-color);
  border-radius: 50%;
  animation: spin 1s linear infinite;
  margin: 0 auto 1rem;
}

@keyframes spin {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

/* Charts Section */
.charts-section {
  margin-top: 2rem;
}

.charts-toggle {
  width: 100%;
  padding: 1rem;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 12px;
  color: #f8fafc;
  font-size: 1rem;
  cursor: pointer;
  transition: all 0.3s ease;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  position: relative;
  overflow: hidden;
}

.charts-toggle:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: rgba(255, 255, 255, 0.2);
  transform: translateY(-1px);
}

.charts-toggle.active {
  background: rgba(99, 102, 241, 0.2);
  border-color: #6366f1;
  box-shadow: 0 0 20px rgba(99, 102, 241, 0.3);
}

.charts-toggle.active:hover {
  background: rgba(99, 102, 241, 0.3);
}

.charts-toggle::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.1), transparent);
  transition: left 0.5s ease;
}

.charts-toggle:hover::before {
  left: 100%;
}



/* Toast */
.toast {
  position: fixed;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%);
  background: var(--glass-bg);
  backdrop-filter: blur(10px);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 1rem 1.5rem;
  color: var(--text-primary);
  z-index: 2000;
  opacity: 0;
  visibility: hidden;
  transition: all 0.3s ease;
}

.toast.show {
  opacity: 1;
  visibility: visible;
}

/* Responsive */
@media (max-width: 768px) {
  .modal-actions {
    flex-direction: column;
  }
  
  .period-nav {
    justify-content: center;
  }
  
  .total-amount {
    font-size: 2rem;
  }
}

/* Icons (basic) */
.icon-wallet:before { content: "💰"; }
.icon-plus:before { content: "+"; }
.icon-x:before { content: "×"; }
.icon-user:before { content: "👤"; }
.icon-home:before { content: "🏠"; }
.icon-grid:before { content: "⊞"; }
.icon-download:before { content: "⬇"; }
.icon-logout:before { content: "⏻"; }

/* Charts Section Removed */



.no-data-message {
  text-align: center;
  padding: 3rem 1rem;
  color: var(--text-secondary);
}

.no-data-message i {
  font-size: 3rem;
  margin-bottom: 1rem;
  display: block;
}

/* Category Expenses Page */
#categoryExpensesPage {
  display: none;
}

#categoryExpensesPage.active {
  display: block;
}

.back-btn {
  margin-right: 0.75rem;
  background: transparent;
  color: var(--text-primary);
  padding: 0.25rem;
  border-radius: 50%;
  transition: background-color var(--transition-fast);
}

.back-btn:hover {
  background-color: var(--glass-bg-hover);
}

.section-title {
  display: flex;
  align-items: center;
}

.expense-list {
  margin-top: 1rem;
}

/* Swipe Gestures */
.expense-item, .category-item {
  position: relative;
  transition: transform var(--transition-fast);
  user-select: none;
  -webkit-user-select: none;
}

.expense-item.swipe-active, .category-item.swipe-active {
  z-index: 10;
}

.swipe-hint {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  padding: 0.5rem 1rem;
  border-radius: var(--radius-md);
  color: white;
  font-weight: 500;
  font-size: 0.875rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  pointer-events: none;
  z-index: 5;
}

.swipe-hint-right {
  left: 1rem;
  background: var(--success-color);
}

.swipe-hint-left {
  right: 1rem;
  background: var(--error-color);
}



/* Enhanced Category and Expense Items */
.category-item, .expense-item {
  background: var(--glass-bg);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 1rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  transition: all var(--transition-normal);
  cursor: pointer;
}

.category-item:hover, .expense-item:hover {
  background: var(--glass-bg-hover);
  border-color: var(--border-hover);
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

.category-info, .expense-info {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.category-icon, .expense-icon {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
}

.category-details, .expense-details {
  flex: 1;
}

.category-name, .expense-category {
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 0.25rem;
}

.category-count, .expense-date {
  font-size: 0.875rem;
  color: var(--text-secondary);
}

.expense-note {
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-top: 0.25rem;
}

.category-amount, .expense-amount {
  text-align: right;
  font-weight: 600;
  color: var(--text-primary);
}

.percentage {
  font-size: 0.875rem;
  color: var(--text-secondary);
  margin-top: 0.25rem;
}

/* Category Card for Management Page */
.category-card {
  padding: 1.5rem;
  margin-bottom: 1rem;
  transition: all var(--transition-normal);
}

.category-card:hover {
  transform: translateY(-2px);
}

.category-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1rem;
}

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

.btn-icon {
  width: 36px;
  height: 36px;
  border: none;
  border-radius: var(--radius-md);
  background: var(--glass-bg);
  color: var(--text-secondary);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-fast);
}

.btn-icon:hover {
  background: var(--glass-bg-hover);
  color: var(--text-primary);
  transform: scale(1.1);
}

.category-color {
  width: 20px;
  height: 20px;
  border-radius: 50%;
  margin-top: 0.5rem;
}

.category-stats {
  display: flex;
  gap: 1rem;
  margin-top: 1rem;
}

.stat {
  text-align: center;
}

.stat-label {
  display: block;
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-bottom: 0.25rem;
}

.stat-value {
  font-weight: 600;
  color: var(--text-primary);
}

/* Animations */
@keyframes slideDown {
  from {
    opacity: 0;
    transform: translateY(-20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes pulse {
  0%, 100% {
    transform: scale(1);
  }
  50% {
    transform: scale(1.05);
  }
}

.animate-fade-in-up {
  animation: fadeInUp 0.5s ease forwards;
}

.animate-pulse {
  animation: pulse 2s infinite;
}

/* Toast Notifications */
#toastContainer {
  position: fixed;
  top: 20px;
  right: 20px;
  z-index: 9999;
  display: flex;
  flex-direction: column;
  gap: 10px;
  max-width: 300px;
}

.toast {
  padding: 12px 16px;
  border-radius: var(--radius-md);
  color: var(--text-primary);
  background: var(--glass-bg);
  backdrop-filter: blur(10px);
  box-shadow: var(--glass-shadow);
  border: 1px solid var(--glass-border);
  transform: translateX(100%);
  opacity: 0;
  transition: transform 0.3s ease, opacity 0.3s ease;
}

.toast.show {
  transform: translateX(0);
  opacity: 1;
}

.toast.success {
  border-left: 4px solid var(--success-color);
}

.toast.error {
  border-left: 4px solid var(--error-color);
}

.toast.warning {
  border-left: 4px solid var(--warning-color);
}

/* Utility Classes */
.hidden { display: none !important; }
.text-center { text-align: center; }
.mb-1 { margin-bottom: 0.5rem; }
.mb-2 { margin-bottom: 1rem; }
.mt-2 { margin-top: 1rem; }
.relative { position: relative; }
.absolute { position: absolute; }
.flex { display: flex; }
.items-center { align-items: center; }
.justify-between { justify-content: space-between; }
.gap-2 { gap: 0.5rem; }
.gap-4 { gap: 1rem; }

/* Expense Progress Bar */
.expense-progress-container {
  margin-top: 1.5rem;
}

.expense-progress-label {
  font-size: 0.875rem;
  color: var(--text-secondary);
  margin-bottom: 0.5rem;
  text-align: left;
}

.expense-progress-bar {
  height: 10px;
  background-color: var(--bg-tertiary);
  border-radius: 5px;
  overflow: hidden;
  margin-bottom: 0.5rem;
}

.expense-progress-fill {
  height: 100%;
  border-radius: 5px;
  transition: width 0.3s ease, background-color 0.3s ease;
}

.expense-progress-text {
  font-size: 0.875rem;
  color: var(--text-secondary);
  text-align: right;
}