:root {
  /* Dark Mode Default Variables */
  --bg-primary: #0a0b10;
  --bg-secondary: #12131a;
  --panel-bg: rgba(26, 27, 38, 0.7);
  --panel-border: rgba(255, 255, 255, 0.08);
  --text-primary: #f8f9fa;
  --text-secondary: #9ea2b0;
  
  --primary: #6366f1;
  --primary-glow: rgba(99, 102, 241, 0.4);
  --success: #10b981;
  --success-glow: rgba(16, 185, 129, 0.25);
  --danger: #ef4444;
  --danger-glow: rgba(239, 68, 68, 0.25);
  --warning: #f59e0b;
  
  --font-family: 'Outfit', 'Noto Sans SC', system-ui, -apple-system, sans-serif;
  --card-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.3);
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --glow-opacity: 0.15;
}

[data-theme="light"] {
  --bg-primary: #f0f2f5;
  --bg-secondary: #ffffff;
  --panel-bg: rgba(255, 255, 255, 0.85);
  --panel-border: rgba(0, 0, 0, 0.06);
  --text-primary: #1f2937;
  --text-secondary: #6b7280;
  
  --primary: #4f46e5;
  --primary-glow: rgba(79, 70, 229, 0.25);
  --success: #059669;
  --success-glow: rgba(5, 150, 105, 0.25);
  --danger: #dc2626;
  --danger-glow: rgba(220, 38, 38, 0.25);
  
  --card-shadow: 0 8px 30px 0 rgba(0, 0, 0, 0.05);
  --glow-opacity: 0.05;
}

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

body {
  background-color: var(--bg-primary);
  color: var(--text-primary);
  font-family: var(--font-family);
  min-height: 100vh;
  transition: background-color 0.5s ease, color 0.3s ease;
  overflow-x: hidden;
  position: relative;
}

/* Decorative background glowing shapes */
body::before, body::after {
  content: '';
  position: absolute;
  width: 300px;
  height: 300px;
  border-radius: 50%;
  filter: blur(120px);
  z-index: -1;
  opacity: var(--glow-opacity);
  pointer-events: none;
  transition: opacity 0.5s ease;
}

body::before {
  top: 10%;
  left: 10%;
  background: var(--primary);
}

body::after {
  bottom: 10%;
  right: 10%;
  background: var(--success);
}

.app-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 24px 16px 60px;
}

/* Header */
.app-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 32px;
  padding: 16px 20px;
  background: var(--panel-bg);
  border: 1px solid var(--panel-border);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-radius: 20px;
  box-shadow: var(--card-shadow);
}

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

.logo-icon {
  font-size: 28px;
  color: var(--primary);
  animation: logoSpin 12s infinite linear;
}

@keyframes logoSpin {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

.logo h1 {
  font-size: 20px;
  font-weight: 700;
  letter-spacing: 0.5px;
}

.logo h1 span {
  font-size: 12px;
  color: var(--text-secondary);
  font-weight: 400;
  display: block;
  text-transform: uppercase;
  letter-spacing: 2px;
  margin-top: 2px;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 16px;
}

.month-picker-container {
  display: flex;
  align-items: center;
  gap: 8px;
  background: rgba(0, 0, 0, 0.2);
  border: 1px solid var(--panel-border);
  border-radius: 12px;
  padding: 8px 16px;
  color: var(--text-secondary);
  transition: var(--transition);
}

[data-theme="light"] .month-picker-container {
  background: rgba(0, 0, 0, 0.04);
}

.month-picker-container:focus-within {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px var(--primary-glow);
}

.month-picker-container input[type="month"] {
  background: transparent;
  border: none;
  color: var(--text-primary);
  font-family: var(--font-family);
  font-size: 14px;
  font-weight: 600;
  outline: none;
  cursor: pointer;
}

.icon-btn {
  background: var(--panel-bg);
  border: 1px solid var(--panel-border);
  color: var(--text-primary);
  width: 42px;
  height: 42px;
  border-radius: 12px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition);
}

.icon-btn:hover {
  background: var(--primary);
  color: white;
  transform: translateY(-2px);
  box-shadow: 0 4px 12px var(--primary-glow);
}

/* Dashboard Layout Grid */
.dashboard-grid {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 24px;
}

/* Cards & Glassmorphism Panels */
.glass-panel {
  background: var(--panel-bg);
  border: 1px solid var(--panel-border);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-radius: 24px;
  box-shadow: var(--card-shadow);
  padding: 24px;
  transition: var(--transition);
}

.panel-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 20px;
}

.panel-header h3 {
  font-size: 16px;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 8px;
}

/* Stats Cards */
.stats-container {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
  margin-bottom: 24px;
}

.stat-card {
  position: relative;
  background: var(--panel-bg);
  border: 1px solid var(--panel-border);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-radius: 20px;
  padding: 20px;
  overflow: hidden;
  box-shadow: var(--card-shadow);
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.card-bg-glow {
  position: absolute;
  top: -50px;
  right: -50px;
  width: 150px;
  height: 150px;
  background: radial-gradient(circle, var(--primary-glow) 0%, transparent 70%);
  border-radius: 50%;
  pointer-events: none;
}

.stat-card .card-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  color: var(--text-secondary);
  font-size: 13px;
  font-weight: 500;
}

.stat-card .card-icon {
  width: 32px;
  height: 32px;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
}

.balance-card .card-icon {
  background: var(--primary-glow);
  color: var(--primary);
}

.income-card .card-icon {
  background: rgba(16, 185, 129, 0.15);
  color: var(--success);
}

.expense-card .card-icon {
  background: rgba(239, 68, 68, 0.15);
  color: var(--danger);
}

.stat-card .card-value {
  font-size: 28px;
  font-weight: 700;
  letter-spacing: -0.5px;
}

.stat-card .card-footer {
  font-size: 11px;
  color: var(--text-secondary);
  border-top: 1px solid var(--panel-border);
  padding-top: 8px;
  margin-top: 4px;
}

/* Specific Style on stats value */
#stat-income { color: var(--success); }
#stat-expense { color: var(--danger); }

/* Chart Styling */
.chart-card {
  height: 340px;
  display: flex;
  flex-direction: column;
}

.chart-wrapper {
  position: relative;
  flex-grow: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 200px;
}

/* Quick Add Form */
.quick-add-card {
  margin-bottom: 24px;
}

.type-selector {
  display: flex;
  gap: 12px;
  margin-bottom: 20px;
  position: relative;
}

.type-selector input[type="radio"] {
  display: none;
}

.type-label {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px;
  border-radius: 12px;
  border: 1px solid var(--panel-border);
  cursor: pointer;
  font-weight: 600;
  font-size: 14px;
  transition: var(--transition);
}

.expense-label {
  color: var(--text-secondary);
}
.income-label {
  color: var(--text-secondary);
}

#type-expense:checked ~ .expense-label {
  background: var(--danger-glow);
  border-color: var(--danger);
  color: var(--danger);
  box-shadow: 0 4px 12px var(--danger-glow);
}

#type-income:checked ~ .income-label {
  background: var(--success-glow);
  border-color: var(--success);
  color: var(--success);
  box-shadow: 0 4px 12px var(--success-glow);
}

.form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-bottom: 20px;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.form-group label {
  font-size: 12px;
  font-weight: 600;
  color: var(--text-secondary);
}

.form-group input, .form-group select {
  background: rgba(0, 0, 0, 0.2);
  border: 1px solid var(--panel-border);
  border-radius: 12px;
  padding: 10px 14px;
  color: var(--text-primary);
  font-family: var(--font-family);
  font-size: 14px;
  outline: none;
  transition: var(--transition);
}

[data-theme="light"] .form-group input, 
[data-theme="light"] .form-group select {
  background: rgba(0, 0, 0, 0.03);
}

.form-group input:focus, .form-group select:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px var(--primary-glow);
}

.input-prefix-wrapper {
  position: relative;
  display: flex;
  align-items: center;
}

.input-prefix-wrapper .prefix {
  position: absolute;
  left: 14px;
  font-size: 14px;
  font-weight: 600;
  color: var(--text-secondary);
}

.input-prefix-wrapper input {
  padding-left: 28px;
  width: 100%;
}

.submit-btn {
  width: 100%;
  background: var(--primary);
  color: white;
  border: none;
  border-radius: 12px;
  padding: 12px;
  font-weight: 600;
  font-size: 15px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  transition: var(--transition);
  box-shadow: 0 4px 12px var(--primary-glow);
}

.submit-btn:hover {
  transform: translateY(-1px);
  filter: brightness(1.1);
}

/* Ledger List Container */
.ledger-card {
  min-height: 400px;
}

.badge {
  font-size: 11px;
  font-weight: 600;
  background: var(--primary-glow);
  color: var(--primary);
  padding: 4px 8px;
  border-radius: 20px;
}

.ledger-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
  max-height: 450px;
  overflow-y: auto;
  padding-right: 4px;
}

.ledger-list::-webkit-scrollbar {
  width: 6px;
}

.ledger-list::-webkit-scrollbar-thumb {
  background: var(--panel-border);
  border-radius: 4px;
}

/* Individual Ledger Item */
.ledger-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--panel-border);
  border-radius: 16px;
  padding: 14px 16px;
  transition: var(--transition);
}

[data-theme="light"] .ledger-item {
  background: rgba(0, 0, 0, 0.02);
}

.ledger-item:hover {
  background: rgba(255, 255, 255, 0.06);
  transform: translateX(4px);
}

[data-theme="light"] .ledger-item:hover {
  background: rgba(0, 0, 0, 0.04);
}

.item-left {
  display: flex;
  align-items: center;
  gap: 14px;
}

.category-icon {
  width: 40px;
  height: 40px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
}

/* Dynamic category colors */
.category-icon.catering { background: rgba(245, 158, 11, 0.15); color: #f59e0b; } /* Orange */
.category-icon.transport { background: rgba(59, 130, 246, 0.15); color: #3b82f6; } /* Blue */
.category-icon.shopping { background: rgba(236, 72, 153, 0.15); color: #ec4899; } /* Pink */
.category-icon.entertainment { background: rgba(139, 92, 246, 0.15); color: #8b5cf6; } /* Purple */
.category-icon.salary { background: rgba(16, 185, 129, 0.15); color: #10b981; } /* Green */
.category-icon.investment { background: rgba(6, 182, 212, 0.15); color: #06b6d4; } /* Cyan */
.category-icon.other { background: rgba(107, 114, 128, 0.15); color: #6b7280; } /* Gray */

.item-info {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.item-info .title {
  font-size: 14px;
  font-weight: 600;
}

.item-info .meta-desc {
  font-size: 11px;
  color: var(--text-secondary);
  display: flex;
  gap: 8px;
  align-items: center;
}

.item-info .meta-desc span {
  display: flex;
  align-items: center;
  gap: 4px;
}

.item-right {
  display: flex;
  align-items: center;
  gap: 16px;
}

.item-right .amount {
  font-size: 16px;
  font-weight: 700;
}

.amount.income {
  color: var(--success);
}

.amount.expense {
  color: var(--text-primary);
}

.delete-btn {
  background: transparent;
  border: none;
  color: var(--text-secondary);
  cursor: pointer;
  padding: 4px;
  font-size: 14px;
  opacity: 0;
  transition: var(--transition);
}

.ledger-item:hover .delete-btn {
  opacity: 1;
}

.delete-btn:hover {
  color: var(--danger);
  transform: scale(1.1);
}

/* Empty states */
.empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 12px;
  padding: 40px 20px;
  color: var(--text-secondary);
  text-align: center;
  width: 100%;
}

.empty-state i {
  font-size: 40px;
  opacity: 0.5;
}

.empty-state p {
  font-size: 13px;
}

.hidden {
  display: none !important;
}

/* Toast Notifications */
.toast {
  position: fixed;
  bottom: 24px;
  right: 24px;
  background: var(--bg-secondary);
  border: 1px solid var(--panel-border);
  color: var(--text-primary);
  padding: 12px 20px;
  border-radius: 12px;
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.4);
  font-size: 13px;
  font-weight: 600;
  z-index: 1000;
  display: flex;
  align-items: center;
  gap: 8px;
  animation: slideIn 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

@keyframes slideIn {
  from { transform: translateY(100px); opacity: 0; }
  to { transform: translateY(0); opacity: 1; }
}

/* Mobile Responsiveness */
@media (max-width: 900px) {
  .dashboard-grid {
    grid-template-columns: 1fr;
  }
  
  .app-header {
    flex-direction: column;
    gap: 16px;
    align-items: stretch;
    text-align: center;
  }

  .logo {
    justify-content: center;
  }

  .header-actions {
    justify-content: space-between;
  }

  .stats-container {
    grid-template-columns: 1fr 1fr;
  }

  .stat-card.balance-card {
    grid-column: span 2;
  }
}