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

:root {
  --bg-dark: #0f172a;
  --bg-darker: #0a0f1f;
  --bg-card: #1e293b;
  --text-primary: #f1f5f9;
  --text-secondary: #cbd5e1;
  --border: #334155;
  --accent: #6366f1;
  --accent-hover: #4f46e5;
  --success: #10b981;
  --danger: #ef4444;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
  background-color: var(--bg-dark);
  color: var(--text-primary);
  line-height: 1.6;
}

/* Login Page */
.login-container {
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 100vh;
  background: linear-gradient(135deg, var(--bg-darker) 0%, var(--bg-dark) 100%);
}

.login-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 40px;
  width: 100%;
  max-width: 400px;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
}

.login-card h1 {
  text-align: center;
  margin-bottom: 30px;
  font-size: 28px;
  background: linear-gradient(135deg, var(--accent), #818cf8);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.login-tabs {
  display: flex;
  gap: 10px;
  margin-bottom: 30px;
  border-bottom: 1px solid var(--border);
}

.tab-btn {
  flex: 1;
  padding: 12px;
  background: none;
  border: none;
  color: var(--text-secondary);
  cursor: pointer;
  font-size: 14px;
  font-weight: 600;
  border-bottom: 2px solid transparent;
  transition: all 0.3s ease;
}

.tab-btn.active {
  color: var(--accent);
  border-bottom-color: var(--accent);
}

.auth-form {
  display: none;
}

.auth-form.active {
  display: flex;
  flex-direction: column;
  gap: 15px;
}

.auth-form input {
  padding: 12px 15px;
  background: var(--bg-dark);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text-primary);
  font-size: 14px;
  transition: all 0.3s ease;
}

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

.auth-form button {
  padding: 12px;
  background: var(--accent);
  border: none;
  border-radius: 8px;
  color: white;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.3s ease;
}

.auth-form button:hover {
  background: var(--accent-hover);
  transform: translateY(-2px);
  box-shadow: 0 10px 20px rgba(99, 102, 241, 0.2);
}

/* Dashboard */
.dashboard {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

.navbar {
  background: var(--bg-card);
  border-bottom: 1px solid var(--border);
  padding: 20px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.navbar h1 {
  font-size: 24px;
  background: linear-gradient(135deg, var(--accent), #818cf8);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin: 0;
}

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

.welcome-text {
  color: var(--text-secondary);
  font-size: 14px;
}

.nav-buttons {
  display: flex;
  gap: 10px;
}

.nav-buttons button {
  padding: 8px 16px;
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text-primary);
  border-radius: 6px;
  cursor: pointer;
  transition: all 0.3s ease;
}

.nav-buttons button:hover {
  background: var(--accent);
  border-color: var(--accent);
  color: white;
}

.content {
  flex: 1;
  padding: 30px;
  overflow-y: auto;
}

/* Dashboard Content */
.dashboard-content {
  max-width: 1400px;
  margin: 0 auto;
}

.dashboard-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 30px;
  flex-wrap: wrap;
  gap: 20px;
}

.dashboard-header h2 {
  font-size: 24px;
  margin: 0;
}

.month-selector {
  display: flex;
  gap: 10px;
  align-items: center;
}

.month-selector button {
  padding: 8px 12px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  color: var(--text-primary);
  border-radius: 6px;
  cursor: pointer;
  transition: all 0.3s ease;
  font-weight: 600;
}

.month-selector button:hover {
  background: var(--accent);
  border-color: var(--accent);
  color: white;
}

.month-selector input {
  padding: 8px 12px;
  background: var(--bg-dark);
  border: 1px solid var(--border);
  border-radius: 6px;
  color: var(--text-primary);
  cursor: pointer;
  transition: all 0.3s ease;
}

.month-selector input:hover,
.month-selector input:focus {
  border-color: var(--accent);
  outline: none;
}

/* Summary Cards */
.summary-card {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 15px;
  margin-bottom: 30px;
}

.summary-item {
  background: linear-gradient(135deg, rgba(99, 102, 241, 0.1), rgba(139, 92, 246, 0.1));
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.summary-item .label {
  font-size: 12px;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.summary-item .value {
  font-size: 24px;
  font-weight: 700;
  color: var(--accent);
}

/* Charts */
.charts-container {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: 20px;
}

.chart {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 20px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
  transition: all 0.3s ease;
}

.chart.chart-large {
  grid-column: span 1;
}

.chart.chart-full {
  grid-column: 1 / -1;
}

.chart:hover {
  border-color: var(--accent);
  box-shadow: 0 8px 24px rgba(99, 102, 241, 0.1);
}

.chart h3 {
  margin-bottom: 15px;
  font-size: 16px;
  color: var(--text-primary);
}

/* Expenses Search Bar */
.expenses-search-bar {
  display: flex;
  gap: 10px;
  margin-bottom: 12px;
  flex-wrap: wrap;
}

.expenses-search-bar input[type="text"] {
  flex: 1;
  min-width: 160px;
  padding: 8px 12px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--bg-secondary);
  color: var(--text-primary);
  font-size: 0.875rem;
  outline: none;
  transition: border-color 0.2s;
}

.expenses-search-bar input[type="text"]:focus {
  border-color: var(--accent);
}

.expenses-search-bar select {
  padding: 8px 12px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--bg-secondary);
  color: var(--text-primary);
  font-size: 0.875rem;
  outline: none;
  cursor: pointer;
  transition: border-color 0.2s;
}

.expenses-search-bar select:focus {
  border-color: var(--accent);
}

/* Expenses List */
.expenses-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
  max-height: 400px;
  overflow-y: auto;
}

.expense-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 12px;
  background: rgba(99, 102, 241, 0.05);
  border: 1px solid var(--border);
  border-radius: 8px;
  transition: all 0.3s ease;
  cursor: pointer;
  user-select: none;
}

.expense-item:hover {
  background: rgba(99, 102, 241, 0.1);
  border-color: var(--accent);
  transform: translateX(5px);
}

.expense-left {
  display: flex;
  align-items: center;
  gap: 12px;
  flex: 1;
}

.expense-category {
  width: 12px;
  height: 40px;
  border-radius: 6px;
}

.expense-info {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.expense-name {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-primary);
  margin: 0;
}

.expense-time {
  font-size: 12px;
  color: var(--text-secondary);
  margin: 0;
  display: flex;
  align-items: center;
  gap: 8px;
}

.recurring-badge {
  font-size: 11px;
  background: rgba(16, 185, 129, 0.2);
  color: var(--success);
  padding: 2px 6px;
  border-radius: 4px;
  white-space: nowrap;
}

.expense-amount {
  font-size: 14px;
  font-weight: 700;
  color: var(--danger);
}

.no-data {
  text-align: center;
  color: var(--text-secondary);
  padding: 30px;
  font-size: 14px;
}

/* Calendar Content */
.calendar-content {
  max-width: 1400px;
  margin: 0 auto;
}

.calendar-content h2 {
  margin-bottom: 20px;
}

.calendar-views {
  display: flex;
  gap: 10px;
  margin-bottom: 30px;
}

.view-btn {
  padding: 8px 16px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  color: var(--text-primary);
  border-radius: 6px;
  cursor: pointer;
  transition: all 0.3s ease;
}

.view-btn.active {
  background: var(--accent);
  border-color: var(--accent);
  color: white;
}

.view-btn:hover {
  border-color: var(--accent);
}

/* Day View */
.calendar-day-view,
.calendar-week-view,
.calendar-month-view {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 12px;
  overflow: hidden;
}

.day-header,
.week-header,
.month-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px;
  border-bottom: 1px solid var(--border);
  gap: 15px;
}

.day-header button,
.week-header button,
.month-header button {
  padding: 8px 16px;
  background: var(--accent);
  border: none;
  border-radius: 6px;
  color: white;
  cursor: pointer;
  font-weight: 600;
  transition: all 0.3s ease;
}

.day-header button:hover,
.week-header button:hover,
.month-header button:hover {
  background: var(--accent-hover);
}

.day-header input {
  padding: 8px 12px;
  background: var(--bg-dark);
  border: 1px solid var(--border);
  border-radius: 6px;
  color: var(--text-primary);
  cursor: pointer;
}

.day-timeline {
  max-height: 700px;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
}

.time-slot {
  display: flex;
  border-bottom: 1px solid var(--border);
  min-height: 50px;
  cursor: pointer;
  transition: all 0.2s ease;
}

.time-slot:hover {
  background: rgba(99, 102, 241, 0.05);
}

.time-label {
  width: 80px;
  padding: 12px;
  font-size: 12px;
  color: var(--text-secondary);
  font-weight: 600;
  border-right: 1px solid var(--border);
  flex-shrink: 0;
}

.slot-content {
  flex: 1;
  padding: 8px;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.expense-tile {
  padding: 6px 8px;
  border-radius: 4px;
  font-size: 11px;
  color: white;
  font-weight: 600;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  cursor: pointer;
  transition: all 0.2s ease;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 8px;
  height: 30px;
  line-height: 1;
}

.expense-tile:hover {
  transform: scale(1.05);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
}

.expense-tile span:first-child {
  flex: 1;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.expense-tile span:last-child {
  flex-shrink: 0;
  font-size: 10px;
}

/* Week View */
.week-scroll-wrapper {
  max-height: 700px;
  overflow-y: auto;
  overflow-x: hidden;
}

.week-grid {
  display: flex;
}

.time-column,
.day-column {
  display: flex;
  flex-direction: column;
  flex-shrink: 0;
  border-right: 1px solid var(--border);
}

.time-column {
  width: 80px;
  position: sticky;
  left: 0;
  background: var(--bg-dark);
  z-index: 10;
}

.day-column {
  flex: 1;
  min-width: 0;
  overflow-y: hidden;
}

.week-day-label {
  padding: 12px;
  font-size: 12px;
  font-weight: 600;
  color: var(--text-primary);
  text-align: center;
  border-bottom: 1px solid var(--border);
  min-height: 45px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.time-label {
  min-height: 40px;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 4px;
  font-size: 11px;
}

.day-column .time-slot {
  min-height: 40px;
  border-bottom: 1px solid var(--border);
  border-right: none;
  flex-direction: column;
  justify-content: flex-start;
}

.day-column .time-label {
  display: none;
}

.day-column .slot-content {
  padding: 2px;
}

/* Month View */
.month-grid {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 1px;
  padding: 20px;
  background: var(--border);
}

.day-name {
  background: var(--bg-dark);
  padding: 12px;
  text-align: center;
  font-weight: 600;
  font-size: 12px;
  color: var(--text-secondary);
  text-transform: uppercase;
}

.calendar-day {
  background: var(--bg-dark);
  border: 1px solid var(--border);
  padding: 12px;
  min-height: 100px;
  cursor: pointer;
  transition: all 0.3s ease;
  border-radius: 8px;
}

.calendar-day:hover {
  background: rgba(99, 102, 241, 0.1);
  border-color: var(--accent);
  transform: translateY(-2px);
  box-shadow: 0 8px 16px rgba(99, 102, 241, 0.2);
}

.calendar-day.other-month {
  opacity: 0.5;
  cursor: default;
}

.calendar-day.other-month:hover {
  background: var(--bg-dark);
  border-color: var(--border);
  transform: none;
  box-shadow: none;
}

.day-number {
  font-weight: 700;
  font-size: 14px;
  color: var(--accent);
  margin-bottom: 8px;
}

.day-content {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.day-total {
  font-size: 13px;
  font-weight: 600;
  color: var(--text-primary);
}

.day-count {
  font-size: 11px;
  color: var(--text-secondary);
}

/* Settings Content */
.settings-content {
  max-width: 800px;
  margin: 0 auto;
}

.settings-content h2 {
  margin-bottom: 30px;
  font-size: 24px;
}

.settings-sections {
  display: flex;
  flex-direction: column;
  gap: 30px;
}

.settings-section {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 25px;
}

.settings-section h3 {
  margin-top: 0;
  margin-bottom: 20px;
  font-size: 18px;
  color: var(--accent);
}

.settings-section form {
  display: flex;
  flex-direction: column;
  gap: 15px;
}

.account-info {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.account-info p {
  margin: 0;
  padding: 12px;
  background: rgba(99, 102, 241, 0.05);
  border: 1px solid var(--border);
  border-radius: 6px;
  font-size: 14px;
}

.account-info strong {
  color: var(--accent);
}

.form-group small {
  display: block;
  margin-top: 4px;
  color: var(--text-secondary);
  font-size: 12px;
}

/* Categories Content */
.categories-content {
  max-width: 1200px;
  margin: 0 auto;
}

.categories-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 30px;
  flex-wrap: wrap;
  gap: 20px;
}

.categories-header h2 {
  font-size: 24px;
  margin: 0;
}

#newCategoryBtn {
  padding: 10px 20px;
  background: var(--success);
  border: none;
  border-radius: 6px;
  color: white;
  cursor: pointer;
  font-weight: 600;
  transition: all 0.3s ease;
}

#newCategoryBtn:hover {
  background: #059669;
  transform: translateY(-2px);
}

#categoriesList {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 20px;
}

.category-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 12px;
  overflow: hidden;
  transition: all 0.3s ease;
  display: flex;
  flex-direction: column;
}

.category-card:hover {
  border-color: var(--accent);
  box-shadow: 0 8px 24px rgba(99, 102, 241, 0.15);
  transform: translateY(-4px);
}

.category-color {
  width: 100%;
  height: 80px;
  border-bottom: 1px solid var(--border);
}

.category-info {
  padding: 15px;
  flex: 1;
}

.category-info h3 {
  margin: 0 0 8px 0;
  font-size: 16px;
  color: var(--text-primary);
}

.category-info p {
  margin: 0;
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.4;
}

.budget-progress {
  padding: 15px;
  border-top: 1px solid var(--border);
}

.budget-progress-label {
  display: flex;
  justify-content: space-between;
  margin-bottom: 8px;
  font-size: 12px;
}

.budget-progress-label-left {
  color: var(--text-secondary);
}

.budget-progress-label-right {
  color: var(--text-secondary);
  font-weight: 600;
}

.budget-progress-label-right.over-budget {
  color: var(--danger);
}

.progress-bar {
  width: 100%;
  height: 8px;
  background: var(--bg-dark);
  border-radius: 4px;
  overflow: hidden;
  border: 1px solid var(--border);
}

.progress-fill {
  height: 100%;
  background: var(--success);
  transition: width 0.3s ease;
}

.progress-fill.warning {
  background: #f59e0b;
}

.progress-fill.danger {
  background: var(--danger);
}

.category-actions {
  display: flex;
  gap: 8px;
  padding: 0 15px 15px 15px;
  border-top: 1px solid var(--border);
  padding-top: 15px;
}

.edit-btn,
.delete-btn {
  flex: 1;
  padding: 8px;
  background: transparent;
  border: 1px solid var(--border);
  border-radius: 6px;
  color: var(--text-primary);
  cursor: pointer;
  transition: all 0.3s ease;
  font-size: 16px;
}

.edit-btn:hover {
  background: var(--accent);
  border-color: var(--accent);
}

.delete-btn:hover {
  background: var(--danger);
  border-color: var(--danger);
}

/* Modal */
.modal {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.7);
  display: flex;
  justify-content: center;
  align-items: center;
  z-index: 1000;
  animation: fadeIn 0.3s ease;
}

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

.modal-content {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 30px;
  width: 100%;
  max-width: 500px;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
  animation: slideUp 0.3s ease;
}

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

.modal-content h2 {
  margin-top: 0;
  margin-bottom: 20px;
  font-size: 20px;
}

.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 20px;
  border-bottom: 1px solid var(--border);
  padding-bottom: 15px;
}

.modal-header h2 {
  margin: 0;
}

.modal-close {
  background: none;
  border: none;
  color: var(--text-secondary);
  font-size: 28px;
  cursor: pointer;
  padding: 0;
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.2s ease;
}

.modal-close:hover {
  color: var(--text-primary);
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 15px;
}

.category-select-wrapper {
  display: flex;
  gap: 8px;
}

.category-select-wrapper select {
  flex: 1;
}

.btn-new-category {
  padding: 10px 12px;
  background: var(--accent);
  border: none;
  border-radius: 6px;
  color: white;
  cursor: pointer;
  font-size: 12px;
  white-space: nowrap;
  transition: all 0.3s ease;
}

.btn-new-category:hover {
  background: var(--accent-hover);
}

.btn-danger {
  background: var(--danger);
  color: white;
  border: none;
}

.btn-danger:hover {
  background: #dc2626;
}

@media (max-width: 600px) {
  .form-row {
    grid-template-columns: 1fr;
  }

  .category-select-wrapper {
    flex-direction: column;
  }

  .modal-content {
    margin: 20px;
    max-width: none;
  }
}

/* Form Styles */
.form-group {
  margin-bottom: 20px;
}

.form-group label {
  display: block;
  margin-bottom: 8px;
  font-weight: 600;
  color: var(--text-primary);
  font-size: 14px;
}

.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  padding: 10px 12px;
  background: var(--bg-dark);
  border: 1px solid var(--border);
  border-radius: 6px;
  color: var(--text-primary);
  font-family: inherit;
  font-size: 14px;
  transition: all 0.3s ease;
  appearance: none;
  cursor: pointer;
}

.form-group select {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%23f1f5f9' d='M6 9L1 4h10z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 10px center;
  padding-right: 30px;
}

.form-group select option {
  background: var(--bg-dark);
  color: var(--text-primary);
}

.form-group select option:checked {
  background: var(--accent);
  color: white;
}

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

.form-group textarea {
  resize: vertical;
  min-height: 80px;
}

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

.color-picker input {
  width: 60px;
  height: 40px;
  padding: 4px;
  cursor: pointer;
}

.color-preview {
  width: 40px;
  height: 40px;
  border-radius: 6px;
  border: 1px solid var(--border);
}

.form-actions {
  display: flex;
  gap: 10px;
  margin-top: 25px;
}

.btn-primary,
.btn-secondary {
  flex: 1;
  padding: 10px 16px;
  border: none;
  border-radius: 6px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.3s ease;
}

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

.btn-primary:hover {
  background: var(--accent-hover);
  transform: translateY(-2px);
}

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

.btn-secondary:hover {
  background: var(--bg-dark);
  border-color: var(--accent);
}

/* Notifications */
#notifications-container {
  position: fixed;
  top: 20px;
  right: 20px;
  z-index: 2000;
  max-width: 400px;
}

.notification {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 16px;
  margin-bottom: 12px;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.4);
  animation: slideInRight 0.3s ease;
  overflow: hidden;
}

@keyframes slideInRight {
  from {
    transform: translateX(400px);
    opacity: 0;
  }
  to {
    transform: translateX(0);
    opacity: 1;
  }
}

.notification.notification-hide {
  animation: slideOutRight 0.3s ease forwards;
}

@keyframes slideOutRight {
  from {
    transform: translateX(0);
    opacity: 1;
  }
  to {
    transform: translateX(400px);
    opacity: 0;
  }
}

.notification-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  color: var(--text-primary);
  font-size: 14px;
}

.notification-close {
  background: none;
  border: none;
  color: var(--text-secondary);
  cursor: pointer;
  font-size: 20px;
  padding: 0;
  width: 24px;
  height: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.2s ease;
}

.notification-close:hover {
  color: var(--text-primary);
}

.notification-progress {
  height: 3px;
  background: currentColor;
  animation: progress linear var(--duration, 4s) forwards;
  margin-top: 8px;
}

@keyframes progress {
  from {
    width: 100%;
  }
  to {
    width: 0%;
  }
}

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

.notification-success .notification-progress {
  background: var(--success);
}

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

.notification-error .notification-progress {
  background: var(--danger);
}

.notification-warning {
  border-left: 4px solid #f59e0b;
  color: #f59e0b;
}

.notification-warning .notification-progress {
  background: #f59e0b;
}

.notification-info {
  border-left: 4px solid var(--accent);
  color: var(--accent);
}

.notification-info .notification-progress {
  background: var(--accent);
}

/* Budget Progress */
.budget-list {
  display: flex;
  flex-direction: column;
  gap: 15px;
}

.budget-item {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.budget-info {
  display: flex;
  justify-content: space-between;
  font-size: 13px;
  color: var(--text-primary);
}

.progress-bar {
  height: 8px;
  background: var(--bg-dark);
  border-radius: 4px;
  overflow: hidden;
}

.progress {
  height: 100%;
  border-radius: 4px;
}

/* Responsive */
@media (max-width: 768px) {
  .navbar {
    flex-direction: column;
    gap: 15px;
  }

  .navbar-center {
    order: -1;
  }

  .nav-buttons {
    width: 100%;
    justify-content: center;
    flex-wrap: wrap;
  }

  .nav-buttons button {
    flex: 1;
    min-width: 100px;
    font-size: 12px;
    padding: 6px 8px;
  }

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

  .chart.chart-full {
    grid-column: 1;
  }

  .login-card {
    margin: 20px;
  }

  .content {
    padding: 15px;
  }

  .dashboard-header {
    flex-direction: column;
    align-items: flex-start;
  }

  .month-selector {
    width: 100%;
  }

  .summary-card {
    grid-template-columns: 1fr;
  }

  .categories-header {
    flex-direction: column;
    align-items: flex-start;
  }

  #newCategoryBtn {
    width: 100%;
  }

  #categoriesList {
    grid-template-columns: 1fr;
  }

  .modal-content {
    margin: 20px;
  }

  .day-header,
  .week-header,
  .month-header {
    flex-direction: column;
    align-items: flex-start;
  }

  .day-header button,
  .week-header button,
  .month-header button {
    width: 100%;
  }

  .day-header input {
    width: 100%;
  }

  .expense-item {
    flex-direction: column;
    align-items: flex-start;
    gap: 10px;
  }

  .expense-amount {
    align-self: flex-end;
  }

  .time-column {
    width: 60px;
  }

  .day-column {
    width: 80px;
  }

  .time-label {
    width: 60px;
    padding: 8px;
    font-size: 10px;
  }

  .expense-tile {
    font-size: 9px;
    padding: 4px;
    height: 25px;
  }

  .expense-tile span:last-child {
    display: none;
  }
}

/* ─── Mobile Responsiveness (extended) ──────────────────────────────────────── */

/* Hamburger menu button (hidden on desktop) */
.navbar-toggle {
  display: none;
  background: none;
  border: 1px solid var(--border);
  border-radius: 6px;
  color: var(--text-primary);
  padding: 6px 10px;
  cursor: pointer;
  font-size: 18px;
  line-height: 1;
}

@media (max-width: 768px) {
  /* Navbar: hamburger collapse */
  .navbar {
    position: relative;
    flex-wrap: wrap;
    padding: 12px 16px;
    gap: 0;
  }

  .navbar h1 {
    font-size: 18px;
    flex: 1;
  }

  .navbar-center {
    display: none;
  }

  .navbar-toggle {
    display: block;
  }

  .nav-buttons {
    display: none;
    width: 100%;
    flex-direction: column;
    gap: 6px;
    padding-top: 12px;
  }

  .nav-buttons.open {
    display: flex;
  }

  .nav-buttons button,
  .nav-buttons select {
    width: 100%;
    text-align: left;
    padding: 10px 14px;
    font-size: 14px;
    border-radius: 8px;
  }

  /* Content padding */
  .content {
    padding: 12px;
  }

  /* Dashboard header */
  .dashboard-header {
    flex-direction: column;
    align-items: flex-start;
    gap: 10px;
    margin-bottom: 16px;
  }

  .month-selector {
    width: 100%;
    display: flex;
    gap: 8px;
  }

  .month-selector button {
    flex-shrink: 0;
    padding: 8px 12px;
    font-size: 13px;
  }

  .month-selector input[type="month"] {
    flex: 1;
    min-width: 0;
  }

  /* Summary card */
  .summary-card {
    grid-template-columns: repeat(3, 1fr);
    gap: 8px;
  }

  .summary-item .label {
    font-size: 11px;
  }

  .summary-item .value {
    font-size: 16px;
  }

  /* Charts */
  .charts-container {
    grid-template-columns: 1fr;
    gap: 12px;
  }

  .chart {
    padding: 14px;
  }

  .chart h3 {
    font-size: 13px;
    margin-bottom: 10px;
  }

  /* Search bar stacks on mobile */
  .expenses-search-bar {
    flex-direction: column;
    gap: 8px;
  }

  .expenses-search-bar input[type="text"],
  .expenses-search-bar select {
    width: 100%;
  }

  /* Expenses list */
  .expenses-list {
    max-height: 300px;
  }

  .expense-item {
    padding: 10px;
    gap: 6px;
  }

  /* Categories grid */
  #categoriesList {
    grid-template-columns: 1fr;
  }

  .category-card {
    padding: 14px;
  }

  /* Settings page */
  .settings-section {
    padding: 14px;
  }

  /* Modal full-screen on mobile */
  .modal {
    padding: 0;
    align-items: flex-end;
  }

  .modal-content {
    margin: 0;
    border-radius: 16px 16px 0 0;
    max-height: 90vh;
    overflow-y: auto;
    width: 100%;
    max-width: 100%;
  }

  /* Calendar views */
  .calendar-views {
    flex-wrap: wrap;
    gap: 6px;
  }

  .view-btn {
    flex: 1;
    min-width: 80px;
    font-size: 12px;
    padding: 6px 8px;
  }

  .week-grid {
    font-size: 11px;
  }

  .week-header-row {
    font-size: 10px;
  }

  /* Analytics / budget progress bars */
  .budget-item {
    flex-direction: column;
    align-items: flex-start;
    gap: 4px;
  }

  .budget-bar-container {
    width: 100%;
  }
}

@media (max-width: 400px) {
  /* Very small screens */
  .summary-card {
    grid-template-columns: 1fr;
  }

  .navbar h1 {
    font-size: 16px;
  }

  .content {
    padding: 8px;
  }

  .chart {
    padding: 10px;
  }

  .modal-content {
    max-height: 95vh;
  }
}

/* Expenses list header with export button */
.expenses-list-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 12px;
}

.expenses-list-header h3 {
  margin: 0;
}

.btn-export {
  padding: 6px 14px;
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text-secondary);
  border-radius: 6px;
  cursor: pointer;
  font-size: 13px;
  font-weight: 500;
  transition: all 0.2s ease;
  white-space: nowrap;
}

.btn-export:hover {
  background: var(--accent);
  border-color: var(--accent);
  color: white;
}

/* Backup & Restore Settings Section */
.settings-description {
  font-size: 13px;
  color: var(--text-secondary);
  margin-bottom: 12px;
  line-height: 1.5;
}

.backup-actions {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

.backup-action {
  background: var(--bg-dark);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 16px;
}

.backup-action h4 {
  margin: 0 0 8px 0;
  font-size: 14px;
  color: var(--text-primary);
}

.backup-restore-row {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}

.restore-mode-label {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  color: var(--text-secondary);
  cursor: pointer;
}

.restore-mode-label input[type="checkbox"] {
  width: auto;
  cursor: pointer;
}

@media (max-width: 768px) {
  .backup-actions {
    grid-template-columns: 1fr;
  }

  .backup-restore-row {
    flex-direction: column;
    align-items: flex-start;
  }
}