:root {
  --bg-dark: #0f172a;
  --bg-sidebar: rgba(30, 41, 59, 0.7);
  --bg-card: rgba(30, 41, 59, 0.8);
  --glass-border: rgba(255, 255, 255, 0.1);
  --accent-blue: #3b82f6;
  --accent-green: #10b981;
  --accent-purple: #8b5cf6;
  --text-main: #f8fafc;
  --text-muted: #94a3b8;
  --border-color: #334155;
  --font-family: 'Inter', sans-serif;
  --hover-bg: rgba(255, 255, 255, 0.05);
}

[data-theme="light"] {
  --bg-dark: #f8fafc;
  --bg-sidebar: rgba(255, 255, 255, 0.85);
  --bg-card: rgba(255, 255, 255, 0.9);
  --glass-border: rgba(0, 0, 0, 0.1);
  --accent-blue: #2563eb;
  --accent-green: #059669;
  --text-main: #0f172a;
  --text-muted: #475569;
  --border-color: #cbd5e1;
  --hover-bg: rgba(0, 0, 0, 0.05);
}

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

body {
  font-family: var(--font-family);
  background: var(--bg-dark);
  background-image:
    radial-gradient(at 0% 0%, rgba(59, 130, 246, 0.15) 0px, transparent 50%),
    radial-gradient(at 100% 0%, rgba(139, 92, 246, 0.15) 0px, transparent 50%),
    radial-gradient(at 100% 100%, rgba(16, 185, 129, 0.1) 0px, transparent 50%);
  background-attachment: fixed;
  color: var(--text-main);
  min-height: 100vh;
  display: flex;
  overflow: hidden;
  transition: background-color 0.3s, color 0.3s;
}

/* Base Layout Container */
.app-container {
  display: flex;
  width: 100vw;
  height: 100vh;
}

/* Glassmorphism Sidebar */
.sidebar {
  width: 280px;
  background: var(--bg-sidebar);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-right: 1px solid var(--glass-border);
  display: flex;
  flex-direction: column;
  padding: 2rem 0;
  z-index: 10;
}

.logo {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 0 2rem 2rem 2rem;
  border-bottom: 1px solid var(--glass-border);
}

.logo-icon {
  font-size: 1.5rem;
}

.logo h2 {
  font-weight: 700;
  letter-spacing: -0.5px;
  background: linear-gradient(135deg, var(--text-main), var(--text-muted));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

nav {
  display: flex;
  flex-direction: column;
  flex-grow: 1;
  padding: 2rem 1rem;
  gap: 10px;
}

.nav-btn {
  background: transparent;
  border: none;
  color: var(--text-muted);
  text-align: left;
  padding: 12px 1rem;
  border-radius: 8px;
  font-size: 1rem;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.3s ease;
  font-family: var(--font-family);
}

.nav-btn:hover {
  background: var(--hover-bg);
  color: var(--text-main);
  transform: translateX(4px);
}

.nav-btn.active {
  background: rgba(59, 130, 246, 0.1);
  color: var(--accent-blue);
  box-shadow: inset 3px 0 0 var(--accent-blue);
}

.report-tab-btn {
  background: transparent;
  color: var(--text-muted);
  font-family: var(--font-family);
  font-weight: 500;
  transition: all 0.3s ease;
}

.report-tab-btn:hover {
  background: var(--hover-bg);
  color: var(--text-main);
}

.report-tab-btn.active {
  background: rgba(59, 130, 246, 0.1);
  color: var(--accent-blue);
  border-color: var(--accent-blue) !important;
}

.sidebar-footer {
  padding: 1rem 2rem;
  font-size: 0.85rem;
  color: var(--text-muted);
  border-top: 1px solid var(--glass-border);
}

/* Main Content Area */
.main-content {
  flex-grow: 1;
  overflow-y: auto;
  padding: 2rem 3rem;
  position: relative;
}

/* Views (Hiding logic) */
.view {
  display: none;
  animation: fadeIn 0.4s ease forwards;
}

.view.active-view {
  display: block;
}

/* Header & Typography */
header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 2rem;
}

h1 {
  font-size: 2rem;
  font-weight: 700;
  letter-spacing: -1px;
}

h2 {
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: 1rem;
}

.subtitle {
  color: var(--text-muted);
  margin-bottom: 1.5rem;
}

/* Buttons */
.primary-btn {
  background: linear-gradient(135deg, var(--accent-blue), #2563eb);
  color: #fff;
  border: none;
  padding: 10px 20px;
  border-radius: 8px;
  font-weight: 600;
  font-size: 0.95rem;
  cursor: pointer;
  box-shadow: 0 4px 14px rgba(59, 130, 246, 0.4);
  transition: transform 0.2s, box-shadow 0.2s;
  font-family: var(--font-family);
}

.primary-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(59, 130, 246, 0.6);
}

.submit-btn {
  background: var(--accent-green);
  color: #fff;
  border: none;
  width: 100%;
  padding: 12px;
  border-radius: 8px;
  font-weight: 600;
  cursor: pointer;
  margin-top: 10px;
  transition: all 0.2s;
  font-family: var(--font-family);
  font-size: 1rem;
}

.submit-btn:hover {
  background: #059669;
}

.action-btn {
  background: transparent;
  color: var(--text-muted);
  border: 1px solid var(--border-color);
  padding: 6px 12px;
  border-radius: 6px;
  font-size: 0.8rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s;
}

.action-btn:disabled {
  opacity: 0.45;
  cursor: not-allowed;
}

.delete-btn:hover {
  background: rgba(239, 68, 68, 0.15);
  color: #ef4444;
  border-color: rgba(239, 68, 68, 0.3);
}

/* Dashboard Metrics Grid */
.metrics-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
  margin-bottom: 3rem;
}

.metric-card {
  background: var(--bg-card);
  backdrop-filter: blur(12px);
  border: 1px solid var(--glass-border);
  border-radius: 16px;
  padding: 1.5rem;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
  transition: transform 0.3s;
  position: relative;
  overflow: hidden;
}

.metric-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
}

.metric-card.combined::before {
  background: var(--accent-purple);
}

.metric-card.bank::before {
  background: var(--accent-blue);
}

.metric-card.cash::before {
  background: var(--accent-green);
}

.metric-card:hover {
  transform: translateY(-5px);
}

.metric-card h3 {
  font-size: 0.95rem;
  color: var(--text-muted);
  font-weight: 500;
  margin-bottom: 10px;
}

.metric-value {
  font-size: 2.25rem;
  font-weight: 800;
  margin-bottom: 5px;
  letter-spacing: -1px;
}

.metric-subtitle {
  font-size: 0.8rem;
  color: var(--text-muted);
}

/* Tables */
.table-container {
  background: var(--bg-card);
  backdrop-filter: blur(12px);
  border: 1px solid var(--glass-border);
  border-radius: 12px;
  overflow: hidden;
}

table {
  width: 100%;
  border-collapse: collapse;
}

th,
td {
  padding: 10px 14px;
  text-align: left;
  border-bottom: 1px solid var(--border-color);
}

.compact-table th,
.compact-table td {
  padding: 6px 12px;
  font-size: 0.82rem;
}

.compact-table .action-btn {
  padding: 4px 8px;
  font-size: 0.75rem;
}

.compact-table .tag {
  padding: 2px 6px;
  font-size: 0.7rem;
}

th {
  background: rgba(255, 255, 255, 0.03);
  color: var(--text-muted);
  font-weight: 500;
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

td {
  font-size: 0.85rem;
}

option {
  background: var(--bg-dark);
  color: var(--text-main);
}


tbody tr {
  transition: background 0.2s;
}

tbody tr:hover {
  background: var(--hover-bg);
}

.tag {
  padding: 4px 10px;
  border-radius: 20px;
  font-size: 0.75rem;
  font-weight: 600;
}

.tag.income {
  background: rgba(16, 185, 129, 0.15);
  color: var(--accent-green);
}

.tag.expense {
  background: rgba(239, 68, 68, 0.15);
  color: #ef4444;
}

.tag.mode {
  background: rgba(59, 130, 246, 0.15);
  color: var(--accent-blue);
}

.month-freeze-panel {
  background: var(--bg-card);
  backdrop-filter: blur(12px);
  border: 1px solid var(--glass-border);
  border-radius: 12px;
  padding: 1rem;
  margin-bottom: 1rem;
}

.month-freeze-panel-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 1rem;
  margin-bottom: 1rem;
}

.month-freeze-panel-header h2 {
  margin-bottom: 0.25rem;
}

.month-freeze-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 0.85rem;
}

.month-freeze-card {
  border: 1px solid var(--glass-border);
  background: rgba(255, 255, 255, 0.03);
  border-radius: 10px;
  padding: 0.85rem;
}

.month-freeze-card-header {
  display: flex;
  justify-content: space-between;
  gap: 0.75rem;
  align-items: flex-start;
  margin-bottom: 0.75rem;
}

.month-freeze-title {
  font-weight: 700;
  color: var(--text-main);
}

.month-freeze-meta {
  margin-top: 0.2rem;
  font-size: 0.78rem;
  color: var(--text-muted);
}

.month-freeze-actions {
  display: flex;
  gap: 0.6rem;
  flex-wrap: wrap;
}

.freeze-tag-frozen {
  background: rgba(239, 68, 68, 0.15);
  color: #ef4444;
}

.freeze-tag-open {
  background: rgba(16, 185, 129, 0.15);
  color: var(--accent-green);
}

.freeze-check {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  font-size: 0.78rem;
  color: var(--text-main);
  font-weight: 600;
}

.freeze-check input {
  width: 16px;
  height: 16px;
  margin: 0;
}

.frozen-row {
  background: rgba(239, 68, 68, 0.06);
}

.frozen-row:hover {
  background: rgba(239, 68, 68, 0.1);
}

/* Modals */
.modal-backdrop {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.5);
  backdrop-filter: blur(4px);
  display: flex;
  justify-content: center;
  align-items: center;
  z-index: 100;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease;
}

.modal-backdrop.open {
  opacity: 1;
  pointer-events: auto;
}

.modal {
  background: var(--bg-card);
  border: 1px solid var(--glass-border);
  border-radius: 16px;
  width: 90%;
  max-width: 500px;
  padding: 2rem;
  box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
  transform: translateY(20px) scale(0.95);
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  color: var(--text-main);
}

.horizontal-modal {
  max-width: 800px;
}

.modal-backdrop.open .modal {
  transform: translateY(0) scale(1);
}

.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1.5rem;
}

.close-btn {
  background: transparent;
  border: none;
  color: var(--text-muted);
  font-size: 1.5rem;
  cursor: pointer;
}

.close-btn:hover {
  color: white;
}

/* Forms */
.form-row {
  display: flex;
  gap: 15px;
}

.form-row .form-group {
  flex: 1;
}

.form-group {
  margin-bottom: 15px;
  display: flex;
  flex-direction: column;
}

.form-group label {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: 6px;
  font-weight: 500;
}

input,
select {
  background: rgba(15, 23, 42, 0.1);
  border: 1px solid var(--border-color);
  color: var(--text-main);
  padding: 10px 14px;
  border-radius: 8px;
  font-family: var(--font-family);
  font-size: 0.95rem;
  transition: border-color 0.2s, box-shadow 0.2s;
  outline: none;
}

[data-theme="light"] input,
[data-theme="light"] select {
  background: rgba(255, 255, 255, 0.9);
}

input:focus,
select:focus {
  border-color: var(--accent-blue);
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.2);
}

/* Animations */
@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(10px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Custom Scrollbar */
::-webkit-scrollbar {
  width: 8px;
}

::-webkit-scrollbar-track {
  background: rgba(0, 0, 0, 0.1);
}

::-webkit-scrollbar-thumb {
  background: rgba(255, 255, 255, 0.1);
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: rgba(255, 255, 255, 0.2);
}

/* Print Styles */
@media print {

  body.print-mode .sidebar,
  body.print-mode header button,
  body.print-mode .nav-btn,
  .sidebar,
  .primary-btn {
    display: none !important;
  }

  html,
  body,
  .app-container,
  .main-content,
  .view,
  .table-container,
  .report-section {
    display: block !important;
    height: auto !important;
    min-height: auto !important;
    max-height: none !important;
    overflow: visible !important;
    margin: 0 !important;
    padding: 0 !important;
    width: auto !important;
  }

  body {
    background: #fff;
    color: #000;
  }

  table {
    border: 1px solid #ddd;
    border-collapse: collapse;
    width: 100%;
  }

  tr {
    page-break-inside: avoid;
    break-inside: avoid;
  }

  th,
  td {
    color: #000;
    border-color: #ddd;
  }
}

/* Mobile Responsiveness */
@media screen and (max-width: 768px) {
  .app-container {
    flex-direction: column;
    overflow-y: auto;
  }

  .sidebar {
    width: 100%;
    height: auto;
    padding: 1rem 0;
    position: sticky;
    top: 0;
    z-index: 50;
    border-right: none;
    border-bottom: 1px solid var(--glass-border);
  }

  .logo {
    padding: 0 1rem 1rem 1rem;
  }

  nav {
    flex-direction: row;
    overflow-x: auto;
    padding: 1rem;
    gap: 15px;
    -webkit-overflow-scrolling: touch;
  }

  .nav-btn {
    white-space: nowrap;
    text-align: center;
    padding: 8px 12px;
  }

  .nav-btn:hover {
    transform: none;
  }

  .nav-btn.active {
    box-shadow: 0 3px 0 var(--accent-blue) inset;
  }

  .sidebar-footer {
    display: none;
  }

  .main-content {
    padding: 1rem;
    overflow-y: visible;
  }

  header {
    flex-direction: column;
    align-items: flex-start;
    gap: 15px;
  }

  .metrics-grid {
    grid-template-columns: 1fr;
    gap: 1rem;
  }

  .table-container {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
  }

  .form-row {
    flex-direction: column;
    gap: 0;
  }

  .modal {
    padding: 1.5rem;
    width: 95%;
  }

  .reports-tabs {
    flex-wrap: wrap;
  }
}