:root {
  /* Common Design Tokens */
  --font-family: 'Outfit', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-xl: 28px;
  --transition-fast: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-normal: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Light Theme Variables */
[data-theme="light"] {
  --bg-app: #f4f6fb;
  --bg-surface: #ffffff;
  --bg-surface-elevated: #ffffff;
  --border-color: rgba(226, 232, 240, 0.8);
  --border-glowing: rgba(99, 102, 241, 0.3);
  --text-primary: #0f172a;
  --text-secondary: #64748b;
  --text-muted: #94a3b8;
  --accent-primary: #6366f1;
  --accent-secondary: #4f46e5;
  --accent-success: #10b981;
  --accent-danger: #ef4444;
  --accent-warning: #f59e0b;
  --shadow-sm: 0 2px 4px rgba(15, 23, 42, 0.04);
  --shadow-md: 0 10px 25px -5px rgba(15, 23, 42, 0.08);
  --shadow-lg: 0 20px 35px -10px rgba(15, 23, 42, 0.12);
  --glass-bg: #ffffff;
  --glass-border: #e2e8f0;
  --glass-blur: blur(0px);
}

/* Dark Theme Variables */
[data-theme="dark"] {
  --bg-app: #0b0f19;
  --bg-surface: #111827;
  --bg-surface-elevated: #1f2937;
  --border-color: rgba(255, 255, 255, 0.08);
  --border-glowing: rgba(99, 102, 241, 0.4);
  --text-primary: #f8fafc;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  --accent-primary: #6366f1;
  --accent-secondary: #818cf8;
  --accent-success: #34d399;
  --accent-danger: #f87171;
  --accent-warning: #fbbf24;
  --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.2);
  --shadow-md: 0 10px 25px -5px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 20px 35px -10px rgba(0, 0, 0, 0.6);
  --glass-bg: #111827;
  --glass-border: rgba(255, 255, 255, 0.1);
  --glass-blur: blur(0px);
}

/* Dark Glass Theme Variables */
[data-theme="glass"] {
  --bg-app: #050811;
  --bg-surface: rgba(17, 24, 39, 0.55);
  --bg-surface-elevated: rgba(31, 41, 55, 0.65);
  --border-color: rgba(255, 255, 255, 0.12);
  --border-glowing: rgba(129, 140, 248, 0.5);
  --text-primary: #ffffff;
  --text-secondary: #cbd5e1;
  --text-muted: #94a3b8;
  --accent-primary: #818cf8;
  --accent-secondary: #a5b4fc;
  --accent-success: #34d399;
  --accent-danger: #f87171;
  --accent-warning: #fbbf24;
  --shadow-sm: 0 4px 12px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 12px 32px rgba(0, 0, 0, 0.5);
  --shadow-lg: 0 24px 48px rgba(0, 0, 0, 0.7);
  --glass-bg: rgba(17, 24, 39, 0.55);
  --glass-border: rgba(255, 255, 255, 0.15);
  --glass-blur: blur(16px);
}

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

body {
  font-family: var(--font-family);
  background-color: var(--bg-app);
  color: var(--text-primary);
  line-height: 1.5;
  transition: background-color 0.3s ease, color 0.3s ease;
  min-height: 100vh;
  background-image: radial-gradient(circle at 10% 20%, rgba(99, 102, 241, 0.05) 0%, transparent 40%),
                    radial-gradient(circle at 90% 80%, rgba(16, 185, 129, 0.05) 0%, transparent 40%);
}

/* App Layout */
.app-container {
  display: flex;
  min-height: 100vh;
}

/* Sidebar Navigation */
.sidebar {
  width: 260px;
  background: var(--bg-surface);
  border-right: 1px solid var(--border-color);
  backdrop-filter: var(--glass-blur);
  display: flex;
  flex-direction: column;
  padding: 1.5rem 1rem;
  position: fixed;
  height: 100vh;
  z-index: 100;
  transition: var(--transition-normal);
}

.brand-header {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.5rem;
  margin-bottom: 2rem;
}

.brand-logo {
  width: 42px;
  height: 42px;
  background: linear-gradient(135deg, var(--accent-primary), #c084fc);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 1.3rem;
  box-shadow: 0 4px 14px rgba(99, 102, 241, 0.4);
}

.brand-title {
  font-size: 1.25rem;
  font-weight: 700;
  background: linear-gradient(135deg, var(--text-primary), var(--accent-primary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.nav-menu {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  list-style: none;
}

.nav-link {
  display: flex;
  align-items: center;
  gap: 0.85rem;
  padding: 0.85rem 1rem;
  color: var(--text-secondary);
  text-decoration: none;
  font-weight: 500;
  border-radius: var(--radius-md);
  transition: var(--transition-fast);
}

.nav-link:hover, .nav-link.active {
  color: var(--text-primary);
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-color);
}

.nav-link.active {
  color: var(--accent-primary);
  box-shadow: var(--shadow-sm);
}

/* Main Content Area */
.main-wrapper {
  margin-left: 260px;
  flex: 1;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

.top-bar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1.25rem 2rem;
  border-bottom: 1px solid var(--border-color);
  background: var(--bg-surface);
  backdrop-filter: var(--glass-blur);
  position: sticky;
  top: 0;
  z-index: 90;
}

.page-title-box h1 {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text-primary);
}

.page-title-box p {
  font-size: 0.875rem;
  color: var(--text-secondary);
}

/* Theme Switcher Bar */
.theme-selector {
  display: flex;
  background: var(--bg-app);
  border: 1px solid var(--border-color);
  padding: 4px;
  border-radius: 30px;
  gap: 4px;
}

.theme-btn {
  border: none;
  background: transparent;
  color: var(--text-secondary);
  padding: 6px 14px;
  border-radius: 20px;
  font-size: 0.85rem;
  font-weight: 500;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 6px;
  transition: var(--transition-fast);
}

.theme-btn.active {
  background: var(--accent-primary);
  color: #ffffff;
  box-shadow: 0 2px 8px rgba(99, 102, 241, 0.4);
}

.content-body {
  padding: 2rem;
  flex: 1;
}

/* Modern Card Components */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1.5rem;
  margin-bottom: 2rem;
}

.stat-card {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  backdrop-filter: var(--glass-blur);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  position: relative;
  overflow: hidden;
  box-shadow: var(--shadow-md);
  transition: var(--transition-normal);
}

.stat-card:hover {
  transform: translateY(-4px);
  border-color: var(--border-glowing);
  box-shadow: var(--shadow-lg);
}

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

.stat-icon {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
}

.stat-value {
  font-size: 1.85rem;
  font-weight: 700;
  letter-spacing: -0.5px;
  color: var(--text-primary);
  margin-bottom: 0.25rem;
}

.stat-label {
  font-size: 0.875rem;
  color: var(--text-secondary);
  font-weight: 500;
}

/* Account Cards Section */
.account-card-modern {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  backdrop-filter: var(--glass-blur);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  box-shadow: var(--shadow-md);
  position: relative;
  transition: var(--transition-normal);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  min-height: 190px;
}

.account-card-modern:hover {
  transform: translateY(-4px);
  border-color: var(--border-glowing);
}

.account-top {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
}

.account-badge {
  font-size: 0.75rem;
  font-weight: 600;
  padding: 4px 10px;
  border-radius: 20px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.account-balance-title {
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-top: 1rem;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.account-balance-amount {
  font-size: 1.6rem;
  font-weight: 700;
  color: var(--text-primary);
}

/* Modal Popup */
.modal {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.6);
  backdrop-filter: blur(8px);
  z-index: 1000;
  align-items: center;
  justify-content: center;
  padding: 1rem;
}

.modal.open {
  display: flex;
}

.modal-content {
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  width: 100%;
  max-width: 540px;
  padding: 2rem;
  box-shadow: var(--shadow-lg);
  animation: modalSlide 0.3s ease;
  max-height: 90vh;
  overflow-y: auto;
}

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

/* Form Styles */
.form-group {
  margin-bottom: 1.25rem;
}

.form-label {
  display: block;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 0.4rem;
}

.form-control, .form-select {
  width: 100%;
  padding: 0.75rem 1rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
  background: var(--bg-app);
  color: var(--text-primary);
  font-family: inherit;
  font-size: 0.95rem;
  outline: none;
  transition: var(--transition-fast);
}

.form-control:focus, .form-select:focus {
  border-color: var(--accent-primary);
  box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.2);
}

.btn {
  padding: 0.75rem 1.5rem;
  border-radius: var(--radius-md);
  font-weight: 600;
  font-size: 0.95rem;
  cursor: pointer;
  border: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  transition: var(--transition-fast);
}

.btn-primary {
  background: var(--accent-primary);
  color: #ffffff;
  box-shadow: 0 4px 12px rgba(99, 102, 241, 0.3);
}

.btn-primary:hover {
  background: var(--accent-secondary);
}

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

/* Table Design */
.table-container {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  backdrop-filter: var(--glass-blur);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-md);
}

.custom-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
}

.custom-table th {
  background: var(--bg-surface-elevated);
  padding: 1rem 1.25rem;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  border-bottom: 1px solid var(--border-color);
}

.custom-table td {
  padding: 1rem 1.25rem;
  border-bottom: 1px solid var(--border-color);
  color: var(--text-primary);
  font-size: 0.95rem;
}

.custom-table tr:last-child td {
  border-bottom: none;
}

/* Mobile Responsive Bottom Nav */
.mobile-nav {
  display: none;
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background: var(--bg-surface);
  border-top: 1px solid var(--border-color);
  backdrop-filter: var(--glass-blur);
  z-index: 100;
  padding: 0.5rem 1rem;
  justify-content: space-around;
}

@media (max-width: 768px) {
  .sidebar {
    display: none;
  }
  .main-wrapper {
    margin-left: 0;
  }
  .mobile-nav {
    display: flex;
  }
  .content-body {
    padding: 1rem 1rem 5rem 1rem;
  }
  .top-bar {
    padding: 1rem;
  }
}