:root {
  /* PRESERVED ORIGINAL COLOR PALETTE */
  --deep-blue: #0d2d5e;
  --ocean-blue: #1a4b8c;
  --ocean-blue-dark: #0f3a70;
  --emerald-green: #2ecc71;
  --emerald-green-dark: #27ae60;
  --sky-teal: #3498db;
  --sky-teal-dark: #2980b9;
  --amber: #f1c40f;
  --amber-dark: #f39c12;
  --red-coral: #e74c3c;
  --red-coral-dark: #c0392b;
  --purple: #9b59b6;
  --purple-dark: #8e44ad;
  --medium-gray: #e1e5eb;
  --light-gray: #f8f9fa;
  --charcoal: #1a1d28;
  --stone-white: #ffffff;

  /* Fintech Gradients */
  --gradient-primary: linear-gradient(135deg, var(--ocean-blue) 0%, var(--sky-teal) 100%);
  --gradient-primary-dark: linear-gradient(135deg, var(--ocean-blue-dark) 0%, var(--sky-teal-dark) 100%);
  --gradient-success: linear-gradient(135deg, var(--emerald-green) 0%, var(--sky-teal) 100%);
  --gradient-warning: linear-gradient(135deg, var(--amber) 0%, #f39c12 100%);
  --gradient-danger: linear-gradient(135deg, var(--red-coral) 0%, #c0392b 100%);
  --gradient-accent: linear-gradient(135deg, var(--purple) 0%, var(--sky-teal) 100%);
  
  /* Card Gradients */
  --gradient-card-blue: linear-gradient(135deg, #1a4b8c 0%, #2980b9 100%);
  --gradient-card-green: linear-gradient(135deg, #27ae60 0%, #2ecc71 100%);
  --gradient-card-teal: linear-gradient(135deg, #2980b9 0%, #3498db 100%);
  --gradient-card-purple: linear-gradient(135deg, #8e44ad 0%, #9b59b6 100%);
  
  /* Background Gradients */
  --gradient-bg-primary: linear-gradient(135deg, #f8f9fa 0%, #e1e5eb 100%);
  --gradient-bg-secondary: linear-gradient(135deg, #ffffff 0%, #f8f9fa 100%);
  
  /* Glass Morphism */
  --glass-bg: rgba(255, 255, 255, 0.98);
  --glass-border: rgba(255, 255, 255, 0.2);
  --glass-shadow: 0 8px 32px rgba(13, 45, 94, 0.08);
  
  /* Semantic Colors */
  --primary: var(--ocean-blue);
  --primary-dark: var(--ocean-blue-dark);
  --secondary: var(--emerald-green);
  --secondary-dark: var(--emerald-green-dark);
  --accent: var(--sky-teal);
  --accent-dark: var(--sky-teal-dark);
  --warning: var(--amber);
  --warning-dark: var(--amber-dark);
  --danger: var(--red-coral);
  --danger-dark: var(--red-coral-dark);
  --success: var(--emerald-green);
  --success-dark: var(--emerald-green-dark);
  --info: var(--purple);
  --info-dark: var(--purple-dark);
  
  /* Background Colors */
  --bg-primary: var(--stone-white);
  --bg-secondary: var(--light-gray);
  --bg-tertiary: var(--medium-gray);
  
  /* Text Colors */
  --text-primary: var(--charcoal);
  --text-secondary: #4a5568;
  --text-tertiary: #718096;
  --text-light: var(--stone-white);
  
  /* Border & Shadow */
  --border-color: rgba(26, 75, 140, 0.08);
  --border-gradient: linear-gradient(90deg, rgba(26, 75, 140, 0.1), rgba(52, 152, 219, 0.1));
  --border-radius: 12px;
  --border-radius-lg: 20px;
  --border-radius-sm: 8px;
  --shadow-sm: 0 2px 8px rgba(13, 45, 94, 0.06);
  --shadow-md: 0 4px 16px rgba(13, 45, 94, 0.08);
  --shadow-lg: 0 8px 32px rgba(13, 45, 94, 0.12);
  --shadow-inset: inset 0 2px 4px rgba(13, 45, 94, 0.03);
  --shadow-glow: 0 0 20px rgba(26, 75, 140, 0.1);
  
  /* Typography */
  --font-family: 'Poppins', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-family-heading: 'Orbitron', 'Audiowide', sans-serif;
  --font-size-xs: 0.75rem;
  --font-size-sm: 0.875rem;
  --font-size-base: 1rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.25rem;
  --font-size-2xl: 1.5rem;
  --font-size-3xl: 1.875rem;
  --font-size-4xl: 2.25rem;
  --font-weight-light: 300;
  --font-weight-normal: 400;
  --font-weight-medium: 500;
  --font-weight-semibold: 600;
  --font-weight-bold: 700;
  --line-height-tight: 1.25;
  --line-height-normal: 1.5;
  --line-height-relaxed: 1.75;
  
  /* Spacing */
  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;
  --spacing-2xl: 3rem;
  --spacing-3xl: 4rem;
  
  /* Transitions */
  --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-normal: 250ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 350ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-bounce: 400ms cubic-bezier(0.68, -0.55, 0.265, 1.55);
  
  /* Layout */
  --container-max-width: 1400px;
  --container-padding: var(--spacing-lg);
  --header-height: 70px;
  --sidebar-width: 280px;
  --sidebar-collapsed-width: 80px;
  
  /* Z-index layers */
  --z-dropdown: 1000;
  --z-sticky: 1020;
  --z-fixed: 1030;
  --z-modal-backdrop: 1040;
  --z-modal: 1050;
  --z-popover: 1060;
  --z-tooltip: 1070;
  
  /* Form Elements */
  --input-height: 48px;
  --input-padding: 0 var(--spacing-md);
  --input-border-width: 1.5px;
  --checkbox-size: 20px;
  --radio-size: 20px;
  
  /* Button Sizes */
  --btn-height-sm: 40px;
  --btn-height-md: 48px;
  --btn-height-lg: 56px;
  --btn-padding-x-sm: var(--spacing-md);
  --btn-padding-x-md: var(--spacing-lg);
  --btn-padding-x-lg: var(--spacing-xl);
  
  /* Sidebar Colors */
  --sidebar-bg: linear-gradient(180deg, var(--ocean-blue) 0%, var(--ocean-blue-dark) 100%);
  --sidebar-text: rgba(255, 255, 255, 0.9);
  --sidebar-text-hover: var(--stone-white);
  --sidebar-icon: rgba(255, 255, 255, 0.8);
  --sidebar-icon-hover: var(--stone-white);
  --sidebar-active-bg: rgba(255, 255, 255, 0.15);
  --sidebar-hover-bg: rgba(255, 255, 255, 0.08);
  --sidebar-border: rgba(255, 255, 255, 0.1);
  --sidebar-shadow: 4px 0 20px rgba(13, 45, 94, 0.1);
  
  /* Dashboard Colors */
  --dashboard-bg: linear-gradient(135deg, #f8fafc 0%, #f1f5f9 100%);
  --card-bg: var(--glass-bg);
  --card-border: var(--border-color);
  --card-shadow: var(--shadow-sm);
  
  /* Status Colors */
  --success-bg: rgba(46, 204, 113, 0.12);
  --success-border: rgba(46, 204, 113, 0.2);
  --warning-bg: rgba(241, 196, 15, 0.12);
  --warning-border: rgba(241, 196, 15, 0.2);
  --danger-bg: rgba(231, 76, 60, 0.12);
  --danger-border: rgba(231, 76, 60, 0.2);
  --info-bg: rgba(52, 152, 219, 0.12);
  --info-border: rgba(52, 152, 219, 0.2);
  
  /* Chart Colors */
  --chart-color-1: var(--sky-teal);
  --chart-color-2: var(--emerald-green);
  --chart-color-3: var(--purple);
  --chart-color-4: var(--amber);
  --chart-color-5: var(--red-coral);
}

/* ============ BASE STYLES ============ */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  line-height: var(--line-height-normal);
  color: var(--text-primary);
  background: var(--dashboard-bg);
  min-height: 100vh;
  overflow-x: hidden;
}

/* ============ UTILITY CLASSES ============ */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* ============ FOCUS STYLES ============ */
:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 2px;
  border-radius: var(--border-radius-sm);
}

/* ============ SCROLLBAR ============ */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

::-webkit-scrollbar-track {
  background: var(--bg-secondary);
  border-radius: 10px;
}

::-webkit-scrollbar-thumb {
  background: var(--primary);
  border-radius: 10px;
  border: 2px solid var(--bg-secondary);
}

::-webkit-scrollbar-thumb:hover {
  background: var(--primary-dark);
}

/* ============ SELECTION ============ */
::selection {
  background: rgba(26, 75, 140, 0.2);
  color: var(--text-primary);
}

/* ============ SIDEBAR LAYOUT ============ */

/* Layout Container */
.layout-container {
  display: flex;
  min-height: 100vh;
  position: relative;
  padding-top: var(--header-height);
}

/* Header Styles */
header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--header-height);
  background: var(--glass-bg);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border-color);
  box-shadow: var(--shadow-sm);
  z-index: var(--z-fixed);
  padding: 0 var(--container-padding);
  display: flex;
  align-items: center;
}

/* Top Bar */
.topbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  width: 100%;
  max-width: var(--container-max-width);
  margin: 0 auto;
  height: 100%;
}

/* Header Left */
.header-left {
  display: flex;
  align-items: center;
  gap: var(--spacing-lg);
}

/* Menu Toggle Button */
.menu-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  background: var(--gradient-primary);
  border: none;
  border-radius: var(--border-radius);
  color: var(--text-light);
  font-size: var(--font-size-lg);
  cursor: pointer;
  transition: all var(--transition-normal);
  flex-shrink: 0;
}

.menu-toggle:hover {
  background: var(--gradient-primary-dark);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.menu-toggle i {
  transition: transform var(--transition-normal);
}

/* Brand Logo */
.brand-logo {
  font-family: var(--font-family-heading);
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-bold);
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  letter-spacing: 0.5px;
  white-space: nowrap;
}

/* User Controls */
.user-controls {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
}

/* User Info */
.user-info {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-sm) var(--spacing-md);
  border-radius: var(--border-radius);
  cursor: pointer;
  transition: all var(--transition-normal);
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  position: relative;
}

.user-info:hover {
  background: var(--gradient-primary);
  border-color: var(--primary);
}

.user-info:hover .user-name,
.user-info:hover .user-avatar span {
  color: var(--text-light);
}

.user-avatar {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--gradient-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-light);
  font-weight: var(--font-weight-bold);
  font-size: var(--font-size-base);
  flex-shrink: 0;
}

.user-name {
  font-weight: var(--font-weight-medium);
  color: var(--text-primary);
  transition: color var(--transition-normal);
}

.user-info i {
  font-size: var(--font-size-xs);
  margin-left: var(--spacing-xs);
  transition: transform var(--transition-normal);
}

.user-info.active i {
  transform: rotate(180deg);
}

/* User Dropdown */
.user-dropdown {
  position: absolute;
  top: calc(100% + var(--spacing-sm));
  right: 0;
  min-width: 200px;
  background: var(--glass-bg);
  backdrop-filter: blur(10px);
  border-radius: var(--border-radius);
  box-shadow: var(--shadow-lg);
  padding: var(--spacing-sm) 0;
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition: all var(--transition-normal);
  z-index: var(--z-dropdown);
  border: 1px solid var(--border-color);
}

.user-info.active .user-dropdown {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.user-dropdown a {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-sm) var(--spacing-md);
  text-decoration: none;
  color: var(--text-secondary);
  transition: all var(--transition-fast);
}

.user-dropdown a:hover {
  background: var(--gradient-primary);
  color: var(--text-light);
}

.user-dropdown a i {
  width: 20px;
  text-align: center;
  font-size: var(--font-size-sm);
}

.dropdown-divider {
  height: 1px;
  background: var(--border-color);
  margin: var(--spacing-xs) 0;
}

.logout-btn {
  color: var(--danger) !important;
}

.logout-btn:hover {
  background: var(--gradient-danger) !important;
  color: var(--text-light) !important;
}

/* Sidebar */
.sidebar {
  position: fixed;
  top: var(--header-height);
  left: 0;
  bottom: 0;
  width: var(--sidebar-width);
  background: var(--sidebar-bg);
  border-right: 1px solid var(--sidebar-border);
  box-shadow: var(--sidebar-shadow);
  z-index: var(--z-sticky);
  transition: transform var(--transition-normal), width var(--transition-normal);
  overflow-y: auto;
  overflow-x: hidden;
  padding: var(--spacing-lg) 0;
}

.sidebar.collapsed {
  width: var(--sidebar-collapsed-width);
}

.sidebar.mobile-open {
  transform: translateX(0) !important;
  box-shadow: 4px 0 30px rgba(0, 0, 0, 0.15);
}

/* Sidebar Content */
.sidebar-content {
  padding: 0 var(--spacing-md);
}

/* Sidebar Menu */
.sidebar-menu {
  list-style: none;
}

.sidebar-menu > li {
  margin-bottom: var(--spacing-xs);
}

.sidebar-menu > li > a {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  padding: var(--spacing-md);
  color: var(--sidebar-text);
  text-decoration: none;
  border-radius: var(--border-radius);
  transition: all var(--transition-normal);
  white-space: nowrap;
  overflow: hidden;
  position: relative;
}

.sidebar-menu > li > a:hover,
.sidebar-menu > li > a.active {
  background: var(--sidebar-hover-bg);
  color: var(--sidebar-text-hover);
}

.sidebar-menu > li > a.active {
  background: var(--sidebar-active-bg);
  font-weight: var(--font-weight-medium);
}

.sidebar-menu > li > a.active::before {
  content: '';
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 4px;
  height: 60%;
  background: var(--text-light);
  border-radius: 0 var(--border-radius-sm) var(--border-radius-sm) 0;
}

.sidebar-menu > li > a i {
  font-size: var(--font-size-lg);
  color: var(--sidebar-icon);
  transition: color var(--transition-normal);
  min-width: 24px;
  text-align: center;
  flex-shrink: 0;
}

.sidebar-menu > li > a:hover i,
.sidebar-menu > li > a.active i {
  color: var(--sidebar-icon-hover);
}

.sidebar-menu > li > a span {
  transition: opacity var(--transition-normal);
  flex: 1;
}

.sidebar.collapsed .sidebar-menu > li > a span {
  opacity: 0;
  width: 0;
  display: none;
}

/* Submenu Arrow */
.submenu-arrow {
  margin-left: auto;
  transition: transform var(--transition-normal);
  font-size: var(--font-size-xs);
}

/* Sidebar Submenu */
.sidebar-submenu {
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--transition-normal);
  padding-left: var(--spacing-xl);
  margin-top: var(--spacing-xs);
}

.has-submenu.active .sidebar-submenu {
  max-height: 500px;
}

.sidebar-submenu a {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-sm) var(--spacing-md);
  color: var(--sidebar-text);
  text-decoration: none;
  border-radius: var(--border-radius-sm);
  margin-bottom: var(--spacing-xs);
  transition: all var(--transition-fast);
  font-size: var(--font-size-sm);
}

.sidebar-submenu a:hover {
  background: var(--sidebar-hover-bg);
  color: var(--sidebar-text-hover);
  padding-left: var(--spacing-lg);
}

.sidebar-submenu a i {
  font-size: var(--font-size-sm);
  width: 20px;
  text-align: center;
  flex-shrink: 0;
}

.sidebar.collapsed ~ .main-content {
  left: var(--sidebar-collapsed-width);
}

/* ============ RESPONSIVE DESIGN ============ */

/* Tablet (max-width: 1024px) */
@media (max-width: 1024px) {
  .sidebar {
    transform: translateX(-100%);
    width: var(--sidebar-width);
  }
  
  .sidebar.collapsed {
    transform: translateX(-100%);
    width: var(--sidebar-width);
  }
  
  .main-content {
    left: 0 !important;
    width: 100% !important;
  }
  
  .sidebar.collapsed ~ .main-content {
    left: 0 !important;
    width: 100% !important;
  }
  
  .brand-logo {
    font-size: var(--font-size-lg);
  }
  
  .menu-toggle {
    background: var(--gradient-primary);
  }
}

/* Large Mobile (max-width: 768px) */
@media (max-width: 768px) {
  :root {
    --header-height: 60px;
    --container-padding: var(--spacing-md);
    --sidebar-width: 260px;
  }
  
  header {
    padding: 0 var(--spacing-md);
  }
  
  .user-name {
    display: none;
  }
  
  .user-info {
    padding: var(--spacing-xs);
  }
  
  .user-avatar {
    width: 32px;
    height: 32px;
    font-size: var(--font-size-sm);
  }
  
  .brand-logo {
    font-size: var(--font-size-base);
  }
  
  .menu-toggle {
    width: 36px;
    height: 36px;
    font-size: var(--font-size-base);
  }
}

/* Small Mobile (max-width: 480px) */
@media (max-width: 480px) {
  :root {
    --header-height: 56px;
    --sidebar-width: 240px;
  }
  
  .user-avatar {
    width: 28px;
    height: 28px;
  }
  
  .menu-toggle {
    width: 32px;
    height: 32px;
    font-size: var(--font-size-sm);
  }
  
  .header-left {
    gap: var(--spacing-md);
  }
}