:root {
  /* RGB values for theme system */
  --primary-color-rgb: 55, 65, 81;
  --secondary-color-rgb: 14, 165, 233;
  --accent-color-rgb: 132, 204, 22;
  --success-color-rgb: 132, 204, 22;
  --warning-color-rgb: 247, 37, 133;
  --light-color-rgb: 250, 250, 250;
  --dark-color-rgb: 31, 41, 55;
  --text-color-rgb: 31, 41, 55;
  --border-color-rgb: 222, 226, 230;
  
  /* Standard color variables */
  --primary-color: rgb(var(--primary-color-rgb));
  --secondary-color: rgb(var(--secondary-color-rgb));
  --accent-color: rgb(var(--accent-color-rgb));
  --success-color: rgb(var(--success-color-rgb));
  --warning-color: rgb(var(--warning-color-rgb));
  --light-color: rgb(var(--light-color-rgb));
  --dark-color: rgb(var(--dark-color-rgb));
  --text-color: rgb(var(--text-color-rgb));
  --text-light: #FAFAFA;
  --border-color: rgb(var(--border-color-rgb));
  
  /* Layout variables */
  --border-radius: 0.5rem;
  --transition: all 0.3s ease;
  --shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
  --sidebar-width: 250px;
  --sidebar-collapsed-width: 70px;
}

/* Dark Mode Variables */
[data-theme="dark"] {
  --primary-color: #374151;
  --secondary-color: #0EA5E9;
  --accent-color: #84CC16;
  --success-color: #84CC16;
  --warning-color: #f72585;
  --light-color: #1F2937;
  --dark-color: #FAFAFA;
  --text-color: #FAFAFA;
  --text-light: #1F2937;
  --border-color: #495057;
}

body {
  background: var(--light-color);
  color: var(--text-color);
  font-family: 'Poppins', sans-serif;
  transition: var(--transition);
  margin: 0;
  padding: 0;
  overflow-x: hidden;
}

/* Login page styles */
#login-container {
  min-height: 80vh;
  display: flex;
  align-items: center;
  justify-content: center;
}

#login-container .card {
  box-shadow: var(--shadow);
  border-radius: var(--border-radius);
  border: 1px solid var(--border-color);
  width: 100%;
  max-width: 450px;
}

#login-container .card-title {
  color: var(--primary-color);
  margin-bottom: 1.5rem;
  text-align: center;
  font-weight: 600;
}

/* Ensure text is readable in all contexts */
h1, h2, h3, h4, h5, h6 {
  color: var(--text-color);
  font-weight: 600;
}

.card-header h5 {
  color: var(--text-color);
}

.stats-content h3, .stats-content h5 {
  color: #fff;
}

/* Dashboard text colors */
.card-body {
  color: var(--text-color);
}

.card span {
  color: var(--text-color);
}

.table {
  color: var(--text-color);
}

/* Ensure proper contrast in dark mode */
[data-theme="dark"] .card {
  background-color: rgba(33, 37, 41, 0.8);
  border-color: var(--border-color);
}

[data-theme="dark"] .table {
  color: var(--text-color);
}

[data-theme="dark"] .card-header {
  background-color: rgba(33, 37, 41, 0.9);
  border-color: var(--border-color);
}

[data-theme="dark"] .card-body {
  color: var(--text-color);
}

[data-theme="dark"] .card span,
[data-theme="dark"] .card a:not(.btn) {
  color: var(--text-color);
}

[data-theme="dark"] .progress {
  background-color: rgba(255, 255, 255, 0.1);
}

/* GST Summary section */
.d-flex.justify-content-between span {
  color: var(--text-color);
}

.d-flex.justify-content-between .h5 {
  color: var(--text-color);
  font-weight: 600;
}

[data-theme="dark"] .progress-bar {
  background-color: var(--primary-color);
}

[data-theme="dark"] .progress-bar.bg-warning {
  background-color: var(--warning-color) !important;
}

/* Layout */
.wrapper {
  display: flex;
  min-height: 100vh;
}

/* Sidebar */
.sidebar {
  width: var(--sidebar-width);
  height: 100vh;
  position: fixed;
  left: 0;
  top: 0;
  background: var(--primary-color);
  color: var(--text-light);
  transition: var(--transition);
  z-index: 1000;
  box-shadow: var(--shadow);
  overflow-y: auto;
}

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

.sidebar-header {
  padding: 1.5rem 1rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.sidebar-logo {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text-light);
  text-decoration: none;
  display: flex;
  align-items: center;
}

/* Logo styling */
.sidebar-logo-img {
  margin-right: 0.5rem;
  border-radius: 6px;
}

.mobile-logo {
  max-height: 35px;
  width: auto;
}

.footer-brand-logo {
  max-height: 50px;
  width: auto;
}

/* Larger footer logo */
.footer-logo-large {
  max-height: 70px !important;
  max-width: 350px;
  width: auto;
}

/* Responsive footer logo */
@media (max-width: 992px) {
  .footer-logo-large {
    max-height: 60px !important;
    max-width: 300px;
  }
}

@media (max-width: 576px) {
  .footer-logo-large {
    max-height: 50px !important;
    max-width: 250px;
  }
}

.login-logo {
  margin-bottom: 1rem;
}

.logo-main {
  max-height: 50px;
  width: auto;
  transition: all 0.3s ease;
}

.logo-main:hover {
  transform: scale(1.05);
}

/* Responsive logo adjustments */
@media (max-width: 768px) {
  .logo-main {
    max-height: 35px;
  }
  
  .footer-brand-logo {
    max-height: 35px;
  }
}

.sidebar-logo i {
  margin-right: 0.5rem;
}

.sidebar-toggle {
  background: transparent;
  border: none;
  color: var(--text-light);
  cursor: pointer;
  font-size: 1.2rem;
}

.sidebar-menu {
  padding: 1rem 0;
  list-style: none;
  margin: 0;
}

.sidebar-item {
  margin-bottom: 0.25rem;
}

.sidebar-link {
  display: flex;
  align-items: center;
  padding: 0.75rem 1rem;
  color: rgba(255, 255, 255, 0.8);
  text-decoration: none;
  transition: var(--transition);
  border-left: 3px solid transparent;
}

.sidebar-link:hover, .sidebar-link.active {
  background: rgba(255, 255, 255, 0.1);
  color: var(--text-light);
  border-left-color: var(--accent-color);
}

.sidebar-link i {
  margin-right: 0.75rem;
  font-size: 1.1rem;
  width: 20px;
  text-align: center;
}

.sidebar-dropdown {
  padding-left: 1rem;
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease;
}

.sidebar-dropdown.show {
  max-height: 1000px;
}

.sidebar-dropdown .sidebar-link {
  padding: 0.5rem 1rem;
}

.sidebar-dropdown .sidebar-link i {
  font-size: 0.9rem;
}

/* Main Content */
.main-content {
  flex: 1;
  margin-left: var(--sidebar-width);
  padding: 1rem;
  transition: var(--transition);
}

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

/* Header */
.header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 0;
  margin-bottom: 1.5rem;
  border-bottom: 1px solid var(--border-color);
}

.header-title {
  font-size: 1.5rem;
  font-weight: 600;
  margin: 0;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 1rem;
}

/* Cards */
.card {
  background: #fff;
  border-radius: var(--border-radius);
  box-shadow: var(--shadow);
  border: none;
  margin-bottom: 1.5rem;
  transition: var(--transition);
}

.card-header {
  padding: 1rem 1.5rem;
  border-bottom: 1px solid var(--border-color);
  background: transparent;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.card-header h5 {
  color: var(--text-color);
  margin: 0;
}

.card-body {
  padding: 1.5rem;
  color: var(--text-color);
}

/* Dashboard Stats */
.stats-card {
  padding: 1.5rem;
  border-radius: var(--border-radius);
  background: var(--primary-color);
  box-shadow: var(--shadow);
  transition: var(--transition);
}

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

.stats-card .stats-change {
  color: rgba(255, 255, 255, 0.8);
  font-size: 0.8rem;
  margin-top: 0.5rem;
}

.stats-card h5 {
  color: #fff;
  font-size: 0.9rem;
  font-weight: 500;
  margin-bottom: 0.5rem;
}

.stats-card h3 {
  font-size: 1.8rem;
  font-weight: 600;
  margin: 0;
  color: #fff;
}

.stats-card.primary {
  border-left: 4px solid var(--primary-color);
}

.stats-card.secondary {
  border-left: 4px solid var(--secondary-color);
}

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

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

/* Tables */
.table {
  width: 100%;
  margin-bottom: 1rem;
  color: var(--text-color);
  border-collapse: collapse;
}

.table th {
  padding: 0.75rem;
  vertical-align: top;
  border-top: 1px solid var(--border-color);
  font-weight: 600;
  background-color: rgba(0, 0, 0, 0.03);
}

.table td {
  padding: 0.75rem;
  vertical-align: top;
  border-top: 1px solid var(--border-color);
}

.table-striped tbody tr:nth-of-type(odd) {
  background-color: rgba(0, 0, 0, 0.02);
}

.table-hover tbody tr:hover {
  background-color: rgba(0, 0, 0, 0.04);
}

/* Forms */
.form-control {
  display: block;
  width: 100%;
  padding: 0.375rem 0.75rem;
  font-size: 1rem;
  font-weight: 400;
  line-height: 1.5;
  color: var(--text-color);
  background-color: #fff;
  background-clip: padding-box;
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius);
  transition: var(--transition);
}

.form-control:focus {
  color: var(--text-color);
  background-color: #fff;
  border-color: var(--secondary-color);
  outline: 0;
  box-shadow: 0 0 0 0.25rem rgba(14, 165, 233, 0.25);
}

/* Buttons */
.btn {
  display: inline-block;
  font-weight: 400;
  text-align: center;
  white-space: nowrap;
  vertical-align: middle;
  user-select: none;
  border: 1px solid transparent;
  padding: 0.375rem 0.75rem;
  font-size: 1rem;
  line-height: 1.5;
  border-radius: var(--border-radius);
  transition: var(--transition);
  cursor: pointer;
}

.btn-primary {
  color: #fff;
  background-color: var(--primary-color);
  border-color: var(--primary-color);
}

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

.btn-secondary {
  color: #fff;
  background-color: var(--secondary-color);
  border-color: var(--secondary-color);
}

.btn-success {
  color: #fff;
  background-color: var(--accent-color);
  border-color: var(--accent-color);
}

.btn-warning {
  color: #fff;
  background-color: var(--warning-color);
  border-color: var(--warning-color);
}

/* Dark Mode Toggle */
.theme-toggle {
  background: transparent;
  border: none;
  color: var(--text-color);
  font-size: 1.2rem;
  cursor: pointer;
  padding: 0.5rem;
  border-radius: 50%;
  transition: var(--transition);
}

.theme-toggle:hover {
  background: rgba(0, 0, 0, 0.1);
}

/* Responsive */
@media (max-width: 992px) {
  .sidebar {
    width: var(--sidebar-collapsed-width);
    transform: translateX(-100%);
  }
  
  .sidebar.show {
    transform: translateX(0);
    width: var(--sidebar-width);
  }
  
  .main-content {
    margin-left: 0;
  }
  
  .main-content.expanded {
    margin-left: 0;
  }
}

/* Utilities */
.d-flex {
  display: flex;
}

.align-items-center {
  align-items: center;
}

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

.mb-0 {
  margin-bottom: 0;
}

.mb-1 {
  margin-bottom: 0.25rem;
}

.mb-2 {
  margin-bottom: 0.5rem;
}

.mb-3 {
  margin-bottom: 1rem;
}

.mb-4 {
  margin-bottom: 1.5rem;
}

.mt-0 {
  margin-top: 0;
}

.mt-1 {
  margin-top: 0.25rem;
}

.mt-2 {
  margin-top: 0.5rem;
}

.mt-3 {
  margin-top: 1rem;
}

.mt-4 {
  margin-top: 1.5rem;
}

.p-0 {
  padding: 0;
}

.p-1 {
  padding: 0.25rem;
}

.p-2 {
  padding: 0.5rem;
}

.p-3 {
  padding: 1rem;
}

.p-4 {
  padding: 1.5rem;
}

/* Animation */
.fade {
  transition: opacity 0.15s linear;
}

.fade:not(.show) {
  opacity: 0;
}

.collapse:not(.show) {
  display: none;
}

.collapsing {
  height: 0;
  overflow: hidden;
  transition: height 0.35s ease;
}