/* 
 * Skysys Engineering ERP - CSS Design System & Layout Engine
 * Premium modern SaaS aesthetic with light/dark theme variables.
 */

/* ==========================================================================
   1. CORE THEMES & CUSTOM PROPERTIES
   ========================================================================== */
:root {
  /* Common Core Tokens */
  --font-family: 'Plus Jakarta Sans', system-ui, -apple-system, sans-serif;
  --sidebar-width: 280px;
  --header-height: 70px;
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-full: 9999px;
  --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-normal: 250ms cubic-bezier(0.4, 0, 0.2, 1);

  /* Light Theme Color Swatch (Default) */
  --bg-primary: hsl(210, 20%, 97%);
  --bg-secondary: hsl(0, 0%, 100%);
  --text-primary: hsl(217, 30%, 15%);
  --text-secondary: hsl(215, 16%, 47%);
  --border-color: hsl(214, 32%, 91%);
  
  --accent-primary: hsl(221, 83%, 53%);
  --accent-hover: hsl(221, 83%, 45%);
  --accent-bg: hsl(221, 83%, 95%);
  
  --emerald-primary: hsl(142, 72%, 29%);
  --emerald-bg: hsl(142, 72%, 93%);
  
  --rose-primary: hsl(350, 89%, 43%);
  --rose-bg: hsl(350, 89%, 95%);
  
  --amber-primary: hsl(38, 92%, 35%);
  --amber-bg: hsl(38, 92%, 93%);

  --indigo-primary: hsl(250, 80%, 55%);
  --indigo-bg: hsl(250, 80%, 95%);
  
  --card-bg: hsl(0, 0%, 100%);
  --card-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.05), 0 2px 4px -1px rgba(0, 0, 0, 0.03);
  --modal-overlay-bg: rgba(15, 23, 42, 0.6);
}

[data-theme="dark"] {
  /* Dark Theme Color Swatch */
  --bg-primary: hsl(222, 47%, 9%);
  --bg-secondary: hsl(223, 47%, 5%);
  --text-primary: hsl(210, 40%, 98%);
  --text-secondary: hsl(215, 20%, 65%);
  --border-color: hsl(217, 30%, 17%);
  
  --accent-primary: hsl(217, 91%, 60%);
  --accent-hover: hsl(217, 91%, 50%);
  --accent-bg: rgba(59, 130, 246, 0.12);
  
  --emerald-primary: hsl(142, 70%, 48%);
  --emerald-bg: rgba(16, 185, 129, 0.12);
  
  --rose-primary: hsl(350, 89%, 60%);
  --rose-bg: rgba(244, 63, 94, 0.12);
  
  --amber-primary: hsl(38, 92%, 58%);
  --amber-bg: rgba(245, 158, 11, 0.12);

  --indigo-primary: hsl(250, 85%, 65%);
  --indigo-bg: rgba(139, 92, 246, 0.12);
  
  --card-bg: hsl(222, 47%, 13%);
  --card-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.3), 0 4px 6px -2px rgba(0, 0, 0, 0.2);
  --modal-overlay-bg: rgba(2, 6, 23, 0.85);
}

/* ==========================================================================
   2. INITIAL SETTINGS & BASE RESET
   ========================================================================== */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html, body {
  font-family: var(--font-family);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
  transition: background-color var(--transition-normal), color var(--transition-normal);
}

a {
  text-decoration: none;
  color: inherit;
}

ul {
  list-style: none;
}

button, input, select, textarea {
  font-family: inherit;
  font-size: inherit;
  color: inherit;
  background: none;
  border: none;
  outline: none;
}

/* ==========================================================================
   3. WORKSPACE CONTAINER LAYOUT
   ========================================================================== */
.erp-container {
  display: flex;
  min-height: 100vh;
}

/* Sidebar Drawer Style */
.erp-sidebar {
  width: var(--sidebar-width);
  background-color: var(--bg-secondary);
  border-right: 1px solid var(--border-color);
  display: flex;
  flex-direction: column;
  position: fixed;
  top: 0;
  bottom: 0;
  left: 0;
  z-index: 50;
  transition: transform var(--transition-normal), background-color var(--transition-normal), border-color var(--transition-normal);
}

.sidebar-header {
  height: var(--header-height);
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--border-color);
}

.logo-area {
  display: flex;
  align-items: center;
  gap: 12px;
}

.logo-icon {
  width: 32px;
  height: 32px;
  color: var(--accent-primary);
  filter: drop-shadow(0 2px 4px var(--accent-bg));
  transition: transform var(--transition-normal);
}

.brand-logo-img {
  height: 32px;
  width: auto;
  max-width: 120px;
  object-fit: contain;
}

.logo-area:hover .logo-icon {
  transform: rotate(15deg);
}

.logo-text {
  display: flex;
  flex-direction: column;
}

.brand-name {
  font-size: 19px;
  font-weight: 800;
  letter-spacing: -0.5px;
  color: var(--text-primary);
}

.brand-sub {
  font-size: 9px;
  font-weight: 700;
  letter-spacing: 2.5px;
  color: var(--text-secondary);
}

.mobile-close-btn {
  display: none;
  color: var(--text-secondary);
  cursor: pointer;
}

.sidebar-nav {
  flex: 1;
  padding: 24px 16px;
  overflow-y: auto;
}

.sidebar-nav ul {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.nav-link {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 12px 16px;
  border-radius: var(--radius-md);
  font-size: 14px;
  font-weight: 500;
  color: var(--text-secondary);
  transition: all var(--transition-fast);
  cursor: pointer;
}

.nav-link:hover {
  background-color: var(--bg-primary);
  color: var(--text-primary);
}

.nav-link.active {
  background-color: var(--accent-bg);
  color: var(--accent-primary);
  font-weight: 600;
}

.nav-icon {
  width: 20px;
  height: 20px;
  stroke-width: 2px;
}

/* Sidebar Footer Panel */
.sidebar-footer {
  padding: 20px 16px;
  border-top: 1px solid var(--border-color);
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.theme-toggle-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  width: 100%;
  padding: 10px;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  font-size: 13px;
  font-weight: 600;
  color: var(--text-secondary);
  cursor: pointer;
  background-color: var(--bg-primary);
  transition: all var(--transition-fast);
}

.theme-toggle-btn:hover {
  color: var(--text-primary);
  border-color: var(--text-secondary);
}

.theme-toggle-btn svg {
  width: 16px;
  height: 16px;
}

.user-profile-pill {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 12px;
  background-color: var(--bg-primary);
  border-radius: var(--radius-md);
}

.user-profile-pill .avatar {
  width: 36px;
  height: 36px;
  background: linear-gradient(135deg, var(--accent-primary), var(--indigo-primary));
  color: #fff;
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 13px;
}

.user-info {
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.user-name {
  font-size: 13px;
  font-weight: 600;
  color: var(--text-primary);
  white-space: nowrap;
  text-overflow: ellipsis;
  overflow: hidden;
}

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

/* Main Content Panel */
.erp-main {
  flex: 1;
  margin-left: var(--sidebar-width);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  transition: margin-left var(--transition-normal);
}

/* ==========================================================================
   4. TOP BAR & BREADCRUMBS
   ========================================================================== */
.erp-header {
  height: var(--header-height);
  background-color: var(--bg-secondary);
  border-bottom: 1px solid var(--border-color);
  padding: 0 32px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  position: sticky;
  top: 0;
  z-index: 40;
  transition: all var(--transition-normal);
}

.header-left {
  display: flex;
  align-items: center;
  gap: 16px;
}

.mobile-menu-btn {
  display: none;
  color: var(--text-primary);
  cursor: pointer;
}

.breadcrumb-container {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
}

.bc-parent {
  color: var(--text-secondary);
  font-weight: 500;
}

.bc-separator {
  color: var(--border-color);
  font-size: 12px;
}

.bc-active {
  color: var(--text-primary);
  font-weight: 600;
}

.header-right {
  display: flex;
  align-items: center;
  gap: 20px;
}

.quick-stats-mini {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 12px;
  font-weight: 600;
  color: var(--text-secondary);
  background-color: var(--bg-primary);
  padding: 6px 12px;
  border-radius: var(--radius-full);
}

.dot-online {
  width: 8px;
  height: 8px;
  background-color: var(--emerald-primary);
  border-radius: var(--radius-full);
  display: inline-block;
  box-shadow: 0 0 0 3px var(--emerald-bg);
  animation: pulse-dot 1.8s infinite ease-in-out;
}

@keyframes pulse-dot {
  0% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.4); }
  70% { transform: scale(1); box-shadow: 0 0 0 6px rgba(16, 185, 129, 0); }
  100% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(16, 185, 129, 0); }
}

.notification-bell {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-secondary);
  cursor: pointer;
  position: relative;
  transition: all var(--transition-fast);
}

.notification-bell:hover {
  color: var(--text-primary);
  border-color: var(--text-secondary);
  background-color: var(--bg-primary);
}

.notification-bell svg {
  width: 20px;
  height: 20px;
}

.notif-badge {
  position: absolute;
  top: -4px;
  right: -4px;
  width: 18px;
  height: 18px;
  background-color: var(--rose-primary);
  color: #fff;
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 10px;
  font-weight: 700;
  border: 2px solid var(--bg-secondary);
}

/* ==========================================================================
   5. UTILITIES, BADGES & BUTTONS
   ========================================================================== */
.badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 4px 10px;
  border-radius: var(--radius-full);
  font-size: 12px;
  font-weight: 600;
  text-transform: capitalize;
}

.badge-accent { background-color: var(--accent-bg); color: var(--accent-primary); }
.badge-emerald { background-color: var(--emerald-bg); color: var(--emerald-primary); }
.badge-rose { background-color: var(--rose-bg); color: var(--rose-primary); }
.badge-amber { background-color: var(--amber-bg); color: var(--amber-primary); }
.badge-indigo { background-color: var(--indigo-bg); color: var(--indigo-primary); }

.trend {
  display: inline-flex;
  align-items: center;
  gap: 3px;
  font-size: 12px;
  font-weight: 700;
  border-radius: var(--radius-full);
  padding: 2px 8px;
}
.trend-up { background-color: var(--emerald-bg); color: var(--emerald-primary); }
.trend-down { background-color: var(--rose-bg); color: var(--rose-primary); }
.trend-neutral { background-color: var(--accent-bg); color: var(--accent-primary); }

/* Buttons styling */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 18px;
  border-radius: var(--radius-md);
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.btn-sm {
  padding: 6px 12px;
  font-size: 12px;
}

.btn-primary { background-color: var(--accent-primary); color: #fff; }
.btn-primary:hover { background-color: var(--accent-hover); transform: translateY(-1px); }

.btn-emerald { background-color: var(--emerald-primary); color: #fff; }
.btn-emerald:hover { background-color: hsl(142, 72%, 24%); transform: translateY(-1px); }

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

.btn-text-link {
  font-size: 13px;
  font-weight: 600;
  color: var(--accent-primary);
  cursor: pointer;
  transition: color var(--transition-fast);
}
.btn-text-link:hover {
  color: var(--accent-hover);
  text-decoration: underline;
}

.btn-group {
  display: flex;
  gap: 10px;
}

/* ==========================================================================
   6. PAGE-SPECIFIC STRUCTURE & CONTENT AREAS
   ========================================================================== */
.tab-content {
  display: none;
  padding: 32px;
  animation: fade-in-tab var(--transition-normal);
}

.tab-content.active {
  display: block;
}

@keyframes fade-in-tab {
  from { opacity: 0; transform: translateY(5px); }
  to { opacity: 1; transform: translateY(0); }
}

.section-title-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 24px;
}

.section-title-bar h1 {
  font-size: 26px;
  font-weight: 800;
  letter-spacing: -0.5px;
  margin-bottom: 4px;
}

.section-title-bar p {
  color: var(--text-secondary);
  font-size: 14px;
}

/* Welcome Hero Box */
.welcome-banner {
  background: linear-gradient(135deg, var(--bg-secondary), var(--bg-primary));
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 24px 32px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 20px;
  margin-bottom: 32px;
  box-shadow: var(--card-shadow);
}

.welcome-text h1 {
  font-size: 22px;
  font-weight: 700;
  letter-spacing: -0.5px;
  margin-bottom: 4px;
}

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

.quick-actions-bar {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

/* Metric Cards Grid */
.metrics-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 24px;
  margin-bottom: 32px;
}

.metric-card {
  background-color: var(--card-bg);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 24px;
  box-shadow: var(--card-shadow);
  display: flex;
  flex-direction: column;
  gap: 14px;
  transition: transform var(--transition-fast), border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.metric-card:hover {
  transform: translateY(-2px);
  border-color: var(--text-secondary);
  box-shadow: 0 12px 20px -5px rgba(0, 0, 0, 0.08);
}

.metric-card .card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.metric-card .card-title {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-secondary);
}

.icon-wrapper {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
}

.icon-emerald { background-color: var(--emerald-bg); color: var(--emerald-primary); }
.icon-rose { background-color: var(--rose-bg); color: var(--rose-primary); }
.icon-indigo { background-color: var(--indigo-bg); color: var(--indigo-primary); }
.icon-amber { background-color: var(--amber-bg); color: var(--amber-primary); }

.metric-card .card-value {
  font-size: 30px;
  font-weight: 800;
  letter-spacing: -1px;
}

.metric-card .card-footer {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 12px;
}

.metric-card .footer-text {
  color: var(--text-secondary);
}

/* Charts Grid Layout */
.charts-grid {
  display: grid;
  grid-template-columns: 2fr 1.2fr;
  gap: 24px;
  margin-bottom: 32px;
}

@media (max-width: 1024px) {
  .charts-grid {
    grid-template-columns: 1fr;
  }
}

.chart-card {
  background-color: var(--card-bg);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 24px;
  box-shadow: var(--card-shadow);
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.chart-header h3 {
  font-size: 16px;
  font-weight: 700;
}

.chart-header p {
  font-size: 12px;
  color: var(--text-secondary);
  margin-top: 2px;
}

.chart-wrapper {
  position: relative;
  height: 300px;
  width: 100%;
}

.doughnut-wrapper {
  display: flex;
  justify-content: center;
  align-items: center;
}

/* Dashboard Bottom Secondary Lists */
.dashboard-secondary-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}

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

.activity-card {
  background-color: var(--card-bg);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 24px;
  box-shadow: var(--card-shadow);
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.card-section-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--border-color);
  padding-bottom: 12px;
}

.card-section-header h3 {
  font-size: 16px;
  font-weight: 700;
}

.follow-up-list, .defaulter-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
  max-height: 280px;
  overflow-y: auto;
}

.follow-up-item, .defaulter-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 14px;
  background-color: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  font-size: 13px;
  transition: all var(--transition-fast);
}

.follow-up-item:hover, .defaulter-item:hover {
  border-color: var(--text-secondary);
}

.item-left {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.item-title {
  font-weight: 600;
}

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

.item-right {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 4px;
}

.item-date {
  font-size: 11px;
  font-weight: 500;
  color: var(--text-secondary);
}

/* ==========================================================================
   7. ADVANCED TABLE STYLING
   ========================================================================== */
.table-controls {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  margin-bottom: 20px;
  flex-wrap: wrap;
}

.search-input-wrapper {
  position: relative;
  flex: 1;
  max-width: 400px;
  min-width: 250px;
}

.search-icon {
  position: absolute;
  left: 14px;
  top: 50%;
  transform: translateY(-50%);
  width: 18px;
  height: 18px;
  color: var(--text-secondary);
  pointer-events: none;
}

.search-input-wrapper input {
  width: 100%;
  padding: 12px 16px 12px 42px;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  background-color: var(--bg-secondary);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.search-input-wrapper input:focus {
  border-color: var(--accent-primary);
  box-shadow: 0 0 0 3px var(--accent-bg);
}

.filter-group {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.filter-group select {
  padding: 12px 16px;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  background-color: var(--bg-secondary);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.filter-group select:hover {
  border-color: var(--text-secondary);
}

.table-container {
  background-color: var(--card-bg);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  box-shadow: var(--card-shadow);
  overflow-x: auto;
  margin-bottom: 20px;
}

.erp-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: 14px;
}

.erp-table th, .erp-table td {
  padding: 16px 20px;
  border-bottom: 1px solid var(--border-color);
}

.erp-table th {
  background-color: var(--bg-primary);
  font-weight: 600;
  color: var(--text-secondary);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.erp-table tbody tr {
  transition: background-color var(--transition-fast);
}

.erp-table tbody tr:hover {
  background-color: var(--bg-primary);
}

/* Sorted Column Header styles */
.sortable {
  cursor: pointer;
  user-select: none;
}

.sortable:hover {
  color: var(--text-primary) !important;
}

.sort-indicator {
  display: inline-block;
  margin-left: 4px;
  font-size: 10px;
  opacity: 0.6;
}

.sortable.asc .sort-indicator::after {
  content: ' ▲';
}

.sortable.desc .sort-indicator::after {
  content: ' ▼';
}

/* Action Dropdown / Button items */
.table-action-btn-row {
  display: flex;
  gap: 6px;
}

.btn-icon-only {
  width: 32px;
  height: 32px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--border-color);
  cursor: pointer;
  color: var(--text-secondary);
  transition: all var(--transition-fast);
}

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

.btn-icon-only svg {
  width: 14px;
  height: 14px;
}

/* Dynamic Pagination Control */
.table-pagination {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: 16px;
}

.pagination-info {
  font-size: 13px;
  color: var(--text-secondary);
}

.pagination-buttons {
  display: flex;
  gap: 8px;
}

/* ==========================================================================
   8. DYNAMIC TRANSACTION BOARD
   ========================================================================== */
.finance-summary-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 24px;
  margin-bottom: 32px;
}

.fin-sum-card {
  padding: 24px;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-color);
  box-shadow: var(--card-shadow);
  background-color: var(--card-bg);
}

.fin-sum-label {
  font-size: 13px;
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: 8px;
}

.fin-sum-value {
  font-size: 26px;
  font-weight: 800;
  letter-spacing: -0.5px;
}

.card-income { border-left: 6px solid var(--emerald-primary); }
.card-income .fin-sum-value { color: var(--emerald-primary); }

.card-expense { border-left: 6px solid var(--rose-primary); }
.card-expense .fin-sum-value { color: var(--rose-primary); }

.card-net { border-left: 6px solid var(--accent-primary); }
.card-net .fin-sum-value { color: var(--accent-primary); }

/* ==========================================================================
   9. INTERACTIVE ACTION MODALS
   ========================================================================== */
.modal-overlay {
  position: fixed;
  top: 0;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background-color: var(--modal-overlay-bg);
  backdrop-filter: blur(4px);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition-normal);
}

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

.modal-card {
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.2), 0 10px 10px -5px rgba(0, 0, 0, 0.1);
  width: 100%;
  max-width: 600px;
  max-height: 90vh;
  display: flex;
  flex-direction: column;
  transform: translateY(20px);
  transition: transform var(--transition-normal);
  overflow: hidden;
}

.modal-overlay.open .modal-card {
  transform: translateY(0);
}

.modal-sm {
  max-width: 420px;
}

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

.modal-header {
  padding: 20px 24px;
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.modal-header h2 {
  font-size: 18px;
  font-weight: 700;
}

.close-modal-btn {
  font-size: 24px;
  color: var(--text-secondary);
  cursor: pointer;
  line-height: 1;
}

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

.modal-card form {
  padding: 24px;
  overflow-y: auto;
  flex: 1;
  min-height: 0;
}

.form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px 20px;
  margin-bottom: 24px;
}

.span-2 {
  grid-column: span 2;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.form-group label {
  font-size: 13px;
  font-weight: 600;
  color: var(--text-secondary);
}

.form-group label.required::after {
  content: ' *';
  color: var(--rose-primary);
}

.form-group input, .form-group select, .form-group textarea {
  padding: 10px 14px;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  background-color: var(--bg-primary);
  width: 100%;
  transition: border-color var(--transition-fast);
}

.form-group input:focus, .form-group select:focus, .form-group textarea:focus {
  border-color: var(--accent-primary);
  background-color: var(--bg-secondary);
}

/* Static View item in modal */
.form-group-static {
  display: flex;
  flex-direction: column;
  gap: 4px;
  margin-bottom: 16px;
}

.form-group-static label {
  font-size: 12px;
  font-weight: 600;
  color: var(--text-secondary);
}

.static-val {
  font-size: 15px;
  font-weight: 700;
  padding: 8px 0;
}

.highlight-rose {
  color: var(--rose-primary);
}

.modal-footer {
  padding-top: 16px;
  border-top: 1px solid var(--border-color);
  display: flex;
  justify-content: flex-end;
  gap: 12px;
}

/* ==========================================================================
   10. HIGH-FIDELITY PRINTABLE INVOICE / RECEIPT
   ========================================================================== */
.invoice-container {
  padding: 30px 40px;
  background-color: #fff;
  color: #1e293b;
  font-size: 14px;
  line-height: 1.5;
  overflow-y: auto;
  flex: 1;
  min-height: 0;
}

#modal-invoice .modal-card {
  max-height: 92vh;
  display: flex;
  flex-direction: column;
}

.invoice-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  border-bottom: 2px solid #e2e8f0;
  padding-bottom: 24px;
  margin-bottom: 24px;
}

.invoice-logo-area {
  display: flex;
  align-items: center;
  gap: 10px;
}

.invoice-logo-icon {
  width: 38px;
  height: 38px;
  color: #2563eb;
}

.invoice-logo-img {
  height: 38px;
  width: auto;
  max-width: 150px;
  object-fit: contain;
}

.invoice-logo-text {
  display: flex;
  flex-direction: column;
}

.inv-brand-name {
  font-size: 22px;
  font-weight: 800;
  letter-spacing: -0.5px;
  color: #0f172a;
}

.inv-brand-sub {
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 2px;
  color: #64748b;
}

.invoice-meta {
  text-align: right;
}

.invoice-meta h1 {
  font-size: 24px;
  font-weight: 800;
  color: #2563eb;
  margin-bottom: 4px;
}

.invoice-meta p {
  color: #64748b;
  font-size: 12px;
}

.invoice-address-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  margin-bottom: 32px;
}

.address-block h4 {
  font-size: 12px;
  text-transform: uppercase;
  color: #64748b;
  letter-spacing: 0.5px;
  margin-bottom: 8px;
  font-weight: 600;
}

.address-block p {
  font-weight: 500;
}

.address-block .comp-addr {
  color: #475569;
  font-size: 12px;
  margin-top: 4px;
}

/* Invoice details table */
.invoice-table {
  width: 100%;
  border-collapse: collapse;
  margin-bottom: 24px;
}

.invoice-table th, .invoice-table td {
  padding: 12px 16px;
  border-bottom: 1px solid #e2e8f0;
}

.invoice-table th {
  background-color: #f8fafc;
  color: #475569;
  font-weight: 600;
  text-align: left;
  font-size: 12px;
  text-transform: uppercase;
}

.invoice-totals {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 8px;
  margin-bottom: 32px;
}

.totals-row {
  display: flex;
  width: 250px;
  justify-content: space-between;
  font-size: 13px;
  color: #475569;
}

.totals-row.grand-total {
  font-size: 16px;
  font-weight: 800;
  color: #0f172a;
  border-top: 2px solid #e2e8f0;
  padding-top: 8px;
  margin-top: 4px;
}

.totals-row.outstanding-row {
  color: #e11d48;
  font-weight: 600;
}

.invoice-notes {
  border-top: 1px solid #e2e8f0;
  padding-top: 16px;
  font-size: 12px;
  color: #64748b;
}

.invoice-header-actions {
  display: flex;
  gap: 10px;
}

/* ==========================================================================
   11. PRINT SPECIFIC CONTROLS & MEDIA
   ========================================================================== */
@media print {
  /* 1. Hide the entire application UI, header, sidebar, other modals, and toast alerts */
  .erp-container,
  .modal-overlay:not(#modal-invoice),
  .toast-notification,
  .hide-on-print {
    display: none !important;
  }
  
  /* 2. Style the invoice modal overlay as a normal, visible page block */
  .modal-overlay#modal-invoice {
    position: absolute !important;
    left: 0 !important;
    top: 0 !important;
    width: 100% !important;
    height: auto !important;
    display: block !important;
    opacity: 1 !important;
    pointer-events: auto !important;
    background: #ffffff !important;
    backdrop-filter: none !important;
    padding: 0 !important;
    margin: 0 !important;
    z-index: auto !important;
  }
  
  /* 3. Collapse modal card formatting to print standard margins */
  .modal-card {
    transform: none !important;
    max-width: 100% !important;
    width: 100% !important;
    margin: 0 !important;
    border: none !important;
    box-shadow: none !important;
    background: #ffffff !important;
    overflow: visible !important;
  }
  
  /* 4. Optimize printable layout containers */
  .invoice-container {
    padding: 0 !important;
    margin: 0 !important;
    border: none !important;
    box-shadow: none !important;
    background-color: #ffffff !important;
    color: #000000 !important;
  }

  /* 5. Set margins and prevent page breaking inside receipt items */
  @page {
    size: auto;
    margin: 15mm 15mm 15mm 15mm;
  }

  .invoice-table, .invoice-totals, .invoice-notes {
    page-break-inside: avoid;
  }
}

/* ==========================================================================
   12. NOTIFICATION TOAST POPUP
   ========================================================================== */
.toast-notification {
  position: fixed;
  bottom: 24px;
  right: 24px;
  background-color: #0f172a;
  color: #fff;
  padding: 12px 24px;
  border-radius: var(--radius-md);
  box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.3);
  font-size: 13px;
  font-weight: 600;
  z-index: 200;
  opacity: 0;
  transform: translateY(20px);
  pointer-events: none;
  transition: opacity var(--transition-normal), transform var(--transition-normal);
  display: flex;
  align-items: center;
  gap: 10px;
}

.toast-notification.show {
  opacity: 1;
  transform: translateY(0);
}

.toast-success { border-left: 4px solid var(--emerald-primary); }
.toast-error { border-left: 4px solid var(--rose-primary); }
.toast-warning { border-left: 4px solid var(--amber-primary); }

/* ==========================================================================
   13. RESPONSIVE MEDIA QUERIES (MOBILE/TABLET COLLAPSE)
   ========================================================================== */
@media (max-width: 768px) {
  /* Header adjustments */
  .erp-header {
    padding: 0 16px;
  }
  
  .mobile-menu-btn {
    display: block;
  }
  
  .breadcrumb-container {
    font-size: 12px;
  }
  
  /* Sidebar collapsing logic */
  .erp-sidebar {
    transform: translateX(-100%);
  }
  
  .erp-sidebar.mobile-open {
    transform: translateX(0);
  }
  
  .mobile-close-btn {
    display: block;
  }
  
  .erp-main {
    margin-left: 0;
  }
  
  /* Main grid sections */
  .tab-content {
    padding: 16px;
  }
  
  .welcome-banner {
    padding: 16px;
  }
  
  .section-title-bar {
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
  }
  
  .section-title-bar .btn-group, .section-title-bar .btn {
    width: 100%;
  }
  
  .table-controls {
    flex-direction: column;
    align-items: stretch;
  }
  
  .search-input-wrapper {
    max-width: 100%;
  }
  
  .filter-group select {
    flex: 1;
  }
  
  /* Modal responsive adjustments */
  .form-grid {
    grid-template-columns: 1fr;
  }
  
  .span-2 {
    grid-column: span 1;
  }
  
  .invoice-container {
    padding: 16px;
  }
  
  .invoice-address-grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }
  
  .invoice-totals {
    align-items: stretch;
  }
  
  .totals-row {
    width: 100%;
  }
}

/* Dynamic Software Checkbox Grid & Multi-select */
.software-checkbox-grid {
  display: flex;
  flex-direction: column;
  gap: 8px;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 12px;
  max-height: 150px;
  overflow-y: auto;
  background-color: var(--bg-primary);
  box-shadow: inset 0 1px 2px rgba(0, 0, 0, 0.05);
}

.software-checkbox-item {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  padding: 4px;
  border-radius: var(--radius-sm);
  transition: background-color var(--transition-fast);
}

.software-checkbox-item:hover {
  background-color: var(--bg-secondary);
}

.software-checkbox-item input[type="checkbox"] {
  width: 16px;
  height: 16px;
  border-radius: var(--radius-sm);
  border: 1.5px solid var(--border-color);
  cursor: pointer;
  margin: 0;
  accent-color: var(--accent-primary);
}

.discount-input-row {
  display: flex;
  gap: 8px;
  width: 100%;
}

.discount-input-row select {
  width: 90px !important;
  flex-shrink: 0;
}

/* ==========================================================================
   14. BRAND NEW STUDENT PORTAL SPECIFIC STYLES
   ========================================================================== */
.portal-login-wrapper {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: var(--bg-secondary);
  padding: 20px;
  transition: background-color var(--transition-normal);
}

.portal-login-card {
  width: 100%;
  max-width: 450px;
  background-color: var(--card-bg);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 40px 32px;
  box-shadow: var(--card-shadow);
  text-align: center;
  transition: background-color var(--transition-normal), border-color var(--transition-normal);
}

.portal-logo-area {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 28px;
}

.portal-logo-icon {
  width: 45px;
  height: 45px;
  color: var(--accent-primary);
}

.portal-logo-text {
  text-align: left;
  display: flex;
  flex-direction: column;
}

.portal-brand-name {
  font-size: 24px;
  font-weight: 800;
  letter-spacing: -0.5px;
  color: var(--text-primary);
}

.portal-brand-sub {
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 2px;
  color: var(--text-secondary);
}

.portal-dashboard-wrapper {
  max-width: 1200px;
  margin: 0 auto;
  padding: 40px 24px;
}

.portal-header-bar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-bottom: 1px solid var(--border-color);
  padding-bottom: 20px;
  margin-bottom: 32px;
  flex-wrap: wrap;
  gap: 20px;
}

.portal-header-left h1 {
  font-size: 28px;
  font-weight: 800;
  letter-spacing: -0.5px;
  color: var(--text-primary);
}

.portal-header-left p {
  color: var(--text-secondary);
  font-size: 14px;
  margin-top: 4px;
}

.portal-header-actions {
  display: flex;
  gap: 12px;
}

.portal-main-grid {
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: 32px;
}

.portal-info-card {
  background-color: var(--card-bg);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 28px;
  box-shadow: var(--card-shadow);
  display: flex;
  flex-direction: column;
  gap: 24px;
  transition: background-color var(--transition-normal), border-color var(--transition-normal);
}

.portal-info-row {
  display: flex;
  flex-direction: column;
  gap: 6px;
  border-bottom: 1px solid var(--border-color);
  padding-bottom: 16px;
}

.portal-info-row:last-child {
  border-bottom: none;
  padding-bottom: 0;
}

.portal-info-label {
  font-size: 11px;
  font-weight: 700;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.8px;
}

.portal-info-val {
  font-size: 16px;
  font-weight: 700;
  color: var(--text-primary);
}

.portal-progress-bar-container {
  width: 100%;
  height: 8px;
  background-color: var(--bg-primary);
  border-radius: var(--radius-full);
  overflow: hidden;
  margin-top: 8px;
}

.portal-progress-bar-fill {
  height: 100%;
  background-color: var(--emerald-primary);
  transition: width var(--transition-normal);
}

.portal-section-card {
  background-color: var(--card-bg);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 28px;
  box-shadow: var(--card-shadow);
  margin-bottom: 32px;
  transition: background-color var(--transition-normal), border-color var(--transition-normal);
}

.portal-section-card:last-child {
  margin-bottom: 0;
}

.portal-section-title {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 20px;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: 8px;
}

.portal-welcome-alert {
  padding: 16px 20px;
  background-color: var(--accent-bg);
  border-left: 4px solid var(--accent-primary);
  border-radius: var(--radius-md);
  margin-bottom: 28px;
  font-size: 14px;
  line-height: 1.6;
  color: var(--text-primary);
}

.portal-support-card {
  background: linear-gradient(135deg, var(--card-bg), var(--bg-secondary));
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 24px;
  text-align: center;
  box-shadow: var(--card-shadow);
}

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

/* ==========================================================================
   21. PREMIUM GLASSMORPHIC LOGIN SCREEN
   ========================================================================== */
.login-wrapper {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: var(--bg-primary);
  background-image: radial-gradient(circle at 10% 20%, rgba(99, 102, 241, 0.15) 0%, transparent 40%),
                    radial-gradient(circle at 90% 80%, rgba(59, 130, 246, 0.15) 0%, transparent 40%);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 9999;
  overflow: hidden;
  transition: opacity 0.5s ease-out, transform 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

.login-bg-shapes {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  overflow: hidden;
  z-index: 1;
}

.login-bg-shapes .shape {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  opacity: 0.4;
  animation: floatShape 20s infinite alternate ease-in-out;
}

.login-bg-shapes .shape-1 {
  top: 20%;
  left: 20%;
  width: 300px;
  height: 300px;
  background: var(--indigo-primary);
}

.login-bg-shapes .shape-2 {
  bottom: 15%;
  right: 15%;
  width: 350px;
  height: 350px;
  background: var(--accent-primary);
  animation-delay: -5s;
}

.login-bg-shapes .shape-3 {
  top: 60%;
  left: 55%;
  width: 250px;
  height: 250px;
  background: var(--rose-primary);
  animation-delay: -10s;
}

@keyframes floatShape {
  0% {
    transform: translateY(0) scale(1);
  }
  100% {
    transform: translateY(-40px) scale(1.1);
  }
}

.login-card {
  width: 100%;
  max-width: 440px;
  margin: 20px;
  padding: 40px;
  background: var(--card-bg);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: var(--radius-lg);
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.15);
  z-index: 2;
  position: relative;
  text-align: left;
}

[data-theme="dark"] .login-card {
  background: rgba(15, 23, 42, 0.45);
  border: 1px solid rgba(255, 255, 255, 0.07);
  box-shadow: 0 25px 60px rgba(0, 0, 0, 0.4);
}

.login-header {
  text-align: center;
  margin-bottom: 32px;
}

.login-logo-title {
  font-family: 'Cinzel', 'Times New Roman', serif;
  font-size: 24px;
  font-weight: 800;
  color: var(--indigo-primary);
  letter-spacing: 2px;
  margin-bottom: 6px;
}

.login-logo-sub {
  font-size: 12.5px;
  font-weight: 600;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 1px;
}

/* Disable performance-heavy blurred animations on mobile screens to prevent flickering/freeze */
@media (max-width: 768px) {
  .login-bg-shapes {
    display: none !important;
  }
}

/* Logout Sidebar Button styling */
.logout-nav-item {
  margin-top: auto;
  border-top: 1px solid var(--border-color);
  padding: 16px 24px;
}
.logout-btn-sidebar {
  display: flex;
  align-items: center;
  gap: 12px;
  width: 100%;
  padding: 10px 16px;
  border-radius: var(--radius-sm);
  color: var(--rose-primary);
  font-weight: 700;
  font-size: 13.5px;
  cursor: pointer;
  transition: background var(--transition-fast);
}
.logout-btn-sidebar:hover {
  background: var(--rose-bg);
}

/* ==========================================================================
   20. PRINTABLE CERTIFICATE & MEDIA PRINT ADJUSTMENTS
   ========================================================================== */
.certificate-print-container {
  background: white;
  color: #1e293b;
  padding: 24px;
  border-radius: 8px;
  position: relative;
  overflow: hidden;
  box-shadow: 0 25px 50px -12px rgba(0,0,0,0.25);
  width: 100%;
  max-width: 1000px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
}
.certificate-border-outer {
  border: 12px double #1e3a8a;
  padding: 16px;
  border-radius: 4px;
  background: #fdfbf7;
  position: relative;
  box-shadow: inset 0 0 100px rgba(30, 58, 138, 0.08);
}
.certificate-border-inner {
  border: 2px solid #b49b72;
  padding: 24px 40px;
  border-radius: 2px;
  text-align: center;
  position: relative;
}
.cert-watermark-img {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  opacity: 0.05;
  width: 320px;
  height: auto;
  pointer-events: none;
  user-select: none;
  z-index: 1;
}
.cert-medal-graphic {
  margin: 0 auto 10px auto;
  width: 64px;
  height: 64px;
  background: linear-gradient(135deg, #d4af37 0%, #aa7c11 100%);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  box-shadow: 0 4px 12px rgba(170, 124, 17, 0.2);
}

@media print {
  @page {
    size: A4 landscape;
    margin: 0;
  }
  body.printing-certificate > *:not(#standalone-admin-certificate-print-area):not(#standalone-certificate-print-area) {
    display: none !important;
  }
  #standalone-admin-certificate-print-area {
    display: block !important;
    position: absolute !important;
    left: 0 !important;
    top: 0 !important;
    width: 297mm !important;
    height: 210mm !important;
    background: white !important;
    margin: 0 !important;
    padding: 0 !important;
    box-sizing: border-box !important;
    visibility: visible !important;
  }
  #standalone-admin-certificate-print-area * {
    visibility: visible !important;
  }
  #standalone-admin-certificate-print-area .certificate-print-container {
    width: 297mm !important;
    height: 210mm !important;
    max-width: 297mm !important;
    max-height: 210mm !important;
    padding: 0 !important;
    margin: 0 !important;
    border: none !important;
    box-shadow: none !important;
    box-sizing: border-box !important;
    display: flex !important;
    flex-direction: column !important;
    background: white !important;
  }
}