/* =====================================================
   RSC CHAIN - INSTITUTIONAL ADMIN PANEL
   Professional Financial Institution Admin System
   ===================================================== */

/* ===== VARIABLES ===== */
:root {
  /* Primary Colors - Financial Institution */
  --primary: #0066ff;
  --primary-dark: #0052cc;
  --primary-light: #3385ff;
  --secondary: #00d4ff;
  --accent: #00ff88;
  
  /* Status Colors */
  --success: #00c853;
  --warning: #ff9800;
  --danger: #f44336;
  --info: #2196f3;
  
  /* Backgrounds */
  --bg-primary: #0a0e27;
  --bg-secondary: #111827;
  --bg-tertiary: #1a1f3a;
  --bg-card: #1e2339;
  --bg-hover: #252b47;
  --bg-active: #2a3154;
  
  /* Text */
  --text-primary: #ffffff;
  --text-secondary: #b8c5d6;
  --text-muted: #6b7a95;
  --text-disabled: #4a5568;
  
  /* Borders */
  --border-color: rgba(255, 255, 255, 0.08);
  --border-hover: rgba(255, 255, 255, 0.15);
  --border-active: rgba(0, 102, 255, 0.3);
  
  /* Shadows */
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.5);
  --shadow-xl: 0 16px 64px rgba(0, 0, 0, 0.6);
  
  /* Layout */
  --sidebar-width: 280px;
  --sidebar-collapsed-width: 80px;
  --header-height: 70px;
  
  /* Spacing */
  --spacing-xs: 4px;
  --spacing-sm: 8px;
  --spacing-md: 16px;
  --spacing-lg: 24px;
  --spacing-xl: 32px;
  --spacing-2xl: 48px;
  
  /* Transitions */
  --transition-fast: 0.15s ease;
  --transition-normal: 0.3s ease;
  --transition-slow: 0.5s ease;
  
  /* Border Radius */
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 14px;
  --radius-xl: 18px;
}

/* ===== RESET & BASE ===== */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  font-size: 16px;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
  overflow-x: hidden;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* ===== ADMIN PANEL LAYOUT ===== */
.institutional-admin-panel {
  display: flex;
  min-height: 100vh;
  position: relative;
}

/* ===== SIDEBAR ===== */
.admin-sidebar {
  width: var(--sidebar-width);
  background: var(--bg-secondary);
  border-right: 1px solid var(--border-color);
  display: flex;
  flex-direction: column;
  position: fixed;
  left: 0;
  top: 0;
  height: 100vh;
  z-index: 1000;
  transition: transform var(--transition-normal), width var(--transition-normal);
  overflow-y: auto;
  overflow-x: hidden;
}

.admin-sidebar::-webkit-scrollbar {
  width: 6px;
}

.admin-sidebar::-webkit-scrollbar-track {
  background: transparent;
}

.admin-sidebar::-webkit-scrollbar-thumb {
  background: var(--border-color);
  border-radius: 3px;
}

.admin-sidebar::-webkit-scrollbar-thumb:hover {
  background: var(--border-hover);
}

/* Sidebar Header */
.sidebar-header {
  padding: var(--spacing-lg);
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: var(--header-height);
}

.admin-logo {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
}

.admin-logo img {
  width: 40px;
  height: 40px;
  object-fit: contain;
}

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

.logo-title {
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--text-primary);
  line-height: 1.2;
}

.logo-subtitle {
  font-size: 0.75rem;
  color: var(--text-muted);
  font-weight: 500;
}

.sidebar-toggle {
  display: none;
  background: transparent;
  border: none;
  color: var(--text-secondary);
  font-size: 1.25rem;
  cursor: pointer;
  padding: var(--spacing-sm);
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
}

.sidebar-toggle:hover {
  background: var(--bg-hover);
  color: var(--text-primary);
}

/* User Info */
.sidebar-user-info {
  padding: var(--spacing-lg);
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
}

.user-avatar {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  overflow: hidden;
  background: var(--bg-tertiary);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  border: 2px solid var(--border-color);
}

.user-avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.avatar-placeholder {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
  font-size: 1.25rem;
}

.user-details {
  flex: 1;
  min-width: 0;
}

.user-name {
  font-size: 0.9375rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 2px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.user-role {
  font-size: 0.8125rem;
  color: var(--text-muted);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.user-status {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
  font-size: 0.75rem;
  color: var(--text-muted);
}

.status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--success);
  box-shadow: 0 0 8px var(--success);
}

/* Navigation */
.sidebar-nav {
  flex: 1;
  padding: var(--spacing-md) 0;
  overflow-y: auto;
}

.nav-section {
  margin-bottom: var(--spacing-lg);
}

.nav-section-title {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  padding: 0 var(--spacing-lg) var(--spacing-sm);
  margin-bottom: var(--spacing-xs);
}

.nav-item {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  padding: var(--spacing-md) var(--spacing-lg);
  color: var(--text-secondary);
  text-decoration: none;
  transition: all var(--transition-fast);
  position: relative;
  font-size: 0.9375rem;
  font-weight: 500;
}

.nav-item i {
  width: 20px;
  text-align: center;
  font-size: 1.125rem;
  flex-shrink: 0;
}

.nav-item span:not(.nav-badge) {
  flex: 1;
  white-space: nowrap;
}

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

.nav-item.active {
  background: var(--bg-active);
  color: var(--primary);
  border-left: 3px solid var(--primary);
}

.nav-item.active i {
  color: var(--primary);
}

.nav-badge {
  background: var(--primary);
  color: white;
  font-size: 0.75rem;
  font-weight: 600;
  padding: 2px 8px;
  border-radius: 12px;
  min-width: 20px;
  text-align: center;
}

.nav-badge.warning {
  background: var(--warning);
}

.nav-badge.danger {
  background: var(--danger);
}

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

.btn-logout {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-md);
  padding: var(--spacing-md);
  background: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  color: var(--text-secondary);
  font-size: 0.9375rem;
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.btn-logout:hover {
  background: var(--danger);
  border-color: var(--danger);
  color: white;
}

.sidebar-version {
  text-align: center;
  font-size: 0.75rem;
  color: var(--text-muted);
}

/* ===== MAIN CONTENT ===== */
.admin-main {
  flex: 1;
  margin-left: var(--sidebar-width);
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  transition: margin-left var(--transition-normal);
}

/* Header */
.admin-header {
  height: var(--header-height);
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 var(--spacing-lg);
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(10px);
}

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

.btn-menu-toggle {
  display: none;
  background: transparent;
  border: none;
  color: var(--text-secondary);
  font-size: 1.25rem;
  cursor: pointer;
  padding: var(--spacing-sm);
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
}

.btn-menu-toggle:hover {
  background: var(--bg-hover);
  color: var(--text-primary);
}

.breadcrumb {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  font-size: 0.9375rem;
}

.breadcrumb-item {
  color: var(--text-muted);
}

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

.breadcrumb-separator {
  color: var(--text-muted);
  margin: 0 var(--spacing-xs);
}

.header-right {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
}

/* Quick Actions */
.quick-actions {
  display: flex;
  gap: var(--spacing-sm);
}

.btn-quick-action {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-md);
  background: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-fast);
  font-size: 1rem;
}

.btn-quick-action:hover {
  background: var(--bg-hover);
  border-color: var(--border-hover);
  color: var(--text-primary);
  transform: translateY(-2px);
}

/* Notifications */
.notifications-dropdown {
  position: relative;
}

.btn-notifications {
  position: relative;
  width: 40px;
  height: 40px;
  border-radius: var(--radius-md);
  background: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-fast);
  font-size: 1.125rem;
}

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

.notification-badge {
  position: absolute;
  top: -4px;
  right: -4px;
  background: var(--danger);
  color: white;
  font-size: 0.6875rem;
  font-weight: 600;
  padding: 2px 6px;
  border-radius: 10px;
  min-width: 18px;
  text-align: center;
  line-height: 1.4;
}

.notifications-panel {
  position: absolute;
  top: calc(100% + var(--spacing-sm));
  right: 0;
  width: 380px;
  max-height: 500px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-xl);
  display: none;
  flex-direction: column;
  overflow: hidden;
  z-index: 1000;
}

.notifications-panel.active {
  display: flex;
}

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

.notifications-header h3 {
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--text-primary);
}

.btn-mark-all-read {
  background: transparent;
  border: none;
  color: var(--primary);
  font-size: 0.875rem;
  font-weight: 500;
  cursor: pointer;
  padding: var(--spacing-xs) var(--spacing-sm);
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
}

.btn-mark-all-read:hover {
  background: var(--bg-hover);
}

.notifications-list {
  flex: 1;
  overflow-y: auto;
  max-height: 400px;
}

.notification-empty {
  padding: var(--spacing-2xl);
  text-align: center;
  color: var(--text-muted);
  font-size: 0.9375rem;
}

/* User Menu */
.user-menu-dropdown {
  position: relative;
}

.btn-user-menu {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  padding: var(--spacing-sm) var(--spacing-md);
  background: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  color: var(--text-secondary);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.btn-user-menu:hover {
  background: var(--bg-hover);
  border-color: var(--border-hover);
  color: var(--text-primary);
}

.user-menu-avatar {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  overflow: hidden;
  background: var(--bg-hover);
  display: flex;
  align-items: center;
  justify-content: center;
  border: 2px solid var(--border-color);
}

.user-menu-avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.user-menu-panel {
  position: absolute;
  top: calc(100% + var(--spacing-sm));
  right: 0;
  width: 280px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-xl);
  display: none;
  flex-direction: column;
  overflow: hidden;
  z-index: 1000;
}

.user-menu-panel.active {
  display: flex;
}

.user-menu-header {
  padding: var(--spacing-lg);
  border-bottom: 1px solid var(--border-color);
}

.user-menu-info {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xs);
}

.user-menu-name {
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-primary);
}

.user-menu-role {
  font-size: 0.875rem;
  color: var(--text-muted);
}

.user-menu-links {
  padding: var(--spacing-sm) 0;
}

.user-menu-link {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  padding: var(--spacing-md) var(--spacing-lg);
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.9375rem;
  transition: all var(--transition-fast);
}

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

.user-menu-link.danger {
  color: var(--danger);
}

.user-menu-link.danger:hover {
  background: rgba(244, 67, 54, 0.1);
  color: var(--danger);
}

.user-menu-divider {
  height: 1px;
  background: var(--border-color);
  margin: var(--spacing-sm) 0;
}

/* Content Area */
.admin-content {
  flex: 1;
  padding: var(--spacing-xl);
  overflow-y: auto;
  background: var(--bg-primary);
}

.content-loading {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 400px;
  color: var(--text-muted);
}

.loading-spinner {
  width: 40px;
  height: 40px;
  border: 3px solid var(--border-color);
  border-top-color: var(--primary);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
  margin-bottom: var(--spacing-md);
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

/* ===== RESPONSIVE ===== */
@media (max-width: 1024px) {
  .admin-sidebar {
    transform: translateX(-100%);
  }

  .admin-sidebar.active {
    transform: translateX(0);
  }

  .admin-main {
    margin-left: 0;
  }

  .btn-menu-toggle {
    display: flex;
  }
}

@media (max-width: 768px) {
  .admin-content {
    padding: var(--spacing-md);
  }

  .notifications-panel {
    width: 320px;
    right: -20px;
  }

  .user-menu-panel {
    width: 260px;
    right: -20px;
  }

  .quick-actions {
    display: none;
  }
}

/* ===== UTILITY CLASSES ===== */
.hidden {
  display: none !important;
}

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

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

.mt-1 { margin-top: var(--spacing-sm); }
.mt-2 { margin-top: var(--spacing-md); }
.mt-3 { margin-top: var(--spacing-lg); }
.mb-1 { margin-bottom: var(--spacing-sm); }
.mb-2 { margin-bottom: var(--spacing-md); }
.mb-3 { margin-bottom: var(--spacing-lg); }