/* ===== VISUAL ENHANCEMENTS FOR REENGAGEMENT & ADMIN ===== */
/* Inspired by home.html modern design patterns */
/* Professional, clean, and user-friendly UI/UX improvements */

/* ===== ENHANCED CSS VARIABLES ===== */
:root {
  /* Modern Color Palette */
  --color-primary: #660000;
  --color-primary-light: #880000;
  --color-primary-dark: #440000;
  --color-accent: #B8860B;
  --color-accent-light: #DAA520;
  
  /* Neutral Colors */
  --color-bg-primary: #ffffff;
  --color-bg-secondary: #f8f9fa;
  --color-bg-tertiary: #f1f3f5;
  --color-border: #e9ecef;
  --color-border-light: #f1f3f5;
  
  /* Text Colors */
  --color-text-primary: #212529;
  --color-text-secondary: #6c757d;
  --color-text-muted: #adb5bd;
  
  /* State Colors */
  --color-success: #059669;
  --color-success-bg: #d1fae5;
  --color-warning: #f59e0b;
  --color-warning-bg: #fef3c7;
  --color-danger: #dc2626;
  --color-danger-bg: #fee2e2;
  --color-info: #3b82f6;
  --color-info-bg: #dbeafe;
  
  /* Modern Shadows */
  --shadow-xs: 0 1px 2px rgba(0,0,0,0.05);
  --shadow-sm: 0 2px 4px rgba(0,0,0,0.06);
  --shadow-md: 0 4px 12px rgba(0,0,0,0.08);
  --shadow-lg: 0 8px 24px rgba(0,0,0,0.12);
  --shadow-xl: 0 16px 40px rgba(0,0,0,0.16);
  --shadow-2xl: 0 24px 56px rgba(0,0,0,0.20);
  --shadow-inner: inset 0 2px 4px rgba(0,0,0,0.06);
  
  /* Smooth Transitions */
  --transition-fast: 0.15s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-base: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 0.5s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-spring: 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
  
  /* Spacing Scale */
  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;
  --spacing-2xl: 3rem;
  --spacing-3xl: 4rem;
  
  /* Border Radius */
  --radius-sm: 6px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;
  --radius-2xl: 24px;
  --radius-full: 9999px;
  
  /* Z-Index Scale */
  --z-base: 1;
  --z-dropdown: 1000;
  --z-sticky: 1020;
  --z-fixed: 1030;
  --z-modal-backdrop: 1040;
  --z-modal: 1050;
  --z-popover: 1060;
  --z-tooltip: 1070;
}

/* ===== SMOOTH SCROLLING & PERFORMANCE ===== */
html {
  scroll-behavior: smooth;
}

* {
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Optimize animations for performance */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

/* ===== ENHANCED TAB NAVIGATION ===== */
.tabs-container-enhanced {
  background: var(--color-bg-primary);
  border-bottom: 1px solid var(--color-border);
  box-shadow: var(--shadow-sm);
  position: sticky;
  top: 60px;
  z-index: var(--z-sticky);
  backdrop-filter: blur(10px);
  background: rgba(255, 255, 255, 0.95);
}

.tab-nav-enhanced {
  display: flex;
  gap: 0;
  overflow-x: auto;
  scrollbar-width: none;
  -ms-overflow-style: none;
  padding: 0 var(--spacing-lg);
}

.tab-nav-enhanced::-webkit-scrollbar {
  display: none;
}

.tab-btn-enhanced {
  position: relative;
  padding: var(--spacing-lg) var(--spacing-xl);
  background: transparent;
  border: none;
  border-bottom: 3px solid transparent;
  cursor: pointer;
  font-weight: 500;
  font-size: 0.9375rem;
  color: var(--color-text-secondary);
  transition: all var(--transition-base);
  white-space: nowrap;
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  outline: none;
}

.tab-btn-enhanced::before {
  content: '';
  position: absolute;
  bottom: -3px;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition-spring);
}

.tab-btn-enhanced:hover {
  color: var(--color-primary);
  background: var(--color-bg-tertiary);
}

.tab-btn-enhanced:hover::before {
  transform: scaleX(0.3);
}

.tab-btn-enhanced.active {
  color: var(--color-primary);
  font-weight: 600;
}

.tab-btn-enhanced.active::before {
  transform: scaleX(1);
}

/* Tab Badge */
.tab-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 20px;
  height: 20px;
  padding: 0 6px;
  background: var(--color-danger);
  color: white;
  border-radius: var(--radius-full);
  font-size: 0.75rem;
  font-weight: 600;
  line-height: 1;
  animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { transform: scale(1); opacity: 1; }
  50% { transform: scale(1.1); opacity: 0.9; }
}

/* Tab Icons */
.tab-icon {
  font-size: 1.125rem;
  transition: transform var(--transition-base);
}

.tab-btn-enhanced:hover .tab-icon {
  transform: scale(1.1);
}

.tab-btn-enhanced.active .tab-icon {
  transform: scale(1.15);
}

/* ===== ENHANCED DATA TABLES ===== */
.table-container-enhanced {
  background: var(--color-bg-primary);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  overflow: hidden;
  margin: var(--spacing-xl) 0;
}

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

.table-title {
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--color-text-primary);
  margin: 0;
}

.table-actions {
  display: flex;
  gap: var(--spacing-sm);
}

.table-responsive-enhanced {
  overflow-x: auto;
  scrollbar-width: thin;
  scrollbar-color: var(--color-border) transparent;
}

.table-responsive-enhanced::-webkit-scrollbar {
  height: 8px;
}

.table-responsive-enhanced::-webkit-scrollbar-track {
  background: transparent;
}

.table-responsive-enhanced::-webkit-scrollbar-thumb {
  background: var(--color-border);
  border-radius: var(--radius-full);
}

.table-responsive-enhanced::-webkit-scrollbar-thumb:hover {
  background: var(--color-text-muted);
}

.table-enhanced {
  width: 100%;
  border-collapse: separate;
  border-spacing: 0;
}

.table-enhanced thead {
  background: linear-gradient(to bottom, var(--color-bg-secondary), var(--color-bg-tertiary));
  position: sticky;
  top: 0;
  z-index: var(--z-base);
}

.table-enhanced th {
  padding: var(--spacing-md) var(--spacing-lg);
  text-align: left;
  font-weight: 600;
  font-size: 0.875rem;
  color: var(--color-text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  border-bottom: 2px solid var(--color-border);
  white-space: nowrap;
}

.table-enhanced tbody tr {
  background: var(--color-bg-primary);
  transition: all var(--transition-fast);
  border-bottom: 1px solid var(--color-border-light);
}

.table-enhanced tbody tr:hover {
  background: var(--color-bg-secondary);
  transform: scale(1.005);
  box-shadow: var(--shadow-sm);
}

.table-enhanced tbody tr:active {
  transform: scale(0.998);
}

.table-enhanced td {
  padding: var(--spacing-md) var(--spacing-lg);
  font-size: 0.9375rem;
  color: var(--color-text-primary);
  vertical-align: middle;
}

/* Zebra Striping (Optional) */
.table-striped tbody tr:nth-child(even) {
  background: var(--color-bg-secondary);
}

.table-striped tbody tr:nth-child(even):hover {
  background: var(--color-bg-tertiary);
}

/* Compact Table */
.table-compact th,
.table-compact td {
  padding: var(--spacing-sm) var(--spacing-md);
}

/* ===== ENHANCED BUTTONS ===== */
.btn-enhanced {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-sm) var(--spacing-lg);
  font-size: 0.9375rem;
  font-weight: 500;
  line-height: 1.5;
  border-radius: var(--radius-md);
  border: none;
  cursor: pointer;
  transition: all var(--transition-base);
  text-decoration: none;
  white-space: nowrap;
  outline: none;
  position: relative;
  overflow: hidden;
}

.btn-enhanced::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 0;
  height: 0;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.5);
  transform: translate(-50%, -50%);
  transition: width 0.6s, height 0.6s;
}

.btn-enhanced:active::before {
  width: 300px;
  height: 300px;
}

.btn-enhanced:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.btn-enhanced:active {
  transform: translateY(0);
}

.btn-enhanced:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  transform: none !important;
}

/* Button Variants */
.btn-primary {
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
  color: white;
}

.btn-primary:hover {
  background: linear-gradient(135deg, var(--color-primary-light), var(--color-primary));
  box-shadow: 0 8px 24px rgba(102, 0, 0, 0.3);
}

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

.btn-secondary:hover {
  background: var(--color-bg-tertiary);
  border-color: var(--color-text-muted);
}

.btn-success {
  background: linear-gradient(135deg, var(--color-success), #047857);
  color: white;
}

.btn-success:hover {
  box-shadow: 0 8px 24px rgba(5, 150, 105, 0.3);
}

.btn-danger {
  background: linear-gradient(135deg, var(--color-danger), #b91c1c);
  color: white;
}

.btn-danger:hover {
  box-shadow: 0 8px 24px rgba(220, 38, 38, 0.3);
}

.btn-sm {
  padding: var(--spacing-xs) var(--spacing-md);
  font-size: 0.875rem;
}

.btn-lg {
  padding: var(--spacing-md) var(--spacing-xl);
  font-size: 1rem;
}

/* Button Loading State */
.btn-loading {
  pointer-events: none;
  position: relative;
  color: transparent !important;
}

.btn-loading::after {
  content: '';
  position: absolute;
  width: 16px;
  height: 16px;
  top: 50%;
  left: 50%;
  margin-left: -8px;
  margin-top: -8px;
  border: 2px solid rgba(255, 255, 255, 0.3);
  border-radius: 50%;
  border-top-color: white;
  animation: spin 0.6s linear infinite;
}

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

/* ===== ENHANCED CARDS ===== */
.card-enhanced {
  background: var(--color-bg-primary);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-md);
  padding: var(--spacing-xl);
  margin-bottom: var(--spacing-lg);
  transition: all var(--transition-base);
  border: 1px solid var(--color-border-light);
}

.card-enhanced:hover {
  box-shadow: var(--shadow-xl);
  transform: translateY(-4px);
}

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

.card-title {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--color-text-primary);
  margin: 0;
}

.card-subtitle {
  font-size: 0.875rem;
  color: var(--color-text-secondary);
  margin-top: var(--spacing-xs);
}

.card-body {
  padding: 0;
}

.card-footer {
  padding-top: var(--spacing-lg);
  border-top: 1px solid var(--color-border-light);
  margin-top: var(--spacing-lg);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

/* ===== SCROLL TO TOP BUTTON ===== */
.scroll-to-top {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  width: 48px;
  height: 48px;
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
  color: white;
  border: none;
  border-radius: 50%;
  cursor: pointer;
  box-shadow: var(--shadow-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transform: translateY(20px);
  transition: all var(--transition-base);
  z-index: var(--z-fixed);
}

.scroll-to-top.visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.scroll-to-top:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-2xl);
}

.scroll-to-top:active {
  transform: scale(0.95);
}

/* ===== EMPTY STATES ===== */
.empty-state-enhanced {
  text-align: center;
  padding: var(--spacing-3xl) var(--spacing-xl);
  color: var(--color-text-secondary);
}

.empty-state-icon {
  font-size: 4rem;
  opacity: 0.3;
  margin-bottom: var(--spacing-lg);
  animation: float 3s ease-in-out infinite;
}

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-10px); }
}

.empty-state-title {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--color-text-primary);
  margin-bottom: var(--spacing-sm);
}

.empty-state-message {
  font-size: 0.9375rem;
  color: var(--color-text-secondary);
  margin-bottom: var(--spacing-lg);
}

/* ===== LOADING SKELETONS ===== */
.skeleton {
  background: linear-gradient(
    90deg,
    var(--color-bg-secondary) 25%,
    var(--color-bg-tertiary) 50%,
    var(--color-bg-secondary) 75%
  );
  background-size: 200% 100%;
  animation: shimmer 1.5s infinite;
  border-radius: var(--radius-md);
}

@keyframes shimmer {
  0% { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}

.skeleton-text {
  height: 16px;
  margin-bottom: var(--spacing-sm);
}

.skeleton-title {
  height: 24px;
  width: 60%;
  margin-bottom: var(--spacing-md);
}

.skeleton-button {
  height: 40px;
  width: 120px;
  border-radius: var(--radius-md);
}

/* ===== STATUS BADGES ===== */
.badge-enhanced {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-xs);
  padding: var(--spacing-xs) var(--spacing-md);
  font-size: 0.75rem;
  font-weight: 600;
  line-height: 1;
  border-radius: var(--radius-full);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.badge-success {
  background: var(--color-success-bg);
  color: var(--color-success);
}

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

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

.badge-info {
  background: var(--color-info-bg);
  color: var(--color-info);
}

.badge-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: currentColor;
  animation: blink 2s ease-in-out infinite;
}

@keyframes blink {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.4; }
}

/* ===== SEARCH & FILTER BAR ===== */
.filter-bar-enhanced {
  background: var(--color-bg-primary);
  padding: var(--spacing-lg);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  margin-bottom: var(--spacing-xl);
  display: flex;
  gap: var(--spacing-md);
  flex-wrap: wrap;
  align-items: center;
}

.search-input-enhanced {
  flex: 1;
  min-width: 250px;
  padding: var(--spacing-sm) var(--spacing-md);
  padding-left: var(--spacing-xl);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  font-size: 0.9375rem;
  transition: all var(--transition-fast);
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' fill='%236c757d' viewBox='0 0 16 16'%3E%3Cpath d='M11.742 10.344a6.5 6.5 0 1 0-1.397 1.398h-.001c.03.04.062.078.098.115l3.85 3.85a1 1 0 0 0 1.415-1.414l-3.85-3.85a1.007 1.007 0 0 0-.115-.1zM12 6.5a5.5 5.5 0 1 1-11 0 5.5 5.5 0 0 1 11 0z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: 12px center;
  background-size: 16px;
}

.search-input-enhanced:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(102, 0, 0, 0.1);
}

.filter-select-enhanced {
  padding: var(--spacing-sm) var(--spacing-md);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  font-size: 0.9375rem;
  background: var(--color-bg-primary);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.filter-select-enhanced:hover {
  border-color: var(--color-text-muted);
}

.filter-select-enhanced:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(102, 0, 0, 0.1);
}

/* ===== TOAST NOTIFICATIONS (Enhanced) ===== */
.toast-enhanced {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  min-width: 300px;
  max-width: 500px;
  background: white;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-2xl);
  display: flex;
  align-items: start;
  gap: var(--spacing-md);
  padding: var(--spacing-lg);
  transform: translateX(400px);
  opacity: 0;
  transition: all var(--transition-base);
  z-index: var(--z-tooltip);
  border-left: 4px solid var(--color-info);
}

.toast-enhanced.show {
  transform: translateX(0);
  opacity: 1;
}

.toast-icon {
  font-size: 1.5rem;
  flex-shrink: 0;
}

.toast-content {
  flex: 1;
}

.toast-title {
  font-weight: 600;
  margin-bottom: var(--spacing-xs);
  color: var(--color-text-primary);
}

.toast-message {
  font-size: 0.875rem;
  color: var(--color-text-secondary);
}

.toast-close {
  background: none;
  border: none;
  font-size: 1.25rem;
  color: var(--color-text-muted);
  cursor: pointer;
  padding: 0;
  width: 24px;
  height: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
}

.toast-close:hover {
  background: var(--color-bg-tertiary);
  color: var(--color-text-primary);
}

.toast-success { border-left-color: var(--color-success); }
.toast-warning { border-left-color: var(--color-warning); }
.toast-error { border-left-color: var(--color-danger); }
.toast-info { border-left-color: var(--color-info); }

/* ===== RESPONSIVE DESIGN ===== */
@media (max-width: 768px) {
  .tab-btn-enhanced {
    padding: var(--spacing-md) var(--spacing-lg);
    font-size: 0.875rem;
  }
  
  .table-enhanced th,
  .table-enhanced td {
    padding: var(--spacing-sm) var(--spacing-md);
    font-size: 0.875rem;
  }
  
  .card-enhanced {
    padding: var(--spacing-lg);
  }
  
  .filter-bar-enhanced {
    flex-direction: column;
  }
  
  .search-input-enhanced,
  .filter-select-enhanced {
    width: 100%;
  }
  
  .scroll-to-top {
    bottom: 1rem;
    right: 1rem;
    width: 40px;
    height: 40px;
  }
}

/* ===== PRINT STYLES ===== */
@media print {
  .scroll-to-top,
  .tab-nav-enhanced,
  .filter-bar-enhanced,
  .toast-enhanced {
    display: none !important;
  }
  
  .card-enhanced,
  .table-container-enhanced {
    box-shadow: none !important;
    border: 1px solid #ddd !important;
  }
}