/**
 * UniBook Design System
 * Standardized styles for consistent UI/UX across all dashboards
 * Version: 1.0.0
 */

/* ========================================
   1. CSS VARIABLES (Design Tokens)
   ======================================== */
:root {
  /* Fonts */
  --font-heading: 'Outfit', 'Inter', sans-serif;
  --font-body: 'Inter', 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;

  /* Primary Colors */
  --primary: #4338ca;
  --primary-hover: #3730a3;
  --primary-soft: #e0e7ff;
  --primary-light: #eef2ff;

  /* Status Colors */
  --success: #22c55e;
  --success-soft: #dcfce7;
  --success-light: #f0fdf4;

  --warning: #eab308;
  --warning-soft: #fef9c3;
  --warning-light: #fefce8;

  --danger: #ef4444;
  --danger-soft: #fee2e2;
  --danger-light: #fef2f2;

  --info: #3b82f6;
  --info-soft: #dbeafe;
  --info-light: #eff6ff;

  --secondary: #64748b;
  --secondary-soft: #f1f5f9;
  --secondary-light: #f8fafc;

  /* Neutral Colors */
  --gray-50: #f8fafc;
  --gray-100: #f1f5f9;
  --gray-200: #e2e8f0;
  --gray-300: #cbd5e1;
  --gray-400: #94a3b8;
  --gray-500: #64748b;
  --gray-600: #475569;
  --gray-700: #334155;
  --gray-800: #1e293b;
  --gray-900: #0f172a;

  /* Border Radius */
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 20px;
  --radius-full: 9999px;

  /* Shadows */
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);

  /* Spacing */
  --spacing-xs: 0.5rem;
  --spacing-sm: 0.75rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;
  --spacing-2xl: 3rem;

  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-base: 200ms ease;
  --transition-slow: 300ms ease;
}

/* ========================================
   2. GLOBAL STYLES
   ======================================== */
body {
  font-family: var(--font-body);
  background-color: var(--gray-50);
  color: var(--gray-800);
}

h1, h2, h3, h4, h5, h6, .font-heading {
  font-family: var(--font-heading);
  font-weight: 700;
  color: var(--gray-900);
}

/* ========================================
   3. CARD COMPONENTS
   ======================================== */
.card-modern {
  border: none;
  border-radius: var(--radius-xl);
  background: white;
  box-shadow: var(--shadow-sm);
  transition: box-shadow var(--transition-base), transform var(--transition-base);
  overflow: hidden;
}

.card-modern:hover {
  box-shadow: var(--shadow-md);
}

.card-modern.card-hoverable:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.card-header-modern {
  background: transparent;
  border-bottom: 1px solid var(--gray-100);
  padding: var(--spacing-lg);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.card-title-modern {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1.125rem;
  color: var(--gray-900);
  margin-bottom: 0;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.card-title-modern i {
  color: var(--primary);
}

.card-body-modern {
  padding: var(--spacing-lg);
}

.card-footer-modern {
  background: var(--gray-50);
  border-top: 1px solid var(--gray-100);
  padding: var(--spacing-md) var(--spacing-lg);
}

/* ========================================
   4. STATISTICS WIDGETS
   ======================================== */
.stat-widget {
  position: relative;
  padding: var(--spacing-lg);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  min-height: 140px;
}

.stat-icon-box {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  margin-bottom: var(--spacing-md);
  transition: transform var(--transition-base);
}

.stat-widget:hover .stat-icon-box {
  transform: scale(1.05);
}

.stat-value {
  font-size: 2rem;
  font-weight: 700;
  color: var(--gray-900);
  line-height: 1;
  margin-bottom: var(--spacing-xs);
  font-family: var(--font-heading);
}

.stat-label {
  color: #000000 !important;
  font-weight: 700 !important;
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.stat-trend {
  margin-top: var(--spacing-sm);
  font-size: 0.75rem;
}

/* ========================================
   5. TABLES
   ======================================== */
.table-modern {
  border-collapse: separate;
  border-spacing: 0;
}

.table-modern thead th {
  background-color: var(--gray-50);
  color: var(--gray-600);
  font-weight: 600;
  text-transform: uppercase;
  font-size: 0.75rem;
  letter-spacing: 0.05em;
  padding: var(--spacing-md) var(--spacing-lg);
  border-bottom: 2px solid var(--gray-200);
  white-space: nowrap;
}

.table-modern tbody td {
  padding: var(--spacing-md) var(--spacing-lg);
  vertical-align: middle;
  border-bottom: 1px solid var(--gray-100);
  color: var(--gray-700);
  font-size: 0.875rem;
}

.table-modern tbody tr:last-child td {
  border-bottom: none;
}

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

.table-modern tbody tr:hover {
  background-color: var(--gray-50);
}

.table-modern tbody tr.row-highlight {
  background-color: var(--primary-light);
}

/* ========================================
   6. BADGES
   ======================================== */
.badge-modern {
  padding: 0.375em 0.875em;
  border-radius: var(--radius-full);
  font-weight: 600;
  font-size: 0.75rem;
  letter-spacing: 0.025em;
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
}

.badge-success-modern {
  background-color: #10b981;
  color: #ffffff;
  font-weight: 700;
}

.badge-warning-modern {
  background-color: #f59e0b;
  color: #ffffff;
  font-weight: 700;
}

.badge-danger-modern {
  background-color: #ef4444;
  color: #ffffff;
  font-weight: 700;
}

.badge-info-modern {
  background-color: #06b6d4;
  color: #ffffff;
  font-weight: 700;
}

.badge-gray-modern {
  background-color: #6b7280;
  color: #ffffff;
  font-weight: 700;
}

.badge-primary-modern {
  background-color: #4338ca;
  color: #ffffff;
  font-weight: 700;
}

/* ========================================
   7. BUTTONS
   ======================================== */
.btn-modern {
  border-radius: var(--radius-md);
  font-weight: 600;
  padding: 0.625rem 1.25rem;
  transition: all var(--transition-base);
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  border: none;
}

.btn-modern:hover {
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

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

.btn-modern-sm {
  padding: 0.375rem 0.875rem;
  font-size: 0.875rem;
}

.btn-modern-lg {
  padding: 0.875rem 1.75rem;
  font-size: 1.125rem;
}

.btn-icon-modern {
  width: 36px;
  height: 36px;
  padding: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-md);
}

/* ========================================
   8. MODALS
   ======================================== */
.modal-modern .modal-content {
  border: none;
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-xl);
  overflow: hidden;
}

.modal-modern .modal-header {
  background: var(--gray-50);
  border-bottom: 1px solid var(--gray-200);
  padding: var(--spacing-lg);
}

.modal-modern .modal-title {
  font-family: var(--font-heading);
  font-weight: 700;
  color: var(--gray-900);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.modal-modern .modal-body {
  padding: var(--spacing-lg);
}

.modal-modern .modal-footer {
  background: var(--gray-50);
  border-top: 1px solid var(--gray-200);
  padding: var(--spacing-lg);
}

/* ========================================
   9. FORMS
   ======================================== */
.form-label-modern {
  font-weight: 600;
  color: var(--gray-700);
  margin-bottom: 0.5rem;
  font-size: 0.875rem;
}

.form-control-modern {
  border-radius: var(--radius-md);
  border: 1px solid var(--gray-300);
  padding: 0.625rem 0.875rem;
  transition: all var(--transition-base);
}

.form-control-modern:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px var(--primary-soft);
  outline: none;
}

.form-select-modern {
  border-radius: var(--radius-md);
  border: 1px solid var(--gray-300);
  padding: 0.625rem 2.5rem 0.625rem 0.875rem;
  transition: all var(--transition-base);
  background-position: right 0.75rem center;
}

.form-select-modern:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px var(--primary-soft);
  outline: none;
}

/* ========================================
   10. ALERTS & NOTIFICATIONS
   ======================================== */
.alert-modern {
  border-radius: var(--radius-lg);
  border: none;
  padding: var(--spacing-md) var(--spacing-lg);
  display: flex;
  align-items: flex-start;
  gap: var(--spacing-md);
}

.alert-modern i {
  font-size: 1.25rem;
  margin-top: 0.125rem;
}

.alert-success-modern {
  background-color: var(--success-soft);
  color: #166534;
}

.alert-warning-modern {
  background-color: var(--warning-soft);
  color: #854d0e;
}

.alert-danger-modern {
  background-color: var(--danger-soft);
  color: #991b1b;
}

.alert-info-modern {
  background-color: var(--info-soft);
  color: #1e40af;
}

/* ========================================
   11. UTILITIES
   ======================================== */
.text-gradient {
  background: linear-gradient(135deg, var(--primary) 0%, #6366f1 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hover-lift {
  transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.hover-lift:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.divider-modern {
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--gray-200), transparent);
  margin: var(--spacing-lg) 0;
}

.skeleton {
  background: linear-gradient(90deg, var(--gray-100) 25%, var(--gray-200) 50%, var(--gray-100) 75%);
  background-size: 200% 100%;
  animation: skeleton-loading 1.5s ease-in-out infinite;
}

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

/* ========================================
   12. ANIMATIONS
   ======================================== */
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes slideIn {
  from { transform: translateX(-100%); }
  to { transform: translateX(0); }
}

@keyframes scaleIn {
  from { transform: scale(0.95); opacity: 0; }
  to { transform: scale(1); opacity: 1; }
}

.animate-fade-in {
  animation: fadeIn 0.3s ease-out;
}

.animate-slide-in {
  animation: slideIn 0.3s ease-out;
}

.animate-scale-in {
  animation: scaleIn 0.2s ease-out;
}

/* ========================================
   13. ENHANCED TEXT CONTRAST
   ======================================== */
/* Fix ONLY the stat widget labels (from screenshot) */

/* Force stat label to be BLACK */
.stat-label,
.stat-widget .stat-label {
  color: #000000 !important;
  font-weight: 700 !important;
}

/* Stat widget small text */
.stat-widget small {
  color: #1e293b !important;
  font-weight: 600 !important;
}

/* Stat widget badges - ensure vibrant colors are visible */
.stat-widget .badge {
  font-weight: 700 !important;
}

.stat-widget .badge-warning-modern {
  background-color: #f59e0b !important;
  color: #ffffff !important;
}

.stat-widget .badge-success-modern {
  background-color: #10b981 !important;
  color: #ffffff !important;
}

.stat-widget .badge-info-modern {
  background-color: #06b6d4 !important;
  color: #ffffff !important;
}

.stat-widget .badge-gray-modern {
  background-color: #6b7280 !important;
  color: #ffffff !important;
}

/* Standardize ALL text - balanced colors (not too dark) */
h1, h2, h3, h4, h5, h6 {
  color: #1e293b !important;
  font-weight: 700 !important;
}

.card-title,
.card-title-modern,
.modal-title {
  color: #1e293b !important;
  font-weight: 700 !important;
}

/* Table headers - balanced dark color */
.table thead th,
.table-modern thead th {
  color: #334155 !important;
  font-weight: 700 !important;
  text-transform: uppercase !important;
}

/* Table body text - readable but not too dark */
.table tbody td,
.table-modern tbody td {
  color: #475569 !important;
}

.table tbody .fw-medium,
.table-modern tbody .fw-medium,
.table tbody strong,
.table-modern tbody strong {
  color: #1e293b !important;
  font-weight: 600 !important;
}

/* Ensure all small/muted text is still readable */
small,
.small,
.text-muted {
  color: #64748b !important;
  font-weight: 500 !important;
}

/* ========================================
   14. RESPONSIVE ADJUSTMENTS
   ======================================== */
@media (max-width: 768px) {
  :root {
    --spacing-lg: 1rem;
    --spacing-xl: 1.5rem;
  }

  .card-header-modern {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--spacing-sm);
  }

  .stat-value {
    font-size: 1.75rem;
  }

  .table-modern thead th,
  .table-modern tbody td {
    padding: var(--spacing-sm) var(--spacing-md);
  }
}

/* ========================================
   15. PRINT STYLES
   ======================================== */
@media print {
  .card-modern {
    box-shadow: none;
    border: 1px solid var(--gray-300);
  }

  .btn-modern, .badge-modern {
    -webkit-print-color-adjust: exact;
    print-color-adjust: exact;
  }
}