/**
 * BrainSAIT Healthcare UI - Complete CSS Framework
 * Optimized for 60fps performance with Glass Morphism and RTL support
 */

/* CSS Custom Properties (CSS Variables) */
:root {
  /* Colors */
  --primary-color: #3B82F6;
  --primary-light: #60A5FA;
  --primary-dark: #1D4ED8;
  --secondary-color: #6B7280;
  --success-color: #10B981;
  --warning-color: #F59E0B;
  --error-color: #EF4444;
  --info-color: #3B82F6;

  /* Glass Morphism */
  --glass-bg: rgba(255, 255, 255, 0.1);
  --glass-border: rgba(255, 255, 255, 0.2);
  --glass-blur: 20px;
  --glass-shadow: 0 8px 32px 0 rgba(31, 38, 135, 0.37);

  /* Typography */
  --font-family-sans: 'Inter', system-ui, -apple-system, sans-serif;
  --font-family-arabic: 'Tajawal', 'Cairo', 'Noto Sans Arabic', sans-serif;
  --font-size-xs: 0.75rem;
  --font-size-sm: 0.875rem;
  --font-size-base: 1rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.25rem;
  --font-size-2xl: 1.5rem;
  --font-size-3xl: 1.875rem;

  /* Spacing */
  --spacing-1: 0.25rem;
  --spacing-2: 0.5rem;
  --spacing-3: 0.75rem;
  --spacing-4: 1rem;
  --spacing-5: 1.25rem;
  --spacing-6: 1.5rem;
  --spacing-8: 2rem;
  --spacing-10: 2.5rem;
  --spacing-12: 3rem;

  /* Border Radius */
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  --radius-2xl: 1.5rem;

  /* 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);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);

  /* Transitions */
  --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-normal: 300ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 500ms cubic-bezier(0.4, 0, 0.2, 1);
}

/* Dark theme */
[data-theme="dark"] {
  --glass-bg: rgba(0, 0, 0, 0.3);
  --glass-border: rgba(255, 255, 255, 0.1);
  --glass-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.5);
}

/* RTL Support */
[dir="rtl"] {
  font-family: var(--font-family-arabic);
}

/* Base Styles */
* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-family-sans);
  line-height: 1.6;
  color: var(--text-primary, #1F2937);
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  min-height: 100vh;
  margin: 0;
  padding: 0;
}

[dir="rtl"] body {
  font-family: var(--font-family-arabic);
}

/* Glass Morphism Components */
.glass {
  background: var(--glass-bg);
  backdrop-filter: blur(var(--glass-blur));
  -webkit-backdrop-filter: blur(var(--glass-blur));
  border: 1px solid var(--glass-border);
  box-shadow: var(--glass-shadow);
  transition: all var(--transition-normal);
}

.glass:hover {
  background: rgba(255, 255, 255, 0.15);
  border-color: rgba(255, 255, 255, 0.3);
  transform: translateY(-2px);
}

/* Button Components */
.brainsait-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-2);
  padding: var(--spacing-3) var(--spacing-6);
  font-size: var(--font-size-base);
  font-weight: 600;
  text-decoration: none;
  border: none;
  border-radius: var(--radius-lg);
  cursor: pointer;
  transition: all var(--transition-fast);
  user-select: none;
  position: relative;
  overflow: hidden;
}

.brainsait-btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
  pointer-events: none;
}

.brainsait-btn-primary {
  background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
  color: white;
  box-shadow: var(--shadow-md);
}

.brainsait-btn-primary:hover:not(:disabled) {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.brainsait-btn-glass {
  background: var(--glass-bg);
  backdrop-filter: blur(var(--glass-blur));
  border: 1px solid var(--glass-border);
  color: var(--primary-color);
}

.brainsait-btn-glass:hover:not(:disabled) {
  background: rgba(255, 255, 255, 0.2);
  border-color: var(--primary-color);
}

/* Size variants */
.brainsait-btn-sm {
  padding: var(--spacing-2) var(--spacing-4);
  font-size: var(--font-size-sm);
}

.brainsait-btn-lg {
  padding: var(--spacing-4) var(--spacing-8);
  font-size: var(--font-size-lg);
}

/* Card Components */
.brainsait-card {
  background: var(--glass-bg);
  backdrop-filter: blur(var(--glass-blur));
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-xl);
  padding: var(--spacing-6);
  box-shadow: var(--glass-shadow);
  transition: all var(--transition-normal);
}

.brainsait-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 40px 0 rgba(31, 38, 135, 0.4);
}

.brainsait-card-compact {
  padding: var(--spacing-4);
}

/* Patient Card Specific */
.patient-card {
  display: flex;
  align-items: center;
  gap: var(--spacing-4);
  min-height: 120px;
}

.patient-card-compact {
  min-height: 80px;
  gap: var(--spacing-3);
}

.patient-avatar {
  width: 60px;
  height: 60px;
  border-radius: 50%;
  overflow: hidden;
  background: var(--glass-bg);
  flex-shrink: 0;
}

.patient-card-compact .patient-avatar {
  width: 40px;
  height: 40px;
}

.patient-info {
  flex: 1;
}

.patient-name {
  font-size: var(--font-size-lg);
  font-weight: 600;
  margin: 0 0 var(--spacing-2) 0;
  color: var(--text-primary, #1F2937);
}

.patient-details {
  display: flex;
  gap: var(--spacing-4);
  flex-wrap: wrap;
  font-size: var(--font-size-sm);
  color: var(--text-secondary, #6B7280);
}

/* Dashboard Components */
.healthcare-dashboard {
  padding: var(--spacing-6);
  min-height: 100vh;
}

.dashboard-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--spacing-6);
}

.dashboard-title {
  font-size: var(--font-size-3xl);
  font-weight: 700;
  margin: 0;
  color: var(--text-primary, #1F2937);
}

.dashboard-grid {
  display: grid;
  gap: var(--spacing-6);
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
}

.dashboard-widget {
  background: var(--glass-bg);
  backdrop-filter: blur(var(--glass-blur));
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-xl);
  padding: var(--spacing-5);
  min-height: 200px;
  transition: all var(--transition-normal);
  cursor: pointer;
}

.dashboard-widget:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 40px 0 rgba(31, 38, 135, 0.4);
}

.widget-title {
  font-size: var(--font-size-lg);
  font-weight: 600;
  margin: 0 0 var(--spacing-4) 0;
}

.widget-value {
  font-size: var(--font-size-3xl);
  font-weight: 700;
  margin: 0 0 var(--spacing-2) 0;
  color: var(--primary-color);
}

/* Notification System */
.notification-container {
  position: fixed;
  top: var(--spacing-5);
  right: var(--spacing-5);
  z-index: 9999;
  display: flex;
  flex-direction: column;
  gap: var(--spacing-3);
  max-width: 400px;
}

[dir="rtl"] .notification-container {
  right: auto;
  left: var(--spacing-5);
}

.notification {
  background: var(--glass-bg);
  backdrop-filter: blur(var(--glass-blur));
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  padding: var(--spacing-4);
  box-shadow: var(--glass-shadow);
  color: white;
  transition: all var(--transition-normal);
  transform: translateX(100%);
  opacity: 0;
}

.notification.show {
  transform: translateX(0);
  opacity: 1;
}

[dir="rtl"] .notification {
  transform: translateX(-100%);
}

[dir="rtl"] .notification.show {
  transform: translateX(0);
}

.notification-success {
  background: linear-gradient(135deg, var(--success-color), #059669);
}

.notification-error {
  background: linear-gradient(135deg, var(--error-color), #DC2626);
}

.notification-warning {
  background: linear-gradient(135deg, var(--warning-color), #D97706);
}

.notification-info {
  background: linear-gradient(135deg, var(--info-color), #2563EB);
}

/* Loading States */
.loading-spinner {
  width: 20px;
  height: 20px;
  border: 2px solid rgba(255, 255, 255, 0.3);
  border-top: 2px solid rgba(255, 255, 255, 0.8);
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

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

.loading-shimmer {
  background: linear-gradient(
    90deg,
    rgba(255, 255, 255, 0) 0%,
    rgba(255, 255, 255, 0.2) 20%,
    rgba(255, 255, 255, 0.5) 60%,
    rgba(255, 255, 255, 0)
  );
  background-size: 200px 100%;
  background-repeat: no-repeat;
  animation: shimmer 2s infinite;
}

@keyframes shimmer {
  0% {
    background-position: -200px 0;
  }
  100% {
    background-position: calc(200px + 100%) 0;
  }
}

/* Responsive Design */
@media (max-width: 768px) {
  .healthcare-dashboard {
    padding: var(--spacing-4);
  }
  
  .dashboard-grid {
    grid-template-columns: 1fr;
    gap: var(--spacing-4);
  }
  
  .brainsait-card {
    padding: var(--spacing-4);
  }
  
  .notification-container {
    top: var(--spacing-4);
    right: var(--spacing-4);
    left: var(--spacing-4);
    max-width: none;
  }
  
  [dir="rtl"] .notification-container {
    left: var(--spacing-4);
  }
}

/* Performance Optimizations */
.brainsait-card,
.dashboard-widget,
.notification,
.brainsait-btn {
  will-change: transform, opacity;
  transform: translateZ(0);
  backface-visibility: hidden;
}

/* Accessibility */
@media (prefers-reduced-motion: reduce) {
  * {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

.brainsait-btn:focus-visible,
.brainsait-card:focus-visible,
.dashboard-widget:focus-visible {
  outline: 2px solid var(--primary-color);
  outline-offset: 2px;
}

/* High Contrast Mode */
@media (prefers-contrast: high) {
  .glass,
  .brainsait-card,
  .dashboard-widget {
    background: rgba(255, 255, 255, 0.95) !important;
    border: 2px solid rgba(0, 0, 0, 0.8) !important;
    backdrop-filter: none !important;
  }
  
  [data-theme="dark"] .glass,
  [data-theme="dark"] .brainsait-card,
  [data-theme="dark"] .dashboard-widget {
    background: rgba(0, 0, 0, 0.95) !important;
    border: 2px solid rgba(255, 255, 255, 0.8) !important;
  }
}

/* Print Styles */
@media print {
  .notification-container,
  .brainsait-btn {
    display: none !important;
  }
  
  .brainsait-card,
  .dashboard-widget {
    break-inside: avoid;
    background: white !important;
    border: 1px solid #ccc !important;
    box-shadow: none !important;
  }
}