/* Import Google Fonts */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&family=Poppins:wght@300;400;500;600;700&display=swap');

:root {
  /* Modern Healthcare Color Palette */
  --primary: #2563eb;
  --primary-50: #eff6ff;
  --primary-100: #dbeafe;
  --primary-200: #bfdbfe;
  --primary-300: #93c5fd;
  --primary-400: #60a5fa;
  --primary-500: #3b82f6;
  --primary-600: #2563eb;
  --primary-700: #1d4ed8;
  --primary-800: #1e40af;
  --primary-900: #1e3a8a;
  
  --secondary: #10b981;
  --secondary-50: #ecfdf5;
  --secondary-100: #d1fae5;
  --secondary-200: #a7f3d0;
  --secondary-300: #6ee7b7;
  --secondary-400: #34d399;
  --secondary-500: #10b981;
  --secondary-600: #059669;
  --secondary-700: #047857;
  --secondary-800: #065f46;
  --secondary-900: #064e3b;
  
  --accent: #8b5cf6;
  --accent-50: #f5f3ff;
  --accent-100: #ede9fe;
  --accent-200: #ddd6fe;
  --accent-300: #c4b5fd;
  --accent-400: #a78bfa;
  --accent-500: #8b5cf6;
  --accent-600: #7c3aed;
  --accent-700: #6d28d9;
  --accent-800: #5b21b6;
  --accent-900: #4c1d95;
  
  /* Neutral Colors */
  --gray-50: #f9fafb;
  --gray-100: #f3f4f6;
  --gray-200: #e5e7eb;
  --gray-300: #d1d5db;
  --gray-400: #9ca3af;
  --gray-500: #6b7280;
  --gray-600: #4b5563;
  --gray-700: #374151;
  --gray-800: #1f2937;
  --gray-900: #111827;
  
  /* Semantic Colors */
  --success: #10b981;
  --warning: #f59e0b;
  --error: #ef4444;
  --info: #3b82f6;
  
  /* Background Colors */
  --bg-primary: #ffffff;
  --bg-secondary: #f9fafb;
  --bg-tertiary: #f3f4f6;
  
  /* Text Colors */
  --text-primary: #111827;
  --text-secondary: #4b5563;
  --text-tertiary: #6b7280;
  --text-inverse: #ffffff;
  
  /* Border & Shadow */
  --border-light: #e5e7eb;
  --border-medium: #d1d5db;
  --border-dark: #9ca3af;
  --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);
  --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
  
  /* Spacing */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;
  
  /* Border Radius */
  --radius-sm: 0.25rem;
  --radius-md: 0.375rem;
  --radius-lg: 0.5rem;
  --radius-xl: 0.75rem;
  --radius-2xl: 1rem;
  --radius-3xl: 1.5rem;
  --radius-full: 9999px;
  
  /* Typography */
  --font-family-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  --font-family-display: 'Poppins', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  
  /* Transitions */
  --transition-fast: 150ms ease-in-out;
  --transition-normal: 250ms ease-in-out;
  --transition-slow: 350ms ease-in-out;
}

/* Reset and Base Styles */
*, *::before, *::after {
  box-sizing: border-box;
}

* {
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-family-sans);
  font-size: 16px;
  line-height: 1.6;
  color: var(--text-primary);
  background: linear-gradient(135deg, var(--primary-50) 0%, var(--secondary-50) 100%);
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Enhanced Navigation */
.navbar {
  background: rgba(255, 255, 255, 0.95) !important;
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border-light);
  box-shadow: var(--shadow-sm);
  transition: var(--transition-normal);
}

.navbar-brand {
  font-family: var(--font-family-display);
  font-weight: 700;
  font-size: 1.5rem;
  color: var(--primary-600) !important;
}

.navbar-text {
  font-weight: 500;
  color: var(--text-secondary) !important;
}

/* Enhanced Buttons */
.btn {
  font-weight: 500;
  border-radius: var(--radius-lg);
  padding: 0.625rem 1.25rem;
  transition: var(--transition-fast);
  border: none;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  text-decoration: none;
  font-size: 0.875rem;
  position: relative;
  overflow: hidden;
}

.btn::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
  transition: var(--transition-normal);
}

.btn:hover::before {
  left: 100%;
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary-600), var(--primary-700));
  color: var(--text-inverse);
  box-shadow: var(--shadow-md);
}

.btn-primary:hover {
  background: linear-gradient(135deg, var(--primary-700), var(--primary-800));
  transform: translateY(-1px);
  box-shadow: var(--shadow-lg);
  color: var(--text-inverse);
}

.btn-outline-primary {
  background: transparent;
  color: var(--primary-600);
  border: 2px solid var(--primary-600);
}

.btn-outline-primary:hover {
  background: var(--primary-600);
  color: var(--text-inverse);
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

.btn-success {
  background: linear-gradient(135deg, var(--secondary-500), var(--secondary-600));
  color: var(--text-inverse);
  box-shadow: var(--shadow-md);
}

.btn-success:hover {
  background: linear-gradient(135deg, var(--secondary-600), var(--secondary-700));
  transform: translateY(-1px);
  box-shadow: var(--shadow-lg);
  color: var(--text-inverse);
}

.btn-outline-secondary {
  background: transparent;
  color: var(--gray-600);
  border: 2px solid var(--gray-300);
}

.btn-outline-secondary:hover {
  background: var(--gray-100);
  border-color: var(--gray-400);
  color: var(--gray-700);
}

.btn-danger {
  background: linear-gradient(135deg, var(--error), #dc2626);
  color: var(--text-inverse);
  box-shadow: var(--shadow-md);
}

.btn-danger:hover {
  background: linear-gradient(135deg, #dc2626, #b91c1c);
  transform: translateY(-1px);
  box-shadow: var(--shadow-lg);
  color: var(--text-inverse);
}

.btn-warning {
  background: linear-gradient(135deg, var(--warning), #d97706);
  color: var(--text-inverse);
  box-shadow: var(--shadow-md);
}

.btn-warning:hover {
  background: linear-gradient(135deg, #d97706, #b45309);
  transform: translateY(-1px);
  box-shadow: var(--shadow-lg);
  color: var(--text-inverse);
}

/* Enhanced Container */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-4);
}

.my-4 {
  margin-top: var(--space-8) !important;
  margin-bottom: var(--space-8) !important;
}

/* Enhanced Typography */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-family-display);
  font-weight: 600;
  line-height: 1.2;
  color: var(--text-primary);
  margin-bottom: var(--space-4);
}

h1 {
  font-size: 2.5rem;
  font-weight: 700;
  background: linear-gradient(135deg, var(--primary-600), var(--accent-600));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: var(--space-6);
  position: relative;
}

h1::after {
  content: '';
  position: absolute;
  bottom: -8px;
  left: 0;
  width: 60px;
  height: 4px;
  background: linear-gradient(135deg, var(--primary-600), var(--accent-600));
  border-radius: var(--radius-full);
}

h2 {
  font-size: 2rem;
  color: var(--text-primary);
  margin-bottom: var(--space-5);
}

h5.card-title {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: var(--space-3);
}

/* Enhanced Cards */
.card {
  background: var(--bg-primary);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-2xl);
  box-shadow: var(--shadow-md);
  transition: var(--transition-normal);
  overflow: hidden;
  position: relative;
}

.card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(135deg, var(--primary-600), var(--accent-600));
  opacity: 0;
  transition: var(--transition-normal);
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-xl);
  border-color: var(--primary-200);
}

.card:hover::before {
  opacity: 1;
}

.card-body {
  padding: var(--space-6);
}

.card-text {
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: var(--space-4);
}

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

/* Enhanced Grid System */
.row {
  display: flex;
  flex-wrap: wrap;
  margin: 0 -0.75rem;
}

.col-12, .col-sm-6, .col-md-6, .col-lg-4 {
  padding: 0 0.75rem;
  margin-bottom: var(--space-6);
}

.col-12 { flex: 0 0 100%; }
.col-sm-6 { flex: 0 0 50%; }
.col-md-6 { flex: 0 0 50%; }
.col-lg-4 { flex: 0 0 33.333333%; }

.g-3 > * {
  padding: 0.75rem;
}

.h-100 {
  height: 100%;
}

/* Enhanced Forms */
.form-control, .form-select {
  padding: 0.75rem 1rem;
  border: 2px solid var(--border-light);
  border-radius: var(--radius-lg);
  font-size: 1rem;
  transition: var(--transition-fast);
  background: var(--bg-primary);
  color: var(--text-primary);
}

.form-control:focus, .form-select:focus {
  outline: none;
  border-color: var(--primary-500);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
  background: var(--bg-primary);
}

.form-label {
  font-weight: 500;
  color: var(--text-primary);
  margin-bottom: var(--space-2);
  display: block;
}

/* Category Circles */
.cat-circle-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
  gap: var(--space-6);
  margin: var(--space-8) 0;
}

.cat-circle {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-decoration: none;
  transition: var(--transition-normal);
  padding: var(--space-4);
  border-radius: var(--radius-2xl);
  background: var(--bg-primary);
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border-light);
}

.cat-circle:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  text-decoration: none;
}

.cat-circle .thumb {
  width: 120px;
  height: 120px;
  border-radius: var(--radius-full);
  overflow: hidden;
  margin-bottom: var(--space-3);
  background: linear-gradient(135deg, var(--primary-100), var(--secondary-100));
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
}

.cat-circle .thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: var(--transition-normal);
}

.cat-circle:hover .thumb img {
  transform: scale(1.1);
}

.cat-circle .placeholder {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--primary-600);
  text-align: center;
  padding: var(--space-2);
}

.cat-circle .label {
  font-weight: 500;
  color: var(--text-primary);
  text-align: center;
  font-size: 0.875rem;
}

/* Product Cards */
.card-img-top {
  height: 200px;
  object-fit: cover;
  transition: var(--transition-normal);
}

.card:hover .card-img-top {
  transform: scale(1.05);
}

/* Order Forms */
.order-form {
  background: var(--bg-secondary);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-xl);
  padding: var(--space-5);
  margin-top: var(--space-4);
  animation: slideDown 0.3s ease-out;
}

@keyframes slideDown {
  from {
    opacity: 0;
    transform: translateY(-10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Utility Classes */
.d-flex { display: flex; }
.flex-wrap { flex-wrap: wrap; }
.flex-column { flex-direction: column; }
.flex-grow-1 { flex-grow: 1; }
.align-items-center { align-items: center; }
.justify-content-center { justify-content: center; }
.gap-2 { gap: var(--space-2); }
.gap-3 { gap: var(--space-3); }
.text-center { text-align: center; }
.mb-1 { margin-bottom: var(--space-1); }
.mb-2 { margin-bottom: var(--space-2); }
.mb-3 { margin-bottom: var(--space-3); }
.mt-2 { margin-top: var(--space-2); }
.mt-4 { margin-top: var(--space-8); }
.me-3 { margin-right: var(--space-3); }
.ms-auto { margin-left: auto; }
.d-inline { display: inline; }
.d-inline-flex { display: inline-flex; }

/* Responsive Design */
@media (max-width: 768px) {
  .container {
    padding: 0 var(--space-3);
  }
  
  h1 {
    font-size: 2rem;
  }
  
  h2 {
    font-size: 1.5rem;
  }
  
  .col-sm-6, .col-md-6, .col-lg-4 {
    flex: 0 0 100%;
  }
  
  .cat-circle-grid {
    grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
    gap: var(--space-4);
  }
  
  .cat-circle .thumb {
    width: 100px;
    height: 100px;
  }
  
  .navbar .d-flex {
    flex-direction: column;
    gap: var(--space-2);
  }
  
  .btn {
    width: 100%;
    justify-content: center;
  }
}

@media (max-width: 576px) {
  .my-4 {
    margin-top: var(--space-4) !important;
    margin-bottom: var(--space-4) !important;
  }
  
  .card-body {
    padding: var(--space-4);
  }
  
  h1 {
    font-size: 1.75rem;
  }
}

/* Loading Animation */
@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}

.loading {
  animation: pulse 2s infinite;
}

/* Smooth Scrolling */
html {
  scroll-behavior: smooth;
}

/* Focus Styles for Accessibility */
.btn:focus,
.form-control:focus,
.form-select:focus {
  outline: 2px solid var(--primary-500);
  outline-offset: 2px;
}

/* Print Styles */
@media print {
  .navbar,
  .btn,
  .order-form {
    display: none !important;
  }
  
  .card {
    box-shadow: none;
    border: 1px solid var(--border-medium);
  }
}

/* Sample Status Styles for User Bookings */
.sample-status-info {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  min-width: 120px;
}

.sample-status {
  padding: 0.25rem 0.5rem;
  border-radius: 12px;
  font-size: 0.75rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  display: inline-block;
}

.sample-pending {
  background: #fef3c7;
  color: #92400e;
}

.sample-collected {
  background: #d1fae5;
  color: #059669;
}

.sample-processing {
  background: #dbeafe;
  color: #1d4ed8;
}

.sample-completed {
  background: #e0e7ff;
  color: #3730a3;
}

.collection-info,
.processing-info,
.completed-info,
.collection-notes {
  margin-top: 0.25rem;
}

.collection-info small {
  color: #059669;
  font-weight: 500;
}

.processing-info small {
  color: #1d4ed8;
  font-style: italic;
}

.completed-info small {
  color: #059669;
  font-weight: 600;
}

.collection-notes small {
  color: #6b7280;
  font-style: italic;
  cursor: help;
}