/* Main CSS for Maternal Health AI System */

:root {
  --primary-color: #667eea;
  --primary-dark: #5a67d8;
  --secondary-color: #764ba2;
  --accent-color: #8b5cf6;
  --accent-dark: #7c3aed;
  --success-color: #10b981;
  --warning-color: #f59e0b;
  --danger-color: #ef4444;
  --light-color: #ffffff;
  --light-gray: #f8f9fa;
  --medium-gray: #6c757d;
  --dark-color: #2c3e50;
  --body-color: #ffffff;
  --border-radius: 0.5rem;
  --shadow: 0 2px 20px rgba(102, 126, 234, 0.1);
  --shadow-hover: 0 4px 30px rgba(102, 126, 234, 0.15);
}

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

body {
  font-family: 'Poppins', sans-serif;
  background-color: var(--body-color);
  color: var(--dark-color);
  padding-top: 70px;
  font-weight: 400;
  line-height: 1.6;
}

/* Bug Fix #3: Navigation menu alignment improvements */
.navbar {
  background: var(--light-color);
  border-bottom: 1px solid #e9ecef;
  box-shadow: var(--shadow);
  backdrop-filter: blur(10px);
  min-height: 70px;
}

.navbar-brand {
  font-weight: 600;
  color: var(--primary-color) !important;
  font-family: 'Poppins', sans-serif;
  display: flex;
  align-items: center;
  height: 50px;
}

.navbar-nav {
  align-items: center;
  gap: 0.25rem;
}

.navbar-light .navbar-nav .nav-link {
  color: var(--medium-gray) !important;
  font-weight: 500;
  padding: 0.75rem 1rem;
  transition: all 0.3s ease;
  font-family: 'Poppins', sans-serif;
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  white-space: nowrap;
}

.navbar-light .navbar-nav .nav-link:hover,
.navbar-light .navbar-nav .nav-link.active {
  color: var(--primary-color) !important;
  background-color: var(--light-gray);
  border-radius: var(--border-radius);
}

/* Bug Fix #13: Enhanced mobile responsiveness improvements */
@media (max-width: 991.98px) {
  .navbar-nav {
    text-align: center;
    width: 100%;
    padding: 1rem 0;
  }
  
  .navbar-nav .nav-link {
    padding: 0.875rem 1.5rem;
    border-bottom: 1px solid rgba(0,0,0,0.05);
  }
  
  .navbar-nav .nav-link:last-child {
    border-bottom: none;
  }
  
  /* Dashboard mobile improvements */
  .main-content {
    padding: 1rem !important;
  }
  
  .quick-actions-container {
    flex-direction: column;
    gap: 0.5rem;
  }
  
  .quick-action-btn {
    width: 100%;
    justify-content: center;
  }
  
  /* Card improvements for mobile */
  .card {
    margin-bottom: 1rem;
  }
  
  .row {
    margin-left: -0.5rem;
    margin-right: -0.5rem;
  }
  
  .row > * {
    padding-left: 0.5rem;
    padding-right: 0.5rem;
  }
}

@media (max-width: 767.98px) {
  /* Typography adjustments for mobile */
  h1 {
    font-size: 1.5rem;
  }
  
  h2 {
    font-size: 1.3rem;
  }
  
  h3 {
    font-size: 1.2rem;
  }
  
  /* Form improvements for mobile */
  .form-control, .form-select {
    font-size: 16px; /* Prevents zoom on iOS */
    padding: 0.75rem;
  }
  
  .btn {
    padding: 0.75rem 1rem;
    font-size: 0.95rem;
  }
  
  /* Table responsiveness */
  .table-responsive {
    font-size: 0.875rem;
  }
  
  .table th, .table td {
    padding: 0.5rem;
  }
  
  /* Patient cards mobile layout */
  .patient-card {
    margin-bottom: 1rem;
  }
  
  .patient-card .card-body {
    padding: 1rem;
  }
}

@media (max-width: 575.98px) {
  .navbar-brand {
    font-size: 1.1rem;
  }
  
  .navbar-nav .nav-link {
    font-size: 0.95rem;
    padding: 1rem 1.25rem;
  }
  
  /* Sidebar adjustments for very small screens */
  .sidebar {
    position: fixed;
    top: 0;
    left: -100%;
    width: 280px;
    height: 100vh;
    transition: left 0.3s ease;
    z-index: 1050;
  }
  
  .sidebar.show {
    left: 0;
  }
  
  /* Main content full width on mobile */
  .main-content {
    margin-left: 0 !important;
    width: 100% !important;
    padding: 0.75rem !important;
  }
  
  /* Welcome message adjustments */
  .welcome-message {
    font-size: 1.5rem;
    margin-bottom: 0.75rem;
  }
  
  /* Statistics cards mobile layout */
  .stat-card {
    margin-bottom: 1rem;
    text-align: center;
  }
  
  .stat-card .stat-number {
    font-size: 1.75rem;
  }
  
  /* Chart containers mobile optimization */
  .chart-container {
    height: 250px !important;
  }
  
  /* Action buttons stack vertically */
  .btn-group {
    flex-direction: column;
    width: 100%;
  }
  
  .btn-group .btn {
    margin-bottom: 0.25rem;
    border-radius: 0.375rem !important;
  }
  
  /* Search and filter improvements */
  .search-filter-section {
    padding: 0.75rem;
  }
  
  .search-filter-section .row > div {
    margin-bottom: 0.75rem;
  }
}

/* Bug Fix #21: Enhanced navigation accessibility and keyboard support */
/* Focus management and keyboard navigation */
.nav-link:focus,
.btn:focus,
.form-control:focus,
.form-select:focus {
  outline: 2px solid #007bff;
  outline-offset: 2px;
  box-shadow: 0 0 0 0.2rem rgba(0, 123, 255, 0.25);
}

/* Skip to main content link for screen readers */
.skip-link {
  position: absolute;
  top: -40px;
  left: 6px;
  background: #000;
  color: #fff;
  padding: 8px;
  text-decoration: none;
  z-index: 1000;
  border-radius: 4px;
}

.skip-link:focus {
  top: 6px;
}

/* High contrast mode support */
@media (prefers-contrast: high) {
  .nav-link {
    border: 1px solid;
  }
  
  .btn {
    border: 2px solid;
  }
}

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

/* Touch-friendly improvements for all mobile devices */
@media (max-width: 991.98px) {
  /* Larger touch targets */
  .btn, .form-control, .form-select, .nav-link {
    min-height: 44px;
    min-width: 44px;
  }
  
  /* Improved spacing for touch */
  .list-group-item, .dropdown-item {
    padding: 0.75rem 1rem;
  }
  
  /* Accessible font sizes */
  body {
    font-size: 16px;
  }
  
  small, .small {
    font-size: 14px;
  }
  
  /* Enhanced focus indicators for mobile */
  .nav-link:focus,
  .btn:focus {
    outline: 3px solid #007bff;
    outline-offset: 2px;
  }
}

/* ARIA live regions styling */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* Error announcements */
.error-announcement {
  position: absolute;
  left: -10000px;
  width: 1px;
  height: 1px;
  overflow: hidden;
}

/* Enhanced dropdown accessibility */
.dropdown-menu {
  border: 2px solid #dee2e6;
}

.dropdown-item:focus {
  background-color: #007bff;
  color: #fff;
  outline: none;
}

.nav-icon {
  margin-right: 0.5rem;
}

/* Main Content Container */
.main-content {
  padding: 2rem 0 3rem;
  min-height: calc(100vh - 170px);
}

/* Cards */
.card {
  border-radius: var(--border-radius);
  transition: transform 0.2s, box-shadow 0.2s;
  overflow: hidden;
}

.card:hover {
  transform: translateY(-3px);
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1) !important;
}

.card-header {
  border-bottom: 1px solid rgba(0, 0, 0, 0.05);
  font-weight: 600;
}

/* Buttons */
.btn {
  border-radius: var(--border-radius);
  font-weight: 500;
  padding: 0.5rem 1.25rem;
  transition: all 0.2s;
}

.btn-primary {
  background-color: var(--primary-color);
  border-color: var(--primary-color);
}

.btn-primary:hover, .btn-primary:focus {
  background-color: var(--primary-dark);
  border-color: var(--primary-dark);
  box-shadow: 0 3px 8px rgba(78, 115, 223, 0.3);
}

.btn-success {
  background-color: var(--success-color);
  border-color: var(--success-color);
}

.btn-success:hover, .btn-success:focus {
  background-color: #16a575;
  border-color: #16a575;
  box-shadow: 0 3px 8px rgba(28, 200, 138, 0.3);
}

/* Hero Section */
.hero-section {
  padding: 5rem 0;
  background: linear-gradient(135deg, #f8f9fa, #e9ecef);
  position: relative;
  overflow: hidden;
}

.hero-section h1 {
  margin-bottom: 1.5rem;
  font-weight: 700;
  color: var(--primary-dark);
}

/* Features Icons */
.feature-icon {
  width: 80px;
  height: 80px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background-color: rgba(78, 115, 223, 0.1);
  color: var(--primary-color);
}

/* Tables */
.table thead th {
  background-color: rgba(78, 115, 223, 0.05);
  border-top: none;
  font-weight: 600;
  color: var(--dark-color);
}

.table-hover tbody tr:hover {
  background-color: rgba(78, 115, 223, 0.03);
}

/* Badge styling */
.badge.bg-success {
  background-color: var(--success-color) !important;
}

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

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

/* Risk labels */
.risk-high {
  color: var(--danger-color);
}

.risk-medium {
  color: var(--warning-color);
}

.risk-low {
  color: var(--success-color);
}

/* Footer */
footer {
  background-color: #fff;
  padding: 2.5rem 0;
  color: #6c757d;
  border-top: 1px solid rgba(0, 0, 0, 0.05);
}

footer h5 {
  font-weight: 600;
  margin-bottom: 1.25rem;
  color: var(--dark-color);
}

.footer-links {
  list-style: none;
  padding-left: 0;
}

.footer-links li {
  margin-bottom: 0.75rem;
}

.footer-links a {
  color: #6c757d;
  text-decoration: none;
  transition: color 0.15s;
}

.footer-links a:hover {
  color: var(--primary-color);
}

/* Explainability Visualization */
.explanation-viz {
  padding: 1rem 0;
}

.factor-row {
  margin-bottom: 1rem;
}

.factor-bar-container {
  height: 15px;
  background-color: #f1f1f1;
  border-radius: 15px;
  overflow: hidden;
}

.factor-bar {
  height: 15px;
  transition: width 0.5s ease-out;
}

.factor-bar.positive {
  background-color: var(--danger-color);
}

.factor-bar.negative {
  background-color: var(--success-color);
}

.factor-name {
  font-weight: 500;
}

.factor-impact {
  font-weight: 500;
}

.factor-impact.positive {
  color: var(--danger-color);
}

.factor-impact.negative {
  color: var(--success-color);
}

/* Patient form styling */
.patient-form .form-control, 
.patient-form .form-select {
  border-radius: var(--border-radius);
  padding: 0.75rem 1rem;
  border-color: #e0e0e0;
}

.patient-form .form-control:focus,
.patient-form .form-select:focus {
  border-color: var(--primary-color);
  box-shadow: 0 0 0 0.2rem rgba(78, 115, 223, 0.25);
}

.form-label {
  font-weight: 500;
  margin-bottom: 0.5rem;
}

.form-section-title {
  margin-bottom: 1.5rem;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid #e0e0e0;
  color: var(--primary-dark);
}

/* Dashboard specific styles */
.dashboard-header {
  margin-bottom: 2rem;
}

.dashboard-header h1 {
  font-weight: 700;
  color: var(--primary-dark);
}

/* Telugu-specific text */
.telugu-text {
  font-family: 'Noto Sans Telugu', sans-serif;
}

/* Governance page styles */
.governance-card {
  margin-bottom: 2rem;
}

.governance-card .card-header {
  background-color: rgba(78, 115, 223, 0.1);
  font-weight: 600;
}

.metric-card {
  text-align: center;
  padding: 1.5rem;
}

.metric-value {
  font-size: 2.5rem;
  font-weight: 600;
  margin: 1rem 0;
  color: var(--primary-color);
}

.metric-label {
  font-weight: 500;
  color: var(--dark-color);
}

/* Risk assessment form */
.assessment-section {
  margin-bottom: 2rem;
  padding: 1.5rem;
  border-radius: var(--border-radius);
  background-color: #fff;
  border: 1px solid rgba(0, 0, 0, 0.05);
}

.assessment-section-header {
  margin-bottom: 1.5rem;
  color: var(--primary-dark);
}

/* Mobile responsiveness */
@media (max-width: 768px) {
  body {
    padding-top: 56px;
  }
  
  .hero-section {
    padding: 3rem 0;
  }
  
  .display-4 {
    font-size: 2.5rem;
  }
  
  .main-content {
    padding: 1.5rem 0;
  }
  
  .dashboard-header {
    text-align: center;
  }
  
  .dashboard-header .col-md-6:last-child {
    margin-top: 1rem;
    text-align: center;
  }
}