/* Mobile-First CSS Framework for Family History Portal */

/* Base Mobile Styles (320px and up) */
:root {
  /* Mobile-optimized spacing */
  --mobile-padding: 16px;
  --mobile-margin: 12px;
  --mobile-border-radius: 8px;
  
  /* Touch-friendly sizes */
  --touch-target-min: 44px;
  --button-height: 48px;
  --input-height: 52px;
  
  /* Mobile typography */
  --mobile-font-size-xs: 12px;
  --mobile-font-size-sm: 14px;
  --mobile-font-size-base: 16px;
  --mobile-font-size-lg: 18px;
  --mobile-font-size-xl: 20px;
  --mobile-font-size-2xl: 24px;
  --mobile-font-size-3xl: 28px;
  
  /* Mobile colors */
  --mobile-primary: #2E8B57;
  --mobile-primary-dark: #1F5F3F;
  --mobile-secondary: #4A90E2;
  --mobile-success: #27AE60;
  --mobile-warning: #F39C12;
  --mobile-error: #E74C3C;
  --mobile-info: #3498DB;
  
  /* Mobile backgrounds */
  --mobile-bg-primary: #FFFFFF;
  --mobile-bg-secondary: #F8F9FA;
  --mobile-bg-dark: #343A40;
  --mobile-bg-overlay: rgba(0, 0, 0, 0.5);
  
  /* Mobile shadows */
  --mobile-shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.12);
  --mobile-shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
  --mobile-shadow-lg: 0 8px 25px rgba(0, 0, 0, 0.15);
  
  /* Mobile transitions */
  --mobile-transition: all 0.3s ease;
  --mobile-transition-fast: all 0.15s ease;
}

/* Mobile-first reset and base styles */
* {
  box-sizing: border-box;
  -webkit-tap-highlight-color: transparent;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  font-size: var(--mobile-font-size-base);
  line-height: 1.5;
  color: #333;
  background-color: var(--mobile-bg-primary);
  margin: 0;
  padding: 0;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Mobile container */
.mobile-container {
  width: 100%;
  max-width: 100vw;
  padding: 0 var(--mobile-padding);
  margin: 0 auto;
}

/* Mobile navigation */
.mobile-nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  background: var(--mobile-bg-primary);
  border-bottom: 1px solid #E9ECEF;
  z-index: 1000;
  padding: 12px var(--mobile-padding);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}

.mobile-nav-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: 100%;
}

.mobile-nav-brand {
  font-size: var(--mobile-font-size-lg);
  font-weight: 600;
  color: var(--mobile-primary);
  text-decoration: none;
}

.mobile-nav-toggle {
  background: none;
  border: none;
  font-size: 24px;
  cursor: pointer;
  padding: 8px;
  min-width: var(--touch-target-min);
  min-height: var(--touch-target-min);
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--mobile-border-radius);
  transition: var(--mobile-transition-fast);
}

.mobile-nav-toggle:hover,
.mobile-nav-toggle:focus {
  background: rgba(0, 0, 0, 0.05);
}

/* Mobile menu overlay */
.mobile-menu-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--mobile-bg-overlay);
  z-index: 1001;
  opacity: 0;
  visibility: hidden;
  transition: var(--mobile-transition);
}

.mobile-menu-overlay.active {
  opacity: 1;
  visibility: visible;
}

/* Mobile menu */
.mobile-menu {
  position: fixed;
  top: 0;
  right: 0;
  bottom: 0;
  width: 280px;
  max-width: 85vw;
  background: var(--mobile-bg-primary);
  z-index: 1002;
  transform: translateX(100%);
  transition: var(--mobile-transition);
  display: flex;
  flex-direction: column;
  box-shadow: var(--mobile-shadow-lg);
}

.mobile-menu.active {
  transform: translateX(0);
}

.mobile-menu-header {
  padding: var(--mobile-padding);
  border-bottom: 1px solid #E9ECEF;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.mobile-menu-close {
  background: none;
  border: none;
  font-size: 24px;
  cursor: pointer;
  padding: 8px;
  min-width: var(--touch-target-min);
  min-height: var(--touch-target-min);
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--mobile-border-radius);
}

.mobile-menu-content {
  flex: 1;
  overflow-y: auto;
  padding: var(--mobile-padding);
}

.mobile-menu-item {
  display: block;
  padding: 12px 16px;
  color: #333;
  text-decoration: none;
  border-radius: var(--mobile-border-radius);
  margin-bottom: 4px;
  font-weight: 500;
  transition: var(--mobile-transition-fast);
  min-height: var(--touch-target-min);
  display: flex;
  align-items: center;
}

.mobile-menu-item:hover,
.mobile-menu-item:focus {
  background: rgba(46, 139, 87, 0.1);
  color: var(--mobile-primary);
}

.mobile-menu-item-icon {
  margin-right: 12px;
  font-size: 18px;
  width: 24px;
  text-align: center;
}

/* Mobile content spacing */
.mobile-content {
  margin-top: 80px; /* Account for fixed nav */
  min-height: calc(100vh - 80px);
  padding-bottom: 80px; /* Account for bottom nav if present */
}

/* Mobile buttons */
.mobile-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 24px;
  font-size: var(--mobile-font-size-base);
  font-weight: 500;
  text-align: center;
  text-decoration: none;
  border: none;
  border-radius: var(--mobile-border-radius);
  cursor: pointer;
  transition: var(--mobile-transition);
  min-height: var(--button-height);
  min-width: var(--touch-target-min);
  position: relative;
  overflow: hidden;
  -webkit-appearance: none;
  user-select: none;
}

.mobile-btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

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

.mobile-btn-primary:hover:not(:disabled) {
  background: var(--mobile-primary-dark);
  transform: translateY(-1px);
  box-shadow: var(--mobile-shadow-md);
}

.mobile-btn-secondary {
  background: var(--mobile-secondary);
  color: white;
}

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

.mobile-btn-outline:hover:not(:disabled) {
  background: var(--mobile-primary);
  color: white;
}

.mobile-btn-full {
  width: 100%;
}

.mobile-btn-large {
  padding: 16px 32px;
  font-size: var(--mobile-font-size-lg);
  min-height: 56px;
}

.mobile-btn-small {
  padding: 8px 16px;
  font-size: var(--mobile-font-size-sm);
  min-height: 36px;
}

/* Mobile forms */
.mobile-form {
  width: 100%;
  max-width: 100%;
}

.mobile-form-group {
  margin-bottom: var(--mobile-margin);
}

.mobile-form-label {
  display: block;
  font-weight: 500;
  margin-bottom: 6px;
  color: #333;
  font-size: var(--mobile-font-size-sm);
}

.mobile-form-input {
  width: 100%;
  padding: 12px 16px;
  font-size: var(--mobile-font-size-base);
  border: 2px solid #E9ECEF;
  border-radius: var(--mobile-border-radius);
  background: white;
  transition: var(--mobile-transition-fast);
  min-height: var(--input-height);
  -webkit-appearance: none;
  appearance: none;
}

.mobile-form-input:focus {
  outline: none;
  border-color: var(--mobile-primary);
  box-shadow: 0 0 0 3px rgba(46, 139, 87, 0.1);
}

.mobile-form-input::placeholder {
  color: #999;
}

.mobile-form-textarea {
  min-height: 120px;
  resize: vertical;
}

.mobile-form-select {
  background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 20 20'%3e%3cpath stroke='%236b7280' stroke-linecap='round' stroke-linejoin='round' stroke-width='1.5' d='M6 8l4 4 4-4'/%3e%3c/svg%3e");
  background-position: right 12px center;
  background-repeat: no-repeat;
  background-size: 16px;
  padding-right: 48px;
}

/* Mobile cards */
.mobile-card {
  background: white;
  border-radius: var(--mobile-border-radius);
  box-shadow: var(--mobile-shadow-sm);
  margin-bottom: var(--mobile-margin);
  overflow: hidden;
  border: 1px solid #E9ECEF;
}

.mobile-card-header {
  padding: var(--mobile-padding);
  border-bottom: 1px solid #E9ECEF;
  background: var(--mobile-bg-secondary);
}

.mobile-card-title {
  margin: 0;
  font-size: var(--mobile-font-size-lg);
  font-weight: 600;
  color: #333;
}

.mobile-card-content {
  padding: var(--mobile-padding);
}

.mobile-card-footer {
  padding: var(--mobile-padding);
  border-top: 1px solid #E9ECEF;
  background: var(--mobile-bg-secondary);
}

/* Mobile grid system */
.mobile-grid {
  display: grid;
  gap: var(--mobile-margin);
  width: 100%;
}

.mobile-grid-1 { grid-template-columns: 1fr; }
.mobile-grid-2 { grid-template-columns: repeat(2, 1fr); }
.mobile-grid-3 { grid-template-columns: repeat(3, 1fr); }

/* Mobile utilities */
.mobile-text-center { text-align: center; }
.mobile-text-left { text-align: left; }
.mobile-text-right { text-align: right; }

.mobile-hidden { display: none !important; }
.mobile-visible { display: block !important; }

.mobile-mt-0 { margin-top: 0; }
.mobile-mt-1 { margin-top: 8px; }
.mobile-mt-2 { margin-top: 16px; }
.mobile-mt-3 { margin-top: 24px; }
.mobile-mt-4 { margin-top: 32px; }

.mobile-mb-0 { margin-bottom: 0; }
.mobile-mb-1 { margin-bottom: 8px; }
.mobile-mb-2 { margin-bottom: 16px; }
.mobile-mb-3 { margin-bottom: 24px; }
.mobile-mb-4 { margin-bottom: 32px; }

.mobile-p-0 { padding: 0; }
.mobile-p-1 { padding: 8px; }
.mobile-p-2 { padding: 16px; }
.mobile-p-3 { padding: 24px; }
.mobile-p-4 { padding: 32px; }

/* Mobile bottom navigation */
.mobile-bottom-nav {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background: white;
  border-top: 1px solid #E9ECEF;
  z-index: 1000;
  padding: 8px 0;
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}

.mobile-bottom-nav-content {
  display: flex;
  justify-content: space-around;
  align-items: center;
  max-width: 100%;
}

.mobile-bottom-nav-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-decoration: none;
  color: #666;
  font-size: var(--mobile-font-size-xs);
  padding: 8px 12px;
  border-radius: var(--mobile-border-radius);
  transition: var(--mobile-transition-fast);
  min-width: var(--touch-target-min);
  min-height: var(--touch-target-min);
  justify-content: center;
}

.mobile-bottom-nav-item:hover,
.mobile-bottom-nav-item.active {
  color: var(--mobile-primary);
}

.mobile-bottom-nav-icon {
  font-size: 20px;
  margin-bottom: 2px;
}

/* Mobile gestures and touch */
.mobile-swipeable {
  touch-action: pan-y;
  user-select: none;
}

.mobile-no-scroll {
  overflow: hidden;
  position: fixed;
  width: 100%;
}

/* Mobile loading states */
.mobile-loading {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
}

.mobile-spinner {
  width: 20px;
  height: 20px;
  border: 2px solid #E9ECEF;
  border-top: 2px solid var(--mobile-primary);
  border-radius: 50%;
  animation: mobile-spin 1s linear infinite;
}

@keyframes mobile-spin {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

/* Mobile alerts and notifications */
.mobile-alert {
  padding: 12px 16px;
  border-radius: var(--mobile-border-radius);
  margin-bottom: var(--mobile-margin);
  border-left: 4px solid;
}

.mobile-alert-success {
  background: rgba(39, 174, 96, 0.1);
  border-color: var(--mobile-success);
  color: #155724;
}

.mobile-alert-warning {
  background: rgba(243, 156, 18, 0.1);
  border-color: var(--mobile-warning);
  color: #856404;
}

.mobile-alert-error {
  background: rgba(231, 76, 60, 0.1);
  border-color: var(--mobile-error);
  color: #721c24;
}

.mobile-alert-info {
  background: rgba(52, 152, 219, 0.1);
  border-color: var(--mobile-info);
  color: #0c5460;
}

/* Mobile modals */
.mobile-modal {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--mobile-bg-overlay);
  z-index: 2000;
  display: flex;
  align-items: flex-end;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transition: var(--mobile-transition);
}

.mobile-modal.active {
  opacity: 1;
  visibility: visible;
}

.mobile-modal-content {
  background: white;
  width: 100%;
  max-width: 100vw;
  max-height: 90vh;
  border-radius: 16px 16px 0 0;
  transform: translateY(100%);
  transition: var(--mobile-transition);
  overflow: hidden;
}

.mobile-modal.active .mobile-modal-content {
  transform: translateY(0);
}

.mobile-modal-header {
  padding: var(--mobile-padding);
  border-bottom: 1px solid #E9ECEF;
  display: flex;
  align-items: center;
  justify-content: space-between;
  position: relative;
}

.mobile-modal-header::before {
  content: '';
  position: absolute;
  top: 8px;
  left: 50%;
  transform: translateX(-50%);
  width: 36px;
  height: 4px;
  background: #E9ECEF;
  border-radius: 2px;
}

.mobile-modal-title {
  margin: 0;
  font-size: var(--mobile-font-size-lg);
  font-weight: 600;
}

.mobile-modal-close {
  background: none;
  border: none;
  font-size: 24px;
  cursor: pointer;
  padding: 8px;
  min-width: var(--touch-target-min);
  min-height: var(--touch-target-min);
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--mobile-border-radius);
}

.mobile-modal-body {
  padding: var(--mobile-padding);
  max-height: calc(90vh - 120px);
  overflow-y: auto;
}

/* Mobile camera and media */
.mobile-camera-container {
  position: relative;
  width: 100%;
  aspect-ratio: 4/3;
  background: #000;
  border-radius: var(--mobile-border-radius);
  overflow: hidden;
}

.mobile-camera-video {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.mobile-camera-overlay {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  display: flex;
  align-items: flex-end;
  justify-content: center;
  padding: var(--mobile-padding);
  background: linear-gradient(transparent, rgba(0, 0, 0, 0.3));
}

.mobile-camera-capture {
  width: 70px;
  height: 70px;
  border-radius: 50%;
  background: white;
  border: 4px solid rgba(255, 255, 255, 0.3);
  cursor: pointer;
  transition: var(--mobile-transition-fast);
}

.mobile-camera-capture:active {
  transform: scale(0.95);
}

/* Responsive breakpoints */
@media (min-width: 480px) {
  .mobile-container {
    padding: 0 24px;
  }
  
  .mobile-grid-sm-2 { grid-template-columns: repeat(2, 1fr); }
  .mobile-grid-sm-3 { grid-template-columns: repeat(3, 1fr); }
  .mobile-grid-sm-4 { grid-template-columns: repeat(4, 1fr); }
}

@media (min-width: 768px) {
  .mobile-hidden-md { display: none !important; }
  .mobile-visible-md { display: block !important; }
  
  .mobile-grid-md-2 { grid-template-columns: repeat(2, 1fr); }
  .mobile-grid-md-3 { grid-template-columns: repeat(3, 1fr); }
  .mobile-grid-md-4 { grid-template-columns: repeat(4, 1fr); }
  
  .mobile-modal {
    align-items: center;
  }
  
  .mobile-modal-content {
    width: 90%;
    max-width: 500px;
    max-height: 80vh;
    border-radius: 16px;
    transform: scale(0.9);
  }
  
  .mobile-modal.active .mobile-modal-content {
    transform: scale(1);
  }
  
  .mobile-bottom-nav {
    display: none;
  }
  
  .mobile-content {
    padding-bottom: 0;
  }
}

@media (min-width: 1024px) {
  .mobile-hidden-lg { display: none !important; }
  .mobile-visible-lg { display: block !important; }
  
  .mobile-grid-lg-2 { grid-template-columns: repeat(2, 1fr); }
  .mobile-grid-lg-3 { grid-template-columns: repeat(3, 1fr); }
  .mobile-grid-lg-4 { grid-template-columns: repeat(4, 1fr); }
  .mobile-grid-lg-5 { grid-template-columns: repeat(5, 1fr); }
  .mobile-grid-lg-6 { grid-template-columns: repeat(6, 1fr); }
}

/* Dark mode support */
@media (prefers-color-scheme: dark) {
  :root {
    --mobile-bg-primary: #1a1a1a;
    --mobile-bg-secondary: #2d2d2d;
    --mobile-bg-dark: #000000;
  }
  
  body {
    background-color: var(--mobile-bg-primary);
    color: #ffffff;
  }
  
  .mobile-nav,
  .mobile-menu,
  .mobile-card,
  .mobile-bottom-nav {
    background: var(--mobile-bg-primary);
    border-color: #404040;
  }
  
  .mobile-form-input {
    background: var(--mobile-bg-secondary);
    border-color: #404040;
    color: #ffffff;
  }
}

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

/* High contrast support */
@media (prefers-contrast: high) {
  .mobile-btn,
  .mobile-form-input,
  .mobile-card {
    border-width: 2px;
  }
}