/* eCRF PWA - Mobile Optimization Styles */
/* Touch-friendly interfaces and responsive layouts */

/* =====================================================
   CSS VARIABLES
   ===================================================== */
:root {
  --touch-target-min: 44px;
  --spacing-xs: 4px;
  --spacing-sm: 8px;
  --spacing-md: 16px;
  --spacing-lg: 24px;
  --spacing-xl: 32px;
  --border-radius: 8px;
  --shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
  --shadow-md: 0 4px 6px rgba(0,0,0,0.1);
  --transition-fast: 150ms ease;
  --transition-normal: 250ms ease;
}

/* =====================================================
   BASE TOUCH OPTIMIZATIONS
   ===================================================== */

/* Prevent text selection on touch */
.no-select {
  -webkit-user-select: none;
  user-select: none;
}

/* Smooth touch scrolling */
.touch-scroll {
  -webkit-overflow-scrolling: touch;
  overflow-y: auto;
}

/* Remove tap highlight on mobile */
* {
  -webkit-tap-highlight-color: transparent;
}

/* Ensure minimum touch target size */
button, 
a, 
input[type="button"],
input[type="submit"],
.touch-target {
  min-height: var(--touch-target-min);
  min-width: var(--touch-target-min);
}

/* Active state for touch feedback */
button:active,
a:active,
.touch-target:active {
  opacity: 0.7;
  transform: scale(0.98);
  transition: var(--transition-fast);
}

/* =====================================================
   RESPONSIVE HEADER
   ===================================================== */

/* Mobile header adjustments */
@media (max-width: 640px) {
  header .max-w-7xl {
    padding-left: var(--spacing-md);
    padding-right: var(--spacing-md);
  }
  
  header h1 {
    font-size: 1.125rem;
  }
  
  /* Hide subtitle on mobile */
  header .hidden.sm\:inline {
    display: none !important;
  }
  
  /* Stack auth section on very small screens */
  #auth-section {
    flex-wrap: wrap;
    justify-content: flex-end;
  }
  
  #auth-section > * {
    margin: 2px;
  }
}

/* =====================================================
   MOBILE NAVIGATION
   ===================================================== */

/* Bottom navigation bar for mobile */
.mobile-nav {
  display: none;
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background: white;
  border-top: 1px solid #e5e7eb;
  padding: var(--spacing-sm) 0;
  padding-bottom: max(var(--spacing-sm), env(safe-area-inset-bottom));
  z-index: 50;
  box-shadow: 0 -2px 10px rgba(0,0,0,0.1);
}

@media (max-width: 768px) {
  .mobile-nav {
    display: flex;
    justify-content: space-around;
    align-items: center;
  }
  
  /* Add padding to main content to account for bottom nav */
  main {
    padding-bottom: 80px !important;
  }
}

.mobile-nav-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: var(--spacing-sm) var(--spacing-md);
  color: #6b7280;
  text-decoration: none;
  border-radius: var(--border-radius);
  transition: var(--transition-fast);
  min-width: 64px;
}

.mobile-nav-item.active {
  color: #2563eb;
  background: #eff6ff;
}

.mobile-nav-item i {
  font-size: 1.25rem;
  margin-bottom: 2px;
}

.mobile-nav-item span {
  font-size: 0.625rem;
  font-weight: 500;
}

/* =====================================================
   RESPONSIVE CARDS
   ===================================================== */

/* Card layouts */
.card-grid {
  display: grid;
  gap: var(--spacing-md);
}

@media (min-width: 640px) {
  .card-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .card-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

/* Mobile card styles */
.mobile-card {
  background: white;
  border-radius: var(--border-radius);
  box-shadow: var(--shadow-sm);
  padding: var(--spacing-md);
  transition: var(--transition-normal);
}

.mobile-card:active {
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

/* =====================================================
   RESPONSIVE TABLES
   ===================================================== */

/* Mobile table scrolling */
.table-container {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  margin: 0 calc(-1 * var(--spacing-md));
  padding: 0 var(--spacing-md);
}

@media (max-width: 768px) {
  /* Card-style table on mobile */
  .responsive-table {
    display: block;
  }
  
  .responsive-table thead {
    display: none;
  }
  
  .responsive-table tbody {
    display: block;
  }
  
  .responsive-table tr {
    display: block;
    background: white;
    margin-bottom: var(--spacing-sm);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-sm);
    padding: var(--spacing-md);
  }
  
  .responsive-table td {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-sm) 0;
    border-bottom: 1px solid #f3f4f6;
  }
  
  .responsive-table td:last-child {
    border-bottom: none;
  }
  
  .responsive-table td::before {
    content: attr(data-label);
    font-weight: 600;
    color: #6b7280;
    font-size: 0.75rem;
    text-transform: uppercase;
  }
}

/* =====================================================
   MOBILE FORMS
   ===================================================== */

/* Touch-friendly form controls */
input[type="text"],
input[type="email"],
input[type="password"],
input[type="number"],
input[type="date"],
input[type="time"],
select,
textarea {
  font-size: 16px; /* Prevents iOS zoom on focus */
  padding: 12px 16px;
  border-radius: var(--border-radius);
  border: 1px solid #d1d5db;
  width: 100%;
  transition: var(--transition-fast);
}

input:focus,
select:focus,
textarea:focus {
  outline: none;
  border-color: #2563eb;
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

/* Mobile form layout */
@media (max-width: 640px) {
  .form-row {
    flex-direction: column;
  }
  
  .form-row > * {
    width: 100% !important;
    margin-bottom: var(--spacing-md);
  }
}

/* Large touch-friendly buttons */
.btn-touch {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 14px 24px;
  font-size: 1rem;
  font-weight: 600;
  border-radius: var(--border-radius);
  transition: var(--transition-fast);
  min-height: 48px;
}

.btn-touch-primary {
  background: #2563eb;
  color: white;
}

.btn-touch-primary:active {
  background: #1d4ed8;
}

.btn-touch-secondary {
  background: #f3f4f6;
  color: #374151;
}

.btn-touch-secondary:active {
  background: #e5e7eb;
}

.btn-touch-danger {
  background: #dc2626;
  color: white;
}

.btn-touch-danger:active {
  background: #b91c1c;
}

/* Full-width button on mobile */
@media (max-width: 640px) {
  .btn-mobile-full {
    width: 100%;
  }
}

/* =====================================================
   MOBILE MODALS
   ===================================================== */

/* Full-screen modal on mobile */
@media (max-width: 640px) {
  .modal-content {
    position: fixed !important;
    top: 0 !important;
    left: 0 !important;
    right: 0 !important;
    bottom: 0 !important;
    max-width: 100% !important;
    max-height: 100% !important;
    margin: 0 !important;
    border-radius: 0 !important;
    overflow-y: auto;
  }
  
  .modal-header {
    position: sticky;
    top: 0;
    z-index: 10;
    background: inherit;
    padding-top: max(16px, env(safe-area-inset-top));
  }
  
  .modal-footer {
    position: sticky;
    bottom: 0;
    background: white;
    padding-bottom: max(16px, env(safe-area-inset-bottom));
    border-top: 1px solid #e5e7eb;
  }
}

/* =====================================================
   SWIPE ACTIONS
   ===================================================== */

.swipe-container {
  position: relative;
  overflow: hidden;
}

.swipe-content {
  transition: transform var(--transition-normal);
}

.swipe-actions {
  position: absolute;
  top: 0;
  right: 0;
  bottom: 0;
  display: flex;
  align-items: stretch;
}

.swipe-action {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 80px;
  color: white;
  font-weight: 600;
}

.swipe-action-edit {
  background: #2563eb;
}

.swipe-action-delete {
  background: #dc2626;
}

/* =====================================================
   PULL TO REFRESH
   ===================================================== */

.pull-to-refresh {
  position: relative;
}

.pull-to-refresh-indicator {
  position: absolute;
  top: -50px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  background: white;
  border-radius: 50%;
  box-shadow: var(--shadow-md);
  opacity: 0;
  transition: var(--transition-normal);
}

.pull-to-refresh.pulling .pull-to-refresh-indicator {
  opacity: 1;
  top: 10px;
}

.pull-to-refresh.refreshing .pull-to-refresh-indicator i {
  animation: spin 1s linear infinite;
}

@keyframes spin {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

/* =====================================================
   FLOATING ACTION BUTTON (FAB)
   ===================================================== */

.fab {
  position: fixed;
  bottom: 80px; /* Above mobile nav */
  right: 16px;
  width: 56px;
  height: 56px;
  border-radius: 28px;
  background: #2563eb;
  color: white;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 12px rgba(37, 99, 235, 0.4);
  transition: var(--transition-normal);
  z-index: 40;
}

.fab:active {
  transform: scale(0.95);
  box-shadow: 0 2px 8px rgba(37, 99, 235, 0.4);
}

.fab i {
  font-size: 1.5rem;
}

@media (min-width: 769px) {
  .fab {
    bottom: 24px;
    right: 24px;
  }
}

/* =====================================================
   STATUS BAR SAFE AREA
   ===================================================== */

/* iOS safe area support */
@supports (padding-top: env(safe-area-inset-top)) {
  header {
    padding-top: env(safe-area-inset-top);
  }
  
  .mobile-nav {
    padding-bottom: max(8px, env(safe-area-inset-bottom));
  }
}

/* =====================================================
   TOAST NOTIFICATIONS (Mobile optimized)
   ===================================================== */

#toast-container {
  position: fixed;
  bottom: 90px; /* Above mobile nav */
  left: 16px;
  right: 16px;
  z-index: 100;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

@media (min-width: 769px) {
  #toast-container {
    bottom: 24px;
    left: auto;
    right: 24px;
    width: 360px;
  }
}

/* =====================================================
   LOADING STATES
   ===================================================== */

.skeleton {
  background: linear-gradient(
    90deg,
    #f0f0f0 25%,
    #e0e0e0 50%,
    #f0f0f0 75%
  );
  background-size: 200% 100%;
  animation: skeleton-loading 1.5s infinite;
  border-radius: 4px;
}

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

.skeleton-text {
  height: 16px;
  margin-bottom: 8px;
}

.skeleton-title {
  height: 24px;
  width: 60%;
  margin-bottom: 12px;
}

.skeleton-card {
  height: 120px;
  margin-bottom: 16px;
}

/* =====================================================
   ACCESSIBILITY
   ===================================================== */

/* High contrast focus indicators */
:focus-visible {
  outline: 3px solid #2563eb;
  outline-offset: 2px;
}

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

/* Dark mode support */
@media (prefers-color-scheme: dark) {
  :root {
    --bg-primary: #1f2937;
    --bg-secondary: #111827;
    --text-primary: #f9fafb;
    --text-secondary: #9ca3af;
    --border-color: #374151;
  }
  
  /* Note: Full dark mode styles would go here */
}

/* =====================================================
   CRF FORM MOBILE OPTIMIZATIONS
   ===================================================== */

/* CRF field groups */
.crf-field-group {
  background: white;
  border-radius: var(--border-radius);
  padding: var(--spacing-md);
  margin-bottom: var(--spacing-md);
  box-shadow: var(--shadow-sm);
}

.crf-field-group-title {
  font-weight: 600;
  color: #374151;
  margin-bottom: var(--spacing-md);
  padding-bottom: var(--spacing-sm);
  border-bottom: 2px solid #e5e7eb;
}

/* Mobile CRF navigation */
.crf-nav-mobile {
  display: none;
  position: fixed;
  bottom: 60px;
  left: 0;
  right: 0;
  background: white;
  border-top: 1px solid #e5e7eb;
  padding: 8px 16px;
  z-index: 45;
}

@media (max-width: 768px) {
  .crf-nav-mobile {
    display: flex;
    justify-content: space-between;
    align-items: center;
  }
}

.crf-nav-button {
  padding: 10px 20px;
  border-radius: var(--border-radius);
  font-weight: 600;
  font-size: 0.875rem;
}

.crf-nav-prev {
  background: #f3f4f6;
  color: #374151;
}

.crf-nav-next {
  background: #2563eb;
  color: white;
}

.crf-nav-save {
  background: #059669;
  color: white;
}

/* Field validation mobile */
.field-error-mobile {
  background: #fef2f2;
  border-left: 4px solid #dc2626;
  padding: 12px;
  margin-top: 8px;
  border-radius: 0 var(--border-radius) var(--border-radius) 0;
  font-size: 0.875rem;
  color: #991b1b;
}

/* =====================================================
   SUBJECT LIST MOBILE
   ===================================================== */

.subject-card-mobile {
  background: white;
  border-radius: var(--border-radius);
  padding: var(--spacing-md);
  margin-bottom: var(--spacing-sm);
  box-shadow: var(--shadow-sm);
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
}

.subject-avatar {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: #eff6ff;
  color: #2563eb;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 1.125rem;
  flex-shrink: 0;
}

.subject-info {
  flex: 1;
  min-width: 0;
}

.subject-id {
  font-weight: 600;
  color: #111827;
}

.subject-meta {
  font-size: 0.75rem;
  color: #6b7280;
  margin-top: 2px;
}

.subject-status {
  flex-shrink: 0;
}

/* =====================================================
   QUERY LIST MOBILE
   ===================================================== */

.query-card-mobile {
  background: white;
  border-radius: var(--border-radius);
  padding: var(--spacing-md);
  margin-bottom: var(--spacing-sm);
  box-shadow: var(--shadow-sm);
  border-left: 4px solid;
}

.query-card-mobile.priority-critical {
  border-left-color: #dc2626;
}

.query-card-mobile.priority-major {
  border-left-color: #f59e0b;
}

.query-card-mobile.priority-minor {
  border-left-color: #3b82f6;
}

.query-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: var(--spacing-sm);
}

.query-text {
  font-size: 0.875rem;
  color: #374151;
  line-height: 1.5;
}

.query-meta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-sm);
  margin-top: var(--spacing-sm);
  font-size: 0.75rem;
  color: #6b7280;
}

/* =====================================================
   LANDSCAPE ORIENTATION
   ===================================================== */

@media (orientation: landscape) and (max-height: 500px) {
  /* Compact header in landscape */
  header .h-16 {
    height: 48px;
  }
  
  /* Hide mobile nav in landscape */
  .mobile-nav {
    display: none;
  }
  
  /* Adjust main content */
  main {
    padding-bottom: 16px !important;
  }
}

/* =====================================================
   PRINT STYLES
   ===================================================== */

@media print {
  .mobile-nav,
  .fab,
  #toast-container,
  .no-print {
    display: none !important;
  }
  
  .print-break-before {
    page-break-before: always;
  }
  
  .print-break-after {
    page-break-after: always;
  }
}