/**
 * Form Pagination Styles
 * Progressive enhancement - forms work without these styles
 */

/* Base state - no JavaScript (graceful degradation) */
.form-section {
  display: block;
  margin-bottom: var(--spacing-lg);
}

/* Enhanced state - with JavaScript */
.js-paginated .form-section {
  display: none;
  opacity: 0;
  transform: translateX(20px);
  transition: opacity 0.3s ease, transform 0.3s ease;
}

.js-paginated .form-section.active {
  display: block;
  opacity: 1;
  transform: translateX(0);
}

/* Progress Indicator */
.form-progress {
  margin-bottom: var(--spacing-xl);
  padding: var(--spacing-lg) 0;
  text-align: center;
}

.form-progress-steps {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: var(--spacing-md);
  position: relative;
}

/* Progress line connector */
.form-progress-steps::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 10%;
  right: 10%;
  height: 2px;
  background: var(--accent);
  z-index: 0;
  transform: translateY(-50%);
}

/* Progress dots */
.form-progress-dot {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  border: 2px solid var(--accent);
  background: var(--dark);
  cursor: pointer;
  transition: all 0.3s ease;
  position: relative;
  z-index: 1;
  padding: 0;
  display: flex;
  align-items: center;
  justify-content: center;
}

.form-progress-dot:hover {
  transform: scale(1.1);
  background: var(--accent);
}

.form-progress-dot.active {
  background: var(--light);
  border-color: var(--light);
}

.form-progress-dot.completed {
  background: var(--light);
  border-color: var(--light);
}

/* Step number styling */
.step-number {
  position: absolute;
  top: 135%;
  left: 50%;
  transform: translate(-50%, -50%);
  color: var(--light);
  font-size: 14px;
  font-weight: bold;
  display: block;
  line-height: 1;
}

.form-progress-dot.active .step-number {
  color: var(--dark);
}

.form-progress-dot.completed .step-number {
  display: none;
}

/* Step tick styling */
.step-tick {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  color: var(--dark);
  font-size: 16px;
  font-weight: bold;
  display: none;
  line-height: 1;
}

.form-progress-dot.completed .step-tick {
  display: block;
}

/* Disabled/inaccessible dots */
.form-progress-dot:disabled,
.form-progress-dot:not(.accessible) {
  opacity: 0.5;
  cursor: not-allowed;
  border-color: var(--text-muted);
}

.form-progress-dot:disabled:hover,
.form-progress-dot:not(.accessible):hover {
  transform: none;
  background: var(--dark);
}

.form-progress-dot:disabled .step-number,
.form-progress-dot:not(.accessible) .step-number {
  color: var(--text-muted);
}

/* Step Navigation */
.form-step-navigation {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: var(--spacing-xl);
  padding-top: var(--spacing-lg);
  border-top: 1px solid var(--accent);
  position: relative;
}

.form-nav-btn {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-xs);
  padding: var(--spacing-sm) var(--spacing-lg);
  background: var(--light);
  color: var(--dark);
  border: 2px solid var(--light);
  border-radius: var(--radius-sm);
  font-size: var(--font-size-base);
  font-weight: 600;
  cursor: pointer;
  transition: all 0.3s ease;
  min-height: 44px; /* Touch target size */
}

.form-nav-btn:hover {
  background: transparent;
  color: var(--light);
  transform: translateY(-2px);
}

.form-nav-btn:active {
  transform: translateY(0);
}

.nav-arrow {
  font-size: 1.2em;
  transition: transform 0.3s ease;
}

.form-nav-prev:hover .nav-arrow {
  transform: translateX(-4px);
}

.form-nav-next:hover .nav-arrow {
  transform: translateX(4px);
}

.form-nav-next {
  margin-left: auto;
}

/* Swipe hint for mobile */
.form-swipe-hint {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  font-size: var(--font-size-sm);
  color: var(--text-muted);
  opacity: 0;
  animation: fadeInOut 3s ease-in-out;
  pointer-events: none;
}

@keyframes fadeInOut {
  0%, 100% { opacity: 0; }
  50% { opacity: 0.7; }
}

/* Show swipe hint on first load */
.js-paginated .form-step:first-child .form-swipe-hint {
  animation-delay: 1s;
}

/* Mobile-specific styles */
@media (max-width: 768px) {
  .form-progress-steps {
    gap: var(--spacing-sm);
  }
  
  .form-progress-steps::before {
    left: 20%;
    right: 20%;
  }
  
  .form-step-navigation {
    flex-wrap: wrap;
    gap: var(--spacing-sm);
  }
  
  .form-nav-btn {
    flex: 1;
    justify-content: center;
    min-width: 120px;
  }
  
  /* Stack buttons on very small screens */
  @media (max-width: 480px) {
    .form-nav-btn {
      width: 100%;
    }
  }
  
  /* Enhanced touch states */
  .form-nav-btn:active {
    background: var(--accent);
    border-color: var(--accent);
  }
  
  /* Larger touch targets on mobile */
  .form-progress-dot {
    width: 36px;
    height: 36px;
  }
  
  .step-number {
    font-size: 16px;
  }
  
  .step-tick {
    font-size: 18px;
  }
}

/* Reduced motion preference */
@media (prefers-reduced-motion: reduce) {
  .js-paginated .form-section,
  .form-progress-dot,
  .form-nav-btn,
  .nav-arrow {
    transition: none;
  }
  
  .form-swipe-hint {
    animation: none;
    opacity: 0.7;
  }
}

/* High contrast mode support */
@media (prefers-contrast: high) {
  .form-progress-dot {
    border-width: 3px;
  }
  
  .form-nav-btn {
    border-width: 3px;
    font-weight: 700;
  }
}

/* Print styles - show all sections */
@media print {
  .form-section {
    display: block !important;
    opacity: 1 !important;
    transform: none !important;
    page-break-inside: avoid;
  }
  
  .form-progress,
  .form-step-navigation {
    display: none !important;
  }
}

/* Loading state */
.js-paginated.form-loading {
  opacity: 0.6;
  pointer-events: none;
}

/* Error highlighting */
.form-section.has-error {
  animation: shake 0.3s ease-in-out;
}

@keyframes shake {
  0%, 100% { transform: translateX(0); }
  25% { transform: translateX(-10px); }
  75% { transform: translateX(10px); }
}

/* Focus styles for accessibility */
.form-progress-dot:focus,
.form-nav-btn:focus {
  outline: 2px solid var(--light);
  outline-offset: 2px;
}

/* Ensure submit button stays visible on last step */
.js-paginated .form-actions {
  display: none;
}

.js-paginated .form-section:last-of-type + .form-actions,
.js-paginated .form-section.active ~ .form-actions {
  display: flex;
}