/**
 * Unified Form Component Styles
 * 
 * SINGLE SOURCE OF TRUTH for all form input styling.
 * Replaces all existing form implementations to prevent duplication.
 * Uses design system tokens exclusively.
 */

/* Base Form Input Container */
.infitwin-form {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xs);
  margin-bottom: var(--spacing-md);
  font-family: var(--font-family-primary);
}

/* Form Label */
.infitwin-form__label {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  color: var(--color-text-primary);
  margin-bottom: var(--spacing-xs);
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
}

.infitwin-form__required {
  color: var(--color-error);
  font-weight: var(--font-weight-normal);
}

/* Input Wrapper */
.infitwin-form__input-wrapper {
  position: relative;
  display: flex;
  align-items: center;
  border-radius: var(--spacing-sm);
  transition: all 0.2s ease;
}

/* Base Input Styles */
.infitwin-form__input {
  /* Reset default styles */
  background: none;
  border: none;
  padding: 0;
  margin: 0;
  font: inherit;
  outline: none;
  
  /* Base styling */
  width: 100%;
  font-family: var(--font-family-primary);
  font-size: var(--font-size-base);
  line-height: var(--line-height-normal);
  color: var(--color-text-primary);
  background-color: var(--color-background-card);
  border: 1px solid var(--color-border);
  border-radius: var(--spacing-sm);
  transition: all 0.2s ease;
  
  /* Default size (medium) */
  padding: var(--spacing-sm) var(--spacing-md);
  min-height: 40px;
  
  /* Ensure proper box model */
  box-sizing: border-box;
}

/* Input States */
.infitwin-form__input:hover:not(:disabled) {
  border-color: var(--color-border-dark);
}

.infitwin-form__input:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(107, 70, 193, 0.1);
}

.infitwin-form__input:disabled {
  cursor: not-allowed;
  opacity: 0.6;
  background-color: var(--color-background-secondary);
}

.infitwin-form__input::placeholder {
  color: var(--color-text-muted);
}

/* Form Variants */
/* Default variant - standard bordered input */
.infitwin-form--default .infitwin-form__input {
  /* Already styled above */
}

/* Filled variant - gray background */
.infitwin-form--filled .infitwin-form__input {
  background-color: var(--color-background-secondary);
  border-color: transparent;
}

.infitwin-form--filled .infitwin-form__input:hover:not(:disabled) {
  background-color: var(--color-background-hover);
}

.infitwin-form--filled .infitwin-form__input:focus {
  background-color: var(--color-background-card);
  border-color: var(--color-primary);
}

/* Outlined variant - stronger border */
.infitwin-form--outlined .infitwin-form__input {
  border-width: 2px;
  background-color: transparent;
}

/* Size Variants */
.infitwin-form--small .infitwin-form__input {
  padding: var(--spacing-xs) var(--spacing-sm);
  font-size: var(--font-size-sm);
  min-height: 32px;
}

.infitwin-form--medium .infitwin-form__input {
  padding: var(--spacing-sm) var(--spacing-md);
  font-size: var(--font-size-base);
  min-height: 40px;
}

.infitwin-form--large .infitwin-form__input {
  padding: var(--spacing-md) var(--spacing-lg);
  font-size: var(--font-size-lg);
  min-height: 48px;
}

/* Icons */
.infitwin-form__icon {
  position: absolute;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-secondary);
  pointer-events: none;
  transition: color 0.2s ease;
}

.infitwin-form__icon:first-child {
  left: var(--spacing-md);
}

.infitwin-form__icon:last-child {
  right: var(--spacing-md);
}

/* Adjust padding when icons are present */
.infitwin-form__input-wrapper .infitwin-form__icon:first-child ~ .infitwin-form__input {
  padding-left: calc(var(--spacing-md) * 3);
}

.infitwin-form__input-wrapper .infitwin-form__input ~ .infitwin-form__icon {
  right: var(--spacing-md);
}

.infitwin-form__input-wrapper .infitwin-form__input:has(~ .infitwin-form__icon) {
  padding-right: calc(var(--spacing-md) * 3);
}

/* Password Toggle */
.infitwin-form__password-toggle {
  position: absolute;
  right: var(--spacing-sm);
  background: none;
  border: none;
  cursor: pointer;
  font-size: 1.2rem;
  opacity: 0.5;
  transition: opacity 0.2s;
  padding: var(--spacing-xs);
  border-radius: var(--spacing-xs);
}

.infitwin-form__password-toggle:hover {
  opacity: 0.8;
  background-color: var(--color-background-hover);
}

.infitwin-form__password-toggle:focus {
  outline: 2px solid var(--color-border-focus);
  outline-offset: 2px;
}

/* Ensure password inputs have proper padding */
.infitwin-form__input[type="password"] {
  padding-right: calc(var(--spacing-md) * 3);
}

/* Validation Indicator */
.infitwin-form__validation-indicator {
  position: absolute;
  right: var(--spacing-md);
  display: none;
  width: 16px;
  height: 16px;
}

.infitwin-form--valid .infitwin-form__validation-indicator {
  display: block;
  color: var(--color-success);
}

.infitwin-form--valid .infitwin-form__validation-indicator::after {
  content: '✓';
}

.infitwin-form--invalid .infitwin-form__validation-indicator {
  display: block;
  color: var(--color-error);
}

.infitwin-form--invalid .infitwin-form__validation-indicator::after {
  content: '✕';
}

.infitwin-form--validating .infitwin-form__validation-indicator {
  display: block;
  border: 2px solid var(--color-border);
  border-top-color: var(--color-primary);
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

/* Help Text Container */
.infitwin-form__help-container {
  min-height: var(--font-size-sm);
  margin-top: var(--spacing-xs);
}

.infitwin-form__help-text,
.infitwin-form__error-text,
.infitwin-form__success-text {
  font-size: var(--font-size-sm);
  line-height: var(--line-height-normal);
  display: block;
}

.infitwin-form__help-text {
  color: var(--color-text-secondary);
}

.infitwin-form__error-text {
  color: var(--color-error);
}

.infitwin-form__success-text {
  color: var(--color-success);
}

/* Validation States */
.infitwin-form--valid .infitwin-form__input {
  border-color: var(--color-success);
}

.infitwin-form--valid .infitwin-form__input:focus {
  box-shadow: 0 0 0 3px rgba(16, 185, 129, 0.1);
}

.infitwin-form--invalid .infitwin-form__input {
  border-color: var(--color-error);
}

.infitwin-form--invalid .infitwin-form__input:focus {
  box-shadow: 0 0 0 3px rgba(239, 68, 68, 0.1);
}

/* Form Group */
.infitwin-form-group {
  display: flex;
}

.infitwin-form-group--vertical {
  flex-direction: column;
}

.infitwin-form-group--horizontal {
  flex-direction: row;
  align-items: flex-start;
}

.infitwin-form-group--inline {
  flex-direction: row;
  align-items: center;
  flex-wrap: wrap;
}

/* Form Group Gaps */
.infitwin-form-group--gap-small {
  gap: var(--spacing-sm);
}

.infitwin-form-group--gap-medium {
  gap: var(--spacing-md);
}

.infitwin-form-group--gap-large {
  gap: var(--spacing-lg);
}

/* Horizontal layout adjustments */
.infitwin-form-group--horizontal .infitwin-form {
  flex: 1;
  margin-bottom: 0;
}

.infitwin-form-group--inline .infitwin-form {
  flex: 0 1 auto;
  margin-bottom: 0;
}

/* Responsive Design */
@media (max-width: 768px) {
  .infitwin-form__input {
    min-height: 44px; /* Larger touch targets on mobile */
  }
  
  .infitwin-form--small .infitwin-form__input {
    min-height: 40px;
  }
  
  .infitwin-form-group--horizontal {
    flex-direction: column;
  }
}

/* Accessibility */
@media (prefers-reduced-motion: reduce) {
  .infitwin-form__input,
  .infitwin-form__input-wrapper,
  .infitwin-form__icon,
  .infitwin-form__password-toggle {
    transition: none;
  }
  
  .infitwin-form--validating .infitwin-form__validation-indicator {
    animation: none;
  }
}

/* High contrast mode support */
@media (prefers-contrast: high) {
  .infitwin-form__input {
    border-width: 2px;
  }
  
  .infitwin-form--filled .infitwin-form__input {
    border-color: var(--color-border);
  }
}

/* Print styles */
@media print {
  .infitwin-form__input {
    background: none !important;
    border: 1px solid var(--color-text-primary) !important;
  }
  
  .infitwin-form__password-toggle {
    display: none;
  }
}

/* Animation for validation spinner */
@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}