/* 
 * ustwo Accessibility Microsite - Form Styles
 */

/* Form container */
.form-container {
  position: relative; /* For positioning the loading overlay */
}

/* Form loading overlay */
.form-loading-overlay {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: rgba(255, 255, 255, 0.9);
  display: flex;
  justify-content: center;
  align-items: center;
  z-index: 10;
  border-radius: var(--border-radius-md);
  backdrop-filter: blur(2px);
  opacity: 1;
  transition: opacity 0.3s ease-in-out;
  animation: fadeIn 0.3s ease-in-out;
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

/* Ensure form inputs transition smoothly when disabled/enabled */
.form-control,
button,
input,
textarea,
select,
fieldset {
  transition: opacity 0.3s ease, background-color 0.3s ease, color 0.3s ease;
}

/* Disable form inputs when loading */
.form-control:disabled,
button:disabled,
input:disabled,
textarea:disabled,
select:disabled,
fieldset:disabled {
  opacity: 0.7;
  cursor: not-allowed;
  background-color: var(--color-gray-700);
}

/* Form group */
.form-group {
  margin-bottom: var(--space-6);
}

/* Labels */
.form-group label,
.form-group legend {
  display: block;
  margin-bottom: var(--space-2);
  font-weight: 300;
  color: var(--color-dark);
  font-size: calc(0.875rem + (((1.5 - 0.875) * ((100vw - 320px) / (2048 - 320))) * 10));
}

.form-col label {
  margin-top: 1rem;
}

/* Required field indicator */
.required {
  color: var(--color-error);
  margin-left: var(--space-1);
}

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

/* Form controls */
.form-control {
  display: block;
  width: 100%;
  padding: var(--space-3);
  background-color: var(--color-light);
  border: 2px solid var(--color-gray-300);
  border-radius: var(--border-radius-sm);
  font-size: var(--font-size-base);
  transition: border-color 0.2s ease-in-out, box-shadow 0.2s ease-in-out, opacity 0.3s ease, background-color 0.3s ease;
}

.form-control:focus {
  border-color: var(--focus-ring-color);
  box-shadow: 0 0 0 3px rgba(var(--focus-ring-color-rgb), 0.4);
  outline: none;
}

.form-control::placeholder {
  color: var(--color-gray-500);
}

/* Error state */
.input-error {
  border-color: var(--color-error);
}

.input-error:focus {
  border-color: var(--color-error);
  box-shadow: 0 0 0 3px rgba(var(--color-error-rgb), 0.3);
  outline: none;
}

.error-message {
  color: var(--color-error);
  font-size: var(--font-size-sm);
  margin-top: var(--space-1);
}

/* Error summary */
.error-summary {
  padding: var(--space-4);
  margin-bottom: var(--space-6);
  border: 2px solid var(--color-error);
  background-color: rgba(var(--color-error-rgb), 0.05);
  border-radius: var(--border-radius-sm);
  width: 100%;
  animation: slideDown 0.3s ease-in-out;
}

@keyframes slideDown {
  from {
    opacity: 0;
    transform: translateY(-10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.error-summary h2 {
  margin-top: 0;
  font-size: var(--font-size-lg);
  color: var(--color-error);
}

.error-summary ul {
  margin-bottom: 0;
}

.error-summary a {
  color: var(--color-error);
  text-decoration: underline;
}

.error-summary a:focus {
  outline: 2px solid var(--focus-ring-color);
  outline-offset: 2px;
}

/* Help text */
.form-help {
  margin-top: var(--space-1);
  font-size: var(--font-size-sm);
  color: var(--color-gray-600);
}

/* Checkbox and radio groups */
.checkbox-group,
.radio-group {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  margin-top: var(--space-2);
}

.checkbox-item,
.radio-item {
  display: flex;
  align-items: center;
  margin-right: var(--space-4);
}

.checkbox-item input,
.radio-item input {
  margin-right: var(--space-2);
}

/* Input focus styles */
input[type="checkbox"]:focus,
input[type="radio"]:focus {
  outline: 2px solid var(--focus-ring-color);
  outline-offset: 2px;
}

/* Fieldset */
fieldset {
  border: none;
  padding: 0;
  margin: 0;
}

legend {
  width: 100%;
  padding: 0;
  margin-bottom: var(--space-2);
  font-weight: 600;
}

/* Form actions */
.form-actions {
  margin-top: var(--space-8);
  display: flex;
  gap: var(--space-4);
}

/* Button focus styles */
button:focus,
.button:focus {
  outline: 2px solid var(--focus-ring-color);
  outline-offset: 2px;
}

/* Submit button state transitions */
button[type="submit"],
.button[type="submit"] {
  transition: background-color 0.3s ease, opacity 0.3s ease, transform 0.2s ease;
}

button[type="submit"]:disabled,
.button[type="submit"]:disabled {
  opacity: 0.7;
}

/* Validation cues - checkmark for valid fields */
.form-control:valid:not(.input-error) {
  background-position: right 12px center;
  background-repeat: no-repeat;
  background-size: 16px 16px;
}