/* ==========================================================================
   Form Element Styles

   Styles for text inputs, dropdowns, textareas, submit buttons,
   focus states, and validation states (error/success).

   Uses the project color palette:
   - Primary Red:   #D93025 (CTAs, accents)
   - Dark Red:      #B71C1C (Hover states)
   - Navy Blue:     #1A237E (Headers, trust elements)
   - White:         #FFFFFF (Backgrounds)
   - Light Gray:    #F5F5F5 (Section backgrounds)
   - Dark Gray:     #333333 (Body text)
   - Medium Gray:   #666666 (Secondary text)

   Typography:
   - Body: 'Open Sans', sans-serif
   ========================================================================== */

/* --------------------------------------------------------------------------
   CSS Custom Properties (for form elements)
   -------------------------------------------------------------------------- */
:root {
  /* Colors */
  --form-primary: #D93025;
  --form-primary-dark: #B71C1C;
  --form-text: #333333;
  --form-text-secondary: #666666;
  --form-border: #CCCCCC;
  --form-border-focus: #1A237E;
  --form-background: #FFFFFF;
  --form-background-disabled: #F5F5F5;

  /* Validation colors */
  --form-error: #D32F2F;
  --form-error-light: #FFEBEE;
  --form-success: #2E7D32;
  --form-success-light: #E8F5E9;

  /* Sizing */
  --form-border-radius: 4px;
  --form-padding: 12px 16px;
  --form-font-size: 16px;
  --form-line-height: 1.5;

  /* Transitions */
  --form-transition: all 0.2s ease-in-out;
}

/* --------------------------------------------------------------------------
   Base Form Styles
   -------------------------------------------------------------------------- */
.form-group {
  margin-bottom: 1.5rem;
}

.form-label {
  display: block;
  margin-bottom: 0.5rem;
  font-family: 'Open Sans', sans-serif;
  font-size: 14px;
  font-weight: 600;
  color: var(--form-text);
}

.form-label--required::after {
  content: ' *';
  color: var(--form-error);
}

.form-hint {
  display: block;
  margin-top: 0.25rem;
  font-size: 13px;
  color: var(--form-text-secondary);
}

/* --------------------------------------------------------------------------
   Text Inputs
   -------------------------------------------------------------------------- */
.form-input {
  display: block;
  width: 100%;
  padding: var(--form-padding);
  font-family: 'Open Sans', sans-serif;
  font-size: var(--form-font-size);
  line-height: var(--form-line-height);
  color: var(--form-text);
  background-color: var(--form-background);
  border: 1px solid var(--form-border);
  border-radius: var(--form-border-radius);
  transition: var(--form-transition);
  box-sizing: border-box;
}

.form-input::placeholder {
  color: var(--form-text-secondary);
  opacity: 0.7;
}

/* Input hover state */
.form-input:hover:not(:disabled):not(:focus) {
  border-color: #999999;
}

/* Input focus state */
.form-input:focus {
  outline: none;
  border-color: var(--form-border-focus);
  box-shadow: 0 0 0 3px rgba(26, 35, 126, 0.15);
}

/* Input disabled state */
.form-input:disabled {
  background-color: var(--form-background-disabled);
  color: var(--form-text-secondary);
  cursor: not-allowed;
  opacity: 0.7;
}

/* Input readonly state */
.form-input:read-only {
  background-color: var(--form-background-disabled);
}

/* --------------------------------------------------------------------------
   Dropdowns / Select Elements
   -------------------------------------------------------------------------- */
.form-select {
  display: block;
  width: 100%;
  padding: var(--form-padding);
  padding-right: 40px;
  font-family: 'Open Sans', sans-serif;
  font-size: var(--form-font-size);
  line-height: var(--form-line-height);
  color: var(--form-text);
  background-color: var(--form-background);
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%23666666' d='M6 8.825L1.175 4 2.238 2.938 6 6.7l3.763-3.762L10.825 4z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 16px center;
  background-size: 12px;
  border: 1px solid var(--form-border);
  border-radius: var(--form-border-radius);
  transition: var(--form-transition);
  cursor: pointer;
  appearance: none;
  -webkit-appearance: none;
  -moz-appearance: none;
  box-sizing: border-box;
}

/* Select hover state */
.form-select:hover:not(:disabled):not(:focus) {
  border-color: #999999;
}

/* Select focus state */
.form-select:focus {
  outline: none;
  border-color: var(--form-border-focus);
  box-shadow: 0 0 0 3px rgba(26, 35, 126, 0.15);
}

/* Select disabled state */
.form-select:disabled {
  background-color: var(--form-background-disabled);
  color: var(--form-text-secondary);
  cursor: not-allowed;
  opacity: 0.7;
}

/* Placeholder option styling */
.form-select option[value=""] {
  color: var(--form-text-secondary);
}

/* --------------------------------------------------------------------------
   Textareas
   -------------------------------------------------------------------------- */
.form-textarea {
  display: block;
  width: 100%;
  min-height: 120px;
  padding: var(--form-padding);
  font-family: 'Open Sans', sans-serif;
  font-size: var(--form-font-size);
  line-height: var(--form-line-height);
  color: var(--form-text);
  background-color: var(--form-background);
  border: 1px solid var(--form-border);
  border-radius: var(--form-border-radius);
  transition: var(--form-transition);
  resize: vertical;
  box-sizing: border-box;
}

.form-textarea::placeholder {
  color: var(--form-text-secondary);
  opacity: 0.7;
}

/* Textarea hover state */
.form-textarea:hover:not(:disabled):not(:focus) {
  border-color: #999999;
}

/* Textarea focus state */
.form-textarea:focus {
  outline: none;
  border-color: var(--form-border-focus);
  box-shadow: 0 0 0 3px rgba(26, 35, 126, 0.15);
}

/* Textarea disabled state */
.form-textarea:disabled {
  background-color: var(--form-background-disabled);
  color: var(--form-text-secondary);
  cursor: not-allowed;
  opacity: 0.7;
}

/* --------------------------------------------------------------------------
   Submit Buttons
   -------------------------------------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 14px 28px;
  font-family: 'Open Sans', sans-serif;
  font-size: var(--form-font-size);
  font-weight: 600;
  line-height: 1;
  text-decoration: none;
  text-align: center;
  border: 2px solid transparent;
  border-radius: var(--form-border-radius);
  cursor: pointer;
  transition: var(--form-transition);
  box-sizing: border-box;
}

/* Primary Button (Red) - Main CTAs */
.btn--primary {
  color: #FFFFFF;
  background-color: var(--form-primary);
  border-color: var(--form-primary);
}

.btn--primary:hover:not(:disabled) {
  background-color: var(--form-primary-dark);
  border-color: var(--form-primary-dark);
}

.btn--primary:focus {
  outline: none;
  box-shadow: 0 0 0 3px rgba(217, 48, 37, 0.3);
}

.btn--primary:active:not(:disabled) {
  transform: translateY(1px);
}

/* Secondary Button (Outlined) */
.btn--secondary {
  color: var(--form-primary);
  background-color: transparent;
  border-color: var(--form-primary);
}

.btn--secondary:hover:not(:disabled) {
  color: #FFFFFF;
  background-color: var(--form-primary);
}

.btn--secondary:focus {
  outline: none;
  box-shadow: 0 0 0 3px rgba(217, 48, 37, 0.3);
}

.btn--secondary:active:not(:disabled) {
  transform: translateY(1px);
}

/* White Button (For dark backgrounds) */
.btn--white {
  color: var(--form-primary);
  background-color: #FFFFFF;
  border-color: #FFFFFF;
}

.btn--white:hover:not(:disabled) {
  color: var(--form-primary-dark);
  background-color: #F5F5F5;
  border-color: #F5F5F5;
}

.btn--white:focus {
  outline: none;
  box-shadow: 0 0 0 3px rgba(255, 255, 255, 0.4);
}

.btn--white:active:not(:disabled) {
  transform: translateY(1px);
}

/* Button disabled state */
.btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
  transform: none;
}

/* Full-width button */
.btn--full {
  width: 100%;
}

/* Button sizes */
.btn--small {
  padding: 10px 20px;
  font-size: 14px;
}

.btn--large {
  padding: 18px 36px;
  font-size: 18px;
}

/* --------------------------------------------------------------------------
   Validation States - Error
   -------------------------------------------------------------------------- */
.form-input--error,
.form-select--error,
.form-textarea--error {
  border-color: var(--form-error);
  background-color: var(--form-error-light);
}

.form-input--error:focus,
.form-select--error:focus,
.form-textarea--error:focus {
  border-color: var(--form-error);
  box-shadow: 0 0 0 3px rgba(211, 47, 47, 0.15);
}

.form-error-message {
  display: flex;
  align-items: center;
  gap: 6px;
  margin-top: 0.5rem;
  font-size: 13px;
  color: var(--form-error);
}

.form-error-message::before {
  content: '';
  display: inline-block;
  width: 14px;
  height: 14px;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='%23D32F2F'%3E%3Cpath d='M12 2C6.48 2 2 6.48 2 12s4.48 10 10 10 10-4.48 10-10S17.52 2 12 2zm1 15h-2v-2h2v2zm0-4h-2V7h2v6z'/%3E%3C/svg%3E");
  background-size: contain;
  background-repeat: no-repeat;
  flex-shrink: 0;
}

/* Error state for form group */
.form-group--error .form-label {
  color: var(--form-error);
}

/* --------------------------------------------------------------------------
   Validation States - Success
   -------------------------------------------------------------------------- */
.form-input--success,
.form-select--success,
.form-textarea--success {
  border-color: var(--form-success);
  background-color: var(--form-success-light);
}

.form-input--success:focus,
.form-select--success:focus,
.form-textarea--success:focus {
  border-color: var(--form-success);
  box-shadow: 0 0 0 3px rgba(46, 125, 50, 0.15);
}

.form-success-message {
  display: flex;
  align-items: center;
  gap: 6px;
  margin-top: 0.5rem;
  font-size: 13px;
  color: var(--form-success);
}

.form-success-message::before {
  content: '';
  display: inline-block;
  width: 14px;
  height: 14px;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='%232E7D32'%3E%3Cpath d='M12 2C6.48 2 2 6.48 2 12s4.48 10 10 10 10-4.48 10-10S17.52 2 12 2zm-2 15l-5-5 1.41-1.41L10 14.17l7.59-7.59L19 8l-9 9z'/%3E%3C/svg%3E");
  background-size: contain;
  background-repeat: no-repeat;
  flex-shrink: 0;
}

/* Success state for form group */
.form-group--success .form-label {
  color: var(--form-success);
}

/* --------------------------------------------------------------------------
   Checkbox and Radio Styles
   -------------------------------------------------------------------------- */
.form-check {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  margin-bottom: 0.75rem;
}

.form-check-input {
  flex-shrink: 0;
  width: 18px;
  height: 18px;
  margin-top: 2px;
  border: 2px solid var(--form-border);
  border-radius: 3px;
  cursor: pointer;
  appearance: none;
  -webkit-appearance: none;
  transition: var(--form-transition);
}

.form-check-input[type="radio"] {
  border-radius: 50%;
}

.form-check-input:hover {
  border-color: var(--form-border-focus);
}

.form-check-input:focus {
  outline: none;
  border-color: var(--form-border-focus);
  box-shadow: 0 0 0 3px rgba(26, 35, 126, 0.15);
}

.form-check-input:checked {
  background-color: var(--form-primary);
  border-color: var(--form-primary);
}

.form-check-input[type="checkbox"]:checked {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='white'%3E%3Cpath d='M9 16.17L4.83 12l-1.42 1.41L9 19 21 7l-1.41-1.41z'/%3E%3C/svg%3E");
  background-size: 14px;
  background-position: center;
  background-repeat: no-repeat;
}

.form-check-input[type="radio"]:checked {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'%3E%3Ccircle cx='12' cy='12' r='6' fill='white'/%3E%3C/svg%3E");
  background-size: 10px;
  background-position: center;
  background-repeat: no-repeat;
}

.form-check-input:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.form-check-label {
  font-family: 'Open Sans', sans-serif;
  font-size: var(--form-font-size);
  color: var(--form-text);
  cursor: pointer;
}

.form-check-input:disabled + .form-check-label {
  opacity: 0.5;
  cursor: not-allowed;
}

/* --------------------------------------------------------------------------
   Input Groups (with icons or addons)
   -------------------------------------------------------------------------- */
.input-group {
  position: relative;
  display: flex;
}

.input-group .form-input {
  flex: 1;
}

.input-group--icon .form-input {
  padding-left: 44px;
}

.input-group__icon {
  position: absolute;
  left: 16px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--form-text-secondary);
  pointer-events: none;
}

.input-group__icon svg {
  width: 18px;
  height: 18px;
  display: block;
}

/* --------------------------------------------------------------------------
   Form Layout Utilities
   -------------------------------------------------------------------------- */
.form-row {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.form-row > .form-group {
  flex: 1;
  min-width: 200px;
  margin-bottom: 0;
}

/* Inline form */
.form-inline {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  gap: 1rem;
}

.form-inline .form-group {
  margin-bottom: 0;
}

/* --------------------------------------------------------------------------
   Responsive Adjustments
   -------------------------------------------------------------------------- */
@media (max-width: 767px) {
  .form-row {
    flex-direction: column;
  }

  .form-row > .form-group {
    min-width: 100%;
  }

  .form-inline {
    flex-direction: column;
    align-items: stretch;
  }

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