/**
 * NWESTCO DESIGN SYSTEM - FORMS
 *
 * Form component system including:
 * - Text inputs, textareas, selects
 * - Checkboxes and radio buttons
 * - Form validation states
 * - Form layouts and groups
 *
 * WCAG AA Compliant - All form elements meet accessibility standards
 */


/* ============================================================
   FORM CONTAINER
   ============================================================ */

.form {
  width: 100%;
}

.form-section {
  margin-bottom: var(--space-8);
}

.form-section:last-child {
  margin-bottom: 0;
}


/* ============================================================
   FORM GROUPS - Label + Input pairing
   ============================================================ */

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

.form-group:last-child {
  margin-bottom: 0;
}


/* ============================================================
   LABELS
   ============================================================ */

.form-label,
label {
  display: block;
  font-family: var(--font-primary);
  font-size: var(--text-sm);
  font-weight: var(--font-semibold);
  color: var(--nwestco-neutral-700);
  margin-bottom: var(--space-2);
  cursor: pointer;
}

.form-label.required::after,
label.required::after {
  content: "*";
  color: var(--nwestco-error);
  margin-left: 0.25rem;
}


/* ============================================================
   TEXT INPUTS - Text, Email, Tel, URL, Number, etc.
   ============================================================ */

.form-input,
input[type="text"],
input[type="email"],
input[type="tel"],
input[type="url"],
input[type="number"],
input[type="search"],
input[type="password"],
input[type="date"],
input[type="datetime-local"],
input[type="time"],
textarea,
select {
  /* Layout */
  display: block;
  width: 100%;

  /* Typography */
  font-family: var(--font-secondary);
  font-size: var(--text-base);
  font-weight: var(--font-normal);
  color: var(--nwestco-neutral-900);
  line-height: var(--leading-normal);

  /* Spacing */
  padding: var(--input-padding-y) var(--input-padding-x);

  /* Visual */
  background-color: #ffffff;
  border: var(--input-border-width) solid var(--input-border-color);
  border-radius: var(--input-border-radius);
  box-shadow: var(--shadow-xs);

  /* Transitions */
  transition: all var(--transition-fast);

  /* Appearance */
  -webkit-appearance: none;
  -moz-appearance: none;
  appearance: none;
}

/* Placeholder styling */
.form-input::placeholder,
input::placeholder,
textarea::placeholder {
  color: var(--nwestco-neutral-400);
  opacity: 1;
}

/* Focus state */
.form-input:focus,
input:focus,
textarea:focus,
select:focus {
  outline: none;
  border-color: var(--input-border-color-focus);
  box-shadow: var(--shadow-focus);
  background-color: #ffffff;
}

/* Hover state */
.form-input:hover:not(:disabled):not(:focus),
input:hover:not(:disabled):not(:focus),
textarea:hover:not(:disabled):not(:focus),
select:hover:not(:disabled):not(:focus) {
  border-color: var(--nwestco-neutral-400);
}

/* Disabled state */
.form-input:disabled,
input:disabled,
textarea:disabled,
select:disabled {
  background-color: var(--nwestco-neutral-50);
  color: var(--nwestco-neutral-500);
  cursor: not-allowed;
  opacity: 0.7;
}

/* Read-only state */
.form-input:read-only,
input:read-only {
  background-color: var(--nwestco-neutral-25);
  color: var(--nwestco-neutral-700);
}


/* ============================================================
   TEXTAREA - Multi-line text input
   ============================================================ */

textarea {
  min-height: 120px;
  resize: vertical;
  line-height: var(--leading-relaxed);
}

textarea.no-resize {
  resize: none;
}


/* ============================================================
   SELECT DROPDOWN
   ============================================================ */

select {
  padding-right: 2.5rem;
  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='%23626262' d='M6 9L1 4h10z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 1rem center;
  background-size: 12px;
  cursor: pointer;
}

select:focus {
  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='%2325617C' d='M6 9L1 4h10z'/%3E%3C/svg%3E");
}

/* Multiple select */
select[multiple] {
  padding-right: var(--input-padding-x);
  background-image: none;
  min-height: 120px;
}


/* ============================================================
   CHECKBOXES & RADIO BUTTONS
   ============================================================ */

/* Container for checkbox/radio + label */
.form-check {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  margin-bottom: var(--space-3);
}

.form-check:last-child {
  margin-bottom: 0;
}

/* Hide default checkbox/radio */
.form-check input[type="checkbox"],
.form-check input[type="radio"],
input[type="checkbox"].form-check-input,
input[type="radio"].form-check-input {
  position: absolute;
  opacity: 0;
  pointer-events: none;
}

/* Custom checkbox/radio visual */
.form-check-label {
  position: relative;
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  font-family: var(--font-secondary);
  font-size: var(--text-base);
  font-weight: var(--font-normal);
  color: var(--nwestco-neutral-900);
  cursor: pointer;
  user-select: none;
}

.form-check-label::before {
  content: "";
  display: block;
  width: 1.25rem;
  height: 1.25rem;
  flex-shrink: 0;
  margin-top: 0.125rem;
  border: 2px solid var(--nwestco-neutral-300);
  background-color: var(--nwestco-white);
  transition: all var(--transition-fast);
}

/* Checkbox - square */
input[type="checkbox"] + .form-check-label::before {
  border-radius: var(--radius-sm);
}

/* Radio - circle */
input[type="radio"] + .form-check-label::before {
  border-radius: 50%;
}

/* Checked state */
input[type="checkbox"]:checked + .form-check-label::before,
input[type="radio"]:checked + .form-check-label::before {
  background-color: var(--nwestco-blue);
  border-color: var(--nwestco-blue);
}

/* Checkbox checkmark */
input[type="checkbox"]:checked + .form-check-label::after {
  content: "";
  position: absolute;
  left: 0.375rem;
  top: 0.5rem;
  width: 0.5rem;
  height: 0.75rem;
  border: solid var(--nwestco-white);
  border-width: 0 2px 2px 0;
  transform: rotate(45deg);
}

/* Radio dot */
input[type="radio"]:checked + .form-check-label::after {
  content: "";
  position: absolute;
  left: 0.375rem;
  top: 0.5rem;
  width: 0.625rem;
  height: 0.625rem;
  background-color: var(--nwestco-white);
  border-radius: 50%;
}

/* Focus state */
input[type="checkbox"]:focus-visible + .form-check-label::before,
input[type="radio"]:focus-visible + .form-check-label::before {
  outline: 2px solid var(--nwestco-blue);
  outline-offset: 2px;
}

/* Hover state */
input[type="checkbox"]:hover:not(:disabled) + .form-check-label::before,
input[type="radio"]:hover:not(:disabled) + .form-check-label::before {
  border-color: var(--nwestco-blue);
}

/* Disabled state */
input[type="checkbox"]:disabled + .form-check-label,
input[type="radio"]:disabled + .form-check-label {
  opacity: 0.6;
  cursor: not-allowed;
}

input[type="checkbox"]:disabled + .form-check-label::before,
input[type="radio"]:disabled + .form-check-label::before {
  background-color: var(--nwestco-neutral-50);
}


/* ============================================================
   FORM VALIDATION STATES
   ============================================================ */

/* Success state */
.form-input.is-valid,
input.is-valid,
textarea.is-valid,
select.is-valid {
  border-color: var(--nwestco-success-dark);
  background-color: var(--nwestco-white);
}

.form-input.is-valid:focus,
input.is-valid:focus,
textarea.is-valid:focus,
select.is-valid:focus {
  border-color: var(--nwestco-success-dark);
  box-shadow: 0 0 0 3px rgba(112, 153, 68, 0.1);
}

/* Error state */
.form-input.is-invalid,
input.is-invalid,
textarea.is-invalid,
select.is-invalid {
  border-color: var(--nwestco-error);
  background-color: var(--nwestco-white);
}

.form-input.is-invalid:focus,
input.is-invalid:focus,
textarea.is-invalid:focus,
select.is-invalid:focus {
  border-color: var(--nwestco-error);
  box-shadow: 0 0 0 3px rgba(220, 38, 38, 0.1);
}


/* ============================================================
   FORM FEEDBACK MESSAGES
   ============================================================ */

.form-feedback {
  display: block;
  margin-top: var(--space-2);
  font-size: var(--text-sm);
  line-height: var(--leading-normal);
}

.form-feedback.valid,
.form-feedback.success {
  color: var(--nwestco-success-dark);
}

.form-feedback.invalid,
.form-feedback.error {
  color: var(--nwestco-error-dark);
}

.form-feedback.warning {
  color: var(--nwestco-warning-dark);
}

.form-feedback.info {
  color: var(--nwestco-info-dark);
}

/* Helper text */
.form-help {
  display: block;
  margin-top: var(--space-2);
  font-size: var(--text-sm);
  color: var(--nwestco-neutral-500);
  line-height: var(--leading-normal);
}


/* ============================================================
   INPUT GROUPS - Icons or text inside inputs
   ============================================================ */

.input-group {
  position: relative;
  display: flex;
  align-items: center;
}

.input-group-icon {
  position: absolute;
  left: 1rem;
  display: flex;
  align-items: center;
  pointer-events: none;
  color: var(--nwestco-neutral-500);
}

.input-group-icon svg,
.input-group-icon img {
  width: 1.25rem;
  height: 1.25rem;
}

.input-group.has-icon-left input {
  padding-left: 3rem;
}

.input-group-icon-right {
  position: absolute;
  right: 1rem;
  display: flex;
  align-items: center;
  pointer-events: none;
  color: var(--nwestco-neutral-500);
}

.input-group.has-icon-right input {
  padding-right: 3rem;
}


/* ============================================================
   INPUT SIZES
   ============================================================ */

.form-input-sm,
input.input-sm,
textarea.input-sm,
select.input-sm {
  font-size: var(--text-sm);
  padding: 0.5rem 0.75rem;
}

.form-input-lg,
input.input-lg,
textarea.input-lg,
select.input-lg {
  font-size: var(--text-lg);
  padding: 1rem 1.25rem;
}


/* ============================================================
   FORM LAYOUTS
   ============================================================ */

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

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

/* Grid form layout */
.form-grid {
  display: grid;
  gap: var(--space-6);
  grid-template-columns: 1fr;
}

@media (min-width: 768px) {
  .form-grid-2 {
    grid-template-columns: repeat(2, 1fr);
  }

  .form-grid-3 {
    grid-template-columns: repeat(3, 1fr);
  }

  .form-grid-4 {
    grid-template-columns: repeat(4, 1fr);
  }
}

/* Full width form field */
.form-grid .form-group-full {
  grid-column: 1 / -1;
}


/* ============================================================
   FILE UPLOAD
   ============================================================ */

input[type="file"] {
  padding: 0.5rem;
  border: 2px dashed var(--nwestco-neutral-300);
  cursor: pointer;
}

input[type="file"]:hover {
  border-color: var(--nwestco-blue);
}

input[type="file"]:focus {
  outline: none;
  border-color: var(--nwestco-blue);
  box-shadow: var(--shadow-focus);
}


/* ============================================================
   SEARCH INPUT
   ============================================================ */

.search-input-wrapper {
  position: relative;
}

input[type="search"] {
  padding-left: 3rem;
  border-radius: 9999px;
}

.search-input-wrapper::before {
  content: "=
";
  position: absolute;
  left: 1rem;
  top: 50%;
  transform: translateY(-50%);
  pointer-events: none;
}


/* ============================================================
   RESPONSIVE FORMS - Mobile adjustments
   ============================================================ */

@media (max-width: 768px) {
  /* Prevent zoom on iOS when focusing inputs */
  .form-input,
  input,
  textarea,
  select {
    font-size: 16px; /* iOS doesn't zoom at 16px or larger */
  }

  /* Stack inline forms on mobile */
  .form-inline {
    flex-direction: column;
    align-items: stretch;
  }

  .form-inline .form-group {
    width: 100%;
  }
}


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

/* Required field indicator for screen readers */
.required-indicator {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border-width: 0;
}

/* High contrast mode support */
@media (prefers-contrast: high) {
  .form-input,
  input,
  textarea,
  select {
    border-width: 2px;
  }

  input[type="checkbox"] + .form-check-label::before,
  input[type="radio"] + .form-check-label::before {
    border-width: 3px;
  }
}