/**
 * Forms Component
 * Structure only - colors applied in colors.css
 */

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

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

/* Form labels */
.form-label,
label {
  display: block;
  margin-bottom: var(--space-2);
  font-weight: var(--font-medium);
  font-size: var(--text-sm);
  /* Color applied in colors.css */
}

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

/* Input fields */
.form-input,
.form-textarea,
.form-select,
.form-control,
input[type="text"],
input[type="email"],
input[type="password"],
input[type="number"],
input[type="tel"],
input[type="url"],
input[type="search"],
input[type="date"],
input[type="time"],
input[type="datetime-local"],
textarea,
select {
  width: 100%;
  padding: var(--space-3) var(--space-4);
  border-width: 2px;
  border-style: solid;
  border-radius: var(--radius-md);
  font-size: var(--text-base);
  font-family: inherit;
  transition: all var(--transition-fast);
  /* Background, border-color, color applied in colors.css */
  min-height: 44px; /* Touch-friendly - WCAG 2.1 Level AAA */
}

.form-input:focus,
.form-textarea:focus,
.form-select:focus,
.form-control:focus,
input:focus,
textarea:focus,
select:focus {
  outline: none;
  /* Border color and box shadow applied in colors.css */
}

.form-input:disabled,
.form-textarea:disabled,
.form-select:disabled,
.form-control:disabled,
input:disabled,
textarea:disabled,
select:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

/* Textarea specific */
.form-textarea,
textarea {
  min-height: 120px;
  resize: vertical;
}

/* Select specific */
.form-select,
select {
  cursor: pointer;
  -webkit-appearance: none;
  -moz-appearance: none;
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='currentColor' stroke-width='2'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right var(--space-3) center;
  background-size: 1.25em;
  padding-right: calc(var(--space-4) + 1.5em);
}

/* Input sizes */
.form-input-sm,
input.input-sm {
  padding: var(--space-2) var(--space-3);
  font-size: var(--text-sm);
}

.form-input-lg,
input.input-lg {
  padding: var(--space-4) var(--space-5);
  font-size: var(--text-lg);
}

/* Checkbox and radio */
.form-check {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  margin-bottom: var(--space-3);
}

.form-check input[type="checkbox"],
.form-check input[type="radio"] {
  width: 1.5rem; /* 24px - touch-friendly */
  height: 1.5rem;
  margin: 0;
  cursor: pointer;
}

.form-check label {
  margin: 0;
  cursor: pointer;
  font-weight: var(--font-normal);
  padding: 10px; /* Creates 44px tap area */
  margin: -10px;
}

/* Input group (with icons or buttons) */
.input-group {
  display: flex;
  align-items: stretch;
  width: 100%;
}

.input-group .form-input,
.input-group input {
  border-radius: 0;
  flex: 1;
}

.input-group .form-input:first-child,
.input-group input:first-child {
  border-radius: var(--radius-md) 0 0 var(--radius-md);
}

.input-group .form-input:last-child,
.input-group input:last-child {
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
}

.input-group-prepend,
.input-group-append {
  display: flex;
  align-items: center;
  padding: var(--space-3) var(--space-4);
  border-width: 2px;
  border-style: solid;
  font-size: var(--text-base);
  /* Background and border colors applied in colors.css */
}

.input-group-prepend {
  border-radius: var(--radius-md) 0 0 var(--radius-md);
  border-right: none;
}

.input-group-append {
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  border-left: none;
}

/* Form validation states */
.form-input.is-valid,
input.is-valid {
  border-color: var(--color-success);
}

.form-input.is-invalid,
input.is-invalid {
  border-color: var(--color-danger);
}

/* Help text */
.form-help,
.form-text {
  display: block;
  margin-top: var(--space-2);
  font-size: var(--text-sm);
  opacity: 0.7;
}

.form-error,
.invalid-feedback {
  display: block;
  margin-top: var(--space-2);
  font-size: var(--text-sm);
  color: var(--color-danger);
}

.form-success,
.valid-feedback {
  display: block;
  margin-top: var(--space-2);
  font-size: var(--text-sm);
  color: var(--color-success);
}

/* Form row (horizontal fields) */
.form-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--space-4);
}

/* File input */
input[type="file"] {
  padding: var(--space-2);
  border-width: 2px;
  border-style: dashed;
  cursor: pointer;
}

/* Range input */
input[type="range"] {
  width: 100%;
  padding: 0;
  height: 0.5rem;
  border: none;
  cursor: pointer;
}

/* Optional fields section */
.form-optional-section {
  margin: var(--space-6) 0;
  padding: var(--space-5);
  background: var(--color-surface-elevated);
  border-radius: var(--radius-lg);
  border-left: 3px solid var(--color-primary);
}

.form-optional-header {
  margin: 0 0 var(--space-5) 0;
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}

.form-optional-header strong {
  display: block;
  margin-bottom: var(--space-1);
  color: var(--color-text);
}

.form-label-optional {
  color: var(--color-text-muted);
  font-weight: var(--font-normal);
}

/* Three-column address grid */
.form-address-grid {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: var(--space-3);
}

@media (max-width: 768px) {
  .form-address-grid {
    grid-template-columns: 1fr;
  }
}

/* Responsive */
@media (max-width: 768px) {
  input:not([type="checkbox"]):not([type="radio"]),
  select,
  .form-input {
    min-height: 48px; /* Larger touch targets on mobile */
  }

  .form-check input[type="checkbox"],
  .form-check input[type="radio"] {
    width: 1.75rem; /* 28px on mobile */
    height: 1.75rem;
  }

  .form-row {
    grid-template-columns: 1fr;
    gap: var(--space-3);
  }

  .form-group {
    margin-bottom: var(--space-4);
  }

  .form-optional-section {
    padding: var(--space-4);
    margin: var(--space-4) 0;
  }
}

/* Extra small screens */
@media (max-width: 480px) {
  .form-optional-section {
    padding: var(--space-3);
    margin: var(--space-3) 0;
  }

  .form-group {
    margin-bottom: var(--space-3);
  }
}