/**
 * StrongBody Form Components
 * Modern, accessible form styles based on design system
 */

/* ===== FORM ELEMENTS ===== */

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

.form-label {
  display: block;
  margin-bottom: var(--space-2);
  font-size: var(--text-sm);
  font-weight: var(--font-weight-medium);
  color: var(--color-text-primary);
  line-height: var(--line-height-tight);
}

.form-description {
  margin-top: var(--space-1);
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  line-height: var(--line-height-relaxed);
}

.form-error {
  margin-top: var(--space-1);
  font-size: var(--text-sm);
  color: var(--color-error);
  line-height: var(--line-height-tight);
}

/* ===== INPUT FIELDS ===== */

.form-input,
.form-textarea,
.form-select {
  width: 100%;
  padding: var(--space-5) var(--space-7);
  font-family: var(--font-primary);
  font-size: var(--text-base);
  font-weight: var(--font-weight-normal);
  line-height: var(--line-height-relaxed);
  color: var(--color-text-primary);
  background-color: var(--color-bg-primary);
  border: 1px solid var(--color-border-primary);
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
  -webkit-appearance: none;
  -moz-appearance: none;
  appearance: none;
}

.form-input:focus,
.form-textarea:focus,
.form-select:focus {
  outline: none;
  border-color: var(--color-border-focus);
  box-shadow: 0 0 0 3px rgba(0, 162, 240, 0.1);
  transform: translateY(-1px);
}

.form-input:hover:not(:focus),
.form-textarea:hover:not(:focus),
.form-select:hover:not(:focus) {
  border-color: var(--color-border-hover);
}

.form-input:disabled,
.form-textarea:disabled,
.form-select:disabled {
  background-color: var(--color-bg-secondary);
  color: var(--color-text-muted);
  cursor: not-allowed;
  opacity: 0.6;
}

.form-input::placeholder,
.form-textarea::placeholder {
  color: var(--color-text-muted);
  opacity: 1;
}

/* ===== INPUT VARIANTS ===== */

.form-input-sm {
  padding: var(--space-4) var(--space-6);
  font-size: var(--text-sm);
  border-radius: var(--radius-sm);
}

.form-input-lg {
  padding: var(--space-6) var(--space-8);
  font-size: var(--text-lg);
  border-radius: var(--radius-lg);
}

/* ===== TEXTAREA ===== */

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

.form-textarea-sm {
  min-height: 80px;
  padding: var(--space-4) var(--space-6);
  font-size: var(--text-sm);
}

.form-textarea-lg {
  min-height: 160px;
  padding: var(--space-6) var(--space-8);
  font-size: var(--text-lg);
}

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

.form-select {
  background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 20 20'%3e%3cpath stroke='%236b7280' stroke-linecap='round' stroke-linejoin='round' stroke-width='1.5' d='m6 8 4 4 4-4'/%3e%3c/svg%3e");
  background-position: right var(--space-3) center;
  background-repeat: no-repeat;
  background-size: 16px 16px;
  padding-right: var(--space-10);
  cursor: pointer;
}

.form-select option {
  padding: var(--space-2) var(--space-3);
  background-color: var(--color-bg-primary);
  color: var(--color-text-primary);
}

/* ===== CHECKBOXES ===== */

.checkbox-group {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  margin-bottom: var(--space-4);
}

.checkbox-input {
  position: relative;
  width: 20px;
  height: 20px;
  margin: 0;
  -webkit-appearance: none;
  -moz-appearance: none;
  appearance: none;
  border: 2px solid var(--color-border-primary);
  border-radius: 4px;
  background-color: var(--color-bg-primary);
  cursor: pointer;
  transition: all var(--transition-fast);
  flex-shrink: 0;
}

.checkbox-input:checked {
  background-color: var(--color-primary-500);
  border-color: var(--color-primary-500);
  background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 20 20' fill='white'%3e%3cpath fill-rule='evenodd' d='M16.707 5.293a1 1 0 010 1.414l-8 8a1 1 0 01-1.414 0l-4-4a1 1 0 01 1.414-1.414L8 12.586l7.293-7.293a1 1 0 011.414 0z' clip-rule='evenodd' /%3e%3c/svg%3e");
  background-size: 14px 14px;
  background-position: center;
  background-repeat: no-repeat;
}

.checkbox-input:focus {
  outline: none;
  box-shadow: 0 0 0 3px rgba(0, 162, 240, 0.1);
}

.checkbox-input:hover:not(:checked) {
  border-color: var(--color-border-hover);
}

.checkbox-input:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

.checkbox-label {
  font-size: var(--text-base);
  color: var(--color-text-primary);
  line-height: var(--line-height-relaxed);
  cursor: pointer;
  margin-bottom: 0;
}

/* ===== RADIO BUTTONS ===== */

.radio-group {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  margin-bottom: var(--space-4);
}

.radio-input {
  position: relative;
  width: 20px;
  height: 20px;
  margin: 0;
  -webkit-appearance: none;
  -moz-appearance: none;
  appearance: none;
  border: 2px solid var(--color-border-primary);
  border-radius: 50%;
  background-color: var(--color-bg-primary);
  cursor: pointer;
  transition: all var(--transition-fast);
  flex-shrink: 0;
}

.radio-input:checked {
  background-color: var(--color-primary-500);
  border-color: var(--color-primary-500);
  background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 20 20' fill='white'%3e%3ccircle cx='10' cy='10' r='3' /%3e%3c/svg%3e");
  background-size: 8px 8px;
  background-position: center;
  background-repeat: no-repeat;
}

.radio-input:focus {
  outline: none;
  box-shadow: 0 0 0 3px rgba(0, 162, 240, 0.1);
}

.radio-input:hover:not(:checked) {
  border-color: var(--color-border-hover);
}

.radio-input:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

.radio-label {
  font-size: var(--text-base);
  color: var(--color-text-primary);
  line-height: var(--line-height-relaxed);
  cursor: pointer;
  margin-bottom: 0;
}

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

.form-row {
  display: flex;
  gap: var(--space-4);
  margin-bottom: var(--space-6);
}

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

.form-grid {
  display: grid;
  gap: var(--space-6);
}

.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);
}

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

.form-input.is-valid,
.form-textarea.is-valid,
.form-select.is-valid {
  border-color: var(--color-success);
  box-shadow: 0 0 0 3px rgba(25, 131, 97, 0.1);
}

.form-input.is-invalid,
.form-textarea.is-invalid,
.form-select.is-invalid {
  border-color: var(--color-error);
  box-shadow: 0 0 0 3px rgba(239, 68, 68, 0.1);
}

.form-input.is-valid:focus,
.form-textarea.is-valid:focus,
.form-select.is-valid:focus {
  border-color: var(--color-success);
  box-shadow: 0 0 0 3px rgba(25, 131, 97, 0.2);
}

.form-input.is-invalid:focus,
.form-textarea.is-invalid:focus,
.form-select.is-invalid:focus {
  border-color: var(--color-error);
  box-shadow: 0 0 0 3px rgba(239, 68, 68, 0.2);
}

/* ===== FORM CONTROLS ===== */

.form-actions {
  display: flex;
  gap: var(--space-3);
  justify-content: flex-end;
  margin-top: var(--space-8);
  padding-top: var(--space-6);
  border-top: 1px solid var(--color-border-primary);
}

.form-actions-start {
  justify-content: flex-start;
}

.form-actions-center {
  justify-content: center;
}

.form-actions-stretch {
  flex-direction: column;
}

.form-actions-stretch .btn {
  width: 100%;
  margin-bottom: var(--space-3);
}

/* ===== SPECIAL FORM ELEMENTS ===== */

/* Search Input */
.search-input {
  position: relative;
}

.search-input .form-input {
  padding-left: var(--space-10);
}

.search-icon {
  position: absolute;
  left: var(--space-3);
  top: 50%;
  transform: translateY(-50%);
  color: var(--color-text-muted);
  font-size: var(--text-lg);
  pointer-events: none;
}

/* Password Toggle */
.password-input {
  position: relative;
}

.password-toggle {
  position: absolute;
  right: var(--space-3);
  top: 50%;
  transform: translateY(-50%);
  background: none;
  border: none;
  color: var(--color-text-muted);
  cursor: pointer;
  font-size: var(--text-sm);
  padding: var(--space-1);
  transition: color var(--transition-fast);
}

.password-toggle:hover {
  color: var(--color-text-primary);
}

/* File Upload */
.file-input {
  position: relative;
  overflow: hidden;
}

.file-input input[type="file"] {
  position: absolute;
  left: -9999px;
  opacity: 0;
}

.file-input-label {
  display: inline-block;
  padding: var(--space-3) var(--space-6);
  background-color: var(--color-bg-secondary);
  border: 2px dashed var(--color-border-primary);
  border-radius: var(--radius-md);
  color: var(--color-text-secondary);
  cursor: pointer;
  transition: all var(--transition-fast);
  text-align: center;
}

.file-input-label:hover {
  border-color: var(--color-border-hover);
  background-color: var(--color-bg-accent);
}

.file-input-label.dragover {
  border-color: var(--color-primary-500);
  background-color: rgba(251, 55, 46, 0.05);
}

/* ===== RESPONSIVE FORMS ===== */

@media (max-width: 768px) {
  .form-row {
    flex-direction: column;
    gap: var(--space-6);
  }

  .form-grid-2,
  .form-grid-3,
  .form-grid-4 {
    grid-template-columns: 1fr;
  }

  .form-input,
  .form-textarea,
  .form-select {
    padding: var(--space-4) var(--space-6);
    font-size: var(--text-base);
  }

  .form-actions {
    flex-direction: column;
  }

  .form-actions .btn {
    width: 100%;
    margin-bottom: var(--space-3);
  }
}

@media (max-width: 640px) {
  .form-input,
  .form-textarea,
  .form-select {
    padding: var(--space-5) var(--space-6);
    font-size: var(--text-base);
  }

  .checkbox-group,
  .radio-group {
    flex-direction: column;
    align-items: flex-start;
  }
}

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

@media (prefers-reduced-motion: reduce) {
  .form-input,
  .form-textarea,
  .form-select,
  .checkbox-input,
  .radio-input {
    transition: none;
  }
}

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

  .checkbox-input,
  .radio-input {
    border-width: 3px;
  }
}

/* ===== WORDPRESS COMPATIBILITY ===== */

.wp-admin .form-input,
.wp-admin .form-textarea,
.wp-admin .form-select {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
}

/* ===== LEGACY SUPPORT ===== */

input[type="text"],
input[type="email"],
input[type="password"],
input[type="number"],
input[type="tel"],
input[type="url"],
input[type="search"],
textarea,
select {
  @extend .form-input;
}

input[type="checkbox"] {
  @extend .checkbox-input;
}

input[type="radio"] {
  @extend .radio-input;
}

label {
  @extend .form-label;
}