/*
 * Form Components - 폼 컴포넌트
 * 사용법: <div class="form-group"><label class="form-label">이름</label><input class="form-input"></div>
 */

/* Form Group */
.form-group {
  margin-bottom: var(--spacing-md);
}

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

/* Form Label */
.form-label {
  display: block;
  margin-bottom: var(--spacing-xs);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  color: var(--color-text-primary);
}

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

/* Form Hint */
.form-hint {
  display: block;
  margin-top: var(--spacing-xs);
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
}

.form-error {
  display: block;
  margin-top: var(--spacing-xs);
  font-size: var(--font-size-sm);
  color: var(--color-danger);
}

/* Base Input Styles */
.form-input,
.form-textarea,
.form-select {
  display: block;
  width: 100%;
  padding: var(--spacing-sm) var(--spacing-md);
  font-size: var(--font-size-base);
  font-family: inherit;
  line-height: var(--line-height-normal);
  color: var(--color-text-primary);
  background-color: var(--color-bg-primary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.form-input:focus,
.form-textarea:focus,
.form-select:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

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

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

/* Input with error state */
.form-input-error,
.form-textarea-error,
.form-select-error {
  border-color: var(--color-danger);
}

.form-input-error:focus,
.form-textarea-error:focus,
.form-select-error:focus {
  box-shadow: 0 0 0 3px rgba(239, 68, 68, 0.1);
}

/* Input Sizes */
.form-input-sm,
.form-select-sm {
  padding: var(--spacing-xs) var(--spacing-sm);
  font-size: var(--font-size-sm);
}

.form-input-lg,
.form-select-lg {
  padding: var(--spacing-md) var(--spacing-md);
  font-size: var(--font-size-lg);
}

/* Textarea */
.form-textarea {
  min-height: 100px;
  resize: vertical;
}

.form-textarea-sm {
  min-height: 60px;
}

.form-textarea-lg {
  min-height: 150px;
}

/* Select */
.form-select {
  cursor: pointer;
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%236b7280' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right var(--spacing-sm) center;
  padding-right: var(--spacing-xl);
}

/* Checkbox and Radio */
.form-checkbox-group,
.form-radio-group {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.form-checkbox,
.form-radio {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  cursor: pointer;
}

.form-checkbox input,
.form-radio input {
  width: 16px;
  height: 16px;
  margin: 0;
  cursor: pointer;
  accent-color: var(--color-primary);
}

.form-checkbox-label,
.form-radio-label {
  font-size: var(--font-size-base);
  color: var(--color-text-primary);
}

/* Toggle Switch */
.form-toggle {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-sm);
  cursor: pointer;
}

.form-toggle-input {
  position: absolute;
  opacity: 0;
  width: 0;
  height: 0;
}

.form-toggle-slider {
  position: relative;
  width: 44px;
  height: 24px;
  background-color: var(--color-gray-300);
  border-radius: var(--radius-full);
  transition: background-color var(--transition-fast);
}

.form-toggle-slider::before {
  content: "";
  position: absolute;
  top: 2px;
  left: 2px;
  width: 20px;
  height: 20px;
  background-color: white;
  border-radius: 50%;
  transition: transform var(--transition-fast);
  box-shadow: var(--shadow-sm);
}

.form-toggle-input:checked + .form-toggle-slider {
  background-color: var(--color-primary);
}

.form-toggle-input:checked + .form-toggle-slider::before {
  transform: translateX(20px);
}

.form-toggle-input:focus + .form-toggle-slider {
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

/* Input Group (input with prefix/suffix) */
.input-group {
  display: flex;
  align-items: stretch;
}

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

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

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

.input-group-text {
  display: flex;
  align-items: center;
  padding: var(--spacing-sm) var(--spacing-md);
  font-size: var(--font-size-base);
  color: var(--color-text-secondary);
  background-color: var(--color-bg-tertiary);
  border: 1px solid var(--color-border);
}

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

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

/* Inline Form */
.form-inline {
  display: flex;
  align-items: flex-end;
  gap: var(--spacing-md);
  flex-wrap: wrap;
}

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

/* Form Actions */
.form-actions {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: var(--spacing-sm);
  margin-top: var(--spacing-lg);
  padding-top: var(--spacing-md);
  border-top: 1px solid var(--color-border);
}

/* File Input */
.form-file {
  position: relative;
}

.form-file-input {
  position: absolute;
  opacity: 0;
  width: 100%;
  height: 100%;
  cursor: pointer;
}

.form-file-label {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-lg);
  border: 2px dashed var(--color-border);
  border-radius: var(--radius-md);
  text-align: center;
  color: var(--color-text-secondary);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.form-file-label:hover {
  border-color: var(--color-primary);
  background-color: var(--color-primary-light);
}

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

.form-search .form-input {
  padding-left: var(--spacing-xl);
}

.form-search-icon {
  position: absolute;
  left: var(--spacing-md);
  top: 50%;
  transform: translateY(-50%);
  color: var(--color-text-muted);
  pointer-events: none;
}