/**
 * Luna Design System - Extended Form Components
 * Additional form controls beyond basic inputs
 */

/* ============================================
   FORM GROUPS & LAYOUT
   ============================================ */

.luna-form-group {
  margin-bottom: var(--luna-space-5);
}

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

.luna-form-row > * {
  flex: 1;
}

.luna-form-hint {
  display: block;
  font-size: 0.75rem;
  color: var(--luna-text-tertiary);
  margin-top: var(--luna-space-1);
}

.luna-form-error {
  display: block;
  font-size: 0.75rem;
  color: var(--luna-red);
  margin-top: var(--luna-space-1);
}

.luna-form-success {
  display: block;
  font-size: 0.75rem;
  color: var(--luna-green);
  margin-top: var(--luna-space-1);
}

.luna-input-error {
  border-color: var(--luna-red) !important;
}

.luna-input-error:focus {
  box-shadow: 0 0 0 3px rgba(255, 59, 48, 0.15) !important;
}

.luna-input-success {
  border-color: var(--luna-green) !important;
}

/* ============================================
   CHECKBOX
   ============================================ */

.luna-checkbox {
  display: flex;
  align-items: flex-start;
  gap: var(--luna-space-3);
  cursor: pointer;
  user-select: none;
}

.luna-checkbox-input {
  appearance: none;
  width: 20px;
  height: 20px;
  border: 2px solid rgba(0, 0, 0, 0.15);
  border-radius: 6px;
  background: rgba(255, 255, 255, 0.8);
  cursor: pointer;
  transition: var(--luna-transition-fast);
  flex-shrink: 0;
  margin-top: 2px;
  position: relative;
}

.luna-checkbox-input:checked {
  background: var(--luna-primary);
  border-color: var(--luna-primary);
}

.luna-checkbox-input:checked::after {
  content: '';
  position: absolute;
  left: 5px;
  top: 2px;
  width: 6px;
  height: 10px;
  border: solid white;
  border-width: 0 2px 2px 0;
  transform: rotate(45deg);
}

.luna-checkbox-input:focus {
  outline: none;
  box-shadow: 0 0 0 3px rgba(var(--luna-primary-rgb), 0.15);
}

.luna-checkbox-label {
  font-size: 0.9375rem;
  color: var(--luna-text);
  line-height: 1.5;
}

.luna-checkbox-description {
  font-size: 0.8125rem;
  color: var(--luna-text-secondary);
  margin-top: var(--luna-space-1);
}

[data-theme="dark"] .luna-checkbox-input {
  background: rgba(40, 40, 40, 0.8);
  border-color: rgba(255, 255, 255, 0.15);
}

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

.luna-radio {
  display: flex;
  align-items: flex-start;
  gap: var(--luna-space-3);
  cursor: pointer;
  user-select: none;
}

.luna-radio-input {
  appearance: none;
  width: 20px;
  height: 20px;
  border: 2px solid rgba(0, 0, 0, 0.15);
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.8);
  cursor: pointer;
  transition: var(--luna-transition-fast);
  flex-shrink: 0;
  margin-top: 2px;
  position: relative;
}

.luna-radio-input:checked {
  border-color: var(--luna-primary);
}

.luna-radio-input:checked::after {
  content: '';
  position: absolute;
  left: 4px;
  top: 4px;
  width: 8px;
  height: 8px;
  background: var(--luna-primary);
  border-radius: 50%;
}

.luna-radio-input:focus {
  outline: none;
  box-shadow: 0 0 0 3px rgba(var(--luna-primary-rgb), 0.15);
}

.luna-radio-label {
  font-size: 0.9375rem;
  color: var(--luna-text);
  line-height: 1.5;
}

.luna-radio-group {
  display: flex;
  flex-direction: column;
  gap: var(--luna-space-3);
}

.luna-radio-group-horizontal {
  flex-direction: row;
  gap: var(--luna-space-6);
}

[data-theme="dark"] .luna-radio-input {
  background: rgba(40, 40, 40, 0.8);
  border-color: rgba(255, 255, 255, 0.15);
}

/* ============================================
   TOGGLE / SWITCH
   ============================================ */

.luna-toggle {
  display: flex;
  align-items: center;
  gap: var(--luna-space-3);
  cursor: pointer;
  user-select: none;
}

.luna-toggle-input {
  appearance: none;
  width: 48px;
  height: 28px;
  background: rgba(0, 0, 0, 0.1);
  border-radius: 14px;
  cursor: pointer;
  transition: var(--luna-transition-fast);
  position: relative;
  flex-shrink: 0;
}

.luna-toggle-input::after {
  content: '';
  position: absolute;
  left: 2px;
  top: 2px;
  width: 24px;
  height: 24px;
  background: white;
  border-radius: 50%;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
  transition: var(--luna-transition-fast);
}

.luna-toggle-input:checked {
  background: var(--luna-primary);
}

.luna-toggle-input:checked::after {
  left: 22px;
}

.luna-toggle-input:focus {
  outline: none;
  box-shadow: 0 0 0 3px rgba(var(--luna-primary-rgb), 0.15);
}

.luna-toggle-label {
  font-size: 0.9375rem;
  color: var(--luna-text);
}

[data-theme="dark"] .luna-toggle-input {
  background: rgba(255, 255, 255, 0.1);
}

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

.luna-search {
  position: relative;
}

.luna-search-input {
  width: 100%;
  padding: 0.625rem 0.875rem;
  padding-left: 2.5rem;
  border: 1px solid rgba(0, 0, 0, 0.1);
  border-radius: var(--luna-radius-md);
  font-family: var(--luna-font-sans);
  font-size: 0.875rem;
  background: rgba(255, 255, 255, 0.8);
  backdrop-filter: blur(10px);
  transition: var(--luna-transition-fast);
  outline: none;
}

.luna-search-input:focus {
  border-color: var(--luna-primary);
  box-shadow: 0 0 0 3px rgba(var(--luna-primary-rgb), 0.15);
}

.luna-search-icon {
  position: absolute;
  left: 0.875rem;
  top: 50%;
  transform: translateY(-50%);
  color: var(--luna-text-tertiary);
  pointer-events: none;
}

.luna-search-clear {
  position: absolute;
  right: 0.5rem;
  top: 50%;
  transform: translateY(-50%);
  background: none;
  border: none;
  color: var(--luna-text-tertiary);
  cursor: pointer;
  padding: 0.25rem;
}

.luna-search-clear:hover {
  color: var(--luna-text);
}

[data-theme="dark"] .luna-search-input {
  background: rgba(40, 40, 40, 0.8);
  border-color: rgba(255, 255, 255, 0.1);
  color: var(--luna-text);
}

/* ============================================
   FILE INPUT
   ============================================ */

.luna-file-input {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: var(--luna-space-8);
  border: 2px dashed var(--luna-glass-border);
  border-radius: var(--luna-radius-xl);
  background: var(--luna-glass-light);
  cursor: pointer;
  transition: var(--luna-transition);
  text-align: center;
}

.luna-file-input:hover {
  border-color: var(--luna-primary);
  background: rgba(var(--luna-primary-rgb), 0.05);
}

.luna-file-input.dragover {
  border-color: var(--luna-primary);
  background: rgba(var(--luna-primary-rgb), 0.1);
}

.luna-file-input-icon {
  font-size: 2rem;
  color: var(--luna-text-tertiary);
  margin-bottom: var(--luna-space-3);
}

.luna-file-input-text {
  color: var(--luna-text-secondary);
  font-size: 0.875rem;
}

.luna-file-input-hint {
  color: var(--luna-text-tertiary);
  font-size: 0.75rem;
  margin-top: var(--luna-space-2);
}

/* ============================================
   INPUT GROUPS
   ============================================ */

.luna-input-group {
  display: flex;
}

.luna-input-group .luna-input {
  border-radius: 0;
}

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

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

.luna-input-group-addon {
  display: flex;
  align-items: center;
  padding: 0 0.875rem;
  background: rgba(0, 0, 0, 0.05);
  border: 1px solid rgba(0, 0, 0, 0.1);
  color: var(--luna-text-secondary);
  font-size: 0.875rem;
}

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

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

[data-theme="dark"] .luna-input-group-addon {
  background: rgba(255, 255, 255, 0.05);
  border-color: rgba(255, 255, 255, 0.1);
}