/* ========================================
   フォームコンポーネント
   ======================================== */

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

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

/* Form label */
.form-label {
  display: block;
  margin-bottom: var(--space-2);
  font-size: var(--text-sm);
  font-weight: var(--font-semibold);
  color: var(--text-primary);
}

.form-label-required::after {
  content: '*';
  color: var(--color-error);
  margin-left: var(--space-1);
}

/* Form input */
.form-input {
  width: 100%;
  padding: var(--space-3-5) var(--space-4);
  font-size: var(--text-base);
  font-weight: var(--font-regular);
  color: var(--text-primary);
  background: var(--white);
  border: 2px solid rgba(203, 213, 225, 1);
  border-radius: var(--radius-lg);
  transition: all var(--transition-fast);
  outline: none;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
}

.form-input::placeholder {
  color: var(--text-tertiary);
}

/* Focus state */
.form-input:focus {
  background: var(--white);
  border-color: var(--primary-user);
  box-shadow: 0 0 0 4px rgba(102, 126, 234, 0.1);
  transform: translateY(-1px);
}

[data-theme="admin"] .form-input:focus {
  border-color: var(--primary-admin);
  box-shadow: 0 0 0 4px rgba(255, 107, 107, 0.1);
}

/* Hover state */
.form-input:hover:not(:focus) {
  border-color: rgba(102, 126, 234, 0.5);
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.15);
  transform: translateY(-1px);
}

[data-theme="admin"] .form-input:hover:not(:focus) {
  border-color: rgba(255, 107, 107, 0.3);
}

/* Error state */
.form-input-error {
  border-color: var(--color-error);
  background-color: var(--color-error-light);
}

.form-input-error:focus {
  border-color: var(--color-error);
  box-shadow: 0 0 0 4px rgba(239, 68, 68, 0.1);
}

/* Success state */
.form-input-success {
  border-color: var(--color-success);
  background-color: var(--color-success-light);
}

.form-input-success:focus {
  border-color: var(--color-success);
  box-shadow: 0 0 0 4px rgba(16, 185, 129, 0.1);
}

/* Disabled state */
.form-input:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  background: var(--gray-100);
}

/* Form helper text */
.form-helper {
  margin-top: var(--space-2);
  font-size: var(--text-sm);
  color: var(--text-secondary);
}

.form-helper-error {
  color: var(--color-error);
}

.form-helper-success {
  color: var(--color-success);
}

/* Input with icon */
.form-input-group {
  position: relative;
}

.form-input-icon {
  position: absolute;
  left: var(--space-4);
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-tertiary);
  pointer-events: none;
  transition: color var(--transition-fast);
}

.form-input-group .form-input {
  padding-left: var(--space-12);
}

.form-input-group .form-input:focus ~ .form-input-icon {
  color: var(--primary-user);
}

[data-theme="admin"] .form-input-group .form-input:focus ~ .form-input-icon {
  color: var(--primary-admin);
}

/* Password input */
.form-input-password {
  padding-right: var(--space-12);
}

.password-toggle {
  position: absolute;
  right: var(--space-4);
  top: 50%;
  transform: translateY(-50%);
  cursor: pointer;
  color: var(--text-secondary);
  background: transparent;
  border: none;
  padding: var(--space-2);
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
  display: flex;
  align-items: center;
  justify-content: center;
}

.password-toggle:hover {
  background: var(--gray-100);
  color: var(--text-primary);
}

.password-toggle:focus {
  outline: 2px solid var(--primary-user);
  outline-offset: 2px;
}

/* Enhanced password toggle with CSS states */
.password-toggle .material-symbols-outlined {
  font-size: 20px;
  transition: all var(--transition-fast);
}

/* Password display toggle for read-only passwords */
.password-display-toggle {
  background: none;
  border: none;
  color: var(--text-secondary);
  cursor: pointer;
  padding: var(--space-1) var(--space-2);
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin-left: var(--space-2);
}

.password-display-toggle:hover {
  color: var(--text-primary);
  background: rgba(0, 0, 0, 0.05);
}

.password-display-toggle:focus {
  outline: 2px solid var(--primary-user);
  outline-offset: 2px;
}

.password-display-toggle .material-symbols-outlined {
  font-size: 16px;
  transition: all var(--transition-fast);
}

/* Password strength indicator */
.password-policy {
  margin-top: var(--space-3);
  padding: var(--space-3);
  background: var(--gray-50);
  border-radius: var(--radius-lg);
  border: 1px solid var(--gray-200);
  transition: all var(--transition-fast);
}

.password-policy.is-valid {
  background: var(--color-success-light);
  border-color: var(--color-success);
}

.password-policy.is-invalid {
  background: var(--color-error-light);
  border-color: var(--color-error);
}

.policy-header {
  font-size: var(--text-sm);
  font-weight: var(--font-semibold);
  color: var(--text-secondary);
  margin-bottom: var(--space-2);
}

.policy-rules {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}

.policy-rule {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-sm);
  transition: all var(--transition-fast);
}

.policy-rule.is-valid .rule-icon {
  color: var(--color-success) !important;
}

.policy-rule.is-valid .rule-text {
  color: var(--color-success-dark) !important;
}

.policy-rule.is-invalid .rule-icon {
  color: var(--color-error) !important;
}

.policy-rule.is-invalid .rule-text {
  color: var(--color-error-dark) !important;
}

.rule-icon {
  font-size: 16px;
  transition: all var(--transition-fast);
}

.rule-text {
  transition: all var(--transition-fast);
}

/* Form validation enhancements */
.form-input.error {
  border-color: var(--color-error);
  box-shadow: 0 0 0 3px rgba(239, 68, 68, 0.1);
}

.field-focused .form-input {
  border-color: var(--primary-user);
  box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

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

/* Select */
.form-select {
  appearance: none;
  background: var(--white);
  border: 2px solid rgba(203, 213, 225, 1);
  border-radius: var(--radius-lg);
  transition: all var(--transition-fast);
  outline: none;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
  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='%23718096' d='M10.293 3.293L6 7.586 1.707 3.293A1 1 0 00.293 4.707l5 5a1 1 0 001.414 0l5-5a1 1 0 10-1.414-1.414z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right var(--space-4) center;
  background-size: 16px;
  padding: var(--space-3-5) var(--space-4);
  padding-right: var(--space-12);
  font-size: var(--text-base);
  min-width: 140px;
}

.form-select:hover:not(:focus) {
  border-color: rgba(102, 126, 234, 0.5);
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.15);
  transform: translateY(-1px);
}

.form-select:focus {
  background: var(--white);
  border-color: var(--primary-user);
  box-shadow: 0 0 0 4px rgba(102, 126, 234, 0.1);
  transform: translateY(-1px);
}

[data-theme="admin"] .form-select:hover:not(:focus) {
  border-color: rgba(255, 107, 107, 0.3);
}

[data-theme="admin"] .form-select:focus {
  border-color: var(--primary-admin);
  box-shadow: 0 0 0 4px rgba(255, 107, 107, 0.1);
}

/* Checkbox & Radio */
.form-checkbox,
.form-radio {
  position: relative;
  display: inline-flex;
  align-items: center;
  cursor: pointer;
  user-select: none;
}

.form-checkbox input,
.form-radio input {
  position: absolute;
  opacity: 0;
  cursor: pointer;
}

.form-checkbox-mark,
.form-radio-mark {
  width: 20px;
  height: 20px;
  border: 2px solid var(--gray-400);
  background: var(--white);
  transition: all var(--transition-fast);
  position: relative;
  flex-shrink: 0;
}

.form-checkbox-mark {
  border-radius: var(--radius-md);
}

.form-radio-mark {
  border-radius: var(--radius-full);
}

/* Checked state */
.form-checkbox input:checked ~ .form-checkbox-mark,
.form-radio input:checked ~ .form-radio-mark {
  background: var(--primary-user);
  border-color: var(--primary-user);
}

[data-theme="admin"] .form-checkbox input:checked ~ .form-checkbox-mark,
[data-theme="admin"] .form-radio input:checked ~ .form-radio-mark {
  background: var(--primary-admin);
  border-color: var(--primary-admin);
}

/* Check mark */
.form-checkbox input:checked ~ .form-checkbox-mark::after {
  content: '';
  position: absolute;
  left: 6px;
  top: 2px;
  width: 6px;
  height: 10px;
  border: solid var(--white);
  border-width: 0 2px 2px 0;
  transform: rotate(45deg);
}

.form-radio input:checked ~ .form-radio-mark::after {
  content: '';
  position: absolute;
  left: 50%;
  top: 50%;
  width: 8px;
  height: 8px;
  background: var(--white);
  border-radius: var(--radius-full);
  transform: translate(-50%, -50%);
}

/* Focus state */
.form-checkbox input:focus ~ .form-checkbox-mark,
.form-radio input:focus ~ .form-radio-mark {
  box-shadow: 0 0 0 4px rgba(102, 126, 234, 0.1);
}

[data-theme="admin"] .form-checkbox input:focus ~ .form-checkbox-mark,
[data-theme="admin"] .form-radio input:focus ~ .form-radio-mark {
  box-shadow: 0 0 0 4px rgba(255, 107, 107, 0.1);
}

/* Label */
.form-checkbox-label,
.form-radio-label {
  margin-left: var(--space-2);
  font-size: var(--text-base);
  color: var(--text-primary);
}

/* Form actions */
.form-actions {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  margin-top: var(--space-8);
}

.form-actions-right {
  justify-content: flex-end;
}

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

.form-actions-between {
  justify-content: space-between;
}

/* Responsive */
@media (max-width: 768px) {
  .form-group {
    margin-bottom: var(--space-4);
  }
  
  .form-input {
    padding: var(--space-3) var(--space-3);
    font-size: var(--text-sm);
  }
  
  .password-toggle,
  .password-display-toggle {
    right: var(--space-2);
    padding: var(--space-1);
  }
  
  .password-toggle .material-symbols-outlined,
  .password-display-toggle .material-symbols-outlined {
    font-size: 18px;
  }
  
  .form-actions {
    flex-direction: column;
    gap: var(--space-3);
  }
  
  .form-actions > * {
    width: 100%;
  }
}

/* Accessibility improvements */
@media (prefers-reduced-motion: reduce) {
  .password-toggle,
  .password-display-toggle,
  .password-policy,
  .policy-rule,
  .rule-icon,
  .rule-text {
    transition: none !important;
  }
}

/* Focus improvements for keyboard navigation */
.password-toggle:focus-visible,
.password-display-toggle:focus-visible {
  outline: 2px solid var(--primary-user);
  outline-offset: 2px;
}