/* ============================================
   表单样式 - 简洁优化版
   ============================================ */

/* 表单组 */
.form-group {
  margin-bottom: 18px;
}

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

/* 标签 - 简洁设计 */
.form-label {
  display: block;
  margin-bottom: 6px;
  font-weight: 600;
  color: var(--text-primary);
  font-size: 13px;
  line-height: 1.4;
}

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

/* 输入框 */
.input-field {
  width: 100%;
  padding: 10px 14px;
  border: 1px solid var(--border-color);
  border-radius: 8px;
  font-size: 14px;
  background: var(--bg-card);
  color: var(--text-primary);
  transition: all 0.15s ease;
}

.input-field:hover {
  border-color: var(--text-muted);
}

.input-field:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px var(--primary-alpha);
}

.input-field::placeholder {
  color: var(--text-muted);
  opacity: 0.7;
}

.input-field:disabled {
  background: var(--bg-secondary);
  cursor: not-allowed;
  opacity: 0.6;
}

/* 输入框带图标 */
.input-with-icon {
  position: relative;
}

.input-with-icon .input-field {
  padding-left: 40px;
}

.input-with-icon .input-icon {
  position: absolute;
  left: 12px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-muted);
  font-size: 16px;
  transition: color 0.2s;
}

.input-with-icon .input-field:focus + .input-icon {
  color: var(--primary);
}

/* 验证状态 */
.input-field.error {
  border-color: var(--danger);
  background-color: var(--danger-alpha);
}

.input-field.error:focus {
  box-shadow: 0 0 0 3px var(--danger-alpha);
}

.input-field.success {
  border-color: var(--success);
}

.input-field.success:focus {
  box-shadow: 0 0 0 3px var(--success-alpha);
}

/* 验证消息 */
.form-error {
  font-size: 12px;
  color: var(--danger);
  margin-top: 4px;
  display: flex;
  align-items: center;
  gap: 4px;
}

.form-success {
  font-size: 12px;
  color: var(--success);
  margin-top: 4px;
  display: flex;
  align-items: center;
  gap: 4px;
}

/* 帮助文本 */
.form-help {
  font-size: 12px;
  color: var(--text-muted);
  margin-top: 6px;
  line-height: 1.5;
}

.form-help code {
  background: var(--bg-secondary);
  padding: 2px 6px;
  border-radius: 4px;
  font-family: ui-monospace, SFMono-Regular, monospace;
  font-size: 11px;
}

/* 输入框组 */
.input-group {
  display: flex;
  gap: 0;
}

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

.input-group .input-field:first-child {
  border-radius: 8px 0 0 8px;
}

.input-group .input-field:last-child {
  border-radius: 0 8px 8px 0;
}

.input-group .btn {
  border-radius: 0 8px 8px 0;
  border-left: none;
}

/* Select 下拉框 */
select.input-field {
  cursor: pointer;
  appearance: none;
  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='%23666' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 12px center;
  padding-right: 32px;
}

[data-theme="dark"] select.input-field {
  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='%23999' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
}

/* Switch 开关 */
.switch {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 12px;
  cursor: pointer;
}

.switch input {
  opacity: 0;
  width: 0;
  height: 0;
  position: absolute;
}

.switch-slider {
  position: relative;
  width: 44px;
  height: 24px;
  background-color: var(--border-color);
  border-radius: 24px;
  transition: 0.2s;
}

.switch-slider::before {
  content: "";
  position: absolute;
  height: 18px;
  width: 18px;
  left: 3px;
  top: 3px;
  background-color: white;
  border-radius: 50%;
  transition: 0.2s;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.2);
}

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

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

.switch-label {
  font-size: 14px;
  color: var(--text-primary);
  font-weight: 500;
}

.switch-description {
  font-size: 12px;
  color: var(--text-muted);
  margin-top: 2px;
}

/* Checkbox 和 Radio */
.checkbox-wrapper,
.radio-wrapper {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  cursor: pointer;
  padding: 10px;
  border-radius: 8px;
  transition: background-color 0.15s;
}

.checkbox-wrapper:hover,
.radio-wrapper:hover {
  background: var(--bg-hover);
}

.checkbox-wrapper input,
.radio-wrapper input {
  width: 18px;
  height: 18px;
  margin-top: 2px;
  cursor: pointer;
  accent-color: var(--primary);
  flex-shrink: 0;
}

.checkbox-content {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.checkbox-label,
.radio-label {
  font-size: 14px;
  color: var(--text-primary);
  font-weight: 500;
  line-height: 1.4;
}

.checkbox-description,
.radio-description {
  font-size: 12px;
  color: var(--text-muted);
  line-height: 1.4;
}

/* 表单卡片 */
.form-card {
  background: var(--bg-secondary);
  padding: 20px;
  border-radius: 10px;
  margin-bottom: 20px;
}

/* 表单网格 */
.form-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 16px;
}

/* 表单堆叠布局 */
.form-stack {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

/* 表单操作按钮组 */
.form-group-actions {
  display: flex;
  align-items: center;
  gap: 8px;
  grid-column: 1 / -1;
  margin-top: 4px;
}

@media (max-width: 768px) {
  .input-group {
    flex-direction: column;
    gap: 8px;
  }

  .input-group .input-field,
  .input-group .btn {
    width: 100%;
    border-radius: 8px;
  }

  .input-group .btn {
    border-left: 1px solid var(--border-color);
  }

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

  .form-group-actions .btn {
    width: 100%;
  }
}