/* ==========================================================================
   表单组件 (Form Components)
   包含输入框、文本域、选择器、复选框、单选框、开关等表单控件。
   支持尺寸变体、图标前缀、禁用和错误状态。
   ========================================================================== */

/* --- 表单字段容器：标签 + 控件 + 提示/错误信息的纵向布局 --- */
.zuoekai-form-field {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.zuoekai-form-field--inline {
  flex-direction: row;
  flex-wrap: nowrap;
  align-items: center;
}

.zuoekai-form-field--inline > .zuoekai-form-field__label {
  margin: 0;
  white-space: nowrap;
  flex: none;
}

.zuoekai-form-field--inline > .zuoekai-input,
.zuoekai-form-field--inline > .zuoekai-select,
.zuoekai-form-field--inline > .zuoekai-input-with-icon,
.zuoekai-form-field--inline > .zuoekai-form-field__row {
  flex: 0 0 auto;
  width: auto;
}

.zuoekai-form-field--inherit-color,
.zuoekai-form-field--inherit-color .zuoekai-form-field__label,
.zuoekai-form-field--inherit-color .zuoekai-form-field__hint,
.zuoekai-form-field--inherit-color .zuoekai-form-field__error {
  color: inherit;
}

.zuoekai-form-field__control--compact {
  width: 180px;
  flex-basis: 180px;
}

/* 字段标签 */
.zuoekai-form-field__label {
  font-size: 13px;
  font-weight: 600;
  color: var(--zuoekai-color-text);
}

/* 字段提示文本 */
.zuoekai-form-field__hint {
  font-size: 12px;
  color: var(--zuoekai-color-text-muted);
}

/* 字段横排容器：控件 + 按钮水平并排（如 select + 日历按钮） */
.zuoekai-form-field__row {
  display: flex;
  align-items: center;
  gap: 8px;
}

/* 字段错误文本 */
.zuoekai-form-field__error {
  font-size: 12px;
  color: var(--zuoekai-color-error-600);
}

/* 字段禁用状态 */
.zuoekai-form-field--disabled {
  opacity: 0.75;
}

/* --- 输入框 (Input)：支持 --sm / --lg 尺寸、图标前缀、禁用状态 --- */
.zuoekai-input {
  width: 100%;
  height: 40px;
  padding: 0 12px;
  border-radius: var(--zuoekai-radius-md);
  border: 1px solid var(--zuoekai-color-border);
  background: var(--zuoekai-color-surface-panel);
  color: var(--zuoekai-color-text);
  font-family: var(--zuoekai-font-family-sans);
  font-size: 14px;
  line-height: 1;
  transition:
    border-color var(--zuoekai-motion-duration-fast) var(--zuoekai-motion-ease-out),
    box-shadow var(--zuoekai-motion-duration-fast) var(--zuoekai-motion-ease-out),
    background var(--zuoekai-motion-duration-fast) var(--zuoekai-motion-ease-out);
}

.zuoekai-input::placeholder {
  color: var(--zuoekai-color-text-muted);
}

.zuoekai-input:focus-visible {
  outline: none;
  border-color: var(--zuoekai-color-brand-600);
  box-shadow: var(--zuoekai-focus-ring);
}

.zuoekai-input:disabled {
  cursor: not-allowed;
  color: var(--zuoekai-color-text-disabled);
  background: rgba(0, 0, 0, 0.02);
}

/* 输入框 - 小号 */
.zuoekai-input--sm {
  height: 34px;
  padding: 0 10px;
  font-size: 13px;
  border-radius: var(--zuoekai-radius-sm);
}

/* 输入框 - 大号 */
.zuoekai-input--lg {
  height: 46px;
  padding: 0 14px;
  font-size: 15px;
  border-radius: var(--zuoekai-radius-lg);
}

/* 输入框 - 颜色选择器变体：用于 <input type="color">，固定尺寸、圆角边框 */
.zuoekai-input--color {
  width: 60px;
  height: 36px;
  padding: 2px;
  border: 1px solid var(--zuoekai-color-border);
  border-radius: 0.375rem;
  cursor: pointer;
  background: var(--zuoekai-color-surface-panel);
}

.zuoekai-input--color:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

/* 带图标的输入框容器 */
.zuoekai-input-with-icon {
  position: relative;
}

.zuoekai-input-with-icon .zuoekai-input {
  padding-left: 38px;
}

/* 输入框内图标：左侧垂直居中 */
.zuoekai-input-with-icon__icon {
  position: absolute;
  left: 12px;
  top: 50%;
  transform: translateY(-50%);
  width: 18px;
  height: 18px;
  color: var(--zuoekai-color-text-muted);
}

/* --- 文本域 (Textarea)：支持 --sm / --lg 尺寸、垂直拖拽调整 --- */
.zuoekai-textarea {
  width: 100%;
  min-height: 96px;
  padding: 10px 12px;
  border-radius: var(--zuoekai-radius-md);
  border: 1px solid var(--zuoekai-color-border);
  background: var(--zuoekai-color-surface-panel);
  color: var(--zuoekai-color-text);
  font-family: var(--zuoekai-font-family-sans);
  font-size: 14px;
  line-height: 1.5;
  resize: vertical;
  transition:
    border-color var(--zuoekai-motion-duration-fast) var(--zuoekai-motion-ease-out),
    box-shadow var(--zuoekai-motion-duration-fast) var(--zuoekai-motion-ease-out),
    background var(--zuoekai-motion-duration-fast) var(--zuoekai-motion-ease-out);
}

.zuoekai-textarea::placeholder {
  color: var(--zuoekai-color-text-muted);
}

.zuoekai-textarea:focus-visible {
  outline: none;
  border-color: var(--zuoekai-color-brand-600);
  box-shadow: var(--zuoekai-focus-ring);
}

.zuoekai-textarea:disabled {
  cursor: not-allowed;
  color: var(--zuoekai-color-text-disabled);
  background: rgba(0, 0, 0, 0.02);
}

/* 文本域 - 小号 */
.zuoekai-textarea--sm {
  min-height: 80px;
  padding: 8px 10px;
  font-size: 13px;
  border-radius: var(--zuoekai-radius-sm);
}

/* 文本域 - 大号 */
.zuoekai-textarea--lg {
  min-height: 120px;
  padding: 12px 14px;
  font-size: 15px;
  border-radius: var(--zuoekai-radius-lg);
}

/* --- 选择器 (Select)：自带下拉箭头图标，支持 --sm / --lg 尺寸 --- */
.zuoekai-select {
  width: 100%;
  height: 40px;
  padding: 0 38px 0 12px;
  border-radius: var(--zuoekai-radius-md);
  border: 1px solid var(--zuoekai-color-border);
  background-color: var(--zuoekai-color-surface-panel);
  color: var(--zuoekai-color-text);
  font-family: var(--zuoekai-font-family-sans);
  font-size: 14px;
  line-height: 1;
  appearance: none;
  -webkit-appearance: none;
  -moz-appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='20' height='20' 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/svg%3E");
  background-repeat: no-repeat;
  background-position: right 12px center;
  background-size: 18px 18px;
  transition:
    border-color var(--zuoekai-motion-duration-fast) var(--zuoekai-motion-ease-out),
    box-shadow var(--zuoekai-motion-duration-fast) var(--zuoekai-motion-ease-out),
    background var(--zuoekai-motion-duration-fast) var(--zuoekai-motion-ease-out);
}

.zuoekai-select:focus-visible {
  outline: none;
  border-color: var(--zuoekai-color-brand-600);
  box-shadow: var(--zuoekai-focus-ring);
}

.zuoekai-select:disabled {
  cursor: not-allowed;
  color: var(--zuoekai-color-text-disabled);
  background-color: rgba(0, 0, 0, 0.02);
}

/* 选择器 - 小号 */
.zuoekai-select--sm {
  height: 34px;
  padding: 0 34px 0 10px;
  font-size: 13px;
  border-radius: var(--zuoekai-radius-sm);
  background-position: right 10px center;
}

/* 选择器 - 大号 */
.zuoekai-select--lg {
  height: 46px;
  padding: 0 42px 0 14px;
  font-size: 15px;
  border-radius: var(--zuoekai-radius-lg);
  background-position: right 14px center;
}

/* --- 复选框 (Checkbox)：隐藏原生 input + 自定义方块、勾选动画 --- */
.zuoekai-checkbox {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  cursor: pointer;
  user-select: none;
  color: var(--zuoekai-color-text);
  font-size: 14px;
}

.zuoekai-checkbox__input {
  position: absolute;
  opacity: 0;
  width: 1px;
  height: 1px;
  overflow: hidden;
}

.zuoekai-checkbox__box {
  width: 18px;
  height: 18px;
  border-radius: 6px;
  border: 1px solid var(--zuoekai-color-border-strong);
  background: var(--zuoekai-color-surface-panel);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition:
    background var(--zuoekai-motion-duration-fast) var(--zuoekai-motion-ease-out),
    border-color var(--zuoekai-motion-duration-fast) var(--zuoekai-motion-ease-out),
    box-shadow var(--zuoekai-motion-duration-fast) var(--zuoekai-motion-ease-out);
}

.zuoekai-checkbox__box::after {
  content: '';
  width: 10px;
  height: 6px;
  border-left: 2px solid transparent;
  border-bottom: 2px solid transparent;
  transform: rotate(-45deg);
  margin-top: -1px;
}

.zuoekai-checkbox__input:checked + .zuoekai-checkbox__box {
  background: var(--zuoekai-color-brand-600);
  border-color: var(--zuoekai-color-brand-600);
}

.zuoekai-checkbox__input:checked + .zuoekai-checkbox__box::after {
  border-left-color: rgba(255, 255, 255, 0.95);
  border-bottom-color: rgba(255, 255, 255, 0.95);
}

.zuoekai-checkbox__input:focus-visible + .zuoekai-checkbox__box {
  outline: none;
  box-shadow: var(--zuoekai-focus-ring);
}

.zuoekai-checkbox__input:disabled + .zuoekai-checkbox__box {
  cursor: not-allowed;
  opacity: 0.65;
}

.zuoekai-checkbox--disabled {
  cursor: not-allowed;
  color: var(--zuoekai-color-text-disabled);
}

/* --- 单选框 (Radio)：隐藏原生 input + 自定义圆形、选中圆点 --- */
.zuoekai-radio {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  cursor: pointer;
  user-select: none;
  color: var(--zuoekai-color-text);
  font-size: 14px;
}

.zuoekai-radio__input {
  position: absolute;
  opacity: 0;
  width: 1px;
  height: 1px;
  overflow: hidden;
}

.zuoekai-radio__dot {
  width: 18px;
  height: 18px;
  border-radius: 999px;
  border: 1px solid var(--zuoekai-color-border-strong);
  background: var(--zuoekai-color-surface-panel);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition:
    background var(--zuoekai-motion-duration-fast) var(--zuoekai-motion-ease-out),
    border-color var(--zuoekai-motion-duration-fast) var(--zuoekai-motion-ease-out),
    box-shadow var(--zuoekai-motion-duration-fast) var(--zuoekai-motion-ease-out);
}

.zuoekai-radio__dot::after {
  content: '';
  width: 8px;
  height: 8px;
  border-radius: 999px;
  background: transparent;
}

.zuoekai-radio__input:checked + .zuoekai-radio__dot {
  border-color: var(--zuoekai-color-brand-600);
}

.zuoekai-radio__input:checked + .zuoekai-radio__dot::after {
  background: var(--zuoekai-color-brand-600);
}

.zuoekai-radio__input:focus-visible + .zuoekai-radio__dot {
  outline: none;
  box-shadow: var(--zuoekai-focus-ring);
}

.zuoekai-radio__input:disabled + .zuoekai-radio__dot {
  cursor: not-allowed;
  opacity: 0.65;
}

.zuoekai-radio--disabled {
  cursor: not-allowed;
  color: var(--zuoekai-color-text-disabled);
}

/* --- 开关 (Switch)：iOS 风格滑动开关，隐藏原生 input + 自定义轨道和滑块 --- */
.zuoekai-switch {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  cursor: pointer;
  user-select: none;
  color: var(--zuoekai-color-text);
  font-size: 14px;
}

.zuoekai-switch__input {
  position: absolute;
  opacity: 0;
  width: 1px;
  height: 1px;
  overflow: hidden;
}

.zuoekai-switch__track {
  width: 40px;
  height: 22px;
  border-radius: 999px;
  background: var(--zuoekai-color-border-strong);
  position: relative;
  transition:
    background var(--zuoekai-motion-duration-fast) var(--zuoekai-motion-ease-out),
    box-shadow var(--zuoekai-motion-duration-fast) var(--zuoekai-motion-ease-out);
}

.zuoekai-switch__thumb {
  width: 18px;
  height: 18px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.95);
  position: absolute;
  top: 2px;
  left: 2px;
  transition: transform var(--zuoekai-motion-duration-fast) var(--zuoekai-motion-ease-out);
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.18);
}

.zuoekai-switch__input:checked + .zuoekai-switch__track {
  background: var(--zuoekai-color-brand-600);
}

.zuoekai-switch__input:checked + .zuoekai-switch__track .zuoekai-switch__thumb {
  transform: translateX(18px);
}

.zuoekai-switch__input:focus-visible + .zuoekai-switch__track {
  outline: none;
  box-shadow: var(--zuoekai-focus-ring);
}

.zuoekai-switch__input:disabled + .zuoekai-switch__track {
  cursor: not-allowed;
  opacity: 0.65;
}

.zuoekai-switch--disabled {
  cursor: not-allowed;
  color: var(--zuoekai-color-text-disabled);
}