/**
 * ZWDS Form Styles - Ant Design Compatible
 * Based on analysis of https://ziwei.pub/astrolabe/ styling
 * 
 * Features:
 * - Ant Design component styling without dependency
 * - Mobile-first responsive design
 * - Accessibility compliance (WCAG 2.1)
 * - Traditional Chinese design elements
 * - Five Elements color theming
 * - Touch-friendly interactions
 */

/* CSS Variables for theming */
:root {
  /* Ant Design Colors */
  --ant-primary-color: #1890ff;
  --ant-success-color: #52c41a;
  --ant-warning-color: #faad14;
  --ant-error-color: #ff4d4f;
  --ant-info-color: #13c2c2;

  /* Five Elements Colors */
  --element-wood: #52c41a;
  --element-fire: #f5222d;
  --element-earth: #fa8c16;
  --element-metal: #722ed1;
  --element-water: #1890ff;

  /* Neutral Colors */
  --color-text: rgba(0, 0, 0, 0.85);
  --color-text-secondary: rgba(0, 0, 0, 0.65);
  --color-text-disabled: rgba(0, 0, 0, 0.25);
  --color-border: #d9d9d9;
  --color-border-secondary: #f0f0f0;
  --color-fill: #fafafa;
  --color-bg: #ffffff;

  /* Form Specific */
  --form-item-margin-bottom: 24px;
  --form-vertical-label-margin: 0 0 8px;
  --input-height-base: 40px;
  --input-padding-horizontal: 12px;
  --input-padding-vertical: 4px;
  --border-radius-base: 6px;
  --font-size-base: 14px;
  --line-height-base: 1.5715;

  /* Touch Targets */
  --touch-target-min: 44px;
}

/* ============================================ */
/* ZWDS Form Components - Ant Design Style     */
/* ============================================ */

/* Form Container */
.zwds-form {
  width: 100%;
  max-width: 100%;
}

.zwds-form-container {
  padding: var(--form-item-margin-bottom);
}

/* Form Layout */
.zwds-form-vertical .zwds-form-item-label {
  padding: var(--form-vertical-label-margin);
  text-align: left;
}

.zwds-form-horizontal .zwds-form-item-label {
  text-align: right;
  padding: 0 12px 0 0;
}

/* Form Item */
.zwds-form-item {
  margin-bottom: var(--form-item-margin-bottom);
  display: flex;
  flex-direction: column;
}

.zwds-form-item-required .zwds-form-item-label::before {
  content: "*";
  color: var(--ant-error-color);
  margin-right: 4px;
  font-family: SimSun, sans-serif;
}

.zwds-form-item-label {
  font-size: var(--font-size-base);
  line-height: var(--line-height-base);
  color: var(--color-text);
  text-align: left;
  margin-bottom: 8px;
  font-weight: 500;
}

.zwds-form-item-control {
  position: relative;
  display: flex;
  flex-direction: column;
  flex: 1;
}

/* Input Styles */
.zwds-input,
.zwds-select,
.zwds-date-picker {
  position: relative;
  display: inline-block;
  width: 100%;
  min-width: 0;
  padding: var(--input-padding-vertical) var(--input-padding-horizontal);
  color: var(--color-text);
  font-size: var(--font-size-base);
  line-height: var(--line-height-base);
  background-color: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius-base);
  transition: all 0.3s;
  height: var(--input-height-base);
  box-sizing: border-box;
}

.zwds-input:hover,
.zwds-select:hover,
.zwds-date-picker:hover {
  border-color: var(--ant-primary-color);
  border-right-width: 1px !important;
}

.zwds-input:focus,
.zwds-select:focus,
.zwds-date-picker:focus {
  border-color: var(--ant-primary-color);
  box-shadow: 0 0 0 2px rgba(24, 144, 255, 0.2);
  border-right-width: 1px !important;
  outline: 0;
}

.zwds-input-disabled,
.zwds-select-disabled,
.zwds-date-picker-disabled {
  color: var(--color-text-disabled);
  background-color: var(--color-fill);
  border-color: var(--color-border);
  cursor: not-allowed;
}

.zwds-input-disabled:hover,
.zwds-select-disabled:hover,
.zwds-date-picker-disabled:hover {
  border-color: var(--color-border);
}

/* Input Group */
.zwds-input-group {
  position: relative;
  display: table;
  width: 100%;
  border-collapse: separate;
  border-spacing: 0;
}

.zwds-input-group-addon {
  position: relative;
  padding: 0 12px;
  color: var(--color-text);
  font-weight: normal;
  font-size: var(--font-size-base);
  text-align: center;
  background-color: var(--color-fill);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius-base);
  vertical-align: top;
  display: table-cell;
  width: 1px;
  white-space: nowrap;
}

/* Select Styles */
.zwds-select {
  cursor: pointer;
  background-color: var(--color-bg);
  position: relative;
}

.zwds-select::after {
  content: "";
  position: absolute;
  top: 50%;
  right: 12px;
  margin-top: -3px;
  width: 0;
  height: 0;
  border-left: 5px solid transparent;
  border-right: 5px solid transparent;
  border-top: 5px solid var(--color-text-secondary);
  pointer-events: none;
}

.zwds-select:focus::after {
  border-top-color: var(--ant-primary-color);
}

/* Radio Group */
.zwds-radio-group {
  display: inline-block;
}

.zwds-radio-wrapper {
  position: relative;
  display: inline-flex;
  align-items: center;
  margin-right: 16px;
  white-space: nowrap;
  cursor: pointer;
  min-height: var(--touch-target-min);
}

.zwds-radio {
  position: relative;
  display: inline-block;
  white-space: nowrap;
  cursor: pointer;
}

.zwds-radio-input {
  position: absolute;
  top: 0;
  right: 0;
  bottom: 0;
  left: 0;
  z-index: 1;
  width: 100%;
  height: 100%;
  cursor: pointer;
  opacity: 0;
}

.zwds-radio-inner {
  position: relative;
  top: 0;
  left: 0;
  display: block;
  width: 16px;
  height: 16px;
  background-color: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: 50%;
  transition: all 0.3s;
}

.zwds-radio-input:hover + .zwds-radio-inner {
  border-color: var(--ant-primary-color);
}

.zwds-radio-input:checked + .zwds-radio-inner {
  border-color: var(--ant-primary-color);
  background-color: var(--ant-primary-color);
}

.zwds-radio-input:checked + .zwds-radio-inner::after {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  width: 8px;
  height: 8px;
  margin-top: -4px;
  margin-left: -4px;
  background-color: #fff;
  border-radius: 50%;
  transition: all 0.3s cubic-bezier(0.78, 0.14, 0.15, 0.86);
  transform: scale(1);
}

.zwds-radio-wrapper span {
  padding-right: 8px;
  padding-left: 8px;
}

/* Checkbox */
.zwds-checkbox-wrapper {
  position: relative;
  display: inline-flex;
  align-items: center;
  margin-right: 16px;
  white-space: nowrap;
  cursor: pointer;
  min-height: var(--touch-target-min);
}

.zwds-checkbox {
  position: relative;
  display: inline-block;
  white-space: nowrap;
  cursor: pointer;
}

.zwds-checkbox-input {
  position: absolute;
  top: 0;
  right: 0;
  bottom: 0;
  left: 0;
  z-index: 1;
  width: 100%;
  height: 100%;
  cursor: pointer;
  opacity: 0;
}

.zwds-checkbox-inner {
  position: relative;
  top: 0;
  left: 0;
  display: block;
  width: 16px;
  height: 16px;
  background-color: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius-base);
  transition: all 0.3s;
}

.zwds-checkbox-input:hover + .zwds-checkbox-inner {
  border-color: var(--ant-primary-color);
}

.zwds-checkbox-input:checked + .zwds-checkbox-inner {
  background-color: var(--ant-primary-color);
  border-color: var(--ant-primary-color);
}

.zwds-checkbox-input:checked + .zwds-checkbox-inner::after {
  content: "";
  position: absolute;
  top: 1px;
  left: 4px;
  width: 6px;
  height: 10px;
  border: 2px solid #fff;
  border-top: 0;
  border-left: 0;
  transform: rotate(45deg) scale(1);
  transition: all 0.2s cubic-bezier(0.12, 0.4, 0.29, 1.46) 0.1s;
}

.zwds-checkbox-wrapper span {
  padding-right: 8px;
  padding-left: 8px;
}

/* Button Styles */
.zwds-btn {
  position: relative;
  display: inline-block;
  font-weight: 400;
  white-space: nowrap;
  text-align: center;
  background-image: none;
  border: 1px solid transparent;
  cursor: pointer;
  transition: all 0.3s cubic-bezier(0.645, 0.045, 0.355, 1);
  user-select: none;
  touch-action: manipulation;
  height: var(--input-height-base);
  padding: 0 16px;
  font-size: var(--font-size-base);
  border-radius: var(--border-radius-base);
  color: var(--color-text);
  background-color: var(--color-bg);
  border-color: var(--color-border);
  min-height: var(--touch-target-min);
}

.zwds-btn:hover {
  color: var(--ant-primary-color);
  background-color: var(--color-bg);
  border-color: var(--ant-primary-color);
}

.zwds-btn:focus {
  color: var(--ant-primary-color);
  background-color: var(--color-bg);
  border-color: var(--ant-primary-color);
  box-shadow: 0 0 0 2px rgba(24, 144, 255, 0.2);
}

.zwds-btn-primary {
  color: #fff;
  background-color: var(--ant-primary-color);
  border-color: var(--ant-primary-color);
}

.zwds-btn-primary:hover {
  color: #fff;
  background-color: #40a9ff;
  border-color: #40a9ff;
}

.zwds-btn-primary:focus {
  color: #fff;
  background-color: #40a9ff;
  border-color: #40a9ff;
  box-shadow: 0 0 0 2px rgba(24, 144, 255, 0.2);
}

.zwds-btn-primary:active {
  color: #fff;
  background-color: #096dd9;
  border-color: #096dd9;
}

.zwds-btn-large {
  height: 48px;
  padding: 0 24px;
  font-size: 16px;
  border-radius: var(--border-radius-base);
}

.zwds-btn-block {
  width: 100%;
}

/* Date Picker Specific */
.zwds-date-picker {
  position: relative;
}

.zwds-date-picker::after {
  content: "📅";
  position: absolute;
  top: 50%;
  right: 12px;
  transform: translateY(-50%);
  pointer-events: none;
  color: var(--color-text-secondary);
}

/* Time Selector Grid */
.zwds-time-selector {
  margin: 16px 0;
}

.zwds-time-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 8px;
  margin-top: 12px;
}

.zwds-time-option {
  padding: 12px 8px;
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius-base);
  text-align: center;
  cursor: pointer;
  transition: all 0.3s;
  background-color: var(--color-bg);
  font-size: var(--font-size-base);
  min-height: var(--touch-target-min);
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
}

.zwds-time-option:hover {
  border-color: var(--ant-primary-color);
  background-color: rgba(24, 144, 255, 0.1);
}

.zwds-time-option.selected {
  background-color: var(--ant-primary-color);
  border-color: var(--ant-primary-color);
  color: #fff;
}

.zwds-time-option .time-period {
  font-weight: 600;
  margin-bottom: 4px;
}

.zwds-time-option .time-range {
  font-size: 12px;
  opacity: 0.8;
}

/* Form Validation */
.zwds-form-item-has-error .zwds-input,
.zwds-form-item-has-error .zwds-select,
.zwds-form-item-has-error .zwds-date-picker {
  border-color: var(--ant-error-color);
}

.zwds-form-item-has-error .zwds-input:focus,
.zwds-form-item-has-error .zwds-select:focus,
.zwds-form-item-has-error .zwds-date-picker:focus {
  border-color: var(--ant-error-color);
  box-shadow: 0 0 0 2px rgba(255, 77, 79, 0.2);
}

.zwds-form-item-explain {
  font-size: var(--font-size-base);
  line-height: 1.5715;
  color: var(--ant-error-color);
  margin-top: 4px;
  min-height: 24px;
}

.zwds-form-item-explain-error {
  color: var(--ant-error-color);
}

.zwds-form-item-explain-success {
  color: var(--ant-success-color);
}

.zwds-form-item-explain-warning {
  color: var(--ant-warning-color);
}

/* Form Actions */
.zwds-form-actions {
  margin-top: 32px;
  display: flex;
  gap: 12px;
  justify-content: flex-end;
}

.zwds-form-actions .zwds-btn {
  min-width: 100px;
}

/* Mobile Responsive */
@media (max-width: 768px) {
  .zwds-form-item {
    margin-bottom: 20px;
  }

  .zwds-time-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
  }

  .zwds-radio-wrapper,
  .zwds-checkbox-wrapper {
    margin-bottom: 12px;
    width: 100%;
  }

  .zwds-form-actions {
    flex-direction: column;
    gap: 8px;
  }

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

@media (max-width: 480px) {
  .zwds-time-grid {
    grid-template-columns: 1fr;
  }

  .zwds-time-option {
    padding: 16px 12px;
  }

  .zwds-input,
  .zwds-select,
  .zwds-date-picker,
  .zwds-btn {
    height: 48px;
    font-size: 16px; /* Prevents zoom on iOS */
  }
}

/* Calendar Toggle Styles */
.zwds-calendar-toggle {
  margin: 20px 0;
  padding: 16px;
  background: var(--color-fill);
  border-radius: var(--border-radius-base);
  border: 1px solid var(--color-border-secondary);
}

.zwds-calendar-toggle-title {
  font-weight: 600;
  margin-bottom: 12px;
  color: var(--color-text);
}

.zwds-radio-group {
  display: flex;
  gap: 24px;
}

/* Leap Month Indicator */
.zwds-leap-indicator {
  margin-top: 12px;
  padding: 8px 12px;
  background: rgba(24, 144, 255, 0.1);
  border: 1px solid rgba(24, 144, 255, 0.3);
  border-radius: var(--border-radius-base);
  font-size: var(--font-size-base);
  color: var(--ant-primary-color);
}

/* Loading State */
.zwds-form-loading {
  position: relative;
  overflow: hidden;
}

.zwds-form-loading::after {
  content: "";
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.4), transparent);
  animation: loading 1.5s infinite;
}

@keyframes loading {
  0% {
    left: -100%;
  }
  100% {
    left: 100%;
  }
}

/* Success State */
.zwds-form-success .zwds-input,
.zwds-form-success .zwds-select,
.zwds-form-success .zwds-date-picker {
  border-color: var(--ant-success-color);
}

/* Five Elements Enhancement */
.zwds-form.element-wood {
  --form-accent-color: var(--element-wood);
}

.zwds-form.element-fire {
  --form-accent-color: var(--element-fire);
}

.zwds-form.element-earth {
  --form-accent-color: var(--element-earth);
}

.zwds-form.element-metal {
  --form-accent-color: var(--element-metal);
}

.zwds-form.element-water {
  --form-accent-color: var(--element-water);
}

.form-header {
  text-align: center;
  margin-bottom: 32px;
  padding-bottom: 24px;
  border-bottom: 1px solid var(--color-border-secondary);
}

.form-header h2 {
  margin: 0 0 8px;
  color: var(--color-text);
  font-size: 24px;
  font-weight: 600;
  line-height: 1.35;
}

.form-header p {
  margin: 0;
  color: var(--color-text-secondary);
  font-size: var(--font-size-base);
}

/* Ant Design Form Item */
.ant-form-item {
  margin-bottom: var(--form-item-margin-bottom);
}

.ant-form-item-label {
  display: block;
  margin: var(--form-vertical-label-margin);
  font-size: var(--font-size-base);
  line-height: var(--line-height-base);
}

.ant-form-item-label-text {
  color: var(--color-text);
  font-weight: 500;
  position: relative;
}

.ant-form-item-required .ant-form-item-label-text::before {
  content: "*";
  color: var(--ant-error-color);
  font-size: var(--font-size-base);
  margin-right: 4px;
  position: relative;
  top: -1px;
}

.ant-form-item-control {
  position: relative;
  min-height: var(--input-height-base);
}

/* Input Styling */
.ant-input {
  position: relative;
  display: inline-block;
  width: 100%;
  min-width: 0;
  padding: var(--input-padding-vertical) var(--input-padding-horizontal);
  color: var(--color-text);
  font-size: var(--font-size-base);
  line-height: var(--line-height-base);
  background-color: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius-base);
  transition: all 0.3s cubic-bezier(0.645, 0.045, 0.355, 1);
  box-sizing: border-box;
  height: var(--input-height-base);
}

.ant-input:hover {
  border-color: var(--ant-primary-color);
  border-right-width: 1px;
}

.ant-input:focus,
.ant-input.ant-input-focused {
  border-color: var(--ant-primary-color);
  box-shadow: 0 0 0 2px rgba(24, 144, 255, 0.2);
  border-right-width: 1px;
  outline: 0;
}

.ant-input::placeholder {
  color: var(--color-text-disabled);
  user-select: none;
}

.ant-input[disabled] {
  color: var(--color-text-disabled);
  background-color: var(--color-fill);
  border-color: var(--color-border);
  cursor: not-allowed;
}

/* Radio Button Group */
.radio-group {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.radio-button {
  position: relative;
  display: inline-flex;
  align-items: center;
  height: var(--input-height-base);
  padding: var(--input-padding-vertical) var(--input-padding-horizontal);
  color: var(--color-text);
  font-size: var(--font-size-base);
  line-height: var(--line-height-base);
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius-base);
  cursor: pointer;
  transition: all 0.3s cubic-bezier(0.645, 0.045, 0.355, 1);
  user-select: none;
  min-height: var(--touch-target-min);
  min-width: var(--touch-target-min);
  justify-content: center;
}

.radio-button:hover {
  border-color: var(--ant-primary-color);
  color: var(--ant-primary-color);
}

.radio-button input {
  position: absolute;
  opacity: 0;
  width: 0;
  height: 0;
}

.radio-button input:checked + .radio-button-text,
.radio-button input:checked ~ .radio-button-text {
  color: var(--color-bg);
}

.radio-button:has(input:checked) {
  background: var(--ant-primary-color);
  border-color: var(--ant-primary-color);
  color: var(--color-bg);
}

.radio-button-text {
  font-weight: 500;
}

/* Regular Radio Options */
.radio-option {
  display: flex;
  align-items: center;
  margin: 8px 0;
  padding: 8px 12px;
  cursor: pointer;
  border-radius: var(--border-radius-base);
  transition: background-color 0.3s ease;
  min-height: var(--touch-target-min);
}

.radio-option:hover {
  background-color: var(--color-fill);
}

.radio-option input {
  margin-right: 8px;
  width: 16px;
  height: 16px;
}

.radio-text {
  font-size: var(--font-size-base);
  color: var(--color-text);
}

/* Checkbox Styling */
.checkbox-label {
  display: flex;
  align-items: center;
  cursor: pointer;
  font-size: var(--font-size-base);
  color: var(--color-text);
  padding: 8px 0;
  min-height: var(--touch-target-min);
}

.ant-checkbox-input {
  margin-right: 8px;
  width: 16px;
  height: 16px;
}

.checkbox-text {
  user-select: none;
}

/* Time Selector Styling */
.time-selector {
  position: relative;
  width: 100%;
}

.selector-wrapper {
  position: relative;
  display: flex;
  align-items: center;
  padding: var(--input-padding-vertical) var(--input-padding-horizontal);
  color: var(--color-text);
  font-size: var(--font-size-base);
  line-height: var(--line-height-base);
  background-color: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius-base);
  cursor: pointer;
  transition: all 0.3s cubic-bezier(0.645, 0.045, 0.355, 1);
  height: var(--input-height-base);
  min-height: var(--touch-target-min);
}

.selector-wrapper:hover {
  border-color: var(--ant-primary-color);
}

.time-selector.open .selector-wrapper,
.selector-wrapper:focus-within {
  border-color: var(--ant-primary-color);
  box-shadow: 0 0 0 2px rgba(24, 144, 255, 0.2);
}

.selector-content {
  flex: 1;
  overflow: hidden;
}

.selector-content .placeholder {
  color: var(--color-text-disabled);
}

.time-label {
  display: block;
  font-weight: 500;
  color: var(--color-text);
}

.time-english {
  display: block;
  color: var(--color-text-secondary);
  font-size: 12px;
  margin-top: 2px;
}

.selector-arrow {
  margin-left: 8px;
  color: var(--color-text-secondary);
  transition: transform 0.3s ease;
}

.time-selector.open .selector-arrow {
  transform: rotate(180deg);
}

/* Time Dropdown */
.time-dropdown {
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  z-index: 1050;
  margin-top: 4px;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius-base);
  box-shadow: 0 6px 16px rgba(0, 0, 0, 0.08);
  max-height: 300px;
  overflow: hidden;
}

.search-wrapper {
  padding: 8px;
  border-bottom: 1px solid var(--color-border-secondary);
}

.search-input {
  width: 100%;
  padding: 6px 8px;
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius-base);
  font-size: var(--font-size-base);
  outline: none;
}

.search-input:focus {
  border-color: var(--ant-primary-color);
  box-shadow: 0 0 0 2px rgba(24, 144, 255, 0.2);
}

.options-container {
  max-height: 200px;
  overflow-y: auto;
}

.time-option {
  padding: 12px 16px;
  border-bottom: 1px solid var(--color-border-secondary);
  cursor: pointer;
  transition: background-color 0.2s ease;
  min-height: var(--touch-target-min);
}

.time-option:last-child {
  border-bottom: none;
}

.time-option:hover,
.time-option.highlighted {
  background-color: var(--color-fill);
}

.time-option:active {
  background-color: #e6f7ff;
}

.option-content {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.option-primary {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.chinese-time {
  font-weight: 500;
  color: var(--color-text);
}

.time-branch {
  font-size: 18px;
  color: var(--ant-primary-color);
  font-weight: 600;
}

.option-secondary {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.english-time {
  font-size: 12px;
  color: var(--color-text-secondary);
}

.element-badge {
  font-size: 11px;
  padding: 2px 6px;
  border-radius: 3px;
  color: white;
  font-weight: 500;
}

.element-wood {
  background-color: var(--element-wood);
}
.element-fire {
  background-color: var(--element-fire);
}
.element-earth {
  background-color: var(--element-earth);
}
.element-metal {
  background-color: var(--element-metal);
}
.element-water {
  background-color: var(--element-water);
}

.option-description {
  font-size: 11px;
  color: var(--color-text-secondary);
  font-style: italic;
}

.dropdown-footer {
  padding: 8px 12px;
  border-top: 1px solid var(--color-border-secondary);
  background-color: var(--color-fill);
}

.help-text {
  color: var(--color-text-secondary);
  font-size: 12px;
}

/* Calendar Type Indicator */
.calendar-type-indicator {
  margin-top: 8px;
}

.calendar-badge {
  display: inline-block;
  padding: 4px 8px;
  border-radius: 4px;
  font-size: 12px;
  font-weight: 500;
}

.calendar-solar {
  background-color: #fff7e6;
  color: var(--element-fire);
  border: 1px solid var(--element-fire);
}

.calendar-lunar {
  background-color: #f6ffed;
  color: var(--element-water);
  border: 1px solid var(--element-water);
}

/* Form Actions */
.form-actions {
  margin-top: 32px;
  text-align: center;
}

.submit-button {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 48px;
  padding: 0 24px;
  color: var(--color-bg);
  font-size: 16px;
  font-weight: 500;
  background: var(--ant-primary-color);
  border: 1px solid var(--ant-primary-color);
  border-radius: var(--border-radius-base);
  cursor: pointer;
  transition: all 0.3s cubic-bezier(0.645, 0.045, 0.355, 1);
  text-decoration: none;
  outline: none;
  min-width: 200px;
  min-height: var(--touch-target-min);
}

.submit-button:hover {
  background: #40a9ff;
  border-color: #40a9ff;
}

.submit-button:active {
  background: #096dd9;
  border-color: #096dd9;
}

.submit-button:disabled {
  color: var(--color-text-disabled);
  background: var(--color-fill);
  border-color: var(--color-border);
  cursor: not-allowed;
}

.loading-spinner {
  display: inline-block;
  width: 16px;
  height: 16px;
  border: 2px solid transparent;
  border-top: 2px solid currentColor;
  border-radius: 50%;
  animation: spin 1s linear infinite;
  margin-right: 8px;
}

@keyframes spin {
  0% {
    transform: rotate(0deg);
  }
  100% {
    transform: rotate(360deg);
  }
}

/* Error Messages */
.error-message {
  display: none;
  margin-top: 6px;
  color: var(--ant-error-color);
  font-size: 12px;
  line-height: 1.5;
}

.form-item.has-error .error-message {
  display: block;
}

.form-item.has-error .ant-input {
  border-color: var(--ant-error-color);
}

.form-item.has-error .ant-input:hover {
  border-color: var(--ant-error-color);
}

.form-item.has-error .ant-input:focus {
  border-color: var(--ant-error-color);
  box-shadow: 0 0 0 2px rgba(255, 77, 79, 0.2);
}

.form-error {
  margin-top: 16px;
  padding: 12px;
  background-color: #fff2f0;
  border: 1px solid #ffccc7;
  border-radius: var(--border-radius-base);
  color: var(--ant-error-color);
  font-size: var(--font-size-base);
}

/* Form Progress */
.form-progress {
  margin-top: 24px;
  padding: 16px;
  background-color: var(--color-fill);
  border-radius: var(--border-radius-base);
}

.progress-bar {
  width: 100%;
  height: 8px;
  background-color: var(--color-border-secondary);
  border-radius: 4px;
  overflow: hidden;
  margin-bottom: 8px;
}

.progress-fill {
  height: 100%;
  background-color: var(--ant-primary-color);
  transition: width 0.3s ease;
  width: 0%;
}

.progress-text {
  font-size: 12px;
  color: var(--color-text-secondary);
  text-align: center;
  display: block;
}

/* Mobile Optimizations */
@media screen and (max-width: 768px) {
  .zwds-form {
    margin: 16px;
    padding: 16px;
    border-radius: 8px;
  }

  .form-header {
    margin-bottom: 24px;
    padding-bottom: 16px;
  }

  .form-header h2 {
    font-size: 20px;
  }

  .ant-form-item {
    margin-bottom: 20px;
  }

  .radio-group {
    flex-direction: column;
    gap: 4px;
  }

  .radio-button {
    justify-content: flex-start;
    width: 100%;
  }

  .time-dropdown.mobile-dropdown {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 90vw;
    max-height: 70vh;
    margin-top: 0;
    z-index: 1000;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
  }

  .submit-button {
    width: 100%;
    height: 52px;
    font-size: 18px;
  }

  /* Touch feedback */
  .touch-target:active {
    background-color: rgba(0, 0, 0, 0.05);
    transform: scale(0.98);
  }

  .radio-button:active,
  .time-option:active {
    background-color: rgba(24, 144, 255, 0.1);
  }
}

/* Dark mode support */
@media (prefers-color-scheme: dark) {
  :root {
    --color-text: rgba(255, 255, 255, 0.85);
    --color-text-secondary: rgba(255, 255, 255, 0.65);
    --color-text-disabled: rgba(255, 255, 255, 0.25);
    --color-border: #434343;
    --color-border-secondary: #303030;
    --color-fill: #1f1f1f;
    --color-bg: #141414;
  }
}

/* High contrast mode support */
@media (prefers-contrast: high) {
  :root {
    --color-border: #000000;
    --ant-primary-color: #0066cc;
    --ant-error-color: #cc0000;
  }
}

/* Reduced motion support */
@media (prefers-reduced-motion: reduce) {
  * {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

/* Focus visible for accessibility */
.ant-input:focus-visible,
.radio-button:focus-visible,
.submit-button:focus-visible,
.time-option:focus-visible {
  outline: 2px solid var(--ant-primary-color);
  outline-offset: 2px;
}

/* Screen reader only content */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}