/* ===================================================================
   ATQAN — frontend/css/features/inputs.css
   Google Forms Style Minimalist Selectors & Radio Layouts
   =================================================================== */

.m3-radio-group {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.m3-radio-item {
  display: flex;
  align-items: center;
  padding: 12px 24px;
  cursor: pointer;
  border: none;
  border-radius: var(--radius-full);
  background-color: var(--md-surface);
  box-shadow: none;
  transition: var(--transition-decelerate);
}

.m3-radio-item:hover {
  background-color: var(--md-surface-low);
}

.m3-radio-item input {
  position: absolute;
  opacity: 0;
  pointer-events: none;
}

.m3-radio-indicator {
  width: 20px;
  height: 20px;
  border: none;
  border-radius: var(--radius-full);
  margin-right: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: var(--md-surface-low);
  transition: var(--transition-decelerate);
  flex-shrink: 0;
  position: relative;
}

/* M3 hover ripple splash circle */
.m3-radio-indicator::before {
  content: '';
  position: absolute;
  width: 40px;
  height: 40px;
  border-radius: var(--radius-full);
  background-color: var(--md-primary);
  opacity: 0;
  transform: scale(0);
  transition: transform var(--md-motion-duration-short) var(--md-motion-easing-standard), opacity var(--md-motion-duration-short) var(--md-motion-easing-standard);
  z-index: 1;
  pointer-events: none;
}

.m3-radio-item:hover .m3-radio-indicator::before {
  opacity: 0.06;
  transform: scale(1);
}

/* Checked inner dot with elastic overshoot transition */
.m3-radio-indicator::after {
  content: '';
  width: 10px;
  height: 10px;
  background-color: var(--md-on-primary);
  border-radius: var(--radius-full);
  transform: scale(0);
  transition: transform var(--md-motion-duration-short) var(--md-motion-easing-emphasized);
  z-index: 2;
}

.m3-radio-item input:checked + .m3-radio-indicator {
  background-color: var(--md-primary);
}

.m3-radio-item input:checked + .m3-radio-indicator::after {
  transform: scale(1);
}

.m3-radio-item:has(input:checked) {
  background-color: var(--md-surface-low);
}

.m3-radio-item:has(input:checked) .m3-radio-label {
  color: var(--md-text);
  font-weight: 600;
}

.m3-radio-label {
  font-size: var(--md-type-body-large-size);
  font-weight: var(--md-type-body-large-weight);
  color: var(--md-text);
  transition: var(--transition-decelerate);
}

.m3-chip-group {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.m3-filter-chip {
  cursor: pointer;
}

.m3-filter-chip input {
  position: absolute;
  opacity: 0;
  pointer-events: none;
}

.chip-label {
  display: inline-flex;
  align-items: center;
  padding: 8px 16px;
  border: none;
  border-radius: var(--radius-full);
  font-size: var(--md-type-label-large-size);
  font-weight: var(--md-type-label-large-weight);
  letter-spacing: var(--md-type-label-large-ls);
  line-height: var(--md-type-label-large-lh);
  color: var(--md-text-sub);
  background: var(--md-surface);
  box-shadow: none;
  transition: var(--transition-decelerate);
}

/* Slide-in checkmark prefix for chip active states */
.chip-label::before {
  content: 'check';
  font-family: 'Material Symbols Rounded', sans-serif !important;
  font-size: 0;
  width: 0;
  opacity: 0;
  margin-right: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: width var(--md-motion-duration-short) var(--md-motion-easing-emphasized), opacity var(--md-motion-duration-instant) var(--md-motion-easing-standard), margin-right var(--md-motion-duration-short) var(--md-motion-easing-emphasized), font-size var(--md-motion-duration-short) var(--md-motion-easing-standard);
  overflow: hidden;
  vertical-align: middle;
}

.m3-filter-chip:hover .chip-label {
  background-color: var(--md-surface-low);
}

.m3-filter-chip input:checked + .chip-label {
  background-color: var(--md-primary-container);
  color: var(--md-on-primary-container);
  font-weight: 500;
  box-shadow: none;
}

.m3-filter-chip input:checked + .chip-label::before {
  font-size: 18px;
  width: 18px;
  opacity: 1;
  margin-right: 8px;
}

/* Checkbox Row Styling */
.m3-checkbox-row {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  cursor: pointer;
  user-select: none;
  padding: 8px 12px;
  margin-left: -12px;
  border-radius: var(--radius-sm);
  transition: background-color var(--md-motion-duration-short) var(--md-motion-easing-emphasized);
}

.m3-checkbox-row:hover {
  background-color: var(--md-surface-low);
}

.m3-checkbox-row input {
  position: absolute;
  opacity: 0;
  pointer-events: none;
}

.checkbox-box {
  width: 24px;
  height: 24px;
  border: none;
  background-color: var(--md-surface-low);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition-decelerate);
  flex-shrink: 0;
  position: relative;
}

.checkbox-box::before {
  content: '';
  position: absolute;
  width: 44px;
  height: 44px;
  border-radius: var(--radius-full);
  background-color: var(--md-primary);
  opacity: 0;
  transform: scale(0);
  transition: transform var(--md-motion-duration-short) var(--md-motion-easing-standard), opacity var(--md-motion-duration-short) var(--md-motion-easing-standard);
  pointer-events: none;
}

.m3-checkbox-row:hover .checkbox-box::before {
  opacity: 0.06;
  transform: scale(1);
}

.check-icon {
  font-size: 0;
  color: var(--md-on-primary);
  opacity: 0;
  transition: font-size var(--md-motion-duration-short) var(--md-motion-easing-emphasized), opacity var(--md-motion-duration-instant) var(--md-motion-easing-standard);
}

.m3-checkbox-row input:checked + .checkbox-box {
  background-color: var(--md-primary);
}

.m3-checkbox-row input:checked + .checkbox-box .check-icon {
  font-size: 20px;
  opacity: 1;
}

.checkbox-text {
  font-size: var(--md-type-body-medium-size);
  color: var(--md-text);
  line-height: var(--md-type-body-medium-lh);
}