@use 'sass:color';
@use "variables";

/* Likert Scale Component
   ========================================================================== */

// Likert scale component variables
$likert-color-primary: var(--mm-primary-color, variables.$primary-color) !default;
$likert-color-radio-empty: var(--mm-text-hint, #9e9e9e) !default;
$likert-color-radio-checked: var(--mm-primary-color, variables.$primary-color) !default;
$likert-color-disabled: var(--mm-text-disabled, rgba(0, 0, 0, 0.38)) !default;
$likert-color-text: var(--mm-text-primary, rgba(0, 0, 0, 0.87)) !default;
$likert-color-text-secondary: var(--mm-text-secondary, rgba(0, 0, 0, 0.54)) !default;

// Size variants for radio buttons
$likert-radio-size-small: 16px !default;
$likert-radio-size-medium: 20px !default;
$likert-radio-size-large: 24px !default;

// Text size variants
$likert-text-size-small: 14px !default;
$likert-text-size-medium: 16px !default;
$likert-text-size-large: 18px !default;

// Density spacing (gap between items)
$likert-gap-compact: 4px !default;
$likert-gap-standard: 10px !default;
$likert-gap-comfortable: 16px !default;

// Tooltip
$likert-tooltip-bg: rgba(0, 0, 0, 0.8) !default;
$likert-tooltip-text: white !default;

// Container
.likert-scale {
  position: relative;
  display: flex;
  align-items: center;
  outline: none;
  gap: 16px;
  transition: all 0.2s ease;
  margin-bottom: 20px;

  // Focus state
  &:focus-visible {
    outline: 2px solid var(--mm-primary-color, #{variables.$primary-color});
    outline-offset: 2px;
    border-radius: 4px;
  }

  // Read-only state
  &--readonly {
    .likert-scale__item {
      cursor: default;
    }
  }

  // Disabled state
  &--disabled {
    opacity: 0.6;

    .likert-scale__item {
      cursor: not-allowed;
    }
  }

  // Aligned layout for multi-question surveys
  &--aligned {
    .likert-scale__question-label {
      min-width: 250px;
      max-width: 50%;
    }

    .likert-scale__scale-container {
      flex: 0 0 auto;
      min-width: 300px;
    }
  }
}

// Question label (left side)
.likert-scale__question-label {
  flex: 1 1 auto;
  display: flex;
  flex-direction: column;
  min-width: 0; // Allow text wrapping

  span {
    font-size: 1rem;
    font-weight: 400;
    color: $likert-color-text;
    line-height: 1.4;
    word-wrap: break-word;
  }
}

.likert-scale__description {
  font-size: 0.875rem;
  color: $likert-color-text-secondary;
  margin-top: 4px;
  line-height: 1.3;
}

// Scale container (right side with fixed width)
.likert-scale__scale-container {
  flex: 0 0 auto;
  display: flex;
  flex-direction: column;
  align-items: stretch;
}

// Scale items row
.likert-scale__scale {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  position: relative;
}

// Individual scale item
.likert-scale__item {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: flex-start;
  position: relative;
  cursor: pointer;
  transition: transform 0.15s ease;
  flex: 1 1 0;

  &:hover:not(.likert-scale__item--disabled):not(.likert-scale__item--readonly) {
    transform: scale(1.05);
  }

  // Checked state - radio button styling handled by label pseudo-elements
  &--checked {
    .likert-scale__label::before {
      border-color: $likert-color-radio-checked;
    }
    .likert-scale__label::after {
      background-color: $likert-color-radio-checked;
      transform: scale(1);
    }
  }

  // Disabled state
  &--disabled {
    cursor: not-allowed;
    opacity: 0.6;

    .likert-scale__label::before {
      border-color: $likert-color-disabled;
    }
  }

  // Readonly state
  &--readonly {
    cursor: default;
  }
}

// Number label above radio button
.likert-scale__number {
  font-size: $likert-text-size-medium;
  font-weight: 500;
  color: $likert-color-text;
  margin-bottom: 4px;
  user-select: none;
  text-align: center;
}

// Hidden radio input - same as RadioButtons
.likert-scale__input {
  position: absolute;
  opacity: 0;
  pointer-events: none;
}

// Custom radio button label - uses EXACT same style as RadioButtons
.likert-scale__label {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  min-width: 48px;
  min-height: 48px;
  cursor: pointer;
  user-select: none;

  // Before and after pseudo-elements - EXACT RadioButtons styling
  &::before,
  &::after {
    content: '';
    position: absolute;
    left: 50%;
    top: 50%;
    margin-left: -8px;
    margin-top: -8px;
    width: 16px;
    height: 16px;
    z-index: 0;
    transition: .28s ease;
    border-radius: 50%;
  }

  // Unchecked state - both before and after have border
  &::before,
  &::after {
    border: 2px solid var(--mm-text-secondary, $likert-color-radio-empty);
  }

  // Unchecked - after element is scaled to 0
  &::after {
    transform: scale(0);
  }
}

// Checked state - same as RadioButtons
.likert-scale__input:checked + .likert-scale__label {
  &::before {
    border: 2px solid transparent;
  }

  &::after {
    border: 2px solid var(--mm-primary-color, $likert-color-radio-checked);
    background-color: var(--mm-primary-color, $likert-color-radio-checked);
    transform: scale(1.02);
  }
}

// Hover state
.likert-scale__item:hover:not(.likert-scale__item--disabled):not(.likert-scale__item--readonly) .likert-scale__label {
  &::before {
    border-color: var(--mm-primary-color, $likert-color-radio-checked);
  }
}

// Focus state
.likert-scale__input:focus + .likert-scale__label::before {
  box-shadow: 0 0 0 10px rgba(0,0,0,.1);
}

// Disabled state
.likert-scale__input:disabled + .likert-scale__label {
  &::before {
    background-color: transparent;
    border-color: var(--mm-text-disabled, $likert-color-disabled);
  }
}

.likert-scale__input:disabled:checked + .likert-scale__label::after {
  background-color: var(--mm-text-disabled, $likert-color-disabled);
  border-color: var(--mm-text-disabled, $likert-color-disabled);
}

// Tooltip
.likert-scale__tooltip {
  position: absolute;
  bottom: calc(100% + 8px);
  left: 50%;
  transform: translateX(-50%);
  padding: 4px 8px;
  background: $likert-tooltip-bg;
  color: $likert-tooltip-text;
  font-size: 12px;
  border-radius: 4px;
  white-space: nowrap;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s ease;
  z-index: 1000;

  // Arrow
  &::after {
    content: '';
    position: absolute;
    top: 100%;
    left: 50%;
    transform: translateX(-50%);
    border: 4px solid transparent;
    border-top-color: $likert-tooltip-bg;
  }
}

.likert-scale__item:hover .likert-scale__tooltip {
  opacity: 1;
}

// Scale anchors (below the radio buttons)
.likert-scale__anchors {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  font-size: 0.875rem;
  color: $likert-color-text-secondary;
  position: relative;
}

.likert-scale__anchor {
  flex: 1 1 0;
  text-align: center;
  line-height: 1.2;
  padding: 0 4px;

  &--start {
    text-align: left;
  }

  &--middle {
    text-align: center;
  }

  &--end {
    text-align: right;
  }
}

// Layout variants
.likert-scale--horizontal {
  flex-direction: row;
  align-items: center;

  .likert-scale__scale {
    flex-direction: row;
  }
}

.likert-scale--vertical {
  flex-direction: column;
  align-items: stretch;

  .likert-scale__question-label {
    margin-bottom: 12px;
  }

  .likert-scale__scale-container {
    width: 100%;
  }

  .likert-scale__scale {
    flex-direction: column;
    align-items: stretch;
  }

  .likert-scale__item {
    flex-direction: row;
    justify-content: flex-start;
    padding: 4px 0;
    width: 100%;
  }

  .likert-scale__number {
    margin-bottom: 0;
    margin-right: 12px;
    min-width: 24px;
    text-align: left;
  }

  .likert-scale__anchors {
    flex-direction: column;
    margin-top: 0;
    margin-left: 60px;
  }

  .likert-scale__anchor {
    margin: 4px 0;
    text-align: left;
    flex: 0 0 auto;

    &--start,
    &--middle,
    &--end {
      text-align: left;
    }
  }
}

.likert-scale--responsive {
  // Default: horizontal on desktop
  flex-direction: row;
  align-items: center;

  .likert-scale__scale {
    flex-direction: row;
  }

  // Vertical on mobile
  @media #{variables.$small-and-down} {
    flex-direction: column;
    align-items: stretch;

    .likert-scale__question-label {
      margin-bottom: 12px;
    }

    .likert-scale__scale-container {
      width: 100%;
    }

    .likert-scale__scale {
      flex-direction: column;
      align-items: stretch;
    }

    .likert-scale__item {
      flex-direction: row;
      justify-content: flex-start;
      padding: 4px 0;
      width: 100%;
    }

    .likert-scale__number {
      margin-bottom: 0;
      margin-right: 12px;
      min-width: 24px;
      text-align: left;
    }

    .likert-scale__anchors {
      flex-direction: column;
      margin-top: 0;
      margin-left: 60px;
    }

    .likert-scale__anchor {
      margin: 4px 0;
      text-align: left;
      flex: 0 0 auto;

      &--start,
      &--middle,
      &--end {
        text-align: left;
      }
    }
  }
}

// Density variants (spacing between items and overall spacing)
.likert-scale--compact {
  margin-bottom: 12px;
  gap: 12px;

  .likert-scale__scale {
    gap: $likert-gap-compact;
  }

  .likert-scale__anchors {
    margin-top: 4px;
  }
}

.likert-scale--standard {
  margin-bottom: 20px;
  gap: 16px;

  .likert-scale__scale {
    gap: $likert-gap-standard;
  }
}

.likert-scale--comfortable {
  margin-bottom: 28px;
  gap: 20px;

  .likert-scale__scale {
    gap: $likert-gap-comfortable;
  }

  .likert-scale__anchors {
    margin-top: 12px;
  }
}

// Size variants (affect touch targets, spacing, and number text)
.likert-scale--small {
  .likert-scale__number {
    font-size: $likert-text-size-small;
    margin-bottom: 2px;
  }

  .likert-scale__label {
    min-width: 36px;
    min-height: 36px;
  }

  .likert-scale__anchor {
    font-size: 0.75rem;
  }
}

.likert-scale--medium {
  .likert-scale__number {
    font-size: $likert-text-size-medium;
    margin-bottom: 4px;
  }

  .likert-scale__label {
    min-width: 48px;
    min-height: 48px;
  }

  .likert-scale__anchor {
    font-size: 0.875rem;
  }
}

.likert-scale--large {
  .likert-scale__number {
    font-size: $likert-text-size-large;
    margin-bottom: 6px;
  }

  .likert-scale__label {
    min-width: 56px;
    min-height: 56px;
  }

  .likert-scale__anchor {
    font-size: 1rem;
  }
}

// Screen reader only content
.likert-scale__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;
}

// Material Design touch target (minimum 48x48dp)
@media (pointer: coarse) {
  .likert-scale__label {
    min-width: 48px;
    min-height: 48px;
  }
}

// RTL support
[dir="rtl"] {
  .likert-scale__tooltip {
    &::after {
      transform: translateX(50%);
    }
  }

  .likert-scale--vertical {
    .likert-scale__number {
      margin-right: 0;
      margin-left: 12px;
    }

    .likert-scale__anchors {
      margin-left: 0;
      margin-right: 60px;
    }

    .likert-scale__item {
      justify-content: flex-end;
    }
  }

  .likert-scale--aligned {
    .likert-scale__question-label {
      text-align: right;
    }
  }
}

// High contrast mode support
@media (prefers-contrast: high) {
  .likert-scale__label {
    &::before {
      border-width: 3px;
    }
  }
}

// Dark theme adjustments
[data-theme="dark"] {
  .likert-scale__tooltip {
    background: rgba(255, 255, 255, 0.9);
    color: rgba(0, 0, 0, 0.87);

    &::after {
      border-top-color: rgba(255, 255, 255, 0.9);
    }
  }
}

// Reduced motion support
@media (prefers-reduced-motion: reduce) {
  .likert-scale,
  .likert-scale__item,
  .likert-scale__label,
  .likert-scale__tooltip {
    transition: none !important;
    animation: none !important;
  }

  .likert-scale__item:hover:not(.likert-scale__item--disabled):not(.likert-scale__item--readonly) {
    transform: none;
  }
}