@use './variables' as tokens;
@use './flatpickr-core';

/**
 * Global Flatpickr Theme overrides using flux-ui tokens.
 * This styles both popup calendars (appended to body) and inline calendars
 * (when injected into the Light DOM of vi-date-picker).
 */

.flatpickr-calendar {
  background: var(--vi-date-picker-calendar-bg, tokens.$layer-01);
  box-shadow: var(--vi-date-picker-calendar-shadow, tokens.$shadow-lg);
  border-radius: var(--vi-border-radius-lg, tokens.$border-radius-lg);
  border: 1px solid var(--vi-border-03, tokens.$border-03);
  font-family: var(--vi-font-family-base, tokens.$font-family-base);
  color: var(--vi-text-primary, tokens.$text-primary);
  padding: var(--vi-spacing-xs, tokens.$spacing-xs) 0;
  width: max-content;

  &.arrowTop:before { border-bottom-color: var(--vi-border-03, tokens.$border-03); }
  &.arrowTop:after { border-bottom-color: var(--vi-date-picker-calendar-bg, tokens.$layer-01); }
  &.arrowBottom:before { border-top-color: var(--vi-border-03, tokens.$border-03); }
  &.arrowBottom:after { border-top-color: var(--vi-date-picker-calendar-bg, tokens.$layer-01); }

  .flatpickr-innerContainer {
    justify-content: center;
  }
}

.flatpickr-months {
  .flatpickr-month {
    color: var(--vi-text-primary, tokens.$text-primary);
    fill: var(--vi-text-primary, tokens.$text-primary);
  }
  
  .flatpickr-prev-month,
  .flatpickr-next-month {
    color: var(--vi-text-secondary, tokens.$text-secondary);
    fill: var(--vi-text-secondary, tokens.$text-secondary);
    padding: var(--vi-spacing-xs, tokens.$spacing-xs);
    border-radius: var(--vi-border-radius-md, tokens.$border-radius-md);
    transition: background-color 0.2s ease;
    
    &:hover {
      background-color: var(--vi-layer-hover-02, tokens.$layer-hover-02);
      color: var(--vi-text-primary, tokens.$text-primary);
      fill: var(--vi-text-primary, tokens.$text-primary);
    }
  }
}

.flatpickr-current-month {
  font-size: var(--vi-font-size-base, tokens.$font-size-base);
  font-weight: var(--vi-font-weight-semibold, tokens.$font-weight-semibold);
  color: inherit;
  
  .flatpickr-monthDropdown-months {
    background: var(--vi-date-picker-calendar-bg, tokens.$layer-01);
    border-radius: var(--vi-border-radius-md, tokens.$border-radius-md);
    padding: 4px;
    
    &:hover {
      background-color: var(--vi-layer-hover-02, tokens.$layer-hover-02);
    }
  }
  
  input.cur-year {
    font-weight: inherit;
    color: inherit;
    
    &:hover {
      background-color: var(--vi-layer-hover-02, tokens.$layer-hover-02);
    }
  }
}

.flatpickr-weekdays {
  .flatpickr-weekdaycontainer {
    display: grid;
    grid-template-columns: repeat(7, var(--vi-date-picker-day-size, 32px));
    justify-items: center;
    width: max-content;
  }
  .flatpickr-weekday {
    color: var(--vi-text-secondary, tokens.$text-secondary);
    font-size: var(--vi-font-size-xs, tokens.$font-size-xs);
    font-weight: var(--vi-font-weight-medium, tokens.$font-weight-medium);
  }
}

.flatpickr-days {
  width: auto;
}

.dayContainer {
  display: grid;
  grid-template-columns: repeat(7, var(--vi-date-picker-day-size, 32px));
  justify-items: center;
  width: max-content;
  min-width: auto;
  max-width: none;
}

.flatpickr-day {
  color: var(--vi-text-primary, tokens.$text-primary);
  border-radius: var(--vi-border-radius-full, tokens.$border-radius-full);
  margin: 0;
  width: var(--vi-date-picker-day-size, 32px);
  max-width: var(--vi-date-picker-day-size, 32px);
  height: var(--vi-date-picker-day-size, 32px);
  line-height: var(--vi-date-picker-day-size, 32px);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.2s ease;
  
  &:hover,
  &:focus {
    background: var(--vi-date-picker-day-hover-bg, tokens.$layer-hover-01);
    border-color: var(--vi-date-picker-day-hover-bg, tokens.$layer-hover-01);
  }
  
  &.today {
    border-color: var(--vi-date-picker-day-today-border, tokens.$color-primary);
    
    &:hover,
    &:focus {
      border-color: var(--vi-date-picker-day-today-border, tokens.$color-primary);
      background: var(--vi-date-picker-day-hover-bg, tokens.$layer-hover-01);
    }
  }
  
  &.selected,
  &.startRange,
  &.endRange,
  &.selected.inRange,
  &.startRange.inRange,
  &.endRange.inRange,
  &.selected:focus,
  &.startRange:focus,
  &.endRange:focus,
  &.selected:hover,
  &.startRange:hover,
  &.endRange:hover,
  &.selected.prevMonthDay,
  &.startRange.prevMonthDay,
  &.endRange.prevMonthDay,
  &.selected.nextMonthDay,
  &.startRange.nextMonthDay,
  &.endRange.nextMonthDay {
    background: var(--vi-date-picker-day-selected-bg, tokens.$color-primary);
    border-color: var(--vi-date-picker-day-selected-bg, tokens.$color-primary);
    color: var(--vi-date-picker-day-selected-color, tokens.$text-primary-inverse);
  }
  
  &.inRange,
  &.prevMonthDay.inRange,
  &.nextMonthDay.inRange,
  &.today.inRange,
  &.prevMonthDay.today.inRange,
  &.nextMonthDay.today.inRange,
  &:hover.inRange,
  &.prevMonthDay:hover.inRange,
  &.nextMonthDay:hover.inRange {
    background: var(--vi-color-blue-100, tokens.$color-blue-100);
    border-color: var(--vi-color-blue-100, tokens.$color-blue-100);
    border-radius: 0;
    box-shadow: none;
    color: var(--vi-text-primary, tokens.$text-primary);
  }
  
  &.flatpickr-disabled,
  &.flatpickr-disabled:hover,
  &.prevMonthDay,
  &.nextMonthDay,
  &.notAllowed,
  &.notAllowed.prevMonthDay,
  &.notAllowed.nextMonthDay {
    color: var(--vi-text-disabled, tokens.$text-disabled);
    background: transparent;
    border-color: transparent;
  }
  
  &.flatpickr-disabled,
  &.flatpickr-disabled:hover {
    cursor: not-allowed;
  }
}

// ----------------------------------------------------------------------------
// Custom vi-month-year-plugin Styles
// ----------------------------------------------------------------------------

.vi-calendar-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 4px var(--vi-spacing-xs, tokens.$spacing-xs);
  border-bottom: 1px solid var(--vi-border-02, tokens.$border-02);
  margin-bottom: var(--vi-spacing-xs, tokens.$spacing-xs);
}

.vi-calendar-selectors {
  display: flex;
  gap: var(--vi-spacing-xs, tokens.$spacing-xs);
  align-items: center;
}

.vi-calendar-month-toggle {
  background: transparent;
  border: 1px solid transparent;
  border-radius: var(--vi-border-radius-md, tokens.$border-radius-md);
  padding: 4px 8px;
  font-family: var(--vi-font-family-base, tokens.$font-family-base);
  font-weight: var(--vi-font-weight-semibold, tokens.$font-weight-semibold);
  font-size: var(--vi-font-size-base, tokens.$font-size-base);
  color: var(--vi-text-primary, tokens.$text-primary);
  cursor: pointer;
  transition: all 0.2s ease;

  &:hover {
    background: var(--vi-layer-hover-02, tokens.$layer-hover-02);
  }
  
  &:focus-visible {
    outline: none;
    background: var(--vi-layer-hover-02, tokens.$layer-hover-02);
    box-shadow: 0 0 0 2px var(--vi-focus, tokens.$focus);
  }
}

.vi-calendar-year-select {
  /* Using standard CSS since it renders in Light DOM, allowing it to look okay even if vi-select isn't loaded */
  min-width: 76px;
  --vi-select-spacing-padding-inline: 4px;
  --vi-select-option-padding-inline: 8px;
  --vi-select-sizing-min-height: 32px;
}

.vi-calendar-nav {
  display: flex;
  gap: 2px;
}

.vi-calendar-nav-btn {
  background: transparent;
  border: none;
  border-radius: var(--vi-border-radius-md, tokens.$border-radius-md);
  width: 28px;
  height: 28px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: var(--vi-text-secondary, tokens.$text-secondary);
  cursor: pointer;
  transition: all 0.2s ease;

  &:hover {
    background: var(--vi-layer-hover-02, tokens.$layer-hover-02);
    color: var(--vi-text-primary, tokens.$text-primary);
  }
}

.vi-calendar-month-grid {
  position: absolute;
  top: 50px; /* Below the header */
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--vi-date-picker-calendar-bg, tokens.$layer-01);
  z-index: 10;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  grid-auto-rows: min-content;
  gap: 4px;
  padding: var(--vi-spacing-xs, tokens.$spacing-xs);
  border-radius: 0 0 var(--vi-border-radius-lg, tokens.$border-radius-lg) var(--vi-border-radius-lg, tokens.$border-radius-lg);

  /* When Days grid is hidden (Month Mode), we don't need position absolute over it */
  .vi-month-mode & {
    position: relative;
    top: 0;
    margin-top: var(--vi-spacing-xs, tokens.$spacing-xs);
  }
}

.vi-calendar-month-btn {
  background: transparent;
  border: 1px solid transparent;
  border-radius: var(--vi-border-radius-full, tokens.$border-radius-full);
  padding: var(--vi-spacing-xs, tokens.$spacing-xs) 0;
  font-family: var(--vi-font-family-base, tokens.$font-family-base);
  font-size: var(--vi-font-size-sm, tokens.$font-size-sm);
  color: var(--vi-text-primary, tokens.$text-primary);
  cursor: pointer;
  transition: all 0.2s ease;

  &:hover {
    background: var(--vi-layer-hover-01, tokens.$layer-hover-01);
  }

  &.active {
    background: var(--vi-date-picker-day-selected-bg, tokens.$color-primary);
    color: var(--vi-text-primary-inverse, tokens.$text-primary-inverse);
  }
}

// ----------------------------------------------------------------------------
// Week Mode Styles
// ----------------------------------------------------------------------------

.flatpickr-day {
  // When hovering over a week, it adds .inRange to all 7 days
  &.inRange,
  &.inRange:hover {
    // Add pill-like rounded corners to the start and end of the week row
    &:nth-child(7n + 1) {
      border-top-left-radius: var(--vi-border-radius-full, tokens.$border-radius-full);
      border-bottom-left-radius: var(--vi-border-radius-full, tokens.$border-radius-full);
    }
    &:nth-child(7n) {
      border-top-right-radius: var(--vi-border-radius-full, tokens.$border-radius-full);
      border-bottom-right-radius: var(--vi-border-radius-full, tokens.$border-radius-full);
    }
  }

  // When a week is selected, it adds .week.selected to all 7 days
  &.week.selected {
    // Middle days look like .inRange (light blue, no radius)
    background: var(--vi-color-blue-100, tokens.$color-blue-100);
    border-color: var(--vi-color-blue-100, tokens.$color-blue-100);
    color: var(--vi-text-primary, tokens.$text-primary);
    border-radius: 0;
    box-shadow: none;

    // First day looks like .startRange (dark blue, left rounded)
    &:nth-child(7n + 1) {
      background: var(--vi-date-picker-day-selected-bg, tokens.$color-primary);
      border-color: var(--vi-date-picker-day-selected-bg, tokens.$color-primary);
      color: var(--vi-date-picker-day-selected-color, tokens.$text-primary-inverse);
      border-top-left-radius: var(--vi-border-radius-full, tokens.$border-radius-full);
      border-bottom-left-radius: var(--vi-border-radius-full, tokens.$border-radius-full);
    }

    // Last day looks like .endRange (dark blue, right rounded)
    &:nth-child(7n) {
      background: var(--vi-date-picker-day-selected-bg, tokens.$color-primary);
      border-color: var(--vi-date-picker-day-selected-bg, tokens.$color-primary);
      color: var(--vi-date-picker-day-selected-color, tokens.$text-primary-inverse);
      border-top-right-radius: var(--vi-border-radius-full, tokens.$border-radius-full);
      border-bottom-right-radius: var(--vi-border-radius-full, tokens.$border-radius-full);
    }
  }
}

// ----------------------------------------------------------------------------
// Date Mode - Today Button Styles
// ----------------------------------------------------------------------------

.vi-calendar-footer {
  padding: 4px var(--vi-spacing-xs, tokens.$spacing-xs);
  border-top: 1px solid var(--vi-border-02, tokens.$border-02);
  display: flex;
  justify-content: flex-end;
}

.vi-calendar-today-btn {
  background: transparent;
  border: none;
  color: var(--vi-color-primary, tokens.$color-primary);
  font-family: var(--vi-font-family-base, tokens.$font-family-base);
  font-weight: var(--vi-font-weight-medium, tokens.$font-weight-medium);
  font-size: var(--vi-font-size-sm, tokens.$font-size-sm);
  cursor: pointer;
  padding: var(--vi-spacing-xs, tokens.$spacing-xs) var(--vi-spacing-sm, tokens.$spacing-sm);
  border-radius: var(--vi-border-radius-md, tokens.$border-radius-md);
  transition: background-color 0.2s ease;

  &:hover {
    background: var(--vi-layer-hover-01, tokens.$layer-hover-01);
  }
}