/**
 * Popover Component Styles
 * Uses native HTML popover API with CSS custom properties
 */

// CSS Custom Properties
.fpkit-popover {
  // Background and border
  --popover-bg: var(--color-surface-elevated);
  --popover-border: 0.0625rem solid var(--color-border);
  --popover-border-radius: 0.5rem;

  // Spacing
  --popover-padding: 1rem;
  --popover-margin: 0.5rem;
  --popover-max-width: 20rem;

  // Shadow — uses --color-ui-overlay-base so it inverts correctly in dark mode
  --popover-shadow: 0 0.25rem 0.5rem rgba(var(--color-ui-overlay-base), 0.1),
    0 0.125rem 0.25rem rgba(var(--color-ui-overlay-base), 0.06);

  // Arrow
  --popover-arrow-size: 0.5rem;
  --popover-arrow-color: var(--popover-bg);

  // Close button
  --popover-close-size: 1.5rem;
  --popover-close-color: var(--color-text-tertiary);
  --popover-close-hover-color: var(--color-text);
  --popover-close-hover-bg: var(--color-hover-overlay);

  // Base styles
  background: var(--popover-bg);
  border: var(--popover-border);
  border-radius: var(--popover-border-radius);
  padding: var(--popover-padding);
  max-width: var(--popover-max-width);
  box-shadow: var(--popover-shadow);

  // Remove default popover styles
  margin: 0;

  // Positioning margin
  &[data-placement='top'] {
    margin-bottom: var(--popover-margin);
  }

  &[data-placement='bottom'] {
    margin-top: var(--popover-margin);
  }

  &[data-placement='left'] {
    margin-right: var(--popover-margin);
  }

  &[data-placement='right'] {
    margin-left: var(--popover-margin);
  }
}

// Animation for popover open/close
.fpkit-popover:popover-open {
  opacity: 1;
  transform: scale(1);
  transition:
    opacity 0.2s ease-out,
    transform 0.2s ease-out,
    overlay 0.2s ease-out allow-discrete,
    display 0.2s ease-out allow-discrete;

  @starting-style {
    opacity: 0;
    transform: scale(0.95);
  }
}

// Closing animation
.fpkit-popover:not(:popover-open) {
  opacity: 0;
  transform: scale(0.95);
  transition:
    opacity 0.2s ease-in,
    transform 0.2s ease-in,
    overlay 0.2s ease-in allow-discrete,
    display 0.2s ease-in allow-discrete;
}

// Backdrop for manual mode — uses ui-overlay-base so the recede effect reads correctly in both themes
.fpkit-popover::backdrop {
  background: rgba(var(--color-ui-overlay-base), 0.3);
  backdrop-filter: blur(0.125rem);
  transition:
    background 0.2s ease-out,
    backdrop-filter 0.2s ease-out,
    overlay 0.2s ease-out allow-discrete,
    display 0.2s ease-out allow-discrete;

  @starting-style {
    background: rgba(var(--color-ui-overlay-base), 0);
    backdrop-filter: blur(0);
  }
}

// Popover content wrapper
.fpkit-popover-content {
  position: relative;
  display: block;
}

// Close button
.fpkit-popover-close {
  position: absolute;
  top: 0.5rem;
  right: 0.5rem;
  width: var(--popover-close-size);
  height: var(--popover-close-size);
  display: flex;
  align-items: center;
  justify-content: center;
  background: transparent;
  border: none;
  border-radius: 0.25rem;
  color: var(--popover-close-color);
  font-size: 1rem;
  line-height: 1;
  cursor: pointer;
  transition:
    background-color 0.15s ease,
    color 0.15s ease;

  &:hover {
    background: var(--popover-close-hover-bg);
    color: var(--popover-close-hover-color);
  }

  &:focus-visible {
    outline: 0.125rem solid currentColor;
    outline-offset: 0.125rem;
  }
}

// Arrow styles
.fpkit-popover-arrow {
  position: absolute;
  width: var(--popover-arrow-size);
  height: var(--popover-arrow-size);
  background: var(--popover-arrow-color);
  transform: rotate(45deg);
  border: inherit;

  // Top placement - arrow at bottom
  &[data-placement='top'] {
    bottom: calc(var(--popover-arrow-size) / -2);
    left: 50%;
    margin-left: calc(var(--popover-arrow-size) / -2);
    border-top: none;
    border-left: none;
  }

  // Bottom placement - arrow at top
  &[data-placement='bottom'] {
    top: calc(var(--popover-arrow-size) / -2);
    left: 50%;
    margin-left: calc(var(--popover-arrow-size) / -2);
    border-bottom: none;
    border-right: none;
  }

  // Left placement - arrow at right
  &[data-placement='left'] {
    right: calc(var(--popover-arrow-size) / -2);
    top: 50%;
    margin-top: calc(var(--popover-arrow-size) / -2);
    border-left: none;
    border-bottom: none;
  }

  // Right placement - arrow at left
  &[data-placement='right'] {
    left: calc(var(--popover-arrow-size) / -2);
    top: 50%;
    margin-top: calc(var(--popover-arrow-size) / -2);
    border-right: none;
    border-top: none;
  }
}

// Default trigger button
.fpkit-popover-trigger {
  padding: 0.5rem 1rem;
  background: var(--color-primary);
  color: var(--color-text-inverse);
  border: none;
  border-radius: 0.25rem;
  font-size: 1rem;
  cursor: pointer;
  transition:
    background-color 0.15s ease,
    transform 0.1s ease;

  &:hover {
    background: var(--color-primary-hover);
  }

  &:active {
    transform: scale(0.98);
  }

  &:focus-visible {
    outline: 0.125rem solid currentColor;
    outline-offset: 0.125rem;
  }
}

// CSS Anchor Positioning (Progressive Enhancement)
// Only applies when browser supports anchor positioning
@supports (anchor-name: --trigger) {
  .fpkit-popover-trigger {
    anchor-name: --trigger;
  }

  .fpkit-popover {
    position-anchor: --trigger;

    &[data-placement='top'] {
      bottom: anchor(top);
      left: anchor(center);
      translate: -50% 0;
    }

    &[data-placement='bottom'] {
      top: anchor(bottom);
      left: anchor(center);
      translate: -50% 0;
    }

    &[data-placement='left'] {
      right: anchor(left);
      top: anchor(center);
      translate: 0 -50%;
    }

    &[data-placement='right'] {
      left: anchor(right);
      top: anchor(center);
      translate: 0 -50%;
    }
  }
}