/*
 * Bluesky Comments CSS
 *
 * We use CSS variables to allow for easy theming and customization. Specifically, we use:
 *
 * - Private variables (--_*): Used internally within the component
 * - Public variables (--bc-*): For user customization
 * - Bootstrap variables (--bs-*): Used as fallbacks
 *
 * To customize the appearance:
 * 1. Override Bootstrap variables to affect all Bootstrap components
 * 2. Set --bc-* variables to specifically style this component
 * 3. Use class-specific styles for fine-grained control
 */

 bluesky-comments {
  /* Custom Properties for Theming
   * Each property follows the pattern:
   * --_internal: var(--bc-public, var(--bs-bootstrap, fallback))
   */

  /* Text Colors
   * Control the appearance of various text elements */
  --_text-color: var(--bc-text-color, var(--bs-body-color, #000));       /* Main text color */
  --_muted-text: var(--bc-muted-text, var(--bs-secondary-color, #666));  /* Secondary text color */
  --_link-color: var(--bc-link-color, var(--bs-link-color, #0066cc));    /* Link color */
  --_link-hover-color: var(--bc-link-hover-color,
    var(--bs-link-hover-color, #0052a3));                                /* Link hover color */

  --_muted-bg: var(--bc-muted-bg, rgba(var(--bs-emphasis-color-rgb, 0, 0, 0), 0.05));
  --_muted-fg: var(--bc-muted-fg, rgba(var(--bs-emphasis-color-rgb, 0, 0, 0), 0.65));

  /* Background Colors
   * Define background colors for various component elements */
  --_bg-avatar: var(--bc-avatar-bg, var(--bs-secondary-bg, #eee)); /* Avatar placeholder */

  /* Border Colors
   * Control the appearance of borders and dividers */
  --_border-color: var(--bc-border-color, var(--bs-border-color, #e9ecef)); /* General borders */
  --_thread-line: var(--bc-thread-line, var(--bs-border-color, #eee));      /* Comment thread lines */
  --_thread-line-width: var(--bc-thread-line-width, 2px);

  /* Warning Colors
   * Styles for content warning */
  --_warning-text: var(--bc-warning-text, var(--_muted-fg)); /* Warning text */
  --_warning-bg: var(--bc-warning-bg, var(--_muted-bg));     /* Warning background */

  /* Avatar */
  --_avatar-size: var(--bc-avatar-size, 24px);

  --_border-radius: var(--bc-border-radius, var(--bs-border-radius, 4px));

  /* Base Container Styles */
  display: block;
  margin: 1rem auto;
  max-width: var(--bc-max-width, 800px);
  color: var(--_text-color);
  font-family: system-ui, -apple-system, sans-serif;
}

/* Statistics Display
 * Shows post engagement metrics */
.bc-stats {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin-bottom: 0.5rem;
}

.bc-stats a {
  color: var(--_text-color);
}

.bc-stats a:hover,
.bc-comment__actions a:hover {
  text-decoration: underline;
  color: var(--_link-hover-color);
}

/* Action Links
* Styles for interactive elements */
.bc-stats__link {
  text-decoration: none;
  color: inherit;
  transition: opacity 0.2s;
}

.bc-stats__link:hover {
  opacity: 0.8;
}

.bc-no-wrap {
  white-space: nowrap;
}

.bc-stats__link {
  display: flex;
  align-items: center;
  gap: 0.25rem;
}

.bc-stats__link svg {
  height: 1em;
  width: 1em;
  flex-shrink: 0;
}

.bc-stats__link svg {
  vertical-align: -.125em;
}

/* Avatar Styles
 * User profile pictures and placeholders */
.bc-comment__header__avatar,
.bc-comment__header__avatar--placeholder {
  width: var(--_avatar-size);
  height: var(--_avatar-size);
  border-radius: 50%;
  background-color: var(--_bg-avatar);
}

.bc-comment__header__avatar {
  position: absolute;
  left: calc(-1 * (var(--_avatar-size) + var(--_thread-line-width) + var(--_comment-padding-inline)));
}

/* Comment Styles
 * Individual comment containers and their components */
.bc-comment {
  --_comment-padding-inline: 0.5rem;
  margin: 0;
  padding: 0;
  padding-left: calc(var(--_comment-padding-inline) + var(--_avatar-size, 0) / 2);
  padding-right: var(--_comment-padding-inline);
  border-left: var(--_thread-line-width, 2px) solid var(--_thread-line);
  margin-bottom: 1rem;
  position: relative;
}

.bc-comment p {
  margin-bottom: min(var(--_comment-padding-inline), 1rem);
}

.bc-comment__header {
  position: relative;
  display: flex;
  flex-direction: column;
  padding-bottom: 0.5rem;
}

.bc-comment__body {
  margin-bottom: min(var(--_comment-padding-inline), 1rem);
}

.bc-comment__stats {
  display: flex;
  gap: 1rem;
  margin-top: 0.25rem;
  color: var(--_muted-fg);
  font-size: 0.8em;
}

/* Timestamp Display */
.bc-timestamp-link {
  color: var(--_muted-fg);
  font-size: 0.8rem;
  text-decoration: none;
}

.bc-timestamp-link:hover {
  text-decoration: underline;
  color: var(--_link-hover-color);
}

/* Author Information
 * Styles for user identification */
.bc-author-link {
  text-decoration: none;
  color: var(--_text-color);
}

.bc-author-link:hover {
  text-decoration: underline;
  color: var(--_link-hover-color);
}

/* Reply Thread Styles
 * Visual hierarchy for comment threads */
.bc-comment__replies {
  margin-top: 1rem;
  margin-left: calc(var(--_avatar-size));
}

/* Load More Buttons
 * Controls for expanding comment threads */
.bc-comment__show-more {
  background: none;
  border: none;
  color: var(--_link-color);
  cursor: pointer;
  padding: 0.5rem 1rem;
  font-size: 0.9rem;
}

.bc-comment__show-more:hover {
  text-decoration: underline;
  color: var(--_link-hover-color);
}

/* Status Messages
 * Error and loading state displays */
.bc-error {
  color: var(--_warning-text);
  text-align: center;
}

.bc-loading {
  color: var(--_muted-text);
  animation: bc-fade-in-out 2s ease-in-out infinite;
}

@keyframes bc-fade-in-out {
  0% {
    opacity: 0.5;
  }
  50% {
    opacity: 1;
  }
  100% {
    opacity: 0.5;
  }
}

/* Content Warning System
 * Styles for content warning labels and interactions */
.bc-comment__content-warning {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: min(var(--_comment-padding-inline), 1rem);
  padding: 0.25rem 0.5rem;
  background: var(--_warning-bg);
  border: 1px solid var(--_border-color);
  border-radius: var(--_border-radius);
  font-size: 0.8rem;
}

.bc-comment__content-warning__label {
  color: var(--_warning-text);
  font-weight: 500;
}

.bc-comment__content-warning__button {
  padding: 0.25rem 0.5rem;
  color: var(--_warning-text);
}

.btn-soft {
  --_btn-bg-opacity: 0;
  --_btn-bg-rgb: var(--bs-emphasis-color-rgb);
  --_btn-bg-color: rgba(var(--_btn-bg-rgb), var(--_btn-bg-opacity));
  background-color: var(--_btn-bg-color);
  color: var(--_muted-fg);
  border-color: transparent;
  transition: background-color 0.15s ease-in-out, border-color 0.15s ease-in-out, box-shadow 0.15s ease-in-out;
}

.btn-soft:hover {
  --_btn-bg-opacity: 0.1;
  background-color: var(--_btn-bg-color);
}

.btn-soft:focus {
  outline: 0;
  box-shadow: 0 0 0 0.25rem rgba(var(--_btn-bg-rgb), 0.5);
}

/* ---- Embedded Media ---- */
.bc-comment__embed {
  display: grid;
  gap: 0.25rem;
  max-height: 400px;
  grid-auto-rows: 1fr;
  grid-template-columns: 1fr;
}

/* Single image takes full width */
.bc-comment__embed:has(.bc-comment__embed__item:only-child) {
  grid-template-columns: 1fr;
}

/* Two images split 50/50 */
.bc-comment__embed:has(.bc-comment__embed__item:first-child:nth-last-child(2)) {
  grid-template-columns: 1fr 1fr;
}

/* Three images: first takes left half, others stack on right */
.bc-comment__embed:has(.bc-comment__embed__item:first-child:nth-last-child(3)) {
  grid-template-columns: 1fr 1fr;
}
.bc-comment__embed:has(.bc-comment__embed__item:first-child:nth-last-child(3)) .bc-comment__embed__item:first-child {
  grid-row: 1 / span 2;
}

/* Four images in 2x2 grid */
.bc-comment__embed:has(.bc-comment__embed__item:first-child:nth-last-child(4)) {
  grid-template-columns: 1fr 1fr;
  grid-template-rows: 1fr 1fr;
}

.bc-comment__embed__item {
  width: 100%;
  height: 100%;
  overflow: hidden;
}

.bc-comment__embed__item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}