/**
 * DET Community Forum — styles using v3 design tokens.
 */

.det-forum {
  --det-forum-coral: #f87171;
  --det-forum-coral-muted: rgba(248, 113, 113, 0.18);
  max-width: 960px;
}

/* Toolbar */
.det-forum-toolbar {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-bottom: 20px;
}

.det-forum-search {
  width: 100%;
  padding: 10px 14px 10px 40px;
  border: 1px solid var(--det-border-strong);
  border-radius: var(--det-radius-md);
  background: var(--det-surface);
  color: var(--det-text);
  font-size: 0.95rem;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' fill='%239aa0a6' viewBox='0 0 16 16'%3E%3Cpath d='M11.742 10.344a6.5 6.5 0 1 0-1.397 1.398h-.001l3.85 3.85a1 1 0 0 0 1.415-1.414l-3.85-3.85zm-5.242 1.156a5 5 0 1 1 0-10 5 5 0 0 1 0 10z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: 14px center;
  transition: border-color var(--det-ease), box-shadow var(--det-ease);
}

.det-forum-search::placeholder {
  color: var(--det-text-tertiary);
}

.det-forum-search:focus {
  outline: none;
  border-color: var(--det-accent);
  box-shadow: 0 0 0 3px var(--det-accent-muted);
}

.det-forum-controls {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
}

.det-forum-toggle {
  display: inline-flex;
  border: 1px solid var(--det-border-strong);
  border-radius: var(--det-radius-sm);
  overflow: hidden;
}

.det-forum-toggle__btn {
  padding: 8px 16px;
  border: none;
  background: var(--det-surface);
  color: var(--det-text-secondary);
  font-size: 0.875rem;
  font-weight: 500;
  cursor: pointer;
  transition: background var(--det-ease), color var(--det-ease);
}

.det-forum-toggle__btn:hover {
  background: var(--det-surface-hover);
  color: var(--det-text);
}

.det-forum-toggle__btn.is-active {
  background: var(--det-accent-muted);
  color: var(--det-accent);
}

.det-forum-category-select {
  flex: 1;
  min-width: 180px;
  max-width: 280px;
  padding: 8px 12px;
  border: 1px solid var(--det-border-strong);
  border-radius: var(--det-radius-sm);
  background: var(--det-surface);
  color: var(--det-text);
  font-size: 0.875rem;
}

.det-forum-category-select[hidden] {
  display: none;
}

.det-forum-new-btn {
  margin-left: auto;
  padding: 8px 16px;
  border: none;
  border-radius: var(--det-radius-sm);
  background: var(--det-accent);
  color: #0d0f12;
  font-size: 0.875rem;
  font-weight: 600;
  cursor: pointer;
  transition: opacity var(--det-ease);
}

.det-forum-new-btn:hover {
  opacity: 0.9;
}

.det-forum-new-btn[hidden] {
  display: none;
}

.det-forum-new-placeholder {
  margin-bottom: 16px;
  padding: 14px 16px;
  border: 1px dashed var(--det-border-strong);
  border-radius: var(--det-radius-md);
  background: var(--det-surface-raised);
  color: var(--det-text-secondary);
  font-size: 0.875rem;
}

.det-forum-new-placeholder[hidden] {
  display: none;
}

/* Thread list */
.det-forum-thread-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.det-forum-thread-card {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: 16px;
  border: 1px solid var(--det-border);
  border-radius: var(--det-radius-md);
  background: var(--det-surface);
  transition: border-color var(--det-ease), background var(--det-ease), transform var(--det-ease);
}

.det-forum-thread-card:hover {
  border-color: var(--det-border-strong);
  background: var(--det-surface-raised);
  transform: translateY(-1px);
}

.det-forum-avatar {
  flex-shrink: 0;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--det-accent-muted);
  color: var(--det-accent);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.85rem;
  font-weight: 600;
  overflow: hidden;
}

.det-forum-avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.det-forum-thread-body {
  flex: 1;
  min-width: 0;
}

.det-forum-thread-title {
  margin: 0 0 6px;
  font-size: 1.05rem;
  font-weight: 600;
  line-height: 1.35;
}

.det-forum-thread-title a {
  color: var(--det-text);
  text-decoration: none;
}

.det-forum-thread-title a:hover {
  color: var(--det-accent);
}

.det-forum-thread-title .det-forum-status-icon {
  margin-right: 6px;
  font-size: 0.85rem;
}

.det-forum-thread-title .det-forum-status-icon--locked {
  color: var(--det-text-tertiary);
}

.det-forum-thread-title .det-forum-status-icon--resolved {
  color: var(--det-discovery);
}

.det-forum-thread-meta {
  margin: 0;
  font-size: 0.75rem;
  color: var(--det-text-secondary);
}

.det-forum-thread-meta a {
  color: var(--det-discovery);
  text-decoration: none;
}

.det-forum-thread-meta a:hover {
  text-decoration: underline;
}

.det-forum-comment-count {
  flex-shrink: 0;
  display: flex;
  align-items: center;
  gap: 5px;
  padding: 6px 10px;
  border-radius: var(--det-radius-sm);
  background: var(--det-surface-hover);
  color: var(--det-text-secondary);
  font-size: 0.8rem;
  font-weight: 500;
}

.det-forum-comment-count i {
  color: var(--det-text-tertiary);
}

/* Pagination */
.det-forum-pagination {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 12px;
  margin-top: 24px;
  padding-top: 16px;
  border-top: 1px solid var(--det-border);
}

.det-forum-pagination__btn {
  padding: 8px 14px;
  border: 1px solid var(--det-border-strong);
  border-radius: var(--det-radius-sm);
  background: var(--det-surface);
  color: var(--det-text);
  font-size: 0.875rem;
  cursor: pointer;
  transition: background var(--det-ease);
}

.det-forum-pagination__btn:hover:not(:disabled) {
  background: var(--det-surface-hover);
}

.det-forum-pagination__btn:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

.det-forum-pagination__info {
  font-size: 0.875rem;
  color: var(--det-text-secondary);
}

.det-forum-empty,
.det-forum-loading,
.det-forum-error {
  padding: 32px 16px;
  text-align: center;
  color: var(--det-text-secondary);
  font-size: 0.95rem;
}

.det-forum-error {
  color: var(--det-forum-coral);
}

/* Category groups (Categories view) */
.det-forum-category-group {
  margin-bottom: 24px;
}

.det-forum-category-group__title {
  margin: 0 0 12px;
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--det-text);
}

/* Thread page */
.det-forum-rules {
  margin-bottom: 20px;
  padding: 12px 16px;
  border-left: 3px solid var(--det-accent);
  border-radius: 0 var(--det-radius-sm) var(--det-radius-sm) 0;
  background: var(--det-surface-raised);
  font-size: 0.875rem;
  color: var(--det-text-secondary);
}

.det-forum-rules strong {
  color: var(--det-text);
}

.det-forum-post {
  margin-bottom: 24px;
  padding: 20px;
  border: 1px solid var(--det-border);
  border-radius: var(--det-radius-md);
  background: var(--det-surface);
}

.det-forum-post__header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 8px;
}

.det-forum-post__title {
  margin: 0;
  font-size: 1.35rem;
  font-weight: 600;
  color: var(--det-text);
  flex: 1;
  min-width: 0;
}

.det-forum-post__meta {
  margin: 0 0 16px;
  font-size: 0.75rem;
  color: var(--det-text-secondary);
}

.det-forum-post__body {
  margin: 0;
  font-size: 0.95rem;
  line-height: 1.6;
  color: var(--det-text);
  white-space: pre-wrap;
  word-break: break-word;
}

.det-forum-vote-bar {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-top: 16px;
  padding-top: 14px;
  border-top: 1px solid var(--det-border);
}

.det-forum-vote-up,
.det-forum-vote-down {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 12px;
  border: 1px solid var(--det-border-strong);
  border-radius: var(--det-radius-sm);
  background: var(--det-surface-raised);
  color: var(--det-text-secondary);
  font-size: 0.8rem;
  cursor: pointer;
  transition: background var(--det-ease), border-color var(--det-ease), color var(--det-ease);
}

.det-forum-vote-up:hover,
.det-forum-vote-down:hover {
  background: var(--det-surface-hover);
  color: var(--det-text);
}

.det-forum-vote-up.is-active {
  border-color: var(--det-discovery);
  background: rgba(94, 234, 212, 0.12);
  color: var(--det-discovery);
}

.det-forum-vote-down.is-active {
  border-color: var(--det-forum-coral);
  background: var(--det-forum-coral-muted);
  color: var(--det-forum-coral);
}

.det-forum-vote-score {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--det-text);
  min-width: 2ch;
  text-align: center;
}

.det-forum-comments-header {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
  margin-bottom: 16px;
  padding: 10px 14px;
  border: 1px solid var(--det-border);
  border-radius: var(--det-radius-sm);
  background: var(--det-surface-raised);
  font-size: 0.875rem;
  color: var(--det-text-secondary);
}

.det-forum-comments-header label {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.det-forum-comments-header select {
  padding: 4px 8px;
  border: 1px solid var(--det-border-strong);
  border-radius: var(--det-radius-sm);
  background: var(--det-surface);
  color: var(--det-text);
  font-size: 0.875rem;
}

.det-forum-comment-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.det-forum-comment {
  padding: 14px 16px;
  border: 1px solid var(--det-border);
  border-left: 3px solid transparent;
  border-radius: var(--det-radius-md);
  background: var(--det-surface);
  transition: border-left-color var(--det-ease), background var(--det-ease);
}

.det-forum-comment:hover {
  border-left-color: var(--det-discovery);
  background: var(--det-surface-raised);
}

.det-forum-comment.is-highlight {
  border-left-color: var(--det-accent);
  background: var(--det-accent-muted);
  animation: det-forum-highlight 2s ease-out;
}

@keyframes det-forum-highlight {
  0% {
    background: rgba(228, 248, 138, 0.25);
  }
  100% {
    background: var(--det-accent-muted);
  }
}

.det-forum-comment-header {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin-bottom: 10px;
}

.det-forum-comment-author {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--det-discovery);
  text-decoration: none;
}

.det-forum-comment-author:hover {
  text-decoration: underline;
}

.det-forum-comment-time {
  font-size: 0.75rem;
  color: var(--det-text-tertiary);
}

.det-forum-comment-actions {
  margin-left: auto;
  display: flex;
  align-items: center;
  gap: 4px;
}

.det-forum-flag-btn,
.det-forum-permalink {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  border: none;
  border-radius: var(--det-radius-sm);
  background: transparent;
  color: var(--det-text-tertiary);
  font-size: 0.75rem;
  cursor: pointer;
  text-decoration: none;
  opacity: 0.6;
  transition: opacity var(--det-ease), color var(--det-ease), background var(--det-ease);
}

.det-forum-comment:hover .det-forum-flag-btn,
.det-forum-comment:hover .det-forum-permalink {
  opacity: 1;
}

.det-forum-flag-btn:hover,
.det-forum-permalink:hover {
  color: var(--det-text);
  background: var(--det-surface-hover);
}

.det-forum-comment-body {
  font-size: 0.9rem;
  line-height: 1.55;
  color: var(--det-text);
  white-space: pre-wrap;
  word-break: break-word;
}

.det-forum-comment-footer {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-top: 12px;
  padding-top: 10px;
  border-top: 1px solid var(--det-border);
}

/* Comment form */
.det-forum-comment-form {
  margin-top: 24px;
  padding: 16px;
  border: 1px solid var(--det-border);
  border-radius: var(--det-radius-md);
  background: var(--det-surface-raised);
}

.det-forum-comment-form[hidden] {
  display: none;
}

.det-forum-comment-form label {
  display: block;
  margin-bottom: 8px;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--det-text);
}

.det-forum-comment-form textarea {
  width: 100%;
  min-height: 100px;
  padding: 12px;
  border: 1px solid var(--det-border-strong);
  border-radius: var(--det-radius-sm);
  background: var(--det-surface);
  color: var(--det-text);
  font-size: 0.9rem;
  font-family: inherit;
  resize: vertical;
}

.det-forum-comment-form textarea:focus {
  outline: none;
  border-color: var(--det-accent);
  box-shadow: 0 0 0 3px var(--det-accent-muted);
}

.det-forum-comment-form__actions {
  display: flex;
  justify-content: flex-end;
  margin-top: 10px;
}

.det-forum-comment-form__submit {
  padding: 8px 18px;
  border: none;
  border-radius: var(--det-radius-sm);
  background: var(--det-accent);
  color: #0d0f12;
  font-size: 0.875rem;
  font-weight: 600;
  cursor: pointer;
}

.det-forum-comment-form__submit:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.det-forum-signin-prompt {
  margin-top: 24px;
  padding: 16px;
  border: 1px dashed var(--det-border-strong);
  border-radius: var(--det-radius-md);
  text-align: center;
  font-size: 0.875rem;
  color: var(--det-text-secondary);
}

.det-forum-signin-prompt a {
  color: var(--det-accent);
}

.det-forum-not-found {
  padding: 48px 16px;
  text-align: center;
}

.det-forum-not-found h2 {
  margin: 0 0 8px;
  color: var(--det-text);
}

.det-forum-not-found p {
  color: var(--det-text-secondary);
}

.det-forum-not-found a {
  color: var(--det-discovery);
}

/* New thread page */
.det-forum-new-page__title {
  margin: 0 0 8px;
  font-size: 1.35rem;
  font-weight: 600;
  color: var(--det-text);
}

.det-forum-new-page__lead {
  margin: 0 0 20px;
  font-size: 0.9rem;
  color: var(--det-text-secondary);
  line-height: 1.5;
}

.det-forum-new-error {
  margin-bottom: 16px;
  padding: 12px 14px;
  border: 1px solid var(--det-forum-coral);
  border-radius: var(--det-radius-sm);
  background: var(--det-forum-coral-muted);
  color: var(--det-forum-coral);
  font-size: 0.875rem;
}

.det-forum-new-error[hidden] {
  display: none;
}

.det-forum-new-form {
  padding: 20px;
  border: 1px solid var(--det-border);
  border-radius: var(--det-radius-md);
  background: var(--det-surface);
}

.det-forum-new-field {
  margin-bottom: 18px;
}

.det-forum-new-field label {
  display: block;
  margin-bottom: 8px;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--det-text);
}

.det-forum-new-field input,
.det-forum-new-field select,
.det-forum-new-field textarea {
  width: 100%;
  padding: 10px 12px;
  border: 1px solid var(--det-border-strong);
  border-radius: var(--det-radius-sm);
  background: var(--det-surface-raised);
  color: var(--det-text);
  font-size: 0.9rem;
  font-family: inherit;
}

.det-forum-new-field textarea {
  min-height: 180px;
  resize: vertical;
}

.det-forum-new-field input:focus,
.det-forum-new-field select:focus,
.det-forum-new-field textarea:focus {
  outline: none;
  border-color: var(--det-accent);
  box-shadow: 0 0 0 3px var(--det-accent-muted);
}

.det-forum-new-field input.is-invalid,
.det-forum-new-field select.is-invalid,
.det-forum-new-field textarea.is-invalid {
  border-color: var(--det-forum-coral);
}

.det-forum-new-field__hint {
  margin: 6px 0 0;
  font-size: 0.75rem;
  color: var(--det-text-tertiary);
}

.det-forum-new-field__error {
  margin: 6px 0 0;
  font-size: 0.8rem;
  color: var(--det-forum-coral);
}

.det-forum-new-field__error[hidden] {
  display: none;
}

.det-forum-new-form__actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
  margin-top: 8px;
}

.det-forum-new-form__submit {
  padding: 10px 20px;
  border: none;
  border-radius: var(--det-radius-sm);
  background: var(--det-accent);
  color: #0d0f12;
  font-size: 0.875rem;
  font-weight: 600;
  cursor: pointer;
}

.det-forum-new-form__submit:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

.det-forum-new-form__cancel {
  font-size: 0.875rem;
  color: var(--det-text-secondary);
  text-decoration: none;
}

.det-forum-new-form__cancel:hover {
  color: var(--det-accent);
  text-decoration: underline;
}

@media (max-width: 600px) {
  .det-forum-thread-card {
    flex-wrap: wrap;
    gap: 10px;
  }

  .det-forum-comment-count {
    margin-left: 58px;
  }

  .det-forum-controls {
    flex-direction: column;
    align-items: stretch;
  }

  .det-forum-new-btn {
    margin-left: 0;
    width: 100%;
  }

  .det-forum-category-select {
    max-width: none;
  }

  .det-forum-post__title {
    font-size: 1.15rem;
  }
}

@media (max-width: 320px) {
  .det-forum-thread-card {
    padding: 12px;
  }

  .det-forum-avatar {
    width: 36px;
    height: 36px;
    font-size: 0.75rem;
  }
}

.det-forum-delete-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  border: none;
  border-radius: var(--det-radius-sm, 4px);
  background: transparent;
  color: var(--det-text-tertiary);
  font-size: 0.75rem;
  cursor: pointer;
  opacity: 0;
  transition: opacity 0.15s, color 0.15s, background 0.15s;
}

.det-forum-comment:hover .det-forum-delete-btn,
.det-forum-post:hover .det-forum-delete-btn {
  opacity: 0.6;
}

.det-forum-delete-btn:hover {
  opacity: 1;
  color: #c0392b;
  background: rgba(192, 57, 43, 0.08);
}

.det-forum-new-btn[data-mode="join"] {
  background: transparent;
  border: 1px solid var(--det-accent, #1a73e8);
  color: var(--det-accent, #1a73e8);
}