* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  --bg-primary: #14161b;
  --bg-secondary: #1b1e25;
  --bg-tertiary: #2a2f3a;
  --bg-card: #1f232b;
  --text-primary: #e7eaef;
  --text-secondary: #b7bec9;
  --text-muted: #8b93a1;
  --accent: #4d7fe0;
  --accent-hover: #6a97ec;
  --accent-rgb: 77, 127, 224;
  --border: #2c313b;
  --success: #4ade80;
}

html, body {
  height: 100%;
  overflow: hidden;
  font-family: 'IBM Plex Sans', -apple-system, BlinkMacSystemFont, sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
}

#app {
  display: flex;
  flex-direction: column;
  height: 100vh;
  width: 100vw;
}

#header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.75rem 1.5rem;
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
}

.header-left {
  display: flex;
  align-items: baseline;
  gap: 1rem;
}

.logo {
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--accent);
  letter-spacing: -0.5px;
}

.tagline {
  font-size: 0.875rem;
  color: var(--text-muted);
}

.header-right {
  display: flex;
  align-items: center;
  gap: 1.5rem;
}

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

.stats .sep {
  margin: 0 0.5rem;
  color: var(--border);
}

#trigger-btn {
  padding: 0.5rem 1rem;
  background: var(--accent);
  border: none;
  border-radius: 4px;
  color: white;
  font-weight: 500;
  cursor: pointer;
  transition: background 0.2s;
}

#trigger-btn:hover {
  background: var(--accent-hover);
}

#main {
  display: flex;
  flex: 1;
  overflow: hidden;
}

#sidebar {
  width: 240px;
  background: var(--bg-secondary);
  border-right: 1px solid var(--border);
  padding: 1rem;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  overflow-y: auto;
  flex-shrink: 0;
}

.sidebar-section h3 {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--text-muted);
  margin-bottom: 0.75rem;
}

.nav-btn {
  display: block;
  width: 100%;
  padding: 0.625rem 0.75rem;
  margin-bottom: 0.25rem;
  background: transparent;
  border: none;
  border-radius: 4px;
  color: var(--text-secondary);
  text-align: left;
  font-size: 0.9rem;
  cursor: pointer;
  transition: all 0.2s;
}

.nav-btn:hover {
  background: var(--bg-tertiary);
  color: var(--text-primary);
}

.nav-btn.active {
  background: var(--bg-tertiary);
  color: var(--accent);
  font-weight: 500;
}

.events-section {
  flex: 1;
  min-height: 0;
  display: flex;
  flex-direction: column;
}

.events-list {
  flex: 1;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.event-item {
  display: flex;
  align-items: flex-start;
  gap: 0.5rem;
  padding: 0.5rem 0.625rem;
  border-radius: 4px;
  cursor: pointer;
  transition: background 0.15s;
  font-size: 0.8rem;
  line-height: 1.3;
}

.event-item:hover {
  background: var(--bg-tertiary);
}

.event-icon {
  flex-shrink: 0;
  font-size: 0.75rem;
  margin-top: 0.1rem;
}

.event-content {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 0.125rem;
}

.event-text {
  color: var(--text-secondary);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  word-break: break-word;
}

.event-time {
  font-size: 0.7rem;
  color: var(--text-muted);
}

.event-empty {
  font-size: 0.8rem;
  color: var(--text-muted);
  padding: 0.5rem 0;
}

#content {
  flex: 1;
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

.view {
  display: none;
  flex-direction: column;
  height: 100%;
  overflow: hidden;
}

.view.active {
  display: flex;
}

.view-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.75rem 1.5rem;
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
  gap: 1rem;
}

.view-header h2 {
  font-size: 1.25rem;
  font-weight: 500;
}

.view-header-actions {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.filter-tabs {
  display: flex;
  gap: 0.25rem;
  background: var(--bg-primary);
  border-radius: 6px;
  padding: 0.2rem;
}

.filter-tab {
  padding: 0.3rem 0.75rem;
  background: transparent;
  border: none;
  border-radius: 4px;
  color: var(--text-secondary);
  font-size: 0.8rem;
  cursor: pointer;
  transition: all 0.15s;
  white-space: nowrap;
}

.filter-tab.active {
  background: var(--bg-tertiary);
  color: var(--accent);
  font-weight: 500;
}

.filter-tab:hover:not(.active) {
  color: var(--text-primary);
}

.post-btn {
  padding: 0.375rem 0.875rem;
  background: var(--accent);
  border: none;
  border-radius: 4px;
  color: white;
  font-size: 0.8rem;
  font-weight: 500;
  cursor: pointer;
  transition: background 0.2s;
  white-space: nowrap;
}

.post-btn:hover {
  background: var(--accent-hover);
}

.refresh-btn {
  padding: 0.375rem 0.75rem;
  background: var(--bg-tertiary);
  border: 1px solid var(--border);
  border-radius: 4px;
  color: var(--text-secondary);
  font-size: 0.8rem;
  cursor: pointer;
  transition: all 0.2s;
}

.refresh-btn:hover {
  background: var(--bg-card);
  color: var(--text-primary);
}

.list {
  flex: 1;
  overflow-y: auto;
  padding: 1rem 1.5rem;
}

.thread-card, .user-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 1rem 1.25rem;
  margin-bottom: 0.75rem;
  cursor: pointer;
  transition: all 0.2s;
}

.thread-card:hover {
  border-color: var(--accent);
  transform: translateY(-1px);
}

.thread-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 0.5rem;
  margin-bottom: 0.5rem;
}

.detail-title-row {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  margin-bottom: 0.5rem;
  flex-wrap: wrap;
}

.user-post-badge {
  display: inline-block;
  padding: 0.15rem 0.5rem;
  background: rgba(var(--accent-rgb), 0.15);
  border: 1px solid rgba(var(--accent-rgb), 0.4);
  border-radius: 3px;
  font-size: 0.7rem;
  color: var(--accent);
  font-weight: 500;
  white-space: nowrap;
  flex-shrink: 0;
  align-self: center;
}

.thread-author.real-user,
.detail-author.real-user {
  color: var(--accent);
  font-weight: 500;
}

.modal {
  position: fixed;
  inset: 0;
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
}

.modal.hidden {
  display: none;
}

.modal-overlay {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.6);
}

.modal-box {
  position: relative;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 10px;
  width: min(520px, calc(100vw - 2rem));
  max-height: calc(100vh - 4rem);
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 1.25rem;
  border-bottom: 1px solid var(--border);
}

.modal-header h3 {
  font-size: 1.1rem;
  font-weight: 500;
}

.modal-close {
  background: none;
  border: none;
  color: var(--text-muted);
  font-size: 1.5rem;
  cursor: pointer;
  line-height: 1;
  padding: 0 0.25rem;
  transition: color 0.15s;
}

.modal-close:hover {
  color: var(--text-primary);
}

.modal-body {
  padding: 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  flex: 1;
  overflow-y: auto;
}

.modal-label {
  font-size: 0.8rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.4px;
}

.modal-input,
.modal-textarea {
  width: 100%;
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: 5px;
  padding: 0.625rem 0.75rem;
  color: var(--text-primary);
  font-family: inherit;
  font-size: 0.95rem;
  resize: vertical;
  transition: border-color 0.15s;
}

.modal-input:focus,
.modal-textarea:focus {
  outline: none;
  border-color: var(--accent);
}

.modal-textarea {
  min-height: 100px;
}

.char-count {
  text-align: right;
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-top: 0.2rem;
  margin-bottom: 0.4rem;
}

.char-count.near-limit {
  color: #e8a020;
}

.char-count.at-limit {
  color: #f87171;
}

.modal-error {
  padding: 0.5rem 0.75rem;
  background: rgba(239, 68, 68, 0.12);
  border: 1px solid rgba(239, 68, 68, 0.35);
  border-radius: 4px;
  color: #f87171;
  font-size: 0.875rem;
}

.modal-error.hidden {
  display: none;
}

.modal-footer {
  padding: 0.75rem 1.25rem;
  border-top: 1px solid var(--border);
  display: flex;
  justify-content: flex-end;
}

.post-submit-btn {
  padding: 0.5rem 1.5rem;
  background: var(--accent);
  border: none;
  border-radius: 5px;
  color: white;
  font-size: 0.9rem;
  font-weight: 500;
  cursor: pointer;
  transition: background 0.2s;
}

.post-submit-btn:hover:not(:disabled) {
  background: var(--accent-hover);
}

.post-submit-btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

.thread-title {
  font-size: 1rem;
  font-weight: 500;
  color: var(--text-primary);
  line-height: 1.3;
}

.thread-meta {
  display: flex;
  gap: 1rem;
  font-size: 0.8rem;
  color: var(--text-muted);
}

.thread-author {
  color: var(--accent);
}

.user-link {
  text-decoration: none;
  color: var(--accent);
  transition: color 0.2s;
}

.user-link:hover {
  color: var(--accent-hover);
  text-decoration: underline;
}

.thread-preview {
  font-size: 0.875rem;
  color: var(--text-secondary);
  line-height: 1.5;
  margin-top: 0.5rem;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.thread-stats {
  display: flex;
  gap: 1rem;
  margin-top: 0.75rem;
  font-size: 0.8rem;
}

.stat {
  display: flex;
  align-items: center;
  gap: 0.25rem;
  color: var(--text-muted);
}

.stat.replies { color: var(--success); }

.user-card {
  cursor: pointer;
}

.user-card:hover {
  border-color: var(--accent);
  transform: translateY(-1px);
}

.user-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 0.5rem;
}

.user-name {
  font-size: 1rem;
  font-weight: 500;
  color: var(--accent);
}

.user-karma {
  font-size: 0.8rem;
  color: var(--text-muted);
}

.user-personality {
  font-size: 0.875rem;
  color: var(--text-secondary);
  line-height: 1.5;
  font-style: italic;
}

.user-stats {
  display: flex;
  gap: 1rem;
  margin-top: 0.75rem;
  font-size: 0.8rem;
  color: var(--text-muted);
}

.back-btn {
  padding: 0.5rem 1rem;
  margin: 1rem 1.5rem;
  background: var(--bg-tertiary);
  border: 1px solid var(--border);
  border-radius: 4px;
  color: var(--text-secondary);
  font-size: 0.875rem;
  cursor: pointer;
  transition: all 0.2s;
  align-self: flex-start;
}

.back-btn:hover {
  background: var(--bg-card);
  color: var(--text-primary);
}

#thread-detail {
  flex: 1;
  overflow-y: auto;
  padding: 0 1.5rem 1.5rem;
}

.detail-post {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 1.25rem;
  margin-bottom: 1rem;
}

.detail-post.original {
  border-color: var(--accent);
}

.detail-title {
  font-size: 1.25rem;
  font-weight: 500;
  margin-bottom: 0.5rem;
}

.detail-meta {
  display: flex;
  gap: 1rem;
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: 1rem;
}

.detail-author {
  color: var(--accent);
  font-weight: 500;
}

.detail-content {
  font-size: 0.95rem;
  line-height: 1.6;
  color: var(--text-primary);
  white-space: pre-wrap;
}

.replies-header {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin: 1.5rem 0 1rem;
  font-size: 1rem;
  color: var(--text-secondary);
}

.reply-card {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 1rem;
  margin-bottom: 0.5rem;
  margin-left: 1.5rem;
  border-left: 3px solid var(--bg-tertiary);
}

.reply-meta {
  display: flex;
  align-items: center;
  gap: 1rem;
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-bottom: 0.5rem;
}

.comment-link-btn {
  margin-left: auto;
  padding: 0.1rem 0.375rem;
  background: transparent;
  border: 1px solid transparent;
  border-radius: 3px;
  color: var(--text-muted);
  font-size: 0.75rem;
  cursor: pointer;
  opacity: 0;
  transition: opacity 0.15s, background 0.15s, color 0.15s;
  line-height: 1;
  flex-shrink: 0;
}

.reply-card:hover .comment-link-btn {
  opacity: 1;
}

.comment-link-btn:hover {
  background: var(--bg-tertiary);
  border-color: var(--border);
  color: var(--accent);
}

.comment-highlighted {
  border-color: var(--accent) !important;
  background: rgba(var(--accent-rgb), 0.08) !important;
  transition: border-color 0.3s, background 0.3s;
}

.reply-content {
  font-size: 0.9rem;
  line-height: 1.5;
  color: var(--text-primary);
  white-space: pre-wrap;
}

.empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 3rem;
  color: var(--text-muted);
  text-align: center;
}

.empty-state h3 {
  font-size: 1.25rem;
  margin-bottom: 0.5rem;
  color: var(--text-secondary);
}

.empty-state p {
  font-size: 0.9rem;
}

.loading {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 2rem;
  color: var(--text-muted);
}

#user-detail {
  flex: 1;
  overflow-y: auto;
  padding: 0 1.5rem 1.5rem;
}

.user-profile {
  background: var(--bg-card);
  border: 1px solid var(--accent);
  border-radius: 8px;
  padding: 1.25rem;
  margin-bottom: 1.5rem;
}

.profile-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 0.75rem;
}

.profile-name {
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--accent);
  margin: 0;
}

.profile-karma {
  font-size: 0.9rem;
  color: var(--text-muted);
}

.profile-personality {
  font-size: 1rem;
  color: var(--text-secondary);
  line-height: 1.5;
  font-style: italic;
  margin-bottom: 1rem;
}

.profile-stats {
  display: flex;
  gap: 1.5rem;
  font-size: 0.85rem;
  color: var(--text-muted);
  padding-top: 0.75rem;
  border-top: 1px solid var(--border);
}

.user-section-header {
  font-size: 1rem;
  font-weight: 500;
  color: var(--text-secondary);
  margin: 1.5rem 0 0.75rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--border);
}

.user-thread-card, .user-post-card {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 0.875rem 1rem;
  margin-bottom: 0.5rem;
  cursor: pointer;
  transition: all 0.2s;
}

.user-thread-card:hover, .user-post-card:hover {
  border-color: var(--accent);
  background: var(--bg-card);
}

.user-thread-title {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--text-primary);
  margin-bottom: 0.375rem;
}

.user-thread-meta {
  display: flex;
  gap: 1rem;
  font-size: 0.8rem;
  color: var(--text-muted);
}

.user-post-thread {
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-bottom: 0.375rem;
}

.user-post-content {
  font-size: 0.9rem;
  color: var(--text-primary);
  line-height: 1.4;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  margin-bottom: 0.375rem;
}

.user-post-meta {
  display: flex;
  gap: 1rem;
  font-size: 0.75rem;
  color: var(--text-muted);
}

@media (max-width: 768px) {
  #sidebar {
    display: none;
  }

  .header-left {
    flex-direction: column;
    gap: 0;
  }

  .tagline {
    display: none;
  }
}