/* ================================================================
   collaboration.css — Activity Feed, Presence Indicators, Comments
   ================================================================ */

/* ── CSS Variables (inherit from project theme) ── */
:root {
  --collab-primary: #5a189a;
  --collab-primary-light: rgba(90, 24, 154, 0.12);
  --collab-accent: #9d4edd;
  --collab-surface: #ffffff;
  --collab-border: rgba(0, 0, 0, 0.08);
  --collab-text: #1a1a2e;
  --collab-text-muted: #6b7280;
  --collab-shadow: 0 4px 24px rgba(0, 0, 0, 0.1);
  --collab-radius: 12px;
  --collab-radius-sm: 8px;
}

body.dark {
  --collab-surface: #1e1b2e;
  --collab-border: rgba(255, 255, 255, 0.08);
  --collab-text: #f0eaff;
  --collab-text-muted: #9ca3af;
  --collab-shadow: 0 4px 24px rgba(0, 0, 0, 0.4);
  --collab-primary-light: rgba(157, 78, 221, 0.15);
}

/* ================================================================
   PRESENCE INDICATOR
   ================================================================ */

.presence-bar {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 4px 8px;
  background: var(--collab-primary-light);
  border-radius: 20px;
  border: 1px solid rgba(90, 24, 154, 0.2);
  cursor: default;
  position: relative;
}

body.dark .presence-bar {
  border-color: rgba(157, 78, 221, 0.25);
}

.presence-bar .presence-label {
  font-size: 0.72rem;
  font-weight: 600;
  color: var(--collab-primary);
  letter-spacing: 0.02em;
  white-space: nowrap;
}

body.dark .presence-bar .presence-label {
  color: #c084fc;
}

.presence-avatars {
  display: flex;
  align-items: center;
}

.presence-avatar {
  width: 26px;
  height: 26px;
  border-radius: 50%;
  border: 2px solid var(--collab-surface);
  background: var(--collab-primary);
  color: #fff;
  font-size: 0.65rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-left: -6px;
  position: relative;
  transition: transform 0.2s ease;
  cursor: pointer;
  text-transform: uppercase;
  flex-shrink: 0;
}

.presence-avatar:first-child {
  margin-left: 0;
}

.presence-avatar:hover {
  transform: translateY(-2px) scale(1.1);
  z-index: 10;
}

.presence-avatar img {
  width: 100%;
  height: 100%;
  border-radius: 50%;
  object-fit: cover;
}

.presence-avatar .presence-dot {
  position: absolute;
  bottom: -1px;
  right: -1px;
  width: 8px;
  height: 8px;
  background: #22c55e;
  border-radius: 50%;
  border: 1.5px solid var(--collab-surface);
}

.presence-avatar-tooltip {
  position: absolute;
  bottom: calc(100% + 8px);
  left: 50%;
  transform: translateX(-50%);
  background: var(--collab-text);
  color: var(--collab-surface);
  font-size: 0.72rem;
  padding: 4px 8px;
  border-radius: 6px;
  white-space: nowrap;
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.15s ease;
  z-index: 100;
}

.presence-avatar:hover .presence-avatar-tooltip {
  opacity: 1;
}

.presence-overflow {
  width: 26px;
  height: 26px;
  border-radius: 50%;
  border: 2px solid var(--collab-surface);
  background: var(--collab-text-muted);
  color: #fff;
  font-size: 0.6rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-left: -6px;
  flex-shrink: 0;
}

/* ================================================================
   ACTIVITY FEED TOGGLE BUTTON
   ================================================================ */

.activity-toggle-btn {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 6px 12px;
  background: var(--collab-primary-light);
  border: 1px solid rgba(90, 24, 154, 0.2);
  border-radius: 20px;
  color: var(--collab-primary);
  font-size: 0.78rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s ease;
  white-space: nowrap;
}

body.dark .activity-toggle-btn {
  color: #c084fc;
  border-color: rgba(157, 78, 221, 0.25);
}

.activity-toggle-btn:hover {
  background: rgba(90, 24, 154, 0.2);
  transform: translateY(-1px);
}

.activity-toggle-btn .activity-badge {
  background: var(--collab-primary);
  color: #fff;
  border-radius: 10px;
  padding: 1px 6px;
  font-size: 0.65rem;
  font-weight: 700;
  min-width: 18px;
  text-align: center;
}

/* ================================================================
   ACTIVITY FEED PANEL (slide-in drawer)
   ================================================================ */

.activity-feed-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.3);
  z-index: 900;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.25s ease;
}

.activity-feed-overlay.open {
  opacity: 1;
  pointer-events: all;
}

.activity-feed-panel {
  position: fixed;
  top: 0;
  right: 0;
  width: 360px;
  max-width: 95vw;
  height: 100vh;
  background: var(--collab-surface);
  border-left: 1px solid var(--collab-border);
  box-shadow: -4px 0 32px rgba(0, 0, 0, 0.15);
  z-index: 901;
  display: flex;
  flex-direction: column;
  transform: translateX(100%);
  transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.activity-feed-panel.open {
  transform: translateX(0);
}

.activity-feed-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 20px;
  border-bottom: 1px solid var(--collab-border);
  flex-shrink: 0;
}

.activity-feed-header h3 {
  font-size: 1rem;
  font-weight: 700;
  color: var(--collab-text);
  display: flex;
  align-items: center;
  gap: 8px;
  margin: 0;
}

.activity-feed-header h3 i {
  color: var(--collab-primary);
}

.activity-feed-close {
  width: 32px;
  height: 32px;
  border-radius: 8px;
  border: none;
  background: var(--collab-primary-light);
  color: var(--collab-primary);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.9rem;
  transition: background 0.2s;
}

.activity-feed-close:hover {
  background: rgba(90, 24, 154, 0.2);
}

body.dark .activity-feed-close {
  color: #c084fc;
}

.activity-feed-tabs {
  display: flex;
  border-bottom: 1px solid var(--collab-border);
  flex-shrink: 0;
}

.activity-tab {
  flex: 1;
  padding: 10px;
  border: none;
  background: none;
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--collab-text-muted);
  cursor: pointer;
  border-bottom: 2px solid transparent;
  transition: all 0.2s;
}

.activity-tab.active {
  color: var(--collab-primary);
  border-bottom-color: var(--collab-primary);
}

body.dark .activity-tab.active {
  color: #c084fc;
  border-bottom-color: #c084fc;
}

.activity-feed-body {
  flex: 1;
  overflow-y: auto;
  padding: 12px 0;
}

.activity-feed-body::-webkit-scrollbar {
  width: 4px;
}

.activity-feed-body::-webkit-scrollbar-track {
  background: transparent;
}

.activity-feed-body::-webkit-scrollbar-thumb {
  background: var(--collab-border);
  border-radius: 4px;
}

/* ── Activity Items ── */
.activity-item {
  display: flex;
  gap: 12px;
  padding: 10px 20px;
  transition: background 0.15s;
}

.activity-item:hover {
  background: var(--collab-primary-light);
}

.activity-item-avatar {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--collab-primary);
  color: #fff;
  font-size: 0.7rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  text-transform: uppercase;
}

.activity-item-avatar img {
  width: 100%;
  height: 100%;
  border-radius: 50%;
  object-fit: cover;
}

.activity-item-content {
  flex: 1;
  min-width: 0;
}

.activity-item-text {
  font-size: 0.82rem;
  color: var(--collab-text);
  line-height: 1.4;
}

.activity-item-text strong {
  font-weight: 700;
  color: var(--collab-primary);
}

body.dark .activity-item-text strong {
  color: #c084fc;
}

.activity-item-meta {
  display: flex;
  align-items: center;
  gap: 6px;
  margin-top: 3px;
}

.activity-item-time {
  font-size: 0.72rem;
  color: var(--collab-text-muted);
}

.activity-item-feature {
  font-size: 0.68rem;
  padding: 1px 6px;
  border-radius: 4px;
  background: var(--collab-primary-light);
  color: var(--collab-primary);
  font-weight: 600;
}

body.dark .activity-item-feature {
  color: #c084fc;
}

.activity-empty {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 48px 24px;
  color: var(--collab-text-muted);
  text-align: center;
  gap: 12px;
}

.activity-empty i {
  font-size: 2.5rem;
  opacity: 0.4;
}

.activity-empty p {
  font-size: 0.85rem;
  margin: 0;
}

.activity-loading {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 32px;
  color: var(--collab-text-muted);
  gap: 10px;
  font-size: 0.85rem;
}

/* ================================================================
   COMMENTS PANEL (tab inside activity feed)
   ================================================================ */

.comments-list {
  padding: 0;
}

.comment-item {
  padding: 12px 20px;
  border-bottom: 1px solid var(--collab-border);
  transition: background 0.15s;
}

.comment-item:last-child {
  border-bottom: none;
}

.comment-item:hover {
  background: var(--collab-primary-light);
}

.comment-header {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 6px;
}

.comment-avatar {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--collab-primary);
  color: #fff;
  font-size: 0.65rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  text-transform: uppercase;
}

.comment-avatar img {
  width: 100%;
  height: 100%;
  border-radius: 50%;
  object-fit: cover;
}

.comment-author {
  font-size: 0.82rem;
  font-weight: 700;
  color: var(--collab-text);
}

.comment-time {
  font-size: 0.7rem;
  color: var(--collab-text-muted);
  margin-left: auto;
}

.comment-context-tag {
  font-size: 0.68rem;
  padding: 1px 6px;
  border-radius: 4px;
  background: var(--collab-primary-light);
  color: var(--collab-primary);
  font-weight: 600;
}

body.dark .comment-context-tag {
  color: #c084fc;
}

.comment-body {
  font-size: 0.83rem;
  color: var(--collab-text);
  line-height: 1.5;
  padding-left: 36px;
  word-break: break-word;
}

.comment-actions {
  display: flex;
  gap: 12px;
  padding-left: 36px;
  margin-top: 6px;
}

.comment-action-btn {
  background: none;
  border: none;
  font-size: 0.72rem;
  color: var(--collab-text-muted);
  cursor: pointer;
  padding: 2px 0;
  display: flex;
  align-items: center;
  gap: 4px;
  transition: color 0.15s;
}

.comment-action-btn:hover {
  color: var(--collab-primary);
}

body.dark .comment-action-btn:hover {
  color: #c084fc;
}

/* Thread replies */
.comment-replies {
  margin-top: 8px;
  padding-left: 36px;
  border-left: 2px solid var(--collab-border);
  margin-left: 14px;
}

.comment-reply-item {
  padding: 8px 0 8px 12px;
}

.comment-reply-item .comment-header {
  margin-bottom: 4px;
}

.comment-reply-item .comment-body {
  padding-left: 0;
  font-size: 0.8rem;
}

/* Comment input */
.comment-input-area {
  padding: 12px 20px;
  border-top: 1px solid var(--collab-border);
  flex-shrink: 0;
  background: var(--collab-surface);
}

.comment-context-selector {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 8px;
}

.comment-context-selector label {
  font-size: 0.72rem;
  color: var(--collab-text-muted);
  font-weight: 600;
  white-space: nowrap;
}

.comment-context-selector select {
  flex: 1;
  font-size: 0.78rem;
  padding: 4px 8px;
  border: 1px solid var(--collab-border);
  border-radius: 6px;
  background: var(--collab-surface);
  color: var(--collab-text);
  outline: none;
}

.comment-input-row {
  display: flex;
  gap: 8px;
  align-items: flex-end;
}

.comment-textarea {
  flex: 1;
  resize: none;
  border: 1px solid var(--collab-border);
  border-radius: 10px;
  padding: 8px 12px;
  font-size: 0.83rem;
  font-family: inherit;
  background: var(--collab-surface);
  color: var(--collab-text);
  outline: none;
  min-height: 38px;
  max-height: 120px;
  transition: border-color 0.2s;
  line-height: 1.4;
}

.comment-textarea:focus {
  border-color: var(--collab-primary);
}

.comment-textarea::placeholder {
  color: var(--collab-text-muted);
}

.comment-send-btn {
  width: 36px;
  height: 36px;
  border-radius: 10px;
  border: none;
  background: var(--collab-primary);
  color: #fff;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.85rem;
  transition: all 0.2s;
  flex-shrink: 0;
}

.comment-send-btn:hover {
  background: var(--collab-accent);
  transform: scale(1.05);
}

.comment-send-btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  transform: none;
}

/* Reply input (inline) */
.reply-input-area {
  margin-top: 8px;
  padding-left: 12px;
  display: flex;
  gap: 6px;
  align-items: flex-end;
}

.reply-input-area .comment-textarea {
  font-size: 0.78rem;
}

.reply-input-area .comment-send-btn {
  width: 30px;
  height: 30px;
  font-size: 0.75rem;
}

/* ================================================================
   RESPONSIVE
   ================================================================ */

@media (max-width: 600px) {
  .activity-feed-panel {
    width: 100vw;
  }

  .presence-bar .presence-label {
    display: none;
  }
}