/* ═══════════════════════════════════
   Nexus — Research Communication Hub
   ═══════════════════════════════════ */

.nx-wrap {
  height: calc(100vh - 4rem);
  min-height: 520px;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.nx-layout {
  display: grid;
  grid-template-columns: 220px 1fr 0px;
  grid-template-rows: 1fr;
  height: 100%;
  overflow: hidden;
  transition: grid-template-columns 0.2s ease;
}

.nx-layout.nx-has-thread {
  grid-template-columns: 220px 1fr 320px;
}

/* ── Sidebar ── */
.nx-sidebar {
  background: #0d1117;
  border-right: 1px solid #21262d;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.nx-sidebar-header {
  padding: 1rem;
  border-bottom: 1px solid #21262d;
}

.nx-workspace-name {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  font-weight: 700;
  font-size: 0.85rem;
  color: #e6edf3;
  letter-spacing: 0.01em;
}

.nx-workspace-sub {
  font-size: 0.7rem;
  color: #8b949e;
  margin-top: 0.2rem;
  padding-left: 1.2rem;
}

.nx-sidebar-section {
  padding: 0.75rem 0;
  flex: 1;
  overflow-y: auto;
}

.nx-sidebar-label {
  font-size: 0.65rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: #8b949e;
  padding: 0 1rem 0.4rem;
}

.nx-channel-list {
  display: flex;
  flex-direction: column;
  gap: 1px;
}

.nx-ch-item {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.3rem 0.75rem;
  font-size: 0.8rem;
  color: #8b949e;
  background: transparent;
  border: none;
  cursor: pointer;
  width: 100%;
  text-align: left;
  border-radius: 4px;
  margin: 0 0.25rem;
  width: calc(100% - 0.5rem);
  transition: background 0.15s, color 0.15s;
}

.nx-ch-item:hover {
  background: #161b22;
  color: #e6edf3;
}

.nx-ch-active {
  background: #1f2a3a;
  color: #e6edf3;
}

.nx-ch-icon {
  font-weight: 700;
  font-size: 0.9rem;
  flex-shrink: 0;
}

.nx-ch-name {
  flex: 1;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.nx-ch-badge {
  background: #58a6ff;
  color: #0d1117;
  font-size: 0.6rem;
  font-weight: 700;
  padding: 0 0.3rem;
  border-radius: 10px;
  min-width: 1.1rem;
  text-align: center;
}

.nx-sidebar-footer {
  border-top: 1px solid #21262d;
  padding: 0.75rem 1rem;
}

.nx-profile-pill {
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.nx-profile-info { flex: 1; overflow: hidden; }

.nx-profile-name {
  font-size: 0.78rem;
  font-weight: 600;
  color: #e6edf3;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.nx-profile-status {
  font-size: 0.65rem;
  color: #3fb950;
  display: flex;
  align-items: center;
  gap: 0.3rem;
}

.nx-status-dot {
  display: inline-block;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: #3fb950;
}

/* ── Avatar ── */
.nx-avatar {
  width: 32px;
  height: 32px;
  border-radius: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.65rem;
  font-weight: 700;
  color: #0d1117;
  flex-shrink: 0;
  letter-spacing: 0.01em;
}

/* ── Main panel ── */
.nx-main {
  display: flex;
  flex-direction: column;
  overflow: hidden;
  background: #161b22;
}

.nx-channel-header {
  padding: 0.9rem 1.25rem 0.6rem;
  border-bottom: 1px solid #21262d;
  background: #161b22;
  flex-shrink: 0;
}

.nx-ch-header-name {
  display: flex;
  align-items: center;
  gap: 0.35rem;
  font-weight: 700;
  font-size: 0.95rem;
  color: #e6edf3;
}

.nx-ch-hash {
  font-weight: 700;
  font-size: 1.05rem;
}

.nx-ch-header-desc {
  font-size: 0.73rem;
  color: #8b949e;
  margin-top: 0.25rem;
}

.nx-pinned-strip {
  display: flex;
  align-items: center;
  gap: 0.3rem;
  margin-top: 0.5rem;
  font-size: 0.7rem;
  color: #e3b341;
  background: rgba(227, 179, 65, 0.08);
  padding: 0.2rem 0.5rem;
  border-radius: 4px;
  width: fit-content;
}

/* ── Messages list ── */
.nx-messages-list {
  flex: 1;
  overflow-y: auto;
  padding: 0.5rem 0.5rem 0;
  scroll-behavior: smooth;
}

.nx-empty-ch {
  text-align: center;
  color: #8b949e;
  font-size: 0.8rem;
  padding: 3rem 1rem;
}

/* ── Individual message ── */
.nx-message {
  display: flex;
  gap: 0.65rem;
  padding: 0.45rem 0.75rem;
  border-radius: 6px;
  position: relative;
  transition: background 0.1s;
}

.nx-message:hover {
  background: rgba(255,255,255,0.03);
}

.nx-message:hover .nx-msg-actions {
  opacity: 1;
}

.nx-msg-pinned {
  border-left: 2px solid #e3b341;
  background: rgba(227, 179, 65, 0.04);
}

.nx-msg-body { flex: 1; min-width: 0; }

.nx-msg-header {
  display: flex;
  align-items: baseline;
  gap: 0.5rem;
  flex-wrap: wrap;
  margin-bottom: 0.2rem;
}

.nx-msg-author {
  font-weight: 700;
  font-size: 0.82rem;
  color: #e6edf3;
}

.nx-msg-role {
  font-size: 0.68rem;
  color: #8b949e;
  background: rgba(139, 148, 158, 0.12);
  padding: 0.05rem 0.35rem;
  border-radius: 3px;
}

.nx-msg-time {
  font-size: 0.68rem;
  color: #8b949e;
  margin-left: auto;
}

.nx-pinned-badge {
  display: flex;
  align-items: center;
  gap: 0.2rem;
  font-size: 0.62rem;
  color: #e3b341;
}

.nx-msg-text {
  font-size: 0.82rem;
  color: #c9d1d9;
  line-height: 1.55;
  word-break: break-word;
}

.nx-mention {
  color: #58a6ff;
  background: rgba(88, 166, 255, 0.1);
  padding: 0.05rem 0.2rem;
  border-radius: 3px;
  font-weight: 600;
}

.nx-code {
  font-family: 'Cascadia Code', 'Fira Code', monospace;
  font-size: 0.78rem;
  background: #0d1117;
  color: #f0883e;
  padding: 0.05rem 0.3rem;
  border-radius: 3px;
  border: 1px solid #21262d;
}

/* ── Reactions ── */
.nx-reactions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.25rem;
  margin-top: 0.35rem;
}

.nx-reaction {
  display: inline-flex;
  align-items: center;
  gap: 0.2rem;
  font-size: 0.7rem;
  color: #8b949e;
  background: rgba(139, 148, 158, 0.1);
  border: 1px solid rgba(139, 148, 158, 0.2);
  border-radius: 10px;
  padding: 0.1rem 0.4rem;
  cursor: pointer;
  transition: background 0.15s, border-color 0.15s;
}

.nx-reaction:hover {
  background: rgba(88, 166, 255, 0.1);
  border-color: rgba(88, 166, 255, 0.4);
  color: #58a6ff;
}

/* ── Thread button ── */
.nx-thread-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
  margin-top: 0.35rem;
  font-size: 0.7rem;
  color: #58a6ff;
  background: transparent;
  border: none;
  cursor: pointer;
  padding: 0;
  transition: color 0.15s;
}

.nx-thread-btn:hover { color: #79c0ff; }

/* ── Message hover actions ── */
.nx-msg-actions {
  position: absolute;
  top: 0.3rem;
  right: 0.5rem;
  display: flex;
  gap: 0.2rem;
  opacity: 0;
  background: #161b22;
  border: 1px solid #21262d;
  border-radius: 6px;
  padding: 0.15rem;
  transition: opacity 0.15s;
}

.nx-msg-action {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 26px;
  height: 26px;
  border: none;
  background: transparent;
  cursor: pointer;
  color: #8b949e;
  border-radius: 4px;
  transition: background 0.1s, color 0.1s;
}

.nx-msg-action:hover { background: #21262d; color: #e6edf3; }

/* ── Composer ── */
.nx-composer {
  padding: 0.75rem 1rem;
  border-top: 1px solid #21262d;
  flex-shrink: 0;
  display: flex;
  align-items: flex-end;
  gap: 0.5rem;
  background: #161b22;
}

.nx-composer-input {
  flex: 1;
  background: #0d1117;
  border: 1px solid #30363d;
  border-radius: 8px;
  color: #e6edf3;
  font-size: 0.82rem;
  padding: 0.6rem 0.8rem;
  resize: none;
  min-height: 2.4rem;
  max-height: 8rem;
  line-height: 1.5;
  font-family: inherit;
  transition: border-color 0.15s;
  overflow-y: auto;
}

.nx-composer-input:focus {
  outline: none;
  border-color: #58a6ff;
}

.nx-composer-input::placeholder { color: #8b949e; }

.nx-composer-actions { display: flex; align-items: flex-end; }

.nx-send-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  background: #238636;
  border: none;
  border-radius: 6px;
  cursor: pointer;
  color: #fff;
  transition: background 0.15s;
  flex-shrink: 0;
}

.nx-send-btn:hover { background: #2ea043; }

/* ── Thread panel ── */
.nx-thread {
  background: #0d1117;
  border-left: 1px solid #21262d;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  width: 0;
  opacity: 0;
  transition: width 0.2s ease, opacity 0.2s ease;
}

.nx-thread-open {
  width: 320px;
  opacity: 1;
}

.nx-thread-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.9rem 1rem;
  border-bottom: 1px solid #21262d;
  flex-shrink: 0;
}

.nx-thread-title {
  font-weight: 700;
  font-size: 0.85rem;
  color: #e6edf3;
}

.nx-thread-close {
  background: transparent;
  border: none;
  color: #8b949e;
  cursor: pointer;
  display: flex;
  align-items: center;
  padding: 0.2rem;
  border-radius: 4px;
  transition: color 0.15s, background 0.15s;
}

.nx-thread-close:hover { color: #e6edf3; background: #21262d; }

.nx-thread-parent {
  border-bottom: 1px solid #21262d;
  padding: 0.25rem 0;
  flex-shrink: 0;
}

.nx-thread-divider {
  font-size: 0.68rem;
  color: #8b949e;
  padding: 0.5rem 1rem;
  text-align: center;
  flex-shrink: 0;
}

.nx-thread-replies {
  flex: 1;
  overflow-y: auto;
  padding: 0.25rem 0;
}

.nx-thread-composer {
  display: flex;
  gap: 0.4rem;
  padding: 0.6rem 0.75rem;
  border-top: 1px solid #21262d;
  flex-shrink: 0;
  align-items: flex-end;
}

/* ── Mobile adjustments ── */
@media (max-width: 700px) {
  .nx-layout { grid-template-columns: 1fr; }
  .nx-sidebar { display: none; }
  .nx-thread { display: none; }
  .nx-wrap { height: calc(100vh - 3.5rem); }
}

/* ── Realtime: new message slide-in animation ── */
@keyframes nx-msg-in {
  from { opacity: 0; transform: translateY(6px); }
  to   { opacity: 1; transform: translateY(0); }
}

.nx-msg-new {
  animation: nx-msg-in 0.22s ease forwards;
  will-change: opacity, transform;
}

/* ── Realtime: online count in sidebar ── */
#nx-online-count {
  font-size: 0.65rem;
  color: #3fb950;
  margin-left: 0.25rem;
  transition: opacity 0.2s;
}

/* Live indicator dot on the workspace name */
#nx-online-count[data-rt="live"]::before {
  content: '';
  display: inline-block;
  width: 6px;
  height: 6px;
  background: #3fb950;
  border-radius: 50%;
  margin-right: 0.25rem;
  vertical-align: middle;
  animation: nx-pulse 2s ease-in-out infinite;
  will-change: opacity;
}

#nx-online-count[data-rt="offline"]::before {
  content: '';
  display: inline-block;
  width: 6px;
  height: 6px;
  background: #8b949e;
  border-radius: 50%;
  margin-right: 0.25rem;
  vertical-align: middle;
}

@keyframes nx-pulse {
  0%, 100% { opacity: 1; }
  50%       { opacity: 0.4; }
}