/* ═══════════════════════════════════════════════════════════════════════
   QAIOS Workspace CSS v3.0.0
   Project workspace: channels, threads, messages, mentions
   ════════════════════════════════════════════════════════════════════ */

.is-workspace {
  display: grid;
  grid-template-columns: 220px 1fr;
  height: calc(100vh - 200px);
  min-height: 500px;
  background: var(--q-surface);
  border: 1px solid var(--q-border);
  border-radius: var(--q-radius);
  overflow: hidden;
}

/* ── Sidebar ─────────────────────────────────────────────────── */
.is-ws-sidebar {
  background: var(--q-bg);
  border-right: 1px solid var(--q-border);
  display: flex;
  flex-direction: column;
  overflow-y: auto;
  scrollbar-width: thin;
  scrollbar-color: var(--q-border) transparent;
}

.is-ws-sidebar__header {
  padding: 18px 16px 12px;
  border-bottom: 1px solid var(--q-border);
}

.is-ws-sidebar__project {
  font-size: 13px;
  font-weight: 700;
  color: var(--q-text);
  letter-spacing: -.01em;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.is-ws-channels-label {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .07em;
  text-transform: uppercase;
  color: var(--q-muted2);
  padding: 16px 16px 6px;
}

.is-ws-channel {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 7px 16px;
  font-size: 14px;
  color: var(--q-muted);
  cursor: pointer;
  border-radius: 0;
  transition: background var(--q-transition), color var(--q-transition);
  user-select: none;
}

.is-ws-channel::before { content: '#'; font-weight: 600; opacity: .5; }

.is-ws-channel:hover { background: var(--q-surface2); color: var(--q-text); }
.is-ws-channel.active {
  background: rgba(110,142,251,.12);
  color: var(--q-accent);
  font-weight: 600;
}

.is-ws-add-channel {
  margin: 8px 12px;
  padding: 7px 12px;
  font-size: 13px;
  color: var(--q-muted2);
  cursor: pointer;
  border: 1px dashed var(--q-border);
  border-radius: var(--q-radius-sm);
  text-align: center;
  transition: border-color var(--q-transition), color var(--q-transition);
}

.is-ws-add-channel:hover { border-color: var(--q-accent); color: var(--q-accent); }

/* ── Main pane ───────────────────────────────────────────────── */
.is-ws-main {
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.is-ws-header {
  padding: 14px 20px;
  border-bottom: 1px solid var(--q-border);
  display: flex;
  align-items: center;
  gap: 10px;
}

.is-ws-channel-name {
  font-size: 15px;
  font-weight: 700;
  display: flex;
  align-items: center;
  gap: 6px;
}

.is-ws-channel-name::before { content: '#'; color: var(--q-muted); font-weight: 400; }

.is-ws-channel-desc {
  font-size: 13px;
  color: var(--q-muted);
  border-left: 1px solid var(--q-border);
  padding-left: 12px;
  margin-left: 4px;
}

/* ── Messages area ───────────────────────────────────────────── */
.is-ws-messages {
  flex: 1;
  overflow-y: auto;
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 2px;
  scrollbar-width: thin;
  scrollbar-color: var(--q-border) transparent;
}

.is-ws-msg {
  display: grid;
  grid-template-columns: 36px 1fr;
  gap: 10px;
  padding: 6px 0;
  border-radius: var(--q-radius-sm);
  transition: background var(--q-transition);
}

.is-ws-msg:hover { background: var(--q-surface2); }

.is-ws-msg__avatar {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--q-surface2);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 13px;
  font-weight: 700;
  color: var(--q-accent);
  flex-shrink: 0;
}

.is-ws-msg__meta {
  display: flex;
  align-items: baseline;
  gap: 8px;
  margin-bottom: 3px;
}

.is-ws-msg__name {
  font-size: 14px;
  font-weight: 700;
  color: var(--q-text);
}

.is-ws-msg__time {
  font-size: 11px;
  color: var(--q-muted2);
}

.is-ws-msg__body {
  font-size: 14px;
  line-height: 1.55;
  color: var(--q-text);
  word-break: break-word;
}

.is-ws-msg__body .mention {
  color: var(--q-accent);
  font-weight: 600;
  background: rgba(110,142,251,.1);
  border-radius: 3px;
  padding: 0 3px;
}

/* ── Compose area ────────────────────────────────────────────── */
.is-ws-compose {
  padding: 14px 20px 18px;
  border-top: 1px solid var(--q-border);
}

.is-ws-compose-box {
  display: flex;
  align-items: flex-end;
  gap: 10px;
  background: var(--q-surface2);
  border: 1px solid var(--q-border2);
  border-radius: var(--q-radius-sm);
  padding: 10px 14px;
  transition: border-color var(--q-transition), box-shadow var(--q-transition);
}

.is-ws-compose-box:focus-within {
  border-color: var(--q-accent);
  box-shadow: 0 0 0 3px var(--q-accent-glow);
}

.is-ws-compose-input {
  flex: 1;
  background: none;
  border: none;
  color: var(--q-text);
  font-family: var(--q-font);
  font-size: 14px;
  outline: none;
  resize: none;
  min-height: 24px;
  max-height: 120px;
  overflow-y: auto;
  line-height: 1.5;
  scrollbar-width: thin;
}

.is-ws-compose-input::placeholder { color: var(--q-muted2); }

.is-ws-send-btn {
  flex-shrink: 0;
  background: var(--q-accent);
  border: none;
  border-radius: 6px;
  width: 34px;
  height: 34px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  cursor: pointer;
  transition: opacity var(--q-transition);
}

.is-ws-send-btn:hover { opacity: .85; }
.is-ws-send-btn:disabled { opacity: .4; cursor: not-allowed; }

/* ── Date dividers ───────────────────────────────────────────── */
.is-ws-date-divider {
  display: flex;
  align-items: center;
  gap: 12px;
  margin: 16px 0;
  font-size: 12px;
  color: var(--q-muted2);
  font-weight: 600;
}

.is-ws-date-divider::before,
.is-ws-date-divider::after {
  content: '';
  flex: 1;
  height: 1px;
  background: var(--q-border);
}

/* ── Mobile responsive ───────────────────────────────────────── */
@media (max-width: 700px) {
  .is-workspace {
    grid-template-columns: 1fr;
    height: auto;
  }
  .is-ws-sidebar {
    border-right: none;
    border-bottom: 1px solid var(--q-border);
    max-height: 180px;
  }
  .is-ws-messages { min-height: 300px; }
}


.is-ws-attach-btn{flex-shrink:0;background:transparent;border:none;color:var(--q-muted);width:34px;height:34px;border-radius:6px;display:flex;align-items:center;justify-content:center;cursor:pointer;transition:background var(--q-transition),color var(--q-transition);}
.is-ws-attach-btn:hover{background:var(--q-bg);color:var(--q-text);}
.is-ws-thread-replies{margin:8px 0 0 46px;padding-left:14px;border-left:2px solid var(--q-border);display:flex;flex-direction:column;gap:8px;}
.is-ws-msg__reply{display:none;font-size:12px;color:var(--q-muted);cursor:pointer;margin-top:6px;}
.is-ws-msg:hover .is-ws-msg__reply{display:inline-block;}
@media (max-width:800px){.is-workspace{grid-template-columns:1fr;height:auto;min-height:0;}.is-ws-sidebar{max-height:240px;}.is-ws-messages{min-height:360px;}}

.is-ws-channel-list{display:flex;flex-direction:column;gap:2px;padding-bottom:10px;}

.is-ws-header{min-height:60px;}

.is-ws-main{min-width:0;}

/* ── v3.1 channel name + AI badge ─────────────────────────── */
.is-ws-channel { display: flex; align-items: center; gap: 4px; }
.is-ws-channel-name { flex: 1; min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.is-ws-channel-ai-badge {
  font-size: 9px;
  font-weight: 700;
  padding: 1px 4px;
  border-radius: 3px;
  background: rgba(200,169,110,.2);
  color: #a07c30;
  flex-shrink: 0;
  letter-spacing: .04em;
}

/* ══════════════════════════════════════════════════════════════
   QAIOS Workspace v3.1.2 — Items 6 & 8
   ══════════════════════════════════════════════════════════════ */

/* ── Item 6: File upload modal ──────────────────────────────── */
#is-ws-attach-modal { display: none; }

.is-ws-file-preview { margin-top: 6px; }
.is-ws-img-preview  {
  max-width: 320px;
  max-height: 240px;
  border-radius: 6px;
  display: block;
  margin-top: 6px;
  border: 1px solid var(--q-border, #e0d8cc);
}
.is-ws-file-name   { font-size: 11px; color: var(--q-muted2, #888); margin-top: 2px; display: block; }
.is-ws-file-link   {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: 12px;
  color: var(--q-accent, #c8a96e);
  text-decoration: none;
  margin-top: 4px;
}
.is-ws-file-link:hover { text-decoration: underline; }

.is-ws-upload-progress {
  padding: 6px 12px;
  background: var(--q-surface2, #f7f5f1);
  border-radius: 6px;
  font-size: 13px;
  margin: 6px 0;
  color: var(--q-muted);
  animation: is-pulse 1.2s ease-in-out infinite;
}
@keyframes is-pulse {
  0%, 100% { opacity: 1; }
  50%       { opacity: .5; }
}

/* ── Item 8: Mention dropdown polish ────────────────────────── */
.is-mention-dropdown {
  border-radius: 10px;
  box-shadow: 0 6px 24px rgba(0,0,0,.15);
  min-width: 240px;
}
.is-mention-item {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  cursor: pointer;
  transition: background .12s;
}
.is-mention-item:hover,
.is-mention-item.is--active { background: var(--q-surface2, #f7f5f1); }

.is-mention-item__avatar {
  width: 26px;
  height: 26px;
  border-radius: 50%;
  background: var(--q-accent, #c8a96e);
  color: #fff;
  font-size: 12px;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.is-mention-item__name  { font-size: 13px; font-weight: 600; color: var(--q-text); flex: 1; }
.is-mention-item__login { font-size: 11px; color: var(--q-muted2, #888); }