/* БЛОК: App shell, sidebar, content-wrap */
.app-shell {
  display: flex;
  height: 100vh;
  height: calc(var(--vh, 1vh) * 100);
  height: 100dvh;
  max-height: 100dvh;
  min-height: 0;
  overflow: hidden;
}
.sidebar {
  width: var(--sidebar-width);
  flex-shrink: 0;
  background: var(--sidebar-bg);
  display: flex;
  flex-direction: column;
  border-right: 1px solid var(--yd-border);
  overflow: hidden;
  min-height: 0;
}
.sidebar-head {
  flex-shrink: 0;
  padding: 18px 16px 14px;
  border-bottom: 1px solid var(--yd-border);
  background: linear-gradient(180deg, #fff 0%, #fafafa 100%);
}
.sidebar-head-inner {
  display: flex;
  align-items: center;
  gap: 10px;
  width: 100%;
}
.sidebar-head-inner svg {
  width: 36px;
  height: 36px;
  flex-shrink: 0;
}
.sidebar-head-title {
  font-weight: 600;
  font-size: 16px;
  line-height: 1.25;
  letter-spacing: -0.01em;
}
.sidebar-actions {
  flex-shrink: 0;
  padding: 14px 12px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  border-bottom: 1px solid var(--yd-border);
}
.sidebar-btn-upload {
  width: 100%;
  padding: 11px 14px;
  border: none;
  border-radius: 10px;
  background: var(--yd-red);
  color: #fff;
  font: inherit;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  transition: background 0.15s;
}
.sidebar-btn-upload:hover { background: var(--yd-red-hover); }
.sidebar-btn-upload svg { width: 18px; height: 18px; flex-shrink: 0; }
.sidebar-quick {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
}
.sidebar-quick-btn {
  padding: 8px 10px;
  border: 1px solid var(--yd-border);
  border-radius: 8px;
  background: #fff;
  font: inherit;
  font-size: 13px;
  color: var(--yd-text);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  transition: border-color 0.15s, background 0.15s;
}
.sidebar-quick-btn:hover {
  border-color: #ffc9bd;
  background: #fff8f6;
}
.sidebar-quick-btn svg { width: 15px; height: 15px; flex-shrink: 0; opacity: 0.75; }
.sidebar-pin-action {
  width: 100%;
  margin-top: 4px;
  padding: 8px 10px;
  border: none;
  border-radius: 8px;
  background: transparent;
  font: inherit;
  font-size: 13px;
  color: var(--yd-text-muted);
  cursor: pointer;
  text-align: left;
}
.sidebar-pin-action:hover {
  background: #fff3f0;
  color: var(--yd-red);
}
.sidebar-main {
  flex: 1;
  min-height: 0;
  overflow-y: auto;
  overflow-x: hidden;
  padding: 8px 0 12px;
  scrollbar-width: thin;
  scrollbar-color: #ddd transparent;
}
.sidebar-main::-webkit-scrollbar { width: 4px; }
.sidebar-main::-webkit-scrollbar-thumb { background: #ddd; border-radius: 4px; }
.sidebar-panel { padding: 0 8px; }
.sidebar-panel + .sidebar-panel { margin-top: 12px; padding-top: 12px; border-top: 1px solid var(--yd-border); }
.sidebar-panel-hd {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  padding: 4px 8px 8px;
}
.sidebar-panel-hd span {
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--yd-text-muted);
}
.sidebar-panel-add-btn {
  width: 28px;
  height: 28px;
  min-width: 28px;
  border: none;
  border-radius: 8px;
  background: var(--yd-hover);
  color: var(--yd-red);
  font-size: 18px;
  line-height: 1;
  cursor: pointer;
  flex-shrink: 0;
}
.sidebar-panel-add-btn:hover {
  background: #ffe8e4;
}
.sidebar-rubric-link::before {
  content: '📂 ';
  opacity: 0.85;
}
.sidebar-nav {
  list-style: none;
  margin: 0;
  padding: 0;
}
.sidebar-nav-row {
  display: flex;
  align-items: center;
  gap: 2px;
  padding: 0 4px;
}
.sidebar-nav-row .sidebar-pin-link {
  flex: 1;
  min-width: 0;
}
.sidebar-pin-link {
  display: block;
  width: 100%;
  padding: 7px 10px;
  border: none;
  border-radius: 8px;
  background: transparent;
  font: inherit;
  font-size: 13px;
  text-align: left;
  cursor: pointer;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.sidebar-pin-link:hover { background: var(--yd-hover); }
.sidebar-pin-link.active {
  background: #fff3f0;
  color: var(--yd-red);
  font-weight: 500;
}
.sidebar-nav-remove {
  flex-shrink: 0;
  width: 26px;
  height: 26px;
  border: none;
  border-radius: 6px;
  background: transparent;
  color: var(--yd-text-muted);
  cursor: pointer;
  font-size: 18px;
  line-height: 1;
  opacity: 0;
}
.sidebar-nav-row:hover .sidebar-nav-remove,
.sidebar-nav-remove:focus { opacity: 1; }
.sidebar-nav-remove:hover { background: #ffebee; color: var(--yd-red); }
.sidebar-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.35);
  z-index: 190;
}
.sidebar-overlay.show { display: block; }
.app-main {
  flex: 1;
  min-width: 0;
  min-height: 0;
  display: flex;
  overflow: hidden;
  align-self: stretch;
}
.content-wrap {
  flex: 1;
  min-width: 0;
  min-height: 0;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  background: var(--yd-page-bg);
}
.sidebar-chat-btn {
  display: flex;
  align-items: center;
  gap: 10px;
  width: calc(100% - 16px);
  margin: 0 8px 8px;
  padding: 10px 12px;
  border: 1px solid var(--yd-border);
  border-radius: 10px;
  background: #fff;
  font: inherit;
  font-size: 14px;
  font-weight: 500;
  color: var(--yd-text);
  cursor: pointer;
  text-align: left;
  transition: background 0.15s, border-color 0.15s;
}
.sidebar-chat-btn:hover {
  background: #fff8f6;
  border-color: #ffc9bd;
}
.sidebar-chat-btn.active {
  background: #fff3f0;
  border-color: var(--yd-red);
  color: var(--yd-red);
}
.sidebar-chat-btn svg {
  width: 18px;
  height: 18px;
  flex-shrink: 0;
}
.sidebar-chat-badge {
  margin-left: auto;
  min-width: 18px;
  height: 18px;
  padding: 0 5px;
  border-radius: 9px;
  background: var(--yd-red);
  color: #fff;
  font-size: 11px;
  font-weight: 600;
  line-height: 18px;
  text-align: center;
  display: none;
}
.sidebar-chat-badge.show {
  display: block;
}