/* ============================================================
   VisionCore · Layout v2
   Refined sidebar, top-nav, workspace structure.
   Drop-in replacement for layout.css sections.
   ============================================================ */

/* ---------- APP SHELL ---------- */
.app-container {
  display: flex;
  height: 100vh;
  width: 100vw;
  background: var(--vc-bg);
  color: var(--vc-ink);
  font-family: var(--vc-font-sans);
}

/* ---------- SIDEBAR ---------- */
.sidebar {
  width: 280px;        /* down from 320 */
  flex-shrink: 0;
  background: #0c0c0c;
  border-right: 1px solid var(--vc-panel);
  display: flex;
  flex-direction: column;
  font-size: var(--vc-text-base);
}

.sidebar-header.sidebar-brand {
  padding: 20px 20px 16px;
  border-bottom: 1px solid var(--vc-panel);
  display: flex;
  align-items: center;
  gap: 10px;
}
.sidebar-brand-mark {
  width: 26px; height: 26px;
  border-radius: 7px;
  background: var(--vc-grad-brand);
  position: relative;
  box-shadow: 0 4px 14px rgba(255,42,95,.35);
}
.sidebar-brand-mark::after {
  content: "";
  position: absolute;
  inset: 4px;
  border: 2px solid var(--vc-bg);
  border-radius: 4px;
}
.sidebar-brand-name {
  font-family: var(--vc-font-display);
  font-size: 17px;
  font-weight: 800;
  letter-spacing: -.01em;
  background: none;
  -webkit-text-fill-color: var(--vc-ink);
  color: var(--vc-ink);
}

.folder-list {
  flex: 1;
  overflow-y: auto;
  padding: 12px 10px;
}

/* Section heading */
.folder-section-header {
  padding: 6px 10px 6px;
  background: transparent !important;
  font-size: 10.5px;
  font-weight: 700;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--vc-ink-4);
  border: 0;
}

/* Folder item — denser */
.folder-item {
  padding: 9px 10px !important;
  border-radius: var(--vc-r-sm) !important;
  margin-bottom: 2px !important;
  border: 1px solid transparent !important;
}
.folder-item:hover { background: rgba(255,255,255,.04) !important; }
.folder-item.active {
  background: var(--vc-brand-bg) !important;
  border-color: var(--vc-brand-line) !important;
}
.folder-item strong { font-size: 13px !important; color: var(--vc-ink-2) !important; font-weight: 600 !important; }
.folder-item small  { font-size: 10.5px !important; color: var(--vc-ink-4) !important; font-family: var(--vc-font-mono) !important; }

/* ---------- TOP NAV ---------- */
.top-nav {
  height: 60px !important;        /* down from 80 */
  padding: 0 28px !important;
  border-bottom: 1px solid var(--vc-panel) !important;
  background: var(--vc-bg);
}

.nav-left h1 {
  font-family: var(--vc-font-display) !important;
  font-size: 22px !important;
  font-weight: 700 !important;
  letter-spacing: -.01em !important;
  margin: 0 !important;
}
.nav-left .subtitle {
  font-size: var(--vc-text-sm) !important;
  color: var(--vc-ink-3) !important;
}
.nav-heading-block { gap: 2px; }
.nav-heading-title { font-size: var(--vc-text-md) !important; font-weight: 700; }
.nav-heading-subtitle { font-size: var(--vc-text-xs) !important; }

/* top stats — clean monospace pill */
.top-stats { gap: 6px; }
.top-stat {
  background: transparent !important;
  border: 1px solid var(--vc-line) !important;
  color: var(--vc-ink-3) !important;
  font-family: var(--vc-font-mono);
  font-size: 11px !important;
  font-weight: 500 !important;
  letter-spacing: .02em;
}

/* The Top-nav right side — single primary, rest ghost */
.nav-right { gap: 6px; }
.engine-control-cluster {
  padding: 3px 4px 3px 10px;
  background: transparent;
  border: 1px solid var(--vc-line);
  border-radius: var(--vc-r-md);
}

/* ---------- WORKSPACE TOOLBAR — replaced by sub-bar ---------- */
.workspace-toolbar {
  padding: 10px 28px !important;
  background: #0b0b0b !important;
  border-bottom: 1px solid #141414 !important;
}
.workspace-toolbar-copy strong {
  font-size: 11px !important;
  letter-spacing: .14em !important;
  color: var(--vc-ink-2) !important;
}
.workspace-toolbar-copy span {
  font-size: var(--vc-text-xs) !important;
  color: var(--vc-ink-4) !important;
}

/* ---------- FLOATING ACTION BAR ---------- */
.floating-action-bar {
  background: rgba(15,15,15,.92) !important;
  backdrop-filter: blur(20px);
  border: 1px solid var(--vc-line) !important;
  border-radius: var(--vc-r-lg) !important;
  box-shadow: 0 20px 60px rgba(0,0,0,.6) !important;
  padding: 8px !important;
  gap: 6px !important;
}

/* ---------- MAIN CONTENT ---------- */
.main-content {
  background: var(--vc-bg) !important;
}

/* ---------- GRID CONTAINER ---------- */
.grid-container {
  padding: 20px 28px !important;
}

/* ---------- MODALS — uniform shell ---------- */
.modal {
  background: rgba(0,0,0,.7) !important;
  backdrop-filter: blur(8px) !important;
}
.modal-content,
.modal-panel {
  background: #0e0e0e !important;
  border: 1px solid var(--vc-line) !important;
  border-radius: var(--vc-r-lg) !important;
  box-shadow: 0 30px 80px rgba(0,0,0,.6) !important;
}
.modal-content h3 {
  font-family: var(--vc-font-display);
  font-size: var(--vc-text-lg);
  font-weight: 700;
  letter-spacing: -.01em;
}
.modal-head { padding-bottom: 0; }
.modal-head-lined {
  border-bottom-color: var(--vc-panel) !important;
  padding-bottom: 18px !important;
  margin-bottom: 22px !important;
}

/* ---------- Z-INDEX RATIONALIZATION (audit F4) ----------
   Collapse the 11-layer ladder to 5 semantic layers.
*/
.top-nav { z-index: var(--vc-z-sticky) !important; }
.mobile-menu-overlay { z-index: var(--vc-z-overlay) !important; }
.right-sidebar-overlay,
.right-sidebar { z-index: var(--vc-z-drawer) !important; }

.modal-layer-999,
.modal-layer-1001,
.modal-layer-1003,
.modal-layer-1050,
.modal-layer-1060 { z-index: var(--vc-z-modal) !important; }

.modal-layer-3000,
.modal-layer-3200 { z-index: calc(var(--vc-z-modal) + 1) !important; }

.toast-container { z-index: var(--vc-z-toast) !important; }