/* ============================================================
   COMMAND INTELLIGENCE - LAYOUT SYSTEM
   ============================================================ */

/* ---- App Shell ---- */
.app-layout {
  display: flex;
  flex-direction: column;
  height: 100vh;
  overflow: hidden;
  background-color: var(--bg-primary);
}

/* ---- Top App Bar ---- */
.app-bar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: var(--z-fixed);
  height: var(--topbar-height);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 var(--space-4);
  background-color: var(--bg-surface-container-low);
  border-bottom: 1px solid var(--color-border);
  flex-shrink: 0;
}

.app-bar-brand {
  font-family: var(--font-data);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--text-primary);
  text-transform: uppercase;
}

.app-bar-actions {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.app-bar-icon-btn {
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
  border-radius: var(--radius-md);
  transition: color var(--transition-fast), background-color var(--transition-fast);
}
.app-bar-icon-btn:hover {
  color: var(--text-primary);
  background-color: var(--bg-surface-container);
}

/* ---- Sidebar ---- */
.sidebar {
  position: fixed;
  top: var(--topbar-height);
  left: 0;
  bottom: var(--footer-height);
  z-index: var(--z-sticky);
  width: var(--sidebar-width-collapsed);
  background-color: var(--bg-surface-container-low);
  border-right: 1px solid var(--color-border);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  transition: width var(--transition-slow);
  flex-shrink: 0;
}
.sidebar:hover {
  width: var(--sidebar-width-expanded);
}

.sidebar-header {
  padding: var(--space-4) var(--space-4);
  border-bottom: 1px solid var(--color-border);
  overflow: hidden;
  white-space: nowrap;
  flex-shrink: 0;
}

.sidebar-title {
  font-family: var(--font-data);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.06em;
  color: var(--text-primary);
}

.sidebar-subtitle {
  font-family: var(--font-data);
  font-size: 10px;
  font-weight: 500;
  letter-spacing: 0.04em;
  color: var(--text-muted);
  margin-top: 2px;
}

.sidebar-nav {
  flex: 1;
  overflow-y: auto;
  overflow-x: hidden;
  padding: var(--space-2) 0;
}

.sidebar-nav-item {
  display: flex;
  align-items: center;
  height: 44px;
  padding: 0 var(--space-3);
  gap: var(--space-3);
  color: var(--text-muted);
  border-left: 2px solid transparent;
  transition: color var(--transition-fast), background-color var(--transition-fast), border-color var(--transition-fast);
  white-space: nowrap;
  overflow: hidden;
  position: relative;
}
.sidebar-nav-item:hover {
  color: var(--text-primary);
  background-color: var(--bg-surface-container);
}
.sidebar-nav-item.active {
  color: var(--text-primary);
  border-left-color: var(--color-accent-red);
  background-color: var(--bg-surface-container);
}

.sidebar-nav-icon {
  width: 20px;
  height: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  font-size: 20px;
}

.sidebar-nav-text {
  font-family: var(--font-ui);
  font-size: 13px;
  font-weight: 500;
  opacity: 0;
  transition: opacity var(--transition-slow);
}
.sidebar:hover .sidebar-nav-text { opacity: 1; }

/* Mobile menu button */
.mobile-menu-btn {
  display: none;
  width: 32px;
  height: 32px;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
}

/* ---- Main Content Area ---- */
.app-main {
  flex: 1;
  margin-left: var(--sidebar-width-collapsed);
  margin-top: var(--topbar-height);
  margin-bottom: var(--footer-height);
  overflow-y: auto;
  padding: var(--space-4);
  transition: margin-left var(--transition-slow);
}

/* ---- Footer ---- */
.footer {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: var(--z-fixed);
  height: var(--footer-height);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 var(--space-4);
  background-color: var(--bg-surface-container-low);
  border-top: 1px solid var(--color-border);
  font-family: var(--font-data);
  font-size: 10px;
  letter-spacing: 0.04em;
  color: var(--text-muted);
}

.footer-info { display: flex; align-items: center; gap: var(--space-3); }
.footer-info-item { color: var(--text-muted); }
.footer-info-item.accent { color: var(--text-primary); }

/* ---- Dashboard Grid ---- */
.dashboard-grid {
  display: grid;
  gap: var(--space-3);
  margin-bottom: var(--space-3);
}
.grid-cols-4  { grid-template-columns: repeat(4, 1fr); }
.grid-cols-3  { grid-template-columns: repeat(3, 1fr); }
.grid-cols-2  { grid-template-columns: repeat(2, 1fr); }
.grid-cols-12 { grid-template-columns: repeat(12, 1fr); }

/* ---- Page Header ---- */
.page-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  margin-bottom: var(--space-4);
  padding-bottom: var(--space-3);
  border-bottom: 1px solid var(--color-border);
}
.page-title {
  font-family: var(--font-ui);
  font-size: 20px;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--text-primary);
}
.page-subtitle {
  font-size: 12px;
  color: var(--text-muted);
  margin-top: 2px;
  font-family: var(--font-data);
}
.page-actions {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

/* ---- Breadcrumb ---- */
.breadcrumb {
  display: flex;
  align-items: center;
  gap: var(--space-1);
  margin-bottom: var(--space-3);
  font-family: var(--font-label-caps);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}
.breadcrumb-item { color: var(--text-muted); }
.breadcrumb-item.active { color: var(--text-primary); }
.breadcrumb-separator { color: var(--color-border-variant); }

/* ---- Map Container ---- */
.map-container {
  width: 100%;
  min-height: 320px;
  background-color: var(--bg-surface-container);
  border: 1px solid var(--color-border);
  position: relative;
}

/* ---- Responsive ---- */
@media (max-width: 1024px) {
  .app-main { padding: var(--space-3); }
  .grid-cols-4 { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  .mobile-menu-btn { display: flex; }
  .sidebar {
    transform: translateX(-100%);
    transition: transform var(--transition-slow);
    width: var(--sidebar-width-expanded);
  }
  .sidebar.mobile-open { transform: translateX(0); }
  .sidebar:hover { width: var(--sidebar-width-expanded); }
  .sidebar-nav-text { opacity: 1; }
  .app-main { margin-left: 0; }
  .grid-cols-4  { grid-template-columns: 1fr 1fr; }
  .grid-cols-3  { grid-template-columns: 1fr; }
  .grid-cols-12 { grid-template-columns: 1fr; }
  .dashboard-grid { gap: var(--space-2); }
}