/* ─── RedLineCAD v2 — Layout System ──────────────────────────────
   App shell, sidebar, topbar, split-panel, and page structure.
   ────────────────────────────────────────────────────────────────── */

/* ─── App Shell ──────────────────────────────────────────────────── */
#app {
  display: flex;
  height: 100vh;
  width: 100vw;
  overflow: hidden;
  background: var(--bg-base);
}
.app-shell {
  display: flex;
  height: 100vh;
  width: 100vw;
  overflow: hidden;
  background: var(--bg-base);
}
.main-content {
  flex: 1;
  min-width: 0;
  height: 100vh;
  overflow-y: auto;
  background: var(--bg-base);
}
.sidebar-logout-btn {
  display: flex;
  align-items: center;
  gap: 5px;
  background: none;
  border: 1px solid var(--border);
  color: var(--text-muted);
  cursor: pointer;
  font-size: 0.6875rem;
  font-weight: 600;
  letter-spacing: 0.5px;
  text-transform: uppercase;
  padding: 5px 9px;
  border-radius: var(--radius-sm);
  transition: color var(--transition-fast), border-color var(--transition-fast), background var(--transition-fast);
  flex-shrink: 0;
  white-space: nowrap;
  font-family: var(--font-sans);
}
.sidebar-logout-btn:hover {
  color: var(--rlc-red);
  border-color: var(--rlc-red);
  background: rgba(204,0,0,0.08);
}
.sidebar-logout-label { display: inline; }
.sidebar.collapsed .sidebar-logout-label { display: none; }

/* ─── Sidebar ────────────────────────────────────────────────────── */
.sidebar {
  width: 220px;
  min-width: 220px;
  height: 100%;
  background: var(--bg-surface);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  z-index: var(--z-base);
  transition: width var(--transition-normal);
}

.sidebar.collapsed { width: 56px; min-width: 56px; }

.sidebar-logo {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-4) var(--space-4);
  border-bottom: 1px solid var(--border);
  min-height: 56px;
}

.sidebar-logo-mark {
  font-size: 1.1rem;
  font-weight: 900;
  letter-spacing: 2px;
  color: var(--text-primary);
  white-space: nowrap;
}

.sidebar-logo-mark span { color: var(--rlc-red); }

.sidebar-server {
  padding: var(--space-2) var(--space-4);
  font-size: 0.6875rem;
  font-weight: 600;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  color: var(--text-muted);
  border-bottom: 1px solid var(--border);
}

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

.sidebar-section {
  padding: var(--space-3) var(--space-4) var(--space-1);
  font-size: 0.625rem;
  font-weight: 700;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--text-muted);
}

.nav-item {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-2) var(--space-4);
  cursor: pointer;
  border-radius: 0;
  color: var(--text-secondary);
  font-size: 0.8125rem;
  font-weight: 500;
  transition: background var(--transition-fast), color var(--transition-fast);
  white-space: nowrap;
  overflow: hidden;
  border-left: 2px solid transparent;
  user-select: none;
}

.nav-item:hover {
  background: var(--bg-hover);
  color: var(--text-primary);
}

.nav-item.active {
  background: var(--bg-active);
  color: var(--text-primary);
  border-left-color: var(--rlc-red);
}

.nav-item .nav-icon {
  width: 16px;
  min-width: 16px;
  text-align: center;
  font-size: 0.875rem;
  opacity: 0.7;
}

.nav-item.active .nav-icon { opacity: 1; }

.nav-item .nav-badge {
  margin-left: auto;
  background: var(--rlc-red);
  color: #fff;
  font-size: 0.625rem;
  font-weight: 700;
  padding: 1px 5px;
  border-radius: 10px;
  min-width: 16px;
  text-align: center;
}

/* Department-colored active states */
.nav-item.active.dept-leo   { border-left-color: var(--dept-leo);      background: rgba(26,111,255,0.1); }
.nav-item.active.dept-ems   { border-left-color: var(--dept-ems);      background: rgba(0,204,102,0.1); }
.nav-item.active.dept-fire  { border-left-color: var(--dept-fire);     background: rgba(255,102,0,0.1); }
.nav-item.active.dept-dispatch { border-left-color: var(--dept-dispatch); background: rgba(155,89,182,0.1); }
.nav-item.active.dept-swat  { border-left-color: var(--dept-swat);     background: rgba(44,62,80,0.3); }
.nav-item.active.dept-civilian { border-left-color: var(--dept-civilian); background: rgba(22,160,133,0.1); }

/* ─── Sidebar Footer ─────────────────────────────────────────────── */
.sidebar-footer {
  padding: var(--space-3) var(--space-4);
  border-top: 1px solid var(--border);
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.user-chip {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  flex: 1;
  min-width: 0;
}

.user-avatar {
  width: 28px;
  height: 28px;
  min-width: 28px;
  border-radius: 50%;
  background: var(--bg-elevated);
  border: 1px solid var(--border-strong);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.6875rem;
  font-weight: 700;
  color: var(--text-primary);
  text-transform: uppercase;
}

.user-info { min-width: 0; }
.user-name {
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--text-primary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.user-role {
  font-size: 0.6875rem;
  color: var(--text-muted);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* ─── Main Content Area ──────────────────────────────────────────── */
.main-area {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

/* ─── Topbar ─────────────────────────────────────────────────────── */
.topbar {
  height: 48px;
  min-height: 48px;
  background: var(--bg-surface);
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  gap: var(--space-4);
  padding: 0 var(--space-5);
  z-index: var(--z-base);
}

.topbar-title {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text-primary);
  letter-spacing: 0.02em;
}

.topbar-spacer { flex: 1; }

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

/* ─── Page Content ───────────────────────────────────────────────── */
.page-content {
  flex: 1;
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

/* ─── Page Header Bar ────────────────────────────────────────────── */
.page-header-bar {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  padding: var(--space-4) var(--space-6);
  border-bottom: 1px solid var(--border);
  background: var(--bg-surface);
  min-height: 56px;
  flex-shrink: 0;
}

.page-eyebrow {
  font-size: 0.625rem;
  font-weight: 700;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--rlc-red);
  margin-bottom: 2px;
}

.page-title-sm {
  font-size: 1rem;
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: -0.01em;
}

.page-header-actions {
  margin-left: auto;
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

/* ─── Split Panel Layout ─────────────────────────────────────────── */
.split-layout {
  display: grid;
  grid-template-columns: 380px 1fr;
  height: 100%;
  overflow: hidden;
}

.split-layout.wide-left  { grid-template-columns: 480px 1fr; }
.split-layout.narrow-left { grid-template-columns: 300px 1fr; }

.split-left {
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  background: var(--bg-surface);
}

.split-right {
  display: flex;
  flex-direction: column;
  overflow: hidden;
  background: var(--bg-base);
}

/* ─── Panel Header ───────────────────────────────────────────────── */
.panel-header {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-4);
  border-bottom: 1px solid var(--border);
  background: var(--bg-elevated);
  flex-shrink: 0;
}

.panel-title {
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 1px;
  text-transform: uppercase;
  color: var(--text-secondary);
}

.panel-count {
  font-size: 0.6875rem;
  color: var(--text-muted);
  background: var(--bg-overlay);
  padding: 1px 6px;
  border-radius: 10px;
}

.panel-actions { margin-left: auto; display: flex; gap: var(--space-2); }

/* ─── Empty State ────────────────────────────────────────────────── */
.empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  height: 100%;
  gap: var(--space-3);
  color: var(--text-muted);
  text-align: center;
  padding: var(--space-8);
}

.empty-state-icon {
  font-size: 2.5rem;
  opacity: 0.3;
}

.empty-state-title {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text-secondary);
}

.empty-state-desc {
  font-size: 0.8125rem;
  color: var(--text-muted);
  max-width: 280px;
}

/* ─── Scrollable containers ──────────────────────────────────────── */
.scroll-y {
  overflow-y: auto;
  overflow-x: hidden;
  flex: 1;
}

/* ─── Search bar ─────────────────────────────────────────────────── */
.search-wrap {
  padding: var(--space-3) var(--space-4);
  border-bottom: 1px solid var(--border);
  background: var(--bg-surface);
  flex-shrink: 0;
}

.search-input {
  width: 100%;
  background: var(--bg-base);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: var(--space-2) var(--space-3);
  color: var(--text-primary);
  font-size: 0.8125rem;
  font-family: var(--font-sans);
  transition: border-color var(--transition-fast);
}

.search-input:focus {
  outline: none;
  border-color: var(--border-accent);
}

.search-input::placeholder { color: var(--text-muted); }