.app-layout {
  display: flex;
  min-height: 100vh;
}

/* ---- SIDEBAR ---- */

.sidebar {
  width: var(--sidebar-w);
  background: var(--bg-sidebar);
  color: #cbd5e1;
  display: flex;
  flex-direction: column;
  position: fixed;
  top: 0; left: 0; bottom: 0;
  z-index: 100;
  overflow-y: auto;
}

.sidebar-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 16px 20px;
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: 20px;
  color: #fff;
  border-bottom: 1px solid rgba(255,255,255,0.08);
  height: var(--header-h);
}

.sidebar-demo-badge {
  background: linear-gradient(135deg, #f59e0b, #d97706);
  color: #000;
  text-align: center;
  padding: 4px 8px;
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 1px;
  text-transform: uppercase;
}

.sidebar-brand span { color: #60a5fa; }

.sidebar-nav {
  flex: 1;
  padding: 12px 0;
}

.sidebar-section {
  padding: 16px 20px 6px;
  font-size: 10px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: #64748b;
}

.sidebar-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 20px;
  color: #94a3b8;
  cursor: pointer;
  transition: all 0.12s;
  border-left: 3px solid transparent;
  font-size: 13px;
  font-weight: 500;
}

.sidebar-item:hover {
  background: rgba(255,255,255,0.05);
  color: #e2e8f0;
}

.sidebar-item.active {
  background: rgba(37,99,235,0.15);
  color: #60a5fa;
  border-left-color: #3b82f6;
}

.sidebar-item i { width: 18px; text-align: center; font-size: 14px; }

.sidebar-badge {
  margin-left: auto;
  background: var(--danger);
  color: #fff;
  font-size: 10px;
  padding: 2px 6px;
  border-radius: 10px;
  font-weight: 600;
}

.sidebar-footer {
  padding: 12px 20px;
  border-top: 1px solid rgba(255,255,255,0.08);
  font-size: 11px;
  color: #475569;
}

.demo-banner {
  background: linear-gradient(135deg, #f59e0b, #d97706);
  color: #000;
  text-align: center;
  padding: 4px;
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 1px;
  text-transform: uppercase;
}

/* ---- MAIN CONTENT ---- */

.main-content {
  flex: 1;
  margin-left: var(--sidebar-w);
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

.page-header {
  background: var(--card);
  border-bottom: 1px solid var(--border);
  padding: 0 24px;
  height: var(--header-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  position: sticky;
  top: 0;
  z-index: 50;
}

.page-title {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 17px;
}

.page-body {
  flex: 1;
  padding: 0;
}

.page-body > :not(.landing) {
  padding: 20px 24px;
}

@media (max-width: 768px) {
  .page-body > :not(.landing) { padding: 12px; }
}

/* ---- RESPONSIVE ---- */

.app-layout.no-sidebar .sidebar { display: none; }
.app-layout.no-sidebar .main-content { margin-left: 0; }

.mobile-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--text);
  font-size: 20px;
  cursor: pointer;
  padding: 4px;
}

.sidebar-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.4);
  z-index: 99;
}

@media (max-width: 768px) {
  .sidebar {
    transform: translateX(-100%);
    transition: transform 0.2s;
  }
  .sidebar.open { transform: translateX(0); }
  .sidebar-overlay.show { display: block; }
  .main-content { margin-left: 0; }
  .mobile-toggle { display: block; }
  .page-header { padding: 0 12px; }

  .page-body > :not(.landing) { padding: 12px; }

  /* bottom nav */
  .bottom-nav {
    display: flex;
    position: fixed;
    bottom: 0; left: 0; right: 0;
    background: var(--card);
    border-top: 1px solid var(--border);
    z-index: 90;
  }
  .bottom-nav-item {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 6px 4px 8px;
    color: var(--text-muted);
    font-size: 10px;
    cursor: pointer;
    border: none;
    background: none;
  }
  .bottom-nav-item.active { color: var(--primary); }
  .bottom-nav-item i { font-size: 18px; margin-bottom: 2px; }
  .page-body { padding-bottom: 70px; }
}