:root {
  --sidebar-width: 240px;
  --bg-sidebar: #f7f7f5;
  --border-subtle: #e5e7eb;
  --accent: #2563eb;
  --text-main: #111827;
  --text-muted: #6b7280;
}

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

/* Sidebar */
.sidebar {
  width: var(--sidebar-width);
  background: var(--bg-sidebar);
  border-right: 1px solid var(--border-subtle);
  padding: 1.5rem 1rem;
  display: flex;
  flex-direction: column;
  position: fixed;
  height: 100vh;
}

.sidebar-brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 2rem;
  padding: 0 0.5rem;
}

.sidebar-brand .logo-img {
  height: 28px;
  width: auto;
}

.sidebar-nav {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.nav-link {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.625rem 0.75rem;
  text-decoration: none;
  color: var(--text-main);
  font-size: 0.875rem;
  font-weight: 500;
  border-radius: 6px;
  transition: all 0.2s;
}

.nav-link:hover {
  background: rgba(0, 0, 0, 0.05);
}

.nav-link.active {
  background: white;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
  color: var(--accent);
}

/* Content Area */
.main-content {
  flex: 1;
  margin-left: var(--sidebar-width);
  background: white;
  padding: 2rem;
}

/* Shared Components */
.page-header {
  margin-bottom: 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.page-title {
  font-size: 1.5rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}

/* Save/Discard Bar */
#action-bar {
  position: fixed;
  bottom: 0;
  left: var(--sidebar-width);
  right: 0;
  background: var(--text-main);
  color: white;
  padding: 1rem 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  transform: translateY(100%);
  transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  z-index: 1000;
}

#action-bar.visible {
  transform: translateY(0);
}

.action-bar-text {
  font-size: 0.875rem;
  font-weight: 500;
}

.action-bar-btns {
  display: flex;
  gap: 0.75rem;
}

.btn-ghost {
  background: transparent;
  border: 1px solid rgba(255, 255, 255, 0.2);
  color: white;
}

.btn-ghost:hover {
  background: rgba(255, 255, 255, 0.1);
}