/* Grid Shell — sidebar, topbar, content area */

body {
  font-family: var(--font-family);
  color: var(--text-primary);
  background: var(--content-bg);
}

/* ---- Development Banner ---- */
.dev-banner {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 200;
  background: var(--warning-bg);
  color: var(--warning-text);
  text-align: center;
  font-size: var(--font-size-xs);
  font-weight: 700;
  letter-spacing: 0.1em;
  padding: 4px 0;
}

.dev-banner ~ .app {
  margin-top: 24px;
}

.dev-banner ~ .app .sidebar {
  top: 24px;
}

.dev-banner ~ .app .topbar {
  top: 24px;
}

.app {
  display: grid;
  grid-template-columns: var(--sidebar-width) 1fr;
  grid-template-rows: var(--topbar-height) 1fr;
  grid-template-areas:
    'sidebar topbar'
    'sidebar content';
  min-height: 100vh;
}

/* ---- Sidebar ---- */
.sidebar {
  grid-area: sidebar;
  background: var(--sidebar-bg);
  display: flex;
  flex-direction: column;
  position: fixed;
  top: 0;
  left: 0;
  bottom: 0;
  width: var(--sidebar-width);
  z-index: 100;
  overflow-y: auto;
}

.sidebar__header {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  padding: var(--space-lg) var(--space-lg);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.sidebar__logo {
  width: 36px;
  height: 36px;
  background: var(--primary-light);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.sidebar__logo svg {
  width: 20px;
  height: 20px;
  color: #fff;
}

.sidebar__brand {
  font-size: var(--font-size-lg);
  font-weight: 700;
  color: #fff;
}

.sidebar__nav {
  flex: 1;
  padding: var(--space-md) var(--space-sm);
}

.sidebar__section-label {
  font-size: var(--font-size-xs);
  font-weight: 600;
  color: var(--sidebar-text);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: var(--space-md) var(--space-md) var(--space-sm);
}

.sidebar__link {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  padding: var(--space-sm) var(--space-md);
  border-radius: var(--radius-md);
  color: var(--sidebar-text);
  font-size: var(--font-size-sm);
  font-weight: 500;
  transition:
    background var(--transition-fast),
    color var(--transition-fast);
}

.sidebar__link:hover {
  background: rgba(255, 255, 255, 0.06);
  color: var(--sidebar-text-hover);
}

.sidebar__link--active {
  background: var(--sidebar-active-bg);
  color: var(--sidebar-text-hover);
}

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

.sidebar__link-icon svg {
  width: 20px;
  height: 20px;
}

.sidebar__footer {
  padding: var(--space-lg);
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  display: flex;
  align-items: center;
  gap: var(--space-md);
}

.sidebar__avatar {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: var(--font-size-sm);
  font-weight: 600;
  flex-shrink: 0;
}

.sidebar__user-info {
  flex: 1;
  min-width: 0;
  overflow: hidden;
}

.sidebar__user-name {
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: #fff;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.sidebar__user-role {
  font-size: var(--font-size-xs);
  color: var(--sidebar-text);
}

.sidebar__edit-icon {
  margin-left: auto;
  color: var(--sidebar-text);
  opacity: 0.5;
  transition: opacity var(--transition-fast);
}

.sidebar__edit-icon svg {
  width: 16px;
  height: 16px;
}

.sidebar__footer:hover .sidebar__edit-icon {
  opacity: 1;
}

/* ---- Topbar ---- */
.topbar {
  grid-area: topbar;
  background: var(--topbar-bg);
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 var(--space-xl);
  position: sticky;
  top: 0;
  z-index: 50;
  height: var(--topbar-height);
}

.topbar__left {
  display: flex;
  align-items: center;
  gap: var(--space-md);
}

.topbar__hamburger {
  display: none;
  width: 40px;
  height: 40px;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-md);
  color: var(--text-primary);
}

.topbar__hamburger:hover {
  background: var(--content-bg);
}

.topbar__hamburger svg {
  width: 24px;
  height: 24px;
}

.topbar__title {
  font-size: var(--font-size-xl);
  font-weight: 700;
}

.topbar__right {
  display: flex;
  align-items: center;
  gap: var(--space-md);
}

.topbar__avatar {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: var(--font-size-sm);
  font-weight: 600;
}

/* ---- Content ---- */
.content {
  grid-area: content;
  padding: var(--space-xl);
  overflow-y: auto;
}

.content__page {
  display: none;
}

.content__page--active {
  display: block;
}

/* ---- App Loader ---- */
.app-loader {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--space-md);
  padding: var(--space-2xl);
  min-height: 200px;
}

.app-loader__spinner {
  width: 36px;
  height: 36px;
  border: 3px solid var(--border-color);
  border-top-color: var(--primary);
  border-radius: 50%;
  animation: app-loader-spin 0.8s linear infinite;
}

.app-loader__text {
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
}

.app-loader--hidden {
  display: none;
}

@keyframes app-loader-spin {
  to {
    transform: rotate(360deg);
  }
}

/* ---- Sidebar overlay (mobile) ---- */
.sidebar-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: var(--overlay-bg);
  z-index: 90;
}

.sidebar-overlay--visible {
  display: block;
}