/* App shell — topbar, sidebar, main content, user menu, flash. */

/* ── Shell grid ─────────────────────────────────── */

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

/* ── Topbar ─────────────────────────────────────── */

.topbar {
  grid-area: topbar;
  height: var(--nav-height);
  background-color: rgba(21, 16, 10, 0.78);
  background-image: var(--starfield-bg);
  background-size: var(--starfield-size);
  backdrop-filter: saturate(140%) blur(12px);
  -webkit-backdrop-filter: saturate(140%) blur(12px);
  border-bottom: 1px solid var(--border-subtle);
  display: flex;
  align-items: center;
  padding: 0 var(--space-4);
  position: sticky;
  top: 0;
  z-index: var(--z-sticky);
  gap: var(--space-3);
}

.topbar__logo {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 700;
  color: var(--color-amber);
  text-decoration: none;
  letter-spacing: var(--tracking-display);
  flex-shrink: 0;
  transition: color var(--transition-fast);
}
.topbar__logo:hover { color: var(--color-sunflower); }

.topbar__admin-badge {
  font-size: var(--text-xs);
  font-family: var(--font-display);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: var(--tracking-wider);
  color: #e05555;
  background-color: rgba(200, 60, 60, 0.12);
  border: 1px solid rgba(200, 60, 60, 0.50);
  border-radius: 2px;
  padding: 2px 10px;
  flex-shrink: 0;
  line-height: 1.4;
}

.admin-context .topbar {
  border-bottom-width: 2px;
  border-bottom-color: var(--color-admin-accent);
}

.topbar__breadcrumb {
  flex: 1;
  display: none;
  font-size: var(--text-sm);
  color: var(--color-ash);
  align-items: center;
  gap: var(--space-2);
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.topbar__breadcrumb a {
  color: var(--color-ash);
  transition: color var(--transition-fast);
}
.topbar__breadcrumb a:hover { color: var(--color-parchment); }
.topbar__breadcrumb-sep { color: rgba(122, 110, 95, 0.4); margin: 0 var(--space-1); }
.topbar__breadcrumb-current {
  color: var(--color-parchment);
  font-weight: 500;
}

.topbar__actions {
  display: flex;
  align-items: center;
  gap: var(--space-1);
  margin-left: auto;
}

.topbar__icon-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  border-radius: var(--radius-md);
  color: var(--color-ash);
  transition: color var(--transition-fast), background-color var(--transition-fast);
}
.topbar__icon-btn:hover {
  color: var(--color-parchment);
  background-color: var(--color-white-05);
}

.topbar__avatar-btn {
  background: none;
  border: none;
  cursor: pointer;
  padding: 2px;
  border-radius: 50%;
  display: flex;
  transition: box-shadow var(--transition-fast);
}
.topbar__avatar-btn:hover { box-shadow: 0 0 0 2px var(--border-amber); }

.topbar__hamburger {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 4px;
  width: 36px;
  height: 36px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
  flex-shrink: 0;
  border-radius: var(--radius-md);
  transition: background-color var(--transition-fast);
}
.topbar__hamburger:hover { background-color: var(--color-white-05); }

.topbar__hamburger-line {
  display: block;
  height: 1.5px;
  background-color: var(--color-parchment);
  border-radius: 1px;
  transition: background-color var(--transition-fast);
}

/* ── Sidebar ────────────────────────────────────── */

.sidebar-overlay {
  display: none;
  position: fixed;
  inset: 0;
  z-index: var(--z-overlay);
  background-color: rgba(0, 0, 0, 0.6);
  backdrop-filter: blur(2px);
}

.sidebar {
  grid-area: sidebar;
  background-color: var(--surface-0);
  border-right: 1px solid var(--border-subtle);
  display: flex;
  flex-direction: column;
  position: sticky;
  top: var(--nav-height);
  height: calc(100vh - var(--nav-height));
  overflow-y: auto;
}

.sidebar__nav {
  flex: 1;
  padding: var(--space-3) var(--space-2);
  display: flex;
  flex-direction: column;
  gap: 1px;
}

.sidebar__section-label {
  font-size: 11px;
  color: var(--color-ash);
  text-transform: uppercase;
  letter-spacing: var(--tracking-wider);
  padding: var(--space-4) var(--space-3) var(--space-1);
  font-weight: 600;
}

.sidebar__section-label--mt { margin-top: var(--space-3); }

/* Nav item base — Linear-style, denser */
.sidebar__item {
  position: relative;
  display: flex;
  align-items: center;
  gap: var(--space-3);
  width: 100%;
  height: 32px;
  padding: 0 var(--space-3);
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-ash);
  text-decoration: none;
  background: none;
  border: none;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition:
    background-color var(--transition-fast),
    color var(--transition-fast);
  text-align: left;
}

.sidebar__item:hover {
  background-color: var(--color-white-05);
  color: var(--color-parchment);
}

/* Active item — soft surface fill, amber text, no left bar (cleaner) */
.sidebar__item--active {
  color: var(--color-amber) !important;
  background-color: var(--color-amber-10);
}

.sidebar__item--active::before {
  content: '';
  position: absolute;
  left: 0;
  top: 6px;
  bottom: 6px;
  width: 2px;
  background-color: var(--color-amber);
  border-radius: var(--radius-full);
}

.sidebar__item--amber { color: var(--color-amber); }

.sidebar__item--parent {
  justify-content: flex-start;
}

.sidebar__item--child {
  height: 30px;
  padding-left: calc(var(--space-3) + var(--space-6));
  font-size: var(--text-sm);
  color: var(--color-ash);
}
.sidebar__item--child.sidebar__item--active::before { left: var(--space-6); }

.sidebar__icon { color: currentColor; flex-shrink: 0; opacity: 0.9; }
.sidebar__icon--sm { opacity: 0.65; }

.sidebar__chevron {
  margin-left: auto;
  transition: transform var(--transition-base);
  opacity: 0.6;
}

.sidebar__item--parent[aria-expanded="true"] .sidebar__chevron {
  transform: rotate(180deg);
}

/* Worlds children — collapsed by default, expanded by JS */
.sidebar__worlds-children {
  display: flex;
  flex-direction: column;
  gap: 1px;
  overflow: hidden;
  max-height: 0;
  transition: max-height var(--transition-slow);
}

.sidebar__worlds-children.is-open {
  max-height: 140px;
}

/* Server status widget */
.sidebar__server-widget {
  padding: var(--space-3) var(--space-2) var(--space-4);
  border-top: 1px solid var(--border-subtle);
  margin-top: auto;
}

.sidebar__server-row {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-1) var(--space-3);
  height: 26px;
  font-size: var(--text-xs);
}

.sidebar__server-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  flex-shrink: 0;
}

.sidebar__server-dot--online {
  background-color: #4ade80;
  box-shadow: 0 0 6px rgba(74, 222, 128, 0.5);
}
.sidebar__server-dot--offline { background-color: var(--color-ember); }
.sidebar__server-dot--unknown { background-color: var(--color-ash); opacity: 0.6; }

.sidebar__server-name {
  font-size: var(--text-xs);
  color: var(--color-ash);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* ── Main content ───────────────────────────────── */

.main-content {
  grid-area: main;
  background-color: var(--surface-0);
  min-width: 0;
  position: relative;
}

.page-content {
  max-width: var(--max-content-width);
  margin: 0 auto;
  padding: var(--space-8) var(--space-6);
}

/* Narrow variant for forms and prose */
.page-content--narrow {
  max-width: var(--max-prose-width);
}

/* Page header pattern */
.page-header {
  margin-bottom: var(--space-8);
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: var(--space-4);
  flex-wrap: wrap;
}

.page-header__main { min-width: 0; flex: 1; }

.page-title {
  font-family: var(--font-display);
  font-size: var(--text-3xl);
  color: var(--color-parchment);
  line-height: var(--leading-tight);
  letter-spacing: -0.01em;
}

.page-subtitle {
  font-size: var(--text-sm);
  color: var(--color-ash);
  margin-top: var(--space-2);
  line-height: var(--leading-snug);
}

.page-header__actions {
  display: flex;
  gap: var(--space-2);
  flex-wrap: wrap;
}

/* ── User menu dropdown ─────────────────────────── */

.user-menu {
  position: relative;
}

.user-menu__dropdown {
  display: none;
  position: absolute;
  top: calc(100% + var(--space-2));
  right: 0;
  min-width: 220px;
  background-color: var(--surface-2);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-lg);
  padding: var(--space-1);
  box-shadow: var(--shadow-pop);
  z-index: var(--z-dropdown);
  animation: fade-up var(--transition-fast) both;
}

.user-menu__dropdown.is-open { display: block; }

.user-menu__username {
  padding: var(--space-2) var(--space-3);
  font-size: var(--text-sm);
  color: var(--color-parchment);
  font-weight: 600;
}

.user-menu__role {
  display: block;
  padding: 0 var(--space-3) var(--space-2);
  font-size: var(--text-xs);
  color: var(--color-amber);
  text-transform: uppercase;
  letter-spacing: var(--tracking-wide);
  font-weight: 600;
}

.user-menu__divider {
  height: 1px;
  background-color: var(--border-subtle);
  margin: var(--space-1) 0;
}

.user-menu__item {
  display: flex;
  align-items: center;
  padding: var(--space-2) var(--space-3);
  font-size: var(--text-sm);
  color: var(--color-parchment);
  text-decoration: none;
  border-radius: var(--radius-sm);
  transition: color var(--transition-fast), background-color var(--transition-fast);
  min-height: 32px;
  line-height: 1.4;
}

.user-menu__item:hover {
  color: var(--color-amber);
  background-color: var(--color-amber-10);
}

.user-menu__item--amber { color: var(--color-amber); }

.user-menu__item--btn {
  width: 100%;
  background: none;
  border: none;
  cursor: pointer;
  text-align: left;
  font-family: var(--font-body);
}

/* ── Flash (toast variant in shell) ─────────────── */

.flash-container {
  position: fixed;
  top: calc(var(--nav-height) + var(--space-4));
  right: var(--space-4);
  z-index: var(--z-toast);
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  pointer-events: none;
}

.flash-container > * {
  pointer-events: auto;
  animation: fade-up var(--transition-base) both;
}

.flash {
  position: relative;
  padding: var(--space-3) var(--space-4);
  padding-right: calc(var(--space-4) + 28px);
  border-radius: var(--radius-md);
  font-size: var(--text-sm);
  max-width: 360px;
  background-color: var(--surface-2);
  border: 1px solid var(--border-strong);
  border-left-width: 3px;
  box-shadow: var(--shadow-card);
}

.flash--notice { border-left-color: var(--color-vine); color: #c5e1b8; }
.flash--alert  { border-left-color: var(--color-ember); color: #f0a98a; }

.flash__dismiss {
  position: absolute;
  top: 0;
  right: 0;
  min-width: 20px;
  min-height: 20px;
  padding: 8px;
  background: none;
  border: none;
  cursor: pointer;
  color: var(--color-ash, #9ca3af);
  line-height: 1;
  font-size: 16px;
}

.flash__dismiss:hover { color: var(--color-parchment, #f5f0e8); }

/* ── Mobile ─────────────────────────────────────── */

@media (max-width: 767px) {
  .app-shell {
    grid-template-columns: 1fr;
    grid-template-areas:
      "topbar"
      "main";
  }

  .sidebar {
    position: fixed;
    top: 0;
    left: 0;
    bottom: 0;
    width: 280px;
    height: 100vh;
    z-index: var(--z-drawer);
    transform: translateX(-100%);
    transition: transform var(--transition-base);
    box-shadow: var(--shadow-pop);
  }

  .sidebar.is-open {
    transform: translateX(0);
  }

  .sidebar-overlay.is-open {
    display: block;
  }

  .page-content {
    padding: var(--space-6) var(--space-4);
  }

  .topbar__breadcrumb { display: none; }
  .page-header { flex-direction: column; }
}

@media (min-width: 768px) {
  .topbar__hamburger { display: none; }
  .topbar__breadcrumb { display: flex; }
}