/* ============================================================
   Layout: app shell (floating glass sidebar + topbar), page frame,
   responsive rules, and the Overview page's Atrium structure.

   Breakpoints
     >= 1200px  full sidebar (user can collapse to a rail)
     768-1199   icon rail with tooltips (tablet)
     < 768      off-canvas drawer + bottom program bar (mobile)
   ============================================================ */

.app-shell { display: flex; min-height: 100dvh; gap: var(--shell-gap); padding: var(--shell-gap) var(--shell-gap) 0; }

/* ---------------------------------------------------------------- sidebar: floating glass panel */

.sidebar {
  width: var(--sidebar-w);
  flex: none;
  display: flex; flex-direction: column;
  position: sticky; top: var(--shell-gap);
  height: calc(100dvh - var(--shell-gap) * 2);
  z-index: var(--z-sticky);
  border: var(--border-w) solid var(--glass-border);
  border-radius: var(--radius-xl);
  box-shadow: var(--glass-shadow);
  background: var(--glass-tint);
  transition: width var(--duration-slow) var(--ease-in-out);
  overflow: hidden;
}
@supports (backdrop-filter: blur(1px)) or (-webkit-backdrop-filter: blur(1px)) {
  .sidebar {
    backdrop-filter: blur(var(--glass-blur)) saturate(var(--glass-sat));
    -webkit-backdrop-filter: blur(var(--glass-blur)) saturate(var(--glass-sat));
  }
}
@supports not ((backdrop-filter: blur(1px)) or (-webkit-backdrop-filter: blur(1px))) {
  .sidebar { background: var(--bg-panel); }
}
.app-shell.is-collapsed .sidebar { width: var(--sidebar-w-collapsed); }

.sidebar-brand {
  display: flex; align-items: center; gap: var(--space-2-5);
  height: var(--topbar-h); padding: 0 var(--space-5); flex: none;
  font-weight: var(--weight-semibold); font-size: var(--text-md); letter-spacing: var(--tracking-tight);
  color: var(--text); overflow: hidden; white-space: nowrap; text-decoration: none;
}
.sidebar-brand:hover { text-decoration: none; }
.sidebar-brand .icon {
  width: 30px; height: 30px; padding: 6px; border-radius: var(--radius-sm); flex: none;
  color: var(--text-on-accent);
  background: linear-gradient(135deg, var(--accent), var(--accent-solid));
  box-shadow: 0 1px 0 var(--glass-edge-highlight) inset, 0 4px 12px -4px var(--accent-glow);
}
.sidebar-brand .brand-sub { display: block; font-size: var(--text-2xs); font-weight: var(--weight-medium); color: var(--text-faint); letter-spacing: var(--tracking-wide); text-transform: uppercase; margin-top: 1px; }

.sidebar-nav { flex: 1; overflow-y: auto; overflow-x: hidden; padding: var(--space-1) var(--space-3) var(--space-3); scrollbar-width: none; }
.sidebar-nav::-webkit-scrollbar { width: 0; }

.nav-group { margin-top: var(--space-5); display: flex; flex-direction: column; gap: 2px; }
.nav-group:first-child { margin-top: var(--space-1); }
.nav-group-label {
  font-size: var(--text-2xs); font-weight: var(--weight-semibold); letter-spacing: var(--tracking-wider);
  text-transform: uppercase; color: var(--text-faint); padding: 0 var(--space-3) var(--space-1-5);
  white-space: nowrap;
}

.nav-item {
  position: relative;
  display: flex; align-items: center; gap: var(--space-3);
  height: 40px; padding: 0 var(--space-3); border-radius: var(--radius-md);
  color: var(--text-dim); font-size: var(--text-sm); font-weight: var(--weight-medium);
  text-decoration: none; white-space: nowrap; overflow: hidden;
  transition: background-color var(--duration-fast) var(--ease-out), color var(--duration-fast) var(--ease-out),
              box-shadow var(--duration-base) var(--ease-out), transform var(--duration-fast) var(--ease-out);
}
.nav-item .label, .sidebar-brand .label { display: inline; color: inherit; font-size: inherit; font-weight: inherit; margin: 0; }
.sidebar-brand .label { display: block; }
.nav-item .icon { flex: none; transition: transform var(--duration-base) var(--ease-spring); }
.nav-item:hover { background: var(--bg-hover); color: var(--text); text-decoration: none; }
.nav-item:hover .icon { transform: scale(1.08); }
.nav-item:active { transform: scale(var(--press-scale)); }
.nav-item:focus-visible { outline: var(--border-w-thick) solid var(--accent-ring); outline-offset: -2px; }

/* Active item: the mockup's filled gradient pill with a soft accent
   glow beneath. */
.nav-item.active {
  color: var(--nav-active-text);
  background: linear-gradient(135deg, var(--accent-solid-hover), var(--nav-active-bg));
  font-weight: var(--weight-semibold);
  box-shadow: 0 1px 0 var(--glass-edge-highlight) inset, 0 6px 16px -6px var(--accent-glow);
}
.nav-item.active:hover { color: var(--nav-active-text); }
.nav-item.active .icon { transform: none; }

.app-shell.is-collapsed .nav-item span.label,
.app-shell.is-collapsed .sidebar-brand span.label,
.app-shell.is-collapsed .nav-group-label { display: none; }
.app-shell.is-collapsed .nav-item { justify-content: center; padding: 0; }
.app-shell.is-collapsed .sidebar-brand { justify-content: center; padding: 0; }
.app-shell.is-collapsed .sidebar-nav { padding-left: var(--space-2-5); padding-right: var(--space-2-5); }
.app-shell.is-collapsed .nav-group { margin-top: var(--space-3); padding-top: var(--space-3); border-top: var(--border-w) solid var(--border); }
.app-shell.is-collapsed .nav-group:first-child { margin-top: var(--space-1); padding-top: 0; border-top: none; }
.app-shell.is-collapsed .nav-item { height: 44px; }

/* rail tooltips: reuse [data-tooltip] but to the side, only collapsed */
.nav-item[data-tooltip]::after { display: none; }
.app-shell.is-collapsed .nav-item[data-tooltip]::after {
  display: block;
  bottom: auto; left: calc(100% + 12px); top: 50%; transform: translateY(-50%) translateX(-4px);
}
.app-shell.is-collapsed .nav-item[data-tooltip]:hover::after,
.app-shell.is-collapsed .nav-item[data-tooltip]:focus-visible::after {
  transform: translateY(-50%) translateX(0);
  transition-delay: 0s;
}
/* The rail's overflow:hidden would clip side tooltips; let them out. */
.app-shell.is-collapsed .sidebar, .app-shell.is-collapsed .sidebar-nav, .app-shell.is-collapsed .nav-item { overflow: visible; }

.sidebar-foot { padding: var(--space-3); flex: none; display: flex; justify-content: flex-end; border-top: var(--border-w) solid var(--border); }
.app-shell.is-collapsed .sidebar-foot { justify-content: center; }
#sidebar-collapse .icon { transition: transform var(--duration-slow) var(--ease-in-out); }
.app-shell.is-collapsed #sidebar-collapse .icon { transform: rotate(180deg); }

/* ---------------------------------------------------------------- topbar: floating glass bar */

.topbar {
  position: sticky; top: var(--shell-gap); z-index: var(--z-sticky);
  display: flex; align-items: center; gap: var(--space-3);
  height: var(--topbar-h); padding: 0 var(--space-3) 0 var(--space-5);
  border: var(--border-w) solid var(--glass-border);
  border-radius: var(--radius-lg);
  background: var(--glass-tint);
  box-shadow: var(--glass-shadow);
}
:root[data-theme="black"] .topbar, :root[data-theme="default"] .topbar { background: color-mix(in srgb, var(--surface) 72%, transparent); }
@supports (backdrop-filter: blur(1px)) or (-webkit-backdrop-filter: blur(1px)) {
  .topbar {
    backdrop-filter: blur(var(--glass-blur)) saturate(var(--glass-sat));
    -webkit-backdrop-filter: blur(var(--glass-blur)) saturate(var(--glass-sat));
  }
}
@supports not ((backdrop-filter: blur(1px)) or (-webkit-backdrop-filter: blur(1px))) {
  .topbar { background: var(--bg-panel); }
}
.topbar-title { display: flex; flex-direction: column; min-width: 0; line-height: var(--leading-tight); }
.topbar-title .crumb { font-size: var(--text-2xs); color: var(--text-faint); text-transform: uppercase; letter-spacing: var(--tracking-wider); font-weight: var(--weight-semibold); }
.topbar-title .title { font-size: var(--text-md); font-weight: var(--weight-semibold); letter-spacing: var(--tracking-tight); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.topbar-status { display: flex; align-items: center; gap: var(--space-2); margin-right: auto; margin-left: var(--space-3); min-width: 0; padding-left: var(--space-3); border-left: var(--border-w) solid var(--border); }
.topbar-status .uptime { font-size: var(--text-xs); color: var(--text-dim); font-family: var(--font-mono); white-space: nowrap; }
.topbar-actions { display: flex; align-items: center; gap: var(--space-1-5); flex: none; }
.topbar-actions .btn-ghost.btn-icon { border-radius: var(--radius-full); }
.topbar-sep { width: var(--border-w); height: 24px; background: var(--border); margin: 0 var(--space-1); }
.sidebar-toggle { display: none; }

/* Account button: the mockup's gradient avatar */
.account-avatar {
  border-radius: 50%;
  background: linear-gradient(135deg, var(--accent), var(--accent-solid));
  color: var(--text-on-accent); border-color: transparent;
  box-shadow: 0 1px 0 var(--glass-edge-highlight) inset, 0 4px 12px -4px var(--accent-glow);
}
.account-avatar:hover { background: linear-gradient(135deg, var(--accent), var(--accent-solid-hover)); color: var(--text-on-accent); transform: translateY(-1px); }
.account-initial { font-size: var(--text-sm); font-weight: var(--weight-semibold); text-transform: uppercase; }

.theme-switch-trigger .icon { transition: transform var(--duration-slow) var(--ease-spring); }
.theme-switch-trigger:hover .icon { transform: rotate(-20deg); }

/* ---------------------------------------------------------------- page content */

.app-main { flex: 1; min-width: 0; display: flex; flex-direction: column; }
main.page {
  max-width: var(--content-max-w); width: 100%; margin: 0 auto;
  padding: var(--space-6) 0 var(--space-16);
}

/* Page header: title + one-line description + optional actions. */
.page-header {
  display: flex; align-items: flex-end; justify-content: space-between; gap: var(--space-4); flex-wrap: wrap;
  margin-bottom: var(--space-6);
}
.page-header h1 { font-size: var(--text-xl); }
.page-header .page-desc { color: var(--text-dim); font-size: var(--text-sm); margin: var(--space-1) 0 0; max-width: var(--measure); }
.page-header .page-actions { display: flex; gap: var(--space-2); flex-wrap: wrap; align-items: center; }

.section { margin-top: var(--space-6); }
.section:first-child { margin-top: 0; }
.section-head { display: flex; align-items: center; justify-content: space-between; gap: var(--space-3); margin-bottom: var(--space-3); flex-wrap: wrap; }
.section-head h2 { font-size: var(--text-md); display: flex; align-items: center; gap: var(--space-2); }
.section-head .hint { margin: 0; }

/* ---------------------------------------------------------------- hero status (legacy .hero) */

.hero {
  display: flex; align-items: center; justify-content: space-between; gap: var(--space-4); flex-wrap: wrap;
  background: var(--glass-tint); border: var(--border-w) solid var(--glass-border); border-radius: var(--radius-xl);
  padding: var(--space-6); margin-bottom: var(--space-6);
  box-shadow: var(--glass-shadow);
}
.hero-state { display: flex; flex-direction: column; gap: var(--space-1); min-width: 0; }
.hero-state .state-text { font-size: var(--text-xl); font-weight: var(--weight-semibold); letter-spacing: var(--tracking-tighter); line-height: var(--leading-tight); transition: color var(--duration-slow) var(--ease-in-out); }
.state-LIVE .state-text { color: var(--text); }
.state-STOPPED .state-text { color: var(--text); }
.state-ERROR .state-text { color: var(--danger); }
.state-STARTING .state-text, .state-RECONNECTING .state-text { color: var(--warning); }
.hero-state .hint { margin: 0; font-size: var(--text-sm); }

/* Small status dot used by older markup (.dot-lg without a ring) */
.dot-LIVE { background: var(--live); animation: pulse-ring 1.8s var(--ease-out) infinite; }
.dot-STOPPED { background: var(--text-faint); }
.dot-ERROR { background: var(--danger); }
.dot-STARTING, .dot-RECONNECTING { background: var(--warning); animation: pulse 1.4s var(--ease-in-out) infinite; }

.restart-rate-badge.is-alarm .dot { animation: pulse 1s var(--ease-in-out) infinite; }
.is-stale { opacity: var(--opacity-stale); transition: opacity var(--duration-slow) var(--ease-out); }

/* ---------------------------------------------------------------- responsive shell */

.mobile-only { display: none; }
.mobile-bar { display: none; }
.sidebar-backdrop { display: none; }

/* Tablet: icon rail, no collapse toggle (there's no room for labels). */
@media (min-width: 768px) and (max-width: 1199px) {
  .app-shell .sidebar { width: var(--sidebar-w-collapsed); overflow: visible; }
  .app-shell .sidebar-nav { overflow: visible; padding-left: var(--space-2-5); padding-right: var(--space-2-5); }
  .app-shell .nav-item span.label, .app-shell .sidebar-brand span.label, .app-shell .nav-group-label { display: none; }
  .app-shell .nav-item { justify-content: center; padding: 0; height: 44px; overflow: visible; }
  .app-shell .sidebar-brand { justify-content: center; padding: 0; }
  .app-shell .nav-group { margin-top: var(--space-3); padding-top: var(--space-3); border-top: var(--border-w) solid var(--border); }
  .app-shell .nav-group:first-child { margin-top: var(--space-1); padding-top: 0; border-top: none; }
  .app-shell .nav-item[data-tooltip]::after {
    display: block; bottom: auto; left: calc(100% + 12px); top: 50%; transform: translateY(-50%) translateX(-4px);
  }
  .app-shell .nav-item[data-tooltip]:hover::after, .app-shell .nav-item[data-tooltip]:focus-visible::after { transform: translateY(-50%) translateX(0); transition-delay: 0s; }
  .sidebar-foot { display: none; }
}

@media (max-width: 1023px) {
  .topbar-status .uptime { display: none; }
}

/* Mobile: drawer + bottom bar. */
@media (max-width: 767px) {
  .app-shell { padding: var(--space-2) var(--space-2) 0; gap: 0; }
  /* Off-canvas drawer: transform-only, its own compositor layer.
     `visibility` flips after the slide-out so it leaves tab order. */
  .sidebar {
    position: fixed; left: var(--space-2); top: var(--space-2); bottom: var(--space-2); height: auto;
    width: min(300px, calc(100vw - var(--space-12)));
    transform: translateX(calc(-100% - var(--space-4)));
    background: var(--glass-tint-strong);
    box-shadow: var(--shadow-lg);
    visibility: hidden;
    z-index: var(--z-drawer);
    transition: transform var(--duration-slow) var(--ease-in), visibility 0s linear var(--duration-slow);
    padding-top: env(safe-area-inset-top, 0px);
    padding-bottom: env(safe-area-inset-bottom, 0px);
  }
  .app-shell.is-drawer-open .sidebar {
    transform: translateX(0); visibility: visible;
    transition: transform var(--duration-slow) var(--ease-out);
  }
  .app-shell.is-collapsed .sidebar { width: min(300px, calc(100vw - var(--space-12))); overflow: hidden; }
  .app-shell.is-collapsed .nav-group-label { display: block; }
  .app-shell.is-collapsed .nav-group { border-top: none; padding-top: 0; margin-top: var(--space-5); }
  .app-shell.is-collapsed .nav-group:first-child { margin-top: var(--space-1); }
  .app-shell.is-collapsed .nav-item span.label,
  .app-shell.is-collapsed .sidebar-brand span.label { display: inline; }
  .app-shell.is-collapsed .nav-item, .app-shell.is-collapsed .sidebar-brand { justify-content: flex-start; padding: 0 var(--space-3); }
  .app-shell.is-collapsed .sidebar-nav { overflow-y: auto; }
  .app-shell.is-collapsed .nav-item[data-tooltip]::after { display: none; }
  .sidebar-foot { display: none; }

  /* touch targets */
  .nav-item { height: 48px; font-size: var(--text-base); }

  /* staggered reveal on open, transform/opacity only */
  .app-shell.is-drawer-open .nav-item { animation: nav-item-in var(--duration-slow) var(--ease-out) backwards; }
  .app-shell.is-drawer-open .nav-group:nth-child(1) .nav-item { animation-delay: 40ms; }
  .app-shell.is-drawer-open .nav-group:nth-child(2) .nav-item { animation-delay: 80ms; }
  .app-shell.is-drawer-open .nav-group:nth-child(3) .nav-item { animation-delay: 120ms; }
  .app-shell.is-drawer-open .nav-group:nth-child(4) .nav-item { animation-delay: 160ms; }
  @keyframes nav-item-in { from { opacity: 0; transform: translateX(-10px); } to { opacity: 1; transform: none; } }

  .sidebar-backdrop {
    display: block; position: fixed; inset: 0; background: var(--scrim);
    z-index: calc(var(--z-drawer) - 1); opacity: 0; pointer-events: none;
    transition: opacity var(--duration-slow) var(--ease-out);
  }
  .app-shell.is-drawer-open .sidebar-backdrop { opacity: 1; pointer-events: auto; }

  .sidebar-toggle { display: inline-flex; }
  .topbar { top: var(--space-2); padding: 0 var(--space-2); gap: var(--space-1-5); border-radius: var(--radius-lg); }
  .topbar-title .crumb { display: none; }
  .topbar-status { margin-left: var(--space-1); padding-left: var(--space-2); }
  .topbar-actions #topbar-go-live, .topbar-actions #topbar-stop, .topbar-actions #topbar-desktop, .topbar-sep { display: none; }
  main.page { padding: var(--space-4) var(--space-1) calc(var(--mobile-bar-h) + var(--space-8)); }

  .mobile-bar {
    display: flex; gap: var(--space-2); align-items: center;
    position: fixed; left: var(--space-2); right: var(--space-2); bottom: calc(var(--space-2) + env(safe-area-inset-bottom, 0px)); z-index: var(--z-sticky);
    padding: var(--space-2);
    background: var(--glass-tint-strong);
    border: var(--border-w) solid var(--glass-border); border-radius: var(--radius-xl);
    box-shadow: var(--shadow-lg);
  }
  @supports (backdrop-filter: blur(1px)) or (-webkit-backdrop-filter: blur(1px)) {
    .mobile-bar { backdrop-filter: blur(var(--glass-blur)) saturate(var(--glass-sat)); -webkit-backdrop-filter: blur(var(--glass-blur)) saturate(var(--glass-sat)); }
  }
  .mobile-bar .btn { flex: 1; height: var(--control-h-touch); font-size: var(--text-base); }
  .mobile-bar .btn-icon { flex: 0 0 var(--control-h-touch); width: var(--control-h-touch); }
  #toasts { bottom: calc(var(--mobile-bar-h) + var(--space-4) + env(safe-area-inset-bottom, 0px)); right: var(--space-3); }

  .hero { flex-direction: column; align-items: stretch; }
  .hero .btn-row { width: 100%; }
  .form-grid, .grid { grid-template-columns: 1fr; }
  .service-row { flex-wrap: wrap; }
  .service-row .service-meta { margin-left: 0; order: 3; width: 100%; }
  .page-header { margin-bottom: var(--space-4); }
}

@media (min-width: 1440px) {
  main.page { padding-left: var(--space-2); padding-right: var(--space-2); }
}

@media (prefers-reduced-motion: reduce) {
  .sidebar, .nav-item, .sidebar-backdrop { transition: none !important; }
  .nav-item, .app-shell.is-drawer-open .nav-item { animation: none !important; opacity: 1 !important; }
}

/* ---------------------------------------------------------------- remote-desktop overlay */

.vnc-overlay {
  position: fixed; inset: 0; z-index: var(--z-modal); background: var(--canvas-black); display: flex; flex-direction: column;
  animation: fade-in var(--duration-base) var(--ease-out);
}
.vnc-overlay[hidden] { display: none; }
.vnc-overlay-bar {
  display: flex; align-items: center; gap: var(--space-3);
  padding: var(--space-2) var(--space-2) var(--space-2) var(--space-4);
  background: var(--glass-tint-strong); border-bottom: var(--border-w) solid var(--glass-border);
  padding-top: calc(var(--space-2) + env(safe-area-inset-top, 0px));
}
.vnc-overlay-title { display: inline-flex; align-items: center; gap: var(--space-2); font-weight: var(--weight-semibold); flex: 1; min-width: 0; }
.vnc-overlay-screen { flex: 1; min-height: 0; }
.vnc-overlay-screen > * { width: 100%; height: 100%; }

/* ---------------------------------------------------------------- page containers */
.dash-container, .main-container, .overlay-container, .studio-container,
.config-container, .remote-grid {
  max-width: var(--content-max-w); width: 100%; margin: 0 auto; box-sizing: border-box;
}

/* ================================================================
   OVERVIEW - Atrium
   ================================================================ */
.dash-grid { display: flex; flex-direction: column; gap: var(--space-5); width: 100%; }
.grid-col-full, .dash-services-wrap { width: 100%; }

/* hero: glass card, radial live glow, ring + meta left, preview right */
.atrium-hero {
  display: grid; grid-template-columns: minmax(0, 1.3fr) minmax(0, 1fr); gap: var(--space-6);
  padding: var(--space-6); border-radius: var(--radius-2xl);
  position: relative; overflow: hidden; isolation: isolate;
}
.atrium-hero::after {
  content: ""; position: absolute; top: -45%; right: -12%; width: 62%; height: 170%; z-index: -1;
  background: radial-gradient(closest-side, var(--live-tint), transparent); pointer-events: none;
  opacity: 0; transition: opacity var(--duration-slower) var(--ease-in-out);
}
.atrium-hero.state-LIVE::after { opacity: 1; }
.atrium-hero.state-STARTING::after, .atrium-hero.state-RECONNECTING::after {
  opacity: 1; background: radial-gradient(closest-side, var(--warning-tint), transparent);
}
.atrium-hero:hover { transform: none; }

.hero-main { display: flex; gap: var(--space-6); align-items: center; min-width: 0; }
.hero-meta { min-width: 0; flex: 1; display: flex; flex-direction: column; gap: var(--space-4); }
.service-card-3d .service-card-name { max-width: 100%; }
.hero-meta .hero-state .state-text { font-size: var(--text-xl); }

/* Status ring: #hero-dot is the element overview.js re-classes
   (dot-LIVE / dot-STOPPED / ...) - it holds an SVG ring whose colors
   crossfade between states. Live = full ring with a slow breathing
   glow; stopped = calm grey; starting/reconnecting = a partial arc
   that sweeps; failed = red, still. */
.hero-ring { position: relative; width: var(--ring-size); height: var(--ring-size); flex: none; }
.hero-ring .dot-lg { position: absolute; inset: 0; z-index: var(--z-raised); display: block; border-radius: 50%; background: none; animation: none; box-shadow: none; }
.hero-ring svg { width: 100%; height: 100%; display: block; overflow: visible; }
.hero-ring .ring-bg { fill: none; stroke: var(--border); stroke-width: var(--ring-stroke); }
.hero-ring .ring-fg {
  fill: none; stroke: var(--text-faint); stroke-width: var(--ring-stroke); stroke-linecap: round;
  transform: rotate(-90deg); transform-origin: 50% 50%;
  stroke-dasharray: 289; stroke-dashoffset: 0;
  transition: stroke var(--duration-slower) var(--ease-in-out), stroke-dashoffset var(--duration-slower) var(--ease-in-out), opacity var(--duration-slow) var(--ease-out);
}
.hero-ring .ring-glow {
  position: absolute; inset: 6%; border-radius: 50%; pointer-events: none; z-index: 0;
  box-shadow: 0 0 28px 2px var(--live-glow);
  opacity: 0; transition: opacity var(--duration-slower) var(--ease-in-out);
}
.hero-ring .ring-label {
  position: absolute; inset: 0; z-index: var(--z-raised); display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 2px;
  text-align: center;
}
.hero-ring .ring-word {
  font-size: var(--text-xs); font-weight: var(--weight-bold); letter-spacing: var(--tracking-wider);
  color: var(--text-faint); text-transform: uppercase; transition: color var(--duration-slower) var(--ease-in-out);
}
.hero-ring .ring-time { font-family: var(--font-mono); font-size: var(--text-xs); color: var(--text-dim); min-height: 1em; }

.hero-ring .dot-LIVE .ring-fg { stroke: var(--live); }
.hero-ring .dot-LIVE ~ .ring-glow { opacity: 1; animation: breathe var(--duration-pulse) var(--ease-in-out) infinite; }
.hero-ring .dot-LIVE ~ .ring-label .ring-word { color: var(--live); }
.hero-ring .dot-ERROR .ring-fg { stroke: var(--danger); stroke-dashoffset: 0; }
.hero-ring .dot-ERROR ~ .ring-label .ring-word { color: var(--danger); }
.hero-ring .dot-STARTING .ring-fg, .hero-ring .dot-RECONNECTING .ring-fg { stroke: var(--warning); stroke-dashoffset: 200; }
.hero-ring .dot-STARTING svg, .hero-ring .dot-RECONNECTING svg { animation: spin 1.4s linear infinite; }
.hero-ring .dot-STARTING ~ .ring-label .ring-word, .hero-ring .dot-RECONNECTING ~ .ring-label .ring-word { color: var(--warning); }
.hero-ring .dot-STOPPED .ring-fg { stroke: var(--text-faint); opacity: 0.55; }
.hero-ring .skeleton { background: transparent !important; }

.hero-eyebrow { display: flex; align-items: center; gap: var(--space-3); flex-wrap: wrap; margin-bottom: calc(var(--space-2) * -1); }
.hero-chip-row { display: flex; gap: var(--space-2); flex-wrap: wrap; }
.hero-3d-source {
  display: flex; align-items: center; gap: var(--space-2);
  color: var(--text-dim); font-size: var(--text-xs); min-width: 0;
}
.hero-3d-source .src-url { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; color: var(--text-faint); }
.hero-3d-source .copy-url-btn { flex: none; }
.hero-actions { gap: var(--space-2); }

.hero-3d-preview {
  position: relative; border-radius: var(--radius-lg); overflow: hidden; align-self: center;
  aspect-ratio: 16 / 9; background: var(--canvas-black); border: var(--border-w) solid var(--glass-border);
  box-shadow: var(--shadow-md);
  display: flex; align-items: center; justify-content: center;
}
.hero-3d-preview img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; display: block; animation: fade-in var(--duration-slow) var(--ease-out); }
.hero-3d-preview .empty-state { color: var(--text-faint); }
.hero-3d-preview .empty-state > .icon { background: rgba(255, 255, 255, 0.04); border-color: rgba(255, 255, 255, 0.08); }
.preview-tag {
  position: absolute; top: var(--space-3); left: var(--space-3); z-index: var(--z-raised);
  display: inline-flex; align-items: center; gap: var(--space-1-5);
  height: 22px; padding: 0 var(--space-2-5); border-radius: var(--radius-full);
  background: var(--scrim); color: var(--on-media); font-size: var(--text-2xs); font-weight: var(--weight-semibold); letter-spacing: var(--tracking-wider); text-transform: uppercase;
}
.preview-tag .dot { width: var(--dot-sm); height: var(--dot-sm); border-radius: 50%; background: var(--live); }

/* bento tool grid (mockup .b-bento) */
.bento { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: var(--space-4); }
.bento-tile {
  display: flex; flex-direction: column; gap: var(--space-1); min-height: 132px;
  padding: var(--space-5); border-radius: var(--radius-xl); overflow: hidden;
}
.bento-tile.span2 { grid-column: span 2; }
.bento-tile .icon-well { margin-bottom: var(--space-3); transition: transform var(--duration-base) var(--ease-spring); }
.bento-tile:hover .icon-well { transform: scale(1.06) rotate(-3deg); }
.bento-tile h3 { font-size: var(--text-md); margin: 0; }
.bento-tile p { margin: 0; font-size: var(--text-xs); color: var(--text-dim); line-height: var(--leading-normal); }
.bento-tile .tile-arrow {
  position: absolute; top: var(--space-5); right: var(--space-5); color: var(--text-faint);
  transition: transform var(--duration-base) var(--ease-out), color var(--duration-fast) var(--ease-out);
}
.bento-tile:hover .tile-arrow { transform: translate(2px, -2px); color: var(--accent); }
.bento-tile .btn-row { margin-top: auto; padding-top: var(--space-3); }
.bento-tile .tile-meta { display: flex; gap: var(--space-2); flex-wrap: wrap; margin-top: auto; padding-top: var(--space-3); }

/* equal stat tiles (mockup .b-stats) */
.overview-stats-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: var(--space-4); }
.stat-tile-glass {
  display: flex; flex-direction: column; min-width: 0;
  background: var(--bg-panel); border: var(--border-w) solid var(--border); border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm); padding: var(--space-4) var(--space-5);
  transition: box-shadow var(--duration-base) var(--ease-out), border-color var(--duration-base) var(--ease-out), transform var(--duration-base) var(--ease-out);
}
.stat-tile-glass:hover { border-color: var(--border-strong); box-shadow: var(--shadow-md); transform: translateY(-1px); }
.stat-tile-glass.span2 { grid-column: span 2; }
.stat-k { display: flex; align-items: center; justify-content: space-between; gap: var(--space-2); margin-bottom: var(--space-2); font-size: var(--text-xs); color: var(--text-dim); }
.stat-k .eyebrow { color: var(--text-dim); }
.stat-k .stat-aside { font-family: var(--font-mono); font-size: var(--text-2xs); color: var(--text-faint); white-space: nowrap; }
.stat-tile-glass .stat-value { font-size: var(--text-2xl); }
.stat-tile-glass .sparkline { margin-top: auto; padding-top: var(--space-2); }
.stat-tile-glass .cpu-cores { margin-top: var(--space-3); height: 20px; }
.stat-foot { display: flex; align-items: center; gap: var(--space-1-5); font-size: var(--text-xs); color: var(--text-dim); margin-top: var(--space-3); }
.stat-foot .icon { color: var(--text-faint); }
#restart-rate-wide-tile.is-alarm { border-color: var(--danger); box-shadow: 0 0 0 4px var(--danger-tint); }
#restart-rate-wide-tile.is-alarm .stat-value { color: var(--danger); }
.account-line { display: flex; align-items: center; gap: var(--space-2); font-size: var(--text-sm); color: var(--text); min-width: 0; }
.account-line .icon { color: var(--accent); }
.account-line span { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

.health-card-head { display: flex; align-items: center; justify-content: space-between; margin-bottom: var(--space-3); gap: var(--space-2); }
.health-card-head h3 { font-size: var(--text-sm); margin: 0; }
.health-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: var(--space-4); }
.health-grid .stat-value { font-size: var(--text-xl); }
#webpage-health { display: flex; align-items: center; gap: var(--space-1-5); }

/* services */
.service-grid { display: grid; gap: var(--space-3); grid-template-columns: repeat(auto-fill, minmax(200px, 1fr)); }
.service-card-3d {
  padding: var(--space-4); border-radius: var(--radius-lg);
  background: var(--bg-panel); border: var(--border-w) solid var(--border); box-shadow: var(--shadow-xs);
}
.service-card-3d:hover { transform: translateY(-1px); }
.service-card-3d .service-card-head { display: flex; flex-direction: column; align-items: flex-start; gap: var(--space-2); margin-bottom: var(--space-3); }
.service-card-3d .service-card-name { font-weight: var(--weight-medium); font-size: var(--text-sm); font-family: var(--font-mono); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.service-card-3d .service-card-meta { display: flex; gap: var(--space-4); font-size: var(--text-xs); color: var(--text-dim); margin-bottom: var(--space-3); }
.service-card-3d .service-card-meta .tnum { color: var(--text); font-family: var(--font-mono); }
.service-card-3d .service-card-actions { display: flex; gap: var(--space-1); border-top: var(--border-w) solid var(--border); padding-top: var(--space-2); margin: 0 calc(var(--space-1) * -1); }

/* Quick-nav grid (used by Studio / Overlay) */
.quick-nav-grid {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: var(--space-4); width: 100%;
}
.quick-nav-grid .glass-row {
  flex-direction: column; align-items: flex-start; gap: var(--space-3);
  padding: var(--space-5); border-bottom: none; border-radius: var(--radius-xl);
  border: var(--border-w) solid var(--glass-border); background: var(--glass-tint); box-shadow: var(--glass-shadow);
  position: relative; overflow: hidden;
  transition: transform var(--duration-base) var(--ease-out), box-shadow var(--duration-base) var(--ease-out);
}
.quick-nav-grid .glass-row:hover { transform: translateY(var(--lift-y)); box-shadow: var(--glass-shadow-hover); }
.quick-nav-grid .glass-row-icon {
  width: 36px; height: 36px; border-radius: var(--radius-md); flex: none;
  background: var(--accent-tint); color: var(--accent); display: flex; align-items: center; justify-content: center;
}
.quick-nav-grid .glass-row .btn,
.quick-nav-grid .glass-row .btn-row { margin-top: auto; }
.studio-row-split { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: var(--space-5); width: 100%; }
@media (max-width: 900px) { .studio-row-split { grid-template-columns: 1fr; } }

@media (max-width: 1199px) {
  .bento { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .bento-tile.span2 { grid-column: span 2; }
  .overview-stats-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 1023px) {
  .atrium-hero { grid-template-columns: 1fr; }
  .hero-3d-preview { order: -1; }
}
@media (max-width: 767px) {
  .atrium-hero { padding: var(--space-4); gap: var(--space-4); border-radius: var(--radius-xl); }
  .hero-main { flex-direction: column; align-items: flex-start; gap: var(--space-4); }
  .hero-ring { --ring-size: 92px; }
  .hero-actions { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .hero-actions #btn-go-live, .hero-actions #btn-stop-stream, .hero-actions .rec-duration-pill { grid-column: 1 / -1; justify-content: center; }
  .bento, .overview-stats-grid { grid-template-columns: 1fr; }
  .bento-tile.span2, .stat-tile-glass.span2 { grid-column: span 1; }
  .health-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); gap: var(--space-2); }
  .health-grid .stat-value { font-size: var(--text-lg); }
}