/* ==========================================================================
   RITHM · STAGE — Shell (top bar, rack nav, bottom strip)
   --------------------------------------------------------------------------
   Layout container: .stage-shell  →  CSS grid with sidebar + main column.
   ========================================================================== */

.stage-shell {
  display: grid;
  grid-template-columns: auto 1fr;
  min-height: 100vh;
  background:
    radial-gradient(circle at 1px 1px, var(--stage-panel) 1px, transparent 0),
    linear-gradient(180deg, #1F1F22 0%, #16161A 100%);
  background-size: 4px 4px, 100% 100%;
}

.stage-shell__column {
  display: flex;
  flex-direction: column;
  min-width: 0;
}

.stage-shell__main {
  flex: 1;
  padding: 22px 26px 28px;
  min-height: 0;
  background:
    radial-gradient(circle at 1px 1px, var(--stage-panel) 1px, transparent 0),
    linear-gradient(180deg, #1F1F22 0%, #16161A 100%);
  background-size: 4px 4px, 100% 100%;
}

/* ──────────────────────────────────────────────────────────────────────────
   Top bar — brushed-metal header with logo plate + LCD readouts
   ────────────────────────────────────────────────────────────────────────── */

.stage-topbar {
  height: 76px;
  border-bottom: 2px solid #000;
  display: flex;
  align-items: center;
  padding: 0 22px;
  gap: 22px;
  position: sticky;
  top: 0;
  z-index: 50;
  box-shadow: 0 4px 14px rgba(0, 0, 0, 0.55);
  /* brushed-metal */
  background:
    repeating-linear-gradient(180deg,
      rgba(255, 255, 255, 0.018) 0,
      rgba(0, 0, 0, 0.06)        1px,
      rgba(255, 255, 255, 0.018) 2px),
    linear-gradient(180deg, #3A3A40 0%, var(--stage-panel) 100%);
}

.stage-topbar__signal {
  display: flex;
  align-items: center;
  gap: 12px;
  padding-left: 8px;
  padding-right: 4px;
  border-left: 1px solid #000;
  height: 48px;
}

.stage-topbar__signal-label {
  font-family: var(--stage-font-mono);
  font-size: 8px;
  letter-spacing: 0.22em;
  color: var(--stage-mute-2);
}

.stage-topbar__signal-value {
  font-family: var(--stage-font-lcd);
  font-size: 16px;
  color: var(--stage-led-green);
  text-shadow: 0 0 6px rgba(92, 224, 139, 0.5);
  letter-spacing: 0.1em;
}

.stage-topbar__spacer { flex: 1; }

.stage-topbar__user {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 6px 12px 6px 6px;
  background: linear-gradient(180deg, var(--stage-panel-hi) 0%, var(--stage-panel) 100%);
  border: 1px solid #000;
  border-radius: var(--stage-radius-panel);
  box-shadow: inset 0 1px 0 var(--stage-edge);
  text-decoration: none;
  cursor: pointer;
}

.stage-topbar__avatar {
  width: 34px; height: 34px;
  border-radius: 2px;
  background: radial-gradient(circle at 30% 30%, var(--stage-amber) 0%, var(--stage-amber-dim) 80%);
  color: #000;
  font-family: var(--stage-font-mono);
  font-weight: 800;
  font-size: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  letter-spacing: -0.02em;
  box-shadow: 0 0 8px rgba(255, 176, 32, 0.33), inset 0 1px 0 var(--stage-amber-bright);
}

.stage-topbar__user-meta { line-height: 1.1; }
.stage-topbar__user-label {
  font-family: var(--stage-font-mono);
  font-size: 8px;
  letter-spacing: 0.22em;
  color: var(--stage-mute-2);
}
.stage-topbar__user-name {
  font-family: var(--stage-font-mono);
  font-size: 11px;
  font-weight: 700;
  color: var(--stage-ink);
  letter-spacing: 0.05em;
}

/* ──────────────────────────────────────────────────────────────────────────
   Rack nav (sidebar) — replaces the existing .sidebar
   ────────────────────────────────────────────────────────────────────────── */

.stage-racknav {
  width: 264px;
  background: linear-gradient(180deg, var(--stage-panel) 0%, var(--stage-chassis) 100%);
  border-right: 1px solid #000;
  box-shadow: inset -1px 0 0 rgba(51, 51, 58, 0.2), 4px 0 12px rgba(0, 0, 0, 0.5);
  display: flex;
  flex-direction: column;
  position: sticky;
  top: 0;
  height: 100vh;
  flex-shrink: 0;
}

.stage-racknav--compact { width: 240px; }

.stage-racknav__plate {
  position: relative;
  padding: 14px 14px;
  border-bottom: 2px solid #000;
  background:
    repeating-linear-gradient(180deg,
      rgba(255, 255, 255, 0.018) 0,
      rgba(0, 0, 0, 0.06)        1px,
      rgba(255, 255, 255, 0.018) 2px),
    linear-gradient(180deg, #3A3A40 0%, var(--stage-panel) 100%);
  box-shadow: inset 0 -1px 0 #000;
}

.stage-racknav__plate > .stage-screw:nth-child(1) { position: absolute; top: 4px; left: 4px; }
.stage-racknav__plate > .stage-screw:nth-child(2) { position: absolute; top: 4px; right: 4px; }

.stage-racknav__plate-eyebrow {
  font-family: var(--stage-font-mono);
  font-size: 9px;
  letter-spacing: 0.24em;
  color: var(--stage-mute-2);
  font-weight: 600;
  padding-left: 14px;
}

.stage-racknav__plate-title {
  font-family: var(--stage-font-mono);
  font-size: 22px;
  font-weight: 800;
  color: var(--stage-ink);
  margin-top: 2px;
  padding-left: 14px;
  letter-spacing: -0.01em;
  text-shadow: 0 1px 0 #000;
}

.stage-racknav__list {
  flex: 1;
  overflow-y: auto;
  overflow-x: hidden;
  padding-bottom: 12px;
}

.stage-racknav__group {
  padding: 14px 14px 6px;
  display: flex;
  align-items: center;
  gap: 6px;
  border-bottom: 1px solid #000;
  margin-bottom: 4px;
}

.stage-racknav__group-icon {
  color: var(--stage-amber-dim);
  font-family: var(--stage-font-mono);
  font-size: 16px;
  opacity: 0.7;
}

.stage-racknav__group-label {
  font-family: var(--stage-font-mono);
  font-size: 9px;
  letter-spacing: 0.24em;
  color: var(--stage-mute);
  font-weight: 700;
}

.stage-racknav__item {
  display: grid;
  grid-template-columns: 10px 36px 1fr auto;
  gap: 10px;
  align-items: center;
  width: 100%;
  background: transparent;
  border: none;
  border-top: 1px solid transparent;
  border-bottom: 1px solid var(--stage-panel-deep);
  padding: 8px 12px 8px 14px;
  text-align: left;
  text-decoration: none;
  cursor: pointer;
  transition: background 0.1s;
}

.stage-racknav__item:hover {
  background: rgba(255, 255, 255, 0.025);
}

.stage-racknav__item.is-active {
  background: linear-gradient(180deg, rgba(51, 51, 58, 0.8) 0%, var(--stage-panel) 100%);
  border-top: 1px solid #000;
  border-bottom: 1px solid #000;
  box-shadow:
    inset 0 1px 0 var(--stage-edge),
    inset 0 -1px 0 #000,
    inset 4px 0 0 var(--stage-amber);
}

.stage-racknav__code {
  font-family: var(--stage-font-lcd);
  font-size: 14px;
  color: var(--stage-mute);
  letter-spacing: 0.05em;
}

.stage-racknav__item.is-active .stage-racknav__code {
  color: var(--stage-amber);
  text-shadow: 0 0 6px rgba(255, 176, 32, 0.55);
}

.stage-racknav__label {
  font-family: var(--stage-font-mono);
  font-size: 11px;
  font-weight: 500;
  color: var(--stage-ink-soft);
  letter-spacing: 0.06em;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.stage-racknav__item.is-active .stage-racknav__label {
  color: var(--stage-ink);
  font-weight: 600;
}

.stage-racknav__pct {
  font-family: var(--stage-font-lcd);
  font-size: 12px;
  color: var(--stage-mute);
  letter-spacing: 0.05em;
}

.stage-racknav__pct--hot {
  color: var(--stage-amber);
  text-shadow: 0 0 4px rgba(255, 176, 32, 0.7);
}

.stage-racknav__pro {
  font-family: var(--stage-font-lcd);
  font-size: 12px;
  color: var(--stage-amber);
  text-shadow: 0 0 4px var(--stage-amber);
}

.stage-racknav__item--logout {
  font: inherit;
  color: inherit;
}

.stage-racknav__item--logout:hover {
  background: rgba(255, 77, 77, 0.06);
}

.stage-racknav__item--logout:hover .stage-racknav__code,
.stage-racknav__item--logout:hover .stage-racknav__label {
  color: var(--stage-led-red);
}

.stage-racknav__item--logout:hover .stage-led--off {
  background: var(--stage-led-red);
  border-color: transparent;
  box-shadow:
    0 0 8px var(--stage-led-red),
    0 0 16px color-mix(in srgb, var(--stage-led-red) 40%, transparent),
    inset 0 0 2px rgba(255, 255, 255, 0.4);
}

.stage-racknav__logout-form {
  margin: 0;
}

.stage-racknav__footer {
  position: relative;
  border-top: 2px solid #000;
  padding: 10px 14px;
  display: flex;
  align-items: center;
  gap: 10px;
  background:
    repeating-linear-gradient(180deg,
      rgba(255, 255, 255, 0.018) 0,
      rgba(0, 0, 0, 0.06)        1px,
      rgba(255, 255, 255, 0.018) 2px),
    linear-gradient(180deg, #3A3A40 0%, var(--stage-panel) 100%);
}

.stage-racknav__footer > .stage-screw:nth-child(1) { position: absolute; bottom: 4px; left: 4px; }
.stage-racknav__footer > .stage-screw:nth-child(2) { position: absolute; bottom: 4px; right: 4px; }

.stage-racknav__footer-meta { flex: 1; padding-left: 4px; }

.stage-racknav__footer-label {
  font-family: var(--stage-font-mono);
  font-size: 8px;
  letter-spacing: 0.18em;
  color: var(--stage-mute-2);
}

.stage-racknav__footer-value {
  font-family: var(--stage-font-mono);
  font-size: 11px;
  font-weight: 700;
  color: var(--stage-led-green);
  letter-spacing: 0.1em;
}

/* ──────────────────────────────────────────────────────────────────────────
   Mobile rack-nav hamburger toggle + overlay
   ────────────────────────────────────────────────────────────────────────── */

.stage-racknav-toggle {
  display: none;
  position: fixed;
  top: 18px;
  left: 14px;
  z-index: 110;
  width: 40px;
  height: 40px;
  background: linear-gradient(180deg, var(--stage-panel-hi) 0%, var(--stage-panel) 100%);
  border: 1px solid #000;
  border-radius: var(--stage-radius);
  box-shadow: inset 0 1px 0 var(--stage-edge), 0 2px 6px rgba(0, 0, 0, 0.55);
  cursor: pointer;
  padding: 9px 10px;
  flex-direction: column;
  justify-content: space-between;
}

.stage-racknav-toggle > span {
  display: block;
  height: 2px;
  background: var(--stage-amber);
  box-shadow: 0 0 4px rgba(255, 176, 32, 0.6);
}

.stage-racknav-overlay {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 99;
  background: rgba(0, 0, 0, 0.65);
}

.stage-racknav-overlay.is-visible { display: block; }

/* ──────────────────────────────────────────────────────────────────────────
   Bottom strip — VU meters + status
   ────────────────────────────────────────────────────────────────────────── */

.stage-bottomstrip {
  height: 36px;
  border-top: 2px solid #000;
  display: flex;
  align-items: center;
  padding: 0 18px;
  gap: 14px;
  position: sticky;
  bottom: 0;
  z-index: 40;
  box-shadow: 0 -2px 8px rgba(0, 0, 0, 0.4);
  background:
    repeating-linear-gradient(180deg,
      rgba(255, 255, 255, 0.018) 0,
      rgba(0, 0, 0, 0.06)        1px,
      rgba(255, 255, 255, 0.018) 2px),
    linear-gradient(180deg, #3A3A40 0%, var(--stage-panel) 100%);
}

.stage-bottomstrip__label {
  font-family: var(--stage-font-mono);
  font-size: 9px;
  letter-spacing: 0.2em;
  color: var(--stage-mute-2);
}

.stage-bottomstrip__vu { width: 200px; }

.stage-bottomstrip__spacer { flex: 1; }

.stage-bottomstrip__status {
  font-family: var(--stage-font-mono);
  font-size: 9px;
  letter-spacing: 0.2em;
  color: var(--stage-led-green);
  text-shadow: 0 0 4px var(--stage-led-green);
}

/* ──────────────────────────────────────────────────────────────────────────
   Responsive — collapse rack nav on small screens
   ────────────────────────────────────────────────────────────────────────── */

@media (max-width: 900px) {
  .stage-shell { grid-template-columns: 1fr; }

  .stage-racknav {
    position: fixed;
    top: 0;
    left: 0;
    z-index: 100;
    height: 100vh;
    transform: translateX(-100%);
    transition: transform 0.2s ease;
  }
  .stage-racknav.is-open { transform: translateX(0); }

  .stage-racknav-toggle { display: flex; }

  .stage-topbar { gap: 10px; padding: 0 12px 0 64px; min-width: 0; overflow: hidden; }
  .stage-topbar__signal,
  .stage-topbar__user-meta,
  .stage-topbar > .stage-lcd { display: none; }
  .stage-topbar .stage-logo-plate { padding: 6px 14px 6px 22px; }
  .stage-topbar .stage-logo-plate__title { font-size: 22px; }
  .stage-topbar .stage-logo-plate__sub { display: none; }
  .stage-shell__main { padding: 14px; }
  .stage-bottomstrip { padding: 0 10px; gap: 8px; }
  .stage-bottomstrip__vu { width: 90px; }
}