:root {
  color-scheme: dark;

  /* ===========================================
     VISOR / HUD — DESIGN TOKENS (DEVTOOLS FRIENDLY)
     All functional knobs are namespaced (mostly --hud-*).
     =========================================== */

  /* --- Typography (clamp keeps the HUD engineered across resolutions) --- */
  --hud-font-family-sans: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --hud-font-family-mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas,
    "Liberation Mono", "Courier New", monospace;
  --hud-font-xs: clamp(9px, 0.62vw, 10px);
  --hud-font-sm: clamp(10px, 0.70vw, 11px);
  --hud-font-md: clamp(11px, 0.78vw, 12px);

  /* --- Spacing scale --- */
  --hud-space-xs: clamp(6px, 0.60vw, 8px);
  --hud-space-sm: clamp(8px, 0.80vw, 10px);
  --hud-space-md: clamp(10px, 1.00vw, 12px);
  --hud-space-lg: clamp(10px, 1.20vw, 14px);

  --hud-padding: var(--hud-space-lg);
  --hud-grid-gap: var(--hud-space-lg);
  --hud-header-pad-y: var(--hud-space-md);
  --hud-header-pad-x: var(--hud-space-lg);
  --hud-footer-pad-y: var(--hud-space-sm);
  --hud-footer-pad-x: var(--hud-space-md);
  --hud-panel-pad: var(--hud-space-md);
  --hud-chip-pad-y: clamp(6px, 0.65vw, 7px);
  --hud-chip-pad-x: var(--hud-space-sm);

  /* --- Geometry --- */
  --hud-radius-lg: 12px;
  --hud-radius-md: 12px;
  --hud-radius-pill: 999px;
  --hud-stroke-width: 0.5px;

  /* --- Scene backdrop (not stateful) --- */
  --scene-bg0: #050615;
  --scene-bg1: #070a1f;
  --scene-bg2: #05060f;
  --scene-tint-a-rgb: 79, 209, 197;
  --scene-tint-b-rgb: 167, 139, 250;
  --scene-tint-c-rgb: 244, 114, 182;

  /* --- HUD text (neutral, not stateful) --- */
  --hud-text: rgba(231, 234, 242, 0.94);
  --hud-text-strong: rgba(231, 234, 242, 0.92);
  --hud-text-soft: rgba(231, 234, 242, 0.86);
  --hud-muted: rgba(154, 164, 189, 0.88);
  --hud-muted-strong: rgba(154, 164, 189, 0.92);
  --hud-faint: rgba(231, 234, 242, 0.06);

  /* --- Ghost Glass surfaces (locked at the base, not re-targeted by state selectors) --- */
  --hud-panel-bg: rgba(255, 255, 255, 0.08);
  --hud-panel-bg-strong: rgba(255, 255, 255, 0.06);
  --hud-panel-highlight: linear-gradient(135deg,
      rgba(255, 255, 255, 0.1) 0%,
      rgba(255, 255, 255, 0) 100%);
  --hud-backdrop-blur: 10px;
  --hud-backdrop-saturate: 180%;
  --hud-pulse: 1;
  --hud-heartbeat: 0;
  --hud-noscript-bg: rgba(10, 14, 28, 0.88);

  /* --- Static visor projection constants --- */
  --visor-warp: 0.08;
  --visor-depth: 0.0001;

  /* --- Data-attribute state machine knobs --- */
  /* Default accent (teal) - overridden by body[data-*] selectors below */
  --alert-accent-rgb: 45, 212, 191;
  --alert-accent: rgb(var(--alert-accent-rgb));
  --glow-intensity: 0.15;

  /* --- HUD chrome (neutral, Clean Glass) --- */
  --hud-stroke: rgba(255, 255, 255, 0.15);
  --hud-stroke2: rgba(255, 255, 255, 0.08);

  --hud-accent-border-alpha: 0.35;
  --hud-accent-bg-alpha: 0.08;
  --hud-accent-border-strong-alpha: 0.45;
  --hud-accent-bg-strong-alpha: 0.12;
  --hud-accent-border-hover-alpha: 0.60;
  --hud-accent-bg-hover-alpha: 0.20;

  /* Ghost Glass: keep accents out of borders/fills (use text + scene tints instead). */
  --hud-accent-border: rgba(255, 255, 255, 0.10);
  --hud-accent-bg: rgba(255, 255, 255, 0.04);
  --hud-accent-border-strong: rgba(255, 255, 255, 0.12);
  --hud-accent-bg-strong: rgba(255, 255, 255, 0.06);
  --hud-accent-border-hover: rgba(255, 255, 255, 0.16);
  --hud-accent-bg-hover: rgba(255, 255, 255, 0.08);

  /* --- Projection stroke ("holographic border") --- */
  /* Change --hud-heat to tune the entire HUD edge "heat" in one line. */
  --hud-heat: 1;
  --hud-projection-edge-stop: 18%;
  --hud-projection-fade-alpha: 0.20;
  --hud-projection-hot: var(--alert-accent);
  --hud-projection-fade: rgba(var(--alert-accent-rgb),
      calc(var(--hud-projection-fade-alpha) * var(--hud-heat)));

  /* --- Scanlines --- */
  --hud-scanline-opacity: 0.015;
  --hud-scanline-opacity-critical: 0.05;
  --hud-scanline-thickness: 1px;
  --hud-scanline-step: 4px;
  --hud-scanline-scroll: 64px;
  --hud-scanline-speed: 12s;
  --hud-scanline-speed-critical: 4s;

  /* --- Visor reflection --- */
  --hud-reflection-alpha-1: 0.05;
  --hud-reflection-alpha-2: 0.035;
  --hud-reflection-alpha-3: 0;

  /* --- Glow + shadows --- */
  --hud-glow-inner-radius: 15px;
  --hud-glow-inner-alpha-mul: 0.2;
  --hud-glow-outer-radius: 30px;
  --hud-elevation-shadow: 0 20px 50px rgba(0, 0, 0, 0.3);

  /* --- Content semantics (not tied to alert accent) --- */
  --hud-chip-text: rgba(167, 255, 244, 0.92);
  --hud-chip-text-soft: rgba(167, 255, 244, 0.85);
  --hud-terminal-text: rgba(231, 234, 242, 0.90);

  --hud-sev-low-rgb: 74, 222, 128;
  --hud-sev-med-rgb: 251, 191, 36;
  --hud-sev-high-rgb: 251, 113, 133;
  --hud-sev-low-border: rgba(var(--hud-sev-low-rgb), 0.55);
  --hud-sev-low-bg: rgba(var(--hud-sev-low-rgb), 0.06);
  --hud-sev-low-text: rgba(194, 255, 217, 0.95);
  --hud-sev-med-border: rgba(var(--hud-sev-med-rgb), 0.55);
  --hud-sev-med-bg: rgba(var(--hud-sev-med-rgb), 0.06);
  --hud-sev-med-text: rgba(255, 237, 195, 0.95);
  --hud-sev-high-border: rgba(var(--hud-sev-high-rgb), 0.55);
  --hud-sev-high-bg: rgba(var(--hud-sev-high-rgb), 0.07);
  --hud-sev-high-text: rgba(255, 206, 214, 0.95);
}

/* ===========================================
   DATA-ATTRIBUTE STATE MACHINE (CSS LAYER)
   JS sets body.dataset, CSS interprets visuals
   =========================================== */

/* Alert Level: high — shift accent to red, increase glow */
body[data-alert-level="high"] {
  --alert-accent-rgb: 251, 113, 133;
  --glow-intensity: 0.35;
}

/* Alert Level: med — shift accent to amber */
body[data-alert-level="med"] {
  --alert-accent-rgb: 251, 191, 36;
  --glow-intensity: 0.25;
}

/* Alert Level: low — subtle green tint */
body[data-alert-level="low"] {
  --alert-accent-rgb: 45, 212, 191;
  --glow-intensity: 0.18;
}

/* System Status: critical — red accent, max glow */
body[data-system-status="critical"] {
  --alert-accent-rgb: 251, 113, 133;
  --glow-intensity: 0.5;
}

/* Visor Mode: night — cold blue accent (ISS in Earth shadow) */
body[data-visor-mode="night"] {
  --alert-accent-rgb: 96, 165, 250;
  --glow-intensity: 0.12;
}

/* Telemetry/Attack status: offline/stale visual hints */
body[data-telemetry-status="offline"] .panel--telemetry,
body[data-attack-status="offline"] .panel--attack {
  opacity: 0.7;
}

body[data-telemetry-status="stale"] .panel--telemetry,
body[data-attack-status="stale"] .panel--attack {
  opacity: 0.85;
}

* {
  box-sizing: border-box;
}

html,
body {
  height: 100%;
}

body {
  margin: 0;
  color: var(--hud-text);
  font-family: var(--hud-font-family-sans);
  background:
    radial-gradient(1200px 900px at 18% 10%,
      rgba(var(--scene-tint-a-rgb), 0.10),
      transparent 55%),
    radial-gradient(900px 700px at 86% 16%,
      rgba(var(--scene-tint-b-rgb), 0.10),
      transparent 56%),
    radial-gradient(900px 700px at 50% 88%,
      rgba(var(--scene-tint-c-rgb), 0.08),
      transparent 58%),
    linear-gradient(180deg, var(--scene-bg0), var(--scene-bg1) 45%, var(--scene-bg2) 100%);
  overflow: hidden;
}

#app {
  position: relative;
  width: 100vw;
  height: 100vh;
}

#app::after {
  content: "";
  position: fixed;
  inset: 0;
  z-index: 2;
  pointer-events: none;
  background: radial-gradient(65vmin 55vmin at 0% 0%,
      rgba(var(--alert-accent-rgb), var(--hud-reflection-alpha-1)) 0%,
      rgba(var(--alert-accent-rgb), var(--hud-reflection-alpha-2)) 28%,
      rgba(var(--alert-accent-rgb), var(--hud-reflection-alpha-3)) 60%,
      transparent 70%);
}

/* Renderer canvas */
#scene {
  position: fixed;
  inset: 0;
  width: 100vw;
  height: 100vh;
  display: block;
  z-index: -1;
  filter: none;
  pointer-events: none;
}

/* ===========================================
   HUD CONTAINER
   Flex column: header, 12×12 grid, footer
   =========================================== */
#hud,
#hud-container,
.hud {
  position: relative;
  z-index: 10;
  height: 100vh;
  width: 100vw;
  padding: var(--hud-padding);
  display: flex;
  flex-direction: column;
  gap: var(--hud-grid-gap);
  pointer-events: none;
  perspective: 1200px;
  transform-style: preserve-3d;
}

#hud,
#hud *,
#hud-container,
#hud-container *,
.hud,
.hud * {
  text-shadow: 0 1px 1px rgba(0, 0, 0, 0.35), 0 0 8px rgba(0, 0, 0, 0.18);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  backface-visibility: hidden;
  transition: none;
  animation: none;
}

.hud__header *,
.hud__footer *,
.panel * {
  transform: translateZ(0);
  backface-visibility: hidden;
}

.hud__header,
.hud__footer,
.panel {
  pointer-events: auto;
}

.hud__header,
.hud__footer,
.panel {
  background: var(--hud-panel-highlight), var(--hud-panel-bg);
  border: var(--hud-stroke-width) solid var(--hud-stroke);
  position: relative;
  border-radius: var(--hud-radius-lg);
  backdrop-filter: blur(var(--hud-backdrop-blur)) saturate(var(--hud-backdrop-saturate));
  -webkit-backdrop-filter: blur(var(--hud-backdrop-blur)) saturate(var(--hud-backdrop-saturate));
}

.hud__header {
  flex-shrink: 0;
  padding: var(--hud-header-pad-y) var(--hud-header-pad-x);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--hud-space-md);
}

.hud__brand {
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.hud__title {
  font-family: var(--hud-font-family-mono);
  letter-spacing: 0.22em;
  font-size: var(--hud-font-md);
  text-transform: uppercase;
  color: var(--hud-text-strong);
}

.hud__sub {
  font-family: var(--hud-font-family-mono);
  font-size: var(--hud-font-md);
  color: var(--hud-muted);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.hud__chips {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: var(--hud-space-xs);
  flex-wrap: wrap;
}

.chip {
  font-family: var(--hud-font-family-mono);
  font-size: var(--hud-font-sm);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  padding: var(--hud-chip-pad-y) var(--hud-chip-pad-x);
  border-radius: var(--hud-radius-pill);
  border: var(--hud-stroke-width) solid var(--hud-accent-border);
  background: var(--hud-accent-bg);
  color: var(--hud-chip-text);
  user-select: none;
}

.chip--warn {
  border-color: var(--hud-accent-border-strong);
  background: var(--hud-accent-bg-strong);
  color: var(--hud-chip-text-soft);
}

.chip--toggle {
  cursor: pointer;
  border-color: var(--hud-accent-border);
  background: var(--hud-accent-bg);
  color: var(--hud-chip-text);
}

.chip--toggle:hover {
  background: var(--hud-accent-bg-hover);
  border-color: var(--hud-accent-border-hover);
}

.chip--time {
  cursor: pointer;
  border-color: var(--hud-accent-border);
  background: var(--hud-accent-bg);
  color: var(--hud-chip-text);
  min-width: clamp(64px, 6vw, 72px);
  text-align: center;
}

.chip--time:hover {
  background: var(--hud-accent-bg-hover);
  border-color: var(--hud-accent-border-hover);
}

/* Hidden state for HUD */
.hud--hidden .hud__grid,
.hud--hidden .hud__footer {
  visibility: hidden;
}

/* ===========================================
   HUD GRID CONTAINER
   Panels are absolutely positioned within this container
   =========================================== */
.hud__grid {
  flex: 1;
  min-height: 0;
  position: relative;
  transform-style: preserve-3d;
}

/* ===========================================
   PANEL BASE
   Absolutely positioned, sizes to content
   =========================================== */
.panel {
  position: absolute;
  padding: var(--hud-panel-pad);
  display: flex;
  flex-direction: column;
  transform-style: preserve-3d;
  z-index: 0;
  border-color: transparent;
  background: var(--hud-panel-highlight), var(--hud-panel-bg);
  transition: none;
  box-shadow: var(--hud-elevation-shadow);
  /* Grow dynamically but stop before overflowing viewport */
  max-height: calc(100vh - 140px);
}

.panel>* {
  position: relative;
  z-index: 1;
}

.panel::before {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  pointer-events: none;
  z-index: 2;
  border: var(--hud-stroke-width) solid var(--hud-stroke);
}

/* 3D visor transforms for curved panel effect */
.panel.at-left {
  transform: matrix3d(1, 0, 0.08, 0.0001, 0, 1, 0, 0, -0.08, 0, 1, 0, 0, 0, 0, 1);
  transform-origin: right center;
  box-shadow: var(--hud-elevation-shadow), inset -2px 0 0 rgba(255, 255, 255, 0.10);
}

.panel.at-right {
  transform: matrix3d(1, 0, -0.08, -0.0001, 0, 1, 0, 0, 0.08, 0, 1, 0, 0, 0, 0, 1);
  transform-origin: left center;
  box-shadow: var(--hud-elevation-shadow), inset 2px 0 0 rgba(255, 255, 255, 0.10);
}

.panel.at-center {
  transform: none;
}

.panel.is-placed {
  z-index: 10;
  pointer-events: auto;
}

.panel.is-dragging {
  position: fixed;
  z-index: 999;
  filter: brightness(1.15);
  cursor: grabbing;
  transition: none;
  pointer-events: auto;
  /* Clear anchor constraints - JS controls left/top via inline styles */
  right: auto;
  bottom: auto;
  /* Disable 3D transforms during drag for responsive movement */
  transform: none;
  will-change: left, top;
}

.panel--terminal::before {
  -webkit-mask-image: linear-gradient(to right,
      rgba(0, 0, 0, 0) 0%,
      rgba(0, 0, 0, 1) 22%,
      rgba(0, 0, 0, 1) 100%);
  mask-image: linear-gradient(to right,
      rgba(0, 0, 0, 0) 0%,
      rgba(0, 0, 0, 1) 22%,
      rgba(0, 0, 0, 1) 100%);
}

.panel--attack::before,
.panel--telemetry::before {
  -webkit-mask-image: linear-gradient(to left,
      rgba(0, 0, 0, 0) 0%,
      rgba(0, 0, 0, 1) 22%,
      rgba(0, 0, 0, 1) 100%);
  mask-image: linear-gradient(to left,
      rgba(0, 0, 0, 0) 0%,
      rgba(0, 0, 0, 1) 22%,
      rgba(0, 0, 0, 1) 100%);
}

.panel__body {
  flex: 1 1 auto;
  overflow-x: hidden;
  overflow-y: auto;
  /* Grow with content until hitting viewport edge (minus header/footer ~100px) */
  max-height: calc(100vh - 100px);
  border-radius: calc(var(--hud-radius-lg) - 2px);
  background: linear-gradient(180deg, rgba(0, 0, 0, 0.6) 0%, rgba(0, 0, 0, 0.3) 100%);
  padding: 15px;
  color: var(--hud-text);
}

/* ===========================================
   PANEL POSITIONS AND SIZES
   =========================================== */

.panel--terminal {
  top: 0;
  left: 0;
  min-width: 350px;
  min-height: 400px;
}

.panel--attack {
  top: 0;
  right: 0;
  min-width: 280px;
}

.panel--telemetry {
  bottom: 0;
  right: 0;
  min-width: 280px;
  min-height: 160px;
}

/* ===========================================
   PANEL TITLE STYLES
   =========================================== */
.panel__title {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--hud-space-sm);
  padding: var(--hud-space-xs) var(--hud-space-sm);
  flex-shrink: 0;
  font-family: var(--hud-font-family-mono);
  font-size: var(--hud-font-xs);
  letter-spacing: 0.12em;
  color: var(--hud-muted);
  border-bottom: var(--hud-stroke-width) solid var(--hud-stroke2);
  cursor: grab;
  user-select: none;
}

.panel__title-text {
  text-transform: uppercase;
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  color: rgba(255, 255, 255, 0.95);
  text-shadow: 0 0 8px rgba(255, 255, 255, 0.4);
}

.tag {
  flex-shrink: 0;
  display: inline-flex;
  align-items: center;
  padding: clamp(2px, 0.25vw, 3px) clamp(6px, 0.6vw, 7px);
  border-radius: var(--hud-radius-pill);
  font-size: var(--hud-font-xs);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  border: var(--hud-stroke-width) solid var(--hud-accent-border);
  background: var(--hud-accent-bg);
  color: var(--hud-chip-text);
}

/* ===========================================
   PANEL CONTENT STYLES
   =========================================== */
.terminal {
  margin: 0;
  font-family: var(--hud-font-family-mono);
  font-size: var(--hud-font-md);
  line-height: 1.5;
  color: var(--hud-terminal-text);
  white-space: pre-wrap;
}

#terminal {
  scrollbar-width: thin;
  scrollbar-color: rgba(255, 255, 255, 0.22) transparent;
}

#terminal::-webkit-scrollbar {
  width: 2px;
  height: 2px;
}

#terminal::-webkit-scrollbar-track {
  background: transparent;
}

#terminal::-webkit-scrollbar-thumb {
  background: rgba(255, 255, 255, 0.22);
  border: 0;
}

#terminal::-webkit-scrollbar-corner {
  background: transparent;
}

.kv {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: var(--hud-space-sm);
  padding: clamp(5px, 0.6vw, 6px) clamp(7px, 0.8vw, 8px);
  border-bottom: var(--hud-stroke-width) solid var(--hud-stroke2);
  font-family: var(--hud-font-family-mono);
  font-size: var(--hud-font-sm);
}

.kv:last-child {
  border-bottom: 0;
}

.kv .k {
  color: var(--hud-muted-strong);
  letter-spacing: 0.12em;
  white-space: nowrap;
}

.kv .v {
  color: var(--hud-text-strong);
  white-space: nowrap;
}

.feed-summary {
  padding: var(--hud-space-xs) var(--hud-space-sm);
  margin-bottom: var(--hud-space-xs);
  font-family: var(--hud-font-family-mono);
  font-size: var(--hud-font-xs);
  color: var(--hud-cyan);
  border-bottom: var(--hud-stroke-width) solid var(--hud-stroke);
  letter-spacing: 0.05em;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.panel--attack {
  height: clamp(260px, 42vh, 420px);
}

.panel--attack .panel__body {
  min-height: 0;
  display: flex;
  flex-direction: column;
}

.attack-filter {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--hud-space-xs);
  margin-bottom: var(--hud-space-xs);
  font-family: var(--hud-font-family-mono);
  font-size: var(--hud-font-xs);
  flex-shrink: 0;
}

.attack-filter__group {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.attack-filter__btn {
  appearance: none;
  border: var(--hud-stroke-width) solid var(--hud-stroke2);
  border-radius: var(--hud-radius-pill);
  padding: 2px 8px;
  font-size: var(--hud-font-xs);
  letter-spacing: 0.08em;
  background: var(--hud-accent-bg);
  color: var(--hud-muted-strong);
  cursor: pointer;
}

.attack-filter__btn:hover {
  border-color: var(--hud-accent-border-hover);
  color: var(--hud-text-strong);
}

.attack-filter__btn.is-active {
  border-color: var(--alert-accent);
  color: var(--alert-accent);
  background: rgba(var(--alert-accent-rgb), 0.10);
}

.feed-list {
  display: flex;
  flex-direction: column;
  flex: 1 1 auto;
  min-height: 0;
  overflow-y: auto;
}

.feedrow {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: clamp(5px, 0.6vw, 6px) clamp(7px, 0.8vw, 8px);
  border-bottom: var(--hud-stroke-width) solid var(--hud-stroke2);
  font-family: var(--hud-font-family-mono);
  font-size: var(--hud-font-sm);
}

.feedrow:last-child {
  border-bottom: 0;
}

.feedrow.is-clickable {
  cursor: pointer;
}

.feedrow__line {
  color: var(--hud-text-strong);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.feedrow__detail {
  display: none;
  padding: 2px 0 0 0;
  font-size: var(--hud-font-xs);
  color: var(--hud-text-soft);
  word-break: break-word;
}

.feedrow.is-open .feedrow__detail {
  display: block;
}


/* ===========================================
   FOOTER
   =========================================== */
.hud__footer {
  flex-shrink: 0;
  padding: var(--hud-footer-pad-y) var(--hud-footer-pad-x);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--hud-space-md);
}

.statusline {
  font-family: var(--hud-font-family-mono);
  font-size: var(--hud-font-sm);
  color: var(--hud-muted);
  letter-spacing: 0.06em;
  user-select: none;
}

.statusline--right {
  text-align: right;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* ===========================================
   NOSCRIPT FALLBACK
   =========================================== */
.noscript {
  position: fixed;
  inset: var(--hud-space-md);
  border-radius: var(--hud-radius-lg);
  padding: var(--hud-space-lg);
  border: var(--hud-stroke-width) solid var(--hud-stroke);
  background: var(--hud-noscript-bg);
  color: var(--hud-text-strong);
  font-family: var(--hud-font-family-mono);
  z-index: 3;
}

/* ===========================================
   RESPONSIVE: TABLET BREAKPOINT
   =========================================== */
@media (max-width: 920px) {
  .hud__grid {
    grid-template-columns: 1fr;
    grid-template-rows: 1fr 0.5fr 0.4fr;
  }

  .panel--terminal {
    grid-column: 1;
    grid-row: 1;
  }

  .panel--attack {
    grid-column: 1;
    grid-row: 2;
  }

  .panel--telemetry {
    grid-column: 1;
    grid-row: 3;
  }

  /* Flatten 3D effects on smaller screens (panels are stacked vertically) */
  .panel.at-left,
  .panel.at-right {
    transform: none;
    box-shadow: var(--hud-elevation-shadow);
  }
}

/* ===========================================
   RESPONSIVE: MOBILE BREAKPOINT
   =========================================== */
@media (max-width: 600px) {
  .hud {
    padding: var(--hud-space-sm);
  }

  .hud__header {
    flex-wrap: wrap;
    justify-content: center;
    text-align: center;
  }

  .hud__brand {
    align-items: center;
    width: 100%;
  }

  .hud__chips {
    justify-content: center;
    width: 100%;
  }

  .panel--terminal {
    min-height: 250px;
  }

  .panel--attack,
  .panel--telemetry {
    min-height: 200px;
  }
}