/* ==============================================
   Léon Pupier — terminal CRT theme (vintage only)
   ============================================== */

:root {
  --bg: #060a06;
  --bg-deep: #030503;
  --fg: #00ff66;
  --fg-bright: #6cffaa;
  --fg-muted: #2da352;
  --fg-dim: #145a2a;
  --accent: #ffcf3a;
  --error: #ff5f56;
  --link: #6cffaa;
  --window-bg: rgba(6, 14, 6, 0.55);
  --window-border: rgba(0, 255, 102, 0.28);
  --window-chrome: rgba(0, 255, 102, 0.06);
  --glow: 0 0 1px currentColor, 0 0 4px rgba(0, 255, 102, 0.55);
  --glow-strong: 0 0 1px currentColor, 0 0 8px rgba(0, 255, 102, 0.7);
  --scanline-opacity: 0.18;
  --vignette-opacity: 0.85;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  height: 100%;
  width: 100%;
  background: #000;
  color: var(--fg);
  font-family: "JetBrains Mono", "IBM Plex Mono", "Fira Code", ui-monospace, monospace;
  font-size: 14px;
  line-height: 1.55;
  overflow: hidden;
  -webkit-font-smoothing: antialiased;
}

body {
  background: radial-gradient(ellipse at center, #0a120a 0%, #030503 70%, #000 100%);
}

/* ==============================================
   CRT frame — fills the whole window
   ============================================== */
.crt-frame {
  position: fixed;
  inset: 0;
  display: block;
  background: var(--bg-deep);
  background: radial-gradient(ellipse at center, var(--bg) 0%, var(--bg-deep) 60%, #000 100%);
  color: var(--fg);
  cursor: text;
  text-shadow: var(--glow);
  overflow: hidden;
}

.crt-screen {
  position: absolute;
  inset: 0;
  z-index: 2;
}

/* CRT visual layers */
.crt-vignette {
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: radial-gradient(
    ellipse at center,
    transparent 40%,
    rgba(0, 0, 0, calc(var(--vignette-opacity) * 0.6)) 80%,
    rgba(0, 0, 0, var(--vignette-opacity)) 100%
  );
  z-index: 5;
}

.crt-scanlines {
  position: absolute;
  inset: 0;
  pointer-events: none;
  z-index: 6;
  background: repeating-linear-gradient(
    to bottom,
    rgba(0, 0, 0, 0) 0px,
    rgba(0, 0, 0, 0) 2px,
    rgba(0, 0, 0, var(--scanline-opacity)) 3px,
    rgba(0, 0, 0, 0) 4px
  );
  mix-blend-mode: multiply;
}

.scan-off .crt-scanlines { display: none; }

.crt-flicker {
  position: absolute;
  inset: 0;
  pointer-events: none;
  z-index: 7;
  background: rgba(0, 255, 100, 0.015);
  animation: flicker 4s infinite;
}

.flicker-off .crt-flicker { display: none; }

@keyframes flicker {
  0%, 95%, 100% { opacity: 0; }
  96% { opacity: 0.4; }
  97% { opacity: 0; }
  98% { opacity: 0.6; }
  99% { opacity: 0.1; }
}

/* ==============================================
   Window — fills viewport, no rounded chrome
   ============================================== */
.window {
  position: relative;
  width: 100%;
  height: 100%;
  display: flex;
  flex-direction: column;
  background: var(--window-bg);
  border: 0;
  overflow: hidden;
}

.window-chrome {
  flex: 0 0 auto;
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 18px;
  background: var(--window-chrome);
  border-bottom: 1px solid var(--window-border);
  user-select: none;
  font-size: 12px;
}

.dots { display: flex; gap: 7px; }

.dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: transparent;
  border: 1px solid var(--fg-muted);
  box-shadow: var(--glow);
}

button.dot {
  padding: 0;
  cursor: pointer;
  font: inherit;
  outline: none;
  transition: background 0.12s, box-shadow 0.12s, transform 0.12s;
}
/* Red dot reads as a live "power LED" — visible without hover (so mobile
   users see it too) and slowly pulsing so it invites a click without
   breaking the CRT immersion. */
.dot.dot-r {
  background: rgba(255, 95, 86, 0.55);
  border-color: #ff5f56;
  box-shadow: 0 0 6px rgba(255, 95, 86, 0.55);
  animation: dot-r-pulse 2.4s ease-in-out infinite;
}
@keyframes dot-r-pulse {
  0%, 100% {
    background: rgba(255, 95, 86, 0.45);
    box-shadow: 0 0 4px rgba(255, 95, 86, 0.45);
  }
  50% {
    background: rgba(255, 95, 86, 0.85);
    box-shadow: 0 0 11px rgba(255, 95, 86, 0.9);
  }
}
.dot.dot-r:hover {
  background: #ff5f56;
  border-color: #ff5f56;
  box-shadow: 0 0 12px rgba(255, 95, 86, 0.95);
  animation: none;
}
.dot.dot-r:active { transform: scale(0.9); }
@media (prefers-reduced-motion: reduce) {
  .dot.dot-r { animation: none; }
}

/* ==============================================
   Close-button prank — multi-stage gag
   ============================================== */
.crt-frame.closing {
  animation: close-shrink 0.7s cubic-bezier(0.6, 0, 0.4, 1) forwards;
}
@keyframes close-shrink {
  0%   { transform: scale(1); opacity: 1; filter: brightness(1); }
  60%  { transform: scale(0.04); opacity: 0.9; filter: brightness(2); }
  85%  { transform: scale(0.001) translateY(0); opacity: 0.4; filter: brightness(3); }
  100% { transform: scale(1); opacity: 1; filter: brightness(1); }
}

.crt-frame.close-glitch {
  animation: close-violent-glitch 0.9s steps(20) infinite;
}
@keyframes close-violent-glitch {
  0%   { transform: translate(0, 0); filter: hue-rotate(0deg); }
  10%  { transform: translate(-6px, 3px); filter: hue-rotate(-30deg) saturate(2); }
  20%  { transform: translate(7px, -2px) skewX(2deg); filter: hue-rotate(20deg); }
  30%  { transform: translate(-3px, 6px); filter: invert(0.15) hue-rotate(180deg); }
  40%  { transform: translate(4px, -5px) skewX(-1deg); }
  55%  { transform: translate(-7px, 2px); filter: hue-rotate(90deg) brightness(1.4); }
  70%  { transform: translate(2px, -7px); }
  85%  { transform: translate(-4px, 4px); filter: hue-rotate(-45deg); }
  100% { transform: translate(0, 0); filter: hue-rotate(0deg); }
}

.crt-frame.close-escape {
  animation: close-escape-fall 0.9s ease-in forwards;
}
@keyframes close-escape-fall {
  0%   { transform: translateY(0) rotate(0); }
  40%  { transform: translateY(-10px) rotate(-1deg); }
  100% { transform: translateY(0) rotate(0); }
}

.close-error-overlay {
  position: absolute;
  inset: 0;
  z-index: 5;
  background: rgba(0, 0, 0, 0.55);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  animation: dialog-fade-in 0.18s ease-out;
  pointer-events: auto;
}
@keyframes dialog-fade-in {
  from { opacity: 0; }
  to   { opacity: 1; }
}

.close-error-dialog {
  max-width: 460px;
  width: 92%;
  background: #2b2526;
  border: 1px solid #555;
  color: #e8e3d4;
  font-family: "JetBrains Mono", monospace;
  font-size: 12px;
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.7), 0 0 30px rgba(255, 95, 86, 0.25);
  animation: dialog-pop 0.22s cubic-bezier(0.2, 1.4, 0.4, 1);
  text-shadow: none;
}
@keyframes dialog-pop {
  from { opacity: 0; transform: scale(0.85) translateY(8px); }
  to   { opacity: 1; transform: scale(1) translateY(0); }
}
.close-error-titlebar {
  background: linear-gradient(to bottom, #4a3a3a, #3a2a2a);
  padding: 8px 14px;
  display: flex;
  gap: 10px;
  align-items: center;
  font-weight: 700;
  border-bottom: 1px solid #222;
  letter-spacing: 0.02em;
}
.close-error-icon {
  color: #ffb800;
  font-size: 16px;
  text-shadow: 0 0 4px rgba(255, 184, 0, 0.5);
}
.close-error-body {
  padding: 18px 16px;
  display: flex;
  flex-direction: column;
  gap: 14px;
}
.close-error-msg {
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.close-error-msg strong {
  color: #ff5f56;
  letter-spacing: 0.04em;
}
.close-error-msg code {
  background: #1a1517;
  padding: 1px 4px;
  border-radius: 2px;
  color: #9efbb3;
}
.close-error-trace {
  background: #1a1517;
  border: 1px solid #3a3537;
  padding: 8px 10px;
  color: #888;
  font-size: 11px;
  line-height: 1.6;
}
.close-error-actions {
  display: flex;
  gap: 8px;
  padding: 10px 14px 14px;
  justify-content: flex-end;
}
.close-error-btn {
  background: #3a3535;
  border: 1px solid #555;
  color: #e8e3d4;
  font: inherit;
  font-size: 12px;
  padding: 5px 14px;
  cursor: not-allowed;
  pointer-events: none;
}
.close-error-btn.primary {
  background: linear-gradient(to bottom, #5a4a4a, #3a2828);
  border-color: #6a4040;
}

.close-escape-overlay {
  position: fixed;
  inset: 0;
  z-index: 199;
  background: #000;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: "JetBrains Mono", monospace;
  color: var(--fg-bright);
  text-shadow: var(--glow-strong);
  animation: dialog-fade-in 0.15s ease-out;
}
.close-escape-text {
  font-size: 16px;
  line-height: 1.7;
}
.close-escape-text > div {
  animation: escape-line-in 0.18s ease-out backwards;
}
.close-escape-text > div:nth-child(1) { animation-delay: 0ms; }
.close-escape-text > div:nth-child(2) { animation-delay: 150ms; }
.close-escape-text > div:nth-child(3) { animation-delay: 300ms; }
.close-escape-text > div:nth-child(4) { animation-delay: 450ms; }
.close-escape-text > div:nth-child(5) { animation-delay: 600ms; }
@keyframes escape-line-in {
  from { opacity: 0; transform: translateX(-6px); }
  to   { opacity: 1; transform: translateX(0); }
}
.close-escape-blink {
  animation: blink 1s steps(2, jump-none) infinite;
}

.window-title {
  flex: 1;
  text-align: center;
  color: var(--fg-muted);
  font-size: 12px;
  letter-spacing: 0.02em;
  text-shadow: var(--glow);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.window-meta {
  color: var(--fg-muted);
  font-size: 11px;
  text-shadow: var(--glow);
}

.window-body {
  flex: 1;
  overflow-y: auto;
  padding: 22px 32px 16px;
  scrollbar-width: thin;
  scrollbar-color: var(--fg-dim) transparent;
}

.window-body::-webkit-scrollbar { width: 8px; }
.window-body::-webkit-scrollbar-track { background: transparent; }
.window-body::-webkit-scrollbar-thumb {
  background: var(--fg-dim);
  border-radius: 4px;
}

.window-footer {
  flex: 0 0 auto;
  padding: 7px 18px;
  border-top: 1px solid var(--window-border);
  background: var(--window-chrome);
  font-size: 11px;
}

/* ==============================================
   Terminal text styles
   ============================================== */

.t-line {
  white-space: pre-wrap;
  word-break: break-word;
  text-shadow: var(--glow);
  margin: 0;
}

.t-muted { color: var(--fg-muted); }

.t-error {
  color: var(--error);
  text-shadow: 0 0 6px rgba(255, 95, 86, 0.5);
}

.t-section {
  color: var(--accent);
  text-shadow: 0 0 6px rgba(255, 207, 58, 0.4);
  margin: 8px 0 4px;
  font-weight: 700;
  letter-spacing: 0.04em;
}

.t-prompt {
  color: var(--fg-bright);
  text-shadow: var(--glow-strong);
  font-weight: 700;
  white-space: pre;
}

.t-cmd {
  color: var(--fg-bright);
  text-shadow: var(--glow-strong);
  font-weight: 600;
  white-space: pre;
}

.t-kv-key { color: var(--fg-bright); white-space: pre; }
.t-kv-sep { color: var(--fg-muted); }

.t-cmdlist { margin: 4px 0; }

.t-link {
  color: var(--link);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 2px;
  text-shadow: var(--glow);
}
.t-link:hover {
  color: var(--fg-bright);
  text-shadow: var(--glow-strong);
}

.t-banner {
  color: var(--fg-bright);
  text-shadow: var(--glow-strong);
  font-size: 11px;
  line-height: 1.05;
  margin: 4px 0 8px;
  white-space: pre;
  overflow: hidden;
  font-weight: 700;
  letter-spacing: 0;
}

.t-banner-wrap {
  position: relative;
  display: block;
  margin: 4px 0 10px;
  overflow: hidden;
}

.t-banner-anim {
  margin: 0;
  animation: banner-glow-in 1.6s ease-out;
}

@keyframes banner-glow-in {
  0%   { filter: brightness(1.4) blur(2px); }
  60%  { filter: brightness(1.2) blur(0.5px); }
  100% { filter: brightness(1) blur(0); }
}

/* Scanning beam sweep across the banner during reveal */
.t-banner-beam {
  position: absolute;
  top: 0;
  left: -30%;
  height: 100%;
  width: 30%;
  pointer-events: none;
  background: linear-gradient(
    to right,
    transparent 0%,
    rgba(108, 255, 170, 0.0) 30%,
    rgba(108, 255, 170, 0.18) 50%,
    rgba(108, 255, 170, 0.0) 70%,
    transparent 100%
  );
  mix-blend-mode: screen;
  animation: beam-sweep 1.8s ease-out 1;
  animation-fill-mode: forwards;
}

@keyframes beam-sweep {
  0%   { left: -30%; opacity: 0; }
  10%  { opacity: 1; }
  90%  { opacity: 1; }
  100% { left: 130%; opacity: 0; }
}

.t-exp { margin: 6px 0 12px; padding-left: 2px; }
.t-exp-period { margin-bottom: 4px; font-size: 12px; }
.t-exp-point { padding-left: 16px; color: var(--fg); }

.t-ls-row {
  display: block;
  font-variant-numeric: tabular-nums;
}

/* ===== Input row + caret =====
   The cursor is absolutely positioned, driven by an off-screen
   span that measures the width of input.value up to selectionStart.
   The native input caret is hidden via caret-color: transparent. */
.t-input-row {
  display: flex;
  align-items: center;
  margin-top: 4px;
  transition: opacity 180ms ease-out;
}
.t-input-row-hidden {
  opacity: 0;
  pointer-events: none;
}

.t-input-wrap {
  position: relative;
  flex: 1;
  display: inline-block;
  min-height: 1.55em;
}

.t-input {
  width: 100%;
  background: transparent;
  border: 0;
  outline: 0;
  color: var(--fg);
  font: inherit;
  text-shadow: var(--glow);
  padding: 0;
  margin: 0;
  caret-color: transparent;
  position: relative;
  z-index: 2;
}

.t-input-measure {
  position: absolute;
  top: 0;
  left: 0;
  visibility: hidden;
  white-space: pre;
  font: inherit;
  pointer-events: none;
}

.t-cursor {
  position: absolute;
  top: 0;
  left: 0;
  pointer-events: none;
  color: var(--fg-bright);
  text-shadow: var(--glow-strong);
  z-index: 1;
  line-height: 1.55;
  font-weight: 700;
  width: 0.6em;
  opacity: 0.85;
  mix-blend-mode: screen;
}

.t-cursor.active {
  animation: blink 1.05s steps(2, jump-none) infinite;
}
.t-cursor.typing {
  /* freeze solid while user is actively typing */
  animation: none !important;
  opacity: 1 !important;
}

@keyframes blink {
  0%, 49% { opacity: 0.9; }
  50%, 100% { opacity: 0; }
}

/* ==============================================
   Boot gate — captures the user gesture required to unlock AudioContext
   on touch devices, so boot SFX play from the very first frame.
   ============================================== */
.boot-gate {
  position: absolute;
  inset: 0;
  z-index: 50;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
  background: radial-gradient(ellipse at center, rgba(6, 14, 6, 0.92) 0%, rgba(0, 0, 0, 0.97) 70%);
  cursor: pointer;
  outline: none;
  -webkit-tap-highlight-color: transparent;
  user-select: none;
  animation: boot-gate-fade-in 260ms ease-out;
  font-family: inherit;
}
@keyframes boot-gate-fade-in {
  from { opacity: 0; }
  to   { opacity: 1; }
}
.boot-gate-frame {
  text-align: center;
  color: var(--fg-bright);
  text-shadow: var(--glow-strong);
  animation: boot-gate-content-in 520ms cubic-bezier(0.2, 0.7, 0.2, 1) backwards;
  animation-delay: 80ms;
}
@keyframes boot-gate-content-in {
  from { opacity: 0; transform: translateY(4px); filter: brightness(2) blur(2px); }
  to   { opacity: 1; transform: translateY(0);   filter: brightness(1) blur(0); }
}
.boot-gate-title {
  font-size: 44px;
  font-weight: 700;
  letter-spacing: 0.22em;
  text-indent: 0.22em; /* compensate for letter-spacing on last char */
  line-height: 1;
  margin-bottom: 10px;
}
.boot-gate-sub {
  font-size: 11px;
  color: var(--fg-muted);
  letter-spacing: 0.18em;
  text-shadow: var(--glow);
  margin-bottom: 36px;
  text-transform: uppercase;
}
.boot-gate-cta {
  font-size: 14px;
  letter-spacing: 0.08em;
  color: var(--fg-bright);
  text-shadow: var(--glow-strong);
  display: inline-flex;
  align-items: baseline;
  gap: 4px;
}
.boot-gate-blink {
  display: inline-block;
  color: var(--fg-bright);
  animation: blink 1.05s steps(2, jump-none) infinite;
  font-weight: 700;
  margin-left: 2px;
}

@media (max-width: 480px) {
  .boot-gate-title { font-size: 34px; letter-spacing: 0.2em; }
  .boot-gate-sub   { font-size: 10px; margin-bottom: 28px; }
  .boot-gate-cta   { font-size: 13px; }
}

/* ==============================================
   Output reveal animation — phosphor glow-in
   Applied to every line pushed via pushLines (post-boot).
   Stagger via --fx-i set inline per line.
   ============================================== */
.t-fx-in {
  animation: t-fx-in 340ms cubic-bezier(0.2, 0.7, 0.2, 1) backwards;
  animation-delay: calc(var(--fx-i, 0) * 30ms);
  will-change: clip-path, filter, opacity, transform;
}
@keyframes t-fx-in {
  0% {
    opacity: 0;
    transform: translateY(-1px);
    filter: brightness(2.4) blur(1.4px);
    clip-path: inset(0 100% 0 0);
  }
  35% {
    opacity: 1;
    clip-path: inset(0 0 0 0);
    filter: brightness(1.9) blur(0.4px);
  }
  70% {
    filter: brightness(1.3) blur(0);
  }
  100% {
    opacity: 1;
    transform: translateY(0);
    filter: brightness(1);
    clip-path: inset(0);
  }
}
@media (prefers-reduced-motion: reduce) {
  .t-fx-in { animation: none !important; }
}

/* ==============================================
   Matrix overlay
   ============================================== */
.matrix-overlay {
  position: fixed;
  inset: 0;
  z-index: 100;
  background: #000;
  cursor: pointer;
}
.matrix-overlay canvas {
  display: block;
  width: 100%;
  height: 100%;
}
.matrix-hint {
  position: absolute;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%);
  color: #00ff66;
  font-family: "JetBrains Mono", monospace;
  font-size: 12px;
  text-shadow: 0 0 8px #00ff66;
  letter-spacing: 0.05em;
}

/* ==============================================
   Responsive
   ============================================== */
@media (max-width: 720px) {
  html, body { font-size: 12.5px; }
  .window-body { padding: 14px 16px 10px; }
  .window-title { font-size: 10.5px; }
  .window-meta { display: none; }
  /* Narrow ASCII banner is 47 chars wide; scale font-size with the
     viewport so it fills the screen instead of looking tiny. */
  .t-banner { font-size: clamp(8px, 2.7vw, 11px); }
  .crt-vignette { opacity: 0.5; }
}

@media (max-width: 420px) {
  .window-chrome { padding: 8px 10px; }
}

/* ==============================================
   Snake — inline embedded
   ============================================== */
.snake-inline {
  margin: 6px 0 8px;
  padding: 8px 10px 10px;
  border: 1px solid var(--fg-dim);
  background: rgba(0, 30, 12, 0.25);
  display: inline-flex;
  flex-direction: column;
  gap: 6px;
  max-width: 100%;
  animation: snake-inline-in 0.25s ease-out;
}
@keyframes snake-inline-in {
  from { opacity: 0; transform: translateY(4px); }
  to   { opacity: 1; transform: translateY(0); }
}
.snake-inline-hud {
  display: flex;
  align-items: center;
  gap: 14px;
  font-size: 11px;
  color: var(--fg-muted);
  text-shadow: var(--glow);
  letter-spacing: 0.04em;
  flex-wrap: wrap;
}
.snake-inline-tag {
  color: var(--accent);
  text-shadow: 0 0 5px rgba(255, 207, 58, 0.45);
  font-weight: 700;
}
.snake-inline-stat b {
  color: var(--fg-bright);
  font-weight: 700;
}
.snake-inline-keys {
  margin-left: auto;
  color: var(--fg-dim);
  font-size: 10.5px;
}
.snake-inline-canvas {
  display: block;
  border: 1px solid var(--fg-dim);
  image-rendering: pixelated;
  background: #020602;
  box-shadow: inset 0 0 12px rgba(0, 0, 0, 0.5);
  max-width: 100%;
  height: auto;
}

@media (max-width: 720px) {
  .snake-inline-keys { display: none; }
}
.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* ==============================================
   Ghost suggestion (auto-suggest fantôme)
   ============================================== */
.t-ghost {
  position: absolute;
  top: 0;
  left: 0;
  pointer-events: none;
  white-space: pre;
  font: inherit;
  color: transparent;
  z-index: 0;
}
.t-ghost-suffix {
  color: rgba(108, 255, 170, 0.32);
  text-shadow: 0 0 4px rgba(108, 255, 170, 0.18);
}

/* ==============================================
   Copy toast — appears when a link is clicked
   ============================================== */
.copy-toast {
  position: fixed;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 150;
  background: rgba(6, 14, 6, 0.9);
  border: 1px solid var(--fg-muted);
  color: var(--fg-bright);
  padding: 8px 16px;
  font-family: inherit;
  font-size: 12px;
  text-shadow: var(--glow);
  box-shadow: 0 0 12px rgba(0, 255, 102, 0.25);
  animation: toast-in 0.2s ease-out, toast-out 0.3s ease-in 1.5s forwards;
}
@keyframes toast-in {
  from { opacity: 0; transform: translate(-50%, 8px); }
  to   { opacity: 1; transform: translate(-50%, 0); }
}
@keyframes toast-out {
  to { opacity: 0; transform: translate(-50%, 8px); }
}

/* ==============================================
   Phosphor burn-in — persistent ghost glow
   ============================================== */
.crt-burn {
  position: absolute;
  inset: 0;
  pointer-events: none;
  z-index: 4;
  background:
    radial-gradient(ellipse 80% 30% at 50% 50%, rgba(0, 255, 102, 0.025), transparent 70%),
    radial-gradient(ellipse 60% 20% at 50% 30%, rgba(108, 255, 170, 0.018), transparent 70%);
  mix-blend-mode: screen;
}
.burn-off .crt-burn { display: none; }

/* Subtle persistent text afterglow on the body */
.burn-on .window-body::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: linear-gradient(
    to bottom,
    rgba(0, 255, 102, 0.012) 0%,
    transparent 40%
  );
  mix-blend-mode: screen;
}

/* ==============================================
   Screen curvature (barrel distortion)
   ============================================== */
.crt-outer {
  position: fixed;
  inset: 0;
  background: #000;
  overflow: hidden;
}

/* Curved CRT: scale + perspective + slight bulge via filter */
.crt-outer.curve-on .crt-frame {
  transform-origin: center;
  border-radius: 26px;
  /* Inner shadow for bulge effect at edges */
  box-shadow:
    inset 0 0 80px 30px rgba(0, 0, 0, 0.6),
    inset 0 0 200px 60px rgba(0, 0, 0, 0.45);
}

/* Glass reflection sheen (top-left highlight) */
.crt-glass {
  position: absolute;
  inset: 0;
  pointer-events: none;
  z-index: 8;
  background:
    radial-gradient(ellipse 60% 40% at 25% 18%, rgba(255, 255, 255, 0.04), transparent 60%),
    radial-gradient(ellipse 40% 80% at 100% 50%, rgba(0, 0, 0, 0.18), transparent 60%);
  mix-blend-mode: screen;
}
.curve-off .crt-glass { display: none; }

/* SVG-based barrel distortion via filter — only on supported browsers */
.curve-on .crt-screen {
  border-radius: 24px;
  overflow: hidden;
  /* Slight scaling for bulge illusion */
  transform: perspective(1400px) rotateX(0.3deg);
}

/* ==============================================
   Glitch on errors — brief shake + chromatic split + rgb noise
   ============================================== */
.crt-frame.glitching {
  animation: err-shake 0.32s steps(6) 1;
}
.crt-frame.glitching .window-body {
  animation: err-chroma 0.32s ease-out 1;
}

@keyframes err-shake {
  0%   { transform: translate(0, 0); }
  20%  { transform: translate(-2px, 1px); }
  40%  { transform: translate(2px, -1px); }
  60%  { transform: translate(-1px, 2px); }
  80%  { transform: translate(1px, -2px); }
  100% { transform: translate(0, 0); }
}

@keyframes err-chroma {
  0% {
    text-shadow:
      var(--glow),
      -2px 0 rgba(255, 0, 80, 0.7),
      2px 0 rgba(0, 200, 255, 0.7);
    filter: hue-rotate(0deg);
  }
  30% {
    text-shadow:
      var(--glow),
      3px 0 rgba(255, 0, 80, 0.6),
      -3px 0 rgba(0, 200, 255, 0.6);
    filter: hue-rotate(-15deg) brightness(1.15);
  }
  60% {
    text-shadow:
      var(--glow),
      -1px 0 rgba(255, 0, 80, 0.4),
      1px 0 rgba(0, 200, 255, 0.4);
    filter: hue-rotate(8deg);
  }
  100% {
    text-shadow: var(--glow);
    filter: none;
  }
}


/* ==============================================
   Phosphor themes — switchable monochrome palettes
   ============================================== */
.crt-frame.theme-amber {
  --bg: #14100a;
  --bg-deep: #08060a;
  --fg: #ffb04a;
  --fg-bright: #ffe1a8;
  --fg-muted: #b07020;
  --fg-dim: #5a3d12;
  --accent: #ffeb6e;
  --link: #ffe1a8;
  --window-bg: rgba(20, 14, 6, 0.55);
  --window-border: rgba(255, 176, 74, 0.28);
}
.crt-frame.theme-amber .crt-screen {
  background: radial-gradient(ellipse at center, #1a1208 0%, #0a0604 60%, #000 100%);
}

.crt-frame.theme-white {
  --bg: #0a0a0c;
  --bg-deep: #050507;
  --fg: #e6e6f0;
  --fg-bright: #ffffff;
  --fg-muted: #8a8a96;
  --fg-dim: #3d3d48;
  --accent: #b5d4ff;
  --link: #c8c8e6;
  --window-bg: rgba(10, 10, 14, 0.55);
  --window-border: rgba(230, 230, 240, 0.22);
}
.crt-frame.theme-white .crt-screen {
  background: radial-gradient(ellipse at center, #0c0c10 0%, #060608 60%, #000 100%);
}

/* "green" stays the original green from :root — no override needed */

/* ==============================================
   Konami mode — inverted phosphor + magenta accent
   ============================================== */
.crt-frame.konami {
  --fg: #ff5cf2;
  --fg-bright: #ffaaf6;
  --fg-muted: #c040b8;
  --fg-dim: #5a1a55;
  --accent: #5cf2ff;
  --link: #ffaaf6;
  --bg: #14081a;
  --bg-deep: #08040c;
  filter: hue-rotate(0deg);
}
.crt-frame.konami .crt-screen {
  background: radial-gradient(ellipse at center, #1a0a20 0%, #0c0414 60%, #000 100%);
}

/* ==============================================
   Categorized command list (help)
   ============================================== */
.t-catlist {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 14px 22px;
  margin: 8px 0 6px;
}
.t-cat {
  border-left: 1px solid var(--fg-dim);
  padding: 0 0 0 12px;
}
.t-cat-title {
  color: var(--accent);
  text-shadow: 0 0 6px rgba(255, 207, 58, 0.35);
  font-weight: 700;
  letter-spacing: 0.08em;
  margin-bottom: 6px;
  font-size: 12px;
}
.t-cat-items {
  display: flex;
  flex-direction: column;
  gap: 2px;
}
.t-cat-item {
  display: grid;
  grid-template-columns: 90px 1fr;
  gap: 8px;
  font-size: 13px;
  align-items: baseline;
}
.t-cat-cmd {
  color: var(--fg-bright);
  text-shadow: var(--glow-strong);
  font-weight: 600;
}
.t-cat-desc {
  color: var(--fg-muted);
  text-shadow: var(--glow);
}

/* ==============================================
   Reduced motion — disable flicker, scanline animation, glitch shake
   ============================================== */
@media (prefers-reduced-motion: reduce) {
  .crt-flicker,
  .crt-frame.glitching,
  .crt-frame.glitching .window-body,
  .anim-banner-cursor,
  .t-cursor.active,
  .close-escape-blink {
    animation: none !important;
  }
  .crt-frame.glitching { transform: none !important; }
}

/* ==============================================
   Mobile — true responsive layout
   ============================================== */
@media (max-width: 720px) {
  /* Disable curvature / barrel — too cramped on small screens.
     Note: do NOT force `transform: none` on .crt-frame — it would override
     the err-shake keyframes' transform and kill the glitch shake on mobile. */
  .curve-on .crt-screen {
    transform: none !important;
    border-radius: 12px;
  }
  /* Hide footer hint on mobile (no keyboard) */
  .window-footer { display: none; }
  /* Smaller window chrome */
  .window-chrome { padding: 8px 12px; }
  .window-title { font-size: 10px; }
  /* Tighten output padding */
  .window-body { padding: 12px 14px 8px; font-size: 12.5px; line-height: 1.55; }
  /* Make catlist single column on very narrow */
  .t-catlist { grid-template-columns: 1fr; gap: 10px; }
  .t-cat-item { grid-template-columns: 80px 1fr; font-size: 12px; }
  /* Less aggressive flicker / scanlines on tight screens */
  .crt-scanlines { opacity: 0.6; }
}

@media (max-width: 480px) {
  .window-meta { display: none; }
  /* Tighter line-height keeps the ASCII rows visually connected at small sizes. */
  .t-banner { line-height: 1; }
  .window-body { padding: 10px 12px 8px; font-size: 12px; }
  .t-cat-item { grid-template-columns: 70px 1fr; font-size: 11.5px; }
  .t-prompt { font-size: 12px; }
  .close-error-dialog { font-size: 11px; }
  .close-error-actions { flex-wrap: wrap; }
}

/* Touch devices: keep input always focused, larger tap target on close button */
@media (hover: none) and (pointer: coarse) {
  .dot { width: 14px; height: 14px; }
  /* Bump whole input row to 16px so iOS doesn't zoom on focus, AND so the
     measure span / cursor / ghost stay width-aligned with the real input. */
  .t-input-row,
  .t-input,
  .t-input-measure,
  .t-cursor,
  .t-ghost { font-size: 16px; }
}