/* =====================================================================
   HACKERMAN APARTMENT QUEST — terminal.css
   Green-phosphor CRT console. Desktop-first. Russian body + English decor.
   All screen show/hide + effect classes are toggled by js/engine.js + ui.js.
   ===================================================================== */

/* ------------------------------------------------------------------ *
 * @font-face — vendored woff2 (see tools/fetch-assets.sh).
 * VT323 = Latin pixel display. JetBrains Mono = crisp Cyrillic + Latin body.
 * Robust fallback stack everywhere so it survives a missing woff2.
 * ------------------------------------------------------------------ */
@font-face {
  font-family: "VT323";
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url("../fonts/vt323-latin-400.woff2") format("woff2");
  /* Basic Latin only — Cyrillic intentionally falls back to JetBrains Mono */
  unicode-range: U+0000-00FF, U+2000-206F, U+2190-25FF, U+2500-259F;
}
@font-face {
  font-family: "JetBrains Mono";
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url("../fonts/jetbrains-mono-cyrillic-400.woff2") format("woff2");
  unicode-range: U+0400-04FF;
}
@font-face {
  font-family: "JetBrains Mono";
  font-style: normal;
  font-weight: 700;
  font-display: swap;
  src: url("../fonts/jetbrains-mono-cyrillic-700.woff2") format("woff2");
  unicode-range: U+0400-04FF;
}
@font-face {
  font-family: "JetBrains Mono";
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url("../fonts/jetbrains-mono-latin-400.woff2") format("woff2");
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+2000-206F, U+2074,
                 U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}
@font-face {
  font-family: "JetBrains Mono";
  font-style: normal;
  font-weight: 700;
  font-display: swap;
  src: url("../fonts/jetbrains-mono-latin-700.woff2") format("woff2");
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+2000-206F, U+2074,
                 U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}

/* ------------------------------------------------------------------ *
 * Design tokens
 * ------------------------------------------------------------------ */
:root {
  /* phosphor palette */
  --bg:            #0a0f0a;
  --bg-deep:       #050805;
  --panel-bg:      rgba(10, 24, 12, 0.55);
  --green:         #33ff66;
  --green-dim:     #1f9d47;
  --green-faint:   #14612d;
  --amber:         #ffcc00;
  --red:           #ff5f56;
  --cyan:          #4fd6ff;
  --ink:           #bfffce;      /* soft near-white green for body text */

  --line:          rgba(51, 255, 102, 0.35);
  --line-soft:     rgba(51, 255, 102, 0.18);

  /* glows */
  --glow-green:    0 0 4px rgba(51,255,102,0.55), 0 0 12px rgba(51,255,102,0.25);
  --glow-amber:    0 0 5px rgba(255,204,0,0.6), 0 0 14px rgba(255,204,0,0.3);
  --glow-red:      0 0 5px rgba(255,95,86,0.7), 0 0 16px rgba(255,95,86,0.35);

  /* typography */
  --font-mono:     "JetBrains Mono","Cascadia Code",Consolas,"DejaVu Sans Mono",monospace;
  --font-display:  "VT323","JetBrains Mono","Cascadia Code",Consolas,"DejaVu Sans Mono",monospace;

  --console-max:   940px;
  --radius:        6px;

  color-scheme: dark;
}

/* ------------------------------------------------------------------ *
 * Base / reset
 * ------------------------------------------------------------------ */
*, *::before, *::after { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  min-height: 100%;
}

body {
  background:
    radial-gradient(120% 120% at 50% 0%, #0d160d 0%, var(--bg) 45%, var(--bg-deep) 100%);
  color: var(--ink);
  font-family: var(--font-mono);
  font-size: 16px;
  line-height: 1.55;
  letter-spacing: 0.02em;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
  padding: 28px 16px 56px;
}

::selection { background: rgba(51,255,102,0.30); color: #eafff0; }

a { color: var(--cyan); text-decoration: none; }
a:hover, a:focus-visible { text-decoration: underline; }

:focus-visible {
  outline: 2px solid var(--green);
  outline-offset: 2px;
}

.visually-hidden {
  position: absolute !important;
  width: 1px; height: 1px;
  margin: -1px; padding: 0; border: 0;
  clip: rect(0 0 0 0); clip-path: inset(50%);
  overflow: hidden; white-space: nowrap;
}

.hidden { display: none !important; }

/* ------------------------------------------------------------------ *
 * CRT frame + overlays
 * ------------------------------------------------------------------ */
#crt.crt {
  position: relative;
  max-width: var(--console-max);
  margin: 0 auto;
  min-height: calc(100vh - 84px);
  padding: 0;
  border: 1px solid var(--line);
  border-radius: 12px;
  background:
    linear-gradient(180deg, rgba(12,26,14,0.35), rgba(6,12,7,0.55));
  box-shadow:
    0 0 0 1px rgba(0,0,0,0.6) inset,
    0 0 40px rgba(51,255,102,0.06) inset,
    0 18px 60px rgba(0,0,0,0.7),
    0 0 30px rgba(51,255,102,0.08);
  overflow: hidden;
  isolation: isolate;
}

/* scanlines */
.crt-scanlines {
  position: absolute; inset: 0;
  pointer-events: none; z-index: 40;
  background: repeating-linear-gradient(
    to bottom,
    rgba(0,0,0,0) 0px,
    rgba(0,0,0,0) 2px,
    rgba(0,0,0,0.18) 3px,
    rgba(0,0,0,0.18) 4px
  );
  mix-blend-mode: multiply;
  opacity: 0.55;
}
/* slow rolling scan bar */
.crt-scanlines::after {
  content: "";
  position: absolute; left: 0; right: 0; height: 30%;
  background: linear-gradient(
    to bottom,
    rgba(51,255,102,0) 0%,
    rgba(51,255,102,0.05) 50%,
    rgba(51,255,102,0) 100%);
  animation: crt-roll 7s linear infinite;
}

/* vignette */
.crt-vignette {
  position: absolute; inset: 0;
  pointer-events: none; z-index: 41;
  background:
    radial-gradient(120% 100% at 50% 50%,
      rgba(0,0,0,0) 55%,
      rgba(0,0,0,0.35) 85%,
      rgba(0,0,0,0.7) 100%);
}

/* flicker */
.crt-flicker {
  position: absolute; inset: 0;
  pointer-events: none; z-index: 42;
  background: rgba(51,255,102,0.02);
  animation: crt-flicker 5.5s steps(60) infinite;
}

@keyframes crt-roll   { from { transform: translateY(-120%);} to { transform: translateY(430%);} }
@keyframes crt-flicker {
  0%,100% { opacity: 0.10; }
  6%   { opacity: 0.22; }
  8%   { opacity: 0.05; }
  12%  { opacity: 0.18; }
  40%  { opacity: 0.08; }
  42%  { opacity: 0.20; }
  70%  { opacity: 0.06; }
  72%  { opacity: 0.16; }
}

/* ------------------------------------------------------------------ *
 * HUD (progress)
 * ------------------------------------------------------------------ */
#hud.hud {
  position: relative;
  z-index: 5;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  flex-wrap: wrap;
  padding: 12px 20px;
  border-bottom: 1px dashed var(--line);
  background: linear-gradient(180deg, rgba(51,255,102,0.06), rgba(0,0,0,0));
  font-size: 13px;
}

.hud-brand { display: flex; align-items: baseline; gap: 8px; white-space: nowrap; }
.hud-dot {
  width: 9px; height: 9px; border-radius: 50%;
  background: var(--green);
  box-shadow: var(--glow-green);
  align-self: center;
  animation: pulse 1.6s ease-in-out infinite;
}
.hud-title {
  font-family: var(--font-display);
  font-size: 20px; line-height: 1;
  color: var(--green);
  text-shadow: var(--glow-green);
  letter-spacing: 0.06em;
}
.hud-sub { color: var(--green-dim); font-size: 12px; letter-spacing: 0.08em; }

.hud-progress {
  display: flex; align-items: center; gap: 12px;
  flex: 1 1 320px; justify-content: flex-end;
}
.hud-pct {
  color: var(--amber);
  text-shadow: var(--glow-amber);
  font-weight: 700;
  min-width: 3.2em; text-align: right;
}
#progress-bar.hud-bar {
  position: relative;
  flex: 1 1 auto;
  max-width: 360px;
  height: 12px;
  border: 1px solid var(--line);
  border-radius: 3px;
  background:
    repeating-linear-gradient(90deg,
      rgba(51,255,102,0.06) 0 6px,
      rgba(0,0,0,0) 6px 8px);
  overflow: hidden;
}
#progress-fill.hud-fill {
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, var(--green-dim), var(--green));
  box-shadow: 0 0 10px rgba(51,255,102,0.6);
  transition: width 0.6s cubic-bezier(.2,.8,.2,1);
}
#progress-fill.hud-fill::after {
  content: "";
  position: absolute; top: 0; bottom: 0; right: 0; width: 2px;
  background: #d9ffe4; box-shadow: 0 0 8px #fff;
}
.hud-steps {
  color: var(--green-dim);
  font-weight: 700;
  letter-spacing: 0.1em;
  white-space: nowrap;
}

/* ------------------------------------------------------------------ *
 * Screens — .active shows, everything else is hidden
 * ------------------------------------------------------------------ */
.screens {
  position: relative;
  z-index: 4;
  padding: 26px clamp(16px, 3.5vw, 34px) 34px;
}
.screen { display: none; }
.screen.active {
  display: block;
  animation: screen-in 0.35s ease both;
}
@keyframes screen-in {
  from { opacity: 0; transform: translateY(6px); filter: brightness(1.6); }
  to   { opacity: 1; transform: none;             filter: none; }
}

/* ------------------------------------------------------------------ *
 * Panels (dashed hacker cards)
 * ------------------------------------------------------------------ */
.panel {
  position: relative;
  border: 1px dashed var(--line);
  border-radius: var(--radius);
  background: var(--panel-bg);
  padding: 26px clamp(18px, 3vw, 30px) 28px;
  box-shadow: 0 0 24px rgba(51,255,102,0.05) inset;
}
.panel + .panel { margin-top: 20px; }

.panel-tag {
  position: absolute;
  top: -0.72em; left: 18px;
  padding: 0 10px;
  background: var(--bg);
  color: var(--green-dim);
  font-size: 12px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}
.panel-tag--ok { color: var(--green); text-shadow: var(--glow-green); }

.hint-label {
  display: block;
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--green-dim);
  margin-bottom: 6px;
}
.hint-label--gold { color: var(--amber); text-shadow: var(--glow-amber); }

.prompt {
  color: var(--green);
  text-shadow: var(--glow-green);
  font-weight: 700;
}
.dim { color: var(--green-faint); }

/* ------------------------------------------------------------------ *
 * Buttons
 * ------------------------------------------------------------------ */
.btn {
  font-family: var(--font-mono);
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--green);
  background: rgba(51,255,102,0.06);
  border: 1px solid var(--line);
  border-radius: 4px;
  padding: 11px 20px;
  cursor: pointer;
  text-transform: uppercase;
  transition: background .15s, box-shadow .15s, color .15s, transform .05s;
  -webkit-tap-highlight-color: transparent;
}
.btn:hover, .btn:focus-visible {
  background: rgba(51,255,102,0.16);
  box-shadow: var(--glow-green);
  color: #eafff0;
}
.btn:active { transform: translateY(1px); }
.btn-bracket { color: var(--green-dim); }
.btn:hover .btn-bracket, .btn:focus-visible .btn-bracket { color: var(--green); }

.btn--primary { margin-top: 20px; }
.btn--inline  { margin-top: 0; white-space: nowrap; }

/* ------------------------------------------------------------------ *
 * Inputs
 * ------------------------------------------------------------------ */
.input {
  font-family: var(--font-mono);
  color: var(--ink);
  background: rgba(0,0,0,0.35);
  border: 1px solid var(--line);
  border-radius: 4px;
  padding: 12px 14px;
  outline: none;
  caret-color: var(--green);
}
.input::placeholder { color: var(--green-faint); }
.input:focus {
  border-color: var(--green);
  box-shadow: 0 0 0 1px var(--green), var(--glow-green);
  background: rgba(0,0,0,0.5);
}

.code-field, .answer-field { display: flex; align-items: center; gap: 10px; margin-top: 8px; }
.field-caret { color: var(--green); text-shadow: var(--glow-green); font-weight: 700; }

.input--code {
  flex: 1 1 auto;
  font-size: clamp(16px, 2.6vw, 22px);
  letter-spacing: 0.34em;
  text-transform: none;
  color: var(--amber);
  text-shadow: var(--glow-amber);
}
.input--answer {
  flex: 1 1 auto;
  font-size: 16px;
}

.code-lede { font-size: 15px; margin: 2px 0 4px; }
.code-stagenum { color: var(--amber); text-shadow: var(--glow-amber); font-weight: 700; }
.code-instruction { color: var(--green-dim); font-size: 14px; margin: 6px 0 4px; }

/* ------------------------------------------------------------------ *
 * Messages (errors)
 * ------------------------------------------------------------------ */
.msg { margin: 12px 0 0; min-height: 1.2em; font-size: 14px; }
.msg--error { color: var(--red); text-shadow: var(--glow-red); }
.msg:empty { display: none; }

/* ------------------------------------------------------------------ *
 * BOOT screen
 * ------------------------------------------------------------------ */
#scr-boot { padding-top: 6px; }
.boot-log {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 14px;
  line-height: 1.5;
  color: var(--green);
  text-shadow: var(--glow-green);
  white-space: pre-wrap;
  word-break: break-word;
  min-height: 60vh;
}

/* ------------------------------------------------------------------ *
 * INTRO
 * ------------------------------------------------------------------ */
.intro-banner {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(28px, 5.4vw, 52px);
  line-height: 1.05;
  letter-spacing: 0.04em;
  color: var(--green);
  text-shadow: var(--glow-green);
  margin: 6px 0 16px;
  text-align: center;
}
.intro-narrative {
  white-space: pre-wrap;
  font-size: 15px;
  color: var(--ink);
  margin-bottom: 18px;
  min-height: 2em;
}
.intro-hint-box, .granted-hint-box, .final-hint-box {
  border-left: 3px solid var(--green);
  background: rgba(51,255,102,0.05);
  padding: 12px 16px;
  border-radius: 0 4px 4px 0;
  margin-top: 8px;
}
.intro-hint, .granted-hint {
  margin: 0;
  font-size: 17px;
  color: var(--amber);
  text-shadow: var(--glow-amber);
}

/* ------------------------------------------------------------------ *
 * STAGE / MISSION
 * ------------------------------------------------------------------ */
.stage-title {
  font-size: clamp(18px, 2.8vw, 24px);
  font-weight: 700;
  color: var(--green);
  text-shadow: var(--glow-green);
  letter-spacing: 0.03em;
  margin: 2px 0 16px;
  word-break: break-word;
}
.stage-briefing-wrap { margin: 4px 0 18px; }
.briefing-bar {
  color: var(--green-faint);
  font-size: 12px;
  line-height: 1.2;
  overflow: hidden;
  white-space: nowrap;
}
.stage-briefing {
  white-space: pre-wrap;
  font-size: 15px;
  color: var(--ink);
  padding: 10px 6px;
  border-left: 1px solid var(--line-soft);
  border-right: 1px solid var(--line-soft);
  margin: 0;
}

.stage-file {
  display: flex; align-items: center; gap: 10px;
  flex-wrap: wrap;
  font-size: 14px;
  margin: 6px 0 18px;
  padding: 10px 14px;
  border: 1px dashed var(--line-soft);
  border-radius: 4px;
  background: rgba(0,0,0,0.25);
}
.file-icon { color: var(--amber); }
.file-label { color: var(--green-dim); letter-spacing: 0.08em; }
.file-dl {
  color: var(--cyan);
  border-bottom: 1px dotted var(--cyan);
}

.answer-block { margin-top: 20px; }
.stage-question {
  font-size: 16px;
  color: var(--ink);
  margin: 0 0 10px;
  font-weight: 700;
}
.answer-field { flex-wrap: wrap; }
.answer-field .prompt { white-space: nowrap; }

/* ------------------------------------------------------------------ *
 * REPL (Pyodide bonus terminal)
 * ------------------------------------------------------------------ */
#repl.repl {
  margin: 18px 0 22px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(0,0,0,0.4);
  overflow: hidden;
}
.repl-head {
  display: flex; align-items: center; justify-content: space-between;
  gap: 10px;
  padding: 8px 12px;
  background: linear-gradient(180deg, rgba(51,255,102,0.10), rgba(0,0,0,0));
  border-bottom: 1px solid var(--line-soft);
  font-size: 12px;
}
.repl-title { color: var(--green-dim); letter-spacing: 0.06em; }
.repl-status {
  color: var(--green);
  text-shadow: var(--glow-green);
  font-weight: 700;
  letter-spacing: 0.08em;
}
/* engine may write "[ OFFLINE ]" text into #repl-status */
.repl-status.warn  { color: var(--amber); text-shadow: var(--glow-amber); }
.repl-status.stderr{ color: var(--red);   text-shadow: var(--glow-red); }

.repl-out {
  margin: 0;
  padding: 12px 14px;
  min-height: 130px;
  max-height: 320px;
  overflow: auto;
  font-family: var(--font-mono);
  font-size: 13.5px;
  line-height: 1.5;
  white-space: pre-wrap;
  word-break: break-word;
  color: var(--ink);
  background:
    repeating-linear-gradient(to bottom, rgba(0,0,0,0) 0 3px, rgba(51,255,102,0.02) 3px 4px);
}

.repl-code {
  display: block;
  width: 100%;
  resize: vertical;
  min-height: 120px;
  border: 0;
  border-top: 1px dashed var(--line-soft);
  padding: 12px 14px;
  font-family: var(--font-mono);
  font-size: 14px;
  line-height: 1.5;
  color: var(--green);
  background: rgba(0,0,0,0.55);
  caret-color: var(--green);
  outline: none;
}
.repl-code::placeholder { color: var(--green-faint); }
.repl-code:focus { box-shadow: inset 0 0 0 1px var(--line); background: rgba(0,0,0,0.65); }

.repl-bar {
  display: flex; align-items: center; gap: 8px; flex-wrap: wrap;
  padding: 10px 12px;
  border-top: 1px solid var(--line-soft);
  background: rgba(0,0,0,0.3);
}
.btn--repl {
  margin-top: 0;
  padding: 7px 12px;
  font-size: 12.5px;
  text-transform: none;
  letter-spacing: 0.04em;
}
.btn--run { color: var(--amber); border-color: rgba(255,204,0,0.4); }
.btn--run:hover, .btn--run:focus-visible {
  background: rgba(255,204,0,0.14); box-shadow: var(--glow-amber); color: #fff2c2;
}
.btn--dl { color: var(--cyan); border-color: rgba(79,214,255,0.4); margin-left: auto; }
.btn--dl:hover, .btn--dl:focus-visible {
  background: rgba(79,214,255,0.14);
  box-shadow: 0 0 8px rgba(79,214,255,0.5);
  color: #dff6ff; text-decoration: none;
}

/* REPL output color classes (written by repl.js as span/line classes) */
#repl-out .stdout { color: var(--ink); }
#repl-out .stderr { color: var(--red);   text-shadow: var(--glow-red); }
#repl-out .ok     { color: var(--green); text-shadow: var(--glow-green); }
#repl-out .warn   { color: var(--amber); text-shadow: var(--glow-amber); }
#repl-out .dim    { color: var(--green-faint); }
#repl-out .prompt { color: var(--green); text-shadow: var(--glow-green); font-weight: 700; }

/* Generic phosphor color helpers (usable on any element) */
.stdout { color: var(--ink); }
.stderr { color: var(--red); }
.ok     { color: var(--green); }
.warn   { color: var(--amber); }

/* ------------------------------------------------------------------ *
 * ACCESS DENIED
 * ------------------------------------------------------------------ */
.screen--denied { text-align: center; }
.denied-core {
  padding: 40px 10px;
  color: var(--red);
}
.denied-art {
  margin: 0 auto 14px;
  font-size: clamp(10px, 2vw, 15px);
  line-height: 1.1;
  color: var(--red);
  text-shadow: var(--glow-red);
  overflow-x: auto;
}
.denied-line {
  font-family: var(--font-display);
  font-size: clamp(30px, 6vw, 56px);
  letter-spacing: 0.12em;
  margin: 6px 0;
  color: var(--red);
  text-shadow: var(--glow-red);
}
.denied-sub { color: var(--red); font-size: 15px; margin: 6px 0; letter-spacing: 0.06em; }
.denied-sub--dim { color: var(--green-faint); text-shadow: none; }

/* ------------------------------------------------------------------ *
 * ACCESS GRANTED
 * ------------------------------------------------------------------ */
.granted-art {
  margin: 0 0 8px;
  font-size: clamp(11px, 1.6vw, 14px);
  color: var(--green);
  text-shadow: var(--glow-green);
  overflow-x: auto;
}
.granted-head {
  font-family: var(--font-display);
  font-size: clamp(26px, 4.4vw, 42px);
  letter-spacing: 0.08em;
  margin: 4px 0 16px;
  color: var(--green);
  text-shadow: var(--glow-green);
}

/* ------------------------------------------------------------------ *
 * FINAL / VICTORY
 * ------------------------------------------------------------------ */
.screen--final { text-align: center; }
.panel--final { border-color: rgba(255,204,0,0.4); }
.panel--final .panel-tag { color: var(--amber); }
.final-art {
  margin: 0 auto 14px;
  font-size: clamp(9px, 1.5vw, 13px);
  line-height: 1.05;
  color: var(--green);
  text-shadow: var(--glow-green);
  overflow-x: auto;
}
.final-victory {
  white-space: pre-wrap;
  font-size: clamp(16px, 2.6vw, 20px);
  color: var(--ink);
  margin: 8px auto 20px;
  max-width: 60ch;
  min-height: 2em;
}
.final-hint-box {
  display: inline-block;
  text-align: left;
  border-left-color: var(--amber);
  background: rgba(255,204,0,0.06);
}
.final-hint {
  margin: 0;
  font-size: 18px;
  color: var(--amber);
  text-shadow: var(--glow-amber);
}
.final-foot { margin-top: 22px; font-size: 13px; }

/* ------------------------------------------------------------------ *
 * Effects: glitch / shake / cursor / pulse
 * ------------------------------------------------------------------ */
.cursor {
  display: inline-block;
  color: var(--green);
  text-shadow: var(--glow-green);
  animation: blink 1.05s steps(1) infinite;
}
@keyframes blink { 0%,49% { opacity: 1; } 50%,100% { opacity: 0; } }

@keyframes pulse {
  0%,100% { opacity: 1;   transform: scale(1); }
  50%     { opacity: 0.4; transform: scale(0.82); }
}

/* GLITCH — RGB-split text. Uses data-text="..." duplicated in ::before/::after */
.glitch { position: relative; }
.glitch::before, .glitch::after {
  content: attr(data-text);
  position: absolute; inset: 0;
  pointer-events: none;
  opacity: 0.85;
}
.glitch::before {
  color: var(--red);
  transform: translate(-2px, 0);
  clip-path: inset(0 0 55% 0);
  animation: glitch-a 2.6s infinite steps(2);
  mix-blend-mode: screen;
}
.glitch::after {
  color: var(--cyan);
  transform: translate(2px, 0);
  clip-path: inset(50% 0 0 0);
  animation: glitch-b 2.1s infinite steps(2);
  mix-blend-mode: screen;
}
@keyframes glitch-a {
  0%,92%,100% { transform: translate(-2px,0); }
  93% { transform: translate(-6px,-2px); }
  96% { transform: translate(3px,1px); }
}
@keyframes glitch-b {
  0%,90%,100% { transform: translate(2px,0); }
  91% { transform: translate(6px,2px); }
  95% { transform: translate(-3px,-1px); }
}

/* engine adds .glitch as a transient burst class on any element too */
.shake { animation: shake 0.4s cubic-bezier(.36,.07,.19,.97) both; }
@keyframes shake {
  10%,90% { transform: translateX(-2px); }
  20%,80% { transform: translateX(4px); }
  30%,50%,70% { transform: translateX(-7px); }
  40%,60% { transform: translateX(7px); }
}

/* subtle idle text-glow breathing on the whole console */
@keyframes textGlow {
  0%,100% { text-shadow: 0 0 3px rgba(51,255,102,0.5); }
  50%     { text-shadow: 0 0 6px rgba(51,255,102,0.75); }
}

/* ------------------------------------------------------------------ *
 * Responsive
 * ------------------------------------------------------------------ */
@media (max-width: 640px) {
  body { padding: 14px 8px 34px; font-size: 15px; }
  #crt.crt { border-radius: 8px; min-height: calc(100vh - 48px); }
  #hud.hud { padding: 10px 12px; }
  .hud-progress { flex-basis: 100%; justify-content: space-between; }
  .btn--inline { width: 100%; margin-top: 8px; }
  .answer-field { gap: 8px; }
}

/* ------------------------------------------------------------------ *
 * Accessibility — respect reduced motion
 * ------------------------------------------------------------------ */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
  }
  .crt-scanlines::after, .crt-flicker { display: none; }
  .cursor { opacity: 1; }
  .hud-dot { opacity: 1; transform: none; }
}