:root {
  /* design tokens — re-skin the whole site from here */
  --bg: #030405;      /* page base (near-black) */
  --surface: #070b0e; /* panels, terminal */
  --surface-2: #0b1114;/* elevated cards */
  --ink: #f3fbf1;      /* primary text (brighter mint-white) */
  --muted: #93b5b7;    /* secondary text */
  --line: #203238;     /* hairlines / borders */
  --neon: #38ffd2;     /* primary accent — bright phosphor teal */
  --neon-dim: rgba(56, 255, 210, 0.45);
  --neon2: #ff3d9c;    /* secondary accent — hot magenta */
  --warn: #ffd54a;     /* tertiary accent — amber */
  --danger: #ff4d4d;
  --radius: 6px;
  --font-display: "Orbitron", "Audiowide", system-ui, sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, monospace;
  --glow: 0 0 8px var(--neon-dim), 0 0 28px rgba(56, 255, 210, 0.18);
}

* { box-sizing: border-box; }
html { color-scheme: dark; scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--ink);
  font-family: var(--font-mono);
  background-color: var(--bg);
  background-image:
    radial-gradient(circle at 80% -10%, rgba(56, 255, 210, 0.08), transparent 45%),
    linear-gradient(rgba(56, 255, 210, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(56, 255, 210, 0.05) 1px, transparent 1px);
  background-size: 100% 100%, 3rem 3rem, 3rem 3rem;
  line-height: 1.6;
}

/* ---------- nav ---------- */
.nav {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.7rem max(1.25rem, calc((100vw - 960px) / 2));
  background: rgba(6, 8, 10, 0.85);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(6px);
}
.nav-brand {
  font-family: var(--font-display);
  font-weight: 700;
  letter-spacing: 0.12em;
  color: var(--neon);
  text-shadow: var(--glow);
}
.nav-links {
  display: flex;
  gap: 1.25rem;
  margin: 0;
  padding: 0;
  list-style: none;
}
.nav-links a {
  color: var(--muted);
  text-decoration: none;
  font-size: 0.8rem;
  letter-spacing: 0.15em;
}
.nav-links a:hover { color: var(--neon); }

/* ---------- hero ---------- */
main { width: min(960px, 100% - 2.5rem); margin: 0 auto; }
.hero { padding: clamp(3rem, 9vh, 6rem) 0 2.5rem; text-align: center; }

.eyebrow {
  margin: 0 0 1rem;
  font-size: 0.75rem;
  letter-spacing: 0.2em;
  color: var(--neon);
  text-transform: uppercase;
}
.hero-title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(2.4rem, 9vw, 5rem);
  letter-spacing: 0.04em;
  color: var(--ink);
  overflow-wrap: anywhere;
  text-shadow: 0 0 10px var(--neon-dim), 0 0 32px rgba(43, 255, 198, 0.2);
}
.hero-title::after { content: "_"; color: var(--neon); animation: blink 1.1s steps(1) infinite; }
@keyframes blink { 50% { opacity: 0; } }

.hero-sub {
  margin: 0.9rem 0 0;
  color: var(--muted);
  font-size: 1rem;
}
.log-note {
  margin: 2rem auto 0;
  max-width: 46ch;
  color: var(--muted);
  font-size: 0.82rem;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  padding: 0.7rem 0.9rem;
  opacity: 0.85;
}

/* ---------- spec strip ---------- */
.spec-strip {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  margin: 2.5rem 0;
}
.spec { background: var(--surface); padding: 0.8rem 1rem; }
.spec-k { display: block; color: var(--muted); font-size: 0.7rem; letter-spacing: 0.12em; }
.spec-v { display: block; color: var(--ink); font-size: 0.9rem; margin-top: 0.15rem; }
.spec-v.ok { color: var(--neon); }

/* ---------- lore narrator ---------- */
.lore { margin-bottom: 2.5rem; }
.lore .terminal-body { min-height: 0; max-height: 260px; overflow-y: auto; }
.lore p { margin: 0.15rem 0; color: var(--muted); font-size: 0.82rem; }
.lore p.cmd { color: var(--ink); }
.lore .lore-prompt { display: flex; align-items: center; gap: 0.5rem; margin-top: 0.4rem; }
.lore .lore-prompt .prompt { color: var(--neon); }
.lore .lore-prompt input {
  flex: 1;
  background: transparent;
  border: none;
  outline: none;
  color: var(--ink);
  font: inherit;
  font-size: 0.82rem;
  caret-color: var(--neon);
}
.lore .lore-prompt input::placeholder { color: var(--line); }

/* ---------- game section ---------- */
.game { padding: 1rem 0 3rem; }
.section-title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1.4rem, 4vw, 2rem);
  letter-spacing: 0.06em;
}
.section-intro { color: var(--muted); max-width: 60ch; }

/* terminal window */
.terminal {
  margin-top: 1.5rem;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5), inset 0 0 40px rgba(43, 255, 198, 0.03);
  overflow: hidden;
}
.terminal-bar {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.5rem 0.9rem;
  background: var(--surface-2);
  border-bottom: 1px solid var(--line);
}
.t-dots { display: inline-flex; gap: 5px; }
.t-dots i { width: 9px; height: 9px; border-radius: 50%; display: block; }
.t-dots i:nth-child(1) { background: var(--danger); opacity: 0.7; }
.t-dots i:nth-child(2) { background: var(--warn); opacity: 0.7; }
.t-dots i:nth-child(3) { background: var(--neon); opacity: 0.7; }
.t-title { color: var(--muted); font-size: 0.72rem; letter-spacing: 0.1em; }

.terminal-body { position: relative; padding: 1.1rem 1.2rem 1.3rem; min-height: 260px; }

.t-status {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem 1.4rem;
  font-size: 0.74rem;
  letter-spacing: 0.1em;
  margin-bottom: 1rem;
}
.t-status [data-el="energy"].low { color: var(--danger); }
.t-status .val { color: var(--neon); }

.code-line {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  align-items: center;
  min-height: 2.4rem;
  font-size: clamp(1.1rem, 3vw, 1.5rem);
  letter-spacing: 0.12em;
}
.chip {
  display: inline-block;
  padding: 0.15rem 0.45rem;
  color: var(--muted);
  font-family: var(--font-mono);
  border: 1px solid var(--line);
  border-radius: 4px;
  user-select: none;
}
.chip.done { color: var(--neon); border-color: var(--neon-dim); text-shadow: var(--glow); }
.chip.current { color: var(--ink); border-color: var(--neon); box-shadow: var(--glow); }
.terminal-body.shake .code-line { animation: shake 0.28s; }
@keyframes shake {
  20% { transform: translateX(-5px); } 40% { transform: translateX(5px); }
  60% { transform: translateX(-3px); } 80% { transform: translateX(3px); }
}

.hud { color: var(--muted); font-size: 0.72rem; margin-top: 0.9rem; }

.timer {
  height: 4px;
  background: var(--line);
  margin-top: 1rem;
  border-radius: 2px;
  overflow: hidden;
}
.timer-fill {
  height: 100%;
  width: 100%;
  background: var(--neon);
  box-shadow: var(--glow);
  transition: width 60ms linear;
}
.timer-fill.warn { background: var(--warn); }
.timer-fill.danger { background: var(--danger); }

.combo { margin-top: 0.6rem; min-height: 1.2em; color: var(--neon2); font-size: 0.8rem; letter-spacing: 0.1em; }

.overlay {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 1rem;
  text-align: center;
  background: rgba(6, 8, 10, 0.82);
  padding: 1.5rem;
}
.overlay h3 { margin: 0; font-family: var(--font-display); font-size: 1.4rem; letter-spacing: 0.08em; }
.overlay.granted h3 { color: var(--neon); text-shadow: var(--glow); }
.overlay.timedout h3 { color: var(--danger); }
.overlay p { margin: 0; color: var(--muted); font-size: 0.85rem; }
.overlay .big { color: var(--ink); font-size: 1.6rem; }

button.neon, .btn {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  letter-spacing: 0.15em;
  color: var(--bg);
  background: var(--neon);
  border: 1px solid var(--neon);
  border-radius: var(--radius);
  padding: 0.6rem 1.2rem;
  cursor: pointer;
  box-shadow: 0 0 16px rgba(43, 255, 198, 0.25);
  text-transform: uppercase;
}
button.neon:hover { filter: brightness(1.12); }
button.neon:focus-visible { outline: 2px solid var(--neon2); outline-offset: 2px; }

.kbd-hint { color: var(--muted); font-size: 0.72rem; }

/* ---------- easter eggs ---------- */
#tracking-val { cursor: pointer; transition: color 0.2s; }
#tracking-val.wink { color: var(--neon2); }

.breach {
  position: fixed;
  left: 50%;
  bottom: 1.25rem;
  transform: translateX(-50%) translateY(200%);
  z-index: 50;
  max-width: min(92vw, 34rem);
  font-family: var(--font-mono);
  font-size: 0.8rem;
  letter-spacing: 0.12em;
  color: var(--neon2);
  background: var(--surface-2);
  border: 1px solid var(--neon2);
  box-shadow: 0 0 24px rgba(255, 61, 156, 0.35);
  padding: 0.6rem 1.1rem;
  border-radius: var(--radius);
  transition: transform 0.32s cubic-bezier(0.2, 0.9, 0.3, 1.1);
}
.breach.show { transform: translateX(-50%) translateY(0); }

.glitching { animation: page-glitch 0.55s steps(2) 1; }
@keyframes page-glitch {
  0%, 100% { transform: none; filter: none; }
  25% { transform: translateX(-6px) skewX(-4deg); filter: hue-rotate(90deg) contrast(1.5); }
  50% { transform: translateX(5px) skewX(3deg); filter: invert(0.92) saturate(2); }
  75% { transform: translateX(-3px); filter: hue-rotate(200deg) contrast(1.3); }
}

/* ---------- CRT + micro-interactions ---------- */
@keyframes glitch-rgb {
  0%   { text-shadow: 0 0 10px var(--neon-dim), 0 0 30px rgba(56, 255, 210, 0.25), 2px 0 var(--neon2), -2px 0 var(--neon); transform: none; opacity: 1; }
  20%  { text-shadow: -3px 0 var(--neon2), 3px 0 var(--neon), 0 0 12px var(--neon-dim); transform: translate(1px, -1px) skewX(-2deg); opacity: 0.85; }
  35%  { text-shadow: 3px 0 var(--neon), -3px 0 var(--neon2); transform: translate(-1px, 1px); opacity: 1; }
  60%  { text-shadow: -2px 0 var(--neon2), 4px 0 var(--neon), 0 0 14px var(--neon-dim); transform: translate(2px, 0) skewX(3deg); opacity: 0.9; }
  75%  { text-shadow: 2px 0 var(--neon), -1px 0 var(--neon2); transform: translate(-1px, 1px) skewX(-1deg); opacity: 1; }
  100% { text-shadow: 0 0 10px var(--neon-dim), 0 0 32px rgba(56, 255, 210, 0.2); transform: none; opacity: 1; }
}
.hero-title { animation: glitch-rgb 0.75s steps(2, end) 0.55s 1; }

/* CRT scanlines + barely-there flicker */
body::after {
  content: "";
  position: fixed;
  inset: 0;
  z-index: 4;
  pointer-events: none;
  background: repeating-linear-gradient(0deg, rgba(0, 0, 0, 0.16) 0 1px, transparent 1px 3px);
  animation: crt-flicker 6s steps(1) infinite;
}
@keyframes crt-flicker {
  0%, 100% { opacity: 0.55; }
  92% { opacity: 0.55; }
  93% { opacity: 0.4; }
  94% { opacity: 0.6; }
  95% { opacity: 0.5; }
}

/* neon hover micro-interactions */
.nav-links a { transition: color 0.2s, text-shadow 0.2s; }
.nav-links a:hover { text-shadow: var(--glow); }
.nav-links a:focus-visible { outline: 1px solid var(--neon2); outline-offset: 4px; }

.btn, button.neon, .mute {
  transition: transform 0.15s ease, box-shadow 0.2s ease, filter 0.2s ease, color 0.2s;
}
.btn:hover, button.neon:hover { transform: translateY(-1px); box-shadow: var(--glow), 0 0 22px rgba(56, 255, 210, 0.35); }
.btn:focus-visible, .mute:focus-visible, .diff-row .btn:focus-visible { outline: 2px solid var(--neon2); outline-offset: 2px; }

.spec { transition: background 0.2s, box-shadow 0.2s; }
.spec:hover { background: var(--surface-2); box-shadow: inset 0 0 0 1px var(--neon-dim); }

.chip { transition: color 0.15s; }

/* ---------- game depth (difficulty / leaderboard / sound) ---------- */
.terminal-bar { position: relative; }
.mute {
  margin-left: auto;
  font: inherit;
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  color: var(--muted);
  background: transparent;
  border: 1px solid var(--line);
  border-radius: 4px;
  padding: 0.15rem 0.5rem;
  cursor: pointer;
}
.mute:hover { color: var(--neon); border-color: var(--neon-dim); }
.mute.off { opacity: 0.6; text-decoration: line-through; }

.diff-row { display: flex; gap: 0.5rem; flex-wrap: wrap; justify-content: center; }
.diff-row .btn {
  font-size: 0.72rem;
  padding: 0.45rem 0.85rem;
  letter-spacing: 0.12em;
  color: var(--muted);
  background: transparent;
  border: 1px solid var(--line);
  box-shadow: none;
  text-transform: uppercase;
}
.diff-row .btn.on {
  color: var(--bg);
  background: var(--neon);
  border-color: var(--neon);
  box-shadow: 0 0 12px rgba(56, 255, 210, 0.3);
}

.lb { font-size: 0.75rem; color: var(--muted); letter-spacing: 0.08em; text-align: left; }
.lb-title { color: var(--neon); text-align: center; margin-bottom: 0.35rem; }
.lb-row { display: flex; justify-content: space-between; gap: 1rem; padding: 0.04rem 0; }
.lb-empty { opacity: 0.6; text-align: center; }
.lb-rank { color: var(--neon2); }

/* ---------- footer ---------- */
.footer {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1rem;
  justify-content: space-between;
  padding: 1.1rem max(1.25rem, calc((100vw - 960px) / 2));
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 0.78rem;
}
.footer-tag { letter-spacing: 0.08em; }

@media (max-width: 520px) {
  .hero-title {
    font-size: clamp(1.7rem, 8.4vw, 3rem);
    letter-spacing: 0.02em;
  }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation: none !important; transition: none !important; }
}