:root {
  --bg: #061426;
  --panel: #0b2845;
  --panel-deep: #071b31;
  --line: #2d73ba;
  --line-soft: rgba(68, 156, 236, 0.45);
  --text: #d9ebff;
  --muted: #7fb4e6;
  --green: #81ff95;
  --red: #ff556d;
  --yellow: #ffe87a;
}

* {
  box-sizing: border-box;
}

[hidden] {
  display: none !important;
}

html,
body {
  height: 100%;
}

body {
  margin: 0;
  overflow: hidden;
  background:
    radial-gradient(circle at center, rgba(24, 96, 148, 0.25), transparent 55%),
    linear-gradient(180deg, #030811 0%, var(--bg) 55%, #02070d 100%);
  color: var(--text);
  font-family: "Courier New", Consolas, monospace;
  letter-spacing: 0.08em;
}

button,
input {
  font: inherit;
}

.cabinet {
  min-height: 100%;
  display: grid;
  place-items: center;
  padding: clamp(10px, 2vw, 28px);
}

.terminal {
  width: min(100vw - 20px, 1440px);
  aspect-ratio: 16 / 9;
  min-height: 520px;
  max-height: calc(100vh - 20px);
  position: relative;
  display: grid;
  grid-template-rows: auto auto auto 1fr auto auto;
  gap: clamp(8px, 1.2vw, 16px);
  padding: clamp(12px, 2vw, 28px);
  border: 2px solid rgba(41, 126, 200, 0.65);
  background:
    linear-gradient(rgba(7, 30, 53, 0.88), rgba(6, 24, 43, 0.96)),
    repeating-linear-gradient(0deg, rgba(255, 255, 255, 0.035) 0 1px, transparent 1px 4px);
  box-shadow:
    0 0 0 1px rgba(125, 190, 255, 0.16) inset,
    0 0 45px rgba(37, 125, 207, 0.28),
    0 20px 60px rgba(0, 0, 0, 0.45);
  text-transform: uppercase;
  isolation: isolate;
}

.terminal::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: radial-gradient(circle at center, transparent 58%, rgba(0, 0, 0, 0.35));
  z-index: 3;
}

.hud,
.title-row,
.control-row,
.footer-noise {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  position: relative;
  z-index: 4;
}

.hud,
.control-row,
.footer-noise {
  color: var(--muted);
  font-size: clamp(0.56rem, 1vw, 0.82rem);
  font-weight: 700;
}

.system,
.badges,
.scoreline,
.hearts {
  display: flex;
  align-items: center;
  gap: 10px;
}

.status-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: #44ff7a;
  box-shadow: 0 0 10px #44ff7a;
}

.badges span,
.live {
  border: 1px solid rgba(84, 155, 222, 0.35);
  padding: 2px 8px;
  background: rgba(0, 0, 0, 0.18);
}

.badges .live {
  color: var(--green);
  border-color: rgba(129, 255, 149, 0.45);
}

h1 {
  margin: 0;
  color: #edf6ff;
  font-size: clamp(1.25rem, 3vw, 3.15rem);
  line-height: 1;
  text-shadow: 2px 0 rgba(255, 255, 255, 0.25), 0 0 16px rgba(93, 166, 255, 0.55);
}

.scoreline {
  color: #dbeaff;
  font-size: clamp(1rem, 2vw, 2rem);
  font-weight: 800;
}

.heart {
  color: #ff7e91;
  text-shadow: 0 0 10px rgba(255, 85, 109, 0.7);
}

.heart.empty {
  opacity: 0.28;
  color: #7397b9;
  text-shadow: none;
}

.control-row {
  justify-content: flex-end;
  gap: 10px;
}

.control-row input[type="range"] {
  width: min(210px, 28vw);
  accent-color: var(--green);
  cursor: pointer;
}

.control-row output {
  min-width: 4ch;
  color: var(--green);
}

.playfield {
  position: relative;
  overflow: hidden;
  min-height: 0;
  border: 2px solid var(--line-soft);
  background:
    radial-gradient(circle at 50% 35%, rgba(22, 99, 151, 0.22), transparent 45%),
    linear-gradient(180deg, rgba(7, 31, 56, 0.88), rgba(4, 18, 32, 0.94));
}

.scanlines {
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: repeating-linear-gradient(180deg, rgba(255, 255, 255, 0.04) 0 1px, transparent 1px 6px);
  mix-blend-mode: screen;
  opacity: 0.32;
  z-index: 2;
}

.word {
  position: absolute;
  top: 0;
  left: 0;
  min-width: 6ch;
  padding: 0.42em 0.7em;
  border: 2px solid rgba(94, 166, 239, 0.7);
  background: rgba(7, 36, 65, 0.82);
  color: #f0f7ff;
  font-size: clamp(0.78rem, 1.55vw, 1.35rem);
  font-weight: 800;
  text-align: center;
  text-shadow: 0 0 12px rgba(191, 223, 255, 0.55);
  box-shadow: 0 0 14px rgba(63, 145, 224, 0.3) inset;
  will-change: transform;
  z-index: 1;
}

.word.hot {
  border-color: rgba(255, 232, 122, 0.9);
  color: var(--yellow);
}

.word.hit {
  animation: pop 180ms ease-out forwards;
}

.command-row {
  position: relative;
  z-index: 4;
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: center;
  gap: clamp(8px, 1.6vw, 22px);
}

#answerInput {
  width: 100%;
  height: clamp(52px, 8vh, 78px);
  border: 4px solid var(--green);
  outline: 0;
  padding: 0 0.8em;
  background: rgba(0, 9, 16, 0.82);
  color: #f2fff4;
  caret-color: var(--green);
  font-size: clamp(1rem, 2.3vw, 2.2rem);
  font-weight: 800;
  text-transform: uppercase;
  box-shadow: 0 0 20px rgba(129, 255, 149, 0.26), 0 0 0 1px rgba(255, 255, 255, 0.12) inset;
}

#answerInput.error {
  border-color: var(--red);
  color: #fff;
  animation: inputError 260ms ease-out;
}

.send-hint {
  color: #bfdcff;
  font-size: clamp(0.72rem, 1.35vw, 1.2rem);
  font-weight: 800;
  white-space: nowrap;
}

.state-overlay {
  position: absolute;
  inset: 0;
  z-index: 5;
  display: grid;
  place-content: center;
  justify-items: center;
  gap: 18px;
  background: rgba(3, 10, 19, 0.76);
  text-align: center;
}

.state-overlay.fatal {
  background:
    radial-gradient(circle at center, rgba(22, 76, 118, 0.72), rgba(5, 22, 39, 0.94) 68%),
    linear-gradient(180deg, rgba(10, 45, 75, 0.88), rgba(4, 20, 36, 0.96));
}

.state-overlay.reboot {
  place-content: start;
  justify-items: start;
  padding: clamp(18px, 3.5vw, 46px);
  background:
    linear-gradient(90deg, rgba(0, 0, 0, 0.92), rgba(0, 0, 0, 0.78)),
    repeating-linear-gradient(90deg, rgba(255, 255, 255, 0.04) 0 22px, transparent 22px 66px);
  text-align: left;
}

.state-overlay.ready {
  background:
    radial-gradient(circle at center, rgba(30, 99, 148, 0.28), transparent 52%),
    linear-gradient(180deg, rgba(7, 31, 56, 0.88), rgba(4, 18, 32, 0.94));
}

.state-overlay strong {
  color: var(--red);
  font-size: clamp(2.2rem, 7vw, 6rem);
  text-shadow: 0 0 18px rgba(255, 85, 109, 0.9);
}

.state-overlay.reboot strong {
  color: var(--green);
  font-size: clamp(1.3rem, 4vw, 3rem);
  letter-spacing: 0.16em;
  text-shadow: 0 0 14px rgba(129, 255, 149, 0.8);
}

.state-overlay.ready strong {
  color: #f4fbff;
  font-size: clamp(2.4rem, 8vw, 6.5rem);
  letter-spacing: 0.12em;
  text-shadow: 0 0 16px rgba(225, 243, 255, 0.95);
}

.state-overlay p {
  margin: 0;
  color: var(--green);
  font-size: clamp(0.88rem, 1.6vw, 1.35rem);
  font-weight: 800;
}

.boot-log {
  display: grid;
  gap: 8px;
  margin-top: clamp(8px, 1.5vw, 18px);
  color: #eef6ff;
  font-size: clamp(0.74rem, 1.45vw, 1.22rem);
  font-weight: 800;
  line-height: 1.25;
  text-shadow: 0 0 8px rgba(220, 240, 255, 0.45);
}

.boot-log div::before {
  content: "> ";
  color: #dcecff;
}

.boot-log .ok {
  color: var(--green);
}

.ready-loader {
  width: min(86%, 920px);
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  align-items: center;
  gap: 16px;
  margin-top: clamp(52px, 14vw, 140px);
  color: #eef6ff;
  font-size: clamp(0.8rem, 1.6vw, 1.35rem);
  font-weight: 800;
}

.ready-bar {
  height: clamp(12px, 1.7vw, 20px);
  border: 2px solid rgba(238, 246, 255, 0.92);
  background: rgba(0, 8, 15, 0.72);
  box-shadow: 0 0 12px rgba(238, 246, 255, 0.3);
}

.ready-bar i {
  display: block;
  width: 0%;
  height: 100%;
  background: #eef6ff;
  box-shadow: 0 0 18px rgba(238, 246, 255, 0.9);
}

.ready-loader.loading .ready-bar i {
  animation: readyFill 2s linear forwards;
}

.state-overlay button {
  border: 2px solid var(--green);
  background: rgba(4, 28, 15, 0.9);
  color: var(--green);
  padding: 0.75em 1.2em;
  cursor: pointer;
}

.state-overlay.fatal button {
  min-width: clamp(190px, 28vw, 310px);
  padding: 0.42em 1.35em 0.48em;
  border: 3px solid rgba(235, 247, 255, 0.94);
  border-radius: 4px;
  background: rgba(8, 31, 54, 0.28);
  color: #f4fbff;
  font-size: clamp(1rem, 2.4vw, 1.75rem);
  font-weight: 900;
  line-height: 1;
  letter-spacing: 0.08em;
  text-shadow: 0 0 10px rgba(235, 247, 255, 0.62);
  box-shadow:
    0 0 0 1px rgba(235, 247, 255, 0.18) inset,
    0 0 12px rgba(150, 212, 255, 0.22);
}

.footer-noise {
  opacity: 0.78;
}

.flash {
  animation: flashRed 300ms ease-out;
}

.shake {
  animation: shake 300ms ease-out;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

@keyframes inputError {
  0%, 100% { transform: translateX(0); }
  25% { transform: translateX(-10px); }
  50% { transform: translateX(9px); }
  75% { transform: translateX(-5px); }
}

@keyframes flashRed {
  0% { box-shadow: 0 0 0 rgba(255, 85, 109, 0) inset; }
  24% { box-shadow: 0 0 0 999px rgba(255, 85, 109, 0.18) inset; }
  100% { box-shadow: 0 0 0 rgba(255, 85, 109, 0) inset; }
}

@keyframes shake {
  0%, 100% { transform: translateX(0); }
  20% { transform: translateX(-9px); }
  40% { transform: translateX(8px); }
  60% { transform: translateX(-6px); }
  80% { transform: translateX(4px); }
}

@keyframes pop {
  to {
    opacity: 0;
    transform: translate(var(--x, 0), var(--y, 0)) scale(1.18);
    filter: brightness(1.8);
  }
}

@keyframes readyFill {
  to { width: 100%; }
}

@media (max-width: 760px) {
  body {
    overflow: auto;
  }

  .cabinet {
    align-items: start;
  }

  .terminal {
    min-height: min(720px, calc(100vh - 20px));
    aspect-ratio: auto;
  }

  .title-row {
    align-items: flex-start;
  }

  .command-row {
    grid-template-columns: 1fr;
  }

  .send-hint {
    justify-self: end;
  }
}