:root {
  color-scheme: dark;
  --black: #030506;
  --panel: rgba(7, 13, 15, 0.91);
  --green: #8cff36;
  --cyan: #25edf5;
  --magenta: #ff3da6;
  --white: #eefcf8;
  --muted: #8ba29d;
  --line: rgba(37, 237, 245, 0.24);
}

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

html {
  min-width: 320px;
  min-height: 100%;
  background: var(--black);
}

body {
  min-width: 320px;
  min-height: 100vh;
  min-height: 100svh;
  margin: 0;
  overflow-x: hidden;
  color: var(--white);
  background:
    radial-gradient(circle at 50% 115%, rgba(37, 237, 245, 0.17), transparent 43%),
    radial-gradient(circle at 8% 16%, rgba(255, 61, 166, 0.08), transparent 28rem),
    #030506;
  font-family: Consolas, "Cascadia Mono", "Courier New", monospace;
}

a {
  color: inherit;
}

.world-grid {
  position: fixed;
  right: -20vw;
  bottom: -34vh;
  left: -20vw;
  height: 80vh;
  border-top: 1px solid rgba(37, 237, 245, 0.34);
  background-image:
    linear-gradient(rgba(37, 237, 245, 0.18) 1px, transparent 1px),
    linear-gradient(90deg, rgba(37, 237, 245, 0.18) 1px, transparent 1px);
  background-size: 4rem 4rem;
  opacity: 0.42;
  pointer-events: none;
  transform: perspective(30rem) rotateX(62deg);
  transform-origin: center top;
}

.scanlines {
  position: fixed;
  z-index: 5;
  inset: 0;
  background: repeating-linear-gradient(to bottom, transparent 0 3px, rgba(0, 0, 0, 0.13) 3px 4px);
  opacity: 0.42;
  pointer-events: none;
}

.system-bar {
  position: relative;
  z-index: 2;
  display: grid;
  min-height: 3.5rem;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 1rem;
  padding: 0.75rem clamp(1rem, 4vw, 3.5rem);
  border-bottom: 1px solid rgba(37, 237, 245, 0.16);
  color: var(--muted);
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.system-id {
  color: var(--cyan);
}

.system-state {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
}

.system-state i {
  width: 0.55rem;
  height: 0.55rem;
  border-radius: 50%;
  background: var(--green);
  box-shadow: 0 0 1rem rgba(140, 255, 54, 0.75);
  animation: status 2.4s ease-in-out infinite;
}

.system-clock {
  justify-self: end;
}

.arena {
  position: relative;
  z-index: 1;
  display: grid;
  min-height: calc(100vh - 7.5rem);
  min-height: calc(100svh - 7.5rem);
  padding: clamp(1rem, 4vw, 4rem);
  place-items: center;
}

.console {
  position: relative;
  display: grid;
  width: min(72rem, 100%);
  grid-template-columns: minmax(18rem, 0.82fr) minmax(23rem, 1.18fr);
  align-items: center;
  gap: clamp(2rem, 7vw, 7rem);
  padding: clamp(2rem, 5vw, 5.5rem);
  border: 1px solid var(--line);
  background:
    linear-gradient(115deg, rgba(37, 237, 245, 0.035), transparent 45%),
    var(--panel);
  box-shadow:
    0 2.8rem 7rem rgba(0, 0, 0, 0.6),
    inset 0 0 5rem rgba(37, 237, 245, 0.025);
  clip-path: polygon(0 1.5rem, 1.5rem 0, calc(100% - 4.5rem) 0, calc(100% - 3.6rem) 0.9rem, 100% 0.9rem, 100% calc(100% - 1.5rem), calc(100% - 1.5rem) 100%, 4.5rem 100%, 3.5rem calc(100% - 1rem), 0 calc(100% - 1rem));
}

.console::before {
  position: absolute;
  top: 0;
  right: 12%;
  width: min(16rem, 30%);
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--magenta));
  box-shadow: 0 0 1.2rem rgba(255, 61, 166, 0.7);
  content: "";
}

.corner {
  position: absolute;
  width: 1rem;
  height: 1rem;
  border-color: var(--cyan);
  pointer-events: none;
}

.corner-top-left { top: 0.7rem; left: 0.7rem; border-top: 2px solid; border-left: 2px solid; }
.corner-top-right { top: 1.6rem; right: 0.7rem; border-top: 2px solid; border-right: 2px solid; }
.corner-bottom-left { bottom: 1.7rem; left: 0.7rem; border-bottom: 2px solid; border-left: 2px solid; }
.corner-bottom-right { right: 0.7rem; bottom: 0.7rem; border-right: 2px solid; border-bottom: 2px solid; }

.player-card {
  position: relative;
  width: min(21rem, 70vw);
  aspect-ratio: 0.9;
  margin-inline: auto;
  border: 1px solid rgba(140, 255, 54, 0.3);
  background:
    linear-gradient(90deg, rgba(140, 255, 54, 0.035) 1px, transparent 1px),
    linear-gradient(rgba(140, 255, 54, 0.035) 1px, transparent 1px),
    rgba(2, 8, 8, 0.7);
  background-size: 1.3rem 1.3rem;
  box-shadow: inset 0 0 3rem rgba(140, 255, 54, 0.04);
  clip-path: polygon(0 0, calc(100% - 2.2rem) 0, 100% 2.2rem, 100% 100%, 2.2rem 100%, 0 calc(100% - 2.2rem));
}

.player-card::before,
.player-card::after {
  position: absolute;
  width: 3.5rem;
  height: 0.35rem;
  background: var(--green);
  box-shadow: 0 0 1.2rem rgba(140, 255, 54, 0.55);
  content: "";
}

.player-card::before {
  top: 0;
  left: 0;
}

.player-card::after {
  right: 0;
  bottom: 0;
}

.player-label {
  position: absolute;
  top: 1rem;
  left: 1rem;
  color: var(--green);
  font-size: 0.66rem;
  font-weight: 800;
  letter-spacing: 0.2em;
  text-transform: uppercase;
}

.core {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 62%;
  aspect-ratio: 1;
  border: 1px solid rgba(37, 237, 245, 0.16);
  border-radius: 50%;
  background:
    repeating-conic-gradient(from 18deg, rgba(37, 237, 245, 0.18) 0 2deg, transparent 2deg 19deg),
    radial-gradient(circle, transparent 0 38%, rgba(37, 237, 245, 0.04) 39% 55%, transparent 56%);
  transform: translate(-50%, -50%);
}

.core::before,
.core::after,
.core-ring,
.core-dot {
  position: absolute;
  border-radius: 50%;
  content: "";
}

.core::before {
  inset: 15%;
  border-top: 2px solid var(--green);
  border-right: 2px solid transparent;
  border-bottom: 1px solid rgba(140, 255, 54, 0.2);
  animation: spin 8s linear infinite;
}

.core::after {
  inset: 30%;
  border: 1px dashed var(--magenta);
  animation: spin 13s linear infinite reverse;
}

.core-ring-one {
  inset: 6%;
  border-right: 1px solid var(--cyan);
  border-left: 1px solid rgba(37, 237, 245, 0.1);
  transform: rotate(35deg);
}

.core-ring-two {
  inset: 23%;
  border-top: 1px solid rgba(140, 255, 54, 0.48);
  border-bottom: 1px solid rgba(140, 255, 54, 0.16);
  transform: rotate(-25deg);
}

.core-dot {
  inset: 41%;
  background: var(--green);
  box-shadow:
    0 0 1rem rgba(140, 255, 54, 0.8),
    0 0 3rem rgba(37, 237, 245, 0.45);
  animation: charge 2.8s ease-in-out infinite;
}

.power-row {
  position: absolute;
  right: 1rem;
  bottom: 1rem;
  left: 1rem;
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 0.35rem;
}

.power-row span {
  height: 0.22rem;
  background: var(--green);
  box-shadow: 0 0 0.5rem rgba(140, 255, 54, 0.35);
}

.power-row span:nth-child(4),
.power-row span:nth-child(5) {
  background: rgba(140, 255, 54, 0.16);
  box-shadow: none;
}

.briefing {
  min-width: 0;
}

.eyebrow {
  margin: 0 0 1rem;
  color: var(--cyan);
  font-size: 0.73rem;
  font-weight: 800;
  letter-spacing: 0.23em;
  line-height: 1.5;
  text-transform: uppercase;
}

h1 {
  margin: 0;
  font-family: "Segoe UI", Arial, sans-serif;
  font-size: clamp(3rem, 7vw, 6.8rem);
  font-weight: 900;
  letter-spacing: -0.055em;
  line-height: 0.88;
  text-transform: uppercase;
}

h1 span {
  position: relative;
  color: var(--green);
  text-shadow: 0 0 1.4rem rgba(140, 255, 54, 0.22);
}

h1 span::after {
  position: absolute;
  right: 0.04em;
  bottom: 0.04em;
  left: 0.04em;
  height: 0.08em;
  background: var(--magenta);
  content: "";
  opacity: 0.7;
  transform: skewX(-28deg);
}

.intro {
  margin: 1.8rem 0 0;
  color: #a9bbb7;
  font-family: "Segoe UI", Arial, sans-serif;
  font-size: clamp(1rem, 1.5vw, 1.15rem);
  line-height: 1.7;
}

.mission-status {
  margin-top: 2rem;
  padding: 1rem 1.15rem;
  border-left: 2px solid var(--cyan);
  background: rgba(37, 237, 245, 0.045);
  color: #c7d7d3;
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  line-height: 1.7;
  text-transform: uppercase;
}

.mission-status p {
  margin: 0;
}

.prompt {
  color: var(--green);
}

.cursor {
  display: inline-block;
  width: 0.48rem;
  height: 0.9rem;
  margin-left: 0.4rem;
  background: var(--green);
  vertical-align: -0.1rem;
  animation: blink 1.1s steps(1) infinite;
}

.fair-play {
  margin: 1.4rem 0 0;
  color: var(--muted);
  font-size: 0.65rem;
  font-weight: 800;
  letter-spacing: 0.13em;
  line-height: 1.7;
  text-transform: uppercase;
}

.fair-play span {
  color: var(--magenta);
}

footer {
  position: relative;
  z-index: 2;
  display: flex;
  min-height: 4rem;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.75rem clamp(1rem, 4vw, 3.5rem);
  border-top: 1px solid rgba(37, 237, 245, 0.12);
  color: #63736f;
  font-size: 0.62rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.error-stage {
  position: relative;
  z-index: 1;
  display: grid;
  min-height: 100vh;
  min-height: 100svh;
  padding: 1rem;
  place-items: center;
}

.error-console {
  width: min(42rem, 100%);
  padding: clamp(2rem, 7vw, 4rem);
  border: 1px solid rgba(255, 61, 166, 0.42);
  background: var(--panel);
  box-shadow: 0 2.5rem 7rem rgba(0, 0, 0, 0.65);
  clip-path: polygon(0 1.5rem, 1.5rem 0, 100% 0, 100% calc(100% - 1.5rem), calc(100% - 1.5rem) 100%, 0 100%);
  text-align: left;
}

.error-code {
  margin: 0 0 0.8rem;
  color: var(--muted);
  font-size: 0.74rem;
  font-weight: 800;
  letter-spacing: 0.2em;
  text-transform: uppercase;
}

.error-code span {
  color: var(--magenta);
}

.error-console h1 {
  color: var(--white);
  font-size: clamp(2.3rem, 9vw, 5.2rem);
  line-height: 0.92;
}

.error-console > p:not(.error-code) {
  max-width: 35rem;
  margin: 1.5rem 0 2rem;
  color: #a9bbb7;
  font-family: "Segoe UI", Arial, sans-serif;
  line-height: 1.7;
}

.home-link {
  display: inline-block;
  padding: 0.78rem 1rem;
  border: 1px solid var(--green);
  color: var(--green);
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.09em;
  text-decoration: none;
  text-transform: uppercase;
  transition: background-color 140ms ease, color 140ms ease, box-shadow 140ms ease;
}

.home-link:hover {
  color: #071005;
  background: var(--green);
  box-shadow: 0 0 1.5rem rgba(140, 255, 54, 0.28);
}

.home-link:focus-visible {
  outline: 3px solid var(--cyan);
  outline-offset: 4px;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

@keyframes charge {
  50% { opacity: 0.45; transform: scale(0.72); }
}

@keyframes blink {
  50% { opacity: 0; }
}

@keyframes status {
  50% { opacity: 0.45; }
}

@media (max-width: 800px) {
  .system-bar {
    grid-template-columns: 1fr 1fr;
  }

  .system-state {
    justify-self: end;
  }

  .system-clock {
    display: none;
  }

  .arena {
    padding: 1rem;
  }

  .console {
    grid-template-columns: 1fr;
    gap: 2.4rem;
    padding: 2.5rem 1.35rem 3rem;
  }

  .player-card {
    width: min(15rem, 70vw);
  }
}

@media (max-width: 470px) {
  .wide-only {
    display: none;
  }

  h1 {
    font-size: clamp(2.9rem, 18vw, 4.6rem);
  }

  .mission-status {
    padding-inline: 0.8rem;
    font-size: 0.69rem;
  }

  footer {
    justify-content: center;
    text-align: center;
  }

  footer span:first-child,
  footer span[aria-hidden="true"] {
    display: none;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}