:root {
  --bg: #020607;
  --panel: rgba(4, 12, 11, 0.78);
  --line: rgba(114, 255, 174, 0.18);
  --line-strong: rgba(114, 255, 174, 0.55);
  --green: #78ffad;
  --green-soft: #b9ffd4;
  --text: #e6f1eb;
  --muted: #71827a;
  --mono: "IBM Plex Mono", "SFMono-Regular", Consolas, monospace;
  --sans: "Noto Sans SC", "PingFang SC", sans-serif;
  --pointer-x: 0px;
  --pointer-y: 0px;
  --radar-x: 0px;
  --radar-y: 0px;
  --tilt-x: 0deg;
  --tilt-y: 0deg;
  --cover-shift-x: 0px;
  --cover-shift-y: 0px;
}

* { box-sizing: border-box; }
html { color-scheme: dark; background: var(--bg); }
body {
  margin: 0;
  min-width: 320px;
  min-height: 100vh;
  overflow-x: hidden;
  color: var(--text);
  background:
    radial-gradient(circle at 50% 43%, rgba(26, 94, 57, 0.08), transparent 38rem),
    #020607;
  font-family: var(--sans);
  -webkit-font-smoothing: antialiased;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -2;
  pointer-events: none;
  opacity: .38;
  background-image:
    radial-gradient(circle, rgba(120, 255, 173, .8) 0 1px, transparent 1.5px),
    radial-gradient(circle, rgba(120, 255, 173, .42) 0 1px, transparent 1.5px);
  background-position: 4vw 12vh, 17vw 32vh;
  background-size: 31vw 37vh, 43vw 29vh;
  animation: stars-drift 45s linear infinite;
}

body::after {
  content: "";
  position: fixed;
  inset: 0;
  z-index: 20;
  pointer-events: none;
  opacity: .12;
  background: repeating-linear-gradient(0deg, transparent 0 3px, rgba(189, 255, 216, .12) 4px);
  mix-blend-mode: soft-light;
}

a { color: inherit; }
button, input { font: inherit; }
button { color: inherit; }
.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;
}

.skip-link {
  position: fixed;
  top: -4rem;
  left: 1rem;
  z-index: 99;
  padding: .65rem 1rem;
  color: #001a0b;
  background: var(--green);
}
.skip-link:focus { top: 1rem; }

.site-header {
  position: fixed;
  inset: 0 0 auto;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 3.7rem;
  padding: 0 clamp(1rem, 2.5vw, 2.5rem);
  font: 600 .61rem/1 var(--mono);
  letter-spacing: .24em;
  text-transform: uppercase;
  animation: interface-enter .8s .08s cubic-bezier(.2, .8, .2, 1) both;
}
.brand {
  color: #a5b5ad;
  text-decoration: none;
}
.brand strong { color: var(--green); font-weight: 600; }
.header-note { color: #526159; }

.radar {
  position: fixed;
  z-index: 0;
  pointer-events: none;
  width: min(64vw, 54rem);
  aspect-ratio: 1;
  left: 50%;
  top: 50%;
  translate: -50% -45%;
  border: 1px solid rgba(120, 255, 173, .24);
  border-radius: 50%;
  box-shadow: 0 0 90px rgba(55, 238, 126, .04);
  opacity: .84;
  transform: translate(var(--radar-x), var(--radar-y));
  transition: transform 1.2s cubic-bezier(.2, .8, .2, 1);
  animation: radar-arrive 1.4s cubic-bezier(.16, 1, .3, 1) both;
}
.arcade-fx {
  position: fixed;
  inset: 0;
  z-index: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  opacity: .42;
  mix-blend-mode: screen;
  filter: drop-shadow(0 0 4px rgba(120, 255, 173, .35));
}
.radar::before,
.radar::after {
  content: "";
  position: absolute;
  border: 1px solid rgba(120, 255, 173, .1);
  border-radius: inherit;
}
.radar::before { inset: 17%; }
.radar::after { inset: 34%; }
.radar-grid {
  position: absolute;
  inset: 0;
  border-radius: 50%;
  overflow: hidden;
  background:
    linear-gradient(90deg, transparent 49.9%, rgba(120, 255, 173, .07) 50%, transparent 50.1%),
    linear-gradient(transparent 49.9%, rgba(120, 255, 173, .07) 50%, transparent 50.1%);
}
.radar-sweep {
  position: absolute;
  inset: 50% 50% 0 0;
  transform-origin: 100% 0;
  background: conic-gradient(from 270deg at 100% 0, rgba(120, 255, 173, .12), transparent 30deg);
  animation: sweep 16s linear infinite;
}
.radar-core {
  position: absolute;
  left: 50%;
  top: 50%;
  width: 4.2rem;
  aspect-ratio: 1;
  translate: -50% -50%;
  border: 1px solid var(--line-strong);
  border-radius: 50%;
  box-shadow: 0 0 25px rgba(120, 255, 173, .13), inset 0 0 20px rgba(120, 255, 173, .08);
}
.radar-core::before,
.radar-core::after {
  content: "";
  position: absolute;
  border: 1px solid rgba(120, 255, 173, .42);
  border-radius: 50%;
}
.radar-core::before { width: 1rem; height: 1rem; left: 1rem; top: 1rem; }
.radar-core::after { width: .65rem; height: .65rem; right: .85rem; bottom: .85rem; }
.radar-blip {
  position: absolute;
  width: .32rem;
  height: .32rem;
  border-radius: 50%;
  background: var(--green);
  box-shadow: 0 0 .65rem var(--green);
  animation: blip 3.8s ease-out infinite;
}
.radar-blip::after {
  content: "";
  position: absolute;
  inset: -.4rem;
  border: 1px solid var(--green);
  border-radius: inherit;
  animation: blip-ring 3.8s ease-out infinite;
}
.radar-blip.b1 { top: 23%; left: 64%; animation-delay: -.8s; }
.radar-blip.b1::after { animation-delay: -.8s; }
.radar-blip.b2 { top: 69%; left: 27%; animation-delay: -2.1s; }
.radar-blip.b2::after { animation-delay: -2.1s; }
.radar-blip.b3 { top: 43%; left: 82%; animation-delay: -3s; }
.radar-blip.b3::after { animation-delay: -3s; }
.radar-ship {
  position: absolute;
  inset: 8%;
  animation: orbit 26s linear infinite;
}
.radar-ship::before {
  content: "▸";
  position: absolute;
  top: -.45rem;
  left: 50%;
  color: var(--green);
  font: .72rem/1 var(--mono);
  filter: drop-shadow(0 0 .35rem rgba(120, 255, 173, .7));
  transform: rotate(90deg);
}

.arcade-shell {
  position: relative;
  z-index: 1;
  width: min(75rem, calc(100% - 2rem));
  min-height: 100svh;
  margin: 0 auto;
  padding: clamp(5.5rem, 12vh, 8rem) 0 5rem;
  display: grid;
  align-content: center;
}

.search-row {
  display: grid;
  grid-template-columns: 4.5rem 1fr;
  align-items: center;
  border-bottom: 1px solid var(--line);
  animation: interface-enter .75s .18s cubic-bezier(.2, .8, .2, 1) both;
}
.search-row::after {
  content: "";
  grid-column: 1 / -1;
  width: 0;
  height: 1px;
  margin-bottom: -1px;
  background: var(--green);
  box-shadow: 0 0 .8rem rgba(120, 255, 173, .55);
  transition: width .45s cubic-bezier(.2, .8, .2, 1);
}
.search-row:focus-within::after { width: 100%; }
.search-label {
  font: 500 .54rem/1 var(--mono);
  color: var(--muted);
  letter-spacing: .18em;
  text-transform: uppercase;
}
.search-input {
  width: 100%;
  padding: .75rem 0;
  border: 0;
  outline: 0;
  color: var(--green-soft);
  background: transparent;
  font: 400 .78rem/1.4 var(--mono);
}
.search-input::placeholder { color: #445149; }

.arcade-grid {
  display: grid;
  grid-template-columns: minmax(15rem, .9fr) minmax(20rem, 1.1fr);
  gap: clamp(2rem, 5vw, 5rem);
  align-items: start;
  margin-top: 1.2rem;
}
.game-list {
  margin: 0;
  padding: 0;
  list-style: none;
  animation: interface-enter .75s .28s cubic-bezier(.2, .8, .2, 1) both;
}
.game-item { border-bottom: 1px solid rgba(120, 255, 173, .1); }
.game-select {
  width: 100%;
  min-height: 3rem;
  display: grid;
  grid-template-columns: 2rem 1fr auto;
  gap: .55rem;
  align-items: center;
  padding: 0 .35rem;
  border: 0;
  background: transparent;
  text-align: left;
  cursor: pointer;
  transition: color .18s ease, background .18s ease, padding .18s ease;
}
.game-select:hover,
.game-select:focus-visible {
  outline: 0;
  color: var(--green-soft);
  background: rgba(120, 255, 173, .035);
  padding-left: .65rem;
}
.game-select[aria-current="true"] { color: var(--green); }
.game-select[aria-current="true"]::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: linear-gradient(90deg, transparent, rgba(120, 255, 173, .09), transparent);
  animation: selection-scan .55s ease-out both;
}
.game-select { position: relative; overflow: hidden; }
.game-index {
  font: 500 .58rem/1 var(--mono);
  color: #4b5a52;
  letter-spacing: .08em;
}
.game-select[aria-current="true"] .game-index { color: var(--green); }
.game-select[aria-current="true"] .game-index::before {
  content: "▶ ";
  animation: cursor-blink 1.1s steps(2, jump-none) infinite;
}
.game-title {
  font-size: clamp(.92rem, 1.6vw, 1.15rem);
  font-weight: 560;
  letter-spacing: .01em;
}
.game-arrow {
  color: var(--green);
  opacity: 0;
  translate: -.5rem 0;
  transition: opacity .18s ease, translate .18s ease;
}
.game-select[aria-current="true"] .game-arrow,
.game-select:hover .game-arrow { opacity: 1; translate: 0; }
.empty-state {
  display: none;
  padding: 2rem .35rem;
  color: var(--muted);
  font: .72rem/1.6 var(--mono);
}
.empty-state.visible { display: block; }

.list-actions {
  display: flex;
  gap: 1.25rem;
  flex-wrap: wrap;
  padding: 1.1rem 0;
}
.text-action {
  border: 0;
  padding: .2rem 0;
  color: var(--green);
  background: transparent;
  font: 500 .62rem/1 var(--mono);
  letter-spacing: .06em;
  cursor: pointer;
}
.text-action:hover { color: #d7ffe6; }

.game-panel {
  min-width: 0;
  animation: interface-enter .85s .36s cubic-bezier(.2, .8, .2, 1) both;
}
.game-panel.panel-changing {
  animation: panel-materialize .48s cubic-bezier(.2, .8, .2, 1) both;
}
.cover {
  position: relative;
  min-height: 14rem;
  display: grid;
  place-items: center;
  overflow: hidden;
  border: 1px solid var(--line-strong);
  background: #070b08;
  isolation: isolate;
  transform: perspective(900px) rotateX(var(--tilt-x)) rotateY(var(--tilt-y));
  transition: border-color .35s ease, transform .8s cubic-bezier(.2, .8, .2, 1);
}
.cover::before,
.cover::after {
  content: "";
  position: absolute;
  z-index: -1;
}
.cover::before {
  inset: 0;
  background:
    linear-gradient(135deg, transparent 49.7%, rgba(120, 255, 173, .08) 50%, transparent 50.3%),
    repeating-linear-gradient(90deg, rgba(120, 255, 173, .035) 0 1px, transparent 1px 2.5rem);
  transform: translate(var(--cover-shift-x), var(--cover-shift-y));
  transition: transform 1s cubic-bezier(.2, .8, .2, 1);
}
.cover::after {
  width: 14rem;
  height: 14rem;
  border: 1px solid rgba(120, 255, 173, .2);
  border-radius: 50%;
  box-shadow: 0 0 0 2.5rem rgba(120, 255, 173, .025), 0 0 0 5rem rgba(120, 255, 173, .018);
  animation: cover-orbit 14s linear infinite;
}
.cover[data-theme="amber"] { border-color: rgba(255, 212, 106, .7); }
.cover[data-theme="amber"]::after { border-color: rgba(255, 212, 106, .35); }
.cover-mark {
  position: relative;
  z-index: 1;
  font: 650 clamp(2.3rem, 7vw, 5.5rem)/1 var(--mono);
  letter-spacing: -.08em;
  color: var(--green-soft);
  text-shadow: 0 0 25px rgba(120, 255, 173, .2);
  animation: title-signal 5s ease-in-out infinite;
}
.cover[data-theme="amber"] .cover-mark { color: #ffdc85; text-shadow: 0 0 25px rgba(255, 204, 92, .17); }
.corner {
  position: absolute;
  width: .85rem;
  height: .85rem;
  border-color: var(--green);
}
.corner.tl { top: .35rem; left: .35rem; border-top: 2px solid; border-left: 2px solid; }
.corner.tr { top: .35rem; right: .35rem; border-top: 2px solid; border-right: 2px solid; }
.corner.bl { bottom: .35rem; left: .35rem; border-bottom: 2px solid; border-left: 2px solid; }
.corner.br { bottom: .35rem; right: .35rem; border-bottom: 2px solid; border-right: 2px solid; }

.panel-meta {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  margin: .8rem 0 0;
  color: var(--green);
  font: 500 .53rem/1.4 var(--mono);
  letter-spacing: .12em;
  text-transform: uppercase;
}
.panel-title {
  margin: .55rem 0 .35rem;
  font: 600 clamp(1.2rem, 2.4vw, 1.75rem)/1.2 var(--mono);
  letter-spacing: -.04em;
}
.panel-eyebrow {
  color: #8aa098;
  font: .63rem/1.5 var(--mono);
}
.panel-description {
  max-width: 42rem;
  margin: .65rem 0;
  color: #9aa9a1;
  font-size: .78rem;
  line-height: 1.75;
}
.tag-row { display: flex; gap: .45rem; flex-wrap: wrap; margin: .8rem 0; }
.tag {
  padding: .22rem .42rem;
  border: 1px solid rgba(120, 255, 173, .24);
  color: #93a69c;
  font: .52rem/1 var(--mono);
}
.panel-actions { display: flex; gap: .8rem; margin-top: 1rem; }
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 2.5rem;
  padding: 0 1rem;
  border: 1px solid var(--green);
  color: #021008;
  background: var(--green);
  text-decoration: none;
  font: 600 .62rem/1 var(--mono);
  letter-spacing: .08em;
  text-transform: uppercase;
  position: relative;
  overflow: hidden;
  transition: color .2s ease, background .2s ease, box-shadow .2s ease, transform .2s ease;
}
.button::after {
  content: "";
  position: absolute;
  inset: -50%;
  background: linear-gradient(110deg, transparent 35%, rgba(255, 255, 255, .58) 50%, transparent 65%);
  transform: translateX(-70%);
  transition: transform .65s cubic-bezier(.2, .8, .2, 1);
}
.button:hover {
  background: #b5ffcf;
  box-shadow: 0 0 1.5rem rgba(120, 255, 173, .22);
  transform: translateY(-2px);
}
.button:hover::after { transform: translateX(70%); }
.button.secondary { color: var(--green); background: transparent; }
.button.secondary:hover { color: #021008; background: var(--green); }

.arcade-footer {
  position: fixed;
  inset: auto 0 0;
  z-index: 5;
  display: flex;
  justify-content: center;
  padding: .75rem 1rem 1rem;
  color: #405048;
  background: linear-gradient(transparent, var(--bg) 45%);
  font: .5rem/1.5 var(--mono);
  letter-spacing: .08em;
  text-align: center;
  text-transform: uppercase;
}

.detail-shell {
  position: relative;
  z-index: 1;
  width: min(70rem, calc(100% - 2rem));
  min-height: 100svh;
  margin: 0 auto;
  padding: 6rem 0 4rem;
  animation: interface-enter .8s .18s cubic-bezier(.2, .8, .2, 1) both;
}
.back-link {
  display: inline-flex;
  margin-bottom: 1.4rem;
  color: var(--green);
  font: .62rem/1 var(--mono);
  text-decoration: none;
}
.detail-grid {
  display: grid;
  grid-template-columns: minmax(18rem, .85fr) minmax(20rem, 1.15fr);
  gap: clamp(2rem, 6vw, 5rem);
  align-items: center;
}
.detail-copy h1 {
  margin: .5rem 0;
  font: 650 clamp(2.8rem, 7vw, 6rem)/.95 var(--mono);
  letter-spacing: -.08em;
  animation: title-decode .85s .32s cubic-bezier(.16, 1, .3, 1) both;
}
.detail-kicker {
  color: var(--green);
  font: .58rem/1.4 var(--mono);
  letter-spacing: .14em;
  text-transform: uppercase;
}
.detail-description { color: #9aaba2; line-height: 1.8; }
.facts {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin: 1.5rem 0;
  background: var(--line);
  border: 1px solid var(--line);
}
.fact { padding: .8rem; background: rgba(2, 6, 7, .93); }
.fact dt { color: #526159; font: .5rem/1 var(--mono); text-transform: uppercase; }
.fact dd { margin: .35rem 0 0; color: #bac8c0; font: .65rem/1.4 var(--mono); }

@keyframes sweep { to { transform: rotate(1turn); } }
@keyframes orbit { to { transform: rotate(1turn); } }
@keyframes cover-orbit { to { transform: rotate(1turn); } }
@keyframes stars-drift { to { background-position: 35vw 49vh, -26vw 61vh; } }
@keyframes radar-arrive {
  from { opacity: 0; scale: .82; filter: blur(8px); }
  to { opacity: .84; scale: 1; filter: blur(0); }
}
@keyframes interface-enter {
  from { opacity: 0; translate: 0 .8rem; filter: blur(4px); }
  to { opacity: 1; translate: 0 0; filter: blur(0); }
}
@keyframes panel-materialize {
  0% { opacity: .15; transform: translateX(.45rem); clip-path: inset(0 0 100% 0); }
  45% { opacity: .8; clip-path: inset(0 0 38% 0); }
  100% { opacity: 1; transform: translateX(0); clip-path: inset(0); }
}
@keyframes selection-scan {
  from { transform: translateX(-110%); }
  to { transform: translateX(110%); }
}
@keyframes cursor-blink { 50% { opacity: .25; } }
@keyframes blip {
  0%, 72%, 100% { opacity: .18; scale: .72; }
  78%, 88% { opacity: 1; scale: 1; }
}
@keyframes blip-ring {
  0%, 72% { opacity: 0; scale: .3; }
  78% { opacity: .6; scale: .5; }
  96%, 100% { opacity: 0; scale: 1.8; }
}
@keyframes title-signal {
  0%, 96%, 100% { opacity: 1; transform: translate(0); }
  97% { opacity: .68; transform: translate(1px, -1px); }
  98% { opacity: 1; transform: translate(-1px, 1px); }
}
@keyframes title-decode {
  from { opacity: 0; letter-spacing: .08em; filter: blur(8px); }
  to { opacity: 1; letter-spacing: -.08em; filter: blur(0); }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    animation-duration: .01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .01ms !important;
  }
  .radar,
  .cover,
  .cover::before { transform: none !important; }
  .arcade-fx { display: none; }
}

@media (max-width: 740px) {
  .header-note { display: none; }
  .radar { width: 150vw; opacity: .58; }
  .arcade-shell { align-content: start; padding-top: 5.2rem; }
  .arcade-grid,
  .detail-grid { grid-template-columns: 1fr; }
  .game-panel { padding-top: .4rem; }
  .cover { min-height: 12rem; }
  .arcade-footer { position: static; }
  .panel-actions { flex-wrap: wrap; }
  .detail-grid { gap: 2rem; }
}