:root {
  --bg: #03120b;
  --ink: #f5fff9;
  --muted: #9fc9b0;
  --line: rgba(255, 255, 255, .18);
  --panel: rgba(3, 13, 12, .88);
  --green: #62ff88;
  --cyan: #3cecff;
  --yellow: #ffe56a;
  --pink: #ff5ea8;
  --orange: #ff9f43;
  --shadow: 0 18px 70px rgba(0, 0, 0, .52);
}

* { box-sizing: border-box; }

.hidden {
  display: none !important;
}

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

body {
  color: var(--ink);
  font-family: "Trebuchet MS", system-ui, sans-serif;
  background:
    radial-gradient(circle at 15% 14%, rgba(98, 255, 136, .2), transparent 22rem),
    radial-gradient(circle at 82% 18%, rgba(60, 236, 255, .18), transparent 24rem),
    linear-gradient(150deg, #03120b, #061b22 46%, #10091d);
  overflow-x: hidden;
}

body::before,
body::after {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
}

body::before {
  background:
    linear-gradient(rgba(255,255,255,.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.025) 1px, transparent 1px);
  background-size: 30px 30px;
  mask-image: linear-gradient(to bottom, transparent, #000 16%, #000 82%, transparent);
}

body::after {
  background: repeating-linear-gradient(to bottom, rgba(255,255,255,.04), rgba(255,255,255,.04) 1px, transparent 1px, transparent 4px);
  mix-blend-mode: soft-light;
  opacity: .34;
}

.home-link {
  position: fixed;
  top: 1rem;
  left: 1rem;
  z-index: 20;
  color: var(--ink);
  text-decoration: none;
  border: 1px solid var(--line);
  background: rgba(0, 0, 0, .45);
  padding: .55rem .75rem;
  border-radius: 6px;
  backdrop-filter: blur(10px);
}

.home-link:hover,
.home-link:focus-visible {
  border-color: var(--green);
  box-shadow: 0 0 18px rgba(98, 255, 136, .24);
  outline: none;
}

.shell {
  position: relative;
  z-index: 1;
  width: min(1140px, calc(100vw - 2rem));
  min-height: 100vh;
  margin: 0 auto;
  display: grid;
  grid-template-columns: minmax(0, 760px) minmax(280px, 320px);
  gap: 1rem;
  align-items: center;
  padding: 4.5rem 0 5rem;
}

.cabinet,
.panel {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel);
  box-shadow: var(--shadow);
  backdrop-filter: blur(16px);
}

.cabinet {
  padding: .8rem;
}

.marquee {
  min-height: 3.2rem;
  margin-bottom: .8rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: .7rem .9rem;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: linear-gradient(90deg, rgba(98,255,136,.16), rgba(60,236,255,.08));
  text-transform: uppercase;
}

.marquee span {
  color: var(--green);
  font-size: clamp(1.45rem, 4vw, 3rem);
  font-weight: 900;
  letter-spacing: .12em;
  text-shadow: 0 0 14px rgba(98,255,136,.45), 0 0 28px rgba(60,236,255,.2);
}

.marquee small {
  color: var(--cyan);
  font-weight: 800;
  letter-spacing: .08em;
  text-align: right;
}

.screen-wrap {
  position: relative;
  width: 100%;
  max-width: 720px;
  margin: 0 auto;
  aspect-ratio: 1 / 1;
}

#board {
  display: block;
  width: 100%;
  height: 100%;
  border: 2px solid rgba(255,255,255,.28);
  border-radius: 6px;
  background: #03060a;
  box-shadow: inset 0 0 34px rgba(0,0,0,.78), 0 0 34px rgba(98,255,136,.14);
}

.overlay {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  padding: 1rem;
  border-radius: 6px;
  background: rgba(0, 0, 0, .58);
}

.overlay-panel {
  width: min(92%, 360px);
  border: 1px solid rgba(255,255,255,.22);
  border-radius: 8px;
  background: rgba(3, 8, 13, .94);
  padding: 1.15rem;
  text-align: center;
  box-shadow: 0 18px 55px rgba(0,0,0,.56);
}

.overline {
  margin: 0 0 .35rem;
  color: var(--cyan);
  text-transform: uppercase;
  font-size: .75rem;
  letter-spacing: .14em;
}

.overlay-panel h1 {
  margin: 0;
  color: var(--green);
  font-size: clamp(2rem, 10vw, 3.2rem);
  letter-spacing: .08em;
  text-shadow: 0 0 18px rgba(98,255,136,.38);
}

.overlay-panel p {
  color: var(--muted);
  line-height: 1.45;
}

.overlay-panel button {
  border: 0;
  border-radius: 6px;
  background: linear-gradient(90deg, var(--green), var(--cyan));
  color: #03120b;
  cursor: pointer;
  font-weight: 900;
  padding: .8rem 1rem;
  text-transform: uppercase;
}

.score-entry {
  display: grid;
  gap: .55rem;
  margin: .85rem 0;
}

.score-entry label {
  color: var(--ink);
  font-weight: 800;
}

.score-entry input {
  width: 6rem;
  margin: 0 auto;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: #07151a;
  color: var(--ink);
  padding: .65rem;
  text-align: center;
  text-transform: uppercase;
  font: 900 1.2rem "Courier New", monospace;
}

.panel {
  padding: 1rem;
}

.meter-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: .65rem;
}

.meter,
.scores-box,
.controls {
  border: 1px solid var(--line);
  border-radius: 6px;
  background: rgba(255,255,255,.045);
}

.meter {
  min-height: 76px;
  padding: .7rem;
}

.meter span,
.scores-box h2,
.controls h2 {
  display: block;
  margin: 0 0 .35rem;
  color: var(--muted);
  font-size: .78rem;
  text-transform: uppercase;
  letter-spacing: .09em;
}

.meter strong {
  color: var(--ink);
  font-size: clamp(1.25rem, 4vw, 1.65rem);
}

.scores-box,
.controls {
  margin-top: .75rem;
  padding: .85rem;
}

.score-list {
  margin: 0;
  padding-left: 1.4rem;
  display: grid;
  gap: .25rem;
}

.score-list li {
  color: var(--ink);
  font-family: "Courier New", monospace;
}

.score-list span {
  color: var(--yellow);
}

.controls p {
  margin: .38rem 0;
  color: var(--muted);
}

.controls b {
  color: var(--ink);
}

.touch-controls {
  position: fixed;
  left: 50%;
  bottom: .75rem;
  z-index: 15;
  width: min(92vw, 260px);
  transform: translateX(-50%);
  display: none;
  grid-template-columns: repeat(3, 1fr);
  gap: .4rem;
}

.touch-controls button {
  min-height: 46px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: rgba(0, 0, 0, .66);
  color: var(--ink);
  cursor: pointer;
  font-weight: 900;
  backdrop-filter: blur(10px);
}

.touch-controls [data-move="up"] {
  grid-column: 2;
}

.touch-controls [data-move="left"] {
  grid-column: 1;
}

.touch-controls [data-move="down"] {
  grid-column: 2;
}

.touch-controls [data-move="right"] {
  grid-column: 3;
}

@media (max-width: 900px) {
  .shell {
    grid-template-columns: 1fr;
    align-items: start;
    padding-top: 4rem;
  }

  .panel {
    margin-bottom: 4.4rem;
  }

  .touch-controls {
    display: grid;
  }
}

@media (max-width: 560px) {
  .home-link {
    position: static;
    display: inline-block;
    margin: .75rem 1rem 0;
  }

  .shell {
    width: min(100vw - 1rem, 1140px);
    padding-top: .75rem;
  }

  .marquee {
    align-items: flex-start;
    flex-direction: column;
    gap: .25rem;
  }
}