@import url('https://fonts.googleapis.com/css2?family=Chakra+Petch:wght@400;600;700&family=Share+Tech+Mono&display=swap');

:root {
  color-scheme: dark;
  --ink: #e8edf8;
  --muted: #7b849c;
  --panel: #101421;
  --line: #2a3042;
  --green: #23d18b;
  --red: #ff4d6d;
  --yellow: #ffd166;
  --blue: #38bdf8;
}

* { box-sizing: border-box; }

html, body {
  min-height: 100%;
  margin: 0;
  overscroll-behavior: none;
}

body {
  min-height: 100svh;
  display: grid;
  place-items: center;
  padding: max(18px, env(safe-area-inset-top)) max(16px, env(safe-area-inset-right)) max(18px, env(safe-area-inset-bottom)) max(16px, env(safe-area-inset-left));
  color: var(--ink);
  background:
    linear-gradient(rgba(255,255,255,.018) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.018) 1px, transparent 1px),
    radial-gradient(circle at 50% 35%, #182039 0, #0b0e18 40%, #05060a 100%);
  background-size: 24px 24px, 24px 24px, auto;
  font-family: "Chakra Petch", system-ui, sans-serif;
}

button, label, .board { -webkit-tap-highlight-color: transparent; }
button { font: inherit; }

.game-shell { width: min(100%, 620px); text-align: center; }
.masthead { margin-bottom: 18px; }
.eyebrow { margin: 0 0 5px; color: #69728a; font: .72rem "Share Tech Mono", monospace; letter-spacing: .2em; }
h1 { margin: 0; font-size: clamp(2rem, 8vw, 3.6rem); line-height: .95; letter-spacing: .05em; text-shadow: 0 0 24px rgba(56,189,248,.12); }
h1 span { color: var(--blue); }
.subtitle { margin: 10px 0 0; color: var(--muted); font-size: .86rem; }

.console {
  padding: clamp(14px, 3vw, 24px);
  border: 1px solid #343b50;
  border-radius: 24px;
  background: linear-gradient(145deg, rgba(23,28,44,.96), rgba(9,12,20,.98));
  box-shadow: 0 24px 70px #000a, inset 0 1px #ffffff0c;
}

.readout { display: grid; grid-template-columns: 72px 1fr 72px; gap: 10px; align-items: stretch; margin-bottom: 18px; }
.stat, .status-panel { border: 1px solid var(--line); border-radius: 10px; background: #090c14; box-shadow: inset 0 0 16px #0009; }
.stat { display: grid; place-items: center; padding: 7px 4px; }
.stat .label { color: #727b92; font: .62rem "Share Tech Mono", monospace; letter-spacing: .12em; }
.stat strong { color: #d9ffef; font: 1.45rem "Share Tech Mono", monospace; text-shadow: 0 0 8px #23d18b66; }
.status-panel { min-width: 0; display: flex; align-items: center; justify-content: center; gap: 8px; padding: 7px; color: #b5bed2; font: clamp(.66rem, 2.6vw, .85rem) "Share Tech Mono", monospace; letter-spacing: .08em; }
.status-light { width: 8px; height: 8px; flex: 0 0 auto; border-radius: 50%; background: #4d5363; box-shadow: 0 0 0 3px #202431; }
.status-light.live { background: var(--green); box-shadow: 0 0 10px var(--green); }
.status-light.error { background: var(--red); box-shadow: 0 0 10px var(--red); }

.board {
  position: relative;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(10px, 2.5vw, 15px);
  width: min(100%, 430px);
  aspect-ratio: 1;
  margin: auto;
  padding: clamp(10px, 2.5vw, 15px);
  border: 1px solid #343b50;
  border-radius: 50%;
  background: #070910;
  box-shadow: inset 0 0 30px #000, 0 12px 30px #0008;
  touch-action:none;
  user-select: none;
}

.pad {
  position: relative;
  border: 1px solid color-mix(in srgb, var(--pad-color), #111 68%);
  background: color-mix(in srgb, var(--pad-color), #070910 82%);
  color: color-mix(in srgb, var(--pad-color), white 12%);
  cursor: pointer;
  overflow: hidden;
  transition: filter 80ms, transform 80ms, background 80ms, box-shadow 80ms;
  touch-action:none;
}
.pad::after { content: ""; position: absolute; inset: 0; opacity: .17; background: repeating-linear-gradient(0deg, transparent 0 5px, #fff 6px); }
.pad span { position: relative; z-index: 1; opacity: .4; font: 700 1rem "Share Tech Mono", monospace; }
.pad-green { --pad-color: var(--green); border-radius: 100% 12px 12px 12px; }
.pad-red { --pad-color: var(--red); border-radius: 12px 100% 12px 12px; }
.pad-yellow { --pad-color: var(--yellow); border-radius: 12px 12px 12px 100%; }
.pad-blue { --pad-color: var(--blue); border-radius: 12px 12px 100% 12px; }
.pad.active { background: var(--pad-color); filter: brightness(1.25); transform: scale(.975); box-shadow: 0 0 30px var(--pad-color), inset 0 0 22px #fff6; color: #fff; }
.pad:focus-visible { outline: 3px solid #fff; outline-offset: -5px; }
.pad:disabled { cursor: default; }

.core {
  position: absolute;
  inset: 50% auto auto 50%;
  width: 29%;
  aspect-ratio: 1;
  display: grid;
  place-items: center;
  translate: -50% -50%;
  border: clamp(7px, 2vw, 12px) solid #070910;
  border-radius: 50%;
  background: radial-gradient(circle, #242a3b, #10131e 65%);
  color: #657088;
  font: 700 clamp(.6rem, 2.5vw, .9rem) "Share Tech Mono", monospace;
  letter-spacing: .1em;
  pointer-events: none;
  box-shadow: inset 0 0 15px #000c;
}

.controls { display: flex; align-items: center; justify-content: center; gap: 18px; margin-top: 20px; }
.control-button { min-height: 46px; padding: 0 22px; border: 1px solid #3b8fac; border-radius: 7px; color: #dff8ff; background: #123241; box-shadow: 0 0 18px #38bdf822; cursor: pointer; font-weight: 700; letter-spacing: .07em; }
.control-button:hover { background: #19475a; }
.control-button:active { transform: translateY(1px); }
.control-button:disabled { opacity: .55; cursor: default; }
.strict-toggle { display: flex; align-items: center; gap: 8px; color: #9da6bb; font: .72rem "Share Tech Mono", monospace; cursor: pointer; }
.strict-toggle input { position: absolute; opacity: 0; }
.switch { position: relative; width: 38px; height: 20px; border: 1px solid #444b5e; border-radius: 20px; background: #090c14; }
.switch::after { content: ""; position: absolute; width: 12px; height: 12px; top: 3px; left: 4px; border-radius: 50%; background: #737b8f; transition: .15s; }
.strict-toggle input:checked + .switch { border-color: var(--red); box-shadow: 0 0 9px #ff4d6d44; }
.strict-toggle input:checked + .switch::after { left: 20px; background: var(--red); }
.strict-toggle input:focus-visible + .switch { outline: 2px solid #fff; outline-offset: 3px; }

footer { color: #626b80; font: .7rem "Share Tech Mono", monospace; }
kbd { display: inline-block; min-width: 20px; margin: 0 2px; padding: 2px 4px; border: 1px solid #343b50; border-radius: 3px; background: #111522; color: #949db0; }

@media (max-width: 430px) {
  body { padding-left: 10px; padding-right: 10px; }
  .console { border-radius: 17px; }
  .controls { flex-direction: column; gap: 13px; }
  .control-button { width: 100%; }
  footer { display: none; }
}

@media (max-height: 690px) and (orientation: landscape) {
  body { display: block; }
  .game-shell { margin: auto; }
  .masthead { margin-bottom: 8px; }
  .subtitle, footer { display: none; }
  .console { padding: 10px; }
  .board { width: min(58vh, 360px); }
  .readout { margin-bottom: 8px; }
  .controls { margin-top: 8px; }
}

@media (prefers-reduced-motion: reduce) { * { transition-duration: 0s !important; } }