html { background: var(--background); overscroll-behavior: none; }
body {
  min-height: 100dvh;
  display: grid;
  place-items: center;
  overflow: hidden;
  color: var(--text);
  background: radial-gradient(circle at 50% 24%, rgba(70, 67, 206, .2), transparent 36%), #02040c;
  font-family: Inter, Arial, sans-serif;
  user-select: none;
  -webkit-user-select: none;
  touch-action: none;
}
.game-shell {
  position: relative;
  width: min(100vw, calc(100dvh * .5625));
  height: min(100dvh, calc(100vw * 1.7777778));
  min-width: 0;
  min-height: 0;
  overflow: hidden;
  isolation: isolate;
  background: #050916;
  box-shadow: 0 0 90px rgba(0, 0, 0, .74);
}
.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;
}
.splash-screen {
  position: fixed;
  z-index: 100;
  inset: 0;
  display: grid;
  place-items: center;
  width: 100%;
  height: 100%;
  padding: 0;
  overflow: hidden;
  background: #030713;
  opacity: 1;
  transition: opacity .42s ease, visibility .42s ease;
}
.splash-screen::before {
  content: "";
  position: absolute;
  inset: -40px;
  background: url('../assets/images/chain-pop-splash.png') center / cover no-repeat;
  filter: blur(26px) saturate(.9) brightness(.46);
  transform: scale(1.08);
  opacity: .76;
}
.splash-screen::after {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at center, transparent 42%, rgba(0, 3, 15, .52));
  pointer-events: none;
}
.splash-screen img {
  position: relative;
  z-index: 1;
  min-width: 0;
  min-height: 0;
  width: 100%;
  height: 100%;
  object-fit: contain;
  filter: drop-shadow(0 18px 65px rgba(0, 0, 0, .7));
  transition: transform .55s ease;
}
.splash-screen.is-leaving { visibility: hidden; opacity: 0; pointer-events: none; }
.splash-screen.is-leaving img { transform: scale(1.025); }
.splash-screen:focus-visible { outline: 3px solid var(--cyan); outline-offset: -6px; }
#game-canvas { width: 100%; height: 100%; touch-action: none; }
.screen, .hud { position: absolute; inset: 0; z-index: 3; }
.screen { display: flex; flex-direction: column; align-items: center; }
.is-hidden { display: none !important; }

.menu-screen {
  justify-content: flex-end;
  padding: calc(48px + var(--safe-top)) 34px calc(28px + var(--safe-bottom));
  text-align: center;
  background: linear-gradient(180deg, rgba(2, 5, 16, .02), rgba(2, 5, 16, .3) 40%, rgba(2, 5, 16, .96) 79%);
}
.brand-orbit { position: relative; width: 54px; height: 54px; margin-bottom: 12px; border: 2px solid rgba(79,215,255,.6); border-radius: 50%; box-shadow: 0 0 22px rgba(79,215,255,.5); }
.brand-orbit i, .brand-orbit span, .brand-orbit b { position: absolute; border-radius: 50%; }
.brand-orbit i { inset: 8px; border: 2px solid var(--violet); }
.brand-orbit span { inset: 17px; background: var(--gold); box-shadow: 0 0 14px var(--gold); }
.brand-orbit b { width: 10px; height: 10px; top: -5px; left: 20px; background: var(--pink); box-shadow: 0 0 12px var(--pink); }
.eyebrow { color: var(--cyan); font-size: 10px; font-weight: 800; line-height: 1; letter-spacing: .24em; text-transform: uppercase; }
h1, h2 { font-family: "Arial Narrow", Impact, sans-serif; text-transform: uppercase; }
h1 { margin-top: 8px; font-size: clamp(68px, 18vw, 110px); font-style: italic; line-height: .72; letter-spacing: -.05em; filter: drop-shadow(0 8px 25px rgba(0,0,0,.62)); }
h1 em { color: var(--gold); font-style: italic; text-shadow: 0 0 28px rgba(255,211,77,.48); }
.tagline { margin: 20px 0 22px; color: #d5dfec; font-size: 12px; font-weight: 700; line-height: 1.5; letter-spacing: .1em; text-transform: uppercase; }
button { cursor: pointer; color: var(--text); text-transform: uppercase; letter-spacing: .12em; }
button:focus-visible { outline: 3px solid #fff; outline-offset: 4px; }
.primary-button, .secondary-button {
  width: min(100%, 310px);
  min-height: 58px;
  padding: 0 28px;
  border: 1px solid rgba(255,255,255,.3);
  border-radius: 5px;
  background: linear-gradient(110deg, #7e54ee, #d841d2);
  box-shadow: 0 12px 34px rgba(177, 57, 224, .3), inset 0 1px rgba(255,255,255,.28);
  font: 800 18px/1 "Arial Narrow", Impact, sans-serif;
  transform: skewX(-4deg);
}
.primary-button:active { transform: skewX(-4deg) scale(.98); }
.secondary-button { margin-top: 10px; background: rgba(255,255,255,.08); box-shadow: none; }
.record-grid { display: grid; grid-template-columns: 1fr 1fr; width: min(100%, 310px); margin-top: 14px; border: 1px solid rgba(255,255,255,.1); background: rgba(2,7,19,.66); }
.record-grid > div { padding: 10px 7px; }
.record-grid > div + div { border-left: 1px solid rgba(255,255,255,.1); }
.record-grid span, .result-grid span, .hero-result span { display: block; color: var(--muted); font-size: 8px; letter-spacing: .14em; text-transform: uppercase; }
.record-grid strong { display: block; margin-top: 4px; font: 800 18px/1 "Arial Narrow", Impact, sans-serif; }
.text-button { padding: 11px 5px; background: transparent; color: #c8d5e8; font-size: 10px; font-weight: 800; }
.control-hint { color: #71839b; font-size: 9px; }

.hud { pointer-events: none; }
.hud-stat { position: absolute; top: calc(18px + var(--safe-top)); left: calc(18px + var(--safe-left)); min-width: 118px; padding: 9px 11px; border-left: 2px solid var(--cyan); background: linear-gradient(90deg, rgba(5,15,32,.9), transparent); }
.hud-stat span, .round-progress > span { display: block; color: #94a8c0; font-size: 8px; letter-spacing: .18em; text-transform: uppercase; }
.hud-stat strong { display: block; margin-top: 2px; font: 800 27px/.9 "Arial Narrow", Impact, sans-serif; }
.hud-level { left: 50%; min-width: 94px; border: 0; background: rgba(4,11,26,.72); text-align: center; transform: translateX(-50%); }
.icon-button { position: absolute; top: calc(17px + var(--safe-top)); right: calc(18px + var(--safe-right)); width: 44px; height: 44px; border: 1px solid rgba(255,255,255,.22); border-radius: 50%; background: rgba(4,10,25,.78); font-weight: 800; pointer-events: auto; }
.round-progress { position: absolute; top: calc(76px + var(--safe-top)); left: 50%; display: flex; gap: 18px; padding: 7px 13px; border: 1px solid rgba(255,255,255,.08); border-radius: 99px; background: rgba(3,8,22,.65); transform: translateX(-50%); white-space: nowrap; }
.round-progress strong { color: #fff; font-size: 11px; }
.tap-hint { position: absolute; bottom: calc(40px + var(--safe-bottom)); left: 50%; padding: 10px 16px; border: 1px solid rgba(79,215,255,.24); border-radius: 99px; color: #d9f7ff; background: rgba(4,13,31,.74); font-size: 9px; font-weight: 800; letter-spacing: .18em; text-transform: uppercase; transform: translateX(-50%); white-space: nowrap; animation: hintPulse 1.8s ease-in-out infinite; }
.chain-readout { position: absolute; top: 112px; left: 50%; color: #fff; font: italic 800 14px/1 "Arial Narrow", Impact, sans-serif; letter-spacing: .14em; text-transform: uppercase; text-shadow: 0 0 18px var(--pink); transform: translateX(-50%); }
.chain-readout strong { color: var(--gold); font-size: 24px; }
@keyframes hintPulse { 50% { opacity: .55; transform: translateX(-50%) scale(.98); } }

.modal-screen { justify-content: center; padding: calc(18px + var(--safe-top)) 22px calc(18px + var(--safe-bottom)); background: rgba(2,5,14,.78); backdrop-filter: blur(8px); }
.panel { width: min(100%, 380px); padding: 29px 25px 24px; border: 1px solid rgba(115,211,255,.25); border-radius: 8px; background: linear-gradient(155deg, rgba(14,22,50,.98), rgba(4,8,22,.99)); box-shadow: 0 24px 90px rgba(0,0,0,.68), inset 0 1px rgba(255,255,255,.06); text-align: center; }
.panel h2 { margin: 9px 0 20px; font-size: 44px; font-style: italic; line-height: .9; }
.tutorial-list { list-style: none; margin: 18px 0; padding: 0; text-align: left; }
.tutorial-list li { display: flex; align-items: center; gap: 12px; padding: 9px 0; border-bottom: 1px solid rgba(255,255,255,.08); color: #d9e4f2; font-size: 11px; }
.tutorial-list b { color: var(--cyan); font: 800 14px/1 "Arial Narrow", Impact, sans-serif; }
.compact-panel .text-button, .result-panel .text-button { margin-top: 7px; }
.event-screen { z-index: 4; justify-content: center; background: radial-gradient(circle, rgba(142,123,255,.18), rgba(2,5,14,.44) 48%, transparent 74%); pointer-events: none; text-align: center; }
.event-screen p { color: var(--cyan); font-size: 10px; font-weight: 800; letter-spacing: .22em; text-transform: uppercase; }
.event-screen strong { margin-top: 8px; font: italic 800 52px/.9 "Arial Narrow", Impact, sans-serif; text-transform: uppercase; text-shadow: 0 0 28px rgba(79,215,255,.55); }
.hero-result { margin: -2px 0 18px; }
.hero-result strong { display: block; margin-top: 4px; color: var(--gold); font: 800 52px/.9 "Arial Narrow", Impact, sans-serif; }
.result-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 1px; margin-bottom: 18px; background: rgba(255,255,255,.1); }
.result-grid div { padding: 11px 7px; background: #091329; }
.result-grid strong { display: block; margin-top: 4px; font: 800 19px/1 "Arial Narrow", Impact, sans-serif; }
.new-best { margin: -5px 0 11px; color: var(--gold); font-size: 12px; font-weight: 900; letter-spacing: .18em; text-transform: uppercase; }
.success-panel { border-color: rgba(85,242,166,.35); }