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% 15%, rgba(79, 62, 191, .22), transparent 35%),
    #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-height: 0;
  overflow: hidden;
  isolation: isolate;
  background: #071020;
  box-shadow: 0 0 80px rgba(0, 0, 0, .7);
}
.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: -36px;
  background: url('../assets/images/lane-panic-splash.png') center / cover no-repeat;
  filter: blur(24px) saturate(.9) brightness(.58);
  transform: scale(1.08);
  opacity: .72;
}
.splash-screen::after {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at center, transparent 38%, rgba(0, 3, 12, .52) 100%);
  pointer-events: none;
}
.splash-screen img {
  position: relative;
  z-index: 1;
  display: block;
  width: 100%;
  height: 100%;
  object-fit: contain;
  filter: drop-shadow(0 18px 60px rgba(0, 0, 0, .65));
  transform: scale(1);
  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(58px + var(--safe-top)) 34px calc(30px + var(--safe-bottom));
  text-align: center;
  background: linear-gradient(180deg, rgba(2, 6, 17, .05), rgba(3, 7, 18, .26) 35%, rgba(2, 5, 15, .95) 80%);
}
.brand-mark { display: flex; gap: 5px; height: 17px; margin-bottom: 10px; transform: skewX(-16deg); }
.brand-mark span, .brand-mark i { width: 12px; background: var(--cyan); box-shadow: 0 0 14px var(--cyan); }
.brand-mark i { width: 30px; background: var(--violet); box-shadow: 0 0 14px var(--violet); }
.eyebrow { color: var(--cyan); font: 700 10px/1 Inter, Arial, sans-serif; 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(66px, 18vw, 108px); line-height: .72; letter-spacing: -.045em; filter: drop-shadow(0 8px 24px rgba(0,0,0,.55)); }
h1 em { color: var(--cyan); font-style: italic; text-shadow: 0 0 26px rgba(56, 217, 255, .55); }
.tagline { margin: 19px 0 22px; color: #c8d4e5; font: 600 12px/1.55 Inter, Arial, sans-serif; letter-spacing: .08em; 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: 4px;
  background: linear-gradient(110deg, #16acd5, #5965ed);
  box-shadow: 0 12px 34px rgba(44, 157, 240, .3), inset 0 1px rgba(255,255,255,.25);
  font: 800 18px/1 "Arial Narrow", Impact, sans-serif;
  transform: skewX(-5deg);
}
.primary-button:active { transform: skewX(-5deg) scale(.98); }
.secondary-button { margin-top: 10px; background: rgba(255,255,255,.08); box-shadow: none; }
.best-grid { display: grid; grid-template-columns: 1fr 1fr; width: min(100%, 310px); margin: 18px 0 10px; border: 1px solid rgba(255,255,255,.1); background: rgba(2,7,19,.6); }
.best-grid > div { padding: 10px 9px; }
.best-grid > div + div { border-left: 1px solid rgba(255,255,255,.1); }
.best-grid span, .result-grid span, .result-score span { display: block; color: var(--muted); font-size: 8px; letter-spacing: .15em; text-transform: uppercase; }
.best-grid strong { display: block; margin-top: 4px; font: 700 18px/1 "Arial Narrow", Impact, sans-serif; }
.menu-actions { display: flex; justify-content: center; gap: 24px; }
.text-button { padding: 10px 4px; background: transparent; color: #c8d5e8; font: 700 10px/1 Inter, Arial, sans-serif; }
.control-hint { margin-top: 10px; color: #75869e; font-size: 9px; }

.hud { height: auto; bottom: auto; display: grid; grid-template-columns: 1fr 1fr 42px; gap: 10px; align-items: start; padding: calc(18px + var(--safe-top)) calc(18px + var(--safe-right)) 0 calc(18px + var(--safe-left)); pointer-events: none; }
.hud-stat { padding: 9px 11px; border-left: 2px solid var(--cyan); background: linear-gradient(90deg, rgba(5,15,32,.8), transparent); }
.hud-stat span { display: block; color: #94a8c0; font-size: 8px; letter-spacing: .18em; text-transform: uppercase; }
.hud-stat strong { display: block; margin-top: 3px; font: 700 24px/.9 "Arial Narrow", Impact, sans-serif; }
.hud-distance { text-align: right; border-right: 2px solid var(--violet); border-left: 0; background: linear-gradient(270deg, rgba(5,15,32,.8), transparent); }
.icon-button { width: 40px; height: 40px; border: 1px solid rgba(255,255,255,.2); border-radius: 50%; background: rgba(4,10,25,.72); font-weight: 700; pointer-events: auto; }

.modal-screen { justify-content: center; padding: calc(18px + var(--safe-top)) 22px calc(18px + var(--safe-bottom)); background: rgba(2,5,14,.72); backdrop-filter: blur(8px); }
.panel { width: min(100%, 350px); padding: 30px 26px 26px; border: 1px solid rgba(120,216,255,.25); border-radius: 7px; background: linear-gradient(155deg, rgba(11,23,48,.97), rgba(3,8,20,.98)); box-shadow: 0 24px 90px rgba(0,0,0,.65), inset 0 1px rgba(255,255,255,.06); text-align: center; }
.panel h2 { margin: 8px 0 20px; font-size: 52px; line-height: .9; font-style: italic; }
.tutorial-list { list-style: none; margin: 24px 0; padding: 0; text-align: left; }
.tutorial-list li { display: flex; align-items: center; gap: 14px; padding: 12px 0; border-bottom: 1px solid rgba(255,255,255,.08); color: #d9e4f2; font-size: 12px; }
.tutorial-list b { color: var(--cyan); font: 700 15px/1 "Arial Narrow", Impact, sans-serif; }
.compact-panel .text-button, .result-panel .text-button { margin-top: 8px; }
.countdown-screen { justify-content: center; background: rgba(2,5,14,.18); pointer-events: none; }
.countdown-screen strong { font: italic 800 140px/.75 "Arial Narrow", Impact, sans-serif; text-shadow: 0 0 30px var(--cyan); }
.countdown-screen span { margin-top: 22px; color: var(--cyan); font-size: 11px; font-weight: 700; letter-spacing: .25em; text-transform: uppercase; }
.new-best { margin: -8px 0 11px; color: #ffd04a; font: 800 13px/1 Inter, Arial, sans-serif; letter-spacing: .18em; text-transform: uppercase; }
.result-score { margin: -4px 0 18px; }
.result-score strong { display: block; margin-top: 3px; font: 800 64px/.9 "Arial Narrow", Impact, sans-serif; color: var(--cyan); }
.result-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 1px; margin-bottom: 20px; background: rgba(255,255,255,.1); }
.result-grid div { padding: 12px 8px; background: #091329; }
.result-grid strong { display: block; margin-top: 5px; font: 700 19px/1 "Arial Narrow", Impact, sans-serif; }
.toast { position: absolute; z-index: 8; left: 50%; bottom: calc(25px + var(--safe-bottom)); transform: translateX(-50%); padding: 10px 16px; border: 1px solid var(--line); border-radius: 4px; background: rgba(4,11,26,.94); color: var(--cyan); font-size: 10px; font-weight: 700; letter-spacing: .12em; text-transform: uppercase; }