:root {
  color-scheme: light dark;
  --ink: #f6f7fb;
  --muted: rgba(226, 236, 255, .68);
  --line: rgba(163, 215, 255, .16);
  --a: #ff7e82;
  --a-soft: #ffbe8f;
  --b: #50d8f1;
  --b-soft: #a9ecff;
  --gold: #edc778;
  --panel: rgba(10, 16, 25, .78);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* { box-sizing: border-box; }
html, body { width: 100%; min-height: 100%; margin: 0; overflow: hidden; background: #123f36; }
body { min-height: 100svh; color: var(--ink); overscroll-behavior: none; touch-action: manipulation; }
button { font: inherit; -webkit-tap-highlight-color: transparent; }

#app {
  position: relative;
  width: 100vw;
  height: 100svh;
  overflow: hidden;
  background:#123f36;
}

#app::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: radial-gradient(ellipse at center, transparent 66%, rgba(0,18,14,.16) 100%);
  z-index: 9;
}

.ambient { display:none; }

#scene-wrap {
  position: absolute;
  z-index: 2;
  inset: 0;
  overflow: hidden;
}

#game-canvas { display:block; width:100%; height:100%; touch-action:none; cursor:default; }
#game-canvas.is-interactive { cursor:pointer; }

.webgl-error {
  position:absolute; inset:0; display:grid; place-content:center; text-align:center; padding:24px;
  color:var(--ink); background:rgba(8,12,10,.94); z-index:10;
}
.webgl-error[hidden] { display:none; }
.webgl-error strong, .webgl-error span { display:block; }
.webgl-error span { margin-top:6px; color:var(--muted); }

.topbar {
  position:absolute; z-index:30;
  top:calc(10px + env(safe-area-inset-top)); left:50%; transform:translateX(-50%);
  width:min(calc(100% - 22px), 920px);
  display:flex; justify-content:space-between; align-items:center;
  pointer-events:none;
}
.topbar > * { pointer-events:auto; }
.topbar-actions { display:flex; align-items:center; gap:6px; }
.icon-button {
  width:40px; height:40px; border:1px solid var(--line); border-radius:14px;
  color:#f3faf6; background:rgba(7,31,26,.52); backdrop-filter:blur(18px) saturate(1.10); box-shadow:0 8px 26px rgba(0,24,19,.18);
  cursor:pointer; font-size:20px; line-height:1;
}
.icon-button:hover { background:rgba(18,61,51,.76); box-shadow:0 10px 26px rgba(0,24,19,.22); }

.player-chip {
  position:absolute; z-index:20;
  min-width:108px; text-align:center; padding:6px 11px;
  border:1px solid rgba(255,255,255,.18); border-radius:999px;
  background:rgba(8,34,29,.54); backdrop-filter:blur(14px) saturate(1.08);
  color:rgba(240,249,245,.72); box-shadow:0 8px 24px rgba(0,20,16,.18); font-size:11px; font-weight:820; letter-spacing:.02em;
  transition:.22s ease;
}
.player-chip--left { left:calc(12px + env(safe-area-inset-left)); top:calc(58px + env(safe-area-inset-top)); }
.player-chip--right { right:calc(12px + env(safe-area-inset-right)); top:calc(58px + env(safe-area-inset-top)); }
.player-chip.active[data-player="A"] { color:#5a2730; background:rgba(255,244,237,.88); border-color:rgba(238,160,126,.92); box-shadow:0 0 30px rgba(240,151,114,.30), inset 0 0 0 1px rgba(255,255,255,.20); animation:chipPulseA 1.7s ease-in-out infinite; }
.player-chip.active[data-player="B"] { color:#18394c; background:rgba(244,251,255,.90); border-color:rgba(113,183,220,.92); box-shadow:0 0 30px rgba(89,171,218,.30), inset 0 0 0 1px rgba(255,255,255,.20); animation:chipPulseB 1.7s ease-in-out infinite; }

.hud {
  position:absolute; z-index:40;
  left:0; right:0; bottom:calc(14px + env(safe-area-inset-bottom));
  width:100%; min-height:72px;
  display:grid; grid-template-columns:minmax(0,1fr) auto; gap:20px; align-items:end;
  padding:0 clamp(18px,3vw,44px);
  border:0; border-radius:0;
  background:transparent;
  backdrop-filter:none;
  box-shadow:none;
  pointer-events:none;
}
.hud__copy {
  min-width:0;
  max-width:min(620px,68vw);
  padding:0 0 4px;
  color:#f4f7f3;
  text-shadow:0 2px 4px rgba(0,28,22,.78),0 0 18px rgba(0,24,18,.35);
  pointer-events:none;
}
.hud__eyebrow { color:rgba(238,247,242,.80); font-size:10px; font-weight:900; text-transform:uppercase; letter-spacing:.16em; margin-bottom:4px; }
.hud__message { color:#fff; font-size:clamp(14px,2vw,18px); font-weight:820; line-height:1.18; }
.hud__selection { min-height:15px; margin-top:4px; color:rgba(242,249,245,.72); font-size:11px; font-weight:650; }

.action-button {
  position:relative;
  min-width:174px; min-height:64px; border-radius:999px; padding:10px 25px;
  display:flex; flex-direction:column; align-items:center; justify-content:center; gap:2px;
  color:#173d34;
  background:
    linear-gradient(180deg,rgba(255,255,255,.94),rgba(255,255,255,0) 42%),
    linear-gradient(145deg,#fffdf6 0%,#f2ead9 46%,#ddcda9 100%);
  border:1px solid rgba(210,177,109,.94);
  box-shadow:
    inset 0 1px 0 rgba(255,255,255,1),
    inset 0 -2px 0 rgba(132,96,40,.12),
    0 10px 20px rgba(0,25,19,.26),
    0 2px 5px rgba(0,25,19,.24),
    0 0 0 3px rgba(255,248,229,.13);
  cursor:pointer; font-weight:950; letter-spacing:.075em;
  transition:transform .16s ease,filter .16s ease,box-shadow .16s ease;
  pointer-events:auto;
  overflow:hidden;
}
.action-button::after {
  content:""; position:absolute; left:15%; right:15%; top:6px; height:1px;
  background:linear-gradient(90deg,transparent,rgba(255,255,255,.95),transparent);
  opacity:.9;
}
.action-button:hover:not(:disabled) {
  transform:translateY(-2px);
  filter:brightness(1.025);
  box-shadow:
    inset 0 1px 0 rgba(255,255,255,1),
    inset 0 -2px 0 rgba(132,96,40,.10),
    0 15px 28px rgba(0,25,19,.30),
    0 3px 7px rgba(0,25,19,.24),
    0 0 0 4px rgba(241,210,147,.18);
}
.action-button:active:not(:disabled) { transform:translateY(0) scale(.985); }
.action-button:disabled { cursor:default; opacity:.46; filter:saturate(.45); }
.action-button span { position:relative; z-index:1; font-size:14px; }
.action-button small { position:relative; z-index:1; font-size:8px; font-weight:900; letter-spacing:.14em; opacity:.58; }
.action-button--wide { width:100%; margin-top:22px; }

.winner {
  position:absolute; z-index:100; inset:0; display:grid; place-items:center; padding:24px;
  background:rgba(5,8,7,.62); backdrop-filter:blur(12px);
}
.winner[hidden] { display:none; }
.winner__card {
  width:min(92vw,430px); padding:34px 28px 28px; text-align:center;
  border-radius:30px; border:1px solid rgba(255,255,255,.13);
  background:linear-gradient(180deg,rgba(20,28,40,.97),rgba(8,12,20,.99));
  box-shadow:0 34px 100px rgba(0,0,0,.5);
}
.winner__spark { color:#8ef0ff; font-size:42px; margin-bottom:6px; animation:spark 1.5s ease-in-out infinite; }
.winner__title { font-family:Georgia,"Times New Roman",serif; font-size:clamp(30px,7vw,48px); font-weight:700; }
.winner__text { margin-top:8px; color:var(--muted); }
@keyframes spark { 50% { transform:rotate(14deg) scale(1.13); filter:drop-shadow(0 0 12px rgba(229,194,118,.48)); } }

.install-hint {
  position:absolute; z-index:80; right:10px; top:calc(62px + env(safe-area-inset-top));
  width:min(350px,calc(100% - 20px)); display:flex; gap:14px; align-items:flex-start;
  padding:13px 14px; border-radius:17px; border:1px solid rgba(255,255,255,.11);
  background:rgba(13,19,29,.94); box-shadow:0 16px 40px rgba(0,0,0,.34), 0 0 24px rgba(120,237,255,.12);
}
.install-hint[hidden] { display:none; }
.install-hint strong,.install-hint span { display:block; }
.install-hint strong { font-size:13px; margin-bottom:2px; }
.install-hint span { font-size:11px; color:var(--muted); line-height:1.35; }
.install-hint button { margin-left:auto; border:0; background:transparent; color:rgba(255,255,255,.62); font-size:21px; cursor:pointer; }

@media (hover:none), (pointer:coarse) {
  #action-key { display:none; }
  .action-button { min-width:142px; }
}

@media (max-width:620px) {
  #scene-wrap { inset:0; }
  .player-chip--left { left:calc(8px + env(safe-area-inset-left)); top:calc(54px + env(safe-area-inset-top)); }
  .player-chip--right { right:calc(8px + env(safe-area-inset-right)); top:calc(54px + env(safe-area-inset-top)); }
  .hud { min-height:76px; grid-template-columns:minmax(0,1fr) auto; gap:10px; padding:0 10px; bottom:calc(9px + env(safe-area-inset-bottom)); }
  .hud__copy { max-width:none; padding-left:2px; }
  .hud__message { font-size:13px; }
  .hud__selection { font-size:10px; }
  .action-button { min-width:124px; min-height:58px; padding-inline:14px; }
  .action-button span { font-size:12px; }
}

@media (max-width:410px) {
  .hud { grid-template-columns:minmax(0,1fr) 112px; }
  .action-button { min-width:0; width:112px; padding-inline:8px; }
  .hud__eyebrow { font-size:9px; }
  .hud__message { font-size:12px; }
  .player-chip { min-width:108px; font-size:10px; }
}

@media (max-height:650px) and (orientation:landscape) {
  #scene-wrap { inset:0; }
  .topbar { top:6px; }
  .player-chip--left,.player-chip--right { top:48px; }
  .hud { min-height:58px; padding:0 10px; bottom:7px; }
  .hud__copy { max-width:62vw; }
  .action-button { min-height:50px; min-width:132px; }
}

@media (prefers-reduced-motion:reduce) {
  *,*::before,*::after { animation-duration:1ms !important; animation-iteration-count:1 !important; transition-duration:1ms !important; }
}

@keyframes ambientFloat { 0%,100% { transform:translate3d(0,0,0) scale(1); } 50% { transform:translate3d(18px,-12px,0) scale(1.08); } }
@keyframes chipPulseA { 50% { box-shadow:0 0 42px rgba(255,126,160,.46), inset 0 0 0 1px rgba(255,255,255,.16); } }
@keyframes chipPulseB { 50% { box-shadow:0 0 42px rgba(80,216,241,.48), inset 0 0 0 1px rgba(255,255,255,.16); } }

/* V0.10 game-mode start menu */
.start-menu {
  position:absolute; inset:0; z-index:140; display:grid; place-items:center; padding:24px;
  background:linear-gradient(180deg,rgba(8,12,20,.58),rgba(7,10,16,.82));
  backdrop-filter:blur(18px) saturate(1.08);
}
.start-menu[hidden], .menu-view[hidden] { display:none !important; }
.start-menu__panel {
  width:min(860px,100%); max-height:calc(100svh - 48px); overflow:auto;
  padding:clamp(24px,4vw,42px); border-radius:30px;
  border:1px solid rgba(255,255,255,.14);
  background:linear-gradient(180deg,rgba(20,27,38,.94),rgba(10,15,24,.97));
  box-shadow:0 34px 100px rgba(0,0,0,.48), inset 0 1px 0 rgba(255,255,255,.06);
}
.menu-view h1 { margin:4px 0 8px; font-size:clamp(28px,5vw,48px); letter-spacing:-.035em; }
.menu-kicker { color:rgba(141,233,255,.76); font-size:11px; font-weight:900; letter-spacing:.2em; }
.menu-intro { margin:0 0 26px; color:var(--muted); line-height:1.5; }
.mode-grid { display:grid; grid-template-columns:repeat(3,minmax(0,1fr)); gap:14px; }
.mode-card {
  min-height:190px; padding:20px; text-align:left; border-radius:22px; cursor:pointer;
  border:1px solid rgba(255,255,255,.12); color:var(--ink);
  background:linear-gradient(180deg,rgba(255,255,255,.065),rgba(255,255,255,.025));
  transition:transform .16s ease,border-color .16s ease,background .16s ease;
}
.mode-card:hover { transform:translateY(-2px); border-color:rgba(142,240,255,.45); background:linear-gradient(180deg,rgba(142,240,255,.10),rgba(255,255,255,.03)); }
.mode-card__icon { display:grid; place-items:center; width:46px; height:46px; margin-bottom:28px; border-radius:15px; background:rgba(255,255,255,.09); font-size:22px; }
.mode-card strong, .mode-card span { display:block; }
.mode-card strong { font-size:18px; margin-bottom:7px; }
.mode-card > span:last-child { color:var(--muted); font-size:13px; line-height:1.4; }
.menu-back { margin:-6px 0 18px; border:0; background:transparent; color:var(--muted); cursor:pointer; padding:8px 0; }
.menu-field { display:grid; gap:7px; margin:20px 0 18px; color:var(--muted); font-size:12px; font-weight:800; }
.menu-field input, .online-join-row input {
  width:100%; min-height:50px; border-radius:15px; border:1px solid rgba(255,255,255,.14); outline:none;
  background:rgba(6,11,18,.72); color:#fff; padding:0 15px; font:inherit; font-size:16px;
}
.menu-field input:focus, .online-join-row input:focus { border-color:rgba(142,240,255,.58); box-shadow:0 0 0 3px rgba(142,240,255,.09); }
.online-actions { display:grid; gap:12px; }
.menu-primary, .menu-secondary {
  min-height:50px; border-radius:15px; padding:0 18px; cursor:pointer; font-weight:900; letter-spacing:.02em;
}
.menu-primary { border:0; color:#08131c; background:linear-gradient(145deg,#90efff,#efc878 58%,#ff9fc3); }
.menu-secondary { border:1px solid rgba(255,255,255,.15); color:var(--ink); background:rgba(255,255,255,.055); }
.online-join-row { display:grid; grid-template-columns:1fr auto; gap:10px; }
.online-join-row input { text-transform:uppercase; letter-spacing:.18em; font-weight:900; }
.menu-error { margin-top:14px; padding:11px 13px; border-radius:13px; color:#ffd9df; background:rgba(154,43,65,.24); border:1px solid rgba(255,126,151,.25); font-size:13px; }
.menu-lobby { text-align:center; }
.lobby-code { margin:14px 0 10px; font-size:clamp(44px,10vw,78px); font-weight:950; letter-spacing:.12em; user-select:text; cursor:text; }
.lobby-status { font-size:18px; font-weight:800; }
.lobby-players { min-height:24px; margin-top:8px; color:rgba(255,255,255,.78); }
.lobby-hint { margin:22px 0 18px; color:var(--muted); font-size:12px; }
@media (max-width:700px) {
  .start-menu { padding:12px; }
  .start-menu__panel { max-height:calc(100svh - 24px); border-radius:24px; padding:22px 16px; }
  .mode-grid { grid-template-columns:1fr; }
  .mode-card { min-height:108px; display:grid; grid-template-columns:54px 1fr; grid-template-rows:auto auto; column-gap:12px; align-content:center; }
  .mode-card__icon { grid-row:1 / span 2; margin:0; }
  .mode-card strong { align-self:end; }
  .mode-card > span:last-child { align-self:start; }
  .online-join-row { grid-template-columns:1fr; }
}