:root {
  --accent: #ffb020;
  --accent2: #ff5a2c;
  --panel: rgba(14, 16, 22, 0.92);
  --text: #eef2f6;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

html, body {
  width: 100%; height: 100%;
  overflow: hidden;
  background: #05070c;
  color: var(--text);
  font-family: "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  user-select: none;
  -webkit-user-select: none;
}

#gl { position: fixed; inset: 0; width: 100%; height: 100%; display: block; }

.hidden { display: none !important; }

.overlay {
  position: fixed; inset: 0;
  display: flex; align-items: center; justify-content: center;
  background: radial-gradient(circle at 50% 30%, rgba(30,34,46,.75), rgba(4,6,12,.94));
  z-index: 20;
  backdrop-filter: blur(3px);
}

.panel {
  background: var(--panel);
  border: 1px solid rgba(255,255,255,.08);
  border-radius: 16px;
  padding: 34px 40px;
  width: min(90vw, 520px);
  text-align: center;
  box-shadow: 0 20px 60px rgba(0,0,0,.6);
}

.title {
  font-size: clamp(30px, 6vw, 52px);
  font-weight: 900;
  letter-spacing: 2px;
  white-space: normal;
  background: linear-gradient(90deg, var(--accent), var(--accent2));
  -webkit-background-clip: text; background-clip: text; color: transparent;
  text-shadow: 0 0 40px rgba(255,120,20,.25);
}
.subtitle { color: #9aa4b2; margin: 8px 0 22px; font-size: 15px; }

h1, h2 { margin-bottom: 14px; }
h2 { font-size: 30px; }

.menu-block { text-align: left; margin: 10px auto 22px; max-width: 340px; }
.field { display: flex; flex-direction: column; gap: 6px; margin-bottom: 14px; font-size: 14px; color: #b9c2ce; }
.field select {
  padding: 9px 10px; border-radius: 8px; border: 1px solid #333a47;
  background: #12161f; color: var(--text); font-size: 14px;
}
.check { display: flex; align-items: center; gap: 8px; font-size: 14px; color: #b9c2ce; margin: 6px 0; cursor: pointer; }

.btn {
  display: block; width: 100%; margin: 10px 0;
  padding: 13px 18px; border: 1px solid rgba(255,255,255,.14);
  border-radius: 10px; background: #1a1f2b; color: var(--text);
  font-size: 16px; font-weight: 600; cursor: pointer; transition: transform .08s, background .15s;
}
.btn:hover { background: #232a3a; transform: translateY(-1px); }
.btn-primary {
  background: linear-gradient(90deg, var(--accent), var(--accent2));
  color: #1a1200; border: none; font-weight: 800; letter-spacing: 1px;
}
.btn-primary:hover { filter: brightness(1.08); }

.showroom-panel {
  position: absolute; bottom: 32px; right: 32px;
  width: 360px; text-align: left; padding: 22px 26px;
  max-height: calc(100vh - 64px); overflow-y: auto;
}
.sr-note { color: #9aa4b2; font-size: 12.5px; line-height: 1.5; margin: 4px 0 16px; }
.sr-controls { max-width: 100%; margin: 0; }
.sr-group {
  border-top: 1px solid rgba(255,255,255,.08);
  padding-top: 12px; margin-top: 6px;
}
.sr-group h3 {
  font-size: 12px; color: var(--accent); letter-spacing: 1px;
  text-transform: uppercase; margin-bottom: 8px;
}
.sr-controls .field { margin-bottom: 10px; }
.sr-controls input[type=range] { width: 100%; accent-color: var(--accent); }

.controls-help { margin-top: 22px; text-align: left; border-top: 1px solid rgba(255,255,255,.08); padding-top: 16px; }
.controls-help h3 { font-size: 14px; color: var(--accent); margin-bottom: 8px; letter-spacing: 1px; }
.controls-help ul { list-style: none; font-size: 13px; color: #9aa4b2; line-height: 1.7; }
.controls-help b { color: #dfe6ee; }

#loading { background: #05070c; backdrop-filter: none; }
.bar { width: 100%; height: 12px; background: #1a1f2b; border-radius: 6px; overflow: hidden; margin: 18px 0 8px; }
#bar-fill { height: 100%; width: 0%; background: linear-gradient(90deg, var(--accent), var(--accent2)); transition: width .2s; }
#loading-pct { color: #9aa4b2; font-size: 13px; }

#hud { position: fixed; inset: 0; z-index: 10; pointer-events: none; font-variant-numeric: tabular-nums; }
#hud button { pointer-events: auto; }

.hud-top-left { position: absolute; top: 18px; left: 20px; }
.hud-timer { font-size: 34px; font-weight: 800; text-shadow: 0 2px 8px rgba(0,0,0,.7); }
.hud-timer small { font-size: 15px; color: #9aa4b2; font-weight: 500; margin-left: 4px; }
.hud-cp, .hud-lives { font-size: 14px; color: #cfd6df; margin-top: 4px; text-shadow: 0 1px 4px rgba(0,0,0,.7); }
.hud-cp span, .hud-lives span { color: var(--accent); font-weight: 700; }

.hud-top-right { position: absolute; top: 18px; right: 20px; display: flex; gap: 8px; }
.mini {
  width: 42px; height: 42px; border-radius: 10px; font-size: 18px;
  background: rgba(20,24,32,.8); border: 1px solid rgba(255,255,255,.12);
  color: var(--text); cursor: pointer;
}
.mini:hover { background: rgba(40,46,60,.9); }

.hud-speedo { position: absolute; bottom: 18px; right: 24px; text-align: center; }
.dial-bg { fill: rgba(10,12,18,.72); stroke: rgba(255,255,255,.1); stroke-width: 2; }
.dial-arc { fill: none; stroke: var(--accent); stroke-width: 6; stroke-linecap: round; filter: drop-shadow(0 0 4px rgba(255,160,32,.7)); }
.needle { stroke: var(--accent2); stroke-width: 3; stroke-linecap: round; }
.hub { fill: #cfd6df; }
.speed-num { margin-top: -46px; }
.speed-num span { font-size: 30px; font-weight: 800; }
.speed-num small { display: block; font-size: 11px; color: #9aa4b2; }

.hud-msg {
  position: absolute; top: 22%; left: 50%; transform: translateX(-50%);
  font-size: 30px; font-weight: 800; text-align: center;
  text-shadow: 0 2px 14px rgba(0,0,0,.85); opacity: 0; transition: opacity .3s;
  color: var(--accent); white-space: nowrap;
}
.hud-msg.show { opacity: 1; }

.hud-boost { position: absolute; bottom: 22px; left: 20px; width: 160px; height: 10px; background: rgba(20,24,32,.7); border-radius: 5px; overflow: hidden; border: 1px solid rgba(255,255,255,.1); }
#hud-boost-fill { height: 100%; width: 100%; background: linear-gradient(90deg, #35c8ff, #6affce); transition: width .1s; }

#end-title { font-size: 46px; }
#end-title.win { color: #6affce; }
#end-title.lose { color: #ff5a2c; }
#end-sub { color: #9aa4b2; margin-bottom: 20px; }

.countdown {
  position: fixed; inset: 0; display: none;
  align-items: center; justify-content: center;
  pointer-events: none; z-index: 40;
  font-weight: 900; color: #fff;
  text-shadow: 0 6px 30px rgba(0,0,0,.7), 0 0 18px rgba(53,200,255,.6);
}
.countdown.show { display: flex; }
.countdown span {
  display: inline-block; font-size: 22vh; line-height: 1;
  animation: cd-pop .7s ease-out forwards;
}
.countdown span.go { color: #6affce; font-size: 18vh; letter-spacing: .04em; }
@keyframes cd-pop {
  0%   { transform: scale(2.4); opacity: 0; }
  25%  { transform: scale(1); opacity: 1; }
  75%  { transform: scale(1); opacity: 1; }
  100% { transform: scale(.4); opacity: 0; }
}

.finish-flag {
  position: fixed; inset: 0; width: 100vw; height: 100vh;
  display: none; pointer-events: none; z-index: 45;
}
.finish-flag.show { display: block; }

#menu {
  background: url('../assets/menu-bg2.png') center center / cover no-repeat !important;
}

#menu::before {
  content: '';
  position: absolute;
  inset: 0;
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(8px);
  z-index: -1;
}

#menu .panel {
  width: min(94vw, 540px);
  padding: 26px 44px 24px;
  border: 1px solid rgba(255,176,32,.18);
  background:
    radial-gradient(130% 90% at 50% -15%, rgba(255,120,20,.16), transparent 62%),
    var(--panel);
  box-shadow: 0 24px 70px rgba(0,0,0,.65), inset 0 1px 0 rgba(255,255,255,.05);
}
#menu .title {
  font-size: clamp(30px, 6vw, 46px); letter-spacing: 1px; white-space: nowrap;
  margin-bottom: 2px;
  filter: drop-shadow(0 4px 26px rgba(255,120,20,.35));
  animation: title-pulse 4.5s ease-in-out infinite;
}
@keyframes title-pulse { 0%,100% { filter: drop-shadow(0 4px 22px rgba(255,120,20,.30)); } 50% { filter: drop-shadow(0 4px 32px rgba(255,120,20,.55)); } }
#menu .subtitle { margin: 6px 0 18px; font-size: 14px; }
#menu .menu-block { margin: 6px auto 16px; }
#menu .field select:hover, #menu .field select:focus { border-color: var(--accent); outline: none; }
#menu .btn-primary {
  font-size: 18px; padding: 14px; margin: 6px 0 2px;
  box-shadow: 0 8px 26px rgba(255,120,20,.35);
}

.controls-help { margin-top: 14px; border-top: 1px solid rgba(255,255,255,.08); padding-top: 12px; text-align: left; }
.controls-help summary {
  list-style: none; cursor: pointer; user-select: none;
  font-size: 14px; font-weight: 700; letter-spacing: 1px; color: var(--accent);
  display: flex; align-items: center; gap: 8px; padding: 4px 0;
}
.controls-help summary::-webkit-details-marker { display: none; }
.controls-help summary::before {
  content: '▸'; font-size: 12px; transition: transform .15s; color: var(--accent);
}
.controls-help[open] summary::before { transform: rotate(90deg); }
.controls-help[open] .key-grid { margin-top: 10px; }

.key-grid {
  display: grid; grid-template-columns: auto 1fr; gap: 5px 14px;
  align-items: center; font-size: 12.5px; color: #aeb7c4;
}
.key-grid > span:nth-child(odd) { display: flex; gap: 4px; align-items: center; justify-content: flex-start; }
.key-grid em { color: var(--accent); font-style: normal; font-size: 11px; margin-left: 3px; }
kbd {
  display: inline-block; min-width: 16px; padding: 2px 6px;
  font: 600 11px/1 ui-monospace, SFMono-Regular, monospace; text-align: center;
  color: #eef2f6; background: linear-gradient(#2b3242, #20262f);
  border: 1px solid #3a4252; border-bottom-color: #0f131a;
  border-radius: 5px; box-shadow: 0 2px 0 rgba(0,0,0,.4);
}

#showroom {
  pointer-events: none;
}
#showroom .panel {
  pointer-events: auto;
}