/* Righteous is bundled (fonts/OFL-Righteous.txt) rather than fetched from
   Google Fonts: a YouTube Playable may not load anything from another host,
   and the web build is simpler for having one source too. */
@font-face {
  font-family: 'Righteous';
  src: url('../fonts/Righteous-Regular.woff2') format('woff2');
  font-weight: 400; font-style: normal; font-display: swap;
}

:root { --ui: 1; --ink: #08122b; --neon: #4dd0ff; --gold: #ffd24a; }
* { box-sizing: border-box; -webkit-tap-highlight-color: transparent; }
html, body {
  margin: 0; height: 100%; overflow: hidden;
  background: #05060f;
  font-family: 'Righteous', 'Trebuchet MS', system-ui, sans-serif;
  color: #fff; user-select: none;
}
#wrap {
  position: absolute; left: 50%; top: 50%;
  /* Width is rewritten by resize() to match the screen's aspect ratio. */
  width: 1280px; height: 720px;
  transform-origin: 50% 50%; overflow: hidden;
  background: #0b1030; box-shadow: 0 0 80px rgba(0,0,0,.8);
}
#game { display: block; width: 1280px; height: 720px; }  /* width set by resize() */

.layer {
  position: absolute; inset: 0;
  display: flex; flex-direction: column;
  align-items: center; justify-content: center;
}
.hide { display: none !important; }

.btn {
  pointer-events: auto; cursor: pointer;
  font-family: inherit; color: #fff; font-size: calc(17px * var(--ui)); letter-spacing: calc(1px * var(--ui));
  background: rgba(0,0,0,.42); border: calc(3px * var(--ui)) solid rgba(255,255,255,.8);
  border-radius: calc(12px * var(--ui)); padding: calc(12px * var(--ui)) calc(22px * var(--ui));
}
.btn:hover:not(:disabled) { background: rgba(255,255,255,.18); }
.btn:disabled { opacity: .45; cursor: default; }
.btn.wide { display: flex; margin: 0 auto calc(20px * var(--ui)); padding: calc(15px * var(--ui)) calc(30px * var(--ui)); border-color: var(--gold); color: var(--gold); }
/* Rewarded-ad buttons must show they open a video ad, per AdSense policy. */
.btn .adIcon { height: calc(20px * var(--ui)); width: auto; vertical-align: middle; flex: none; }
#shopAdCoins, .btn.wide { display: inline-flex; align-items: center; gap: calc(10px * var(--ui)); justify-content: center; }
.btn:disabled .adIcon { opacity: .6; }
.row { display: flex; gap: calc(14px * var(--ui)); justify-content: center; }

/* ---- menu ---- */
#menu { background: radial-gradient(circle at 50% 35%, rgba(20,40,140,.75), rgba(4,6,22,.94)); }
#title { font-size: calc(50px * var(--ui)); letter-spacing: calc(6px * var(--ui)); margin: 0 0 calc(2px * var(--ui));
  text-shadow: 0 0 26px #4dd0ff, 0 6px 0 #0a1a52, 0 10px 24px rgba(0,0,0,.6); }
#sub { margin: 0 0 calc(9px * var(--ui)); font-size: calc(16px * var(--ui)); letter-spacing: calc(5px * var(--ui)); opacity: .72; }
#diffRow { display: flex; gap: calc(10px * var(--ui)); margin-bottom: calc(10px * var(--ui)); }
.diffBtn {
  pointer-events: auto; cursor: pointer;
  font-family: inherit; font-size: calc(15px * var(--ui)); letter-spacing: calc(2px * var(--ui)); color: #fff;
  background: rgba(0,0,0,.4); border: calc(3px * var(--ui)) solid rgba(255,255,255,.28);
  border-radius: calc(11px * var(--ui)); padding: calc(16px * var(--ui)) calc(22px * var(--ui));
}
.diffBtn:hover { background: rgba(255,255,255,.12); }
.diffBtn.on { background: rgba(255,255,255,.14); }
#levelList { display: flex; gap: calc(16px * var(--ui)); }
#menuRow { margin-top: calc(14px * var(--ui)); }
.card {
  position: relative; width: calc(216px * var(--ui)); height: calc(176px * var(--ui));
  border: calc(4px * var(--ui)) solid #fff; border-radius: calc(18px * var(--ui)); cursor: pointer;
  color: #fff; font-family: inherit; text-align: left;
  padding: calc(18px * var(--ui)); display: flex; flex-direction: column; justify-content: flex-end;
  transition: transform .12s ease, box-shadow .12s ease;
  box-shadow: 0 10px 0 rgba(0,0,0,.45);
}
.card:hover { transform: translateY(-6px); box-shadow: 0 16px 0 rgba(0,0,0,.45); }
.card:active { transform: translateY(2px); box-shadow: 0 4px 0 rgba(0,0,0,.45); }
.cardNum { position: absolute; top: calc(12px * var(--ui)); left: calc(18px * var(--ui)); font-size: calc(54px * var(--ui)); opacity: .3; line-height: 1; }
.cardPrev {
  display: block; width: calc(180px * var(--ui)); height: calc(88px * var(--ui)); margin: 0 0 calc(8px * var(--ui));
  border-radius: 10px; background: rgba(0,0,0,.35);
  box-shadow: inset 0 0 0 2px rgba(255,255,255,.16);
}
.cardName { font-size: calc(25px * var(--ui)); letter-spacing: calc(1px * var(--ui)); }
.cardBest { position: absolute; top: calc(20px * var(--ui)); right: calc(18px * var(--ui)); font-size: calc(19px * var(--ui)); opacity: .9; }
#hint { margin-top: calc(10px * var(--ui)); font-size: calc(13px * var(--ui)); letter-spacing: calc(2px * var(--ui)); opacity: .55; }

#coinBar {
  position: absolute; top: calc(20px * var(--ui)); right: calc(26px * var(--ui));
  font-size: calc(24px * var(--ui)); color: var(--gold); letter-spacing: calc(1px * var(--ui));
  background: rgba(0,0,0,.4); border: calc(3px * var(--ui)) solid rgba(255,210,74,.55);
  border-radius: calc(14px * var(--ui)); padding: calc(6px * var(--ui)) calc(16px * var(--ui));
}
#coinBar i { font-style: normal; }

/* ---- hud ---- */
#hud { pointer-events: none; justify-content: flex-start; }
#endlessHud { position: absolute; top: calc(40px * var(--ui)); left: 50%; transform: translateX(-50%); text-align: center; }
#hudScore { font-size: calc(46px * var(--ui)); letter-spacing: calc(2px * var(--ui)); text-shadow: 0 0 18px rgba(0,0,0,.7), 0 3px 6px rgba(0,0,0,.8); }
#hudScore small { font-size: calc(20px * var(--ui)); opacity: .7; margin-left: calc(2px * var(--ui)); }
#hudSpeed { font-size: calc(15px * var(--ui)); opacity: .75; letter-spacing: calc(3px * var(--ui)); }
#hudName { position: absolute; top: calc(42px * var(--ui)); left: calc(26px * var(--ui)); font-size: calc(21px * var(--ui)); letter-spacing: calc(2px * var(--ui)); text-shadow: 0 3px 6px rgba(0,0,0,.7); }
#hudBest { position: absolute; top: calc(71px * var(--ui)); left: calc(26px * var(--ui)); font-size: calc(14px * var(--ui)); opacity: .78; }
/* The ship ceiling is painted across the top calc(28px * var(--ui)) of the playfield, complete
   with a glowing edge. HUD chrome has to clear it, and carry its own opaque
   background, or that bright line cuts straight through the buttons. */
#hudBtns { position: absolute; top: calc(40px * var(--ui)); right: calc(26px * var(--ui)); display: flex; gap: calc(10px * var(--ui)); }
#hudBtns .btn { background: rgba(4,8,26,.82); }
/* The exit button carries an icon rather than a word, so it needs its own
   square padding; the glyph tracks --ui like every other UI size. */
.iconBtn { padding: calc(11px * var(--ui)) calc(11px * var(--ui)); line-height: 0; }
.iconBtn svg { width: calc(24px * var(--ui)); height: calc(24px * var(--ui)); display: block; }

/* ---- dialogs ---- */
#result, #pause, #adWait { background: rgba(4,8,26,.86); }
/* The wait panel becomes tappable once the game offers a way past it; until
   then the prompt is hidden and the layer ignores taps. */
#adWait { pointer-events: none; }
#adWait.skippable { pointer-events: auto; cursor: pointer; }
.tapOut { margin: calc(14px * var(--ui)) 0 0 !important; font-size: calc(15px * var(--ui)); opacity: 0; transition: opacity .25s; }
#adWait.skippable .tapOut { opacity: .75; }
.panel {
  background: linear-gradient(160deg, #1b2a7a, #0a1140);
  border: calc(4px * var(--ui)) solid #7de3ff; border-radius: calc(22px * var(--ui));
  padding: calc(38px * var(--ui)) calc(56px * var(--ui)); text-align: center;
  box-shadow: 0 0 60px rgba(77,208,255,.35);
}
.panel h2 { margin: 0 0 calc(8px * var(--ui)); font-size: calc(42px * var(--ui)); letter-spacing: calc(3px * var(--ui)); text-shadow: 0 0 20px #4dd0ff; }
.panel p { margin: 0 0 calc(18px * var(--ui)); opacity: .8; letter-spacing: calc(2px * var(--ui)); }
#resCoins { font-size: calc(34px * var(--ui)); color: var(--gold); margin-bottom: calc(18px * var(--ui)); letter-spacing: calc(2px * var(--ui)); }
.pop { animation: coinPop .38s cubic-bezier(.2,1.6,.4,1); }
@keyframes coinPop {
  0%   { transform: scale(1);    text-shadow: none; }
  40%  { transform: scale(1.22); text-shadow: 0 0 24px var(--gold); }
  100% { transform: scale(1);    text-shadow: none; }
}
#resCoins i { font-style: normal; font-size: calc(26px * var(--ui)); }

/* ---- shop ---- */
#shop { background: linear-gradient(160deg, #0a1034, #04061a); justify-content: flex-start; }
#shopHead {
  width: 100%; display: flex; align-items: center; gap: calc(16px * var(--ui));
  padding: calc(12px * var(--ui)) calc(26px * var(--ui)) calc(8px * var(--ui));
}
#shopHead h2 { margin: 0; font-size: calc(28px * var(--ui)); letter-spacing: calc(4px * var(--ui)); flex: none; }
#shopCoins {
  flex: 1; font-size: calc(26px * var(--ui)); color: var(--gold); letter-spacing: calc(1px * var(--ui));
}
#shopCoins::after { content: ' \25C6'; }
#shopCoins.shake { animation: nope .35s; }
@keyframes nope { 0%,100% { transform: translateX(0); } 25% { transform: translateX(-7px); } 75% { transform: translateX(7px); } }
#shopGrid {
  width: 100%; flex: 1; overflow-y: auto; padding: calc(2px * var(--ui)) calc(26px * var(--ui)) calc(14px * var(--ui));
  display: grid; gap: calc(10px * var(--ui));
  /* Taller buy buttons mean taller cards, so the grid takes as many
     columns as the stage can hold rather than a fixed five; wide screens
     then keep every skin on one screen. */
  grid-template-columns: repeat(auto-fill, minmax(calc(150px * var(--ui)), 1fr));
  align-content: start;
}
.skin {
  border: calc(3px * var(--ui)) solid #445; border-radius: calc(14px * var(--ui)); padding: calc(5px * var(--ui));
  background: rgba(255,255,255,.05); text-align: center;
  display: flex; flex-direction: column; align-items: center; gap: calc(2px * var(--ui));
}
.skin canvas { width: calc(62px * var(--ui)); height: calc(62px * var(--ui)); display: block; }
.skinTier { font-size: calc(10px * var(--ui)); line-height: calc(12px * var(--ui)); letter-spacing: calc(2px * var(--ui)); }
.skinName { font-size: calc(13px * var(--ui)); line-height: calc(16px * var(--ui)); letter-spacing: calc(1px * var(--ui)); }
.skin .skinBtn { font-size: calc(14px * var(--ui)); line-height: calc(17px * var(--ui)); padding: calc(16px * var(--ui)) calc(12px * var(--ui)); margin-top: calc(1px * var(--ui)); border-width: calc(2px * var(--ui)); }
.skin.locked { opacity: .55; }
.skin.equipped { background: rgba(125,227,255,.16); box-shadow: 0 0 22px rgba(125,227,255,.35); }