:root {
  color-scheme: dark;
  --ink: #fff2fb;
  --muted: #c3abc3;
  --line: rgba(255, 121, 221, 0.25);
  --panel: rgba(20, 7, 29, 0.78);
  --pink: #ff4faf;
  --cyan: #55f7ff;
  --yellow: #ffe45c;
  --void: #08020d;
}

* { box-sizing: border-box; }

body {
  min-width: 320px;
  min-height: 100vh;
  margin: 0;
  color: var(--ink);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background:
    radial-gradient(circle at 89% 5%, rgba(255, 79, 175, 0.29), transparent 30rem),
    radial-gradient(circle at 6% 88%, rgba(85, 247, 255, 0.16), transparent 28rem),
    var(--void);
}

button, a { font: inherit; }
button { touch-action: manipulation; }

.game-shell { width: min(100% - 2rem, 1100px); margin: 0 auto; padding: 1.75rem 0 2.5rem; }
.masthead { display: flex; align-items: baseline; justify-content: space-between; gap: 1.5rem; margin-bottom: 1.25rem; }
.brand { color: var(--ink); font-size: clamp(1.25rem, 2vw, 1.7rem); font-weight: 950; letter-spacing: -.07em; text-decoration: none; text-shadow: 0 0 1.3rem rgba(255, 79, 175, .68); }
.masthead p { margin: 0; color: var(--muted); font-size: .84rem; }

.game-frame { position: relative; min-height: min(68vh, 680px); overflow: hidden; border: 1px solid var(--line); border-radius: 1.25rem; background: #08020d; box-shadow: 0 1.4rem 5rem rgba(0, 0, 0, .45), inset 0 0 4rem rgba(255, 79, 175, .08); }
#game-canvas { display: block; width: 100%; height: min(68vh, 680px); min-height: 440px; outline: none; }

.hud { position: absolute; inset: 1rem 1rem auto; display: grid; grid-template-columns: auto auto minmax(12rem, 1fr); align-items: start; gap: .65rem; pointer-events: none; }
.stat-card, .route-card { padding: .65rem .8rem; border: 1px solid rgba(255, 218, 249, .18); border-radius: .65rem; background: rgba(8, 2, 13, .53); backdrop-filter: blur(8px); }
.stat-card { min-width: 5.8rem; }
.hud span { display: block; color: var(--muted); font-size: .6rem; font-weight: 850; letter-spacing: .13em; text-transform: uppercase; }
.hud strong { display: block; margin-top: .1rem; font-size: 1.1rem; letter-spacing: .025em; }
.stat-card strong { color: var(--cyan); }
.stat-card:nth-child(2) strong { color: var(--yellow); }
.route-card { justify-self: end; max-width: 20rem; }
.route-card strong { color: var(--pink); font-size: .86rem; }
.route-card p { margin: .24rem 0 0; color: var(--ink); font-size: .72rem; }
.signal-message { position: absolute; right: 1rem; bottom: 1rem; max-width: 24rem; margin: 0; padding: .55rem .7rem; color: var(--ink); border: 1px solid rgba(255, 218, 249, .16); border-radius: .5rem; background: rgba(8, 2, 13, .52); font-size: .74rem; line-height: 1.4; }

.game-overlay { position: absolute; inset: 0; display: grid; place-content: center; justify-items: center; padding: 2rem; text-align: center; background: radial-gradient(circle, rgba(38, 9, 50, .2), rgba(6, 2, 11, .78)); transition: opacity .25s ease, visibility .25s ease; }
.game-overlay.is-hidden { visibility: hidden; opacity: 0; pointer-events: none; }
.eyebrow { margin: 0 0 .65rem; color: var(--yellow); font-size: .68rem; font-weight: 850; letter-spacing: .16em; }
.game-overlay h1 { max-width: 10ch; margin: 0; font-size: clamp(2.8rem, 7vw, 5.3rem); line-height: .86; letter-spacing: -.08em; }
.game-overlay p:not(.eyebrow) { max-width: 36rem; margin: 1.25rem auto 1.65rem; color: var(--muted); line-height: 1.55; }
.game-overlay button, .touch-controls button { border: 1px solid rgba(255, 255, 255, .24); border-radius: .6rem; cursor: pointer; font-weight: 900; }
.game-overlay button { padding: .8rem 1.15rem; color: #230116; background: var(--pink); box-shadow: 0 .5rem 1.6rem rgba(255, 79, 175, .28); }
.game-overlay button:hover { color: #051a1c; background: var(--cyan); }

.instructions { display: grid; grid-template-columns: 1fr auto; gap: 2rem; align-items: center; margin-top: 1.25rem; padding: 1.35rem 1.45rem; border: 1px solid var(--line); border-radius: 1rem; background: var(--panel); }
.instructions h2 { margin: 0; font-size: 1.35rem; letter-spacing: -.04em; }
.instructions p:not(.eyebrow) { max-width: 43rem; margin: .5rem 0 0; color: var(--muted); line-height: 1.5; }
.touch-controls { display: grid; grid-template-columns: repeat(3, 2.8rem); grid-template-areas: ". up ." "left down right"; gap: .35rem; }
.touch-controls button { min-height: 2.5rem; padding: .35rem; color: var(--ink); background: #260d37; }
.touch-controls button:hover, .touch-controls button:active { color: #051a1c; background: var(--cyan); }
.touch-controls button[data-direction="up"] { grid-area: up; }
.touch-controls button[data-direction="left"] { grid-area: left; }
.touch-controls button[data-direction="down"] { grid-area: down; }
.touch-controls button[data-direction="right"] { grid-area: right; }
.footer-note { margin: 1rem 0 0; color: #906a90; font-size: .78rem; text-align: center; }

@media (max-width: 720px) {
  .game-shell { width: min(100% - 1rem, 1100px); padding-top: 1rem; }
  .masthead p { display: none; }
  .game-frame, #game-canvas { min-height: 500px; height: 70vh; }
  .hud { grid-template-columns: auto auto; }
  .route-card { grid-column: 1 / -1; justify-self: start; max-width: 100%; }
  .signal-message { left: 1rem; right: 1rem; max-width: none; }
  .instructions { grid-template-columns: 1fr; gap: 1.25rem; }
  .touch-controls { justify-self: center; }
}