:root { color-scheme: dark; background: #081323; color: #f7f0dc; font-family: "IBM Plex Sans", system-ui, sans-serif; }
* { box-sizing: border-box; }
body { margin: 0; min-width: 320px; background: radial-gradient(circle at 50% -18%, #24475a, #081323 58%); }
button { font: inherit; }
.visually-hidden { clip: rect(0 0 0 0); clip-path: inset(50%); height: 1px; overflow: hidden; position: absolute; white-space: nowrap; width: 1px; }
.game-shell { margin: 0 auto; max-width: 1080px; padding: clamp(1rem, 3vw, 2rem) clamp(.875rem, 3vw, 2rem) 3rem; }
.game-header { align-items: end; display: flex; gap: 1rem 2rem; justify-content: space-between; margin-bottom: 1.1rem; }
.eyebrow { color: #9ee6cb; font-size: .7rem; font-weight: 700; letter-spacing: .14em; margin: 0 0 .45rem; text-transform: uppercase; }
h1, h2 { font-family: Fraunces, Georgia, serif; margin: 0; }
h1 { font-size: clamp(2.15rem, 5vw, 3.9rem); letter-spacing: -.045em; line-height: .95; }
.tagline { color: #b7c8c5; margin: .5rem 0 0; }
.scoreboard { display: flex; gap: clamp(.7rem, 3vw, 2rem); text-align: right; }
.scoreboard div { display: grid; gap: .15rem; min-width: 4rem; }
.scoreboard span { color: #91aead; font-size: .67rem; letter-spacing: .1em; text-transform: uppercase; }
.scoreboard strong { color: #fff0b6; font-size: 1.2rem; font-variant-numeric: tabular-nums; }
.play-wrap { background: #091a2c; border: 2px solid #9ee6cb; border-radius: 16px; box-shadow: 8px 8px 0 #063e49; overflow: hidden; position: relative; }
.stage-frame { aspect-ratio: 960 / 640; position: relative; }
#mosaic-canvas { cursor: pointer; display: block; height: 100%; image-rendering: auto; outline: none; touch-action: none; width: 100%; }
#mosaic-canvas:focus-visible { box-shadow: inset 0 0 0 4px #ffb85c; }
.start-card, .status-card, .pause-card { background: rgba(8, 19, 35, .95); border: 2px solid #fff0b6; border-radius: 14px; left: 50%; max-width: 420px; padding: 1.65rem; position: absolute; text-align: center; top: 50%; transform: translate(-50%, -50%); width: calc(100% - 2rem); }
.start-card h2, .status-card h2, .pause-card h2 { color: #fff0b6; font-size: clamp(1.75rem, 4vw, 2.8rem); margin-bottom: .75rem; }
.start-card p:not(.eyebrow), .status-card p:not(.eyebrow), .pause-card p:not(.eyebrow) { color: #d6e4dc; line-height: 1.55; margin: 0 0 1.3rem; }
[hidden] { display: none !important; }
.primary-button, .touch-controls button { background: #fff0b6; border: 2px solid #fff0b6; border-radius: 999px; color: #081323; cursor: pointer; font-weight: 700; padding: .65rem 1rem; }
.primary-button:hover, .touch-controls button:hover { background: #9ee6cb; border-color: #9ee6cb; }
.primary-button:focus-visible, .touch-controls button:focus-visible { outline: 3px solid #ffb85c; outline-offset: 3px; }
.controls-bar { align-items: center; display: grid; gap: 1rem; grid-template-columns: 8rem 1fr auto; margin: 1.5rem 0 2rem; }
.preview { align-items: center; display: grid; gap: .15rem; justify-items: center; }
.preview .eyebrow { margin: 0; }
#preview-canvas { background: #0d2638; border: 2px solid #286273; border-radius: 10px; display: block; height: 5.2rem; width: 5.2rem; }
#rotation-label { color: #91aead; font-size: .7rem; font-variant-numeric: tabular-nums; }
.phase-hint { color: #c8d6d0; line-height: 1.45; margin: 0; max-width: 34ch; }
.touch-controls { display: flex; flex-wrap: wrap; gap: .5rem; justify-content: end; }
.touch-controls button { background: #0d3042; border-color: #70c9b3; color: #f7f0dc; min-height: 2.8rem; }
.touch-controls button span { color: #9abbb3; font-size: .7rem; letter-spacing: .05em; text-transform: uppercase; }
.touch-controls .place-button { background: #9ee6cb; border-color: #9ee6cb; color: #081323; }
.instructions { border-top: 1px solid #2b5360; display: grid; gap: 1.1rem 2rem; grid-template-columns: 1fr 1fr; padding-top: 1.35rem; }
.instructions h2 { color: #fff0b6; font-size: clamp(1.5rem, 3vw, 2.2rem); }
.control-list { display: grid; gap: .6rem 1.1rem; grid-template-columns: 1fr 1fr; margin: 0; }
.control-list div { align-items: center; display: flex; gap: .55rem; justify-content: space-between; }
.control-list dt { white-space: nowrap; }
.control-list dd { color: #91aead; margin: 0; text-align: right; }
kbd { background: #0d3042; border: 1px solid #70c9b3; border-radius: 4px; color: #fff0b6; display: inline-block; font-size: .76rem; min-width: 1.55em; padding: .16em .32em; text-align: center; }
.instruction-note { color: #91aead; grid-column: 1 / -1; line-height: 1.5; margin: 0; }
.footer-note { color: #668e8d; font-size: .85rem; margin: 1.8rem 0 0; }
.footer-note a { color: #9ee6cb; }
@media (max-width: 700px) { .game-header { align-items: start; flex-direction: column; } .scoreboard { text-align: left; } .controls-bar { align-items: start; grid-template-columns: 6.5rem 1fr; } .touch-controls { grid-column: 1 / -1; justify-content: start; } .touch-controls button { flex: 1 1 6rem; } .instructions { grid-template-columns: 1fr; } .control-list { grid-template-columns: 1fr 1fr; } }
@media (max-width: 410px) { .game-shell { padding-inline: .7rem; } .scoreboard { gap: .8rem; } .scoreboard div { min-width: 3.4rem; } .controls-bar { gap: .7rem; grid-template-columns: 5.9rem 1fr; } .phase-hint { font-size: .9rem; } .control-list { gap: .55rem .45rem; } .control-list div { align-items: start; flex-direction: column; gap: .2rem; } .control-list dd { text-align: left; } }
@media (prefers-reduced-motion: reduce) { *, *::before, *::after { animation-duration: .01ms !important; scroll-behavior: auto !important; transition-duration: .01ms !important; } }