:root{--pink:#ff4fc3;--cyan:#50e7ff;--gold:#ffd66d;--violet:#8f68ff}
*{box-sizing:border-box}html,body{height:100%}body{margin:0;overflow:hidden;background:#03030a;color:#f3f3ff;font-family:Inter,ui-sans-serif,system-ui,sans-serif}
#arena{height:calc(100dvh - var(--ah-shell-height,68px));padding:10px 14px 14px}
#gameHud{position:relative;z-index:3;display:grid;grid-template-columns:minmax(140px,1.2fr) repeat(4,auto) repeat(3,minmax(80px,.7fr));align-items:center;gap:10px;min-height:58px;padding:8px 11px;border:1px solid rgba(255,79,195,.25);border-radius:13px 13px 4px 4px;background:linear-gradient(180deg,#18101f,#090811);box-shadow:0 12px 35px rgba(0,0,0,.45)}
#gameHud small{display:block;color:#8a7592;font-size:.46rem;font-weight:900;letter-spacing:.12em;text-transform:uppercase}#gameHud strong{font-size:.82rem}.run-title strong{display:block;margin-top:2px;color:#ffc8ed}.chain strong{color:var(--gold)}
.hud-bar span{display:block;height:5px;margin-top:4px;overflow:hidden;border-radius:10px;background:#282031}.hud-bar i{display:block;width:100%;height:100%;border-radius:inherit;background:linear-gradient(90deg,var(--pink),var(--cyan));transition:width .18s}#gameHud button{display:none}
#stage{position:relative;height:calc(100% - 66px);overflow:hidden;border:1px solid rgba(255,79,195,.24);border-radius:4px 4px 15px 15px;background:#020208;box-shadow:inset 0 0 90px #000}canvas{display:block;width:100%;height:100%;touch-action:none}
#announcement{position:absolute;top:16%;left:50%;padding:9px 17px;border:1px solid rgba(255,79,195,.3);border-radius:999px;background:rgba(17,7,22,.76);color:#ffc9ee;font-size:.62rem;font-weight:950;letter-spacing:.15em;text-transform:uppercase;opacity:0;transform:translate(-50%,-8px);transition:.25s;pointer-events:none}#announcement.show{opacity:1;transform:translate(-50%,0)}
#startScreen,#upgradeScreen{position:fixed;z-index:30;inset:var(--ah-shell-height,68px) 0 0;display:grid;place-items:center;padding:20px;background:radial-gradient(circle at 18% 30%,rgba(255,38,188,.12),transparent 32%),radial-gradient(circle at 82% 66%,rgba(44,214,255,.13),transparent 34%),rgba(3,2,10,.94);backdrop-filter:blur(9px)}#startScreen[hidden],#upgradeScreen[hidden]{display:none}
.start-panel,.upgrade-panel{width:min(790px,94vw);padding:clamp(25px,5vw,48px);border:1px solid rgba(255,79,195,.28);border-radius:23px;background:linear-gradient(145deg,rgba(26,12,34,.98),rgba(7,7,16,.98));box-shadow:0 35px 115px rgba(0,0,0,.72),0 0 80px rgba(255,55,190,.06);text-align:center}.start-panel>p:first-child,.upgrade-panel>p{margin:0;color:var(--pink);font-size:.58rem;font-weight:950;letter-spacing:.27em;text-transform:uppercase}.start-panel h1{margin:10px 0 0;font-size:clamp(3.2rem,9vw,6.3rem);line-height:.82;letter-spacing:.06em;text-transform:uppercase;text-shadow:0 0 35px rgba(255,79,195,.24)}.start-panel h2{margin:13px 0 0;color:var(--cyan);font-size:clamp(.85rem,2vw,1.2rem);letter-spacing:.43em;text-transform:uppercase}.ship-mark{position:relative;width:120px;height:46px;margin:22px auto}.ship-mark b{position:absolute;left:50%;top:0;width:24px;height:42px;background:linear-gradient(var(--cyan),#fff);clip-path:polygon(50% 0,100% 100%,50% 78%,0 100%);transform:translateX(-50%);filter:drop-shadow(0 0 12px var(--cyan))}.ship-mark i{position:absolute;top:17px;width:45px;height:4px;background:var(--pink);box-shadow:0 0 12px var(--pink)}.ship-mark i:first-child{left:0;transform:rotate(-17deg)}.ship-mark i:last-child{right:0;transform:rotate(17deg)}
.brief{max-width:590px;margin:0 auto 21px;color:#aa9caf;line-height:1.65}.difficulty{display:grid;grid-template-columns:repeat(3,1fr);gap:10px}.difficulty button{display:grid;gap:6px;padding:14px;border:1px solid #392b43;border-radius:12px;background:#100b16;color:white;cursor:pointer}.difficulty button.selected{border-color:var(--pink);background:rgba(255,79,195,.08);box-shadow:0 0 22px rgba(255,79,195,.08)}.difficulty b{font-size:.8rem}.difficulty span{color:#887a90;font-size:.58rem}.controls{display:flex;justify-content:center;gap:24px;margin:20px 0;color:#84768d;font-size:.63rem}.controls b{color:#fff}.start-run{padding:14px 28px;border:1px solid #ff7bd3;border-radius:999px;background:linear-gradient(100deg,#ff3ebd,#6558ff);color:white;font-weight:950;letter-spacing:.08em;text-transform:uppercase;cursor:pointer}
.upgrade-panel h2{margin:8px 0 24px;font-family:Georgia,serif;font-size:clamp(2.1rem,5vw,3.3rem);font-weight:400}#upgradeCards{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}#upgradeCards button{display:grid;align-content:start;gap:8px;min-height:175px;padding:20px 16px;border:1px solid #41304d;border-radius:14px;background:linear-gradient(145deg,#1a1022,#090a12);color:#fff;text-align:left;cursor:pointer;transition:.2s}#upgradeCards button:hover{border-color:var(--pink);transform:translateY(-3px)}#upgradeCards i{color:var(--cyan);font-style:normal;font-size:1.7rem}#upgradeCards strong{font-size:.88rem}#upgradeCards span{color:#96899d;font-size:.67rem;line-height:1.5}
#touchPad{display:none}
@media(max-width:850px){#arena{padding:5px}#gameHud{grid-template-columns:1fr repeat(3,auto);gap:5px;min-height:50px}.run-title,.hud-bar,#gameHud>div:nth-of-type(4){display:none}#gameHud button{padding:7px;font-size:.5rem}#stage{height:calc(100% - 55px)}#touchPad{position:absolute;inset:0;display:block;pointer-events:none}#touchPad span{position:absolute;bottom:18px;left:18px;display:grid;place-items:center;width:90px;height:90px;border:1px solid rgba(255,255,255,.14);border-radius:50%;color:#6d6575;font-size:.55rem}#touchPad button{position:absolute;right:24px;bottom:26px;width:76px;height:76px;border:1px solid rgba(255,79,195,.35);border-radius:50%;background:rgba(255,79,195,.1);color:#ffc8ed;font-weight:900}}
@media(max-width:600px){.start-panel{max-height:calc(100dvh - 95px);overflow:auto}.start-panel h1{font-size:2.8rem}.difficulty,#upgradeCards{grid-template-columns:1fr}.difficulty button{padding:10px}.controls{flex-wrap:wrap;gap:8px 16px}#upgradeCards button{min-height:0}.upgrade-panel{max-height:90%;overflow:auto}}