:root{--bg:#070b1a;--panel:#111832;--accent:#4da3ff;--accent2:#ffd23f;--text:#eef2ff;--muted:#8b93b8}
*{box-sizing:border-box;-webkit-tap-highlight-color:transparent}
html,body{margin:0;height:100%;background:var(--bg);color:var(--text);font-family:Inter,system-ui,Segoe UI,Roboto,Arial,sans-serif;overflow-x:hidden}
#bg-stars{position:fixed;inset:0;background:radial-gradient(1px 1px at 20% 30%,#fff,transparent),radial-gradient(1px 1px at 70% 60%,#fff,transparent),radial-gradient(2px 2px at 40% 80%,#9df,transparent),radial-gradient(1px 1px at 85% 20%,#fff,transparent);opacity:.5;pointer-events:none}
#app{max-width:980px;margin:0 auto;min-height:100vh;display:flex;flex-direction:column}
#topbar{display:flex;align-items:center;justify-content:space-between;padding:12px 16px;position:sticky;top:0;background:rgba(7,11,26,.8);backdrop-filter:blur(10px);z-index:10;border-bottom:1px solid #1c2450}
.logo{font-weight:900;letter-spacing:2px;font-size:22px}.logo span,.hero h1 span{color:var(--accent2)}
#user-chip{display:flex;gap:10px;align-items:center;background:var(--panel);padding:6px 12px;border-radius:999px;border:1px solid #26305e}
#user-avatar{width:32px;height:32px;border-radius:50%;background:linear-gradient(135deg,#4da3ff,#b16dff);display:grid;place-items:center;font-weight:900}
.uinfo small{color:var(--muted)}
.hidden{display:none!important}
.pill-btn{background:#1a2350;color:var(--text);border:1px solid #2b3875;border-radius:999px;padding:8px 16px;cursor:pointer}
.pill-btn.small{font-size:13px;padding:6px 12px}
.icon-btn{background:#1a2350;border:1px solid #2b3875;color:#fff;border-radius:10px;padding:8px 12px;cursor:pointer}
.top-actions{display:flex;gap:8px;align-items:center}
.screen{display:none;padding:18px 16px 40px}.screen.active{display:block}
.hero{text-align:center;background:linear-gradient(180deg,#141c45,#0a0f2a);border:1px solid #26305e;border-radius:20px;padding:28px 18px}
.hero h1{font-size:64px;margin:0;letter-spacing:4px}
.tagline{color:var(--muted);margin:8px 0 18px}
.hero-btns{display:grid;grid-template-columns:repeat(auto-fit,minmax(160px,1fr));gap:10px;margin:10px 0}
.big-btn{background:#1c2658;border:1px solid #31408a;color:#fff;border-radius:14px;padding:14px;font-weight:800;cursor:pointer;font-size:15px}
.big-btn.primary{background:linear-gradient(135deg,#2f7bff,#6d4dff)}
.big-btn.online{background:linear-gradient(135deg,#00c896,#0088ff)}
.big-btn:active{transform:scale(.97)}
.row{display:flex;gap:10px;justify-content:center;margin-top:12px;flex-wrap:wrap}
.card-btn{background:var(--panel);border:1px solid #2b3875;color:#fff;border-radius:12px;padding:10px 16px;cursor:pointer}
.hint{color:var(--muted);font-size:13px;margin-top:14px}
.level-select-wrap{margin-top:18px}.level-select-wrap h3{letter-spacing:2px;color:var(--muted)}
#level-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(52px,1fr));gap:8px}
.lvl{aspect-ratio:1;border-radius:12px;border:1px solid #2b3875;background:#141b45;display:grid;place-items:center;font-weight:800;cursor:pointer}
.lvl.locked{opacity:.35;cursor:not-allowed}.lvl.done{background:linear-gradient(135deg,#00c896,#2f7bff)}
#game-screen{position:relative;padding:0}
#c{width:100%;height:72vh;display:block;background:#04060f;border-radius:0}
#hud{position:absolute;top:64px;left:12px;right:12px;display:flex;justify-content:space-between;align-items:center;pointer-events:none}
.hud-left b{text-shadow:0 2px 8px #000}#hud-progress{width:220px;max-width:40vw;height:8px;background:#222a5e;border-radius:99px;margin-top:6px;overflow:hidden}
#hud-bar{height:100%;width:0;background:linear-gradient(90deg,var(--accent),var(--accent2))}
.hud-right{display:flex;gap:10px;background:rgba(0,0,0,.5);padding:6px 12px;border-radius:99px}
#story-text{position:absolute;top:110px;left:0;right:0;text-align:center;font-size:clamp(18px,3.5vw,32px);text-shadow:0 2px 12px #000;padding:0 16px;pointer-events:none}
#center-msg{position:absolute;inset:0;display:grid;place-items:center;font-size:28px;font-weight:900;text-shadow:0 2px 16px #000;pointer-events:none;text-align:center;padding:20px}
#touch-controls{position:absolute;bottom:16px;left:0;right:0;display:none;justify-content:space-between;padding:0 18px}
#touch-controls button{width:72px;height:72px;border-radius:50%;font-size:24px;background:rgba(255,255,255,.15);border:1px solid rgba(255,255,255,.35);color:#fff}
@media(pointer:coarse){#touch-controls{display:flex}#c{height:78vh}}
#btn-quit{position:absolute;top:12px;right:12px}
#online-screen .panel{background:var(--panel);border:1px solid #2b3875;border-radius:16px;padding:18px}
.seg{display:flex;gap:8px;margin:8px 0 14px}.seg button{flex:1;padding:10px;border-radius:10px;border:1px solid #2b3875;background:#0f1540;color:#fff;cursor:pointer}.seg button.active{background:var(--accent);border-color:var(--accent)}
.lobby-row{display:flex;gap:10px;margin:10px 0}.lobby-row input{flex:1;padding:12px;border-radius:12px;border:1px solid #2b3875;background:#0a0f2a;color:#fff;font-size:20px;letter-spacing:6px;text-align:center}
.lobby-status{background:#0a0f2a;border-radius:12px;padding:12px;margin:10px 0;color:var(--muted)}
#room-players{display:flex;gap:8px;flex-wrap:wrap;margin:10px 0}.pchip{background:#0a0f2a;border:1px solid #2b3875;border-radius:99px;padding:6px 12px}
.modal{position:fixed;inset:0;background:rgba(0,0,0,.65);display:grid;place-items:center;z-index:50;padding:16px}
.modal-box{background:#10163a;border:1px solid #2b3875;border-radius:18px;padding:20px;max-width:560px;width:100%;max-height:85vh;overflow:auto}
.modal-box input{width:100%;padding:12px;margin:6px 0;border-radius:10px;border:1px solid #2b3875;background:#0a0f2a;color:#fff}
.tabs{display:flex;gap:8px;margin:10px 0}.tabs button{flex:1;padding:10px;border-radius:10px;border:1px solid #2b3875;background:#0a0f2a;color:#fff;cursor:pointer}.tabs button.active{background:var(--accent2);color:#111}
.shop-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(150px,1fr));gap:10px;margin:12px 0}
.shop-item{background:#0a0f2a;border:1px solid #2b3875;border-radius:12px;padding:12px;text-align:center}
.shop-item button{margin-top:8px;width:100%;padding:8px;border-radius:8px;border:0;background:var(--accent);color:#fff;font-weight:800;cursor:pointer}
.shop-item button.owned{background:#00c896}.muted{color:var(--muted)}.how li{margin:8px 0;line-height:1.5}