:root{--bg1:#10182f;--bg2:#263d72;--panel:rgba(255,255,255,.12);--text:#fff;--muted:rgba(255,255,255,.72);--accent:#ffd45c;--danger:#ff6b6b}*{box-sizing:border-box}html,body{margin:0;height:100%;overflow:hidden;background:radial-gradient(circle at top,#4567b6 0%,var(--bg2) 35%,var(--bg1) 100%);font-family:Arial,Helvetica,sans-serif;color:var(--text);-webkit-tap-highlight-color:transparent;user-select:none}.game{height:100dvh;display:flex;flex-direction:column;padding:env(safe-area-inset-top) 14px env(safe-area-inset-bottom);max-width:760px;margin:0 auto}.top{display:flex;align-items:center;justify-content:space-between;gap:10px;padding:10px 0}.brand{display:flex;flex-direction:column;line-height:1.05}.brand b{font-size:20px}.brand span{font-size:12px;color:var(--muted)}.pill{background:var(--panel);border:1px solid rgba(255,255,255,.18);border-radius:999px;padding:8px 11px;backdrop-filter:blur(8px);font-weight:700}.controls{display:flex;gap:8px;flex-wrap:wrap;justify-content:center;padding:4px 0 10px}button,.home{border:0;border-radius:14px;background:rgba(255,255,255,.16);color:#fff;padding:10px 12px;font-weight:800;box-shadow:0 6px 0 rgba(0,0,0,.18);text-decoration:none;font-size:14px}button:active,.home:active{transform:translateY(3px);box-shadow:0 3px 0 rgba(0,0,0,.18)}button.primary{background:linear-gradient(180deg,#ffe682,#ffb72e);color:#392300}button.danger{background:linear-gradient(180deg,#ff9a9a,#ff5a5a);color:#3c0000}.message{min-height:30px;text-align:center;color:#fff;font-size:15px;font-weight:700;text-shadow:0 2px 3px rgba(0,0,0,.25)}.board{flex:1;display:grid;grid-template-columns:repeat(4,1fr);align-content:center;justify-items:center;gap:22px 12px;padding:8px 0 26px}.tube{width:min(18vw,82px);height:min(38vw,172px);max-height:178px;min-height:122px;position:relative;border-radius:0 0 32px 32px;border:5px solid rgba(255,255,255,.82);border-top:0;background:linear-gradient(90deg,rgba(255,255,255,.18),rgba(255,255,255,.04));box-shadow:inset 0 0 18px rgba(255,255,255,.14),0 14px 22px rgba(0,0,0,.24);display:flex;flex-direction:column-reverse;overflow:hidden;transition:.18s transform,.18s filter}.tube:before{content:"";position:absolute;left:-8px;right:-8px;top:-12px;height:18px;border:5px solid rgba(255,255,255,.82);border-bottom:0;border-radius:18px 18px 0 0;background:rgba(255,255,255,.08);z-index:3}.tube:after{content:"";position:absolute;left:13%;top:7%;width:20%;height:82%;border-radius:30px;background:linear-gradient(180deg,rgba(255,255,255,.42),rgba(255,255,255,0));z-index:2;pointer-events:none}.tube.selected{transform:translateY(-20px) scale(1.04);filter:drop-shadow(0 0 14px #ffe17a)}.tube.hint{animation:pulse .8s ease-in-out 2}.water{height:25%;width:100%;position:relative;border-top:1px solid rgba(255,255,255,.32);transition:.25s}.water:before{content:"";position:absolute;left:0;right:0;top:-6px;height:12px;border-radius:50%;background:rgba(255,255,255,.22)}.empty-text{position:absolute;left:0;right:0;bottom:42%;font-size:11px;text-align:center;color:rgba(255,255,255,.35);font-weight:700}.overlay{position:fixed;inset:0;display:none;align-items:center;justify-content:center;background:rgba(0,0,0,.58);padding:22px;z-index:10}.card{width:min(92vw,430px);background:linear-gradient(180deg,#fff,#e9efff);color:#142142;border-radius:28px;padding:26px;text-align:center;box-shadow:0 22px 60px rgba(0,0,0,.42)}.card h1{margin:0 0 8px;font-size:30px}.card p{margin:8px 0 18px;color:#42506f}.adbox{margin:8px auto 0;max-width:360px;min-height:54px;border:2px dashed rgba(255,255,255,.25);border-radius:16px;display:flex;align-items:center;justify-content:center;color:rgba(255,255,255,.5);font-size:12px}@keyframes pulse{50%{transform:translateY(-12px) scale(1.04)}}@media (max-width:380px){.board{gap:18px 8px}.tube{width:20vw}.brand b{font-size:18px}button,.home{padding:9px 10px;font-size:13px}}@media (orientation:landscape) and (max-height:520px){.game{max-width:none}.top{padding:6px 0}.controls{position:fixed;right:8px;top:58px;width:130px;z-index:4}.board{grid-template-columns:repeat(8,1fr);padding-right:140px;gap:12px 8px}.tube{width:min(8vw,60px);height:min(54vh,155px)}}