:root{color-scheme:dark;font-family:Segoe UI,system-ui,-apple-system,sans-serif;line-height:1.5}*{box-sizing:border-box;margin:0;padding:0}html,body,#root{min-height:100vh;background:#1a1a2e;color:#fafafa;overflow-x:hidden}.app{min-height:100vh;display:flex;flex-direction:column;align-items:center;padding:1rem;max-width:480px;margin:0 auto;position:relative;background:linear-gradient(180deg,#16213e,#1a1a2e 40%,#0f3460)}.splash{display:flex;flex-direction:column;align-items:center;justify-content:center;min-height:100vh;text-align:center;gap:1.5rem}.splash-title{font-size:2.8rem;font-weight:800;letter-spacing:.12em;background:linear-gradient(135deg,#e94560,#f5a623,#e94560);background-size:200% 200%;-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;animation:shimmer 3s ease infinite}@keyframes shimmer{0%,to{background-position:0% 50%}50%{background-position:100% 50%}}.splash-sub{color:#fff9;font-size:1.05rem}.btn-play{background:linear-gradient(135deg,#e94560,#c23152);color:#fff;border:none;padding:.9rem 3rem;border-radius:2rem;font-size:1.1rem;font-weight:700;letter-spacing:.15em;cursor:pointer;transition:transform .15s,box-shadow .15s;box-shadow:0 4px 20px #e9456066}.btn-play:hover{transform:scale(1.05);box-shadow:0 6px 28px #e945608c}.btn-play:active{transform:scale(.97)}.header{width:100%;padding:.5rem 0 .75rem;display:flex;justify-content:center}.level-info{display:flex;align-items:center;gap:1rem}.level-label{font-size:1rem;font-weight:700;color:#ffffffd9}.word-count{background:#ffffff1a;padding:.25rem .75rem;border-radius:1rem;font-size:.85rem;font-weight:600;color:#ffffffb3}.word-grid{flex:1;display:flex;flex-direction:column;align-items:center;gap:.6rem;padding:1rem 0;width:100%;max-height:35vh;overflow-y:auto}.word-row{display:flex;align-items:center;gap:.5rem;flex-wrap:wrap;justify-content:center}.row-label{font-size:.65rem;text-transform:uppercase;letter-spacing:.1em;color:#ffffff4d;min-width:55px;text-align:right}.word-slots{display:flex;gap:.5rem;flex-wrap:wrap}.word-slot{display:flex;gap:3px;padding:4px 6px;border-radius:6px;transition:background .3s}.word-slot.found{background:#50c87826;animation:popIn .35s ease}@keyframes popIn{0%{transform:scale(.8);opacity:0}60%{transform:scale(1.08)}to{transform:scale(1);opacity:1}}.slot-char{display:flex;align-items:center;justify-content:center;width:28px;height:32px;border-radius:4px;font-weight:700;font-size:.9rem;text-transform:uppercase}.slot-char.empty{background:#ffffff14;border:1.5px solid rgba(255,255,255,.12)}.slot-char.filled{background:linear-gradient(135deg,#50c878,#3aaf65);color:#fff;border:none;animation:letterPop .25s ease}@keyframes letterPop{0%{transform:scale(0)}70%{transform:scale(1.15)}to{transform:scale(1)}}.current-word{min-height:2.5rem;display:flex;align-items:center;justify-content:center;font-size:1.6rem;font-weight:800;letter-spacing:.15em;color:#fff;text-transform:uppercase;transition:color .2s}.current-word.flash-correct{color:#50c878}.current-word.flash-wrong{color:#e94560}.current-word.shake{animation:shake .4s ease}@keyframes shake{0%,to{transform:translate(0)}20%{transform:translate(-8px)}40%{transform:translate(8px)}60%{transform:translate(-5px)}80%{transform:translate(5px)}}.letter-circle-container{display:flex;align-items:center;justify-content:center;padding:1rem 0}.letter-circle{position:relative;width:300px;height:300px}.letter-tile{position:absolute;border:none;border-radius:50%;background:linear-gradient(145deg,#2a2a4a,#1e1e3a);color:#f0f0f0;font-size:1.3rem;font-weight:800;cursor:pointer;display:flex;align-items:center;justify-content:center;text-transform:uppercase;transition:all .15s ease;box-shadow:0 4px 12px #0000004d,inset 0 1px #ffffff14;-webkit-user-select:none;user-select:none;-webkit-tap-highlight-color:transparent}.letter-tile:hover:not(.selected){background:linear-gradient(145deg,#3a3a6a,#2a2a5a);transform:scale(1.08)}.letter-tile:active{transform:scale(.95)}.letter-tile.selected{background:linear-gradient(145deg,#e94560,#c23152);color:#fff;transform:scale(1.1);box-shadow:0 4px 20px #e9456080,inset 0 1px #ffffff26}.actions{display:flex;gap:1.5rem;align-items:center;padding:.5rem 0 1.5rem}.btn-action{width:52px;height:52px;border-radius:50%;border:2px solid rgba(255,255,255,.15);background:#ffffff0d;color:#ffffffb3;cursor:pointer;display:flex;align-items:center;justify-content:center;transition:all .15s}.btn-action:hover{background:#ffffff1a;border-color:#ffffff40;color:#fff}.btn-action:active{transform:scale(.92)}.btn-submit{width:64px;height:64px;background:linear-gradient(135deg,#e94560,#c23152);border:none;color:#fff;box-shadow:0 4px 16px #e9456066}.btn-submit:hover{background:linear-gradient(135deg,#f05a73,#d04060);border-color:transparent}.overlay{position:fixed;top:0;right:0;bottom:0;left:0;background:#000000b3;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);display:flex;align-items:center;justify-content:center;z-index:100;animation:fadeIn .3s ease}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}.overlay-card{background:linear-gradient(145deg,#1e2a4a,#16213e);border:1px solid rgba(255,255,255,.1);border-radius:1.5rem;padding:2.5rem 3rem;text-align:center;display:flex;flex-direction:column;align-items:center;gap:1rem;animation:slideUp .4s ease}@keyframes slideUp{0%{transform:translateY(30px);opacity:0}to{transform:translateY(0);opacity:1}}.overlay-card h2{font-size:1.8rem;font-weight:800;color:#50c878}.overlay-sub{color:#fff9;font-size:1rem}@media(max-height:700px){.letter-circle{width:250px;height:250px}.letter-tile{width:48px!important;height:48px!important;font-size:1.1rem}.current-word{font-size:1.3rem;min-height:2rem}.word-grid{max-height:28vh}}@media(max-height:580px){.letter-circle{width:200px;height:200px}.letter-tile{width:40px!important;height:40px!important;font-size:1rem}}