:root{font-family:system-ui,Avenir,Helvetica,Arial,sans-serif;line-height:1.5;font-weight:400;color-scheme:light dark;color:#ffffffde;background-color:#242424;font-synthesis:none;text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}a{font-weight:500;color:#646cff;text-decoration:inherit}a:hover{color:#535bf2}body{margin:0;display:flex;place-items:center;min-width:320px;min-height:100vh}h1{font-size:3.2em;line-height:1.1}button{border-radius:8px;border:1px solid transparent;padding:.6em 1.2em;font-size:1em;font-weight:500;font-family:inherit;background-color:#1a1a1a;cursor:pointer;transition:border-color .25s}button:hover{border-color:#646cff}button:focus,button:focus-visible{outline:4px auto -webkit-focus-ring-color}@media(prefers-color-scheme:light){:root{color:#213547;background-color:#fff}a:hover{color:#747bff}button{background-color:#f9f9f9}}:root{--bg-deep: #0f172a;--bg-surface: #0f172a;--accent: #38bdf8;--accent-glow: rgba(56, 189, 248, .3);--text-main: #f8fafc;--text-muted: #94a3b8;--danger: #ef4444;--warning: #fbbf24;--glass: rgba(30, 41, 59, .7)}*{box-sizing:border-box}html,body{margin:0;padding:0;position:fixed;overflow:hidden;width:100%;height:100%;background-color:var(--bg-deep);color:var(--text-main);font-family:Inter,sans-serif;touch-action:none}#root{width:100%;height:100%;display:flex;justify-content:center;align-items:center}.App{display:flex;flex-direction:column;align-items:center;justify-content:center;width:100%;max-width:500px;height:100dvh;margin:0 auto;padding:15px;touch-action:none;-webkit-user-select:none;user-select:none;box-sizing:border-box}main{display:flex;flex-direction:column;align-items:center;justify-content:center;width:100%}.game-header{display:flex;justify-content:space-between;align-items:center;width:100%;max-width:450px;margin-bottom:15px;padding:5px 10px;gap:10px;box-sizing:border-box}.header-left{display:flex;align-items:center;flex:1 1 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#334155;margin-bottom:25px;max-height:350px;overflow-y:auto;padding:10px}.leaderboard-item{display:flex;align-items:center;justify-content:space-between;padding:12px 15px;border-bottom:1px solid #1e293b}.leaderboard-item.highlight{background:#38bdf81a;border-left:3px solid #38bdf8}.leaderboard-item:last-child{border-bottom:none}.rank{font-weight:800;color:#94a3b8;width:25px}.user-info{display:flex;align-items:center;gap:12px;flex:1}.username{font-weight:600;color:#f3f4f6}.score{font-weight:800;color:#38bdf8;font-size:1.1rem}.profile-preview-row{display:flex;align-items:center;gap:15px;background:#111827;padding:15px;border-radius:16px;border:1px solid #334155;margin-bottom:20px;text-align:left}.preview-icon{background:#1e293b;padding:10px;border-radius:12px;display:flex;align-items:center;justify-content:center;border:1px solid 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rgba(56,189,248,.5);transform:scale(1.1)}.cell.hover-valid{background-color:#4caf5099!important;box-shadow:inset 0 0 10px #4caf50;outline:2px solid #22c55e}.cell.hover-invalid{background-color:#ef444480!important;box-shadow:inset 0 0 10px #f44336}.toast-notification{position:fixed;bottom:30px;left:50%;transform:translate(-50%);padding:12px 24px;border-radius:50px;display:flex;align-items:center;gap:10px;z-index:2000;font-weight:600;color:#fff;animation:slideUp .3s ease-out;box-shadow:0 10px 25px #0006}.toast-notification.success{background:#10b981;border:1px solid #34d399;box-shadow:0 0 15px #10b98166}.toast-notification.info{background:var(--bg-surface);border:1px solid var(--accent);color:var(--accent)}.toast-notification.error{background:var(--danger);border:1px solid #f87171}@keyframes slideUp{0%{bottom:0;opacity:0}to{bottom:30px;opacity:1}}.help-modal{text-align:left;max-width:360px}.help-step{display:flex;align-items:flex-start;gap:15px;margin-bottom:20px}.help-icon-box{background:#1e293b;padding:10px;border-radius:12px;border:1px solid #334155;flex-shrink:0}.help-step p{margin:0;font-size:.95rem;line-height:1.4;color:var(--text-main)}.game-over-tip{background:#ef44441a;padding:10px;border-radius:8px;border:1px solid rgba(239,68,68,.2);margin-bottom:20px;color:#f87171;text-align:center}.tutorial-container{display:flex;flex-direction:column;justify-content:center;align-items:center;flex:1;width:100%;animation:fadeIn .5s ease-in-out}.help-modal.standalone{background-color:#1e293b;border:2px solid var(--accent);box-shadow:0 0 30px var(--accent-glow);width:95%;max-width:400px}@keyframes fadeIn{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}@media(max-width:500px){.logo-image{max-height:45px}.score-display span{font-size:1.1rem}.inventory{gap:10px}}@media(max-width:360px){.logo-image{max-height:35px}.score-container{padding:3px 6px}.score-display span{font-size:1rem}.grid{padding:4px;gap:1px}}@media(max-width:340px){.icon-btn svg{width:16px;height:16px}.game-header{gap:5px}}