@import"https://fonts.googleapis.com/css2?family=JetBrains+Mono:wght@400;500;700&family=Orbitron:wght@500;700;900&display=swap";:root{--bg: #0A0014;--surface: #1A0028;--primary: #00F5FF;--primary-dark: #00C2D1;--accent: #FF006E;--text: #F0F0FF;--text-muted: #A8A8C8;--border: #2A1845;--success: #10B981;--warning: #F59E0B;--danger: #FF006E;--radius: 4px;--shadow: 0 12px 36px rgba(0,0,0,.4), 0 0 28px #00F5FF26}body{margin:0;padding:0;overflow:hidden;background:linear-gradient(135deg,#0a0014,#1a0028),repeating-linear-gradient(0deg,transparent,transparent 39px,#00F5FF11 40px),repeating-linear-gradient(90deg,transparent,transparent 39px,#FF006E08 40px),var(--bg);color:var(--text);font-family:JetBrains Mono,SF Mono,Consolas,monospace;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;display:flex;justify-content:center;align-items:center;height:100vh;width:100vw}#root{width:100%;height:100%}.game-container{position:relative;width:100%;height:100%;overflow:hidden;display:flex;justify-content:center;align-items:center;background-color:var(--bg)}.game-canvas{position:absolute;top:0;left:0;width:100%;height:100%;z-index:0;background-color:var(--bg)}.cloud-message{position:absolute;top:20px;left:50%;transform:translate(-50%);background:#2a1845cc;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);padding:8px 15px;border-radius:var(--radius);color:var(--text-muted);font-size:.85em;display:flex;align-items:center;gap:8px;z-index:1000;box-shadow:var(--shadow)}.icon-cloud{color:var(--primary)}.start-screen,.game-over-screen{position:absolute;top:0;left:0;width:100%;height:100%;display:flex;flex-direction:column;justify-content:center;align-items:center;background:var(--bg);z-index:10;text-align:center}.start-screen-bg-image,.game-over-bg-image{position:absolute;top:0;left:0;width:100%;height:100%;object-fit:cover;opacity:.3;z-index:-1}.start-screen-bg-fallback,.game-over-bg-fallback{font-size:100px;position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);opacity:.2;z-index:-1}.game-title,.game-over-title{font-family:Orbitron,sans-serif;font-size:clamp(2.5em,8vw,4.5em);color:var(--primary);text-shadow:0 0 20px var(--primary),0 0 40px var(--accent);margin-bottom:30px;line-height:1.2}.loading-indicator{font-size:1.2em;color:var(--text-muted);margin-top:20px}.high-score-display{font-size:1.2em;color:var(--text-muted);margin-bottom:20px;display:flex;align-items:center;gap:10px}.icon-trophy{color:var(--warning)}.start-button,.retry-button,.keyboard-help-button{background:linear-gradient(90deg,var(--primary),var(--accent));border:none;border-radius:var(--radius);padding:15px 30px;font-family:Orbitron,sans-serif;font-size:1.2em;color:var(--bg);cursor:pointer;box-shadow:0 0 20px var(--primary),0 0 10px var(--accent);transition:all .3s ease;margin-top:20px;display:flex;align-items:center;gap:10px}.start-button:hover,.retry-button:hover,.keyboard-help-button:hover{box-shadow:0 0 30px var(--primary),0 0 15px var(--accent);transform:translateY(-2px)}.icon-play,.icon-retry{color:var(--bg)}.keyboard-help-button{background:var(--surface);color:var(--text);box-shadow:0 0 10px #00f5ff4d;margin-top:10px}.keyboard-help-button:hover{box-shadow:0 0 15px #00f5ff80}.keyboard-help-modal{background:#1a0028e6;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border-radius:var(--radius);padding:25px;margin-top:20px;box-shadow:var(--shadow);max-width:350px;text-align:left;border:1px solid var(--border)}.keyboard-help-modal h3{font-family:Orbitron,sans-serif;color:var(--primary);text-shadow:0 0 8px var(--primary);margin-top:0;margin-bottom:15px;font-size:1.3em}.keyboard-help-modal p{margin-bottom:8px;color:var(--text);font-size:.95em}.keyboard-help-modal p strong{color:var(--accent)}.game-ui-overlay{position:absolute;top:0;left:0;width:100%;height:100%;z-index:1;display:flex;flex-direction:column;justify-content:space-between;padding:20px;pointer-events:none}.game-header{display:flex;justify-content:space-between;align-items:center;width:100%;padding:0 20px;pointer-events:auto}.score-display,.level-display{font-family:Orbitron,sans-serif;font-size:1.8em;color:var(--primary);text-shadow:0 0 10px var(--primary)}.lives-display{display:flex;gap:5px}.heart-icon{filter:drop-shadow(0 0 5px var(--danger))}.question-area{display:flex;flex-direction:column;align-items:center;justify-content:center;background:#1a0028cc;-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);border-radius:var(--radius);padding:20px 30px;margin:auto;box-shadow:var(--shadow);border:1px solid var(--border);pointer-events:auto}.question-text{font-family:Orbitron,sans-serif;font-size:clamp(1.8em,5vw,3em);color:var(--text);text-shadow:0 0 15px var(--accent);margin-bottom:15px}.timer-bar-container{width:100%;height:10px;background-color:var(--border);border-radius:5px;overflow:hidden;margin-top:10px;position:relative}.timer-bar{height:100%;background-color:var(--primary);border-radius:5px;box-shadow:0 0 8px var(--primary)}.timer-text{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);font-size:.8em;color:var(--bg);font-weight:700;text-shadow:none}.calculator-input{width:100%;display:flex;justify-content:center;padding:0 20px;pointer-events:auto}.current-input{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);color:var(--primary);font-family:JetBrains Mono,monospace;font-size:2em;text-align:right;padding:10px 15px;width:100%;max-width:300px;box-shadow:inset 0 0 10px #00f5ff33;outline:none;text-shadow:0 0 5px var(--primary)}.current-input::placeholder{color:var(--text-muted);font-size:.8em;text-shadow:none}.calculator-buttons{display:grid;grid-template-columns:repeat(4,1fr);gap:10px;width:100%;max-width:300px;margin:20px auto 0;padding:0 20px 20px;pointer-events:auto}.calc-button{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);color:var(--text);font-family:JetBrains Mono,monospace;font-size:1.5em;padding:15px 0;cursor:pointer;box-shadow:0 0 5px #00f5ff1a;transition:all .2s ease;outline:none}.calc-button:hover{background:var(--border);box-shadow:0 0 15px var(--primary);color:var(--primary)}.calc-button:active{transform:scale(.98);box-shadow:0 0 8px var(--primary)}.op-button{background:var(--primary);color:var(--bg);box-shadow:0 0 10px var(--primary);text-shadow:0 0 5px var(--bg)}.op-button:hover{background:var(--primary-dark);box-shadow:0 0 20px var(--primary);color:var(--bg)}.large-button{grid-column:span 2}.game-over-screen{background:var(--bg)}.game-over-screen .game-over-title{color:var(--danger);text-shadow:0 0 20px var(--danger),0 0 40px var(--accent)}.game-over-screen .final-score{font-size:1.5em;color:var(--text);margin-top:20px;text-shadow:0 0 8px var(--text)}.game-over-screen .new-high-score{font-family:Orbitron,sans-serif;font-size:1.8em;color:var(--warning);text-shadow:0 0 15px var(--warning);margin-top:10px}.game-over-screen .high-score-display{font-size:1.1em;margin-top:10px}.score-pop{position:absolute;font-family:Orbitron,sans-serif;font-size:1.8em;font-weight:700;color:var(--success);text-shadow:0 0 10px var(--success);pointer-events:none;white-space:nowrap;transform:translate(-50%,-50%);z-index:5}@media (max-width: 600px){.game-title,.game-over-title{font-size:2.5em}.start-button,.retry-button,.keyboard-help-button{padding:12px 25px;font-size:1em}.high-score-display{font-size:1em}.question-text{font-size:1.8em}.current-input{font-size:1.5em;max-width:250px}.calculator-buttons{max-width:250px}.calc-button{font-size:1.2em;padding:12px 0}.keyboard-help-modal{max-width:90%;padding:15px}}