@import url("https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800&display=swap");:root{--primary:#4f46e5;--primary-hover:#4338ca;--bg-color:#f8f9ff;--card-bg:#ffffff;--text-primary:#111827;--text-secondary:#6b7280;--easy-color:#10b981;--medium-color:#f59e0b;--hard-color:#ef4444;--correct-color:#10b981;--incorrect-color:#ef4444;--shadow-sm:0 1px 2px 0 rgba(0,0,0,0.05);--shadow:0 1px 3px 0 rgba(0,0,0,0.1),0 1px 2px 0 rgba(0,0,0,0.06);--shadow-md:0 4px 6px -1px rgba(0,0,0,0.1),0 2px 4px -1px rgba(0,0,0,0.06);--shadow-lg:0 10px 15px -3px rgba(0,0,0,0.1),0 4px 6px -2px rgba(0,0,0,0.05);--radius:0.5rem}body{background:linear-gradient(180deg,#f8f9ff,#eef1ff);margin:0;padding:0;font-family:Inter,sans-serif;min-height:100vh}.start-screen{background-color:white;border-radius:var(--radius);padding:2rem;margin-top:2rem;box-shadow:var(--shadow-md)}.start-screen h2{font-size:1.75rem;font-weight:700;color:var(--text-primary);margin-bottom:.75rem}.start-screen p{color:var(--text-secondary);margin-bottom:1rem}.start-button{background-color:var(--primary);color:white;font-weight:500;padding:.75rem 1.5rem;border-radius:var(--radius);border:none;cursor:pointer;transition:background-color .2s;font-size:1rem;margin-top:1rem}.start-button:hover{background-color:var(--primary-hover)}.game-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:1.5rem}.game-header-wrapper{position:relative;margin-bottom:2rem;padding-bottom:1.5rem;border-bottom:1px solid var(--border);display:flex;flex-direction:column;align-items:center}.game-header-wrapper>:first-child{position:absolute;left:0;top:1rem;align-self:flex-start}.scores{display:flex;gap:1rem}.score-box{background-color:#6b7280;color:white;padding:.5rem 1rem;border-radius:var(--radius);display:flex;flex-direction:column;min-width:80px}.score-box.best{background-color:#4b5563}.score-title{font-size:.75rem;font-weight:500;text-transform:uppercase}.score-value{font-size:1.25rem;font-weight:600}.time-display{background-color:#f97316;color:white;padding:.5rem 1rem;border-radius:var(--radius);display:flex;flex-direction:column;min-width:80px}.time-label{font-size:.75rem;font-weight:500;text-transform:uppercase}.time-value{font-size:1.25rem;font-weight:600}.game-status{display:flex;justify-content:space-between;margin-bottom:1.5rem;font-size:.875rem;color:var(--text-secondary)}.combo-display .combo-active{color:var(--primary);font-weight:700}.difficulty-display{color:var(--medium-color);font-weight:500}.question-container{background-color:white;border-radius:var(--radius);padding:2rem;margin-bottom:1.5rem;box-shadow:var(--shadow);transition:background-color .3s}.question-container.answer-correct{background-color:rgba(16,185,129,.1)}.question-container.answer-incorrect{background-color:rgba(239,68,68,.1)}.numbers{font-size:2rem;font-weight:700;display:flex;justify-content:center;flex-wrap:wrap;gap:.5rem}.number-item,.user-answer{display:inline-block}.user-answer{color:var(--primary);min-width:3rem;border-bottom:2px solid var(--primary);padding:0 .5rem}.calculator-pad{margin-top:2rem}.number-pad{display:grid;grid-template-columns:repeat(3,1fr);gap:.5rem;max-width:400px;margin:0 auto}.number-button{background-color:#f3f4f6;border:none;border-radius:var(--radius);font-size:1.5rem;font-weight:600;padding:1rem;cursor:pointer;transition:background-color .2s}.control-button,.number-button:hover{background-color:#e5e7eb}.control-button{border:none;border-radius:var(--radius);font-size:1.25rem;font-weight:600;padding:1rem;cursor:pointer;transition:background-color .2s;grid-column:span 1}.control-button.backspace{background-color:#f97316;color:white}.control-button.submit{background-color:var(--primary);color:white;grid-column:span 2}.control-button.backspace:hover{background-color:#ea580c}.control-button.submit:hover{background-color:var(--primary-hover)}button:disabled{opacity:.5;cursor:not-allowed}@media (max-width:650px){.quick-count-container{padding:1rem}.game-header{flex-direction:column;gap:1rem}.numbers{font-size:1.5rem}.control-button,.number-button{padding:.75rem;font-size:1.25rem}}