:root{--tower-row-height: 70px;--answer-height: 48px;--answer-gap: 8px}.layout-container{display:grid;grid-template-columns:70% 30%;width:100%;height:100vh;height:100dvh;overflow:hidden;max-width:100vw;max-height:100vh}.left-column{display:grid;grid-template-rows:1fr var(--tower-row-height);min-width:0;min-height:0;overflow:hidden}.game-panel{overflow:hidden;position:relative;display:flex;align-items:center;justify-content:center;background-color:#0f0f1a;min-height:0;min-width:0}.game-panel canvas{max-width:100%;max-height:100%;object-fit:contain}.tower-row{height:var(--tower-row-height);background:linear-gradient(180deg,#1a1a2e,#16213e);border-top:2px solid var(--color-border);display:flex;align-items:center;justify-content:center;padding:4px;overflow:hidden;min-width:0}.quiz-panel{background-color:var(--color-bg-secondary);border-left:2px solid var(--color-border);display:flex;flex-direction:column;padding:8px;overflow:hidden;min-width:0;min-height:0}.layout-phone{grid-template-columns:70% 30%}.layout-tablet{grid-template-columns:75% 25%}.layout-desktop{grid-template-columns:80% 20%;--tower-row-height: 90px}.quiz-content{display:flex;flex-direction:column;flex:1;min-height:0;color:#e0e0e0;font-family:Segoe UI,Tahoma,Geneva,Verdana,sans-serif;overflow:hidden}.quiz-header{padding:4px 8px;background-color:#0f3460;border-bottom:1px solid #e94560;display:flex;justify-content:space-between;align-items:center;min-height:28px;flex-shrink:0}.quiz-header h2{margin:0;font-size:11px;color:#e94560;text-transform:uppercase;letter-spacing:1px}.stats{font-size:10px}.streak{color:#ff6b6b;font-weight:700}.question-container{flex:1;padding:6px;display:flex;flex-direction:column;gap:4px;min-height:0;overflow-y:auto}.question-text{font-size:13px;line-height:1.3;color:#fff;background-color:#1a1a2e;padding:6px;border-radius:4px;border-left:2px solid #e94560;flex-shrink:0;height:auto;min-height:30px;word-wrap:break-word;overflow-wrap:break-word}.answers{display:flex;flex-direction:column;gap:4px;flex:1;min-height:0}.answer-btn{height:auto;min-height:28px;padding:6px 8px;font-size:12px;font-weight:600;line-height:1.3;background-color:#16213e;color:#e0e0e0;border:1px solid #0f3460;border-radius:4px;cursor:pointer;transition:background-color .15s ease,border-color .15s ease;text-align:left;touch-action:manipulation;word-wrap:break-word;overflow-wrap:break-word;white-space:normal;flex-shrink:0;-webkit-tap-highlight-color:transparent;outline:none}.answer-btn:focus{outline:none}.answer-btn:focus-visible{outline:2px solid #e94560;outline-offset:2px}@media(hover:hover){.answer-btn:hover:not(:disabled){background-color:#0f3460;border-color:#e94560}}.answer-btn:disabled{cursor:not-allowed;opacity:.7}.answer-btn.correct{background-color:#2ecc71;border:3px solid #27ae60;color:#fff}.answer-btn.wrong{background-color:#e74c3c;border:3px solid #c0392b;color:#fff}.answer-btn.disabled{background-color:#34495e;border-color:#2c3e50}.result-feedback{display:flex;align-items:center;justify-content:center;gap:4px;padding:4px;border-radius:4px;font-size:10px;font-weight:700;animation:slideIn .2s ease;flex-shrink:0;min-height:24px;height:auto}.result-feedback.correct{background-color:#2ecc7133;color:#2ecc71;border:1px solid #2ecc71}.result-feedback.wrong{background-color:#e74c3c33;color:#e74c3c;border:1px solid #e74c3c}.result-icon{font-size:12px}.quiz-loading{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;color:#a0a0a0;text-align:center}.quiz-loading p{margin:4px 0;font-size:11px}.quiz-loading .hint{font-size:9px;color:#666}.quiz-footer{display:none}@keyframes slideIn{0%{opacity:0;transform:translateY(-3px)}to{opacity:1;transform:translateY(0)}}@media screen and (min-width:768px){.quiz-header{padding:6px 12px;min-height:36px}.quiz-header h2{font-size:14px}.stats{font-size:12px}.question-container{padding:10px;gap:8px}.question-text{font-size:14px;line-height:1.4;padding:10px;min-height:40px}.answers{gap:6px}.answer-btn{min-height:36px;font-size:13px;padding:8px 12px}.result-feedback{font-size:12px;padding:8px;min-height:32px}.result-icon{font-size:14px}}@media screen and (min-width:1024px){.quiz-header{min-height:40px}.quiz-header h2{font-size:16px;letter-spacing:2px}.question-text{font-size:15px;line-height:1.5;min-height:50px}.answer-btn{font-size:14px;min-height:40px}.quiz-footer{display:block;padding:8px;background-color:#0f3460;border-top:1px solid #16213e;text-align:center;font-size:11px;color:#a0a0a0}}.tower-selector{display:flex;align-items:center;justify-content:center;width:100%;height:100%;padding:2px;overflow:hidden}.tower-selector h3{display:none}.tower-grid{display:flex;justify-content:center;align-items:center;gap:4px;width:100%;height:100%;overflow:hidden}.tower-btn{flex:1 1 0;max-width:100px;height:100%;background:linear-gradient(180deg,#2d3748,#1a202c);border:1px solid #4a5568;border-radius:4px;padding:2px;cursor:pointer;transition:all .15s ease;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:1px;touch-action:manipulation;min-width:0;overflow:hidden}.tower-btn:hover:not(.disabled){background:linear-gradient(180deg,#3d4a5c,#2a303c);border-color:#63b3ed}.tower-btn.selected{background:linear-gradient(180deg,#2563eb,#1d4ed8);border-color:#60a5fa;box-shadow:0 0 4px #60a5fa80}.tower-btn.disabled{opacity:.5;cursor:not-allowed;background:linear-gradient(180deg,#1f2937,#111827);border-color:#374151}.tower-icon{width:20px;height:20px;object-fit:contain;image-rendering:pixelated;flex-shrink:0}.tower-name{color:#e2e8f0;font-size:10px;font-weight:600;text-align:center;line-height:1.2;max-width:100%}.tower-cost{color:#fbbf24;font-size:9px;font-weight:700;line-height:1}.tower-cost.cannot-afford{color:#ef4444}.tower-hint{display:none}.tower-loading{color:#9ca3af;text-align:center;font-size:12px}@media screen and (min-width:768px){.tower-grid{gap:6px}.tower-btn{max-width:100px;border-radius:6px;padding:4px;gap:2px}.tower-icon{width:24px;height:24px}.tower-name{font-size:9px}.tower-cost{font-size:10px}}@media screen and (min-width:1024px){.tower-grid{gap:8px}.tower-btn{max-width:160px;border-radius:8px;padding:6px;gap:3px}.tower-icon{width:32px;height:32px}.tower-name{font-size:12px}.tower-cost{font-size:11px}}.orientation-warning{position:fixed;inset:0;z-index:9999;background:var(--color-bg-primary, #1a1a2e);display:flex;align-items:center;justify-content:center}.orientation-content{text-align:center;color:#fff;padding:var(--spacing-xl, 20px)}.rotate-icon{color:var(--color-accent, #e94560);margin-bottom:var(--spacing-lg, 16px);animation:rotate-hint 2s ease-in-out infinite}.orientation-content h2{font-size:24px;margin:0 0 var(--spacing-sm, 8px);color:var(--color-accent, #e94560)}.orientation-content p{font-size:16px;color:#a0a0a0;margin:0}@keyframes rotate-hint{0%,to{transform:rotate(0)}25%{transform:rotate(-15deg)}75%{transform:rotate(15deg)}}@media(orientation:landscape){.orientation-warning{display:none}}.fullscreen-prompt{position:fixed;inset:0;z-index:9998;background:#1a1a2ef2;display:flex;align-items:center;justify-content:center;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px)}.fullscreen-content{text-align:center;color:#fff;padding:32px;max-width:400px}.fullscreen-icon{color:var(--color-accent, #4CAF50);margin-bottom:16px}.fullscreen-content h2{font-size:24px;margin:0 0 8px;color:#fff}.fullscreen-content p{font-size:16px;color:#a0a0a0;margin:0 0 24px}.fullscreen-buttons{display:flex;gap:12px;justify-content:center;flex-wrap:wrap}.fullscreen-btn{padding:12px 24px;font-size:16px;font-weight:600;border:none;border-radius:8px;cursor:pointer;transition:transform .2s,opacity .2s;min-width:140px}.fullscreen-btn:hover{transform:scale(1.05)}.fullscreen-btn:active{transform:scale(.98)}.fullscreen-btn.primary{background:var(--color-accent, #4CAF50);color:#fff}.fullscreen-btn.primary:hover{opacity:.9}.fullscreen-btn.secondary{background:transparent;color:#a0a0a0;border:1px solid #555}.fullscreen-btn.secondary:hover{color:#fff;border-color:#888}.ios-instructions{text-align:left;margin:0 0 24px;padding-left:24px;color:silver;font-size:15px;line-height:1.8}.ios-instructions li{margin-bottom:8px}.ios-instructions strong{color:#fff}:root{--breakpoint-mobile: 480px;--breakpoint-tablet: 768px;--breakpoint-desktop: 1024px;--touch-target-min: 44px;--spacing-xs: 4px;--spacing-sm: 8px;--spacing-md: 12px;--spacing-lg: 16px;--spacing-xl: 20px;--space-1: 4px;--space-2: 8px;--space-3: 12px;--space-4: 16px;--space-5: 20px;--space-6: 24px;--space-8: 32px;--text-title: clamp(1rem, 2vw + .5rem, 1.75rem);--text-heading: clamp(.875rem, 1.5vw + .5rem, 1.25rem);--text-body: clamp(.875rem, 1vw + .5rem, 1rem);--text-small: clamp(.75rem, .8vw + .5rem, .875rem);--text-min: .75rem;--touch-min: 56px;--touch-comfortable: 64px;--touch-spacing: 12px;--bp-phone-sm: 360px;--bp-phone: 480px;--bp-tablet: 768px;--bp-desktop: 1024px;--bp-wide: 1280px;--color-bg-primary: #1a1a2e;--color-bg-secondary: #16213e;--color-accent: #e94560;--color-border: #0f3460}*{margin:0;padding:0;box-sizing:border-box}html,body,#root{width:100%;height:100%;overflow:hidden;background-color:#1a1a2e}.app-container{display:flex;width:100%;height:100vh;max-width:1600px;margin:0 auto;min-height:0}.game-panel{height:100%;min-height:0;overflow:hidden;position:relative;display:flex;align-items:center;justify-content:center;background-color:#0f0f1a}.quiz-panel{height:100%;min-height:0;flex-shrink:0;background-color:var(--color-bg-secondary);border-left:2px solid var(--color-border);display:flex;flex-direction:column;padding:var(--space-5);overflow-y:auto}#game-container{width:100%;height:100%;overflow:hidden;display:flex;align-items:center;justify-content:center}#game-container canvas{display:block}@media screen and (max-width:1023px){.game-panel{contain:strict;will-change:transform}.quiz-panel{contain:content;-webkit-overflow-scrolling:touch;padding:var(--space-3)}@media(prefers-reduced-motion:reduce){.answer-btn,.tower-btn,.overlay-panel,.overlay-content{transition:none;animation:none}}}.game-panel,.tower-btn{-webkit-user-select:none;user-select:none}