:root{--color-primary: #6c5ce7;--color-primary-dark: #5a4bd1;--color-primary-light: #a29bfe;--color-secondary: #00cec9;--color-secondary-dark: #00b5b0;--color-accent: #fd79a8;--color-success: #00b894;--color-success-bg: #d4edda;--color-success-border: #a3d9a5;--color-success-text: #155724;--color-danger: #d63031;--color-danger-bg: #f8d7da;--color-danger-border: #f5c6cb;--color-danger-text: #721c24;--color-warning: #fdcb6e;--color-info: #74b9ff;--color-info-bg: #cce5ff;--color-info-border: #007bff;--color-bg: #f8f9fe;--color-surface: #ffffff;--color-surface-alt: #f1f0ff;--color-border: #e8e6f0;--color-text: #2d3436;--color-text-secondary: #636e72;--color-text-muted: #b2bec3;--radius-sm: 8px;--radius-md: 12px;--radius-lg: 16px;--radius-xl: 24px;--shadow-sm: 0 1px 3px rgba(108, 92, 231, .08);--shadow-md: 0 4px 16px rgba(108, 92, 231, .1);--shadow-lg: 0 8px 32px rgba(108, 92, 231, .14);--shadow-glow: 0 0 24px rgba(108, 92, 231, .2);--font-family: "Inter", "Segoe UI", system-ui, -apple-system, sans-serif;--transition: .2s cubic-bezier(.4, 0, .2, 1)}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}html{font-size:16px;scroll-behavior:smooth}body{font-family:var(--font-family);background:var(--color-bg);color:var(--color-text);line-height:1.6;min-height:100vh;-webkit-font-smoothing:antialiased}#root{min-height:100vh;display:flex;flex-direction:column}.header{background:linear-gradient(135deg,var(--color-primary) 0%,var(--color-primary-dark) 100%);color:#fff;padding:1rem 2rem;display:flex;align-items:center;justify-content:space-between;box-shadow:0 2px 12px #6c5ce74d;position:sticky;top:0;z-index:100}.header__title{font-size:1.4rem;font-weight:700;letter-spacing:-.02em}.header__title span{color:var(--color-warning)}.page{flex:1;display:flex;flex-direction:column;align-items:center;padding:2.5rem 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var(--transition);text-decoration:none;white-space:nowrap}.btn:active{transform:scale(.97)}.btn:disabled{opacity:.55;cursor:not-allowed;transform:none}.btn--primary{background:var(--color-primary);color:#fff}.btn--primary:hover:not(:disabled){background:var(--color-primary-dark);box-shadow:0 4px 14px #6c5ce759}.btn--secondary{background:transparent;color:var(--color-primary);border-color:var(--color-primary)}.btn--secondary:hover:not(:disabled){background:var(--color-surface-alt)}.btn--success{background:var(--color-success);color:#fff}.btn--success:hover:not(:disabled){background:#00a383;box-shadow:0 4px 14px #00b89459}.btn--danger{background:var(--color-danger);color:#fff}.btn--danger:hover:not(:disabled){background:#c0392b}.btn--ghost{background:transparent;color:var(--color-text-secondary)}.btn--ghost:hover:not(:disabled){background:var(--color-surface-alt);color:var(--color-primary)}.btn--lg{padding:1rem 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.5rem;font-size:.75rem;font-weight:600;font-family:inherit;color:var(--color-primary);background:transparent;border:1.5px solid var(--color-primary-light);border-radius:4px;cursor:pointer;transition:all var(--transition);vertical-align:middle}.copy-btn:hover{background:var(--color-primary);color:#fff}.copy-btn--copied{background:var(--color-success);border-color:var(--color-success);color:#fff}.copy-btn--block{display:flex;justify-content:center;width:100%;margin-left:0;margin-top:1rem;padding:.5rem 1rem;font-size:.85rem}.landing{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;padding:3rem 1.5rem;background:radial-gradient(ellipse at 20% 50%,rgba(108,92,231,.08) 0%,transparent 50%),radial-gradient(ellipse at 80% 50%,rgba(0,206,201,.06) 0%,transparent 50%)}.landing__hero{max-width:480px}.landing__tagline{font-size:1.1rem;color:var(--color-text-secondary);margin-bottom:2.5rem;line-height:1.6}.landing__actions{display:flex;gap:1rem;justify-content:center}.room-details{display:grid;grid-template-columns:1fr 1fr;gap:1rem;margin-bottom:1.5rem}.room-details__item{display:flex;flex-direction:column;gap:.2rem}.room-details__label{font-size:.75rem;font-weight:600;text-transform:uppercase;letter-spacing:.05em;color:var(--color-text-muted)}.room-details__value{font-size:1rem;font-weight:600;color:var(--color-text);word-break:break-all}.room-details__value--mono{font-family:Fira Code,Consolas,monospace;background:var(--color-surface-alt);padding:.3rem .6rem;border-radius:var(--radius-sm);font-size:.9rem}.question-set{display:flex;flex-direction:column;gap:1.5rem}.question-builder{background:var(--color-surface);border:2px solid var(--color-border);border-radius:var(--radius-md);padding:1.5rem;position:relative;transition:border-color var(--transition)}.question-builder:hover{border-color:var(--color-primary-light)}.question-builder__number{display:inline-block;background:var(--color-primary);color:#fff;font-size:.75rem;font-weight:700;padding:.2rem .6rem;border-radius:999px;margin-bottom:1rem}.question-builder .form-group{margin-bottom:.75rem}.question-builder__options{display:grid;grid-template-columns:1fr 1fr;gap:.75rem}.game-layout{display:flex;flex:1;min-height:calc(100vh - 60px)}.game-main{flex:1;padding:2rem 2.5rem;max-width:860px}.game-main__heading{font-size:1.3rem;font-weight:700;color:var(--color-primary);margin-bottom:1.5rem;display:flex;align-items:center;gap:.5rem}.game-main__heading:before{content:"";width:10px;height:10px;border-radius:50%;background:var(--color-success);animation:pulse-dot 1.5s infinite}@keyframes pulse-dot{0%,to{opacity:1}50%{opacity:.4}}.question-card{background:var(--color-surface);border-radius:var(--radius-lg);padding:2rem;box-shadow:var(--shadow-md);animation:fadeInUp .35s 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var(--transition)}.option-btn:hover:not(:disabled){border-color:var(--color-primary-light);background:#fff;box-shadow:var(--shadow-sm)}.option-btn:disabled{cursor:default}.option-btn--selected{background:var(--color-info-bg);border-color:var(--color-info-border)}.option-btn--correct{background:var(--color-success-bg);border-color:var(--color-success)}.option-btn--wrong{background:var(--color-danger-bg);border-color:var(--color-danger)}.option-btn--dimmed{opacity:.5}.option-btn__label{font-weight:700;font-size:.85rem;min-width:1.5rem;height:1.5rem;display:flex;align-items:center;justify-content:center;background:#6c5ce71a;color:var(--color-primary);border-radius:4px}.option-btn--correct .option-btn__label{background:#00b89426;color:var(--color-success)}.option-btn--wrong .option-btn__label{background:#d6303126;color:var(--color-danger)}.result-banner{margin-top:1.25rem;padding:.85rem 1rem;border-radius:var(--radius-sm);font-weight:700;font-size:1.05rem;text-align:center;border:1px solid;animation:fadeInUp .3s ease-out}.result-banner--correct{background:var(--color-success-bg);color:var(--color-success-text);border-color:var(--color-success-border)}.result-banner--wrong{background:var(--color-danger-bg);color:var(--color-danger-text);border-color:var(--color-danger-border)}.waiting-text{color:var(--color-text-muted);font-size:1.1rem;display:flex;align-items:center;gap:.75rem}.waiting-text:before{content:"";width:20px;height:20px;border:3px solid var(--color-border);border-top-color:var(--color-primary);border-radius:50%;animation:spin .8s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}.sidebar{width:300px;border-left:1px solid var(--color-border);padding:2rem 1.5rem;background:var(--color-surface);flex-shrink:0}.sidebar__heading{font-size:1.1rem;font-weight:700;color:var(--color-text);margin-bottom:1.25rem;display:flex;align-items:center;gap:.5rem}.leaderboard{list-style:none;padding:0;margin:0}.leaderboard__item{display:flex;align-items:center;gap:.6rem;padding:.7rem .5rem;border-radius:var(--radius-sm);transition:background var(--transition)}.leaderboard__item:nth-child(odd){background:var(--color-surface-alt)}.leaderboard__rank{font-weight:800;font-size:.9rem;min-width:2rem;text-align:center;color:var(--color-text-muted)}.leaderboard__item:first-child .leaderboard__rank{color:var(--color-warning)}.leaderboard__item:nth-child(2) .leaderboard__rank{color:var(--color-text-secondary)}.leaderboard__item:nth-child(3) .leaderboard__rank{color:#e17055}.leaderboard__name{flex:1;font-weight:500;color:var(--color-text)}.leaderboard__score{font-weight:700;color:var(--color-primary);font-variant-numeric:tabular-nums}.no-data{color:var(--color-text-muted);font-size:.9rem;text-align:center;padding:1rem 0}.success-msg{display:flex;align-items:center;gap:.5rem;padding:.75rem 1rem;background:var(--color-success-bg);color:var(--color-success-text);border-radius:var(--radius-sm);font-weight:600;border:1px solid var(--color-success-border);margin-bottom:1rem}.notification{position:fixed;top:1.25rem;right:1.25rem;display:flex;align-items:center;gap:1rem;background:var(--color-surface);border-left:4px solid var(--color-primary);padding:1rem 1.5rem;border-radius:var(--radius-sm);box-shadow:var(--shadow-lg);font-weight:600;font-size:.95rem;z-index:200;max-width:420px;animation:slideIn .3s 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1.5rem;margin-top:1rem}.player-list__title{font-size:.95rem;font-weight:700;color:var(--color-text);margin-bottom:.75rem}.player-list__items{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:.5rem}.player-list__item{display:flex;align-items:center;gap:.65rem;padding:.5rem .6rem;border-radius:var(--radius-sm);background:var(--color-surface-alt);font-weight:500;font-size:.95rem;animation:fadeInUp .25s ease-out}.player-list__avatar{width:2rem;height:2rem;border-radius:50%;background:linear-gradient(135deg,var(--color-primary),var(--color-primary-light));color:#fff;font-weight:700;font-size:.85rem;display:flex;align-items:center;justify-content:center;flex-shrink:0}.mt-1{margin-top:.5rem}.mt-2{margin-top:1rem}.mt-3{margin-top:1.5rem}.mb-1{margin-bottom:.5rem}.mb-2{margin-bottom:1rem}.mb-3{margin-bottom:1.5rem}.text-center{text-align:center}.text-muted{color:var(--color-text-muted)}.loading-spinner{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:1.5rem;padding:3rem 1.5rem;min-height:50vh}.loading-spinner__spinner{width:2.5rem;height:2.5rem;border:3px solid var(--color-border);border-top-color:var(--color-primary);border-radius:50%;animation:spin .8s linear infinite}.loading-spinner__message{max-width:360px;font-size:1.05rem;line-height:1.6;color:var(--color-text-secondary);text-align:center;font-weight:500}@media(max-width:768px){.game-layout{flex-direction:column}.sidebar{width:100%;border-left:none;border-top:1px solid var(--color-border)}.question-card__options,.question-builder__options,.room-details{grid-template-columns:1fr}.landing__actions{flex-direction:column;align-items:stretch}.not-found__code{font-size:5rem}.loading-spinner{padding:2rem 1rem;min-height:40vh}.loading-spinner__message{max-width:100%;font-size:1rem}}