.login-container{min-height:100vh;display:flex;justify-content:center;align-items:center;background:linear-gradient(135deg,#667eea,#764ba2);padding:20px;position:relative;overflow:hidden}@media (prefers-contrast: high){.login-container{background:linear-gradient(135deg,#4c63d2,#6b2c91)}}.login-card{background:#fff;border-radius:16px;padding:40px;width:100%;max-width:420px;box-shadow:0 20px 60px #0000004d}.login-form{display:flex;flex-direction:column;gap:24px}.error-message{background-color:#fee2e2;color:#dc2626;padding:12px;border-radius:8px;font-size:14px;text-align:center;border:1px solid #fca5a5}.lockout-message{background-color:#fef3c7;color:#92400e;padding:12px;border-radius:8px;font-size:14px;text-align:center;border:1px solid #fcd34d}.input-wrapper input:disabled{background-color:#f3f4f6;cursor:not-allowed;opacity:.6}.input-wrapper input:focus-visible{outline:2px solid #667eea;outline-offset:2px}.sign-in-button{background:linear-gradient(135deg,#667eea,#764ba2);color:#fff;border:none;padding:14px;border-radius:8px;font-size:16px;font-weight:600;cursor:pointer;transition:transform .2s,box-shadow .2s;margin-top:8px}.sign-in-button:hover:not(:disabled){transform:translateY(-1px);box-shadow:0 4px 12px #667eea66}.sign-in-button:active:not(:disabled){transform:translateY(0)}.sign-in-button:disabled{opacity:.6;cursor:not-allowed}.login-links{display:flex;flex-direction:column;gap:12px;margin-top:24px;text-align:center}.signup-container{min-height:100vh;display:flex;justify-content:center;align-items:center;background:linear-gradient(135deg,#667eea,#764ba2);padding:20px}.signup-card{background:#fff;border-radius:16px;padding:40px;width:100%;max-width:420px;box-shadow:0 20px 60px #0000004d}.signup-form{display:flex;flex-direction:column;gap:24px}.sign-up-button{background:linear-gradient(135deg,#667eea,#764ba2);color:#fff;border:none;padding:14px;border-radius:8px;font-size:16px;font-weight:600;cursor:pointer;transition:transform .2s,box-shadow .2s;margin-top:8px}.sign-up-button:hover:not(:disabled){transform:translateY(-1px);box-shadow:0 4px 12px #667eea66}.sign-up-button:active:not(:disabled){transform:translateY(0)}.sign-up-button:disabled{opacity:.6;cursor:not-allowed}.signup-links{display:flex;flex-direction:column;gap:12px;margin-top:24px;text-align:center}.forgot-password-container{min-height:100vh;display:flex;justify-content:center;align-items:center;background:linear-gradient(135deg,#667eea,#764ba2);padding:20px}.forgot-password-card{background:#fff;border-radius:16px;padding:40px;width:100%;max-width:420px;box-shadow:0 20px 60px #0000004d}.logo{color:#667eea;font-size:32px;font-weight:700;margin:0 0 8px;text-align:center}.welcome-text{color:#6b7280;font-size:16px;text-align:center;margin:0 0 32px}.forgot-password-form{display:flex;flex-direction:column;gap:24px}.error-message{background-color:#fee2e2;color:#dc2626;padding:12px;border-radius:8px;font-size:14px;text-align:center}.success-message{text-align:center;padding:20px}.success-message p{color:#059669;margin-bottom:16px;font-size:16px}.input-group{display:flex;flex-direction:column;gap:8px}.input-group label{color:#374151;font-size:14px;font-weight:500}.input-wrapper{position:relative;display:flex;align-items:center}.input-icon{position:absolute;left:12px;color:#9ca3af;pointer-events:none}.input-wrapper input{width:100%;padding:12px 12px 12px 44px;border:1px solid #d1d5db;border-radius:8px;font-size:16px;transition:border-color .2s,box-shadow .2s}.input-wrapper input:focus{outline:none;border-color:#667eea;box-shadow:0 0 0 3px #667eea1a}.reset-button{background:linear-gradient(135deg,#667eea,#764ba2);color:#fff;border:none;padding:14px;border-radius:8px;font-size:16px;font-weight:600;cursor:pointer;transition:transform .2s,box-shadow .2s;margin-top:8px}.reset-button:hover:not(:disabled){transform:translateY(-1px);box-shadow:0 4px 12px #667eea66}.reset-button:active:not(:disabled){transform:translateY(0)}.reset-button:disabled{opacity:.6;cursor:not-allowed}.forgot-password-links{display:flex;flex-direction:column;gap:12px;margin-top:24px;text-align:center}.link{color:#667eea;text-decoration:none;font-size:14px;transition:color .2s}.link:hover{color:#764ba2;text-decoration:underline}.role-page-container{min-height:100vh;display:flex;justify-content:center;align-items:center;background:linear-gradient(135deg,#4f7cff,#8b2be2);padding:20px}.role-card{background:#fff;border-radius:10px;width:100%;max-width:720px;padding:24px 28px;box-shadow:0 18px 50px #0003}.role-title{color:#4a64ff;text-align:center;font-size:34px;margin:0;font-weight:700}.role-subtitle{text-align:center;color:#7a7f8f;margin:8px 0 22px;font-size:15px}.role-options{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:16px}.role-option-card{border:1px solid #e4e7ef;border-radius:8px;background:#fbfcff;text-align:center;padding:20px 16px;cursor:pointer;transition:transform .15s ease,box-shadow .15s ease,border-color .15s ease}.role-option-card:hover{transform:translateY(-1px);border-color:#cfd7ff;box-shadow:0 8px 24px #4f7cff24}.role-option-card:focus-visible{outline:2px solid #4f7cff;outline-offset:2px}.role-icon-circle{width:42px;height:42px;border-radius:50%;display:inline-flex;align-items:center;justify-content:center;margin-bottom:10px;font-size:19px}.host-icon{background:#e8f0ff}.participant-icon{background:#f1e8ff}.maintainer-icon{background:#fef3c7}.role-option-title{margin:0 0 8px;font-size:19px;color:#2a3143}.role-option-text{margin:0 0 10px;color:#6f7688;font-size:13px;line-height:1.45}.role-option-list{list-style:disc;margin:0;padding-left:18px;color:#7c8294;font-size:12px;line-height:1.5;text-align:left}@media (max-width: 760px){.role-card{padding:20px}.role-title{font-size:28px}.role-options{grid-template-columns:1fr}}.manage-users-page{min-height:100vh;background:linear-gradient(135deg,#4f7cff,#8b2be2);display:flex;justify-content:center;align-items:center;padding:24px}.manage-users-card{width:100%;max-width:640px;background:#fff;border-radius:16px;padding:28px;box-shadow:0 20px 60px #00000040}.manage-users-back{background:transparent;border:none;color:#4a5568;cursor:pointer;font-size:14px;padding:0;margin-bottom:16px}.manage-users-back:hover{color:#1a202c}.manage-users-title{margin:0;color:#3647d7;font-size:24px;text-align:center}.manage-users-subtitle{margin:8px 0 20px;color:#6b7280;font-size:14px;text-align:center}.manage-users-table-wrap{overflow-x:auto}.manage-users-table{width:100%;border-collapse:collapse}.manage-users-table th,.manage-users-table td{padding:12px 10px;text-align:left;border-bottom:1px solid #e5e7eb}.manage-users-table th{font-weight:600;color:#374151;font-size:14px}.manage-users-table td{color:#4b5563;font-size:14px}.manage-users-badge{display:inline-block;padding:4px 10px;border-radius:6px;font-size:12px;font-weight:600}.manage-users-badge-maintainer{background:#fef3c7;color:#92400e}.manage-users-badge-host{background:#dbeafe;color:#1e40af}.manage-users-badge-participant{background:#e9d5ff;color:#6b21a8}.manage-users-select{padding:8px 12px;border:1px solid #d1d5db;border-radius:8px;font-size:14px;background:#fff;cursor:pointer;min-width:140px}.manage-users-select:focus{outline:none;border-color:#4f46e5}.manage-users-select:disabled{opacity:.7;cursor:not-allowed}.manage-users-loading,.manage-users-unauthorized{text-align:center;color:#6b7280;margin:0}.manage-users-message{margin:16px 0 0;padding:10px;border-radius:8px;font-size:14px;text-align:center;background:#f0fdf4;color:#166534}.participant-home-page{min-height:100vh;background:linear-gradient(135deg,#4f7cff,#8b2be2);display:flex;justify-content:center;align-items:center;padding:24px}.participant-home-card{width:100%;max-width:560px;background:#fff;border-radius:16px;padding:32px;box-shadow:0 20px 60px #00000040}.participant-home-back{background:transparent;border:none;color:#4a5568;cursor:pointer;font-size:14px;padding:0;margin-bottom:16px}.participant-home-back:hover{color:#1a202c}.participant-home-title{margin:0;color:#3647d7;font-size:32px;text-align:center}.participant-home-subtitle{margin:8px 0 24px;color:#6b7280;font-size:16px;text-align:center}.participant-home-options{display:flex;flex-direction:column;gap:12px}.participant-home-option{display:flex;flex-direction:column;align-items:flex-start;text-align:left;width:100%;padding:18px 20px;border:2px solid #e5e7eb;border-radius:12px;background:#fafafa;cursor:pointer;transition:border-color .2s,background .2s,transform .15s}.participant-home-option:hover{border-color:#4f46e5;background:#eef2ff;transform:translateY(-1px)}.participant-home-icon{font-size:28px;margin-bottom:8px}.participant-home-label{font-size:18px;font-weight:700;color:#1f2937;margin-bottom:4px}.participant-home-desc{font-size:14px;color:#6b7280;line-height:1.4}.participant-games-page{min-height:100vh;background:#f4f7ff;padding:24px}.participant-games-card{max-width:1200px;margin:0 auto}.back-link:hover{color:#1a202c}.games-title{margin:0;color:#1a202c;font-size:42px}.games-subtitle{margin:8px 0 20px;color:#6b7280;font-size:17px}.games-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(320px,1fr));gap:16px}.game-option{border-radius:12px;padding:20px;border:1px solid transparent}.game-option.blue{background:#e9f2ff;border-color:#bcd6ff}.game-option.green{background:#e9f8ef;border-color:#b4e7c8}.game-option.orange{background:#fff7ed;border-color:#fed7aa}.game-option.purple{background:#f5f3ff;border-color:#c4b5fd}.games-section-title{grid-column:1 / -1;margin:24px 0 8px;font-size:22px;color:#1a202c}.game-icon{width:52px;height:52px;border-radius:50%;display:inline-flex;align-items:center;justify-content:center;font-size:24px;background:#fff;margin-bottom:10px}.game-option h2{margin:0 0 8px;color:#1f2937;font-size:24px}.game-option p{margin:0 0 10px;color:#4b5563;line-height:1.5}.game-option ul{margin:0 0 14px;padding-left:20px;color:#4b5563}.enter-game-btn{border:none;border-radius:8px;padding:10px 14px;background:#4f46e5;color:#fff;cursor:pointer;font-weight:600}.enter-game-btn:hover{background:#4338ca}@media (max-width: 900px){.games-grid{grid-template-columns:1fr}.games-title{font-size:34px}}.leaderboard-page{min-height:100vh;background:linear-gradient(135deg,#4f7cff,#8b2be2);display:flex;justify-content:center;align-items:center;padding:24px}.leaderboard-card{width:100%;max-width:560px;background:#fff;border-radius:16px;padding:28px;box-shadow:0 20px 60px #00000040}.leaderboard-back{background:transparent;border:none;color:#4a5568;cursor:pointer;font-size:14px;padding:0;margin-bottom:16px}.leaderboard-back:hover{color:#1a202c}.leaderboard-title{margin:0;color:#3647d7;font-size:28px;text-align:center}.leaderboard-subtitle{margin:8px 0 20px;color:#6b7280;font-size:15px;text-align:center}.leaderboard-loading,.leaderboard-error,.leaderboard-empty{text-align:center;color:#6b7280;margin:16px 0}.leaderboard-error{color:#b91c1c}.leaderboard-podium{display:flex;justify-content:center;align-items:flex-end;gap:8px;margin-bottom:28px;min-height:160px}.leaderboard-podium-place{display:flex;flex-direction:column;align-items:center;flex:1;max-width:140px}.leaderboard-podium-1 .leaderboard-podium-block{height:100px;background:linear-gradient(180deg,#f7e098,#e8c547,#c9a227)}.leaderboard-podium-2 .leaderboard-podium-block{height:72px;background:linear-gradient(180deg,#e8e8e8,silver,#a0a0a0)}.leaderboard-podium-3 .leaderboard-podium-block{height:52px;background:linear-gradient(180deg,#e8d4b8,#cd7f32,#a65d20)}.leaderboard-podium-block{width:100%;border-radius:8px 8px 0 0;display:flex;flex-direction:column;align-items:center;justify-content:flex-end;padding:10px 8px 12px;box-shadow:0 -2px 8px #0000001a}.leaderboard-podium-medal{display:inline-flex;align-items:center;justify-content:center;width:36px;height:36px;border-radius:50%;font-weight:800;font-size:18px;color:#1a1a1a;margin-bottom:6px;flex-shrink:0}.leaderboard-podium-avatar{width:52px;height:52px;border-radius:50%;flex-shrink:0;margin-bottom:-8px;z-index:1;box-shadow:0 4px 12px #00000026;border:3px solid #fff;overflow:hidden;background:#f9fafb}.leaderboard-podium-avatar img{width:100%;height:100%;object-fit:cover;display:block}.leaderboard-medal-gold{background:linear-gradient(145deg,gold,#daa520);box-shadow:0 2px 6px #daa52080}.leaderboard-medal-silver{background:linear-gradient(145deg,#f5f5f5,silver);box-shadow:0 2px 6px #80808066}.leaderboard-medal-bronze{background:linear-gradient(145deg,#cd7f32,#8b4513);color:#fff;box-shadow:0 2px 6px #8b451366}.leaderboard-podium-name{font-weight:700;font-size:14px;color:#1f2937;text-align:center;line-height:1.2;margin-bottom:2px}.leaderboard-podium-points{font-size:13px;color:#4b5563;font-weight:600}.leaderboard-podium-partial .leaderboard-podium-1 .leaderboard-podium-block{height:100px}.leaderboard-podium-partial .leaderboard-podium-2 .leaderboard-podium-block{height:72px}.leaderboard-podium-partial .leaderboard-podium-3 .leaderboard-podium-block{height:52px}.leaderboard-table-wrap{overflow-x:auto}.leaderboard-table{width:100%;border-collapse:collapse}.leaderboard-table th,.leaderboard-table td{padding:12px 16px;text-align:left;border-bottom:1px solid #e5e7eb}.leaderboard-table th{font-weight:700;color:#374151;background:#f9fafb}.leaderboard-table td:first-child{font-weight:600}.leaderboard-table tbody tr:hover{background:#f9fafb}.leaderboard-row-rank-gold td{background:linear-gradient(90deg,#ffd7002e,#fff0);color:#1a1a1a}.leaderboard-row-rank-gold td:first-child{color:#b8860b}.leaderboard-row-rank-silver td{background:linear-gradient(90deg,#c0c0c040,#fff0);color:#1a1a1a}.leaderboard-row-rank-silver td:first-child{color:gray}.leaderboard-row-rank-bronze td{background:linear-gradient(90deg,#cd7f3233,#fff0);color:#1a1a1a}.leaderboard-row-rank-bronze td:first-child{color:#8b4513}.leaderboard-row-rank-default td{background:#fff;color:#374151}.leaderboard-row-rank-default td:first-child{color:#6b7280}.settings-page{min-height:100vh;background:linear-gradient(135deg,#4f7cff,#8b2be2);display:flex;justify-content:center;align-items:center;padding:24px}.settings-card{width:100%;max-width:480px;background:#fff;border-radius:16px;padding:28px;box-shadow:0 20px 60px #00000040}.settings-back{background:transparent;border:none;color:#4a5568;cursor:pointer;font-size:14px;padding:0;margin-bottom:16px}.settings-back:hover{color:#1a202c}.settings-title{margin:0;color:#3647d7;font-size:28px;text-align:center}.settings-subtitle{margin:8px 0 20px;color:#6b7280;font-size:15px;text-align:center}.settings-role-row{display:flex;flex-direction:column;gap:4px;margin-bottom:12px;padding:10px 12px;background:#f9fafb;border-radius:8px}.settings-role-value{font-weight:600;color:#374151;font-size:15px}.settings-role-hint{font-size:12px;color:#6b7280}.settings-manage-link-wrap{margin-bottom:16px}.settings-manage-link{background:transparent;border:none;color:#4f46e5;font-size:14px;font-weight:500;cursor:pointer;padding:0;text-decoration:underline}.settings-manage-link:hover{color:#4338ca}.settings-form{display:flex;flex-direction:column;gap:12px}.settings-label{font-size:14px;font-weight:600;color:#374151}.settings-input{width:100%;padding:12px 14px;border:1px solid #d1d5db;border-radius:8px;font-size:16px}.settings-input:focus{outline:none;border-color:#4f46e5;box-shadow:0 0 0 2px #4f46e533}.settings-select{width:100%;padding:12px 14px;border:1px solid #d1d5db;border-radius:8px;font-size:16px;background:#fff;cursor:pointer}.settings-select:focus{outline:none;border-color:#4f46e5;box-shadow:0 0 0 2px #4f46e533}.settings-btn{margin-top:8px;padding:12px 16px;background:#4f46e5;color:#fff;border:none;border-radius:8px;font-size:16px;font-weight:600;cursor:pointer}.settings-btn:hover:not(:disabled){background:#4338ca}.settings-btn:disabled{opacity:.6;cursor:not-allowed}.settings-message{margin-top:16px;padding:10px 12px;background:#f0fdf4;color:#166534;border-radius:8px;font-size:14px}.settings-loading{text-align:center;color:#6b7280}.settings-avatar-row{display:flex;gap:16px;margin-bottom:4px;flex-wrap:wrap}.settings-avatar-cell{width:80px;height:80px;border:2px solid #e5e7eb;border-radius:12px;padding:0;cursor:pointer;overflow:hidden;transition:border-color .15s,box-shadow .15s}.settings-avatar-img{width:100%;height:100%;object-fit:cover;display:block}.settings-avatar-cell:hover{border-color:#4f46e5;box-shadow:0 0 0 2px #4f46e540}.settings-avatar-cell-selected{border-color:#4f46e5;box-shadow:0 0 0 3px #4f46e566}.learn-page{min-height:100vh;background:linear-gradient(135deg,#4f7cff,#8b2be2);display:flex;justify-content:center;align-items:center;padding:20px}.learn-card{width:100%;max-width:760px;background:#fff;border-radius:12px;padding:28px;box-shadow:0 16px 44px #0000003d}.learn-title{margin:0;text-align:center;color:#3647d7;font-size:34px}.learn-subtitle{margin:10px 0 20px;text-align:center;color:#6b7280;font-size:16px}.table-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:10px}.table-btn{border:1px solid #c7d2fe;background:#eef2ff;border-radius:8px;padding:12px;font-size:18px;font-weight:700;cursor:pointer}.table-btn:hover{background:#dbe4ff}.question-form{display:flex;flex-direction:column;gap:16px}.question-row{display:flex;flex-wrap:wrap;align-items:center;gap:12px;justify-content:center}.question-label{color:#1f2937;font-size:22px;margin:0}.answer-display-wrap{flex:0 0 auto}.answer-input{width:100%;max-width:220px;margin:0 auto;text-align:center;border:1px solid #cbd5e1;border-radius:8px;padding:10px;font-size:24px}.answer-display{max-width:140px;font-size:28px;font-weight:700;background:#7c3aed;border:none;color:#fff;border-radius:10px;padding:12px 16px}.answer-display::placeholder{color:#fff9}.answer-display:focus{outline:none;box-shadow:0 0 0 3px #7c3aed80}.check-btn{background:#7c3aed;padding:12px 24px;font-size:18px}.check-btn:hover:not(:disabled){background:#6d28d9}.check-btn:disabled{opacity:.6;cursor:not-allowed}.keypad-wrap{display:flex;flex-direction:column;align-items:center;gap:8px;margin-top:8px}.keypad-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:8px}.keypad-row-zero{display:flex;justify-content:center;gap:8px;width:100%;max-width:180px}.keypad-btn{width:52px;height:52px;border:none;border-radius:10px;background:#7c3aed;color:#fff;font-size:22px;font-weight:700;cursor:pointer;transition:background .15s,transform .1s}.keypad-btn:hover{background:#6d28d9}.keypad-btn:active{transform:scale(.96)}.keypad-btn-active{background:#a78bfa;color:#fff}.keypad-btn-active:hover{background:#8b5cf6}.keypad-backspace{font-size:20px}.primary-btn,.secondary-btn{border:none;border-radius:8px;padding:12px 16px;font-weight:700;cursor:pointer}.primary-btn{background:#4f46e5;color:#fff}.primary-btn:hover{background:#4338ca}.secondary-btn:hover{background:#d1d5db}.avatar-box{text-align:center;background:#f8fafc;border:1px solid #e2e8f0;border-radius:10px;padding:16px;margin-bottom:12px}.avatar-emoji{font-size:56px;line-height:1}.avatar-label{margin:8px 0 0;color:#334155;font-weight:600}.leaderboard-title{margin:14px 0 10px;font-size:20px;color:#1f2937}.leaderboard-list{margin:0;padding:0;list-style:none;border:1px solid #e5e7eb;border-radius:8px}.finish-actions{margin-top:12px;display:flex;gap:10px}.status-text{color:#334155}.error-text{color:#b91c1c}.learn-feedback-card{text-align:center;padding:32px 28px}.learn-feedback-emoji{font-size:56px;line-height:1;margin-bottom:12px}.learn-feedback-emoji.correct{animation:learn-feedback-pop .4s ease-out}@keyframes learn-feedback-pop{0%{transform:scale(.8);opacity:.6}to{transform:scale(1);opacity:1}}.learn-feedback-message{margin:0 0 20px;font-size:22px;font-weight:600;line-height:1.4}.learn-feedback-message.correct{color:#166534}.learn-feedback-message.wrong{color:#1f2937}.learn-feedback-auto{margin:0 0 8px;font-size:14px;color:#6b7280}.back-link{background:transparent;border:none;color:#4a5568;cursor:pointer;font-size:15px;padding:0;margin-bottom:16px}@media (max-width: 640px){.table-grid{grid-template-columns:repeat(2,1fr)}.learn-title{font-size:28px}}.hangman-page{min-height:100vh;background:linear-gradient(135deg,#4f7cff,#8b2be2);display:flex;justify-content:center;align-items:center;padding:20px}.hangman-card{width:100%;max-width:760px;background:#fff;border-radius:12px;padding:26px;box-shadow:0 16px 44px #0000003d}.hangman-back{background:transparent;border:none;color:#4a5568;cursor:pointer;margin-bottom:10px;padding:0;font-size:14px}.hangman-title{margin:0;color:#3647d7;text-align:center;font-size:32px}.hangman-subtitle{margin:8px 0 16px;text-align:center;color:#6b7280}.table-selector-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:10px}.table-pick-btn{border:1px solid #c7d2fe;background:#eef2ff;border-radius:8px;padding:10px;font-size:18px;font-weight:700;cursor:pointer}.table-pick-btn.active{background:#4f46e5;color:#fff;border-color:#4f46e5}.selected-info{margin:12px 0;color:#374151;text-align:center}.start-btn,.secondary-btn{border:none;border-radius:8px;padding:11px 16px;font-weight:700;cursor:pointer}.start-btn{background:#4f46e5;color:#fff}.start-btn:disabled{opacity:.5;cursor:not-allowed}.secondary-btn{background:#e5e7eb;color:#111827}.hangman-svg{display:block;width:220px;margin:0 auto 10px}.gallows,.hangman-part{stroke:#1f2937;stroke-width:4;fill:none;stroke-linecap:round}.hangman-form{display:flex;flex-direction:column;gap:10px}.question-label{text-align:center;font-size:24px;color:#1f2937}.answer-input{width:220px;margin:0 auto;border:1px solid #cbd5e1;border-radius:8px;text-align:center;font-size:24px;padding:10px}.feedback-text{text-align:center;margin-top:10px;color:#334155;font-weight:600}.result-avatar{text-align:center;font-size:64px;line-height:1;margin:8px 0}.result-text,.result-status{text-align:center;color:#334155}.result-error{text-align:center;color:#b91c1c}.leaderboard-title{margin:12px 0 8px;text-align:center;color:#1f2937}.leaderboard-list{margin:0 auto;padding:0;list-style:none;border:1px solid #e5e7eb;border-radius:8px;max-width:420px}.leaderboard-list li{display:flex;justify-content:space-between;padding:10px 12px;border-bottom:1px solid #f1f5f9}.leaderboard-list li:last-child{border-bottom:none}.result-actions{display:flex;gap:10px;justify-content:center;margin-top:14px}.hangman-feedback-card{text-align:center;padding:32px 28px}.hangman-feedback-emoji{font-size:56px;line-height:1;margin-bottom:12px}.hangman-feedback-emoji.correct{animation:feedback-pop .4s ease-out}@keyframes feedback-pop{0%{transform:scale(.8);opacity:.6}to{transform:scale(1);opacity:1}}.hangman-feedback-message{margin:0 0 20px;font-size:22px;font-weight:600;line-height:1.4}.hangman-feedback-message.correct{color:#166534}.hangman-feedback-message.wrong{color:#1f2937}.hangman-feedback-auto{margin:0 0 8px;font-size:14px;color:#6b7280}.mult-visual-wrap{padding:16px;background:#f8fafc;border-radius:12px;border:1px solid #e2e8f0;max-width:360px;margin:20px auto}.mult-visual-header{display:flex;align-items:center;justify-content:center;gap:12px;margin-bottom:16px;flex-wrap:wrap}.mult-visual-question{background:#0d9488;color:#fff;padding:10px 16px;border-radius:10px;font-size:20px;font-weight:700}.mult-visual-answer{font-size:24px;font-weight:700;color:#1f2937}.mult-visual-rows{display:flex;flex-direction:column;gap:8px}.mult-visual-row{display:flex;align-items:center;gap:10px}.mult-visual-squares{display:flex;gap:4px;flex-wrap:wrap;padding:6px 10px;border-radius:8px;border:2px solid #0f766e;min-height:36px}.mult-visual-square{width:20px;height:20px;background:#fffc;border-radius:3px;flex-shrink:0}.mult-visual-label{min-width:44px;padding:6px 10px;border-radius:8px;border:2px solid #0f766e;background:#fff;font-weight:700;font-size:16px;text-align:center}@media (max-width: 640px){.table-selector-grid{grid-template-columns:repeat(2,1fr)}.hangman-title{font-size:27px}.result-actions{flex-direction:column}}.addition-game-page{min-height:100vh;background:linear-gradient(180deg,#87ceeb,#e0f4e0 60%,#8b7355);padding:0;position:relative}.addition-game-back-fixed{position:absolute;top:12px;left:12px;z-index:10;background:#ffffffe6;border:none;border-radius:8px;padding:8px 14px;color:#1a202c;cursor:pointer;font-size:14px;font-weight:600}.addition-game-back-fixed:hover{background:#fff}.addition-game-question-bar{position:absolute;top:16px;left:50%;transform:translate(-50%);z-index:10;background:#2d5a6b;color:#fff;padding:12px 28px;border-radius:999px;font-size:28px;font-weight:700;box-shadow:0 4px 12px #0003}.addition-game-score{position:absolute;top:16px;right:16px;z-index:10;background:#fffffff2;padding:8px 16px;border-radius:8px;font-size:18px;font-weight:700;color:#1a202c}.addition-game-arena{position:absolute;right:0;bottom:0;left:0;top:70px;cursor:crosshair;overflow:hidden}.addition-rocks{position:absolute;top:0;right:0;bottom:0;left:0;pointer-events:none}.addition-rock{position:absolute;width:72px;height:44px;background:linear-gradient(145deg,#b0a99e,#8b8580,#6b6560);border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:22px;font-weight:800;color:#1a1a1a;box-shadow:inset 2px 2px 4px #ffffff4d,3px 4px 8px #00000059;transition:opacity .2s,transform .2s}.addition-rock.exploded{opacity:0;pointer-events:none}.addition-rock.explode-anim{animation:rock-explode .5s ease-out forwards}@keyframes rock-explode{0%{opacity:1;transform:translate(-50%,-50%) scale(1)}to{opacity:0;transform:translate(-50%,-50%) scale(2)}}.addition-tank{position:absolute;width:80px;height:50px;transition:top .05s ease-out;pointer-events:none}.tank-body{position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);width:70px;height:38px;background:linear-gradient(180deg,#6b7c5c,#4a5544 30%,#3d4736);border-radius:6px;box-shadow:inset 0 2px 4px #ffffff26,0 4px 10px #0006;border:2px solid #2d3329}.tank-body:before{content:"";position:absolute;top:2px;right:2px;bottom:2px;left:2px;border-radius:4px;background:linear-gradient(90deg,transparent 0%,rgba(255,255,255,.08) 50%,transparent 100%);pointer-events:none}.tank-cannon{position:absolute;left:0;top:50%;transform:translateY(-50%);width:32px;height:10px;background:linear-gradient(90deg,#5a5a5a,#3a3a3a);border-radius:4px;box-shadow:0 2px 6px #00000080}.addition-tank.tank-explode{animation:tank-explode .5s ease-out forwards}@keyframes tank-explode{0%{opacity:1;transform:translate(-50%,-50%) scale(1)}50%{opacity:1;transform:translate(-50%,-50%) scale(1.2)}to{opacity:0;transform:translate(-50%,-50%) scale(2)}}.addition-explosion{position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);font-size:64px;pointer-events:none;animation:explosion-pop .6s ease-out forwards}@keyframes explosion-pop{0%{opacity:1;transform:translate(-50%,-50%) scale(.5)}50%{transform:translate(-50%,-50%) scale(1.2)}to{opacity:0;transform:translate(-50%,-50%) scale(1.5)}}.addition-game-hint{position:absolute;bottom:16px;left:50%;transform:translate(-50%);margin:0;padding:8px 16px;background:#ffffffe6;border-radius:8px;font-size:13px;color:#374151;max-width:90%;text-align:center}.addition-game-play .addition-game-card{display:none}.addition-game-result .addition-game-title{margin-top:8px}.addition-game-result .addition-game-subtitle{margin-bottom:12px}.addition-game-error{color:#b91c1c;font-size:14px;margin:8px 0}.result-avatar{font-size:64px;text-align:center;margin:8px 0}.result-actions{display:flex;gap:12px;justify-content:center;flex-wrap:wrap;margin-top:16px}.addition-game-result .addition-game-btn.secondary{background:#e5e7eb;color:#111827}.addition-game-result .addition-game-btn.secondary:hover{background:#d1d5db}.addition-game-page:not(.addition-game-play) .addition-game-question-bar,.addition-game-page:not(.addition-game-play) .addition-game-score,.addition-game-page:not(.addition-game-play) .addition-game-arena,.addition-game-page:not(.addition-game-play) .addition-game-hint,.addition-game-page:not(.addition-game-play) .addition-game-back-fixed{display:none}.addition-game-result{margin:40px auto;max-width:420px}.addition-feedback-page{display:flex;align-items:center;justify-content:center;padding:20px}.addition-feedback-card{width:100%;max-width:520px;background:#fff;border-radius:12px;padding:24px;box-shadow:0 16px 44px #0003}.addition-feedback-card .addition-game-back{margin-bottom:12px}.addition-feedback-problem{background:#2d5a6b;color:#fff;text-align:center;padding:12px 20px;border-radius:8px;font-size:24px;font-weight:700;margin-bottom:20px}.addition-feedback-visual{display:flex;flex-direction:column;gap:12px;margin-bottom:16px}.addition-feedback-row{display:flex;align-items:center;gap:12px;flex-wrap:wrap}.addition-feedback-row-inner{display:flex;align-items:center;gap:8px;flex:1;min-width:0;background:#fff;border:1px solid #e5e7eb;border-radius:8px;padding:10px 12px}.addition-feedback-shapes{display:flex;flex-wrap:wrap;gap:4px;align-items:center}.addition-feedback-shapes .shape{display:inline-block;flex-shrink:0}.addition-feedback-shapes .shape.square{width:20px;height:20px;background:#3b82f6;border-radius:2px}.addition-feedback-shapes .shape.circle{width:20px;height:20px;background:#22c55e;border-radius:50%}.addition-feedback-dash{width:1px;align-self:stretch;min-height:24px;background:repeating-linear-gradient(to bottom,#94a3b8 0,#94a3b8 4px,transparent 4px,transparent 8px);margin:0 4px}.addition-feedback-row-label{flex-shrink:0;min-width:36px;height:36px;display:flex;align-items:center;justify-content:center;background:#f1f5f9;border-radius:8px;font-weight:700;font-size:16px;color:#1e293b}.addition-feedback-text{color:#b91c1c;font-size:16px;font-weight:600;text-align:center;margin:0 0 16px;line-height:1.4}.addition-feedback-avatar{text-align:center;margin-bottom:20px;font-size:48px;line-height:1.2}.addition-feedback-avatar .avatar-cheering,.addition-feedback-avatar .avatar-sad{display:inline-block}.addition-feedback-continue{display:block;width:100%;margin:0;padding:14px;font-size:18px}@media (max-width: 640px){.addition-game-question-bar{font-size:22px;padding:10px 20px}.addition-rock{width:56px;height:36px;font-size:18px}.addition-tank{width:60px;height:40px}.tank-body{width:52px;height:28px}.tank-cannon{width:24px;height:8px}}.host-create-quiz-page{min-height:100vh;background:#fff;padding:24px 20px 40px;max-width:900px;margin:0 auto}.host-create-quiz-back{background:none;border:none;color:#4f7cff;font-size:14px;cursor:pointer;padding:0 0 16px;margin:0;text-align:left;transition:color .15s ease}.host-create-quiz-back:hover{color:#3d62e0;text-decoration:underline}.host-create-quiz-title{font-size:28px;font-weight:700;color:#2a3143;margin:0 0 8px;text-align:left}.host-create-quiz-subtitle{font-size:15px;color:#6f7688;margin:0 0 28px;text-align:left}.host-create-quiz-cards{display:grid;grid-template-columns:1fr 1fr;gap:24px}.host-create-quiz-card{display:flex;flex-direction:column;align-items:center;text-align:center;border:none;border-radius:12px;padding:28px 24px;cursor:pointer;position:relative;transition:transform .15s ease,box-shadow .2s ease;box-shadow:0 2px 12px #0000000f}.host-create-quiz-card:hover{transform:translateY(-2px);box-shadow:0 8px 24px #0000001a}.host-create-quiz-card:focus-visible{outline:2px solid #4f7cff;outline-offset:2px}.host-create-quiz-card-manual{background:linear-gradient(160deg,#e8f0ff,#f0f5ff)}.host-create-quiz-card-icon-manual{background:#4f7cff;color:#fff}.host-create-quiz-card-ai{background:linear-gradient(160deg,#f3e8ff,#f8f0ff)}.host-create-quiz-card-icon-ai{background:#8b5cf6;color:#fff}.host-create-quiz-ai-badge{position:absolute;top:14px;right:14px;background:#8b5cf6;color:#fff;font-size:11px;font-weight:700;letter-spacing:.5px;padding:4px 10px;border-radius:6px}.host-create-quiz-card-icon{width:48px;height:48px;border-radius:50%;display:flex;align-items:center;justify-content:center;margin-bottom:14px}.host-create-quiz-card-icon svg{flex-shrink:0}.host-create-quiz-card-title{font-size:20px;font-weight:700;color:#2a3143;margin:0 0 8px}.host-create-quiz-card-desc{font-size:14px;color:#6f7688;line-height:1.45;margin:0 0 14px}.host-create-quiz-card-list{list-style:disc;margin:0;padding-left:20px;text-align:left;color:#5f6678;font-size:13px;line-height:1.6}.host-create-quiz-card-list li{margin-bottom:4px}@media (max-width: 640px){.host-create-quiz-cards{grid-template-columns:1fr}.host-create-quiz-title{font-size:24px}}.host-quiz-ai-page{min-height:100vh;background:#fff;padding:24px 20px 40px;max-width:720px;margin:0 auto}.host-quiz-ai-back{display:inline-flex;align-items:center;gap:6px;background:none;border:none;color:#4f7cff;font-size:14px;cursor:pointer;padding:0 0 20px;margin:0;transition:color .15s ease}.host-quiz-ai-back:hover{color:#3d62e0;text-decoration:underline}.host-quiz-ai-header{display:flex;align-items:center;gap:10px;margin-bottom:24px}.host-quiz-ai-header-icon{display:flex;align-items:center;justify-content:center;width:40px;height:40px;border-radius:50%;background:linear-gradient(135deg,#8b5cf6,#a78bfa);color:#fff}.host-quiz-ai-title{font-size:24px;font-weight:700;color:#2a3143;margin:0}.host-quiz-ai-form{display:flex;flex-direction:column;gap:20px}.host-quiz-ai-field{display:flex;flex-direction:column;gap:6px}.host-quiz-ai-label{font-size:14px;font-weight:600;color:#2a3143}.host-quiz-ai-file-input{position:absolute;width:0;height:0;opacity:0;pointer-events:none}.host-quiz-ai-upload-btn{padding:12px 20px;border:2px dashed #c4b5fd;border-radius:10px;background:#faf5ff;color:#6d28d9;font-size:14px;font-weight:500;cursor:pointer;transition:background .15s,border-color .15s}.host-quiz-ai-upload-btn:hover{background:#f3e8ff;border-color:#8b5cf6}.host-quiz-ai-preview-wrap{position:relative;display:inline-block;max-width:100%}.host-quiz-ai-preview{display:block;max-width:100%;max-height:240px;object-fit:contain;border-radius:10px;border:1px solid #e9ecef}.host-quiz-ai-remove-image{margin-top:8px;padding:6px 12px;background:#fee2e2;color:#b91c1c;border:none;border-radius:6px;font-size:13px;cursor:pointer}.host-quiz-ai-remove-image:hover{background:#fecaca}.host-quiz-ai-textarea{width:100%;padding:12px 14px;border:1px solid #e4e7ef;border-radius:8px;font-size:14px;font-family:inherit;resize:vertical;min-height:100px}.host-quiz-ai-textarea:focus{outline:none;border-color:#8b5cf6;box-shadow:0 0 0 3px #8b5cf626}.host-quiz-ai-textarea::placeholder{color:#9ca3af}.host-quiz-ai-hint{font-size:12px;color:#6f7688;margin:0}.host-quiz-ai-settings{display:grid;grid-template-columns:1fr 1fr;gap:20px}.host-quiz-ai-select,.host-quiz-ai-input{padding:10px 12px;border:1px solid #e4e7ef;border-radius:8px;font-size:14px;width:100%}.host-quiz-ai-select:focus,.host-quiz-ai-input:focus{outline:none;border-color:#8b5cf6}.host-quiz-ai-error{padding:12px 14px;background:#fee2e2;color:#b91c1c;border-radius:8px;font-size:14px}.host-quiz-ai-generate-btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:14px 24px;background:linear-gradient(135deg,#8b5cf6,#c084fc);color:#fff;border:none;border-radius:10px;font-size:16px;font-weight:600;cursor:pointer;transition:opacity .2s,transform .15s;align-self:center}.host-quiz-ai-generate-btn:hover:not(:disabled){opacity:.95;transform:translateY(-1px)}.host-quiz-ai-generate-btn:disabled{opacity:.6;cursor:not-allowed}.host-quiz-ai-btn-icon{display:flex}.host-quiz-ai-results{margin-top:32px;padding-top:24px;border-top:1px solid #e4e7ef}.host-quiz-ai-results-title{font-size:18px;font-weight:700;color:#2a3143;margin:0 0 16px}.host-quiz-ai-questions-list{list-style:none;padding:0;margin:0 0 20px}.host-quiz-ai-question-item{padding:12px 0;border-bottom:1px solid #f1f5f9;font-size:14px;color:#374151}.host-quiz-ai-question-item:last-child{border-bottom:none}.host-quiz-ai-answers{margin-top:8px;display:flex;flex-wrap:wrap;gap:8px}.host-quiz-ai-correct{background:#d1fae5;color:#065f46;padding:4px 8px;border-radius:6px;font-size:12px}.host-quiz-ai-wrong{background:#f3f4f6;color:#6b7280;padding:4px 8px;border-radius:6px;font-size:12px}.host-quiz-ai-save-btn,.host-quiz-ai-publish-btn{padding:12px 20px;border-radius:8px;font-size:14px;font-weight:600;cursor:pointer;border:none;transition:opacity .2s}.host-quiz-ai-save-btn{background:#4f7cff;color:#fff}.host-quiz-ai-save-btn:hover:not(:disabled){opacity:.9}.host-quiz-ai-save-btn:disabled{opacity:.6;cursor:not-allowed}.host-quiz-ai-publish-row{display:flex;align-items:center;gap:16px;flex-wrap:wrap}.host-quiz-ai-saved-msg{font-size:14px;color:#059669}.host-quiz-ai-publish-btn{background:linear-gradient(135deg,#8b5cf6,#c084fc);color:#fff}.host-quiz-ai-publish-btn:hover:not(:disabled){opacity:.95}.host-quiz-ai-publish-btn:disabled{opacity:.6;cursor:not-allowed}.host-quiz-ai-published-msg{font-size:14px;color:#059669;font-weight:500;margin:0}.host-quiz-ai-tips{margin-top:32px;padding:20px;background:linear-gradient(160deg,#f5f3ff,#faf5ff);border-radius:12px;border:1px solid #e9d5ff}.host-quiz-ai-tips-title{display:flex;align-items:center;gap:8px;font-size:16px;font-weight:700;color:#2a3143;margin:0 0 12px}.host-quiz-ai-tips-icon{font-size:20px}.host-quiz-ai-tips-list{margin:0;padding-left:20px;color:#5f6678;font-size:14px;line-height:1.6}.host-quiz-ai-tips-list li{margin-bottom:4px}@media (max-width: 640px){.host-quiz-ai-settings{grid-template-columns:1fr}}.play-host-quiz-page{min-height:100vh;background:#f4f7ff;padding:24px;max-width:640px;margin:0 auto}.play-host-quiz-back{background:none;border:none;color:#4f7cff;font-size:14px;cursor:pointer;padding:0 0 16px;margin:0}.play-host-quiz-back:hover{text-decoration:underline}.play-host-quiz-loading,.play-host-quiz-error{margin:20px 0;color:#6b7280}.play-host-quiz-progress{font-size:14px;color:#6b7280;margin-bottom:8px}.play-host-quiz-timer{font-size:14px;font-weight:600;color:#8b5cf6;margin-bottom:16px}.play-host-quiz-question-text{font-size:20px;font-weight:600;color:#1f2937;margin:0 0 20px;line-height:1.4}.play-host-quiz-options{list-style:none;padding:0;margin:0 0 24px}.play-host-quiz-options li{margin-bottom:10px}.play-host-quiz-option{display:block;width:100%;padding:14px 18px;text-align:left;border:2px solid #e5e7eb;border-radius:10px;background:#fff;font-size:16px;cursor:pointer;transition:border-color .15s,background .15s}.play-host-quiz-option:hover:not(:disabled){border-color:#8b5cf6;background:#faf5ff}.play-host-quiz-option.correct{border-color:#10b981;background:#d1fae5}.play-host-quiz-option.wrong{border-color:#ef4444;background:#fee2e2}.play-host-quiz-option:disabled{cursor:default}.play-host-quiz-feedback{margin-top:20px;padding:16px;background:#f3f4f6;border-radius:10px}.play-host-quiz-feedback p{margin:0 0 12px;color:#374151}.play-host-quiz-btn{padding:12px 20px;background:#8b5cf6;color:#fff;border:none;border-radius:8px;font-size:14px;font-weight:600;cursor:pointer}.play-host-quiz-btn:hover{background:#7c3aed}.play-host-quiz-finished{text-align:center;padding:40px 20px}.play-host-quiz-finished-title{font-size:24px;color:#1f2937;margin:0 0 16px}.play-host-quiz-finished-score{font-size:20px;color:#6b7280;margin:0 0 24px}.play-host-quiz-finished .play-host-quiz-btn{display:inline-block}.App{min-height:100vh;margin:0;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,Cantarell,Fira Sans,Droid Sans,Helvetica Neue,sans-serif}.header{display:flex;flex-direction:column;justify-content:center;align-items:center;min-height:100vh;gap:20px}h1{font-size:3rem;color:#333;margin:0}.user-info{display:flex;flex-direction:column;align-items:center;gap:12px;color:#6b7280}.logout-button{background:linear-gradient(135deg,#667eea,#764ba2);color:#fff;border:none;padding:10px 20px;border-radius:8px;font-size:14px;font-weight:600;cursor:pointer;transition:transform .2s,box-shadow .2s}.logout-button:hover{transform:translateY(-1px);box-shadow:0 4px 12px #667eea66}*{margin:0;padding:0;box-sizing:border-box}body{margin:0;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,Cantarell,Fira Sans,Droid Sans,Helvetica Neue,sans-serif;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}#root{width:100%;height:100vh}