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0;font-weight:500}.speed-actions{display:flex;gap:1.5rem;justify-content:center;margin-top:2rem}.retry-btn,.menu-btn{padding:1rem 2.5rem;font-size:1.2rem;border:none;border-radius:12px;cursor:pointer;font-weight:600;transition:all .3s}.retry-btn{background:linear-gradient(135deg,#667eea,#764ba2);color:#fff}.retry-btn:hover{transform:translateY(-2px);box-shadow:0 8px 20px #667eea4d}.menu-btn{background:#fff;color:#667eea;border:2px solid #667eea}.menu-btn:hover{background:#f0f3ff;transform:translateY(-2px)}@media(max-width:768px){.speed-start-content h1{font-size:2.5rem}.speed-description{padding:1.5rem}.speed-description p{font-size:1.1rem}.start-btn{padding:1rem 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.3s;font-size:1rem}.region-tab:hover{border-color:#667eea}.region-tab.active{background:linear-gradient(135deg,#667eea,#764ba2);color:#fff;border-color:#667eea}.learn-content{display:grid;grid-template-columns:350px 1fr;gap:2rem;min-height:500px}.states-list{background:#fff;border-radius:15px;padding:1.5rem;box-shadow:0 2px 10px #0000001a;max-height:70vh;overflow-y:auto}.states-list h3{margin-top:0;color:#2c3e50;border-bottom:2px solid #e0e0e0;padding-bottom:.5rem}.state-item{display:flex;align-items:center;justify-content:space-between;padding:1rem;border-radius:10px;cursor:pointer;transition:all .3s;margin-bottom:.5rem}.state-item:hover{background:#f8f9fa}.state-item.selected{background:linear-gradient(135deg,#667eea,#764ba2);color:#fff}.state-name{flex:1;font-weight:500}.state-abbr{font-size:.9rem;font-weight:600;padding:.25rem .75rem;border-radius:8px;background:#0000001a}.state-item.selected .state-abbr{background:#ffffff4d}.state-details{background:#fff;border-radius:15px;padding:2rem;box-shadow:0 2px 10px #0000001a}.state-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:2rem;padding-bottom:1rem;border-bottom:2px solid #e0e0e0}.state-title{display:flex;flex-direction:column;gap:.5rem}.state-header h2{margin:0;color:#2c3e50}.state-nickname{color:#7f8c8d;font-style:italic;font-size:1.1rem}.state-shape-display{display:flex;justify-content:center;margin-bottom:2rem;padding:2rem;background:#f8f9fa;border-radius:15px}.state-shape-large{width:300px;height:auto;filter:drop-shadow(0 4px 12px rgba(0,0,0,.15))}.detail-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:1rem;margin-bottom:2rem}.detail-card{background:#f8f9fa;padding:1.5rem;border-radius:10px;border-left:4px solid #667eea}.detail-card h4{margin:0 0 .5rem;color:#7f8c8d;font-size:.9rem}.detail-card p{margin:0;color:#2c3e50;font-size:1.1rem;font-weight:500}.detail-section{background:#f8f9fa;padding:1.5rem;border-radius:10px;margin-bottom:1rem}.detail-section h4{margin:0 0 1rem;color:#2c3e50}.detail-section p{margin:0;color:#555;line-height:1.6;font-size:1.05rem}.no-selection{display:flex;align-items:center;justify-content:center;background:#fff;border-radius:15px;box-shadow:0 2px 10px #0000001a}.no-selection p{color:#7f8c8d;font-size:1.2rem}@media(max-width:1024px){.learn-content{grid-template-columns:1fr}.states-list{max-height:300px}}@media(max-width:768px){.learn-states{padding:1rem}.header-bar{flex-direction:column;align-items:flex-start;gap:1rem}.region-tabs{gap:.5rem}.region-tab{padding:.5rem 1rem;font-size:.9rem}.detail-grid{grid-template-columns:1fr}.state-shape-large{width:200px}}.states-quiz,.states-quiz-complete,.quiz-loading{max-width:900px;margin:0 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#667eea33}.option-btn.selected{border-color:#667eea;background:#f0f3ff}.option-btn.correct{border-color:#2ecc71;background:#d4edda;color:#155724}.option-btn.incorrect{border-color:#e74c3c;background:#f8d7da;color:#721c24}.option-btn:disabled{cursor:not-allowed;opacity:.7}.answer-feedback{text-align:center;margin-top:2rem}.feedback{display:flex;align-items:center;justify-content:center;gap:1rem;padding:1.5rem;border-radius:15px;margin-bottom:1.5rem;font-size:1.2rem;font-weight:500}.correct-feedback{background:#d4edda;color:#155724}.incorrect-feedback{background:#f8d7da;color:#721c24}.feedback-icon{font-size:2rem}.quiz-btn{padding:1rem 2.5rem;border:none;border-radius:12px;font-size:1.1rem;cursor:pointer;transition:all .3s;font-weight:600}.quiz-btn.primary{background:linear-gradient(135deg,#667eea,#764ba2);color:#fff}.quiz-btn.primary:hover{transform:translateY(-2px);box-shadow:0 8px 20px #667eea4d}.states-quiz-complete{text-align:center}.states-quiz-complete h2{font-size:2.5rem;color:#2c3e50;margin-bottom:2rem}.quiz-score{display:flex;justify-content:center;margin:3rem 0}.score-circle{width:250px;height:250px;border-radius:50%;display:flex;flex-direction:column;align-items:center;justify-content:center;color:#fff;box-shadow:0 15px 40px #0003}.score-percentage{font-size:4rem;font-weight:700;margin-bottom:.5rem}.score-fraction{font-size:1.5rem;opacity:.9}.quiz-stats{background:#fff;border-radius:15px;padding:2rem;margin:2rem 0;box-shadow:0 5px 15px #0000001a}.quiz-stats p{font-size:1.2rem;color:#2c3e50;margin:1rem 0;font-weight:500}.quiz-loading{text-align:center;padding:4rem;font-size:1.5rem;color:#7f8c8d}@media(max-width:768px){.states-quiz,.states-quiz-complete{padding:1rem}.question-card{padding:2rem 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h4{color:#555;font-size:1.1rem;margin-top:1.5rem;margin-bottom:1rem}.profile-content{display:flex;flex-direction:column;gap:1rem}.profile-item{display:flex;justify-content:space-between;padding:.75rem;background:#f8f9fa;border-radius:10px}.profile-label{color:#7f8c8d;font-weight:500}.profile-value{color:#2c3e50;font-weight:700}.stat-row{display:flex;justify-content:space-between;padding:.75rem 0;border-bottom:1px solid #f0f0f0}.stat-row:last-child{border-bottom:none}.stat-value{font-weight:700;color:#667eea}.stat-value.correct{color:#2ecc71}.stat-value.incorrect{color:#e74c3c}.mastery-overview{grid-column:span 2}.mastery-summary{text-align:center;margin-bottom:2rem}.mastery-circle{position:relative;width:200px;height:200px;margin:0 auto 1rem}.mastery-circle svg{transform:rotate(-90deg)}.mastery-text{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);text-align:center}.mastery-number{font-size:3rem;font-weight:700;color:#667eea;line-height:1}.mastery-label{font-size:1.5rem;color:#7f8c8d}.mastery-description{font-size:1.2rem;color:#555;font-weight:500}.continent-breakdown{background:#f8f9fa;padding:1.5rem;border-radius:10px}.continent-stat{margin-bottom:1.5rem}.continent-stat:last-child{margin-bottom:0}.continent-header{display:flex;justify-content:space-between;margin-bottom:.5rem;font-weight:600;color:#2c3e50}.progress-bar-small{background:#e0e0e0;height:12px;border-radius:6px;overflow:hidden}.progress-fill{background:linear-gradient(90deg,#667eea,#764ba2);height:100%;transition:width .5s ease;border-radius:6px}.badges-display{grid-column:span 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1}}@media(max-width:768px){.stats-page{padding:1rem}.stats-header{flex-direction:column;align-items:flex-start;gap:1rem}.badges-grid{grid-template-columns:repeat(auto-fill,minmax(140px,1fr))}.badge-item{padding:1rem}.badge-icon{font-size:2rem}.mastery-circle{width:150px;height:150px}.mastery-number{font-size:2.5rem}}.map-explorer{min-height:100vh;background:linear-gradient(135deg,#667eea,#764ba2);padding:2rem}.header-bar{display:flex;align-items:center;gap:1.5rem;margin-bottom:2rem}.back-btn{padding:.75rem 1.5rem;background:#fff3;color:#fff;border:2px solid rgba(255,255,255,.3);border-radius:12px;font-size:1rem;font-weight:600;cursor:pointer;transition:all .3s ease;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px)}.back-btn:hover{background:#ffffff4d;transform:translate(-5px)}.header-bar h2{margin:0;color:#fff;font-size:2rem;font-weight:700;text-shadow:0 2px 10px 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fadeIn{0%{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}@media(max-width:768px){.map-explorer{padding:1rem}.header-bar{flex-direction:column;align-items:flex-start;gap:1rem}.header-bar h2{font-size:1.5rem}.continent-selector{padding:1rem}.continent-selector h3{font-size:1.1rem}.continent-buttons{gap:.5rem}.continent-btn{padding:.625rem 1.25rem;font-size:.9rem}}.app{min-height:100vh;background:linear-gradient(135deg,#f5f7fa,#c3cfe2)}.back-btn{background:#3498db;color:#fff;border:none;padding:.75rem 1.5rem;border-radius:10px;cursor:pointer;font-size:1rem;transition:background .3s;font-family:inherit}.back-btn:hover{background:#2980b9}