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0}.stat-card{background:#fff;border-bottom:1px solid #e8f5e9;border-radius:12px;box-shadow:0 6px 18px #00000014;min-width:150px;padding:16px;transition:.3s}.stat-card:hover{box-shadow:0 10px 24px #0000001f;transform:translateY(-5px)}.stat-card.primary{border-left:4px solid #4caf50}.stat-card.secondary{border-left:4px solid #2196f3}.stat-number{color:#2e7d32;font-size:3rem;font-weight:700;margin-bottom:10px}.stat-label{color:#555;font-size:1.1rem;font-weight:500}.action-buttons{grid-gap:20px;display:grid;gap:20px;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));margin-top:40px}.action-btn{align-items:center;border:none;border-radius:8px;cursor:pointer;display:flex;font-size:1.2rem;font-weight:500;gap:15px;justify-content:center;padding:20px 30px;text-decoration:none;transition:all .3s 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#0000001f;transform:translateY(-5px)}.big-stat{margin-bottom:30px}.big-number{color:#2e7d32;font-size:5rem;font-weight:700}.big-label{color:#555;font-size:1.3rem;margin-top:10px}.progress-info{text-align:left}.info-item{border-bottom:1px solid #e8f5e9;color:#555;font-size:1.1rem;margin:15px 0;padding:10px 0}.home-btn{background:#ffc107;border:none;border-radius:8px;color:#2e2e2e;cursor:pointer;display:inline-block;font-size:1rem;font-weight:500;margin-bottom:20px;padding:8px 18px;transition:all .2s ease}.home-btn:hover{background:#ffb300;transform:translateY(-2px)}.review-date-group{border-radius:10px;box-shadow:0 2px 8px #00000012;margin-bottom:16px;overflow:hidden}.review-date-header{align-items:center;background:#f1f8e9;border:none;border-left:4px solid #4caf50;color:#2e7d32;cursor:pointer;display:flex;font-size:1.05rem;font-weight:600;justify-content:space-between;padding:14px 20px;transition:background .2s;width:100%}.review-date-header:hover{background:#e8f5e9}.review-groups{margin:20px 0;text-align:left}.empty-state,.error-state,.loading-state{background:#fff;border-bottom:1px solid #e8f5e9;border-radius:12px;box-shadow:0 6px 18px #00000014;color:#555;font-size:1.3rem;margin:30px 0;padding:40px;text-align:center}.error-state{background:#ffebee;border-left:4px solid #f44336;color:#c62828}.empty-state{color:#555}.empty-state p{margin:10px 0}@media (max-width:768px){.app-wrapper{padding:15px}.app-title{font-size:2.8rem}.stats-section{align-items:center;flex-direction:column;gap:20px}.action-buttons{grid-template-columns:1fr}.word-display{padding:20px}.word-main{font-size:3rem}.learn-actions{flex-direction:column}.quiz-options,.review-grid{grid-template-columns:1fr}.quiz-actions{flex-direction:column}}@media (max-width:480px){.app-title{font-size:2.2rem}.word-main{font-size:2.5rem}.big-number{font-size:4rem}}
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