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infinite}.empty-text{color:var(--text-muted);font-size:16px;margin-bottom:20px}.empty-action{background:linear-gradient(135deg,var(--primary),var(--secondary));color:#fff;padding:10px 24px;border-radius:var(--radius-md);font-size:15px;font-weight:500;transition:all var(--transition-fast)}.empty-action:hover{transform:translateY(-2px);box-shadow:var(--shadow-glow)}@media(max-width:767px){.hero-section{padding:24px 16px}.hero-title{font-size:24px}.features-grid{grid-template-columns:1fr}.hero-stats{flex-wrap:wrap}.stat-card{min-width:calc(50% - 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var(--transition-fast)}.bank-item:hover{border-color:var(--primary)}.bank-item-main{display:flex;align-items:center;justify-content:space-between;padding:20px;gap:16px}.bank-item-info{flex:1;min-width:0}.bank-item-name{font-weight:600;font-size:16px;margin-bottom:6px;display:flex;align-items:center;gap:8px}.bank-item-icon{font-size:20px}.bank-item-meta{display:flex;gap:8px;font-size:13px;color:var(--text-muted);margin-bottom:8px}.bank-item-difficulties{display:flex;gap:6px}.diff-tag{font-size:11px;padding:2px 8px;border-radius:10px}.diff-tag.easy{background:#4caf5026;color:#69f0ae}.diff-tag.medium{background:#ff980026;color:#ffd740}.diff-tag.hard{background:#f4433626;color:#ff5252}.bank-item-actions{display:flex;gap:8px;flex-shrink:0}.bank-preview{border-top:1px solid var(--border-color);padding:16px 20px;background:#00000026}.preview-filters{display:flex;gap:10px;margin-bottom:12px;flex-wrap:wrap;align-items:center}.filter-input{flex:1;min-width:180px;padding:8px 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var(--border-color);display:flex;justify-content:flex-end}.import-stats{display:flex;gap:12px;margin-bottom:20px}.import-stat{flex:1;text-align:center;padding:12px;background:#ffffff0a;border-radius:var(--radius-md)}.import-stat.success .import-stat-value{color:var(--success)}.import-stat.warning .import-stat-value{color:var(--warning)}.import-stat.error .import-stat-value{color:var(--error)}.import-stat-value{display:block;font-size:24px;font-weight:700;font-family:var(--font-title);color:var(--text-primary)}.import-stat-label{font-size:12px;color:var(--text-muted)}.import-errors h4{font-size:14px;margin-bottom:8px;color:var(--error)}.error-list{display:flex;flex-direction:column;gap:6px;max-height:200px;overflow-y:auto}.error-item{display:flex;gap:8px;font-size:13px;padding:6px 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