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.2s}.btn-export:hover{background:#388e3c}.loading{text-align:center;padding:40px;color:#666;font-size:16px}.empty-state{text-align:center;padding:60px 20px}.empty-state p{color:#666;font-size:16px;margin-bottom:24px}.empty-state .btn{display:inline-block;padding:12px 24px;border-radius:4px;text-decoration:none;cursor:pointer;transition:all .2s}.empty-state .btn-primary{background:#4caf50;color:#fff;border:none}.sessions-list{margin-top:16px}.session-card{background:#fff;border-radius:8px;margin-bottom:12px;box-shadow:0 2px 8px #0000000d;overflow:hidden}.session-header{padding:16px;cursor:pointer;display:flex;justify-content:space-between;align-items:flex-start;transition:background .2s}.session-header:hover{background:#fafafa}.session-info{flex:1}.session-date{font-size:14px;font-weight:600;color:#333;margin-bottom:8px}.session-meta{display:flex;gap:12px;font-size:13px;color:#666;flex-wrap:wrap}.btn-delete{background:#ff5252;color:#fff;border:none;padding:6px 12px;border-radius:4px;cursor:pointer;font-size:12px;transition:all .2s}.btn-delete:hover{background:#e64545}.session-items{padding:16px;background:#fafafa;border-top:1px solid #eee}.item-row{padding:12px;background:#fff;border-radius:4px;margin-bottom:8px}.item-display{display:flex;justify-content:space-between;align-items:center;gap:12px}.item-info{flex:1;display:flex;flex-direction:column;gap:4px}.item-name{font-weight:500;color:#333;font-size:15px}.item-category{color:#666;font-size:13px}.item-actions{display:flex;align-items:center;gap:12px}.item-price{font-weight:600;color:#4caf50;font-size:15px}.btn-edit{background:none;border:1px solid #4CAF50;color:#4caf50;padding:4px 8px;border-radius:4px;cursor:pointer;font-size:12px;transition:all .2s}.btn-edit:hover{background:#4caf50;color:#fff}.item-edit-form{display:flex;flex-direction:column;gap:8px}.item-edit-form input{padding:8px;border:1px solid #ddd;border-radius:4px;font-size:14px;transition:border-color .2s}.item-edit-form input:focus{outline:none;border-color:#4caf50}.edit-buttons{display:flex;gap:8px}.btn-save{flex:1;padding:8px;background:#4caf50;color:#fff;border:none;border-radius:4px;cursor:pointer;font-size:13px;transition:all .2s}.btn-save:hover{background:#388e3c}.btn-cancel{flex:1;padding:8px;background:#ff5252;color:#fff;border:none;border-radius:4px;cursor:pointer;font-size:13px;transition:all .2s}.btn-cancel:hover{background:#e64545}@media (max-width: 768px){.history-page{padding:16px}.history-page .header h1{font-size:20px}.btn-export{padding:6px 12px;font-size:12px}.session-header{flex-direction:column;gap:12px}.btn-delete{align-self:flex-end}.item-display{flex-direction:column;align-items:flex-start}.item-actions{width:100%;justify-content:space-between}}