.problems-container{margin:0 auto;padding:20px;font-family:Arial,sans-serif}.problems-heading{display:flex;justify-content:space-between;align-items:center;margin-bottom:20px}.problems-heading h2{font-size:1.8em;color:#2c3e50;margin:0}.date-filter{display:flex;gap:15px;margin-bottom:20px;align-items:center}.filter-group{flex:1}.filter-group .form-control{width:100%;padding:8px;border:1px solid #d1d3e2;border-radius:4px;font-size:1em}.filter-group .p-calendar{width:100%}.filter-button{background:#3498db;border:none;padding:8px 16px;color:#fff;border-radius:4px;font-size:1em;cursor:pointer}.filter-button:hover{background:#2980b9}.loading{text-align:center;padding:20px}.error{font-size:1.2em;color:#e74c3c}.error,.no-problems{text-align:center;padding:20px;background:#f8f9fa;border-radius:8px}.no-problems{font-size:1.1em;color:#7f8c8d}.table-container{background:#fff;border-radius:8px;box-shadow:0 2px 8px rgba(0,0,0,.1)}.MuiTable-root{border-collapse:collapse}.MuiTableCell-head{font-weight:600;color:#2c3e50;background:#f1f3f5;border-bottom:2px solid #d1d3e2;text-align:left}.MuiTableCell-body{color:#34495e;border-bottom:1px solid #e8ecef}.MuiTableRow-root:nth-child(2n){background:#f9fafb}.MuiTableRow-root:hover{background:#e8f4fd}.MuiTablePagination-root{margin-top:10px;color:#34495e}