:root{--bg: #f1f5f9;--card: #ffffff;--text: #1e293b;--text-muted: #64748b;--muted: #94a3b8;--primary: #3b82f6;--primary-hover: #2563eb;--border: #e2e8f0;--success: #10b981;--warning: #f59e0b;--danger: #ef4444;--shadow: 0 1px 3px 0 rgba(0, 0, 0, .1), 0 1px 2px -1px rgba(0, 0, 0, .1);--shadow-md: 0 4px 6px -1px rgba(0, 0, 0, .1), 0 2px 4px -2px rgba(0, 0, 0, .1);--shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, .1), 0 4px 6px -4px rgba(0, 0, 0, .1);--radius: 8px;--radius-sm: 6px;--radius-lg: 12px}*{box-sizing:border-box}html,body{height:100%}body{margin:0;font-family:Inter,system-ui,-apple-system,Segoe UI,Roboto,Arial,sans-serif;background:var(--bg);color:var(--text);line-height:1.6;font-size:.875rem}h1,h2,h3,h4,h5,h6{margin:0 0 16px;font-weight:600;line-height:1.3;color:var(--text)}h1{font-size:2rem}h2{font-size:1.5rem}h3{font-size:1.25rem}h4{font-size:1.125rem}h5{font-size:1rem}h6{font-size:.875rem}p{margin:0 0 12px;color:var(--text)}.text-muted{color:var(--text-muted)}.small{font-size:.75rem;color:var(--muted)}main{max-width:1400px;margin:24px auto;padding:0 24px;width:100%;flex:1}.btn{display:inline-flex;align-items:center;gap:8px;padding:10px 16px;border-radius:var(--radius);text-decoration:none;border:1px solid var(--border);background:#fff;color:var(--text);cursor:pointer;font-weight:500;font-size:.875rem;transition:all .2s ease;box-shadow:var(--shadow)}.btn:hover{transform:translateY(-1px);box-shadow:var(--shadow-md)}.btn-primary{background:var(--primary);color:#fff;border-color:var(--primary)}.btn-primary:hover{background:var(--primary-hover);border-color:var(--primary-hover)}.btn-secondary{background:#f1f5f9;color:#1e293b;border-color:#e2e8f0}.btn-secondary:hover{background:#e2e8f0}.btn-danger{background:#fee2e2;border-color:#fecaca;color:#7f1d1d}.btn-danger:hover{background:#fecaca;border-color:#fca5a5}.btn-sm{padding:6px 10px;font-size:.8125rem}label{display:block;font-weight:500;margin-bottom:6px;color:var(--text);font-size:.875rem}input,select,textarea{width:100%;padding:10px 12px;border:1px solid var(--border);border-radius:var(--radius);background:#fff;color:var(--text);font-family:inherit;font-size:.875rem;transition:all .2s ease}input:focus,select:focus,textarea:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px #3b82f61a}input[type=date],input[type=number]{font-variant-numeric:tabular-nums}.form-actions{margin-top:24px;display:flex;gap:12px;justify-content:flex-end}.grid{display:grid;gap:24px}@media (min-width: 640px){.grid{grid-template-columns:repeat(2,1fr)}}@media (min-width: 1024px){.grid{grid-template-columns:repeat(3,1fr)}}@media (min-width: 1200px){.grid{grid-template-columns:repeat(4,1fr)}}.card{background:var(--card);border:1px solid var(--border);border-radius:var(--radius-lg);padding:24px;box-shadow:var(--shadow);transition:all .3s ease}.card:hover{box-shadow:var(--shadow-md)}.card-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:20px;padding-bottom:12px;border-bottom:1px solid var(--border)}.card-header h3{margin:0;font-size:1.125rem;font-weight:600}.table-responsive{width:100%;overflow-x:auto}.table{width:100%;border-collapse:collapse;background:#fff;border:1px solid var(--border);border-radius:var(--radius);overflow:hidden}.table th,.table td{padding:12px 16px;border-bottom:1px solid var(--border);text-align:left}.table thead th{background:#f8fafc;font-weight:600;color:var(--text);font-size:.8125rem;text-transform:uppercase;letter-spacing:.5px}.table tbody tr:last-child td{border-bottom:none}.table-striped tbody tr:nth-child(odd){background:#fafafa}.table tbody tr:hover{background:#f1f5f9}.status{display:inline-block;padding:4px 10px;border-radius:999px;background:#eef2ff;color:#3730a3;border:1px solid #e0e7ff;font-weight:500;font-size:.75rem;text-align:center;min-width:80px}.status-paid{background:#d1fae5;color:#065f46;border-color:#a7f3d0}.status-pending{background:#fde68a;color:#92400e;border-color:#fcd34d}.status-draft{background:#e5e7eb;color:#374151;border-color:#d1d5db}.alert{padding:12px 16px;background:#ecfeff;border:1px solid #67e8f9;border-radius:var(--radius);margin-bottom:20px;display:flex;align-items:flex-start;gap:12px}.alert-success{background:#d1fae5;border-color:#6ee7b7}.alert-error{background:#fee2e2;border-color:#fca5a5}.alert-warning{background:#fef3c7;border-color:#fde68a}.alert-icon{flex-shrink:0;margin-top:2px}.close-alert{margin-left:auto;background:none;border:none;font-size:1.25rem;cursor:pointer;color:var(--muted);padding:0;width:24px;height:24px;display:flex;align-items:center;justify-content:center}.spacer{flex:1}.text-center{text-align:center}.d-flex{display:flex}.justify-content-between{justify-content:space-between}.align-items-center{align-items:center}.gap-2{gap:8px}.gap-3{gap:12px}.mt-3{margin-top:12px}.mb-3{margin-bottom:12px}.search input{width:100%;padding:8px 12px;border:1px solid var(--border);border-radius:var(--radius);background:#f8fafc;transition:all .2s ease}.search input:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px #3b82f61a;background:#fff}