body{font-family:Arial,sans-serif;margin:0;color:#111}a{text-decoration:none;color:#07f;margin-right:8px}button{padding:6px 10px}input{padding:6px;width:250px}*{margin:0;padding:0;box-sizing:border-box}body{font-family:Segoe UI,Tahoma,Geneva,Verdana,sans-serif;background:linear-gradient(135deg,#667eea 0%,#764ba2 100%);min-height:100vh;color:#333}.container{max-width:1200px;margin:0 auto;padding:20px}.login-container{display:flex;justify-content:center;align-items:center;min-height:100vh;background:linear-gradient(135deg,#667eea 0%,#764ba2 100%)}.login-card{background:white;padding:40px;border-radius:20px;box-shadow:0 20px 40px #0000001a;width:100%;max-width:400px;text-align:center}.login-card h2{color:#333;margin-bottom:30px;font-size:2rem;font-weight:600}.form-group{margin-bottom:20px;text-align:left}.form-group label{display:block;margin-bottom:8px;color:#555;font-weight:500}.form-input{width:100%;padding:12px 16px;border:2px solid #e1e5e9;border-radius:10px;font-size:16px;transition:all .3s ease;background:#f8f9fa}.form-input:focus{outline:none;border-color:#667eea;background:white;box-shadow:0 0 0 3px #667eea1a}.btn-primary{width:100%;padding:14px;background:linear-gradient(135deg,#667eea 0%,#764ba2 100%);color:#fff;border:none;border-radius:10px;font-size:16px;font-weight:600;cursor:pointer;transition:all .3s ease;margin-top:10px}.btn-primary:hover{transform:translateY(-2px);box-shadow:0 10px 20px #667eea4d}.error-message{background:#fee;color:#c33;padding:12px;border-radius:8px;margin-bottom:20px;border:1px solid #fcc}.demo-credentials{margin-top:20px;padding:15px;background:#f0f8ff;border-radius:10px;font-size:14px;color:#666;border:1px solid #e1e8ed}.dashboard{background:white;border-radius:20px;padding:30px;margin:20px 0;box-shadow:0 10px 30px #0000001a}.dashboard h1{color:#333;margin-bottom:30px;font-size:2.5rem;font-weight:700}.stats-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:20px;margin-bottom:30px}.stat-card{background:linear-gradient(135deg,#667eea 0%,#764ba2 100%);color:#fff;padding:25px;border-radius:15px;text-align:center;box-shadow:0 8px 25px #667eea4d;transition:transform .3s ease}.stat-card:hover{transform:translateY(-5px)}.stat-card.income{background:linear-gradient(135deg,#4facfe 0%,#00f2fe 100%)}.stat-card.expense{background:linear-gradient(135deg,#fa709a 0%,#fee140 100%)}.stat-card.balance{background:linear-gradient(135deg,#a8edea 0%,#fed6e3 100%);color:#333}.stat-value{font-size:2.5rem;font-weight:700;margin-bottom:5px}.stat-label{font-size:1rem;opacity:.9}.navbar{background:white;padding:15px 0;box-shadow:0 2px 10px #0000001a;margin-bottom:20px}.nav-content{display:flex;justify-content:space-between;align-items:center;max-width:1200px;margin:0 auto;padding:0 20px}.nav-brand{font-size:1.5rem;font-weight:700;color:#667eea;text-decoration:none}.nav-links{display:flex;gap:20px;list-style:none}.nav-links a{color:#333;text-decoration:none;font-weight:500;padding:8px 16px;border-radius:8px;transition:all .3s ease}.nav-links a:hover,.nav-links a.active{background:#667eea;color:#fff}.nav-user{display:flex;align-items:center;gap:15px}.user-info{color:#666;font-size:14px}.btn-logout{background:#dc3545;color:#fff;border:none;padding:8px 16px;border-radius:8px;cursor:pointer;font-weight:500;transition:all .3s ease}.btn-logout:hover{background:#c82333;transform:translateY(-1px)}.table-container{background:white;border-radius:15px;overflow:hidden;box-shadow:0 10px 30px #0000001a;margin:20px 0}.table{width:100%;border-collapse:collapse}.table th{background:#f8f9fa;padding:15px;text-align:left;font-weight:600;color:#333;border-bottom:2px solid #e9ecef}.table td{padding:15px;border-bottom:1px solid #e9ecef}.table tr:hover{background:#f8f9fa}.btn{padding:10px 20px;border:none;border-radius:8px;cursor:pointer;font-weight:500;transition:all .3s ease;text-decoration:none;display:inline-block;text-align:center}.btn-success{background:#28a745;color:#fff}.btn-success:hover{background:#218838;transform:translateY(-1px)}.btn-warning{background:#ffc107;color:#212529}.btn-warning:hover{background:#e0a800;transform:translateY(-1px)}.btn-danger{background:#dc3545;color:#fff}.btn-danger:hover{background:#c82333;transform:translateY(-1px)}.btn-primary{background:#007bff;color:#fff}.btn-primary:hover{background:#0056b3;transform:translateY(-1px)}.btn-secondary{background:#6c757d;color:#fff}.btn-secondary:hover{background:#545b62;transform:translateY(-1px)}.btn:disabled{opacity:.6;cursor:not-allowed;transform:none!important}.form-container{background:white;padding:30px;border-radius:15px;box-shadow:0 10px 30px #0000001a;margin:20px 0}.form-row{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:20px;margin-bottom:20px}.form-actions{display:flex;gap:10px;justify-content:flex-end;margin-top:20px}@media (max-width: 768px){.container{padding:10px}.login-card{margin:20px;padding:30px 20px}.stats-grid{grid-template-columns:1fr}.nav-content{flex-direction:column;gap:15px}.nav-links{flex-wrap:wrap;justify-content:center}.form-row{grid-template-columns:1fr}.form-actions{flex-direction:column}}.loading{display:flex;justify-content:center;align-items:center;padding:40px}.spinner{width:40px;height:40px;border:4px solid #f3f3f3;border-top:4px solid #667eea;border-radius:50%;animation:spin 1s linear infinite}@keyframes spin{0%{transform:rotate(0)}to{transform:rotate(360deg)}}