*{margin:0;padding:0;box-sizing:border-box}:root{--primary-color: #007bff;--primary-hover: #0056b3;--secondary-color: #6c757d;--success-color: #28a745;--danger-color: #dc3545;--warning-color: #ffc107;--info-color: #17a2b8;--light-bg: #f8f9fa;--white: #ffffff;--text-dark: #212529;--text-muted: #6c757d;--border-color: #dee2e6;--shadow: 0 2px 4px rgba(0, 0, 0, .1);--shadow-lg: 0 4px 6px rgba(0, 0, 0, .1);--shadow-xl: 0 10px 25px rgba(0, 0, 0, .1);--border-radius: 8px;--transition: all .3s ease}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,Cantarell,Fira Sans,Droid Sans,Helvetica Neue,sans-serif;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;background-color:var(--light-bg);color:var(--text-dark);line-height:1.6}code{font-family:source-code-pro,Menlo,Monaco,Consolas,Courier 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auto}.hero-title{font-size:3.5rem;font-weight:700;margin-bottom:20px;display:flex;align-items:center;justify-content:center;gap:15px}.hero-icon{font-size:3rem}.hero-subtitle{font-size:1.25rem;margin-bottom:40px;opacity:.9}.hero-buttons{display:flex;gap:15px;justify-content:center;flex-wrap:wrap}.features{padding:80px 20px;background-color:var(--white)}.features-container{max-width:1200px;margin:0 auto}.features-container h2{text-align:center;font-size:2.5rem;margin-bottom:50px;color:var(--text-dark)}.features-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:30px}.feature-card{background:var(--white);padding:40px 30px;border-radius:var(--border-radius);box-shadow:var(--shadow-lg);text-align:center;transition:var(--transition)}.feature-card:hover{transform:translateY(-5px);box-shadow:var(--shadow-xl)}.feature-icon{font-size:3rem;color:var(--primary-color);margin-bottom:20px}.feature-card 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a{color:var(--primary-color);font-weight:600}.signup-footer a:hover{text-decoration:underline}@media(max-width:768px){.signup-card{padding:30px 20px}.signup-card h2{font-size:1.75rem}}.signin-page{min-height:calc(100vh - 140px);display:flex;align-items:center;justify-content:center;padding:40px 20px;background:linear-gradient(135deg,#f5f7fa,#c3cfe2)}.signin-container{width:100%;max-width:450px}.signin-card{background:var(--white);padding:40px;border-radius:var(--border-radius);box-shadow:var(--shadow-xl)}.signin-card h2{font-size:2rem;margin-bottom:10px;color:var(--text-dark);text-align:center}.signin-subtitle{text-align:center;color:var(--text-muted);margin-bottom:30px}.signin-form{display:flex;flex-direction:column;gap:20px}.signin-footer{text-align:center;margin-top:20px;color:var(--text-muted)}.signin-footer a{color:var(--primary-color);font-weight:600}.signin-footer a:hover{text-decoration:underline}@media(max-width:768px){.signin-card{padding:30px 20px}.signin-card h2{font-size:1.75rem}}.profile-page{min-height:calc(100vh - 140px);padding:40px 20px;background:var(--light-bg)}.profile-container{max-width:700px;margin:0 auto}.profile-card{background:var(--white);padding:40px;border-radius:var(--border-radius);box-shadow:var(--shadow-xl)}.profile-header{text-align:center;margin-bottom:40px}.profile-avatar{width:120px;height:120px;border-radius:50%;margin:0 auto 20px;background:var(--light-bg);display:flex;align-items:center;justify-content:center;overflow:hidden;border:4px solid var(--primary-color)}.profile-avatar img{width:100%;height:100%;object-fit:cover}.avatar-icon{font-size:3rem;color:var(--primary-color)}.profile-header h2{font-size:2rem;margin-bottom:10px;color:var(--text-dark)}.profile-header p{color:var(--text-muted)}.profile-form{display:flex;flex-direction:column;gap:20px}.form-group 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p{color:var(--text-muted);font-size:1.1rem}.expense-actions{display:flex;gap:15px;flex-wrap:wrap}.expense-form-card{background:var(--white);padding:30px;border-radius:var(--border-radius);box-shadow:var(--shadow-lg);margin-bottom:30px}.expense-form-card h3{font-size:1.5rem;margin-bottom:20px;color:var(--text-dark)}.expense-form{display:flex;flex-direction:column;gap:20px}.form-row{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:20px}.form-group{display:flex;flex-direction:column;gap:8px}.form-group label{font-weight:500;color:var(--text-dark);font-size:14px}.form-group input,.form-group textarea{padding:12px 15px;border:2px solid var(--border-color);border-radius:var(--border-radius);font-size:14px;transition:var(--transition)}.form-group input:focus,.form-group textarea:focus{border-color:var(--primary-color);box-shadow:0 0 0 3px #007bff1a}.form-group textarea{resize:vertical;min-height:80px}.charts-section{display:grid;grid-template-columns:repeat(auto-fit,minmax(400px,1fr));gap:30px;margin-bottom:30px}.chart-card{background:var(--white);padding:30px;border-radius:var(--border-radius);box-shadow:var(--shadow-lg)}.chart-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:20px;flex-wrap:wrap;gap:15px}.chart-header-actions{display:flex;align-items:center;gap:15px;flex-wrap:wrap}.filter-type-selector{display:flex;align-items:center;gap:8px}.filter-type-selector label{font-size:12px;font-weight:600;color:var(--text-dark);white-space:nowrap}.filter-type-select{padding:8px 12px;border:2px solid var(--border-color);border-radius:var(--border-radius);font-size:14px;background:var(--white);color:var(--text-dark);cursor:pointer;transition:var(--transition);min-width:150px}.filter-type-select:focus{outline:none;border-color:var(--primary-color);box-shadow:0 0 0 3px #007bff1a}.chart-card h3{font-size:1.25rem;margin:0;color:var(--text-dark);display:flex;align-items:center;gap:10px}.btn-clear-filters{background-color:var(--secondary-color);color:var(--white);padding:8px 16px;border-radius:var(--border-radius);font-size:14px;font-weight:500;border:none;cursor:pointer;transition:var(--transition)}.btn-clear-filters:hover{background-color:#5a6268;transform:translateY(-2px);box-shadow:var(--shadow)}.chart-filters{display:flex;gap:15px;margin-bottom:20px;flex-wrap:wrap;padding:15px;background:var(--light-bg);border-radius:var(--border-radius)}.filter-group{display:flex;flex-direction:column;gap:5px}.filter-group label{font-size:12px;font-weight:600;color:var(--text-dark)}.filter-select{padding:8px 12px;border:2px solid var(--border-color);border-radius:var(--border-radius);font-size:14px;background:var(--white);color:var(--text-dark);cursor:pointer;transition:var(--transition);min-width:150px}.filter-select:focus{outline:none;border-color:var(--primary-color);box-shadow:0 0 0 3px #007bff1a}.filter-select:disabled{background-color:#e9ecef;cursor:not-allowed;opacity:.6}.date-range-filter{grid-column:1 / -1;margin-bottom:10px}.date-range-inputs{display:flex;align-items:center;gap:10px;flex-wrap:wrap}.filter-date-input{padding:8px 12px;border:2px solid var(--border-color);border-radius:var(--border-radius);font-size:14px;background:var(--white);color:var(--text-dark);transition:var(--transition);flex:1;min-width:150px}.filter-date-input:focus{outline:none;border-color:var(--primary-color);box-shadow:0 0 0 3px #007bff1a}.date-range-separator{color:var(--text-muted);font-weight:500;font-size:14px}.btn-show-table{padding:8px 16px;background-color:var(--primary-color);color:var(--white);border:none;border-radius:var(--border-radius);font-size:14px;font-weight:500;cursor:pointer;transition:var(--transition);white-space:nowrap}.btn-show-table:hover:not(:disabled){background-color:#0056b3;transform:translateY(-2px);box-shadow:var(--shadow)}.btn-show-table:disabled{background-color:#6c757d;cursor:not-allowed;opacity:.6}.no-filter-message{padding:20px;text-align:center;color:var(--text-muted);font-style:italic;background:var(--light-bg);border-radius:var(--border-radius)}.chart-container{height:300px;position:relative;cursor:pointer}.chart-container canvas{pointer-events:auto!important}.chartjs-tooltip{pointer-events:none!important}.no-data-message{display:flex;align-items:center;justify-content:center;height:100%;color:var(--text-muted);font-style:italic}.date-filter-active{background:#007bff1a;border-left:4px solid var(--primary-color);padding:15px;margin-bottom:20px;border-radius:var(--border-radius)}.date-filter-active p{color:var(--text-dark);font-weight:500;margin:0}.date-filter-active p strong{color:var(--primary-color)}.expense-summary{margin-bottom:30px}.summary-card{background:linear-gradient(135deg,#667eea,#764ba2);color:var(--white);padding:30px;border-radius:var(--border-radius);box-shadow:var(--shadow-lg);text-align:center;position:relative}.summary-card h3{font-size:1.25rem;margin-bottom:15px;opacity:.9;display:flex;align-items:center;justify-content:center;gap:10px;flex-wrap:wrap}.btn-clear-date-filter{background:#fff3;color:var(--white);border:none;border-radius:50%;width:24px;height:24px;display:flex;align-items:center;justify-content:center;cursor:pointer;font-size:14px;transition:var(--transition);padding:0}.btn-clear-date-filter:hover{background:#ffffff4d;transform:scale(1.1)}.total-amount{font-size:3rem;font-weight:700;margin-bottom:10px}.expense-count{font-size:1rem;opacity:.9}.expenses-list{margin-top:30px}.loading-container,.empty-state{text-align:center;padding:60px 20px;background:var(--white);border-radius:var(--border-radius);box-shadow:var(--shadow)}.empty-state p{color:var(--text-muted);font-size:1.1rem}.expenses-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(320px,1fr));gap:25px}.expenses-table-container{background:var(--white);border-radius:var(--border-radius);box-shadow:var(--shadow-lg);overflow-x:auto;margin-top:20px}.expenses-table{width:100%;border-collapse:collapse;font-size:.95rem}.expenses-table thead{background:linear-gradient(135deg,#667eea,#764ba2);color:var(--white)}.expenses-table th{padding:15px 12px;text-align:left;font-weight:600;font-size:.9rem;text-transform:uppercase;letter-spacing:.5px;white-space:nowrap}.expenses-table th.sortable{cursor:pointer;-webkit-user-select:none;user-select:none;position:relative;transition:background-color .2s}.expenses-table th.sortable:hover{background-color:#ffffff1a}.expenses-table th.sortable span:first-child{margin-right:8px}.sort-icons{display:inline-flex;flex-direction:column;margin-left:8px;gap:2px}.sort-icons svg{font-size:10px;opacity:.3;transition:opacity .2s,color .2s}.sort-icons svg.active{opacity:1;color:var(--white);font-size:12px}.expenses-table tbody tr{border-bottom:1px solid var(--border-color);transition:background-color .2s}.expenses-table tbody tr:hover{background-color:#667eea0d}.expenses-table tbody tr:last-child{border-bottom:none}.expenses-table td{padding:15px 12px;color:var(--text-dark);vertical-align:middle}.expense-name{font-weight:600;color:var(--primary-color)}.expense-description-cell{max-width:300px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.expense-total{font-weight:600;color:var(--primary-color)}.expense-actions-cell{display:flex;gap:8px;align-items:center}.expense-actions-cell .btn-icon{background:var(--light-bg);color:var(--text-dark);border:1px solid var(--border-color);width:32px;height:32px;border-radius:50%;display:flex;align-items:center;justify-content:center;cursor:pointer;transition:var(--transition);font-size:14px}.expense-actions-cell .btn-icon:hover{background:var(--primary-color);color:var(--white);border-color:var(--primary-color);transform:scale(1.1)}.expense-actions-cell .btn-icon.delete:hover{background:#dc3545;border-color:#dc3545}@media(max-width:768px){.expenses-table-container{overflow-x:auto}.expenses-table{min-width:800px}.expenses-table th,.expenses-table td{padding:12px 8px;font-size:.85rem}.expense-description-cell{max-width:200px}}.expense-card{background:var(--white);border-radius:var(--border-radius);box-shadow:var(--shadow);overflow:hidden;transition:var(--transition)}.expense-card:hover{transform:translateY(-5px);box-shadow:var(--shadow-xl)}.expense-card-header{background:linear-gradient(135deg,#667eea,#764ba2);color:var(--white);padding:20px;display:flex;justify-content:space-between;align-items:center}.expense-card-header h3{font-size:1.25rem;font-weight:600}.expense-actions-small{display:flex;gap:10px}.btn-icon{background:#fff3;color:var(--white);border:none;width:35px;height:35px;border-radius:50%;display:flex;align-items:center;justify-content:center;cursor:pointer;transition:var(--transition)}.btn-icon:hover{background:#ffffff4d;transform:scale(1.1)}.btn-icon.delete:hover{background:#dc3545cc}.expense-card-body{padding:20px}.expense-purpose{font-size:.95rem;color:var(--text-muted);margin-bottom:10px}.expense-description{color:var(--text-dark);margin-bottom:15px;line-height:1.6}.expense-details{display:flex;flex-direction:column;gap:8px;margin-bottom:15px;padding:15px;background:var(--light-bg);border-radius:var(--border-radius)}.expense-details span{font-size:.9rem;color:var(--text-dark)}.expense-date{font-size:.85rem;color:var(--text-muted);font-style:italic}@media(max-width:768px){.expense-header{flex-direction:column;align-items:flex-start}.expense-header h1{font-size:2rem}.expense-actions{width:100%}.expense-actions .btn{flex:1;justify-content:center}.charts-section{grid-template-columns:1fr}.chart-container{height:250px}.expenses-grid,.form-row{grid-template-columns:1fr}}.error-page{min-height:100vh;display:flex;align-items:center;justify-content:center;background:linear-gradient(135deg,#f5f7fa,#c3cfe2);padding:20px}.error-container{text-align:center;background:var(--white);padding:60px 40px;border-radius:var(--border-radius);box-shadow:var(--shadow-xl);max-width:500px;width:100%}.error-icon{font-size:5rem;color:var(--danger-color);margin-bottom:20px}.error-container h1{font-size:4rem;color:var(--text-dark);margin-bottom:10px;font-weight:700}.error-container h2{font-size:1.5rem;color:var(--text-dark);margin-bottom:15px}.error-container p{color:var(--text-muted);margin-bottom:30px;font-size:1.1rem}.error-link{display:inline-flex;align-items:center;gap:8px;background-color:var(--primary-color);color:var(--white);padding:12px 30px;border-radius:var(--border-radius);font-weight:600;transition:var(--transition)}.error-link:hover{background-color:var(--primary-hover);transform:translateY(-2px);box-shadow:var(--shadow-lg)}@media(max-width:768px){.error-container{padding:40px 20px}.error-icon{font-size:4rem}.error-container h1{font-size:3rem}}