:root{--primary:#4a90d9;--primary-light:#ebf2fa;--primary-dark:#3a7bc8;--bg:#f8f9fb;--white:#fff;--text:#333;--text-light:#6b7280;--border:#e5e7eb;--danger:#ef4444;--danger-light:#fee2e2;--success:#10b981;--warning:#f59e0b;--shadow:0 1px 3px #0000000f;--shadow-md:0 4px 12px #00000014;--radius:8px;--font:"Segoe UI", system-ui, -apple-system, sans-serif}*,:before,:after{box-sizing:border-box;margin:0;padding:0}body{font-family:var(--font);background:var(--bg);color:var(--text);font-size:14px;line-height:1.5}#root{min-height:100vh}.app-layout{min-height:100vh;display:flex}.sidebar{background:var(--white);border-right:1px solid var(--border);z-index:10;flex-direction:column;width:240px;transition:transform .3s;display:flex;position:fixed;top:0;bottom:0;left:0}.sidebar-collapsed .sidebar{transform:translate(-240px)}.sidebar-brand{border-bottom:1px solid var(--border);justify-content:space-between;align-items:center;padding:24px 20px;display:flex}.sidebar-brand h2{color:var(--primary);margin:0;font-size:18px;font-weight:600}.sidebar-nav{flex:1;padding:12px 0}.nav-link{color:var(--text-light);align-items:center;gap:10px;padding:10px 20px;font-size:14px;text-decoration:none;transition:all .15s;display:flex}.nav-link:hover{background:var(--primary-light);color:var(--primary)}.nav-link.active{background:var(--primary-light);color:var(--primary);border-right:3px solid var(--primary);font-weight:500}.nav-icon{font-size:16px}.sidebar-footer{border-top:1px solid var(--border);flex-direction:column;gap:8px;padding:16px 20px;display:flex}.sidebar-user{color:var(--text-light);font-size:13px}.btn-logout{border:1px solid var(--border);border-radius:var(--radius);color:var(--text-light);cursor:pointer;background:0 0;padding:6px 12px;font-size:13px;transition:all .15s}.btn-logout:hover{border-color:var(--danger);color:var(--danger)}.main-content{flex:1;max-width:calc(100% - 240px);margin-left:240px;padding:32px;transition:margin-left .3s,max-width .3s}.sidebar-collapsed .main-content{max-width:100%;margin-left:0}.sidebar-toggle{cursor:pointer;color:var(--text-light);background:0 0;border:none;padding:4px;font-size:18px;line-height:1}.sidebar-toggle:hover{color:var(--primary)}.sidebar-open{z-index:20;background:var(--white);border:1px solid var(--border);border-radius:var(--radius);cursor:pointer;width:36px;height:36px;box-shadow:var(--shadow);color:var(--text-light);justify-content:center;align-items:center;font-size:18px;display:flex;position:fixed;top:12px;left:12px}.sidebar-open:hover{color:var(--primary);border-color:var(--primary)}.login-container{background:var(--bg);justify-content:center;align-items:center;min-height:100vh;display:flex}.login-card{background:var(--white);box-shadow:var(--shadow-md);border-radius:12px;width:100%;max-width:400px;padding:40px}.login-card h1{color:var(--primary);text-align:center;margin-bottom:4px;font-size:24px;font-weight:600}.login-subtitle{color:var(--text-light);text-align:center;margin-bottom:24px;font-size:14px}.login-link{text-align:center;color:var(--text-light);margin-top:16px;font-size:14px}.login-link a{color:var(--primary);font-weight:500;text-decoration:none}.login-link a:hover{text-decoration:underline}.form-group{flex-direction:column;flex:1;gap:4px;margin-bottom:16px;display:flex}.form-group label{color:var(--text);font-size:13px;font-weight:500}.form-group input,.form-group select,.form-group textarea{border:1px solid var(--border);border-radius:var(--radius);font-size:14px;font-family:var(--font);color:var(--text);background:var(--white);padding:8px 12px;transition:border-color .15s}input[type=date]{cursor:pointer;position:relative}input[type=date]::-webkit-calendar-picker-indicator{opacity:0;cursor:pointer;width:100%;height:100%;position:absolute;inset:0}.form-group input:focus,.form-group select:focus,.form-group textarea:focus{border-color:var(--primary);outline:none;box-shadow:0 0 0 3px #4a90d91a}.form-row{gap:16px;display:flex}.invoice-form{background:var(--white);border-radius:var(--radius);box-shadow:var(--shadow);padding:24px}.btn{border-radius:var(--radius);font-size:14px;font-weight:500;font-family:var(--font);cursor:pointer;border:none;justify-content:center;align-items:center;padding:8px 16px;text-decoration:none;transition:all .15s;display:inline-flex}.btn:disabled{opacity:.6;cursor:not-allowed}.btn-primary{background:var(--primary);color:var(--white)}.btn-primary:hover:not(:disabled){background:var(--primary-dark)}.btn-secondary{background:var(--white);color:var(--text);border:1px solid var(--border)}.btn-secondary:hover:not(:disabled){background:var(--primary-light);border-color:var(--primary);color:var(--primary)}.btn-danger{background:var(--danger);color:var(--white)}.btn-danger:hover:not(:disabled){background:#dc2626}.btn-sm{padding:6px 12px;font-size:13px}.btn-full{width:100%}.page-title{color:var(--text);margin-bottom:20px;font-size:22px;font-weight:600}.page-header{flex-wrap:wrap;justify-content:space-between;align-items:center;gap:12px;margin-bottom:20px;display:flex}.page-header .page-title{margin-bottom:0}.page-actions{align-items:center;gap:8px;display:flex}.dashboard-cards{grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:20px;display:grid}.dashboard-card{background:var(--white);border-radius:var(--radius);box-shadow:var(--shadow);border-top:4px solid #0000;padding:24px}.card-label{color:var(--text-light);margin-bottom:8px;font-size:14px}.card-count{color:var(--text);font-size:32px;font-weight:600}.card-total{margin-top:4px;font-size:18px;font-weight:500}.filter-bar{background:var(--white);border-radius:var(--radius);box-shadow:var(--shadow);flex-wrap:wrap;align-items:flex-end;gap:12px;margin-bottom:16px;padding:16px;display:flex}.filter-group{flex-direction:column;gap:4px;display:flex}.filter-group label{color:var(--text-light);font-size:12px;font-weight:500}.filter-group input,.filter-group select{border:1px solid var(--border);border-radius:var(--radius);font-size:13px;font-family:var(--font);color:var(--text);background:var(--white);padding:6px 10px}.filter-group input:focus,.filter-group select:focus{border-color:var(--primary);outline:none}.filter-actions{gap:6px;display:flex}.table-container{background:var(--white);border-radius:var(--radius);box-shadow:var(--shadow);overflow-x:auto}.table{border-collapse:collapse;width:100%}.table th{text-align:left;text-transform:uppercase;letter-spacing:.5px;color:var(--text-light);background:var(--primary-light);border-bottom:2px solid var(--border);padding:12px 16px;font-size:12px;font-weight:600}.table td{border-bottom:1px solid var(--border);padding:12px 16px;font-size:14px}.table tbody tr:hover{background:var(--primary-light)}.table tbody tr:last-child td{border-bottom:none}.table th.text-right,.table td.text-right,.text-right{text-align:right}.badge{color:var(--white);border-radius:12px;padding:3px 10px;font-size:12px;font-weight:500;display:inline-block}.table-actions{gap:6px;display:flex}.pagination{justify-content:center;align-items:center;gap:12px;margin-top:16px;display:flex}.pagination-info{color:var(--text-light);font-size:13px}.modal-overlay{z-index:100;background:#0006;justify-content:center;align-items:center;display:flex;position:fixed;inset:0}.modal{background:var(--white);box-shadow:var(--shadow-md);border-radius:12px;width:90%;max-width:420px;padding:28px}.modal p{color:var(--text);margin-bottom:20px;font-size:15px}.modal-actions{justify-content:flex-end;gap:8px;display:flex}.alert{border-radius:var(--radius);margin-bottom:16px;padding:10px 14px;font-size:14px}.alert-error{background:var(--danger-light);color:var(--danger);border:1px solid var(--danger)}.loading{text-align:center;color:var(--text-light);padding:40px;font-size:14px}.empty-message{text-align:center;color:var(--text-light);background:var(--white);border-radius:var(--radius);box-shadow:var(--shadow);padding:40px}.client-form-card{background:var(--white);border-radius:var(--radius);box-shadow:var(--shadow);margin-bottom:16px;padding:24px}.client-form-card h3{color:var(--text);margin-bottom:16px;font-size:16px;font-weight:600}.form-actions{gap:8px;margin-top:8px;display:flex}.landing{background:var(--white);min-height:100vh}.landing-container{max-width:1100px;margin:0 auto;padding:0 24px}.landing-header{border-bottom:1px solid var(--border);padding:16px 0}.landing-header .landing-container{justify-content:space-between;align-items:center;display:flex}.landing-logo{color:var(--primary);font-size:20px;font-weight:700}.landing-nav{align-items:center;gap:12px;display:flex}.landing-nav-link{color:var(--text);border-radius:var(--radius);padding:8px 16px;font-size:14px;font-weight:500;text-decoration:none;transition:all .15s}.landing-nav-link:hover{background:var(--primary-light);color:var(--primary)}.landing-hero{text-align:center;background:linear-gradient(180deg, var(--white) 0%, var(--primary-light) 100%);padding:80px 0 60px}.landing-title{color:var(--text);max-width:700px;margin-bottom:16px;margin-left:auto;margin-right:auto;font-size:40px;font-weight:700;line-height:1.2}.landing-description{color:var(--text-light);max-width:560px;margin:0 auto 32px;font-size:18px;line-height:1.6}.landing-cta{justify-content:center;gap:12px;display:flex}.btn-lg{padding:12px 28px;font-size:16px}.landing-features{padding:80px 0}.landing-section-title{color:var(--text);text-align:center;margin-bottom:48px;font-size:28px;font-weight:700}.features-grid{grid-template-columns:repeat(3,1fr);gap:24px;display:grid}.feature-card{border:1px solid var(--border);text-align:center;border-radius:12px;padding:32px 24px;transition:all .2s}.feature-card:hover{border-color:var(--primary);box-shadow:var(--shadow-md)}.feature-icon{margin-bottom:16px;font-size:32px}.feature-card h3{color:var(--text);margin-bottom:8px;font-size:18px;font-weight:600}.feature-card p{color:var(--text-light);font-size:14px;line-height:1.5}.landing-cta-section{text-align:center;background:var(--primary-light);padding:60px 0}.landing-cta-section h2{color:var(--text);margin-bottom:8px;font-size:28px;font-weight:700}.landing-cta-section p{color:var(--text-light);margin-bottom:24px;font-size:16px}.landing-footer{border-top:1px solid var(--border);text-align:center;padding:24px 0}.landing-footer p{color:var(--text-light);font-size:13px}@media (width<=768px){.sidebar{width:200px}.sidebar-collapsed .sidebar{transform:translate(-200px)}.main-content{max-width:calc(100% - 200px);margin-left:200px;padding:20px}.form-row,.filter-bar{flex-direction:column}.page-header{flex-direction:column;align-items:flex-start}.landing-title{font-size:28px}.landing-description{font-size:16px}.landing-hero{padding:48px 0 40px}.landing-cta{flex-direction:column;align-items:center}.features-grid{grid-template-columns:1fr}.landing-features{padding:48px 0}}