:root{--color-bg: #f8fafc;--color-bg-elevated: #ffffff;--color-surface: #ffffff;--color-border: #e2e8f0;--color-border-strong: #cbd5e1;--color-text: #0f172a;--color-text-muted: #64748b;--color-text-subtle: #94a3b8;--color-primary: #0ea5e9;--color-primary-hover: #0284c7;--color-primary-light: #e0f2fe;--color-success: #10b981;--color-success-light: #d1fae5;--color-warning: #f59e0b;--color-warning-light: #fef3c7;--color-error: #ef4444;--color-error-light: #fee2e2;--font-sans: "DM Sans", -apple-system, BlinkMacSystemFont, sans-serif;--space-1: .25rem;--space-2: .5rem;--space-3: .75rem;--space-4: 1rem;--space-5: 1.25rem;--space-6: 1.5rem;--space-8: 2rem;--space-10: 2.5rem;--space-12: 3rem;--radius-sm: 6px;--radius-md: 10px;--radius-lg: 14px;--radius-full: 9999px;--shadow-sm: 0 1px 2px rgba(0, 0, 0, .05);--shadow-md: 0 4px 6px -1px rgba(0, 0, 0, .07);--shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, .08);--header-height: 64px;--sidebar-width: 280px;--content-max: 900px;--ad-banner-height: 90px}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;font-family:var(--font-sans);font-size:16px;line-height:1.6;color:var(--color-text);background:var(--color-bg);-webkit-font-smoothing:antialiased}button,input,select,textarea,a.btn{font-family:inherit;font-size:1rem}.ad-zone{min-height:90px;background:linear-gradient(135deg,#f1f5f9,#e2e8f0);border:2px dashed var(--color-border-strong);border-radius:var(--radius-md);display:flex;align-items:center;justify-content:center;color:var(--color-text-muted);font-size:.875rem}.ad-zone-banner{height:var(--ad-banner-height)}.ad-zone-sidebar{min-height:250px}.layout{min-height:100vh;display:flex;flex-direction:column}.layout-body{display:flex;flex:1;gap:var(--space-6);padding:var(--space-6);max-width:1400px;margin:0 auto;width:100%}.layout-sidebar{width:var(--sidebar-width);flex-shrink:0;display:flex;flex-direction:column;gap:var(--space-4)}.layout-main{flex:1;min-width:0;max-width:var(--content-max)}.header{background:var(--color-surface);border-bottom:1px solid var(--color-border);padding:var(--space-4) var(--space-6)}.header-inner{max-width:1400px;margin:0 auto}.header-logo{font-size:1.25rem;font-weight:700;color:var(--color-text);text-decoration:none}.header-tagline{margin:var(--space-1) 0 0;font-size:.875rem;color:var(--color-text-muted)}.footer{background:var(--color-surface);border-top:1px solid var(--color-border);padding:var(--space-6);margin-top:auto}.footer-inner{max-width:1400px;margin:0 auto;display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:var(--space-4)}.footer-copy{font-size:.875rem;color:var(--color-text-muted);margin:0}.footer-link{font-size:.875rem;color:var(--color-primary);text-decoration:none}.footer-link:hover{text-decoration:underline}.nav-sidebar{background:var(--color-surface);border-radius:var(--radius-lg);padding:var(--space-4);box-shadow:var(--shadow-md)}.nav-title{font-size:.75rem;font-weight:600;text-transform:uppercase;letter-spacing:.05em;color:var(--color-text-muted);margin:0 0 var(--space-3);padding:0 var(--space-2)}.nav-list{list-style:none;margin:0;padding:0}.nav-link{display:flex;align-items:center;gap:var(--space-2);padding:var(--space-2) var(--space-3);border-radius:var(--radius-sm);color:var(--color-text);text-decoration:none;font-size:.9375rem;transition:background .15s}.nav-link:hover{background:var(--color-primary-light);color:var(--color-primary-hover)}.nav-link--active{background:var(--color-primary-light);color:var(--color-primary-hover);font-weight:500}.nav-icon{font-size:1.125rem}.data-disclaimer{font-size:.8125rem;color:var(--color-text-muted);background:var(--color-warning-light);padding:var(--space-2) var(--space-4);border-radius:var(--radius-sm);margin:0 0 var(--space-4)}.page{padding-bottom:var(--space-12)}.page-content{background:var(--color-surface);border-radius:var(--radius-lg);padding:var(--space-8);box-shadow:var(--shadow-md)}.page-title{font-size:1.75rem;font-weight:700;margin:0 0 var(--space-2)}.page-subtitle{font-size:1rem;color:var(--color-text-muted);margin:0 0 var(--space-8)}.page--home .page-content{padding-top:var(--space-6)}.tool-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:var(--space-4)}.tool-card{display:block;padding:var(--space-5);background:var(--color-bg);border-radius:var(--radius-md);border:1px solid var(--color-border);text-decoration:none;color:inherit;transition:border-color .15s,box-shadow .15s}.tool-card:hover{border-color:var(--color-primary);box-shadow:var(--shadow-md)}.tool-card-icon{font-size:2rem;display:block;margin-bottom:var(--space-3)}.tool-card-title{font-size:1rem;font-weight:600;margin:0 0 var(--space-1)}.tool-card-desc{font-size:.875rem;color:var(--color-text-muted);margin:0}.tool-page{background:var(--color-surface);border-radius:var(--radius-lg);padding:var(--space-8);box-shadow:var(--shadow-md)}.tool-page h1{font-size:1.5rem;font-weight:700;margin:0 0 var(--space-6)}.form-section{margin-bottom:var(--space-8)}.form-section-title{font-size:1rem;font-weight:600;margin:0 0 var(--space-4);padding-bottom:var(--space-2);border-bottom:1px solid var(--color-border)}.form-row{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:var(--space-4);margin-bottom:var(--space-4)}.input-group{margin-bottom:var(--space-4)}.input-label{display:block;font-size:.875rem;font-weight:500;margin-bottom:var(--space-1);color:var(--color-text)}.input{width:100%;padding:var(--space-3) var(--space-4);font-size:1rem;border:1px solid var(--color-border);border-radius:var(--radius-sm);background:var(--color-surface);min-height:48px}.input:focus{outline:none;border-color:var(--color-primary);box-shadow:0 0 0 3px var(--color-primary-light)}.input--error{border-color:var(--color-error)}.input-error{font-size:.8125rem;color:var(--color-error);margin-top:var(--space-1);display:block}.btn{display:inline-flex;align-items:center;justify-content:center;gap:var(--space-2);padding:var(--space-3) var(--space-5);font-size:1rem;font-weight:500;border:none;border-radius:var(--radius-sm);cursor:pointer;transition:background .15s,transform .1s;min-height:48px}.btn:active{transform:scale(.98)}.btn:disabled{opacity:.6;cursor:not-allowed}.btn--primary{background:var(--color-primary);color:#fff}.btn--primary:hover:not(:disabled){background:var(--color-primary-hover)}.btn--secondary{background:var(--color-border);color:var(--color-text)}.btn--secondary:hover:not(:disabled){background:var(--color-border-strong)}.btn--success{background:var(--color-success);color:#fff}.btn--success:hover:not(:disabled){filter:brightness(1.05)}.btn--sm{padding:var(--space-2) var(--space-3);font-size:.875rem;min-height:36px}.btn--lg{padding:var(--space-4) var(--space-6);font-size:1.0625rem}.btn-group{display:flex;gap:var(--space-3);flex-wrap:wrap}.table-wrap{overflow-x:auto}.table{width:100%;border-collapse:collapse}.table th,.table td{padding:var(--space-3) var(--space-4);text-align:left;border-bottom:1px solid var(--color-border)}.table th{font-weight:600;font-size:.875rem;color:var(--color-text-muted)}.table tbody tr:hover{background:var(--color-bg)}@media(max-width:768px){.layout-body{flex-direction:column;padding:var(--space-4)}.layout-sidebar{width:100%;flex-direction:row;flex-wrap:wrap}.nav-sidebar{flex:1;min-width:200px}.ad-zone-sidebar{min-height:90px}}.invoice-print{display:none}.invoice-print-inner{max-width:800px;margin:0 auto;font-size:12px}.invoice-print-header{display:flex;justify-content:space-between;align-items:flex-start;margin-bottom:24px}.invoice-print-brand{display:flex;align-items:center;gap:12px}.invoice-print-logo{width:48px;height:48px;background:#2d3748;color:#fff;display:flex;align-items:center;justify-content:center;font-weight:700;font-size:18px}.invoice-print-tagline{font-size:10px;color:#64748b;margin-top:2px}.invoice-print-title{background:#2d3748;color:#fff;padding:8px 24px;font-weight:700;font-size:16px;letter-spacing:.05em;border-radius:0 8px 8px 0}.invoice-print-meta{display:flex;justify-content:space-between;margin-bottom:24px}.invoice-print-meta-right{text-align:right}.invoice-print-meta-right div{margin-bottom:4px}.invoice-print-table{width:100%;border-collapse:collapse;margin-bottom:24px}.invoice-print-table th{background:#2d3748;color:#fff;padding:10px 8px;font-size:10px;font-weight:600;letter-spacing:.05em;text-align:left}.invoice-print-table th:nth-child(1){width:5%}.invoice-print-table th:nth-child(2){width:50%}.invoice-print-table th:nth-child(3),.invoice-print-table th:nth-child(4),.invoice-print-table th:nth-child(5){width:15%;text-align:center}.invoice-print-table td{padding:8px;border-bottom:1px solid #e2e8f0}.invoice-print-table td:nth-child(1){text-align:center}.invoice-print-table td:nth-child(3),.invoice-print-table td:nth-child(4){text-align:center}.invoice-print-table td:nth-child(5){text-align:right}.invoice-print-totals{max-width:280px;margin-left:auto;margin-bottom:32px}.invoice-print-total-row{display:flex;align-items:stretch;margin-bottom:2px}.invoice-print-total-row span:first-child{background:#2d3748;color:#fff;padding:8px 16px;min-width:120px}.invoice-print-total-row span:last-child{flex:1;border:1px solid #e2e8f0;padding:8px 16px;text-align:right}.invoice-print-total-final span:first-child{padding:10px 16px;font-weight:700;font-size:14px}.invoice-print-footer{display:flex;justify-content:space-between;align-items:flex-start;padding-top:24px;border-top:1px solid #e2e8f0}.invoice-print-footer strong{display:block;margin-bottom:8px}.invoice-print-sign{text-align:center}.invoice-print-sign-line{width:150px;border-top:1px solid #0f172a;margin-bottom:4px}@media print{.header,.footer,.layout-sidebar,.data-disclaimer,.ad-zone,.btn-group,button{display:none!important}.layout-body{padding:0}.layout-main{max-width:none}.tool-page h1,.tool-page .form-section,.tool-page .btn-group{display:none!important}.invoice-print{display:block!important;padding:20px}}.visually-hidden{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}