:root{--ink:#0c110d;--paper:#f7f5ed;--acid:#d8ff46;--olive:#70880d;--muted:#697169;--line:#dfe2da}*{box-sizing:border-box}html,body{background:var(--paper);color:var(--ink);margin:0;font-family:Inter,ui-sans-serif,system-ui,-apple-system,Segoe UI,sans-serif}.app{min-height:100vh}.topbar{background:var(--ink);color:#fff;justify-content:space-between;align-items:center;height:76px;padding:0 5vw;display:flex}.brand{letter-spacing:.08em;font-size:22px;font-weight:950}.brand span,.invoice-brand span{color:var(--acid);font-size:28px}.mode{color:#aeb5af;letter-spacing:.15em;font-size:10px;font-weight:800}.workspace{width:min(1440px,92vw);margin:auto;padding:55px 0 80px}.intro{grid-template-columns:1.2fr .8fr;align-items:end;gap:80px;margin-bottom:40px;display:grid}.eyebrow{color:var(--olive);letter-spacing:.16em;font-size:10px;font-weight:900}.intro h1{letter-spacing:-.055em;margin:12px 0 0;font-size:clamp(38px,5vw,68px);line-height:.98}.intro p{color:var(--muted);margin:0 0 7px;font-size:16px;line-height:1.65}.layout{grid-template-columns:minmax(620px,1.55fr) minmax(340px,.75fr);align-items:start;gap:22px;display:grid}.card{border:1px solid var(--line);background:#fff;border-radius:18px;box-shadow:0 18px 60px #0f15100d}.calculator{padding:28px}.section-title,.section-title>div{justify-content:space-between;align-items:center;gap:12px;display:flex}.section-title h2{margin:0;font-size:20px}.step{background:var(--ink);width:32px;height:32px;color:var(--acid);border-radius:9px;place-items:center;font-size:11px;font-weight:900;display:grid}.period-pill{color:var(--olive);background:#f1f4e7;border-radius:20px;padding:8px 10px;font-size:10px;font-weight:850}.lines-head,.line{grid-template-columns:minmax(200px,1.6fr) 125px 145px 105px 26px;align-items:center;gap:12px;display:grid}.lines-head{text-transform:uppercase;letter-spacing:.08em;color:#8a918a;margin:30px 0 8px;padding:0 8px;font-size:9px;font-weight:850}.line{border-top:1px solid #eceee9;padding:10px 8px}.line input,.form-card input{border:1px solid var(--line);width:100%;color:var(--ink);font:inherit;background:#fbfcf9;border-radius:9px;padding:11px 12px}.line>input{background:0 0;border-color:#0000;padding-left:2px;font-weight:700}.money-input{position:relative}.money-input input{padding-right:28px}.money-input b{position:absolute;top:10px;right:11px}.quantity{border:1px solid var(--line);border-radius:9px;grid-template-columns:36px 1fr 36px;display:grid;overflow:hidden}.quantity button{cursor:pointer;background:#f2f4ef;border:0;font-size:18px}.quantity input{text-align:center;-moz-appearance:textfield;border:0;border-radius:0;padding:10px 2px;font-weight:850}.quantity input::-webkit-inner-spin-button{display:none}.line>strong{text-align:right}.remove{color:#a2a8a2;cursor:pointer;background:0 0;border:0;font-size:20px}.add{color:var(--olive);cursor:pointer;background:0 0;border:0;padding:16px 7px;font-weight:850}.total-strip{background:var(--ink);color:#fff;border-radius:13px;justify-content:space-between;align-items:center;margin-top:14px;padding:21px 23px;display:flex}.total-strip>div:first-child span{font-size:28px;font-weight:950}.total-strip small{color:#9fa7a0;text-transform:uppercase;letter-spacing:.1em;font-size:10px;display:block}.total-due{text-align:right}.total-due strong{color:var(--acid);font-size:32px;display:block}.side-stack{gap:16px;display:grid}.form-card{padding:22px}.form-card .section-title{margin-bottom:20px}.form-card label{text-transform:uppercase;letter-spacing:.06em;color:#687068;gap:6px;margin-top:12px;font-size:10px;font-weight:850;display:grid}.form-card input{text-transform:none;letter-spacing:0;font-size:13px}.two{grid-template-columns:1fr 1fr;gap:10px;display:grid}.compact details{border-top:1px solid var(--line);margin-top:15px;padding-top:13px}.compact summary{cursor:pointer;font-size:12px;font-weight:850}.primary{background:var(--acid);color:var(--ink);cursor:pointer;border:0;border-radius:12px;padding:17px 20px;font-size:14px;font-weight:950}.primary:hover{background:#c9f22c}.primary:disabled{color:#929991;cursor:not-allowed;background:#e1e4dc}.hint{text-align:center;color:#8a918a}.invoice-screen{width:min(1100px,94vw);margin:0 auto;padding:28px 0 70px}.invoice-actions{justify-content:space-between;margin-bottom:20px;display:flex}.back{cursor:pointer;background:0 0;border:0;font-weight:850}.invoice-sheet{background:#fff;min-height:1120px;padding:64px 70px;position:relative;overflow:hidden;box-shadow:0 20px 80px #0f15101a}.draft{color:#9d4639;text-align:center;letter-spacing:.12em;background:#f6e9e6;width:270px;padding:7px;font-size:10px;font-weight:900;position:absolute;top:42px;right:-58px;transform:rotate(38deg)}.invoice-header{border-bottom:3px solid var(--ink);justify-content:space-between;padding-bottom:25px;display:flex}.invoice-brand{flex-wrap:wrap;align-items:center;gap:8px;display:flex}.invoice-brand b{letter-spacing:.08em;font-size:25px}.invoice-brand small{letter-spacing:.14em;color:var(--muted);flex-basis:100%;font-size:9px}.invoice-header>div:last-child{text-align:right;display:grid}.invoice-header>div:last-child>span{letter-spacing:.14em;color:var(--olive);font-size:10px;font-weight:900}.invoice-header>div:last-child strong{margin:4px 0;font-size:24px}.invoice-header small{color:var(--muted)}.parties{grid-template-columns:1fr 1fr;gap:80px;margin:48px 0;display:grid}.parties>div:last-child{background:#f5f7ed;padding:20px}.parties span,.invoice-period span,.payment span{color:var(--olive);letter-spacing:.13em;margin-bottom:10px;font-size:9px;font-weight:900;display:block}.parties strong{font-size:17px}.parties p{color:var(--muted);margin:5px 0;font-size:12px}.invoice-period{border:1px solid var(--line);justify-content:space-between;align-items:center;margin-bottom:22px;padding:14px 18px;display:flex}.invoice-period span{margin:0}.invoice-table{border-collapse:collapse;width:100%}.invoice-table th{background:var(--ink);color:#fff;text-align:right;padding:13px;font-size:10px}.invoice-table th:first-child,.invoice-table td:first-child{text-align:left}.invoice-table td{text-align:right;border-bottom:1px solid var(--line);padding:16px 13px;font-size:12px}.invoice-total{justify-content:flex-end;align-items:center;gap:60px;margin-top:28px;display:flex}.invoice-total>div{text-align:right;display:grid}.invoice-total span{color:var(--muted);font-size:10px;font-weight:850}.invoice-total strong{font-size:20px}.grand-total{background:var(--acid);min-width:220px;padding:16px 20px}.grand-total strong{font-size:30px}.payment{background:#f7f7f4;grid-template-columns:1fr 1fr;gap:40px;margin-top:50px;padding:23px;display:grid}.payment p{margin:5px 0;font-size:11px}.invoice-sheet footer{border-top:1px solid var(--line);color:var(--muted);justify-content:space-between;gap:30px;padding-top:15px;font-size:9px;display:flex;position:absolute;bottom:42px;left:70px;right:70px}.invoice-sheet footer p{max-width:600px;margin:0}.invoice-sheet footer div{white-space:nowrap;font-weight:900}@media (width<=1000px){.layout{grid-template-columns:1fr}.intro{grid-template-columns:1fr;gap:20px}.side-stack{grid-template-columns:1fr 1fr}.side-stack>.primary,.side-stack>.hint{grid-column:1/-1}}@media (width<=700px){.topbar{padding:0 18px}.mode{display:none}.workspace{width:94vw;padding-top:34px}.intro h1{font-size:43px}.calculator{padding:16px}.lines-head{display:none}.line{grid-template-columns:1fr 1fr;gap:8px;padding:14px 0;position:relative}.line>input{grid-column:1/-1}.line>strong{text-align:left}.remove{position:absolute;top:13px;right:5px}.side-stack,.two{grid-template-columns:1fr}.invoice-sheet{min-height:1050px;padding:35px 25px}.parties{gap:20px}.invoice-sheet footer{left:25px;right:25px}.invoice-actions{gap:12px}.invoice-actions button{flex:1}.payment{grid-template-columns:1fr}.invoice-total{gap:15px}}@media print{body{background:#fff}.no-print{display:none!important}.invoice-screen{width:auto;margin:0;padding:0}.invoice-sheet{box-shadow:none;min-height:100vh;padding:35px 45px}.invoice-sheet footer{bottom:25px;left:45px;right:45px}@page{size:A4;margin:0}}