:root{--bg:#f2f5f5;--surface:#fff;--ink:#12242b;--muted:#5b6f76;--line:#dce4e4;--line-strong:#c3cfcf;--brand:#0b6b6b;--brand-ink:#084f50;--brand-soft:#e2f0ef;--bar:#10272e;--accent:#f2b544;--accent-ink:#3a2a00;--green:#0d7347;--green-soft:#e0f4e9;--red:#b3372b;--red-soft:#fdecea;--amber:#8a5200;--amber-soft:#fff0cf;--radius:10px}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--ink);font:15px/1.5 Inter,"Segoe UI",system-ui,-apple-system,sans-serif;font-feature-settings:"tnum","cv11"}
h1{font-size:26px;line-height:1.2;margin:0;font-weight:700;letter-spacing:-.01em}
h2{font-size:16px;margin:0 0 16px;font-weight:650}
a{color:var(--brand)}
.muted{color:var(--muted)}.center{text-align:center}.num{text-align:right;white-space:nowrap}
[hidden]{display:none!important}
:focus-visible{outline:3px solid #7fc4c1;outline-offset:2px}

/* Горна лента */
.top{background:var(--bar);color:#fff;position:sticky;top:0;z-index:5}
.top-in{max-width:1160px;margin:0 auto;padding:0 20px;min-height:60px;display:flex;align-items:center;gap:28px}
.brand{color:#fff;text-decoration:none;font-weight:700;font-size:17px;white-space:nowrap}
.brand span,.auth-mark span{font-weight:500;color:var(--accent);margin-left:7px}
.top nav{display:flex;gap:4px;align-self:stretch;flex:1}
.top nav a{color:#b9c9cc;text-decoration:none;padding:0 12px;display:flex;align-items:center;border-bottom:3px solid transparent;border-top:3px solid transparent;font-weight:500}
.top nav a:hover{color:#fff}
.top nav a[aria-current]{color:#fff;border-bottom-color:var(--accent)}
.top-actions{display:flex;align-items:center;gap:16px}
.linklike{background:none;border:0;padding:6px 2px;color:#b9c9cc;font:inherit;cursor:pointer}
.linklike:hover{color:#fff}

main{max-width:1160px;margin:0 auto;padding:28px 20px 40px;min-height:calc(100vh - 130px)}
.foot{text-align:center;color:var(--muted);font-size:12px;padding:18px}
.page-head{display:flex;justify-content:space-between;align-items:flex-end;gap:16px;margin-bottom:20px;flex-wrap:wrap}
.page-head h1 .badge{vertical-align:middle;margin-left:6px}
.page-head p{margin:6px 0 0}
.back{display:inline-block;font-size:13px;color:var(--muted);text-decoration:none;margin-bottom:4px}
.back::before{content:"‹ "}
.back:hover{color:var(--brand)}

.card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:22px;margin-bottom:16px}
.card.flush{padding:0;overflow:hidden}
.empty{text-align:center;padding:52px 20px}
.empty h1,.empty h2{font-size:18px;margin-bottom:6px}
.empty p{color:var(--muted);margin:0 0 14px}

/* Бутони */
.button{display:inline-flex;justify-content:center;align-items:center;gap:6px;min-height:40px;padding:8px 16px;border:1px solid var(--brand);border-radius:8px;background:var(--brand);color:#fff;text-decoration:none;font:inherit;font-weight:600;cursor:pointer;white-space:nowrap}
.button:hover{background:var(--brand-ink);border-color:var(--brand-ink)}
.button.accent{background:var(--accent);border-color:var(--accent);color:var(--accent-ink)}
.button.accent:hover{background:#e6a52f;border-color:#e6a52f}
.button.ghost{background:var(--surface);border-color:var(--line-strong);color:var(--ink)}
.button.ghost:hover{border-color:var(--brand);color:var(--brand)}
.button.small{min-height:34px;padding:5px 12px;font-size:14px}
.button.block{display:flex;width:100%}
.actions{display:flex;gap:8px;align-items:center;flex-wrap:wrap}
.actions form{margin:0}

/* Полета */
.field{display:block;margin:0 0 14px;border:0;padding:0;min-width:0}
.field>span,.field>legend{display:block;font-size:13px;font-weight:600;color:#33484f;margin-bottom:5px;padding:0}
.field small,.hint{display:block;font-size:12.5px;line-height:1.4;color:var(--muted);margin-top:5px}
.hint.warn{color:var(--amber);background:var(--amber-soft);padding:8px 12px;border-radius:8px;margin:0}
input,select,textarea{display:block;width:100%;border:1px solid var(--line-strong);border-radius:8px;background:#fff;padding:9px 11px;color:var(--ink);font:inherit;min-height:42px}
input[type=search]{-webkit-appearance:none;appearance:none}
input:not([type=checkbox]):not([type=radio]),select{height:42px}
textarea{resize:vertical;min-height:80px}
input:focus,select:focus,textarea:focus{outline:3px solid #b8dedb;outline-offset:0;border-color:var(--brand)}
input::placeholder{color:#93a3a8}
.static{min-height:42px;display:flex;align-items:center;padding:9px 0;font-weight:600}
.static.num{justify-content:flex-end}
.check{display:flex;align-items:center;gap:9px;margin:2px 0 0;cursor:pointer}
.check input{width:18px;height:18px;min-height:0;accent-color:var(--brand);flex:none}
.grid2,.grid3{display:grid;gap:0 16px}
.grid2{grid-template-columns:repeat(2,minmax(0,1fr))}
.grid3{grid-template-columns:repeat(3,minmax(0,1fr))}
.seg-in{display:grid;grid-template-columns:1fr 1fr;border:1px solid var(--line-strong);border-radius:8px;overflow:hidden;background:#fff}
.seg label{position:relative;cursor:pointer}
.seg input{position:absolute;opacity:0;inset:0;min-height:0;cursor:pointer}
.seg span{display:flex;align-items:center;justify-content:center;min-height:40px;font-weight:600;color:var(--muted)}
.seg input:checked+span{background:var(--brand);color:#fff}
.seg input:focus-visible+span{outline:3px solid #7fc4c1;outline-offset:-3px}

.alert{padding:11px 15px;border-radius:8px;margin-bottom:16px;border:1px solid #b9dfcb;background:var(--green-soft);color:#0a5435;font-weight:500}
.alert.error{border-color:#f3c4be;background:var(--red-soft);color:#8f2a20}

.badge{display:inline-block;font-size:12px;font-weight:600;border-radius:99px;padding:2px 10px;background:#e9eeee;color:#3d5158;white-space:nowrap;letter-spacing:0}
.badge.proforma{background:var(--amber-soft);color:var(--amber)}
.badge.paid{background:var(--green-soft);color:var(--green)}
.badge.unpaid{background:var(--red-soft);color:var(--red)}
.badge.partial{background:var(--amber-soft);color:var(--amber)}
.badge.cancelled{background:#e9eeee;color:#5b6f76;text-decoration:line-through}

/* Вход */
.auth-wrap{max-width:420px;padding-top:9vh}
.auth-mark{font-weight:700;font-size:17px;margin-bottom:22px}
.auth-mark span{color:var(--brand)}
.auth h1{margin-bottom:18px;font-size:24px}
.auth .button{margin-top:6px}

/* Списък */
.stats{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));margin:0 0 16px;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius)}
.stats div{padding:16px 22px;border-left:1px solid var(--line)}
.stats div:first-child{border-left:0}
.stats dt{font-size:13px;color:var(--muted)}
.stats dd{margin:2px 0 0;font-size:24px;font-weight:700;letter-spacing:-.01em}
.stats .due dd{color:var(--red)}
.filters{display:grid;grid-template-columns:minmax(200px,2fr) repeat(3,minmax(130px,1fr)) auto;gap:0 12px;align-items:end;margin-bottom:16px}
.filter-actions{display:flex;gap:8px;margin-bottom:14px}
table{width:100%;border-collapse:collapse}
.list th,.list td{text-align:left;padding:13px 22px;border-bottom:1px solid var(--line);vertical-align:middle}
.list th{font-size:13px;color:var(--muted);font-weight:600;background:#f8fafa;padding-top:10px;padding-bottom:10px}
.list th.num,.list td.num{text-align:right}
.list tbody tr:last-child td{border-bottom:0}
.list tbody tr{position:relative}
.list tbody tr:hover{background:#f6faf9}
.list .c-no a{font-weight:600;color:var(--ink);text-decoration:none}
.list .c-no a::after{content:"";position:absolute;inset:0}
.list .c-no a:focus-visible::after{outline:3px solid #7fc4c1;outline-offset:-3px}
.list .c-no .badge{margin-left:6px}
.list .c-date{color:var(--muted);white-space:nowrap}
.list .c-client .client{display:block;font-weight:500}
.list .c-client .muted{font-size:13px}
.list .c-total{font-weight:700}
.is-cancelled .c-total,.is-cancelled .client{text-decoration:line-through;color:var(--muted)}

/* Редактор */
.editor{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:20px;align-items:start}
.editor-side{position:sticky;top:80px}
.summary{background:var(--bar);color:#fff;border-radius:var(--radius);padding:22px}
.summary-rows div,.summary-total{display:flex;justify-content:space-between;gap:12px}
.summary-rows{color:#b9c9cc;font-size:14px;display:grid;gap:6px}
.summary-total{align-items:baseline;border-top:1px solid #2c444b;margin:14px 0 18px;padding-top:14px}
.summary-total output{font-size:28px;font-weight:700;letter-spacing:-.02em;color:var(--accent)}
.summary .button{margin-top:8px}
.summary .button.ghost{background:transparent;border-color:#3d575e;color:#dbe6e8}
.summary .button.ghost:hover{border-color:#fff;color:#fff}
.summary .hint{color:#9fb3b7;margin-top:14px}
.item-row{display:grid;grid-template-columns:minmax(0,1fr) 92px 124px 112px 40px;gap:0 10px;align-items:end;border-bottom:1px solid var(--line);margin-bottom:14px}
.item-row:not(:first-child) .field>span{position:absolute;width:1px;height:1px;overflow:hidden;clip-path:inset(50%)}
.item-row input[type=number]{text-align:right}
.remove{height:42px;margin-bottom:14px;border:1px solid var(--line-strong);color:var(--muted);background:#fff;border-radius:8px;cursor:pointer;font-size:20px;line-height:1}
.remove:hover:not(:disabled){border-color:var(--red);color:var(--red)}
.remove:disabled{opacity:.35;cursor:default}

/* Преглед на документ */
.doc-toolbar{max-width:860px;margin:0 auto 16px}
.doc-toolbar .page-head{margin-bottom:14px}
.more{position:relative}
.more summary{list-style:none}
.more summary::-webkit-details-marker{display:none}
.more summary::after{content:"▾";font-size:12px}
.menu{position:absolute;right:0;top:46px;z-index:4;min-width:250px;background:#fff;border:1px solid var(--line-strong);border-radius:var(--radius);padding:6px;box-shadow:0 10px 30px #10272e26}
.menu a,.menu .menu-item{display:block;width:100%;min-height:0;text-align:left;justify-content:flex-start;padding:9px 12px;border:0;border-radius:6px;background:none;color:var(--ink);font:inherit;font-weight:500;text-decoration:none;cursor:pointer;white-space:normal}
.menu a:hover,.menu .menu-item:hover{background:var(--brand-soft);color:var(--brand-ink)}
.menu .danger{color:var(--red)}
.menu .danger:hover{background:var(--red-soft);color:var(--red)}
.document{position:relative;max-width:860px;margin:0 auto;background:#fff;padding:52px 56px;border:1px solid var(--line);border-radius:4px;overflow:hidden}
.doc-head{display:flex;justify-content:space-between;gap:30px;border-bottom:2px solid var(--ink);padding-bottom:20px}
.doc-head h1{font-size:30px;letter-spacing:.04em;margin:0 0 4px}
.docno{font-size:24px;font-weight:700;text-align:right}
.docmeta{color:var(--muted);font-size:13px;text-align:right}
.parties{margin:24px 0}
.parties td{width:50%;vertical-align:top;padding:0 18px 0 0}
.parties h3{margin:0 0 8px;font-size:13px;color:var(--muted);font-weight:600}
.parties p{margin:3px 0;overflow-wrap:anywhere}
.lines{margin:10px 0 18px}
.lines th,.lines td{text-align:left;padding:11px 10px;border-bottom:1px solid var(--line);vertical-align:top}
.lines th{font-size:13px;color:var(--muted);font-weight:600;background:#f3f6f6}
.lines th.num,.lines td.num{text-align:right}
.doc-sum{margin-left:auto;width:min(340px,100%)}
.doc-sum td{padding:6px 10px}
.doc-sum .grand td{font-size:19px;font-weight:700;border-top:2px solid var(--ink);padding-top:12px}
.reason{margin:18px 0;padding:12px 14px;background:#f3f6f6;border-left:3px solid var(--brand);font-size:13px}
.payment{margin-top:24px;padding-top:16px;border-top:1px solid var(--line)}
.doc-foot{margin-top:28px;border-top:1px solid var(--line);padding-top:13px;color:var(--muted);font-size:12px}
.watermark{position:absolute;top:42%;left:50%;transform:translate(-50%,-50%) rotate(-25deg);font-size:76px;font-weight:800;letter-spacing:.08em;color:#b3372b26;pointer-events:none;white-space:nowrap}

@media(max-width:960px){
  .editor{grid-template-columns:1fr}
  .editor-side{position:sticky;bottom:0;top:auto;margin:0 -20px -40px;z-index:4}
  .summary{border-radius:0;padding:12px 20px;display:grid;grid-template-columns:1fr auto;gap:0 14px;align-items:center}
  .summary-rows,.summary .hint,.summary .button.ghost{display:none}
  .summary-total{border:0;margin:0;padding:0;flex-direction:column;gap:0}
  .summary-total span{font-size:12px;color:#b9c9cc}
  .summary-total output{font-size:22px}
  .summary .button{margin:0;width:auto}
  .filters{grid-template-columns:repeat(3,minmax(0,1fr))}
  .filters .f-q{grid-column:1/-1}
  .filter-actions{grid-column:1/-1}
}
@media(max-width:720px){
  h1{font-size:22px}
  main{padding:20px 14px 40px}
  .top-in{flex-wrap:wrap;gap:0 12px;padding:0 14px}
  .top nav{order:3;flex-basis:100%;margin:0 -6px;min-height:42px}
  .top nav a{padding:0 10px}
  .top-actions{margin-left:auto;min-height:54px}
  .top-actions .button{min-height:36px;padding:6px 12px}
  .card{padding:16px}
  .grid2,.grid3{grid-template-columns:1fr}
  .stats dd{font-size:18px}.stats div{padding:12px 14px}
  .filters{grid-template-columns:1fr 1fr}
  .filters .field:nth-of-type(4){grid-column:1/-1}
  .filter-actions .button{flex:1}
  .list thead{position:absolute;width:1px;height:1px;overflow:hidden;clip-path:inset(50%)}
  .list tbody tr{display:grid;grid-template-columns:1fr auto;gap:2px 12px;padding:13px 16px;border-bottom:1px solid var(--line)}
  .list tbody tr:last-child{border-bottom:0}
  .list td{padding:0;border:0}
  .list .c-client{grid-column:1;grid-row:1}
  .list .c-total{grid-column:2;grid-row:1}
  .list .c-no{grid-column:1;grid-row:2;font-size:13px}
  .list .c-no a{font-weight:500;color:var(--muted)}
  .list .c-status{grid-column:2;grid-row:2;text-align:right}
  .list .c-date{grid-column:1/-1;grid-row:3;font-size:13px}
  .item-row{grid-template-columns:1fr 1fr 1fr 40px;padding-bottom:0}
  .item-row .i-desc{grid-column:1/-1}
  .item-row:not(:first-child) .field>span{position:static;width:auto;height:auto;clip-path:none}
  .editor-side{margin:0 -14px -40px}
  .doc-toolbar .actions{display:grid;grid-template-columns:1fr 1fr}
  .doc-toolbar .actions .button{width:100%}
  .doc-toolbar .actions>.accent{grid-column:1/-1}
  .document{padding:26px 18px}
  .doc-head{display:block}
  .doc-head h1{font-size:24px}
  .docno,.docmeta{text-align:left}.docno{margin-top:12px;font-size:20px}
  .parties,.parties tbody,.parties tr,.parties td{display:block;width:100%}
  .parties td{padding:0 0 16px}
  .lines th,.lines td{padding:9px 6px;font-size:14px}
  .lines th:first-child,.lines td:first-child{display:none}
  .watermark{font-size:40px}
}
@media(max-width:420px){
  .stats{grid-template-columns:1fr 1fr}
  .stats div:first-child{grid-column:1/-1;border-bottom:1px solid var(--line)}
  .stats div:nth-child(2){border-left:0}
  .item-row{grid-template-columns:1fr 1fr 40px}
  .item-row .i-sum{grid-column:1/3;display:flex;justify-content:space-between;align-items:center;margin-bottom:8px}
  .item-row .i-sum .static{min-height:0;padding:0}
  .item-row .remove{grid-column:3;grid-row:2}
}
@media print{
  body{background:#fff}
  .top,.foot,.doc-toolbar,.alert{display:none!important}
  main{max-width:none;margin:0;padding:0;min-height:0}
  .document{max-width:none;margin:0;padding:0;border:0}
  .lines th,.reason,.watermark{-webkit-print-color-adjust:exact;print-color-adjust:exact}
  @page{margin:16mm 15mm}
}
@media(prefers-reduced-motion:no-preference){.button,input,select,textarea{transition:border-color .12s,background-color .12s}}