/* TipSplit Calc: friendly consumer look. Warm page, rounded chunky cards, one accent per tool. System fonts only. */
:root{--bg:#fff8ee;--card:#fff;--ink:#2a2118;--muted:#5c5047;--line:#e7dccd;--brand:#17694a;--brand-d:#0f4d36;--sun:#ffc94d;--acc:#17694a;--acc-soft:#e3f3ea;--err:#b3261e;--r:18px;--focus:#1a56c4}
.accent-itemized{--acc:#2a5db0;--acc-soft:#e6eefb}
.accent-guide{--acc:#a2470f;--acc-soft:#fcebdc}
*,*::before,*::after{box-sizing:border-box}
html{font-size:100%;-webkit-text-size-adjust:100%}
@media (prefers-reduced-motion:no-preference){html{scroll-behavior:smooth}}
body{margin:0;background:var(--bg);color:var(--ink);font:1.125rem/1.55 system-ui,-apple-system,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;overflow-wrap:break-word}
a{color:var(--brand-d);text-underline-offset:2px}
a:hover{color:var(--ink)}
:focus-visible{outline:3px solid var(--focus);outline-offset:2px}
.wrap{max-width:60rem;margin:0 auto;padding:0 1rem}
.sr-only{position:absolute!important;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
.skip-link{position:absolute;left:-999px;top:0;background:#fff;padding:.6rem 1rem;z-index:10;border-radius:0 0 10px 0}
.skip-link:focus{left:0}
.ico{width:1.25em;height:1.25em;vertical-align:-.25em;flex:none}
.print-only{display:none}
/* header */
.site-header{background:#fff;border-bottom:1px solid var(--line)}
.header-inner{display:flex;align-items:center;gap:1rem;min-height:64px;flex-wrap:wrap}
.brand{display:inline-flex;align-items:center;gap:.6rem;text-decoration:none;color:var(--ink);font-weight:800;font-size:1.3rem;min-height:44px;margin-right:auto}
.brand-mark{flex:none}
.wm-c{color:var(--brand)}
.menu-toggle{display:none}
.nav-list{list-style:none;margin:0;padding:0;display:flex;gap:.25rem;flex-wrap:wrap}
.nav-list a{display:flex;align-items:center;min-height:44px;padding:.4rem .9rem;border-radius:999px;text-decoration:none;color:var(--ink);font-weight:600}
.nav-list a:hover{background:var(--acc-soft)}
.nav-list a[aria-current=page]{background:var(--brand);color:#fff}
@media (max-width:759px){
  .menu-toggle{display:inline-flex;align-items:center;gap:.5rem;min-height:44px;min-width:44px;padding:.4rem .9rem;border:2px solid var(--line);border-radius:999px;background:#fff;color:var(--ink);font:inherit;font-weight:700;cursor:pointer}
  .menu-bars,.menu-bars::before,.menu-bars::after{display:block;width:18px;height:2px;background:currentColor;border-radius:2px;position:relative}
  .menu-bars::before,.menu-bars::after{content:"";position:absolute;left:0}.menu-bars::before{top:-6px}.menu-bars::after{top:6px}
  .main-nav{display:none;width:100%;padding-bottom:.75rem}
  .menu-open .main-nav{display:block}
  .nav-list{flex-direction:column}
  .brand{font-size:1.15rem}
}
/* main */
main{padding:1rem 1rem 2.5rem}
main:focus{outline:none}
.crumbs ol{list-style:none;margin:0 0 .25rem;padding:0;display:flex;flex-wrap:wrap;font-size:.95rem;color:var(--muted)}
.crumbs a{display:inline-flex;align-items:center;min-height:44px;min-width:44px;color:var(--muted)}
.crumb-sep{margin:0 .4rem}
.crumbs li{display:flex;align-items:center}
h1{font-size:clamp(1.8rem,5vw,2.5rem);line-height:1.15;margin:.5rem 0 .4rem;letter-spacing:-.01em}
h2{font-size:1.45rem;line-height:1.25;margin:2rem 0 .6rem}
h3{font-size:1.2rem;margin:1.2rem 0 .4rem}
.lead{font-size:1.2rem;color:var(--muted);margin:0}
.intro-row{display:flex;flex-wrap:wrap;align-items:center;gap:.75rem 1.25rem;margin-bottom:1.1rem}
.intro-row .lead{flex:1 1 20rem}
/* buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:.5rem;min-height:48px;padding:.6rem 1.3rem;border:0;border-radius:999px;background:var(--acc);color:#fff;font:inherit;font-weight:700;text-decoration:none;cursor:pointer;text-align:center}
.btn:hover{filter:brightness(.92);color:#fff}
.btn.big{min-height:56px;font-size:1.2rem;padding:.7rem 1.8rem}
.btn.secondary{background:#fff;color:var(--ink);border:2px solid var(--acc)}
.btn.secondary:hover{background:var(--acc-soft);color:var(--ink);filter:none}
.btn-row{display:flex;flex-wrap:wrap;gap:.75rem;margin-top:1rem}
/* tool */
.panel{background:var(--card);border:2px solid var(--line);border-radius:var(--r);padding:1.1rem;box-shadow:0 4px 0 var(--line)}
.form-step{border:0;margin:0 0 1.1rem;padding:0 0 1.1rem;border-bottom:2px dashed var(--line);min-width:0}
.step-h{display:flex;align-items:center;gap:.6rem;font-weight:800;font-size:1.25rem;padding:0;margin-bottom:.6rem}
.step-badge{display:inline-block;background:var(--acc);color:#fff;border-radius:999px;padding:.15rem .75rem;font-size:.95rem;white-space:nowrap}
.fields{display:grid;grid-template-columns:repeat(auto-fit,minmax(14rem,1fr));gap:.9rem 1.2rem}
.field{min-width:0}
.field-label{display:block;font-weight:700;margin-bottom:.3rem}
.opt{font-weight:400;color:var(--muted)}
.val-row{display:flex;align-items:stretch;border:2px solid #b5a796;border-radius:12px;background:#fff;overflow:hidden}
.val-row:focus-within{border-color:var(--focus);box-shadow:0 0 0 2px var(--focus)}
.val-row input{flex:1;min-width:0;border:0;padding:.65rem .75rem;font:inherit;font-size:1.25rem;background:transparent;color:var(--ink)}
.val-row input:focus{outline:none}
.unit-prefix,.unit-suffix{display:flex;align-items:center;padding:0 .75rem;background:var(--acc-soft);color:var(--ink);font-weight:700}
input[aria-invalid=true]{background:#fdecea}
select{width:100%;min-height:52px;border:2px solid #b5a796;border-radius:12px;padding:.5rem .75rem;font:inherit;background:#fff;color:var(--ink)}
.hint{margin:.3rem 0 0;font-size:.95rem;color:var(--muted)}
.form-note{margin:-.2rem 0 .7rem;color:var(--muted);font-size:1rem}
.inner-fs{border:0;margin:0;padding:0;min-width:0}
.inner-fs legend{padding:0}
.seg{display:flex;flex-wrap:wrap;gap:.5rem}
.seg-opt{position:relative}
.seg-opt input{position:absolute;opacity:0;width:1px;height:1px}
.seg-opt span{display:flex;align-items:center;min-height:48px;padding:.4rem 1rem;border:2px solid #b5a796;border-radius:999px;background:#fff;cursor:pointer;font-weight:600}
.seg-opt input:checked+span{background:var(--acc);border-color:var(--acc);color:#fff}
.seg-opt input:focus-visible+span{outline:3px solid var(--focus);outline-offset:2px}
.presets{grid-column:1/-1;display:grid;grid-template-columns:repeat(5,minmax(0,6rem));gap:.5rem}
.preset{min-height:52px;min-width:0;padding:0;border:2px solid var(--acc);border-radius:14px;background:#fff;color:var(--ink);font:inherit;font-size:1.15rem;font-weight:800;cursor:pointer}
.preset[aria-pressed=true]{background:var(--acc);color:#fff}
.form-error{background:#fdecea;color:var(--err);border-radius:12px;padding:.7rem 1rem;font-weight:700;margin:0 0 1rem}
.form-actions{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:.75rem}
.form-actions .step-h{margin:0}
/* itemized */
.names{grid-column:1/-1;display:grid;grid-template-columns:repeat(auto-fill,minmax(10rem,1fr));gap:.6rem}
.names input,.item-row input[type=text]{width:100%;min-height:50px;border:2px solid #b5a796;border-radius:12px;padding:.5rem .7rem;font:inherit;background:#fff;color:var(--ink)}
.names label{display:block;font-weight:600;font-size:1rem;margin-bottom:.2rem}
.items{grid-column:1/-1;display:flex;flex-direction:column;gap:.8rem}
.item-row{border:2px solid var(--line);border-radius:14px;padding:.7rem .8rem;margin:0;min-width:0;background:#fffdf9}
.item-row legend{font-weight:800;padding:0 .3rem}
.item-top{display:grid;grid-template-columns:1fr 9rem auto;gap:.6rem;align-items:end}
.item-top label{display:block;font-weight:600;font-size:1rem;margin-bottom:.2rem}
.item-top .val-row input{font-size:1.15rem;padding:.5rem .6rem}
.who{display:flex;flex-wrap:wrap;gap:.45rem;margin-top:.6rem}
.who-label{width:100%;font-size:1rem;color:var(--muted);margin:0}
.chip{position:relative}
.chip input{position:absolute;opacity:0;width:1px;height:1px}
.chip span{display:flex;align-items:center;gap:.35rem;min-height:44px;padding:.3rem .85rem;border:2px solid #b5a796;border-radius:999px;background:#fff;cursor:pointer;font-weight:600}
.chip input:checked+span{background:var(--acc);border-color:var(--acc);color:#fff}
.chip input:focus-visible+span{outline:3px solid var(--focus);outline-offset:2px}
.chip-all span{border-style:dashed}
.remove{min-height:50px;min-width:50px;border:2px solid var(--line);border-radius:12px;background:#fff;color:var(--ink);cursor:pointer;font:inherit}
.remove:hover{border-color:var(--err);color:var(--err)}
@media (max-width:520px){.item-top{grid-template-columns:1fr auto}.item-top .f-desc{grid-column:1/-1}}
/* result */
.result-wrap{margin-top:1.5rem}
.print-ready{font-weight:800;font-size:1.2rem;margin:0 0 .6rem;color:var(--brand-d)}
.print-ready:focus{outline:none}
.result{background:var(--card);border:3px solid var(--acc);border-radius:var(--r);padding:1.2rem}
.hero-num{display:flex;flex-wrap:wrap;align-items:baseline;gap:.25rem .75rem;margin:0 0 .8rem}
.hero-num .big{font-size:clamp(2.4rem,9vw,3.4rem);font-weight:900;color:var(--acc);line-height:1.05;font-variant-numeric:tabular-nums}
.hero-num .lab{font-size:1.2rem;font-weight:700}
.res-rows{margin:0;padding:0;list-style:none;border-top:2px solid var(--line)}
.res-rows li{display:flex;justify-content:space-between;gap:1rem;padding:.55rem 0;border-bottom:1px solid var(--line)}
.res-rows b{font-variant-numeric:tabular-nums;white-space:nowrap}
.res-rows .total{font-weight:800;font-size:1.15rem}
.leftover{background:var(--acc-soft);border-radius:12px;padding:.7rem 1rem;margin:1rem 0 0}
.res-round{font-size:.95rem;color:var(--muted);margin:.8rem 0 0}
.preview-actions{display:flex;flex-wrap:wrap;align-items:center;gap:.5rem 1.25rem}
.edit-back{display:inline-flex;align-items:center;min-height:44px;margin-top:1rem;font-weight:600}
.next-step h2{margin-top:1.5rem}
/* cards */
.tpl-cards{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(auto-fill,minmax(14rem,1fr));gap:.75rem}
.tpl-card{display:flex;align-items:center;gap:.75rem;min-height:64px;padding:.75rem 1rem;background:#fff;border:2px solid var(--line);border-radius:16px;text-decoration:none;color:var(--ink);font-weight:700}
.tpl-card:hover{border-color:var(--acc)}
.tpl-ico{display:flex;align-items:center;justify-content:center;width:44px;height:44px;border-radius:12px;background:var(--acc-soft);color:var(--acc)}
/* how-to, seo, faq */
.howto{margin-top:2.5rem}
.howto-steps{list-style:none;margin:0;padding:0;counter-reset:s;display:grid;gap:.6rem}
.howto-steps li{display:flex;align-items:center;gap:.9rem;background:#fff;border:2px solid var(--line);border-radius:16px;padding:.7rem 1rem;counter-increment:s}
.howto-steps li::before{content:counter(s);font-weight:900;color:var(--acc);font-size:1.3rem;min-width:1.2rem}
.how-ico{display:flex;align-items:center;justify-content:center;width:44px;height:44px;flex:none;border-radius:12px;background:var(--acc-soft);color:var(--acc)}
.back-top a{display:inline-flex;align-items:center;min-height:44px;font-weight:600}
.example{background:#fff;border-left:6px solid var(--sun);border-radius:12px;padding:.4rem 1rem;margin:1rem 0}
.faq{background:#fff;border:2px solid var(--line);border-radius:14px;margin:.6rem 0}
.faq summary{display:flex;align-items:center;min-height:52px;padding:.6rem 1rem;font-weight:700;cursor:pointer}
.faq-a{padding:0 1rem .3rem}
/* tables */
.table-scroll{overflow-x:auto;max-width:100%}
table{border-collapse:collapse;width:100%;background:#fff;border-radius:14px;overflow:hidden;border:2px solid var(--line)}
caption{text-align:left;font-weight:700;padding:.5rem 0;color:var(--muted);caption-side:top}
th,td{padding:.6rem .8rem;text-align:left;border-bottom:1px solid var(--line);vertical-align:top}
thead th{background:var(--acc-soft)}
.chart td,.chart th{text-align:right;font-variant-numeric:tabular-nums}
.chart th[scope=row],.chart th.l{text-align:left}
.source{font-size:.95rem;color:var(--muted)}
.source a{display:inline-block;min-height:24px}
@media (max-width:600px){
  table.stack,table.stack tbody,table.stack tr,table.stack th,table.stack td{display:block;width:100%}
  table.stack thead{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0,0,0,0)}
  table.stack tr{border-bottom:2px solid var(--line);padding:.4rem 0}
  table.stack th,table.stack td{border:0;padding:.2rem .8rem}
  .chart th,.chart td{padding:.45rem .2rem;font-size:.95rem}
  .chart{border-width:1px}
}
/* footer */
.site-footer{background:#fff;border-top:1px solid var(--line);padding:1.25rem 0 2rem;font-size:1rem;color:var(--muted)}
.footer-links{display:flex;flex-wrap:wrap;gap:0 1rem}
.footer-links a{display:inline-flex;align-items:center;min-height:44px;color:var(--ink)}
.footer-disclaimer{margin:.6rem 0}
/* print: plain black and white, fits one page */
@media print{
  @page{margin:14mm}
  body{background:#fff;color:#000;font-size:11pt}
  .no-print,.site-header,.site-footer,.crumbs,#tool,.howto,.seo,.faqs,.intro-row,.preview-actions,.next-step,.affiliate,h1{display:none!important}
  .print-only{display:block}
  main{padding:0}
  .result{border:1px solid #000;border-radius:0}
  .hero-num .big{color:#000}
  .leftover{background:none;border:1px solid #000;border-radius:0}
  table{border:1px solid #000;border-radius:0}
  thead th{background:none}
  th,td{border-bottom:1px solid #000;padding:.2rem .5rem}
  .page-info .guide-wrap-hidden{display:none}
  body.print-chart section:not(.chart-wrap){display:none!important}
  a{color:#000;text-decoration:none}
}