/* WebCalculator.co.uk — premium UK calculator design system */
:root{
  --ink:#0b1220;--ink-soft:#33405a;--muted:#64748b;--line:#e6eaf1;
  --bg:#f6f8fc;--card:#ffffff;
  --brand:#0a5cff;--brand-d:#0742b8;--brand-l:#e8f0ff;
  --accent:#00b894;--accent-d:#018f72;--accent-l:#e3f8f1;
  --warn:#b45309;--danger:#dc2626;
  --gold:#0b1220;
  --shadow:0 1px 2px rgba(16,24,40,.04),0 8px 24px rgba(16,24,40,.06);
  --shadow-lg:0 24px 60px rgba(10,40,120,.14);
  --r:16px;--r-sm:10px;--maxw:1120px;
  --grad:linear-gradient(135deg,#0a5cff 0%,#5b3df5 100%);
  --grad-warm:linear-gradient(135deg,#00b894 0%,#0a9bd6 100%);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{margin:0;font-family:'Inter',-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,Helvetica,Arial,sans-serif;
  color:var(--ink);background:var(--bg);line-height:1.65;font-size:16.5px;-webkit-font-smoothing:antialiased}
a{color:var(--brand);text-decoration:none}
a:hover{text-decoration:underline}
img{max-width:100%;height:auto}
h1,h2,h3,h4{line-height:1.18;letter-spacing:-.02em;color:var(--ink);margin:0 0 .5em}
h1{font-size:clamp(1.85rem,4.4vw,3rem);font-weight:800}
h2{font-size:clamp(1.4rem,3vw,2rem);font-weight:780;margin-top:0}
h3{font-size:1.18rem;font-weight:720}
p{margin:0 0 1em}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 20px}
.muted{color:var(--muted)}
.small{font-size:.9rem}

/* ---------- Header ---------- */
.site-head{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.86);backdrop-filter:saturate(180%) blur(14px);
  border-bottom:1px solid var(--line)}
.nav{display:flex;align-items:center;gap:14px;height:64px}
.brand{display:flex;align-items:center;gap:10px;font-weight:800;font-size:1.16rem;letter-spacing:-.03em;color:var(--ink)}
.brand:hover{text-decoration:none}
.brand .mark{width:34px;height:34px;border-radius:9px;background:var(--grad);display:grid;place-items:center;color:#fff;font-weight:800;font-size:1.05rem;box-shadow:0 6px 16px rgba(10,92,255,.32)}
.brand b{color:var(--brand)}
.nav-links{margin-left:auto;display:flex;gap:6px;align-items:center}
.nav-links a{color:var(--ink-soft);font-weight:600;font-size:.94rem;padding:8px 12px;border-radius:9px}
.nav-links a:hover{background:var(--brand-l);color:var(--brand-d);text-decoration:none}
.nav-cta{background:var(--brand);color:#fff!important;box-shadow:0 6px 16px rgba(10,92,255,.28)}
.nav-cta:hover{background:var(--brand-d)!important}
.burger{display:none;margin-left:auto;background:none;border:1px solid var(--line);border-radius:9px;width:42px;height:42px;font-size:1.3rem;cursor:pointer}
@media(max-width:860px){
  .nav-links{display:none;position:absolute;top:64px;left:0;right:0;flex-direction:column;background:#fff;border-bottom:1px solid var(--line);padding:10px 16px;gap:2px;box-shadow:var(--shadow)}
  .nav-links.open{display:flex}
  .nav-links a{padding:12px;width:100%}
  .burger{display:block}
}

/* ---------- Hero ---------- */
.hero{position:relative;overflow:hidden;background:
  radial-gradient(900px 360px at 88% -8%,rgba(91,61,245,.14),transparent 60%),
  radial-gradient(760px 340px at 6% 6%,rgba(10,92,255,.12),transparent 58%),
  linear-gradient(180deg,#ffffff 0%,#f6f8fc 100%)}
.hero-grid{display:grid;grid-template-columns:1.05fr 1fr;gap:40px;align-items:center;padding:54px 0 46px}
@media(max-width:920px){.hero-grid{grid-template-columns:1fr;gap:28px;padding:34px 0 30px}}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-weight:700;font-size:.8rem;letter-spacing:.06em;text-transform:uppercase;
  color:var(--brand-d);background:var(--brand-l);padding:6px 12px;border-radius:999px;margin-bottom:16px}
.hero p.lead{font-size:1.12rem;color:var(--ink-soft);max-width:46ch}
.hero-badges{display:flex;flex-wrap:wrap;gap:10px;margin-top:18px}
.chip{display:inline-flex;align-items:center;gap:7px;background:#fff;border:1px solid var(--line);border-radius:999px;padding:7px 13px;font-size:.86rem;font-weight:600;color:var(--ink-soft);box-shadow:var(--shadow)}
.chip svg{flex:0 0 auto}

/* ---------- Calculator card ---------- */
.calc{background:var(--card);border:1px solid var(--line);border-radius:var(--r);box-shadow:var(--shadow-lg);padding:26px;position:relative}
.calc::before{content:"";position:absolute;inset:0;border-radius:var(--r);padding:1px;background:var(--grad);
  -webkit-mask:linear-gradient(#fff 0 0) content-box,linear-gradient(#fff 0 0);-webkit-mask-composite:xor;mask-composite:exclude;opacity:.5;pointer-events:none}
.calc h2{font-size:1.25rem;margin-bottom:4px}
.calc .sub{color:var(--muted);font-size:.92rem;margin-bottom:18px}
.field{margin-bottom:15px}
.field label{display:block;font-weight:650;font-size:.9rem;margin-bottom:6px;color:var(--ink)}
.field .hint{font-weight:400;color:var(--muted);font-size:.82rem}
.input-money{position:relative}
.input-money .sym{position:absolute;left:14px;top:50%;transform:translateY(-50%);color:var(--muted);font-weight:600}
.input-money input{padding-left:30px}
input[type=number],input[type=text],select{width:100%;padding:13px 14px;border:1.5px solid var(--line);border-radius:var(--r-sm);
  font-size:1rem;font-family:inherit;background:#fcfdff;color:var(--ink);transition:border-color .15s,box-shadow .15s}
input:focus,select:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 4px var(--brand-l)}
.row2{display:grid;grid-template-columns:1fr 1fr;gap:12px}
@media(max-width:480px){.row2{grid-template-columns:1fr}}
.seg{display:flex;gap:6px;background:#eef2f9;border-radius:11px;padding:4px}
.seg button{flex:1;border:none;background:none;padding:9px 6px;border-radius:8px;font-weight:650;font-size:.88rem;color:var(--ink-soft);cursor:pointer;font-family:inherit}
.seg button.on{background:#fff;color:var(--brand-d);box-shadow:var(--shadow)}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;width:100%;border:none;cursor:pointer;font-family:inherit;
  background:var(--grad);color:#fff;font-weight:750;font-size:1.05rem;padding:15px;border-radius:var(--r-sm);
  box-shadow:0 10px 24px rgba(10,92,255,.3);transition:transform .12s,box-shadow .12s;margin-top:6px}
.btn:hover{transform:translateY(-1px);box-shadow:0 14px 30px rgba(10,92,255,.38)}
.btn:active{transform:translateY(0)}

/* ---------- Results ---------- */
.result{margin-top:20px;border-top:1px dashed var(--line);padding-top:20px}
.result.hide{display:none}
.headline{background:var(--accent-l);border:1px solid #bdeede;border-radius:var(--r-sm);padding:18px;text-align:center;margin-bottom:16px}
.headline .lbl{font-size:.82rem;font-weight:650;text-transform:uppercase;letter-spacing:.05em;color:var(--accent-d)}
.headline .big{font-size:clamp(2rem,7vw,2.7rem);font-weight:850;color:var(--ink);letter-spacing:-.03em;line-height:1.1}
.headline .per{color:var(--muted);font-size:.9rem}
.breakdown{width:100%;border-collapse:collapse;font-size:.96rem}
.breakdown th,.breakdown td{padding:10px 6px;text-align:right;border-bottom:1px solid var(--line)}
.breakdown th:first-child,.breakdown td:first-child{text-align:left;color:var(--ink-soft)}
.breakdown thead th{font-size:.78rem;text-transform:uppercase;letter-spacing:.04em;color:var(--muted);border-bottom:1.5px solid var(--line)}
.breakdown tr.total td{font-weight:800;font-size:1.05rem;border-top:2px solid var(--ink);border-bottom:none;color:var(--ink)}
.breakdown td.neg{color:var(--danger)}
.bars{margin:16px 0 4px}
.bar{height:13px;border-radius:7px;background:#eef2f9;overflow:hidden;display:flex;margin-bottom:9px}
.bar i{display:block;height:100%}
.bar .net{background:var(--accent)}.bar .tax{background:#5b3df5}.bar .ni{background:#0a9bd6}.bar .sl{background:#f0a020}.bar .pen{background:#94a3b8}
.legend{display:flex;flex-wrap:wrap;gap:12px;font-size:.84rem;color:var(--ink-soft)}
.legend span{display:inline-flex;align-items:center;gap:6px}
.legend b{width:11px;height:11px;border-radius:3px;display:inline-block}

/* ---------- Sections ---------- */
section{padding:46px 0}
.section-tight{padding:30px 0}
.lead-in{max-width:62ch}
.grid-cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(252px,1fr));gap:18px}
.tool-card{background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:22px;box-shadow:var(--shadow);transition:transform .15s,box-shadow .15s,border-color .15s;display:block}
.tool-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-lg);border-color:#cfdcff;text-decoration:none}
.tool-card .ico{width:44px;height:44px;border-radius:11px;background:var(--brand-l);display:grid;place-items:center;margin-bottom:14px;font-size:1.4rem}
.tool-card h3{margin-bottom:5px;color:var(--ink)}
.tool-card p{color:var(--muted);font-size:.92rem;margin:0}
.tool-card .go{display:inline-flex;align-items:center;gap:5px;margin-top:12px;color:var(--brand-d);font-weight:700;font-size:.9rem}

.feature-row{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:22px}
.feature{padding:4px}
.feature .ico{width:46px;height:46px;border-radius:12px;background:var(--accent-l);display:grid;place-items:center;font-size:1.4rem;margin-bottom:12px}

.panel{background:#fff;border:1px solid var(--line);border-radius:var(--r);box-shadow:var(--shadow);padding:28px}
.rate-table{width:100%;border-collapse:collapse}
.rate-table th,.rate-table td{padding:12px 14px;text-align:left;border-bottom:1px solid var(--line);font-size:.96rem}
.rate-table thead th{background:#f3f6fc;font-size:.82rem;text-transform:uppercase;letter-spacing:.03em;color:var(--ink-soft)}
.rate-table tr:last-child td{border-bottom:none}
.rate-table td:last-child,.rate-table th:last-child{text-align:right;font-variant-numeric:tabular-nums}

.callout{border-left:4px solid var(--brand);background:var(--brand-l);border-radius:0 var(--r-sm) var(--r-sm) 0;padding:16px 18px;margin:20px 0}
.callout.tip{border-color:var(--accent);background:var(--accent-l)}
.callout.warn{border-color:var(--warn);background:#fff7ed}

/* FAQ */
.faq details{background:#fff;border:1px solid var(--line);border-radius:var(--r-sm);margin-bottom:12px;overflow:hidden}
.faq summary{padding:17px 20px;font-weight:680;cursor:pointer;list-style:none;display:flex;justify-content:space-between;align-items:center;gap:12px;color:var(--ink)}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";font-size:1.4rem;color:var(--brand);font-weight:400;transition:transform .2s}
.faq details[open] summary::after{transform:rotate(45deg)}
.faq details[open] summary{border-bottom:1px solid var(--line)}
.faq .a{padding:4px 20px 18px;color:var(--ink-soft)}
.faq .a p:last-child{margin-bottom:0}

/* breadcrumb */
.crumb{font-size:.85rem;color:var(--muted);padding:14px 0 0}
.crumb a{color:var(--muted)}.crumb a:hover{color:var(--brand)}
.crumb span{color:var(--ink-soft)}

/* author box */
.author{display:flex;gap:16px;align-items:flex-start;background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:20px;box-shadow:var(--shadow)}
.author .pic{flex:0 0 64px;width:64px;height:64px;border-radius:50%;background:var(--grad);display:grid;place-items:center;color:#fff;font-weight:800;font-size:1.5rem;overflow:hidden}
.author .pic img{width:100%;height:100%;object-fit:cover}
.author .meta b{font-size:1.02rem}
.author .meta .role{color:var(--muted);font-size:.88rem;margin-bottom:6px}
.author .meta p{font-size:.9rem;color:var(--ink-soft);margin:0}

/* trust strip */
.trust{display:flex;flex-wrap:wrap;gap:10px 26px;align-items:center;justify-content:center;padding:18px 0;border-top:1px solid var(--line);border-bottom:1px solid var(--line);margin:0;color:var(--muted);font-size:.86rem;font-weight:600}
.trust span{display:inline-flex;align-items:center;gap:7px}

/* ad slot */
.ad-slot{margin:30px auto;max-width:var(--maxw);text-align:center;min-height:0}
.ad-label{font-size:.7rem;letter-spacing:.1em;text-transform:uppercase;color:#b6bfce;margin-bottom:4px}

/* CTA band */
.cta-band{background:var(--grad);color:#fff;border-radius:var(--r);padding:34px;text-align:center;box-shadow:var(--shadow-lg)}
.cta-band h2{color:#fff}
.cta-band p{color:rgba(255,255,255,.9);max-width:54ch;margin:0 auto 18px}
.cta-band .btn{display:inline-flex;width:auto;background:#fff;color:var(--brand-d);padding:14px 28px;box-shadow:0 10px 24px rgba(0,0,0,.18)}
.cta-band .btn:hover{background:#f0f4ff}

/* footer */
.site-foot{background:#0b1220;color:#aeb9cd;padding:48px 0 28px;margin-top:48px}
.foot-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:30px}
@media(max-width:760px){.foot-grid{grid-template-columns:1fr 1fr}}
@media(max-width:440px){.foot-grid{grid-template-columns:1fr}}
.site-foot h4{color:#fff;font-size:.82rem;text-transform:uppercase;letter-spacing:.08em;margin-bottom:14px}
.site-foot a{color:#aeb9cd;display:block;padding:4px 0;font-size:.92rem}
.site-foot a:hover{color:#fff;text-decoration:none}
.foot-brand .brand{color:#fff;margin-bottom:12px}
.foot-brand p{font-size:.9rem;max-width:34ch}
.foot-bottom{border-top:1px solid #1c2740;margin-top:30px;padding-top:20px;font-size:.84rem;display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between}
.disclaimer{font-size:.82rem;color:#7c879c;max-width:80ch;margin-top:8px}

.note{font-size:.84rem;color:var(--muted);margin-top:14px}
.related-pills{display:flex;flex-wrap:wrap;gap:10px}
.related-pills a{background:#fff;border:1px solid var(--line);border-radius:999px;padding:8px 15px;font-size:.9rem;font-weight:600;color:var(--ink-soft);box-shadow:var(--shadow)}
.related-pills a:hover{border-color:var(--brand);color:var(--brand-d);text-decoration:none}
.two-col{display:grid;grid-template-columns:1.6fr 1fr;gap:32px;align-items:start}
@media(max-width:880px){.two-col{grid-template-columns:1fr}}
.toc{position:sticky;top:80px;background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:18px 20px;box-shadow:var(--shadow);font-size:.92rem}
.toc h4{font-size:.78rem;text-transform:uppercase;letter-spacing:.06em;color:var(--muted);margin-bottom:10px}
.toc a{display:block;padding:5px 0;color:var(--ink-soft)}
.toc a:hover{color:var(--brand)}