/* ===========================================================
   Stamp Duty Calculator — stampdutycalculator.co
   Aesthetic: refined editorial-fintech. Warm paper, deep
   British green, gold accent. Fraunces + Hanken Grotesk.
   =========================================================== */

:root{
  --paper:#faf6ec;
  --paper-2:#f3ecdb;
  --card:#ffffff;
  --ink:#1b1813;
  --ink-soft:#564f44;
  --ink-faint:#857c6c;
  --line:#e6dcc7;
  --line-strong:#d8cbb0;
  --green:#14502f;
  --green-2:#0d3c23;
  --green-tint:#e9f1e9;
  --gold:#b6840f;
  --gold-2:#9a6f08;
  --gold-tint:#f6eccd;
  --red:#9c2b2b;
  --shadow-sm:0 1px 2px rgba(27,24,19,.05);
  --shadow:0 6px 24px -8px rgba(27,24,19,.16);
  --shadow-lg:0 24px 60px -24px rgba(13,60,35,.30);
  --radius:16px;
  --radius-sm:10px;
  --maxw:1080px;
  --font-display:"Fraunces",Georgia,serif;
  --font-body:"Hanken Grotesk",-apple-system,BlinkMacSystemFont,sans-serif;
}

*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  font-family:var(--font-body);
  background:var(--paper);
  color:var(--ink);
  line-height:1.65;
  font-size:17px;
  font-weight:400;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
  background-image:
    radial-gradient(circle at 0% 0%, rgba(20,80,47,.05), transparent 40%),
    radial-gradient(circle at 100% 0%, rgba(182,132,15,.05), transparent 35%);
  background-attachment:fixed;
}
img{max-width:100%;display:block}
a{color:var(--green);text-decoration:none}
a:hover{text-decoration:underline}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 22px}

/* ---------- Typography ---------- */
h1,h2,h3,h4{font-family:var(--font-display);font-weight:540;line-height:1.12;letter-spacing:-.01em;color:var(--ink)}
h1{font-size:clamp(2.3rem,5.5vw,3.6rem);font-optical-sizing:auto}
h2{font-size:clamp(1.7rem,3.4vw,2.35rem);margin-bottom:.55em}
h3{font-size:1.28rem;margin-bottom:.4em}
h4{font-size:1.05rem}
p{margin-bottom:1em;color:var(--ink-soft)}
.eyebrow{font-family:var(--font-body);font-weight:700;font-size:.74rem;letter-spacing:.18em;text-transform:uppercase;color:var(--gold-2)}
.section{padding:64px 0;border-top:1px solid var(--line)}
.section-lead{font-size:1.12rem;max-width:62ch;color:var(--ink-soft)}

/* ---------- Header ---------- */
header.site{
  position:sticky;top:0;z-index:50;
  background:rgba(250,246,236,.86);
  backdrop-filter:saturate(140%) blur(10px);
  border-bottom:1px solid var(--line);
}
.nav{display:flex;align-items:center;justify-content:space-between;height:68px;gap:18px}
.brand{display:flex;align-items:center;gap:11px;font-family:var(--font-display);font-weight:600;font-size:1.18rem;color:var(--ink)}
.brand:hover{text-decoration:none}
.brand .mark{width:40px;height:40px;flex:none;display:block;filter:drop-shadow(0 1px 1.5px rgba(27,24,19,.14))}
.brand .mark svg{display:block;width:100%;height:100%}
.nav-links{display:flex;gap:26px;align-items:center}
.nav-links a{color:var(--ink-soft);font-weight:500;font-size:.96rem}
.nav-links a:hover{color:var(--green);text-decoration:none}
.region-pill{
  font-size:.78rem;font-weight:600;color:var(--green-2);
  background:var(--green-tint);border:1px solid #cfe0cf;
  padding:5px 11px;border-radius:999px;white-space:nowrap;
}
.nav-toggle{display:none;background:none;border:1px solid var(--line-strong);border-radius:9px;width:42px;height:38px;cursor:pointer}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--ink);margin:3px auto;border-radius:2px}

/* ---------- Hero ---------- */
.hero{padding:54px 0 30px;position:relative;overflow:hidden}
.hero .eyebrow{margin-bottom:14px;display:inline-block}
.hero h1{margin-bottom:18px}
.hero h1 em{font-style:italic;color:var(--green);font-weight:500}
.hero-sub{font-size:1.18rem;max-width:60ch;color:var(--ink-soft);margin-bottom:8px}
.hero .updated{font-size:.86rem;color:var(--ink-faint);font-weight:500}

/* ---------- Calculator ---------- */
.calc-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:26px;margin-top:30px}
.panel{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
  box-shadow:var(--shadow);padding:30px;
}
.panel.inputs{position:relative}
.panel-title{font-family:var(--font-body);font-weight:700;font-size:.78rem;letter-spacing:.14em;text-transform:uppercase;color:var(--ink-faint);margin-bottom:20px}

.field{margin-bottom:22px}
.field > label{display:block;font-weight:600;font-size:.95rem;margin-bottom:8px;color:var(--ink)}
.hint{font-size:.82rem;color:var(--ink-faint);font-weight:400}

.price-input{position:relative}
.price-input .cur{position:absolute;left:16px;top:50%;transform:translateY(-50%);font-size:1.35rem;font-weight:600;color:var(--ink-faint);font-family:var(--font-display)}
.price-input input{
  width:100%;font-family:var(--font-display);font-size:1.7rem;font-weight:500;
  padding:14px 16px 14px 38px;border:1.5px solid var(--line-strong);border-radius:var(--radius-sm);
  background:var(--paper);color:var(--ink);outline:none;transition:border-color .15s,box-shadow .15s;
}
.price-input input:focus{border-color:var(--green);box-shadow:0 0 0 4px rgba(20,80,47,.12);background:#fff}

/* segmented control */
.segmented{display:grid;grid-template-columns:repeat(3,1fr);gap:8px}
.seg{
  border:1.5px solid var(--line-strong);background:var(--paper);border-radius:var(--radius-sm);
  padding:12px 8px;cursor:pointer;text-align:center;transition:all .15s;
  font-weight:600;font-size:.9rem;color:var(--ink-soft);line-height:1.25;
}
.seg small{display:block;font-weight:500;font-size:.74rem;color:var(--ink-faint);margin-top:2px}
.seg:hover{border-color:var(--green)}
.seg.active{background:var(--green);border-color:var(--green);color:#fff}
.seg.active small{color:rgba(255,255,255,.8)}

/* toggle */
.toggle-row{display:flex;align-items:flex-start;gap:13px;padding:14px 16px;border:1.5px solid var(--line);border-radius:var(--radius-sm);background:var(--paper);cursor:pointer;transition:border-color .15s}
.toggle-row:hover{border-color:var(--line-strong)}
.switch{position:relative;flex:none;width:44px;height:25px;border-radius:999px;background:var(--line-strong);transition:background .18s;margin-top:2px}
.switch::after{content:"";position:absolute;top:3px;left:3px;width:19px;height:19px;border-radius:50%;background:#fff;box-shadow:var(--shadow-sm);transition:transform .18s}
.toggle-row.on .switch{background:var(--green)}
.toggle-row.on .switch::after{transform:translateX(19px)}
.toggle-row .tx{font-size:.92rem;line-height:1.4}
.toggle-row .tx b{display:block;color:var(--ink);font-weight:600}

.btn-reset{margin-top:4px;background:none;border:none;color:var(--ink-faint);font-family:var(--font-body);font-size:.85rem;font-weight:600;cursor:pointer;text-decoration:underline;text-underline-offset:3px}
.btn-reset:hover{color:var(--green)}

/* result panel */
.panel.result{background:linear-gradient(165deg,#163d28,#0d3c23 60%,#0a2f1b);border:none;color:#fff;display:flex;flex-direction:column}
.panel.result .panel-title{color:rgba(255,255,255,.55)}
.result-amount{font-family:var(--font-display);font-weight:500;font-size:clamp(2.8rem,7vw,3.8rem);line-height:1;color:#fff;letter-spacing:-.02em}
.result-amount .pence{color:var(--gold);font-size:.55em;vertical-align:baseline}
.result-meta{display:flex;gap:26px;margin:18px 0 22px;flex-wrap:wrap}
.result-meta .m{font-size:.84rem}
.result-meta .m span{display:block;color:rgba(255,255,255,.55);font-weight:500;margin-bottom:2px}
.result-meta .m b{font-family:var(--font-display);font-size:1.32rem;font-weight:500;color:var(--gold)}
.breakdown{margin-top:auto;border-top:1px solid rgba(255,255,255,.14);padding-top:16px}
.breakdown table{width:100%;border-collapse:collapse;font-size:.86rem}
.breakdown th{text-align:left;font-weight:600;color:rgba(255,255,255,.55);padding:4px 0;font-size:.72rem;letter-spacing:.06em;text-transform:uppercase}
.breakdown td{padding:6px 0;border-top:1px solid rgba(255,255,255,.08);color:rgba(255,255,255,.92)}
.breakdown td:last-child,.breakdown th:last-child{text-align:right;font-variant-numeric:tabular-nums}
.breakdown tr.sur td{color:var(--gold)}
.breakdown tr.tot td{border-top:1.5px solid rgba(255,255,255,.3);font-weight:700;padding-top:9px;font-size:.95rem}
.note-line{font-size:.8rem;color:rgba(255,255,255,.6);margin-top:14px;line-height:1.5}

/* ---------- Ad zones (reserved space; empty until your ad code loads) ---------- */
.ad-zone{margin:30px auto;display:flex;justify-content:center;align-items:center;min-height:0}
.ad-zone ins{display:block}

/* ---------- Content blocks ---------- */
.prose{max-width:none}
.prose p{font-size:1.04rem}
.cols-2{display:grid;grid-template-columns:1fr 1fr;gap:40px}
.card-soft{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:26px;box-shadow:var(--shadow-sm)}

/* rate tables */
.rate-table{width:100%;border-collapse:collapse;margin:14px 0 6px;background:var(--card);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;font-size:.95rem}
.rate-table caption{caption-side:top;text-align:left;font-family:var(--font-display);font-size:1.1rem;color:var(--ink);padding:14px 18px 0;font-weight:540}
.rate-table th,.rate-table td{padding:12px 18px;text-align:left}
.rate-table thead th{background:var(--green);color:#fff;font-weight:600;font-size:.82rem;letter-spacing:.04em;text-transform:uppercase}
.rate-table tbody tr:nth-child(even){background:var(--paper-2)}
.rate-table td:last-child,.rate-table th:last-child{text-align:right;font-variant-numeric:tabular-nums;font-weight:600}
.rate-table tbody tr td:first-child{color:var(--ink-soft)}

/* steps */
.steps{counter-reset:step;display:grid;gap:18px;margin-top:18px}
.step{display:flex;gap:16px;align-items:flex-start}
.step .n{counter-increment:step;flex:none;width:38px;height:38px;border-radius:50%;background:var(--gold-tint);color:var(--gold-2);display:grid;place-items:center;font-family:var(--font-display);font-weight:600;border:1px solid #e8d9a8}
.step .n::before{content:counter(step)}
.step h4{margin-bottom:2px}
.step p{margin-bottom:0;font-size:.96rem}

/* example callout */
.example{background:var(--green-tint);border:1px solid #cfe0cf;border-left:4px solid var(--green);border-radius:var(--radius-sm);padding:20px 22px;margin:18px 0}
.example h4{color:var(--green-2);margin-bottom:8px}
.example ul{list-style:none;font-size:.95rem}
.example li{padding:3px 0;color:var(--ink-soft);display:flex;justify-content:space-between;border-bottom:1px dashed #cfe0cf}
.example li:last-child{border:none;font-weight:700;color:var(--ink);margin-top:4px;padding-top:8px;border-top:1.5px solid var(--green)}
.example li b{font-variant-numeric:tabular-nums}

ul.ticks{list-style:none;margin:6px 0 16px}
ul.ticks li{position:relative;padding-left:30px;margin-bottom:10px;color:var(--ink-soft)}
ul.ticks li::before{content:"";position:absolute;left:4px;top:9px;width:9px;height:9px;border-radius:2px;background:var(--gold);transform:rotate(45deg)}

/* ---------- FAQ ---------- */
.faq{max-width:820px;margin:0 auto}
.faq-item{border-bottom:1px solid var(--line)}
.faq-q{width:100%;text-align:left;background:none;border:none;cursor:pointer;
  padding:20px 44px 20px 0;position:relative;font-family:var(--font-display);
  font-size:1.12rem;font-weight:500;color:var(--ink);line-height:1.35}
.faq-q::after{content:"+";position:absolute;right:6px;top:50%;transform:translateY(-50%);font-size:1.5rem;color:var(--gold-2);font-family:var(--font-body);transition:transform .2s}
.faq-item.open .faq-q::after{content:"–"}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s ease}
.faq-item.open .faq-a{max-height:640px}
.faq-q:focus-visible{outline:2px solid var(--green);outline-offset:2px;border-radius:6px}
.faq-a-inner{padding:0 0 22px;color:var(--ink-soft);font-size:1rem}
.faq-a-inner p{margin-bottom:.7em}
.faq-a-inner p:last-child{margin-bottom:0}

/* ---------- Disclaimer ---------- */
.disclaimer{background:var(--paper-2);border:1px solid var(--line);border-radius:var(--radius);padding:22px 24px;font-size:.88rem;color:var(--ink-faint);margin-top:10px}
.disclaimer strong{color:var(--ink-soft)}

/* ---------- Footer ---------- */
footer.site{background:var(--green-2);color:rgba(255,255,255,.7);margin-top:30px;padding:56px 0 28px}
footer.site a{color:rgba(255,255,255,.78)}
footer.site a:hover{color:#fff}
.foot-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:34px;margin-bottom:38px}
.foot-brand .brand{color:#fff;margin-bottom:12px}
.foot-brand .mark{filter:drop-shadow(0 1px 2px rgba(0,0,0,.22))}

/* glossary */
.glossary{margin-top:18px}
.glossary > div{display:grid;grid-template-columns:210px 1fr;gap:20px;padding:15px 0;border-top:1px solid var(--line)}
.glossary > div:last-child{border-bottom:1px solid var(--line)}
.glossary dt{font-family:var(--font-display);font-weight:540;color:var(--ink);font-size:1.06rem}
.glossary dd{margin:0;color:var(--ink-soft);font-size:.98rem}
@media(max-width:600px){.glossary > div{grid-template-columns:1fr;gap:3px}}
.foot-brand p{color:rgba(255,255,255,.6);font-size:.92rem;max-width:34ch}
.foot-col h5{font-family:var(--font-body);font-weight:700;font-size:.78rem;letter-spacing:.12em;text-transform:uppercase;color:rgba(255,255,255,.5);margin-bottom:14px}
.foot-col a{display:block;font-size:.93rem;margin-bottom:9px}
.foot-bottom{border-top:1px solid rgba(255,255,255,.14);padding-top:22px;display:flex;justify-content:space-between;flex-wrap:wrap;gap:12px;font-size:.84rem;color:rgba(255,255,255,.55)}
.foot-bottom a{color:rgba(255,255,255,.7)}

/* ---------- Reveal animation ---------- */
.reveal{opacity:0;transform:translateY(16px);transition:opacity .6s ease,transform .6s ease}
.reveal.in{opacity:1;transform:none}

/* ---------- Responsive ---------- */
@media(max-width:880px){
  .calc-grid{grid-template-columns:1fr}
  .cols-2{grid-template-columns:1fr;gap:26px}
  .foot-grid{grid-template-columns:1fr 1fr}
  .nav-links,.region-pill{display:none}
  .nav-links.show{display:flex;position:absolute;top:68px;left:0;right:0;flex-direction:column;background:var(--paper);border-bottom:1px solid var(--line);padding:18px 22px;gap:16px}
  .nav-toggle{display:block}
}
@media(max-width:520px){
  body{font-size:16px}
  .panel{padding:22px}
  .foot-grid{grid-template-columns:1fr 1fr}
  .foot-brand{grid-column:1/-1}
  .segmented{grid-template-columns:1fr}
  .result-amount{font-size:2.6rem}
}
@media(prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important}
  .reveal{opacity:1;transform:none}
}