/* =========================================================
   BeltSizeCalculator.com — shared stylesheet
   Leathercraft workshop design system
========================================================= */
:root{
  --parchment:#F7F1E6;
  --parchment-dim:#EFE4D0;
  --ink:#2B211B;
  --ink-soft:#6B5D4F;
  --leather:#8B5A2B;
  --leather-dark:#6B4420;
  --brass:#A67C3D;
  --brass-dark:#8A6530;
  --oxblood:#7A2E2E;
  --oxblood-dark:#5E2222;
  --line:#E0D3B8;
  --radius:14px;
  --shadow:0 14px 32px -16px rgba(43,33,27,0.30);
  --font-display:'Roboto Slab', serif;
  --font-body:'Barlow', sans-serif;
  --font-mono:'IBM Plex Mono', monospace;
}
*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{margin:0; background:var(--parchment); color:var(--ink); font-family:var(--font-body); line-height:1.65; -webkit-font-smoothing:antialiased;}
a{color:var(--oxblood); text-decoration:none;}
a:hover{text-decoration:underline;}
.wrap{max-width:1100px; margin:0 auto; padding:0 24px;}
h1,h2,h3{font-family:var(--font-display); color:var(--ink); line-height:1.2; margin:0 0 16px;}
h1{font-size:clamp(2rem,4.2vw,2.9rem); font-weight:700;}
h2{font-size:clamp(1.4rem,2.8vw,1.9rem); font-weight:700;}
h3{font-size:1.08rem; font-weight:700;}
p{margin:0 0 14px;}
.eyebrow{font-family:var(--font-mono); font-size:0.7rem; letter-spacing:0.12em; text-transform:uppercase; color:var(--oxblood); font-weight:700;}
:focus-visible{outline:3px solid var(--brass); outline-offset:2px;}
.stitch-rule{height:1px; background-image:repeating-linear-gradient(90deg, var(--leather-dark) 0 6px, transparent 6px 12px); opacity:0.5;}

/* HEADER / NAV */
header.site{padding:16px 0; border-bottom:1px solid var(--line); background:var(--parchment); position:relative; z-index:50;}
.nav{display:flex; align-items:center; justify-content:space-between; gap:18px;}
.brand{font-family:var(--font-display); font-weight:700; font-size:1.2rem; color:var(--ink); display:flex; align-items:center; gap:9px; flex-shrink:0;}
.brand:hover{text-decoration:none;}
.brand .badge{width:28px; height:28px; border-radius:50%; display:flex; align-items:center; justify-content:center; overflow:hidden; flex-shrink:0;}
.brand .badge svg{width:100%; height:100%;}
.nav-links{display:flex; gap:22px; font-size:0.88rem; font-weight:500; align-items:center;}
.nav-links > a{color:var(--ink-soft);}
.free-pill{background:var(--oxblood); color:#fff; font-family:var(--font-mono); font-size:0.65rem; padding:4px 10px; border-radius:999px; white-space:nowrap;}
.nav-drop{position:relative;}
.nav-drop > button{background:none; border:0; font-family:var(--font-body); font-size:0.88rem; font-weight:500; color:var(--ink-soft); cursor:pointer; display:flex; align-items:center; gap:4px; padding:6px 0;}
.nav-drop .menu{position:absolute; top:100%; left:0; background:#fff; border:1px solid var(--line); border-radius:10px; box-shadow:var(--shadow); padding:8px; min-width:225px; max-height:70vh; overflow-y:auto; display:none; flex-direction:column; margin-top:6px;}
.nav-drop.open .menu{display:flex;}
.nav-drop .menu a{color:var(--ink); font-size:0.86rem; padding:8px 10px; border-radius:6px;}
.nav-drop .menu a:hover{background:var(--parchment-dim); text-decoration:none;}
.nav-drop .menu-label{font-family:var(--font-mono); font-size:0.62rem; letter-spacing:0.08em; text-transform:uppercase; color:var(--ink-soft); padding:8px 10px 2px; margin-top:4px;}
.nav-drop .menu-label:first-child{margin-top:0;}
@media(max-width:900px){.nav-links{display:none;}}

/* PAGE BANNER */
.page-banner{padding:44px 0 32px; border-bottom:1px solid var(--line);}
.page-banner .lede{font-size:1.02rem; color:var(--ink-soft); max-width:62ch;}
.breadcrumb{font-family:var(--font-mono); font-size:0.75rem; color:var(--ink-soft); margin-bottom:14px;}
.breadcrumb a{color:var(--ink-soft);}

main{padding-bottom:20px;}
section{padding:44px 0;}
.section-inner{max-width:780px;}

/* CALCULATOR CARD */
.calc-layout{display:grid; grid-template-columns:1fr 1fr; gap:40px; align-items:start;}
@media(max-width:900px){.calc-layout{grid-template-columns:1fr;}}
.calc-card{background:#fff; border:1px solid var(--line); border-radius:var(--radius); box-shadow:var(--shadow); padding:26px 24px; position:relative;}
.unit-toggle{display:inline-flex; background:var(--parchment-dim); border:1px solid var(--line); border-radius:999px; padding:3px; margin-bottom:18px;}
.unit-toggle button{border:0; background:transparent; padding:7px 15px; border-radius:999px; font-family:var(--font-mono); font-size:0.78rem; font-weight:700; cursor:pointer; color:var(--ink-soft);}
.unit-toggle button.active{background:var(--oxblood); color:#fff;}
.field{margin-bottom:16px;}
.field label{display:block; font-weight:700; font-size:0.9rem; margin-bottom:6px;}
.field .hint{font-size:0.78rem; color:var(--ink-soft); margin-top:5px;}
.field input[type=number], .field select{width:100%; font-family:var(--font-mono); font-size:1.1rem; padding:11px 13px; border-radius:10px; border:1.5px solid var(--line); background:var(--parchment); color:var(--ink);}
.field input[type=number]:focus, .field select:focus{border-color:var(--oxblood); outline:none;}
.field-row{display:grid; grid-template-columns:1fr 1fr; gap:12px;}
.btn{display:inline-flex; align-items:center; justify-content:center; gap:8px; font-family:var(--font-body); font-weight:700; font-size:0.98rem; padding:13px 20px; border-radius:10px; border:0; cursor:pointer; width:100%;}
.btn-primary{background:var(--oxblood); color:#fff;}
.btn-primary:hover{background:var(--oxblood-dark);}
#error-msg{color:var(--oxblood-dark); font-size:0.83rem; margin-top:10px; display:none; font-weight:700;}

/* RESULT - belt strap signature visual */
#results-section{margin-top:22px; display:none;}
.strap-card{background:var(--ink); border-radius:12px; padding:20px 18px; text-align:center; color:#fff; animation:cardIn .4s ease;}
@keyframes cardIn{from{opacity:0; transform:translateY(8px);} to{opacity:1; transform:none;}}
.result-label{font-family:var(--font-mono); font-size:0.68rem; letter-spacing:0.14em; text-transform:uppercase; color:#D8C7AC;}
.result-main{font-family:var(--font-display); font-weight:700; font-size:2.4rem; margin:6px 0 2px;}
.result-sub{font-family:var(--font-mono); font-size:0.78rem; color:#D8C7AC;}
.strap-svg{margin-top:14px;}
.chip-row{display:flex; justify-content:center; gap:9px; margin-top:14px; flex-wrap:wrap; font-family:var(--font-mono); font-size:0.8rem;}
.chip{background:rgba(255,255,255,0.12); padding:6px 12px; border-radius:999px;}
.chip.self{background:var(--brass);}

.result-actions{display:flex; gap:10px; margin-top:16px;}
.action-btn{flex:1; display:inline-flex; align-items:center; justify-content:center; gap:7px; background:var(--parchment-dim); border:1px solid var(--line); color:var(--ink); font-family:var(--font-body); font-weight:700; font-size:0.83rem; padding:10px 8px; border-radius:9px; cursor:pointer;}
.action-btn:hover{background:#E5D6B8;}
.copy-toast{display:none; text-align:center; font-size:0.78rem; color:var(--oxblood-dark); font-weight:700; margin:8px 0 0;}
.copy-toast.show{display:block;}

.illustration-card{margin-top:16px; text-align:center; background:var(--parchment-dim); border:1px solid var(--line); border-radius:10px; padding:14px;}
.illustration-caption{font-size:0.76rem; color:var(--ink-soft); margin:6px 0 0;}

/* TABLES */
.chart-wrap{overflow-x:auto; margin-top:16px; border:1px solid var(--line); border-radius:10px;}
table.ref-table{width:100%; border-collapse:collapse; font-size:0.85rem; font-family:var(--font-mono);}
table.ref-table th, table.ref-table td{padding:9px 8px; text-align:center; border:1px solid var(--line);}
table.ref-table thead th{background:var(--ink); color:#fff; font-weight:700; font-size:0.72rem;}
table.ref-table tbody th{background:var(--parchment-dim); font-weight:700; text-align:left; padding-left:12px;}
table.ref-table td{background:#fff;}
table.ref-table td.hit{background:var(--oxblood); color:#fff; font-weight:700;}

/* CARDS / GRIDS */
.card-grid{display:grid; grid-template-columns:repeat(2,1fr); gap:18px; margin-top:10px;}
@media(max-width:640px){.card-grid{grid-template-columns:1fr;}}
.info-card{background:#fff; border:1px solid var(--line); border-radius:12px; padding:20px;}
.info-card .tag{display:inline-block; font-family:var(--font-mono); font-size:0.66rem; letter-spacing:0.08em; text-transform:uppercase; color:var(--brass-dark); background:#F1E6D0; padding:3px 9px; border-radius:999px; margin-bottom:9px;}

.steps{display:grid; gap:16px; margin-top:14px;}
.step{display:grid; grid-template-columns:42px 1fr; gap:14px; align-items:flex-start;}
.step .num{width:42px; height:42px; border-radius:6px; background:var(--parchment-dim); border:1.5px solid var(--ink); color:var(--ink); font-family:var(--font-mono); font-weight:700; display:flex; align-items:center; justify-content:center;}
.formula-box{background:var(--parchment-dim); border:1px solid var(--line); border-left:4px solid var(--oxblood); border-radius:10px; padding:15px 17px; font-family:var(--font-mono); font-size:0.85rem; margin:16px 0;}

.tips-grid{display:grid; grid-template-columns:repeat(2,1fr); gap:18px; margin-top:10px;}
@media(max-width:640px){.tips-grid{grid-template-columns:1fr;}}
.tip-card{background:#fff; border:1px solid var(--line); border-radius:12px; padding:18px;}

/* FAQ */
.faq-item{border:1px solid var(--line); border-radius:10px; margin-bottom:10px; padding:0 16px; background:#fff;}
.faq-q{width:100%; text-align:left; background:none; border:0; padding:16px 0; font-family:var(--font-body); font-weight:700; font-size:0.96rem; cursor:pointer; display:flex; justify-content:space-between; gap:12px; color:var(--ink);}
.faq-a{max-height:0; overflow:hidden; color:var(--ink-soft); font-size:0.92rem;}
.faq-item.open .faq-a{max-height:400px; padding-bottom:15px;}
.faq-q .plus{font-family:var(--font-mono); color:var(--oxblood); font-size:1.15rem; flex-shrink:0;}

.search-wrap{margin:22px 0 8px; position:relative;}
#faq-search{width:100%; font-family:var(--font-body); font-size:1rem; padding:13px 16px 13px 42px; border-radius:10px; border:1.5px solid var(--line); background:#fff;}
#faq-search:focus{border-color:var(--oxblood); outline:none;}
.search-wrap svg{position:absolute; left:14px; top:50%; transform:translateY(-50%); color:var(--ink-soft);}
#no-results{display:none; color:var(--ink-soft); padding:18px 0; font-style:italic;}

/* RELATED */
.related-grid{display:grid; grid-template-columns:repeat(3,1fr); gap:15px; margin-top:10px;}
@media(max-width:760px){.related-grid{grid-template-columns:1fr;}}
.related-card{border:1px solid var(--line); border-radius:10px; padding:16px; background:#fff;}

.final-cta{background:var(--ink); color:#fff; text-align:center; padding:56px 0;}
.final-cta h2{color:#fff;}
.final-cta p{color:#D8C7AC; max-width:52ch; margin:0 auto 20px;}
.final-cta .btn-primary{width:auto; padding:13px 30px;}

footer{padding:32px 0 42px; text-align:center; color:var(--ink-soft); font-size:0.83rem;}
footer .links{margin-top:10px; display:flex; gap:14px; justify-content:center; flex-wrap:wrap;}
footer .disc{max-width:640px; margin:16px auto 0; font-size:0.76rem;}

#scroll-top{position:fixed; right:20px; bottom:20px; width:44px; height:44px; border-radius:8px; background:var(--ink); color:#fff; border:0; display:flex; align-items:center; justify-content:center; cursor:pointer; box-shadow:var(--shadow); opacity:0; pointer-events:none; transform:translateY(8px); transition:opacity .25s ease, transform .25s ease; z-index:40;}
#scroll-top.show{opacity:1; pointer-events:auto; transform:none;}
#scroll-top:hover{background:var(--oxblood);}

@media (prefers-reduced-motion: reduce){ html{scroll-behavior:auto;} .strap-card{animation:none;} }

@media print{
  header.site, .page-banner .breadcrumb, .unit-toggle, .field, .btn-primary, #error-msg,
  .result-actions, .final-cta, footer, #scroll-top, section.no-print { display:none !important; }
  body{background:#fff;}
  .calc-card{box-shadow:none; border:none;}
  #results-section{display:block !important;}
}