/* PocketNum — shared styles. Mobile-first, teal/orange theme. */
:root{
  --teal:#0f766e;
  --teal-dark:#115e59;
  --teal-deep:#0b3f3a;
  --teal-soft:#e6f4f1;
  --orange:#ea580c;
  --orange-soft:#fff1e6;
  --ink:#17322e;
  --muted:#5c6f6a;
  --bg:#f3f8f6;
  --card:#ffffff;
  --border:#d9e7e2;
  --radius:14px;
  --shadow:0 2px 10px rgba(11,63,58,.07);
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:system-ui,-apple-system,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
  background:var(--bg);color:var(--ink);line-height:1.6;font-size:16px;
}
a{color:var(--teal);text-decoration:none}
a:hover{text-decoration:underline}
.wrap{max-width:1020px;margin:0 auto;padding:0 16px}

/* Header */
.site-header{background:linear-gradient(135deg,var(--teal-deep),var(--teal-dark));color:#fff}
.header-in{display:flex;flex-wrap:wrap;align-items:center;gap:10px 18px;padding:14px 0}
.logo{font-size:1.35rem;font-weight:800;color:#fff;letter-spacing:.2px}
.logo span{color:#fdba74}
.logo:hover{text-decoration:none}
.main-nav{margin-left:auto}
.main-nav ul{list-style:none;display:flex;flex-wrap:wrap;gap:4px}
.main-nav a{color:#d9f2ec;font-size:.92rem;padding:6px 9px;border-radius:8px;display:block}
.main-nav a:hover{background:rgba(255,255,255,.12);text-decoration:none;color:#fff}

/* Hero / page head */
.hero{padding:30px 0 8px}
.hero h1{font-size:1.9rem;line-height:1.2;color:var(--teal-deep)}
.hero p.lead{color:var(--muted);margin-top:8px;max-width:640px;font-size:1.05rem}
.page-head{padding:28px 0 4px}
.page-head h1{font-size:1.8rem;line-height:1.22;color:var(--teal-deep)}
.page-head p{color:var(--muted);margin-top:8px;max-width:660px}

/* Tool card */
.tool-card{
  background:var(--card);border:1px solid var(--border);border-radius:var(--radius);
  box-shadow:var(--shadow);padding:20px;margin:20px 0;
}
.tool-card h2{font-size:1.15rem;color:var(--teal-dark);margin-bottom:12px}
.grid-2{display:grid;grid-template-columns:1fr;gap:16px}
@media(min-width:720px){.grid-2{grid-template-columns:1fr 1fr}}
.panel{background:var(--teal-soft);border:1px solid var(--border);border-radius:12px;padding:16px}
.panel.alt{background:var(--orange-soft)}
.panel h3{font-size:1rem;margin-bottom:10px;color:var(--teal-deep)}
.field{margin-bottom:12px}
.field label{display:block;font-size:.88rem;font-weight:600;margin-bottom:5px;color:var(--teal-deep)}
.field .row{display:flex;gap:8px}
.field input,.field select{
  width:100%;padding:11px 12px;font-size:1.05rem;border:1.5px solid #bcd4cd;border-radius:9px;
  background:#fff;color:var(--ink);outline:none;
}
.field input:focus,.field select:focus{border-color:var(--teal);box-shadow:0 0 0 3px rgba(15,118,110,.15)}
.unit-tag{
  align-self:center;background:var(--teal);color:#fff;font-weight:700;font-size:.85rem;
  padding:10px 12px;border-radius:9px;white-space:nowrap;
}
.panel.alt .unit-tag{background:var(--orange)}
.results{margin-top:6px}
.result-line{
  display:flex;justify-content:space-between;align-items:baseline;gap:10px;
  padding:8px 2px;border-bottom:1px dashed var(--border);
}
.result-line:last-child{border-bottom:none}
.result-line .r-label{color:var(--muted);font-size:.92rem}
.result-line .r-value{font-weight:700;font-size:1.12rem;color:var(--teal-deep);text-align:right}
.result-line .r-value.big{font-size:1.45rem;color:var(--orange)}
.swap-note{font-size:.85rem;color:var(--muted);margin-top:8px}

/* Quick widget on index */
.quick-widget{background:linear-gradient(135deg,var(--teal),var(--teal-dark));color:#fff;border-radius:var(--radius);padding:20px;margin:22px 0}
.quick-widget h2{color:#fff;font-size:1.15rem;margin-bottom:8px}
.quick-widget p{color:#d9f2ec;font-size:.95rem}
.quick-widget .q-row{display:flex;gap:8px;margin-top:12px;flex-wrap:wrap}
.quick-widget input{flex:1;min-width:150px;padding:11px 12px;font-size:1.05rem;border:none;border-radius:9px;outline:none}
.quick-widget .q-out{font-weight:700;font-size:1.15rem;margin-top:12px;color:#fed7aa}

/* Cards grid */
.card-grid{display:grid;grid-template-columns:1fr;gap:14px;margin:18px 0 6px}
@media(min-width:600px){.card-grid{grid-template-columns:1fr 1fr}}
@media(min-width:900px){.card-grid{grid-template-columns:1fr 1fr 1fr}}
.tool-link-card{
  background:var(--card);border:1px solid var(--border);border-radius:var(--radius);
  padding:18px;box-shadow:var(--shadow);display:block;color:var(--ink);
}
.tool-link-card:hover{text-decoration:none;border-color:var(--teal);transform:translateY(-2px)}
.tool-link-card .t-icon{font-size:1.7rem}
.tool-link-card h3{font-size:1.08rem;color:var(--teal-dark);margin:8px 0 4px}
.tool-link-card p{color:var(--muted);font-size:.93rem}

/* Sections */
.section{margin:26px 0}
.section h2{font-size:1.35rem;color:var(--teal-deep);margin-bottom:10px}
.section p{margin-bottom:10px;max-width:760px}
.section ul{margin:0 0 10px 20px;max-width:760px}
.formula{
  background:var(--teal-deep);color:#e6fffa;border-radius:10px;padding:14px 16px;
  font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:.98rem;
  overflow-x:auto;margin:10px 0;
}
.formula b{color:#fdba74}

/* Tables */
.table-wrap{overflow-x:auto;margin:12px 0}
table{border-collapse:collapse;width:100%;background:var(--card);font-size:.95rem}
th,td{border:1px solid var(--border);padding:8px 11px;text-align:left;white-space:nowrap}
th{background:var(--teal);color:#fff;font-weight:600}
tr:nth-child(even) td{background:#f6fbf9}
td.num,th.num{text-align:right}

/* Tabs for shoe sizes */
.tabs{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:14px}
.tab-btn{
  border:1.5px solid var(--teal);background:#fff;color:var(--teal-dark);font-weight:700;
  padding:8px 16px;border-radius:999px;cursor:pointer;font-size:.95rem;
}
.tab-btn.active{background:var(--teal);color:#fff}

/* FAQ */
.faq-item{background:var(--card);border:1px solid var(--border);border-radius:10px;padding:14px 16px;margin-bottom:10px}
.faq-item h3{font-size:1rem;color:var(--teal-deep);margin-bottom:5px}
.faq-item p{color:var(--muted);font-size:.95rem;margin:0}

/* Content pages */
.content-page p{margin-bottom:12px;max-width:760px}
.content-page h2{font-size:1.25rem;color:var(--teal-deep);margin:20px 0 8px}
.content-page ul{margin:0 0 12px 20px}
.contact-box{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:20px;box-shadow:var(--shadow);max-width:640px}
.contact-box .field input,.contact-box .field textarea{
  width:100%;padding:11px 12px;font-size:1rem;border:1.5px solid #bcd4cd;border-radius:9px;background:#fff;color:var(--ink);outline:none;font-family:inherit;
}
.btn{
  display:inline-block;background:var(--orange);color:#fff;font-weight:700;border:none;
  padding:11px 20px;border-radius:9px;cursor:pointer;font-size:1rem;
}
.btn:hover{background:#c2410c;text-decoration:none}

/* Footer */
.site-footer{background:var(--teal-deep);color:#cdeae3;margin-top:44px}
.footer-in{display:grid;grid-template-columns:1fr;gap:18px;padding:28px 0 10px}
@media(min-width:720px){.footer-in{grid-template-columns:1.4fr 1fr 1fr}}
.site-footer h4{color:#fff;font-size:1rem;margin-bottom:9px}
.site-footer ul{list-style:none}
.site-footer li{margin-bottom:5px}
.site-footer a{color:#cdeae3;font-size:.93rem}
.site-footer a:hover{color:#fff}
.footer-brand p{font-size:.92rem;color:#a7cfc6;max-width:340px}
.copyright{border-top:1px solid rgba(255,255,255,.15);padding:12px 0 18px;font-size:.85rem;color:#a7cfc6}
main{padding-bottom:10px}