/*
Theme Name: TrussBuilder Calculator
Theme URI: https://example.com/
Author: Custom
Description: Calculator-focused WordPress theme for roof truss, rafter, span, load and cost calculators. Includes built-in calculator shortcode, auto-created pages, menus and internal linking.
Version: 1.0.0
License: GPL-2.0-or-later
Text Domain: trussbuilder
*/

:root{
  --navy:#0f2a43; --blue:#1d6fd1; --blue-d:#14529e; --orange:#f08a24; --bg:#f4f7fb; --card:#fff;
  --text:#1c2733; --muted:#5b6b7c; --line:#dde5ee; --radius:14px; --shadow:0 6px 24px rgba(15,42,67,.08);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:-apple-system,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;color:var(--text);background:var(--bg);line-height:1.65;font-size:17px}
a{color:var(--blue);text-decoration:none}
a:hover{text-decoration:underline}
img{max-width:100%;height:auto}
.container{max-width:1160px;margin:0 auto;padding:0 20px}
.narrow{max-width:860px}

.screen-reader-text{position:absolute;left:-9999px}
.screen-reader-text:focus{left:10px;top:10px;background:#fff;padding:8px 12px;z-index:100}

/* Header */
.site-header{background:var(--navy);position:sticky;top:0;z-index:50;box-shadow:0 2px 12px rgba(0,0,0,.2)}
.header-inner{display:flex;align-items:center;justify-content:space-between;min-height:68px;gap:16px}
.logo{color:#fff;font-weight:800;font-size:20px;letter-spacing:.2px}
.logo span{color:var(--orange)}
.logo:hover{text-decoration:none}
.main-nav ul{list-style:none;margin:0;padding:0;display:flex;gap:4px}
.main-nav li{position:relative}
.main-nav a{display:block;color:#dbe7f5;padding:24px 12px;font-size:15px;font-weight:600}
.main-nav a:hover{color:#fff;text-decoration:none}
.main-nav .sub-menu{display:none;position:absolute;top:100%;left:0;min-width:240px;background:#fff;border-radius:0 0 12px 12px;box-shadow:var(--shadow);padding:8px 0;flex-direction:column;gap:0}
.main-nav li:hover>.sub-menu,.main-nav li:focus-within>.sub-menu{display:flex}
.main-nav .sub-menu a{color:var(--text);padding:9px 18px;font-weight:500}
.main-nav .sub-menu a:hover{background:var(--bg);color:var(--blue)}
.menu-toggle{display:none;background:none;border:1px solid #3b5878;color:#fff;border-radius:8px;padding:8px 12px;font-size:15px}
.btn{display:inline-block;background:var(--orange);color:#fff;border:0;border-radius:10px;padding:13px 24px;font-weight:700;font-size:16px;cursor:pointer}
.btn:hover{filter:brightness(1.07);text-decoration:none}
.btn-ghost{background:transparent;border:2px solid var(--blue);color:var(--blue)}
.btn-blue{background:var(--blue)}

/* Hero */
.hero{background:linear-gradient(135deg,var(--navy),#1b4a7a);color:#fff;padding:64px 0 56px;text-align:center}
.hero h1{font-size:clamp(30px,5vw,48px);margin:0 0 14px;line-height:1.15}
.hero p{max-width:760px;margin:0 auto 22px;color:#cfe0f3;font-size:18px}
.badge{display:inline-block;background:rgba(255,255,255,.12);padding:6px 14px;border-radius:99px;font-size:14px;margin-bottom:16px}
.stats{display:flex;flex-wrap:wrap;gap:12px;justify-content:center;margin-top:28px}
.stats div{background:rgba(255,255,255,.1);border-radius:12px;padding:12px 22px}
.stats b{display:block;font-size:22px;color:var(--orange)}
.page-hero{background:linear-gradient(135deg,var(--navy),#1b4a7a);color:#fff;padding:40px 0}
.page-hero h1{margin:0 0 8px;font-size:clamp(26px,4vw,38px)}
.page-hero p{margin:0;color:#cfe0f3}
.crumbs{font-size:14px;color:#9fb8d3;margin-bottom:8px}
.crumbs a{color:#bcd3ec}

/* Sections */
section.block{padding:54px 0}
section.alt{background:#fff}
h2{font-size:clamp(24px,3.2vw,32px);line-height:1.25;margin:0 0 14px;color:var(--navy)}
h3{font-size:20px;margin:22px 0 8px;color:var(--navy)}
.eyebrow{color:var(--orange);font-weight:700;text-transform:uppercase;font-size:13px;letter-spacing:1px}
.grid{display:grid;gap:18px}
.g2{grid-template-columns:repeat(2,1fr)}.g3{grid-template-columns:repeat(3,1fr)}.g4{grid-template-columns:repeat(4,1fr)}
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:22px;box-shadow:var(--shadow)}
.card h3{margin-top:0}
a.card{color:var(--text);display:block;transition:transform .15s,border-color .15s}
a.card:hover{transform:translateY(-3px);border-color:var(--blue);text-decoration:none}
.card .more{color:var(--blue);font-weight:700;font-size:15px}
.content{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:34px;box-shadow:var(--shadow)}
.content ul,.content ol{padding-left:22px}
.content table{border-collapse:collapse;width:100%;margin:16px 0;font-size:16px}
.content th,.content td{border:1px solid var(--line);padding:9px 12px;text-align:left}
.content th{background:var(--bg)}
.formula{background:var(--bg);border-left:4px solid var(--blue);padding:12px 16px;border-radius:8px;font-family:Consolas,monospace;margin:14px 0;overflow-x:auto}
.note{background:#fff7ec;border:1px solid #f6d6a8;border-radius:10px;padding:14px 18px;margin:18px 0}
.related{margin-top:30px}
.related ul{list-style:none;padding:0;display:flex;flex-wrap:wrap;gap:10px}
.related a{display:block;background:#fff;border:1px solid var(--line);padding:8px 14px;border-radius:99px;font-size:15px}

/* Calculator */
.calc{background:#fff;border:1px solid var(--line);border-radius:18px;box-shadow:var(--shadow);overflow:hidden}
.calc-head{background:var(--navy);color:#fff;padding:16px 22px;display:flex;justify-content:space-between;flex-wrap:wrap;gap:10px;align-items:center}
.calc-head h2{color:#fff;margin:0;font-size:21px}
.unit-toggle button{background:#26466a;color:#fff;border:0;padding:8px 14px;cursor:pointer;font-weight:600}
.unit-toggle button:first-child{border-radius:8px 0 0 8px}.unit-toggle button:last-child{border-radius:0 8px 8px 0}
.unit-toggle button.on{background:var(--orange)}
.calc-body{display:grid;grid-template-columns:1.1fr .9fr}
.calc-form{padding:22px;border-right:1px solid var(--line)}
.calc-out{padding:22px;background:#fafcff}
.fields{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.field label{display:block;font-size:14px;font-weight:700;margin-bottom:4px;color:var(--navy)}
.field small{display:block;color:var(--muted);font-size:12.5px;margin-top:3px;line-height:1.35}
.field input,.field select{width:100%;padding:10px 11px;border:1px solid #c5d3e2;border-radius:9px;font-size:16px;background:#fff;font-family:inherit}
.field input:focus,.field select:focus{outline:2px solid var(--blue);border-color:var(--blue)}
.row{display:flex;gap:6px}.row input{flex:1;min-width:0}.row select{width:76px}
.actions{display:flex;gap:10px;flex-wrap:wrap;margin-top:18px}
.actions button{padding:11px 18px;border-radius:9px;font-weight:700;border:0;cursor:pointer;font-size:15px}
.a-calc{background:var(--orange);color:#fff}.a-oth{background:#e7eef7;color:var(--navy)}
.examples{margin-bottom:14px;font-size:14px}
.examples button{border:1px solid var(--line);background:#fff;border-radius:99px;padding:5px 12px;margin:0 4px 4px 0;cursor:pointer;font-size:13.5px}
.diagram{background:#fff;border:1px solid var(--line);border-radius:12px;padding:8px;margin-bottom:14px}
.diagram svg{width:100%;height:auto;display:block}
.results{display:grid;grid-template-columns:1fr 1fr;gap:8px}
.res{background:#fff;border:1px solid var(--line);border-radius:10px;padding:9px 12px}
.res span{display:block;font-size:12.5px;color:var(--muted);text-transform:uppercase;letter-spacing:.4px}
.res b{font-size:18px;color:var(--navy)}
.res.hl{border-color:var(--orange);background:#fff8ef}
.cost-box{margin-top:14px;background:var(--navy);color:#fff;border-radius:12px;padding:14px 16px}
.cost-box b{font-size:24px;color:var(--orange)}
.cost-box label{display:block;font-size:14px;margin-top:6px;color:#cfe0f3}

/* FAQ */
.faq details{background:#fff;border:1px solid var(--line);border-radius:10px;margin-bottom:10px;padding:14px 18px}
.faq summary{cursor:pointer;font-weight:700;color:var(--navy)}
.faq details p{margin:10px 0 0}

/* Blog */
.post-meta{color:var(--muted);font-size:14px;margin-bottom:6px}

/* Footer */
.site-footer{background:var(--navy);color:#b8cbe0;padding:48px 0 22px;margin-top:40px}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:28px}
.site-footer h4{color:#fff;margin:0 0 10px}
.site-footer ul{list-style:none;margin:0;padding:0}
.site-footer li{margin:6px 0}
.site-footer a{color:#b8cbe0}
.copy{border-top:1px solid #29496b;margin-top:28px;padding-top:16px;font-size:14px;text-align:center}

@media(max-width:900px){
  .g3,.g4{grid-template-columns:1fr 1fr}
  .calc-body{grid-template-columns:1fr}.calc-form{border-right:0;border-bottom:1px solid var(--line)}
  .footer-grid{grid-template-columns:1fr 1fr}
  .menu-toggle{display:block}
  .main-nav{display:none;position:absolute;left:0;right:0;top:68px;background:var(--navy);max-height:80vh;overflow:auto}
  .main-nav.open{display:block}
  .main-nav ul{flex-direction:column;padding:8px 20px 16px}
  .main-nav a{padding:11px 0}
  .main-nav .sub-menu{display:flex;position:static;box-shadow:none;background:transparent;padding:0 0 0 14px}
  .main-nav .sub-menu a{color:#b8cbe0}
}
@media(max-width:600px){
  .g2,.g3,.g4,.fields,.results{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr}
  .content{padding:22px}
}
@media print{
  .site-header,.site-footer,.calc-form,.hero,.page-hero,.related,.actions{display:none!important}
  .calc-body{display:block}
}