/* ============================================================
   SparkBench, shared styles
   Light "engineering pad" theme. Edit the :root tokens to rebrand.
   ============================================================ */
:root{
  /* Brand accent (Signal Amber). Swap these four to re-theme the whole site. */
  --accent:#F5A700;
  --accent-strong:#B87700;
  --accent-soft:#FBEFD3;
  --on-accent:#1A1300;
  /* Warm neutrals */
  --bg:#F5F4F0;
  --surface:#FFFFFF;
  --surface-2:#F8F6F0;
  --ink:#181A20;
  --ink-2:#3A3E48;
  --ink-3:#6A6F7B;
  --line:#E6E3DB;
  --line-2:#DAD7CD;
  /* Interactive text (readable amber); keeps the old token names in use */
  --primary:#B87700;
  --primary-dk:#8F5C00;
  /* Semantic */
  --ok:#17A55C;
  --ok-bg:#E3F5EC;
  --warn:#E8A400;
  --warn-bg:#FBF0D6;
  --bad:#D64545;
  --bad-bg:#FAE4E4;
  /* Type: Archivo for language, IBM Plex Mono for data */
  --display:'Archivo',system-ui,sans-serif;
  --sans:'Archivo',system-ui,sans-serif;
  --mono:'IBM Plex Mono',ui-monospace,monospace;
  --maxw:1080px;
  --radius:10px;
  --radius-lg:16px;
  --shadow:0 1px 0 rgba(0,0,0,.02),0 14px 34px -20px rgba(24,26,32,.30);
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:var(--sans);color:var(--ink);background:var(--bg);line-height:1.55;
  -webkit-font-smoothing:antialiased;
  background-image:
    linear-gradient(rgba(24,26,32,.035) 1px,transparent 1px),
    linear-gradient(90deg,rgba(24,26,32,.035) 1px,transparent 1px);
  background-size:34px 34px;
}
a{color:var(--primary);text-decoration:none}
a:hover{text-decoration:underline}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 22px}
.mono{font-family:var(--mono)}

/* ---- header / nav ---- */
header.site{position:sticky;top:0;z-index:40;background:rgba(245,244,239,.86);backdrop-filter:saturate(140%) blur(10px);border-bottom:1px solid var(--line)}
.nav{display:flex;align-items:center;justify-content:space-between;gap:10px 16px;min-height:62px;padding:8px 0;flex-wrap:wrap}
.brand{display:flex;align-items:center;gap:9px;font-family:var(--display);font-weight:800;font-size:20px;color:var(--ink);letter-spacing:-.02em}
.brand:hover{text-decoration:none}
.brand .bolt{width:24px;height:24px;flex:none}
.navlinks{display:flex;gap:6px;flex-wrap:wrap;justify-content:flex-end}
.navlinks a{font-size:13.5px;font-weight:500;color:var(--ink-2);padding:7px 11px;border-radius:8px}
.navlinks a:hover{background:rgba(20,30,60,.05);color:var(--ink);text-decoration:none}
.navlinks a.active{background:var(--ink);color:#fff}
.navlinks a.nav-pro{background:var(--accent);color:var(--ink);font-weight:700}
.navlinks a.nav-pro:hover{background:var(--accent-strong);color:#fff}
.navtoggle{display:none;margin-left:auto;align-items:center;justify-content:center;width:42px;height:42px;border:1px solid var(--line);border-radius:9px;background:var(--surface);color:var(--ink);cursor:pointer}
.navtoggle:hover{background:var(--surface-2)}
@media (max-width:720px){
	.pronav .navtoggle{display:inline-flex}
	.pronav .navlinks{display:none;flex-basis:100%;flex-direction:column;align-items:stretch;gap:2px;margin-top:8px}
	.pronav.open .navlinks{display:flex}
	.pronav .navlinks a{padding:11px 12px;border-radius:8px}
}
.statustag{display:inline-block;font-family:var(--mono);font-size:11px;font-weight:700;padding:2px 8px;border-radius:6px;text-transform:uppercase;letter-spacing:.03em}
.statustag.pass{background:#e3f3e7;color:#1f7a34}
.statustag.fail{background:#fbe4e3;color:#c22a26}
.statustag.warn{background:#fbf1d8;color:#9a7400}
.statustag.nodata{background:#eceae1;color:#565c68}
.result-summary{display:flex;flex-wrap:wrap;gap:22px;margin:2px 0 14px}
.result-summary .rs{font-family:var(--mono);font-size:15px;color:var(--ink)}
.result-summary .rs b{display:block;font-family:var(--sans);font-size:11px;color:var(--ink-3);font-weight:600;text-transform:uppercase;letter-spacing:.04em;margin-bottom:2px}
.check{display:flex;gap:14px;align-items:flex-start;padding:11px 0;border-bottom:1px solid var(--line)}
.check:last-child{border-bottom:0}
.check .ck{min-width:150px;font-weight:600;font-size:14px}
.check .cmsg{font-size:13.5px;color:var(--ink-2)}
.check .conf{font-family:var(--mono);font-size:11px;color:var(--ink-3)}

/* ---- dropdown nav ---- */
.dropdown{position:relative}
.dropdown>summary{list-style:none;cursor:pointer;display:inline-flex;align-items:center;gap:7px;font-size:13.5px;font-weight:500;color:var(--ink-2);padding:7px 11px;border-radius:8px}
.dropdown>summary::-webkit-details-marker{display:none}
.dropdown>summary::after{content:"";width:6px;height:6px;border-right:2px solid currentColor;border-bottom:2px solid currentColor;transform:rotate(45deg) translateY(-2px);transition:transform .15s}
.dropdown[open]>summary::after{transform:rotate(-135deg) translateY(-1px)}
.dropdown>summary:hover{background:rgba(20,30,60,.05);color:var(--ink)}
.dropdown>summary.active{color:var(--ink);font-weight:600}
.menu{position:absolute;right:0;top:calc(100% + 8px);background:var(--surface);border:1px solid var(--line-2);border-radius:11px;box-shadow:var(--shadow);padding:6px;min-width:232px;display:flex;flex-direction:column;gap:1px;z-index:60}
.menu a{font-size:14px;font-weight:500;color:var(--ink-2);padding:9px 12px;border-radius:8px;white-space:nowrap}
.menu a:hover{background:rgba(20,30,60,.05);color:var(--ink);text-decoration:none}
.menu a.active{background:var(--ink);color:#fff}

/* ---- hero / page head ---- */
.pagehead{padding:46px 0 26px}
.kick{font-family:var(--mono);font-size:12px;letter-spacing:.16em;text-transform:uppercase;color:var(--primary);font-weight:600}
h1{font-family:var(--display);font-weight:800;letter-spacing:-.03em;line-height:1.02;font-size:clamp(32px,4.6vw,56px);margin:12px 0 0;text-wrap:balance}
.pagehead p.lede{color:var(--ink-2);font-size:17px;margin-top:14px;max-width:640px}
.reviewed{font-family:var(--mono);font-size:11.5px;letter-spacing:.06em;color:var(--ink-3);margin-top:12px}
.reviewed time{color:var(--ink-2)}

/* ---- calculator card ---- */
.calc{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-lg);box-shadow:var(--shadow);overflow:hidden;margin:8px 0 30px}
.calc .calc-body{padding:24px}
.fieldgrid{display:grid;grid-template-columns:1fr 1fr;gap:16px 18px}
.field{display:flex;flex-direction:column;gap:6px}
.field.full{grid-column:1/-1}
.field label{font-size:13px;font-weight:600;color:var(--ink);display:flex;align-items:center;gap:7px}
.field .hint{font-family:var(--mono);font-size:11px;color:var(--ink-3);font-weight:400}
.field input,.field select{
  font-family:var(--mono);font-size:16px;color:var(--ink);background:var(--surface-2);
  border:1px solid var(--line-2);border-radius:9px;padding:11px 12px;width:100%;transition:border-color .15s,box-shadow .15s;
}
.field input:focus,.field select:focus{outline:0;border-color:var(--primary);box-shadow:0 0 0 3px rgba(20,82,240,.14)}
.seg{display:flex;border:1px solid var(--line-2);border-radius:9px;overflow:hidden;background:var(--surface-2)}
.seg button{flex:1;font-family:var(--sans);font-size:13.5px;font-weight:600;padding:10px;border:0;background:transparent;color:var(--ink-2);cursor:pointer}
.seg button.on{background:var(--ink);color:#fff}

/* ---- readout ---- */
.readout{background:var(--ink);color:#fff;padding:22px 24px;display:flex;flex-wrap:wrap;gap:22px;align-items:flex-end;justify-content:space-between}
.readout .big{display:flex;flex-direction:column;gap:3px}
.readout .big .rl{font-family:var(--mono);font-size:11px;letter-spacing:.14em;text-transform:uppercase;color:#9aa3b5}
.readout .big .rv{font-family:var(--mono);font-weight:600;font-size:clamp(30px,5vw,42px);line-height:1;color:var(--accent)}
.readout .big .rv small{font-size:.5em;color:#cfd5e0;font-weight:500;margin-left:4px}
.readout .sub{display:flex;gap:24px;flex-wrap:wrap}
.readout .sub .s .l{font-family:var(--mono);font-size:10.5px;letter-spacing:.1em;text-transform:uppercase;color:#9aa3b5}
.readout .sub .s .v{font-family:var(--mono);font-size:18px;font-weight:600;color:#fff;margin-top:2px}
.verdict{display:inline-flex;align-items:center;gap:8px;font-weight:700;font-size:14px;padding:7px 13px;border-radius:8px}
.verdict.pass{background:var(--ok-bg);color:var(--ok)}
.verdict.fail{background:var(--bad-bg);color:var(--bad)}
.verdict .dot{width:9px;height:9px;border-radius:50%;background:currentColor}

/* ---- luminaire layout diagram ---- */
.layout{background:var(--surface);border:1px solid var(--line-2);border-radius:var(--radius);box-shadow:var(--shadow);padding:20px 22px;margin:0 0 30px}
.layout-head{display:flex;justify-content:space-between;align-items:center;gap:12px;flex-wrap:wrap;margin-bottom:8px}
.layout-head .rl{font-family:var(--mono);font-size:11px;letter-spacing:.14em;text-transform:uppercase;color:var(--ink-3)}
.layout-meta{display:block;font-family:var(--mono);font-size:12.5px;color:var(--ink-2);margin-bottom:12px}
.seg.seg-sm{width:auto;flex:none}
.seg.seg-sm button{flex:none;font-size:12px;padding:6px 13px}
.layout-stage{display:flex;justify-content:center}
.layout-stage svg{width:100%;max-width:360px;height:auto;display:block}
.layout-note{font-size:12.5px;color:var(--ink-3);margin:14px 0 0;text-align:center}

/* ---- content / SEO blocks ---- */
.prose{max-width:720px}
.prose h2{font-family:var(--display);font-weight:700;font-size:25px;letter-spacing:-.02em;margin:38px 0 12px}
.prose h3{font-family:var(--display);font-weight:700;font-size:18px;margin:24px 0 8px}
.prose p{color:var(--ink-2);margin:0 0 14px}
.prose code{font-family:var(--mono);font-size:14px;background:#eceae1;padding:2px 6px;border-radius:5px;color:var(--ink)}
.formula{font-family:var(--mono);font-size:15px;background:var(--surface);border:1px solid var(--line-2);border-left:3px solid var(--primary);border-radius:9px;padding:14px 16px;margin:10px 0 18px;color:var(--ink);overflow-x:auto}
.faq details{border:1px solid var(--line);border-radius:10px;background:var(--surface);margin-bottom:10px;overflow:hidden}
.faq summary{cursor:pointer;padding:14px 16px;font-weight:600;list-style:none;display:flex;justify-content:space-between;align-items:center}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";font-family:var(--mono);color:var(--primary);font-size:20px}
.faq details[open] summary::after{content:"\2212"}
.faq details .a{padding:0 16px 16px;color:var(--ink-2)}

/* ---- reference tables ---- */
.table-wrap{overflow-x:auto;margin:10px 0 24px}
.reftable{width:100%;border-collapse:collapse;font-size:14.5px;min-width:520px}
.reftable th,.reftable td{text-align:left;padding:10px 14px;border-bottom:1px solid var(--line);vertical-align:top}
.reftable thead th{font-family:var(--mono);font-size:11px;letter-spacing:.08em;text-transform:uppercase;color:var(--ink-3);font-weight:600;border-bottom:1px solid var(--line-2)}
.reftable td.bs{font-family:var(--mono);font-weight:600;color:var(--ink);white-space:nowrap}
.reftable tbody tr:hover{background:var(--surface-2)}
.reftable .dev{font-weight:600;color:var(--ink)}
.reftable .obs{font-family:var(--mono);font-size:10.5px;letter-spacing:.05em;text-transform:uppercase;color:var(--bad);margin-left:6px}

/* ---- related grid / home cards ---- */
.cards{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}
.card{display:block;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-lg);padding:22px;transition:transform .18s,border-color .18s,box-shadow .18s}
.card:hover{transform:translateY(-3px);border-color:var(--accent);box-shadow:var(--shadow);text-decoration:none}
.card .ct{font-family:var(--mono);font-size:11px;letter-spacing:.1em;text-transform:uppercase;color:var(--primary);font-weight:600}
.card h3{font-family:var(--display);font-weight:700;font-size:19px;color:var(--ink);margin:6px 0 6px;letter-spacing:-.01em}
.card p{color:var(--ink-2);font-size:14px}
.card.soon{opacity:.6;pointer-events:none}

/* ---- action button ---- */
.calc-actions{display:flex;align-items:center;gap:14px;flex-wrap:wrap;margin:0 0 30px}
.btn{font-family:var(--sans);font-size:14px;font-weight:600;color:#fff;background:var(--ink);border:0;border-radius:var(--radius);padding:11px 18px;cursor:pointer;transition:background .15s,border-color .15s}
.btn:hover{background:#000}
.btn.accent{background:var(--accent);color:var(--on-accent)}
.btn.accent:hover{background:var(--accent-strong);color:#fff}
.calc-actions-note{font-family:var(--mono);font-size:11.5px;color:var(--ink-3)}

/* ---- ad slot ---- */
.ad-slot{display:flex;align-items:center;justify-content:center;margin:26px auto;background:repeating-linear-gradient(45deg,#efeee7,#efeee7 10px,#f4f3ec 10px,#f4f3ec 20px);border:1px dashed var(--line-2);border-radius:10px;color:var(--ink-3);font-family:var(--mono);font-size:11px;letter-spacing:.14em;text-transform:uppercase}
.ad-slot.leaderboard{min-height:90px;max-width:728px}
.ad-slot.rect{min-height:250px;max-width:336px}
.ad-ez{margin:26px auto;display:flex;align-items:center;justify-content:center;min-height:90px}
.ad-ez.rect{min-height:250px}
.house-ad[hidden]{display:none}
.house-ad img{display:block;max-width:100%;height:auto;border-radius:8px}

/* ---- disclaimer / footer ---- */
.disclaimer{background:var(--accent-soft);border:1px solid var(--accent);border-radius:var(--radius-lg);padding:16px 18px;margin:30px 0;font-size:13.5px;color:var(--ink-2)}
.disclaimer b{color:var(--accent-strong)}
footer.site{border-top:1px solid var(--line);margin-top:50px;padding:34px 0;background:var(--surface-2)}
.foot{display:flex;flex-wrap:wrap;gap:18px;justify-content:space-between;align-items:center}
.foot .links{display:flex;gap:18px;flex-wrap:wrap;font-size:13px}
.foot .links a{color:var(--ink-2)}
.foot .copy{font-family:var(--mono);font-size:11.5px;color:var(--ink-3);width:100%;border-top:1px solid var(--line);padding-top:18px;margin-top:6px}
.foot .owner{font-size:12px;color:var(--ink-3);width:100%}
.foot .owner a{color:var(--ink-2);text-decoration:underline}

section{padding:6px 0}
.section-pad{padding:26px 0}
.pro-band{background:var(--accent-soft);border:1px solid var(--line);border-radius:16px;padding:28px;margin:26px 0}
.pro-band h2{margin:4px 0 8px}
.pro-band .price{font-family:var(--mono);font-size:12.5px;color:var(--ink-2);margin:16px 0}
a.btn{display:inline-block;text-decoration:none}
.btn.ghost{background:transparent;color:var(--ink);border:1px solid var(--line)}
.btn.ghost:hover{background:var(--surface-2);color:var(--ink)}
.cmp th.c,.cmp td.c{text-align:center;width:14%}
.cmp .yes{color:#1f7a34;font-weight:700}
.cmp .no{color:var(--ink-3)}
.owner-note{font-size:12.5px;color:var(--ink-3);margin:22px 0 8px}
.owner-note a{color:var(--ink-2);text-decoration:underline}
.certsteps{display:flex;flex-wrap:wrap;gap:6px;margin:0 0 20px}
.certsteps .step{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;color:var(--ink-3);padding:8px 13px;border:1px solid var(--line);border-radius:9px;background:var(--surface)}
.certsteps .step:hover{background:var(--surface-2);text-decoration:none;color:var(--ink-2)}
.certsteps .step .stepno{display:inline-flex;align-items:center;justify-content:center;width:20px;height:20px;border-radius:50%;background:var(--surface-2);color:var(--ink-2);font-size:12px;font-weight:700}
.certsteps .step.current{border-color:var(--accent);color:var(--ink)}
.certsteps .step.current .stepno{background:var(--accent);color:var(--ink)}
.certsteps .step.done .stepno{background:#e3f3e7;color:#1f7a34}
.obs-photos{display:flex;flex-wrap:wrap;gap:8px;margin-top:6px}
.obs-photos figure{margin:0;width:96px}
.obs-photos img{width:96px;height:72px;object-fit:cover;border-radius:6px;border:1px solid var(--line)}
.obs-photos .linkbtn{font-size:11px}
.readiness{list-style:none;padding:0;margin:0}
.readiness li{display:flex;gap:10px;align-items:baseline;padding:7px 0;border-bottom:1px solid var(--line);font-size:14px}
.readiness li:last-child{border-bottom:0}
.readiness .ok{color:#1f7a34;font-weight:700}
.readiness .no{color:#c22a26;font-weight:700}

@media(max-width:680px){
  .fieldgrid,.cards{grid-template-columns:1fr}
  .readout{flex-direction:column;align-items:flex-start}
}