/* Shared shell for the DayPorter free tools on simonbuilds.app.
   House style, DayPorter navy accent, light + dark. */
*{margin:0;padding:0;box-sizing:border-box}
:root{
  --bg:#f6f7f8;--card:#ffffff;--border:#e4e7ea;--hairline:#edeff1;
  --ink:#16191d;--body:#3f454c;--muted:#7d858e;
  --accent:#20486f;--accent-tx:#ffffff;
  --good:#1d9e75;--warn:#ba7517;--bad:#c93b3b;
  --r:16px;
  --fs:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
  --fm:ui-monospace,"SF Mono",SFMono-Regular,Menlo,Consolas,monospace;
}
@media (prefers-color-scheme: dark){
  :root{
    --bg:#101317;--card:#1a1f25;--border:#2b323b;--hairline:#232a32;
    --ink:#eef1f4;--body:#c3cad2;--muted:#8b949e;
    --accent:#7fa9d9;--accent-tx:#0d1218;
    --good:#4bbf95;--warn:#d69b3f;--bad:#e06b6b;
  }
}
html{scroll-behavior:smooth}
body{background:var(--bg);color:var(--ink);font-family:var(--fs);line-height:1.65;-webkit-font-smoothing:antialiased}
a{color:var(--accent);text-decoration:none}
a:hover{color:var(--ink)}
.wrap{max-width:980px;margin:0 auto;padding:0 24px}

nav{position:sticky;top:0;z-index:10;background:color-mix(in srgb,var(--bg) 88%,transparent);backdrop-filter:blur(12px);border-bottom:1px solid var(--border)}
nav .wrap{display:flex;align-items:center;justify-content:space-between;height:64px}
.logo{font-weight:700;font-size:1.05rem;color:var(--ink);letter-spacing:-.01em}
.logo em{color:var(--accent);font-style:normal}
.navlinks{display:flex;gap:24px;font-size:.9rem}
.navlinks a{color:var(--muted)}
.navlinks a:hover{color:var(--ink)}

header.hero{padding:52px 0 40px}
.eyebrow{font-size:.76rem;font-weight:700;letter-spacing:.12em;text-transform:uppercase;color:var(--accent);margin-bottom:12px}
h1{font-size:clamp(1.9rem,4.5vw,2.7rem);font-weight:750;letter-spacing:-.02em;line-height:1.15;margin-bottom:16px}
.lead{color:var(--body);font-size:1.08rem;max-width:660px}
section{padding:0 0 52px}
section.bd{padding:52px 0;border-top:1px solid var(--border)}
h2{font-size:1.5rem;font-weight:750;letter-spacing:-.01em;margin-bottom:8px}
h3{font-size:1rem;font-weight:650}
.sub{color:var(--body);margin-bottom:26px;max-width:680px}
.prose p{color:var(--body);max-width:700px;margin-bottom:16px}
.prose strong{color:var(--ink)}
.kicker{font-size:.67rem;font-weight:700;letter-spacing:.12em;text-transform:uppercase;color:var(--accent);margin-bottom:8px}

/* calculator shell */
.calc-shell{display:grid;grid-template-columns:1fr 340px;gap:24px;align-items:start}
.panel{background:var(--card);border:1px solid var(--border);border-radius:var(--r);padding:24px}
.field{padding:16px 0;border-bottom:1px solid var(--hairline)}
.field:first-child{padding-top:0}
.field:last-child{border-bottom:none;padding-bottom:0}
.field-row{display:grid;grid-template-columns:1fr 128px;gap:16px;align-items:center}
.field label{color:var(--ink);font-weight:600;font-size:.97rem;display:block}
.field label .unit{font-weight:400;color:var(--muted)}
.hint{display:block;font-weight:400;font-size:.82rem;color:var(--muted);line-height:1.45;margin-top:2px}
input[type=number]{
  width:100%;padding:10px 12px;font:inherit;font-size:1rem;text-align:right;
  color:var(--ink);background:var(--bg);border:1px solid var(--border);
  border-radius:10px;font-variant-numeric:tabular-nums;-moz-appearance:textfield;
}
input[type=number]::-webkit-outer-spin-button,input[type=number]::-webkit-inner-spin-button{-webkit-appearance:none;margin:0}
input[type=number]:focus{outline:2px solid var(--accent);outline-offset:-1px}
.presets{display:flex;flex-wrap:wrap;gap:8px;margin-top:12px}
.presets button{
  font:inherit;font-size:.82rem;padding:6px 13px;cursor:pointer;color:var(--body);
  background:var(--bg);border:1px solid var(--border);border-radius:99px;transition:.12s;
}
.presets button:hover{border-color:var(--accent);color:var(--accent)}
.presets button[aria-pressed=true]{background:var(--accent);border-color:var(--accent);color:var(--accent-tx)}

.out{position:sticky;top:88px}
.result{background:var(--accent);color:var(--accent-tx);border-radius:var(--r);padding:24px}
.result .big{font-size:2.5rem;font-weight:750;line-height:1.08;letter-spacing:-.025em;font-variant-numeric:tabular-nums}
.result .big small{font-size:1rem;font-weight:550;opacity:.85;letter-spacing:0}
.result .sub2{opacity:.88;font-size:.92rem;margin-top:6px;line-height:1.5}
.result.good{background:var(--good)}
.result.warn{background:var(--warn)}
.result.bad{background:var(--bad)}
.brk{width:100%;border-collapse:collapse;margin-top:18px}
.brk td{padding:9px 0;border-bottom:1px solid var(--hairline);font-size:.92rem;color:var(--body)}
.brk tr:last-child td{border-bottom:0;font-weight:700;color:var(--ink);padding-top:12px}
.brk td:last-child{text-align:right;font-variant-numeric:tabular-nums;color:var(--ink)}
.brk .tot{border-top:1px solid var(--border)}
.copy{
  width:100%;margin-top:16px;font:inherit;font-weight:650;font-size:.94rem;padding:12px 20px;
  cursor:pointer;color:var(--accent);background:var(--card);border:1px solid var(--accent);
  border-radius:12px;transition:.12s;
}
.copy:hover{background:var(--accent);color:var(--accent-tx)}
.cap{font-size:.82rem;color:var(--muted);margin-top:12px;line-height:1.55}

/* reference table */
.reftab{width:100%;border-collapse:collapse;background:var(--card);border:1px solid var(--border);border-radius:var(--r);overflow:hidden}
.reftab th{text-align:left;font-size:.78rem;font-weight:700;letter-spacing:.06em;text-transform:uppercase;color:var(--muted);padding:14px 18px;border-bottom:1px solid var(--border)}
.reftab td{padding:12px 18px;border-bottom:1px solid var(--hairline);font-size:.93rem;color:var(--body)}
.reftab tr:last-child td{border-bottom:none}
.reftab td.n{text-align:right;font-variant-numeric:tabular-nums;color:var(--ink);font-weight:600}
.scrollx{overflow-x:auto}

.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:16px}
.card{background:var(--card);border:1px solid var(--border);border-radius:var(--r);padding:22px}
.card h3{margin-bottom:8px}
.card p{color:var(--body);font-size:.92rem}
.faq details{background:var(--card);border:1px solid var(--border);border-radius:var(--r);padding:18px 22px;margin-bottom:12px}
.faq summary{font-weight:650;cursor:pointer;color:var(--ink)}
.faq p{color:var(--body);font-size:.94rem;margin-top:10px}
.ctabox{background:var(--card);border:1px solid var(--accent);border-radius:var(--r);padding:26px}
.btn{display:inline-block;font-weight:650;font-size:.95rem;background:var(--accent);color:var(--accent-tx);border-radius:12px;padding:13px 26px;transition:opacity .15s;margin-top:8px}
.btn:hover{opacity:.86;color:var(--accent-tx)}

/* tool cross-links */
.tools{display:grid;grid-template-columns:repeat(auto-fit,minmax(230px,1fr));gap:14px}
.tool{background:var(--card);border:1px solid var(--border);border-radius:var(--r);padding:20px;display:block}
.tool:hover{border-color:var(--accent)}
.tool h3{color:var(--ink);margin-bottom:6px}
.tool p{color:var(--body);font-size:.88rem}
.tool[aria-current=page]{border-color:var(--accent);background:color-mix(in srgb,var(--accent) 8%,var(--card))}

footer{padding:36px 0 52px;color:var(--muted);font-size:.85rem;border-top:1px solid var(--border)}
footer .wrap{display:flex;justify-content:space-between;flex-wrap:wrap;gap:16px}
footer a{color:var(--body)}

/* --- narrow screens -------------------------------------------------------
   Contractors use these on a phone, in a truck. Two things have to hold:
   the answer stays on screen while you edit the inputs, and no label or
   number ever gets squeezed into a two-word-per-line column. */
@media(max-width:860px){
  .calc-shell{grid-template-columns:1fr}
  /* result above the inputs and pinned under the nav, so changing a number
     always shows the number changing */
  .out{order:-1;position:static}
  .result{position:sticky;top:72px;z-index:5;box-shadow:0 8px 24px rgba(0,0,0,.16)}
}
@media(max-width:560px){
  .wrap{padding:0 18px}
  header.hero{padding:36px 0 28px}
  section.bd{padding:40px 0}
  .panel{padding:20px}
  /* stack label over a full-width input — 128px next to a wrapping label is
     what produced "Cleanable square / feet" */
  .field-row{grid-template-columns:1fr;gap:10px}
  .field-row input[type=number]{font-size:1.05rem;padding:12px 14px}
  .result{padding:20px}
  .result .big{font-size:2.1rem}
  .brk td{font-size:.88rem}
  .tools{grid-template-columns:1fr}
}