/* ============================================================
   Penguin Plumbing & Drain — Design System
   Direction: technical drawing / blueprint. Drafting paper,
   hairline rules, corner tick marks, hot-red / cold-blue coding.
   Type: Zilla Slab (display) / Karla (body) / JetBrains Mono (data)
   ============================================================ */

:root{
  --ink:#0F2440;
  --blue:#1B4E8C;
  --blue-2:#2E6FB7;
  --cyan:#6FB6DC;
  --hot:#C43B2E;
  --hot-d:#96291F;
  --cold:#1B6FA8;
  --ochre:#E0A32B;
  --paper:#EEF1F5;
  --paper-2:#F7F9FB;
  --white:#fff;
  --rule:#C3D0DC;
  --rule-2:#DCE4EB;
  --text:#17222E;
  --muted:#5A6B7B;
  --maxw:1180px;
}

*,*::before,*::after{ box-sizing:border-box; }
html{ scroll-behavior:smooth; }
body{
  margin:0; background:var(--paper-2); color:var(--text);
  font-family:'Karla',-apple-system,'Segoe UI',sans-serif;
  font-size:17px; line-height:1.65; -webkit-font-smoothing:antialiased;
}
img{ max-width:100%; display:block; }
svg{ width:1.4em; height:1.4em; flex-shrink:0; }
a{ color:var(--blue); text-decoration:none; }
a:hover{ text-decoration:underline; }
:focus-visible{ outline:3px solid var(--ochre); outline-offset:2px; }
@media (prefers-reduced-motion:reduce){ html{scroll-behavior:auto} *{animation-duration:.001ms!important;transition-duration:.001ms!important} }

h1,h2,h3,h4{ font-family:'Zilla Slab',Georgia,serif; font-weight:600; color:var(--ink); line-height:1.14; margin:0 0 .5em; }
h1{ font-size:clamp(2.2rem,3.2vw + 1rem,3.5rem); font-weight:700; letter-spacing:-.015em; }
h2{ font-size:clamp(1.7rem,1.7vw + 1rem,2.5rem); }
h3{ font-size:1.26rem; }
h4{ font-size:1.03rem; }
p{ margin:0 0 1em; }
ul,ol{ padding-left:1.15em; }

.container{ max-width:var(--maxw); margin:0 auto; padding:0 26px; }
section{ padding:74px 0; }
.lede{ font-size:1.13rem; color:var(--muted); }
.mono{ font-family:'JetBrains Mono',monospace; }
.center{ text-align:center; }

/* ---------- drafting paper grid ---------- */
.grid-bg{
  background-color:var(--paper);
  background-image:
    linear-gradient(var(--rule-2) 1px, transparent 1px),
    linear-gradient(90deg, var(--rule-2) 1px, transparent 1px);
  background-size:38px 38px;
}
.dark{ background:var(--ink); color:#C3D3E3; }
.dark h2,.dark h3,.dark h4{ color:var(--white); }
.dark .lede{ color:#93A9C0; }
.dark-grid{
  background-color:var(--ink);
  background-image:
    linear-gradient(rgba(111,182,220,.11) 1px, transparent 1px),
    linear-gradient(90deg, rgba(111,182,220,.11) 1px, transparent 1px);
  background-size:38px 38px;
}

/* ---------- FIG label: the structural device ---------- */
.fig{
  font-family:'JetBrains Mono',monospace; font-size:.73rem; font-weight:500;
  letter-spacing:.16em; text-transform:uppercase; color:var(--blue-2);
  display:inline-flex; align-items:center; gap:10px; margin-bottom:14px;
}
.fig::before{ content:""; width:26px; height:2px; background:var(--hot); flex:none; }
.dark .fig{ color:var(--cyan); }
.shead{ max-width:730px; margin-bottom:44px; }
.shead.center{ margin-left:auto; margin-right:auto; text-align:center; }
.shead.center .fig{ justify-content:center; }

/* ---------- corner tick marks: signature detail ---------- */
.tick{ position:relative; }
.tick::before,.tick::after{
  content:""; position:absolute; width:13px; height:13px; pointer-events:none;
}
.tick::before{ top:-1px; left:-1px; border-top:2px solid var(--hot); border-left:2px solid var(--hot); }
.tick::after{ bottom:-1px; right:-1px; border-bottom:2px solid var(--cold); border-right:2px solid var(--cold); }

/* ---------- buttons ---------- */
.btn{
  display:inline-flex; align-items:center; justify-content:center; gap:9px;
  font-family:'Karla',sans-serif; font-weight:700; font-size:.98rem; letter-spacing:.01em;
  padding:14px 26px; border:2px solid var(--ink); background:var(--ink); color:var(--white);
  border-radius:3px; cursor:pointer; transition:background .14s ease,color .14s ease;
}
.btn:hover{ text-decoration:none; background:var(--blue); border-color:var(--blue); }
.btn-hot{ background:var(--hot); border-color:var(--hot); }
.btn-hot:hover{ background:var(--hot-d); border-color:var(--hot-d); }
.btn-out{ background:transparent; color:var(--ink); }
.btn-out:hover{ background:var(--ink); color:var(--white); }
.btn-onblue{ background:var(--white); color:var(--ink); border-color:var(--white); }
.btn-onblue:hover{ background:var(--cyan); border-color:var(--cyan); color:var(--ink); }
.btn-ghost-l{ background:transparent; color:var(--white); border-color:rgba(255,255,255,.5); }
.btn-ghost-l:hover{ background:rgba(255,255,255,.12); border-color:var(--white); }
.btn-sm{ padding:9px 16px; font-size:.85rem; }
.btn-block{ width:100%; }

/* ---------- topbar ---------- */
.topbar{ background:var(--ink); color:#A9BFD4; font-family:'JetBrains Mono',monospace; font-size:.75rem; }
.topbar .container{ display:flex; justify-content:space-between; gap:14px; flex-wrap:wrap; padding-top:9px; padding-bottom:9px; }
.topbar a{ color:var(--cyan); }

/* ---------- header ---------- */
.site-header{ background:var(--paper-2); border-bottom:1px solid var(--rule); position:sticky; top:0; z-index:60; }
.site-header::after{ content:""; display:block; height:3px; background:linear-gradient(90deg,var(--cold) 0 50%,var(--hot) 50% 100%); }
.site-header .container{ display:flex; align-items:center; justify-content:space-between; gap:20px; padding-top:12px; padding-bottom:12px; }
.brand{ display:flex; align-items:center; gap:11px; min-width:0; }
.brand img{ height:50px; width:auto; }
.bw strong{ display:block; font-family:'Zilla Slab',serif; font-weight:700; font-size:1.2rem; color:var(--ink); line-height:1.05; }
.bw span{ display:block; font-family:'JetBrains Mono',monospace; font-size:.64rem; letter-spacing:.15em; text-transform:uppercase; color:var(--blue-2); margin-top:4px; }
.mainnav ul{ list-style:none; display:flex; gap:28px; margin:0; padding:0; }
.mainnav a{ color:var(--ink); font-weight:700; font-size:.97rem; padding-bottom:4px; border-bottom:2px solid transparent; }
.mainnav a:hover{ text-decoration:none; border-bottom-color:var(--hot); }
.mainnav a[aria-current="page"]{ border-bottom-color:var(--hot); }
.navcta{ display:flex; align-items:center; gap:11px; }
.navtoggle{ display:none; background:var(--ink); border:none; width:44px; height:38px; border-radius:3px; cursor:pointer; align-items:center; justify-content:center; }
.navtoggle span,.navtoggle span::before,.navtoggle span::after{ content:""; display:block; width:19px; height:2px; background:#fff; position:relative; }
.navtoggle span::before{ position:absolute; top:-6px; }
.navtoggle span::after{ position:absolute; top:6px; }
.callicon{ display:none; padding:10px; }
.callicon svg{ width:18px; height:18px; }

.hasdrop{ position:relative; }
.mainnav .drop{
  display:none; position:absolute; top:calc(100% + 12px); left:-16px; background:var(--white);
  border:1px solid var(--rule); border-top:3px solid var(--hot); box-shadow:0 16px 40px -18px rgba(15,36,64,.4);
  padding:8px; min-width:300px; list-style:none; margin:0; flex-direction:column;
}
.mainnav .hasdrop:hover .drop,.mainnav .hasdrop:focus-within .drop{ display:flex; }
.mainnav .drop a{ display:block; padding:10px 13px; border-bottom:none; font-weight:500; font-size:.94rem; }
.mainnav .drop a:hover{ background:var(--paper); }

/* ---------- hero ---------- */
.hero{ border-bottom:1px solid var(--rule); padding:60px 0 66px; }
.hero-grid{ display:grid; grid-template-columns:1.03fr .97fr; gap:50px; align-items:center; }
.hero .lede{ max-width:50ch; }
.hero-actions{ display:flex; gap:14px; flex-wrap:wrap; margin-top:28px; }
.hero-note{ font-family:'JetBrains Mono',monospace; font-size:.76rem; color:var(--muted); margin-top:20px; }
.legend{ display:flex; gap:22px; margin-top:26px; flex-wrap:wrap; font-family:'JetBrains Mono',monospace; font-size:.74rem; color:var(--muted); }
.legend b{ display:inline-block; width:22px; height:3px; margin-right:7px; vertical-align:middle; }
.legend .h b{ background:var(--hot); }
.legend .c b{ background:var(--cold); }
.schema{ width:100%; height:auto; }

/* ---------- spec strip ---------- */
.spec{ border-top:1px solid var(--rule); border-bottom:1px solid var(--rule); background:var(--white); }
.spec .container{ display:grid; grid-template-columns:repeat(4,1fr); }
.spec div{ padding:24px 20px; border-right:1px solid var(--rule-2); }
.spec div:last-child{ border-right:none; }
.spec b{ display:block; font-family:'Zilla Slab',serif; font-size:1.65rem; color:var(--ink); line-height:1.1; }
.spec span{ font-family:'JetBrains Mono',monospace; font-size:.7rem; letter-spacing:.11em; text-transform:uppercase; color:var(--muted); }

/* ---------- layout ---------- */
.grid{ display:grid; gap:24px; }
.g2{ grid-template-columns:repeat(2,1fr); }
.g3{ grid-template-columns:repeat(3,1fr); }
.g4{ grid-template-columns:repeat(4,1fr); }
.two-col{ display:grid; grid-template-columns:1fr 1fr; gap:54px; align-items:center; }

.card{ background:var(--white); border:1px solid var(--rule); padding:26px; }
.card-p{ background:var(--paper); border:1px solid var(--rule); padding:26px; }

/* ---------- service cards ---------- */
.svc{ background:var(--white); border:1px solid var(--rule); padding:26px; display:flex; flex-direction:column; gap:11px; transition:border-color .15s ease; }
.svc:hover{ border-color:var(--blue-2); }
.svc .hd{ display:flex; align-items:center; justify-content:space-between; gap:12px; border-bottom:1px solid var(--rule-2); padding-bottom:14px; margin-bottom:4px; }
.svc .hd .n{ font-family:'JetBrains Mono',monospace; font-size:.71rem; letter-spacing:.13em; color:var(--hot); }
.svc .hd svg{ width:26px; height:26px; color:var(--blue-2); }
.svc h3{ margin:0; font-size:1.17rem; }
.svc h3 a{ color:var(--ink); }
.svc p{ margin:0; color:var(--muted); font-size:.97rem; }
.svc .more{ margin-top:auto; font-family:'JetBrains Mono',monospace; font-size:.76rem; letter-spacing:.09em; text-transform:uppercase; color:var(--blue); }

/* ---------- process rail ---------- */
.steps{ display:grid; grid-template-columns:repeat(4,1fr); gap:0; border-top:2px solid var(--ink); }
.steps .st{ padding:26px 24px 26px 0; border-right:1px solid var(--rule); }
.steps .st:last-child{ border-right:none; padding-right:0; }
.steps .st:not(:first-child){ padding-left:24px; }
.steps .st b{ font-family:'JetBrains Mono',monospace; font-size:.72rem; letter-spacing:.14em; color:var(--hot); display:block; margin-bottom:12px; }
.steps .st h3{ font-size:1.05rem; margin-bottom:8px; }
.steps .st p{ margin:0; font-size:.94rem; color:var(--muted); }

/* ---------- checklist ---------- */
.checks{ list-style:none; padding:0; margin:0; display:grid; gap:12px; }
.checks li{ display:flex; gap:12px; align-items:flex-start; }
.checks li svg{ width:19px; height:19px; margin-top:4px; color:var(--cold); }
.dark .checks li svg{ color:var(--cyan); }

/* ---------- scope: hot/cold coded ---------- */
.scope{ display:grid; grid-template-columns:1fr 1fr; gap:24px; }
.scope > div{ background:var(--white); border:1px solid var(--rule); padding:28px; position:relative; }
.scope .inc{ border-top:4px solid var(--cold); }
.scope .exc{ border-top:4px solid var(--hot); }
.scope h4{ margin-bottom:16px; font-family:'JetBrains Mono',monospace; font-size:.78rem; letter-spacing:.13em; text-transform:uppercase; }
.scope .inc h4{ color:var(--cold); }
.scope .exc h4{ color:var(--hot); }
.scope ul{ list-style:none; padding:0; margin:0; display:grid; gap:12px; }
.scope li{ display:flex; gap:11px; font-size:.97rem; line-height:1.5; }
.scope .inc li::before{ content:"+"; color:var(--cold); font-family:'JetBrains Mono',monospace; font-weight:700; }
.scope .exc li::before{ content:"$"; color:var(--hot); font-family:'JetBrains Mono',monospace; font-weight:700; }

/* ---------- gallery: auto-flow, no nth-child math ---------- */
.gal{ display:grid; grid-template-columns:repeat(auto-fill,minmax(255px,1fr)); gap:16px; }
.gal figure{ margin:0; position:relative; background:var(--ink); border:1px solid rgba(255,255,255,.16); }
.gal img{ width:100%; height:215px; object-fit:cover; }
.gal figcaption{
  position:absolute; left:0; right:0; bottom:0; padding:9px 13px;
  background:linear-gradient(0deg,rgba(15,36,64,.93),rgba(15,36,64,0));
  color:#DCE7F2; font-family:'JetBrains Mono',monospace; font-size:.71rem; line-height:1.4;
}

/* ---------- symptoms ---------- */
.symp{ display:grid; grid-template-columns:repeat(2,1fr); gap:16px; }
.symp div{ display:flex; gap:13px; background:rgba(255,255,255,.05); border-left:3px solid var(--cyan); padding:14px 18px; font-size:.97rem; }
.symp b{ font-family:'JetBrains Mono',monospace; color:var(--cyan); font-size:.76rem; flex:none; }

/* ---------- FAQ ---------- */
.faq{ max-width:860px; margin:0 auto; }
.faq details{ background:var(--white); border:1px solid var(--rule); margin-bottom:12px; }
.faq summary{
  cursor:pointer; list-style:none; padding:19px 22px; display:flex; justify-content:space-between; gap:18px;
  align-items:center; font-family:'Zilla Slab',serif; font-weight:600; font-size:1.05rem; color:var(--ink);
}
.faq summary::-webkit-details-marker{ display:none; }
.faq summary::after{ content:"+"; font-family:'JetBrains Mono',monospace; font-size:1.35rem; color:var(--hot); flex:none; line-height:1; }
.faq details[open]{ border-left:3px solid var(--hot); }
.faq details[open] summary::after{ content:"−"; }
.faq details p{ margin:0; padding:0 22px 22px; color:var(--muted); max-width:74ch; }

/* ---------- reviews ---------- */
.rev{ background:var(--white); border:1px solid var(--rule); padding:26px; }
.rev .st{ color:var(--ochre); letter-spacing:3px; font-size:.9rem; display:block; margin-bottom:10px; }
.rev .who{ font-family:'Zilla Slab',serif; font-weight:600; color:var(--ink); font-size:.96rem; }
.rev .who span{ display:block; font-family:'JetBrains Mono',monospace; font-size:.73rem; color:var(--muted); margin-top:3px; }

/* ---------- contact ---------- */
.ccard{ background:var(--white); border:1px solid var(--rule); border-left:4px solid var(--cold); padding:24px; display:flex; gap:16px; }
.ccard svg{ width:26px; height:26px; color:var(--blue-2); flex:none; }
.ccard h4{ margin:0 0 5px; }
.ccard p{ margin:0; }
.ccard .sub{ font-size:.85rem; color:var(--muted); margin-top:4px; }
.mapbox{ border:1px solid var(--rule); background:var(--white); padding:8px; }
.mapbox iframe{ width:100%; height:430px; border:0; display:block; }

/* ---------- CTA ---------- */
.cta{ padding:56px 44px; text-align:center; border:1px solid rgba(255,255,255,.2); }
.cta h2{ color:var(--white); }
.cta p{ color:#93A9C0; max-width:58ch; margin:0 auto 24px; }
.cta-actions{ display:flex; gap:14px; justify-content:center; flex-wrap:wrap; }

/* ---------- breadcrumb ---------- */
.crumb{ font-family:'JetBrains Mono',monospace; font-size:.73rem; color:var(--muted); padding:16px 0 0; }
.crumb a{ color:var(--muted); }
.crumb i{ font-style:normal; margin:0 8px; color:var(--rule); }

/* ---------- footer ---------- */
.site-footer{ background:var(--ink); color:#A9BFD4; }
.site-footer .container{ padding-top:54px; }
.fgrid{ display:grid; grid-template-columns:1.4fr 1fr 1fr 1.1fr; gap:36px; padding-bottom:36px; }
.fbrand{ display:flex; gap:12px; align-items:center; margin-bottom:15px; }
.fbrand img{ height:50px; }
.fbrand strong{ font-family:'Zilla Slab',serif; color:#fff; font-size:1.08rem; line-height:1.15; }
.site-footer h5{ font-family:'JetBrains Mono',monospace; font-size:.71rem; letter-spacing:.15em; text-transform:uppercase; color:var(--cyan); margin:0 0 15px; }
.site-footer ul{ list-style:none; padding:0; margin:0; display:grid; gap:10px; }
.site-footer a{ color:#A9BFD4; }
.site-footer a:hover{ color:#fff; }
.fbot{ border-top:1px solid rgba(255,255,255,.14); padding:20px 0 28px; display:flex; justify-content:space-between; gap:16px; flex-wrap:wrap; font-size:.79rem; color:#7288A0; }

/* ---------- mobile ---------- */
.mcall{ display:none; }
.mpanel{ display:none; position:fixed; inset:0; background:var(--paper-2); z-index:100; padding:20px 24px; overflow-y:auto; }
.mpanel.open{ display:block; }
.mpanel .top{ display:flex; justify-content:space-between; align-items:center; margin-bottom:24px; }
.mpanel ul{ list-style:none; padding:0; margin:0; }
.mpanel a{ display:block; padding:14px 4px; border-bottom:1px solid var(--rule); font-family:'Zilla Slab',serif; font-weight:600; font-size:1.1rem; color:var(--ink); }

@media (max-width:1000px){
  .hero-grid,.two-col{ grid-template-columns:1fr; }
  .g3,.g4,.steps,.spec .container,.fgrid{ grid-template-columns:repeat(2,1fr); }
  .steps .st{ border-bottom:1px solid var(--rule); }
  .steps .st:nth-child(2n){ border-right:none; }
  .steps .st:nth-last-child(-n+2){ border-bottom:none; }
  .steps .st:nth-child(odd){ padding-left:0; }
  .steps .st:nth-child(even){ padding-left:24px; }
  .spec div:nth-child(2n){ border-right:none; }
}
@media (max-width:760px){
  .mainnav ul,.navcta .btn-out{ display:none; }
  .navtoggle{ display:flex; }
  .callicon{ display:inline-flex; }
  .callfull{ display:none; }
  .g2,.g3,.g4,.steps,.scope,.symp,.spec .container,.fgrid{ grid-template-columns:1fr; }
  .steps .st{ border-right:none; padding-left:0!important; padding-right:0; }
  .steps .st:last-child{ border-bottom:none; }
  .spec div{ border-right:none; border-bottom:1px solid var(--rule-2); }
  .spec div:last-child{ border-bottom:none; }
  section{ padding:52px 0; }
  .cta{ padding:36px 22px; }
  body{ padding-bottom:66px; }
  .brand img{ height:40px; }
  .bw strong{ font-size:1rem; }
  .bw span{ display:none; }
  .mcall{ display:flex; position:fixed; bottom:0; left:0; right:0; z-index:70; background:var(--ink); padding:10px 14px; }
}