/* ==========================================================
   WhatFilterDoINeed.com — industrial filter sourcing styling
   Similar professional structure, adjusted typography and colour system
   ========================================================== */

:root{
  --bg:#ffffff;
  --ink:#111827;
  --navy:#10232c;
  --navy2:#183440;
  --muted:#60717b;
  --line:#e3eaed;
  --soft:#f3f8f8;
  --card:#ffffff;
  --accent:#0f8a94;
  --accent-dark:#0a6270;
  --accent-soft:#e6f7f8;
  --warm:#f5a524;
  --radius:14px;
  --max:1140px;
  --shadow:0 14px 34px rgba(16,35,44,.09);
}

*{box-sizing:border-box}
html{scroll-behavior:smooth}
html,body{min-height:100%}
body{
  margin:0;
  font-family:"Source Sans 3",system-ui,-apple-system,Segoe UI,Roboto,Arial,sans-serif;
  background:var(--bg);
  color:var(--ink);
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}

img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
a:hover{color:var(--accent)}
.wrap{max-width:var(--max);margin:0 auto;padding:0 22px}

/* Accessibility */
.skip{position:absolute;left:-999px;top:auto;width:1px;height:1px;overflow:hidden}
.skip:focus{left:18px;top:18px;width:auto;height:auto;padding:10px 12px;background:#000;color:#fff;border-radius:8px;z-index:9999}

/* Header */
.site-header{
  position:sticky;
  top:0;
  z-index:50;
  background:#fff;
  border-bottom:1px solid rgba(15,138,148,.12);
  backdrop-filter:blur(10px);
}
.header-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:22px;
  padding:10px 0;
}
.brand{display:flex;align-items:center;flex:0 0 auto}
.brand-logo{height:84px;width:auto;object-fit:contain}
.nav{
  display:flex;
  align-items:center;
  justify-content:flex-end;
  gap:4px;
  flex-wrap:wrap;
}
.nav a{
  padding:10px 11px;
  border-radius:999px;
  color:#263443;
  font-size:13px;
  font-weight:700;
  letter-spacing:.02em;
}
.nav a:not(.btn):hover{background:var(--soft);color:var(--accent-dark)}

/* Buttons */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  min-height:46px;
  padding:12px 18px;
  border-radius:999px;
  border:1px solid transparent;
  font-weight:800;
  letter-spacing:.01em;
  cursor:pointer;
  transition:transform .16s ease, box-shadow .16s ease, background .16s ease;
}
.btn:hover{transform:translateY(-1px)}
.btn-primary{background:var(--accent);color:#fff;box-shadow:0 10px 22px rgba(15,138,148,.22)}
.btn-primary:hover{background:var(--accent-dark);color:#fff}
.btn-ghost{background:#fff;border-color:#cfd8e3;color:var(--navy)}
.btn-ghost:hover{background:var(--soft);color:var(--navy)}

/* Hero */
.hero{
  padding:76px 0 62px;
  background:
    linear-gradient(115deg,rgba(9,29,38,.96),rgba(13,55,63,.90)),
    radial-gradient(760px 430px at 83% 15%,rgba(15,138,148,.28),transparent 62%),
    radial-gradient(620px 360px at 8% 88%,rgba(245,165,36,.10),transparent 62%);
  color:#fff;
}
.hero-grid{display:grid;grid-template-columns:1.25fr .75fr;gap:44px;align-items:center}
.kicker{
  display:inline-flex;
  align-items:center;
  gap:8px;
  margin:0 0 16px;
  color:#b8edf0;
  font-size:12px;
  font-weight:900;
  letter-spacing:.16em;
  text-transform:none;
}
.kicker:before{content:"";width:34px;height:2px;background:var(--accent);display:inline-block}
h1{
  font-family:"Manrope",system-ui,-apple-system,Segoe UI,Roboto,Arial,sans-serif;
  margin:0 0 18px;
  max-width:850px;
  font-size:clamp(38px,5.2vw,68px);
  line-height:1.02;
  letter-spacing:-.048em;
  text-transform:none;
}
.lead{margin:0 0 22px;max-width:760px;color:rgba(255,255,255,.82);font-size:clamp(17px,1.7vw,21px)}
.hero .bullets{color:rgba(255,255,255,.86)}
.hero .subtle{color:rgba(255,255,255,.65)}
.cta{display:flex;gap:12px;flex-wrap:wrap;margin:24px 0 14px}
.subtle{margin:0;color:var(--muted);font-size:13px}

/* Friendly contact prompt */
.hero-contact{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:18px;
  max-width:780px;
  margin:0 0 24px;
  padding:16px 18px;
  border:1px solid rgba(184,237,240,.28);
  border-radius:16px;
  background:linear-gradient(135deg,rgba(255,255,255,.12),rgba(255,255,255,.07));
  box-shadow:0 16px 36px rgba(0,0,0,.14);
  backdrop-filter:blur(8px);
}
.hero-contact-copy{
  display:flex;
  flex-direction:column;
  gap:3px;
}
.hero-contact-label{
  display:flex;
  align-items:center;
  gap:7px;
  color:#b8edf0;
  font-size:11px;
  font-weight:900;
  letter-spacing:.12em;
  text-transform:uppercase;
}
.hero-contact-flag{width:19px;height:auto;display:inline-block}
.flag-emoji{font-size:16px;line-height:1}
.hero-contact strong{
  color:#fff;
  font-size:18px;
  line-height:1.2;
}
.hero-contact span{
  color:rgba(255,255,255,.78);
  font-size:13px;
}
.hero-contact a{
  flex:0 0 auto;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  min-height:42px;
  padding:10px 14px;
  border-radius:999px;
  background:#fff;
  color:var(--accent-dark);
  font-size:14px;
  font-weight:900;
  box-shadow:0 10px 24px rgba(0,0,0,.14);
}
.hero-contact a:hover{
  background:var(--accent-soft);
  color:var(--accent-dark);
}

.hero-card{
  background:#fff;
  color:var(--ink);
  border-radius:var(--radius);
  padding:28px;
  box-shadow:0 24px 70px rgba(0,0,0,.22);
  border-top:5px solid var(--warm);
}
.hero-card h2{margin:0 0 12px;font-size:22px;letter-spacing:-.02em}

/* Typography */
h2,h3{font-family:"Manrope",system-ui,-apple-system,Segoe UI,Roboto,Arial,sans-serif;color:var(--navy);letter-spacing:-.025em}
.section h2{
  margin:0 0 12px;
  font-size:clamp(28px,3.1vw,42px);
  line-height:1.1;
  text-transform:uppercase;
}
.section h2:after{content:"";display:block;width:54px;height:3px;background:var(--accent);margin-top:14px}
.section-lead{margin:0 0 26px;max-width:78ch;color:var(--muted);font-size:17px}
.muted{color:var(--muted)}
.tiny{font-size:13px}
.mt{margin-top:18px}

/* Lists */
.bullets{margin:0;padding-left:18px;color:#334155}
.bullets li{margin:7px 0}
.check{list-style:none;padding:0;margin:14px 0 0}
.check li{position:relative;padding-left:30px;margin:10px 0;color:#334155}
.check li:before{content:"✓";position:absolute;left:0;top:-1px;color:var(--accent);font-weight:900}

/* Sections */
.section{padding:72px 0;background:#fff}
.section.alt{background:var(--soft)}
.grid3{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.grid2{display:grid;grid-template-columns:repeat(2,1fr);gap:18px}

/* Cards */
.tile,.pricecard,.pricebox,.form,.contactbox,details,.callout{
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--radius);
  box-shadow:var(--shadow);
}
.tile,.pricecard,.pricebox,.form,.contactbox{padding:24px}
.tile{position:relative;overflow:hidden}
.tile:before{content:"";position:absolute;left:0;top:0;bottom:0;width:5px;background:linear-gradient(180deg,var(--accent),var(--warm));opacity:.92}
.tile h3,.pricecard h3{margin:0 0 9px;font-size:20px;line-height:1.2}
.tile p{margin:0 0 8px;color:var(--muted)}
.tile p:last-child{margin-bottom:0}

.callout{padding:26px;background:#fff;border-left:5px solid var(--accent)}
.callout h3{margin:0 0 10px;font-size:22px}
.pricecard.featured{border-color:rgba(31,111,209,.42);box-shadow:0 16px 38px rgba(15,138,148,.13)}
.badge{display:inline-flex;margin-bottom:12px;padding:6px 10px;border-radius:999px;background:var(--accent-soft);color:var(--accent-dark);border:1px solid #cfe2fb;font-size:12px;font-weight:900;text-transform:uppercase;letter-spacing:.05em}
.price{margin:10px 0 12px;font-size:16px}.price strong{font-size:21px}
.card-note{margin-top:14px;padding:13px;border-radius:6px;background:var(--soft);border:1px solid var(--line);color:var(--muted)}

/* FAQ */
details{padding:18px 20px;margin:12px 0;box-shadow:none}
summary{cursor:pointer;font-weight:900;color:var(--navy)}
details p{margin:12px 0 0;color:var(--muted)}
.panel{padding-top:10px;color:var(--muted)}

/* Forms */
label{display:block;margin:13px 0;font-weight:800;color:var(--navy)}
input,textarea{
  margin-top:8px;width:100%;padding:13px 14px;border-radius:6px;border:1px solid #cfd8e3;background:#fff;color:var(--ink);outline:none;font:inherit;
}
input:focus,textarea:focus{border-color:var(--accent);box-shadow:0 0 0 3px rgba(15,138,148,.14)}
.contact a,.tile a,.callout a,.section p a{color:var(--accent-dark);text-decoration:underline;text-underline-offset:3px}

/* Footer */
.footer{padding:34px 0;background:#0b2028;color:#fff;border-top:0}
.footer .muted{color:rgba(255,255,255,.62)}
.footer-location{display:flex;align-items:center;gap:8px;margin:0 0 8px;font-weight:800}
.flag-icon{width:20px;height:auto;margin-left:4px;vertical-align:middle}
.foot{display:flex;flex-direction:column;gap:14px;align-items:flex-start}
.footnav{display:flex;gap:12px;flex-wrap:wrap}
.footnav a{padding:8px 10px;border-radius:6px;background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.12)}

@media (max-width: 940px){
  .header-inner{flex-direction:column;align-items:center;gap:10px}
  .nav{justify-content:center}
  .hero-grid{grid-template-columns:1fr;gap:28px}
  .grid3,.grid2{grid-template-columns:1fr}
  .brand-logo{height:86px}
}

@media (max-width: 560px){
  .hero-contact{
    align-items:stretch;
    flex-direction:column;
    gap:12px;
    padding:15px;
  }
  .hero-contact a{
    width:100%;
    font-size:13px;
  }
  .hero-contact strong{
    font-size:17px;
  }
  .wrap{padding:0 18px}
  .site-header{position:relative}
  .nav a{font-size:12px;padding:8px 8px}
  .nav .btn{width:100%;margin-top:4px}
  .hero{padding:48px 0 42px}
  h1{font-size:clamp(34px,12vw,52px)}
  .hero-card,.tile,.pricecard,.form,.callout{padding:20px}
  .section{padding:54px 0}
}

/* WhatFilterDoINeed.com additions */
select{
  margin-top:8px;width:100%;padding:13px 14px;border-radius:6px;border:1px solid #cfd8e3;background:#fff;color:var(--ink);outline:none;font:inherit;
}
select:focus{border-color:var(--accent);box-shadow:0 0 0 3px rgba(15,138,148,.14)}
.hero-card{align-self:start}
.card-note strong{color:var(--navy)}
@media (max-width: 940px){.brand-logo{height:88px}}


/* Formspree contact flow */
.form .card-note,
.card-note code{
  font-family:ui-monospace,SFMono-Regular,Menlo,Monaco,Consolas,"Liberation Mono",monospace;
}
code{
  padding:2px 5px;
  border-radius:6px;
  background:rgba(15,138,148,.08);
  color:var(--accent-dark);
  font-size:.92em;
}


/* Long-tail SEO blocks */
.searchblock{
  background:linear-gradient(180deg,#fff,rgba(243,248,248,.66));
  border:1px solid var(--line);
  border-radius:var(--radius);
  box-shadow:var(--shadow);
  padding:24px;
  position:relative;
  overflow:hidden;
}
.searchblock:before{
  content:"";
  position:absolute;
  inset:0 auto 0 0;
  width:5px;
  background:var(--accent);
  opacity:.86;
}
.searchblock h3{
  margin:0 0 10px;
  font-size:21px;
  line-height:1.2;
}
.searchblock p{
  margin:0 0 10px;
  color:var(--muted);
}
.searchblock p:last-child{margin-bottom:0}

@media (min-width: 941px){
  .brand-logo{height:88px}
  .header-inner{padding:8px 0}
}

@media (max-width: 560px){
  .brand-logo{height:78px}
}