/* ============================================================
   Pak Signal Boosters — design tokens
   Ink #12213A · Paper #F5F7F6 · Signal Green #1FA672
   Deep Teal #0E7C86 · Alert Amber #E2A33B · Border #D8DEDA
   Display: Space Grotesk · Body: Inter · Data: IBM Plex Mono
   ============================================================ */

:root{
  --ink:#12213A;
  --paper:#F5F7F6;
  --paper-alt:#EAF3EF;
  --green:#1FA672;
  --teal:#0E7C86;
  --amber:#E2A33B;
  --border:#D8DEDA;
  --muted:#5B6B63;
  --radius:14px;
  --font-display:'Space Grotesk', sans-serif;
  --font-body:'Inter', sans-serif;
  --font-mono:'IBM Plex Mono', monospace;
}

*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--paper);
  color:var(--ink);
  font-family:var(--font-body);
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:var(--teal);}
h1,h2,h3{font-family:var(--font-display);line-height:1.15;margin:0 0 .5em;color:var(--ink);}
h2{font-size:clamp(1.5rem,1.1rem + 1.6vw,2.1rem);}
h3{font-size:1.15rem;}
p{margin:0 0 1em;}
ul{margin:0;padding:0;list-style:none;}
:focus-visible{outline:3px solid var(--teal);outline-offset:2px;}

.wrap{max-width:1180px;margin:0 auto;padding:0 24px;}
.wrap.narrow{max-width:820px;}
.wrap.center{text-align:center;}

/* ---------- Signal bars signature element ---------- */
.brand-bars{display:inline-flex;align-items:flex-end;gap:3px;height:18px;}
.brand-bars .bar{display:block;width:4px;background:var(--green);border-radius:2px;}
.brand-bars .b1{height:6px;}
.brand-bars .b2{height:10px;}
.brand-bars .b3{height:14px;}
.brand-bars .b4{height:18px;}

/* ---------- Header & Nav ---------- */
.site-header{
  background:var(--ink);
  position:sticky;top:0;z-index:50;
}
.header-inner{
  display:flex;align-items:center;justify-content:space-between;
  padding:14px 24px;position:relative;
}
.brand{
  display:flex;align-items:center;gap:10px;
  font-family:var(--font-display);font-weight:600;font-size:1.15rem;
  color:#fff;text-decoration:none;
}
.site-nav{display:flex;align-items:center;gap:22px;}
.site-nav a{
  color:#fff;text-decoration:none;font-size:.95rem;font-weight:500;opacity:.9;
}
.site-nav a:hover{opacity:1;}
.header-cta{
  background:var(--green);color:var(--ink) !important;font-weight:700 !important;
  padding:10px 18px;border-radius:999px;white-space:nowrap;opacity:1 !important;
}
.header-cta:hover{background:#25bd80;}
.nav-toggle{
  display:none;background:none;border:none;cursor:pointer;
  width:38px;height:32px;flex-direction:column;justify-content:space-between;padding:4px;
}
.nav-toggle span{display:block;height:3px;background:#fff;border-radius:2px;}

@media (max-width:860px){
  .nav-toggle{display:flex;}
  .site-nav{
    position:absolute;top:100%;left:0;right:0;background:var(--ink);
    flex-direction:column;align-items:stretch;gap:0;
    max-height:0;overflow:hidden;transition:max-height .25s ease;
  }
  .site-nav.is-open{max-height:320px;}
  .site-nav a{padding:14px 24px;border-top:1px solid rgba(255,255,255,.1);}
  .site-nav .header-cta{margin:14px 24px;text-align:center;}
}

/* ---------- Buttons ---------- */
.btn{
  display:inline-block;padding:14px 26px;border-radius:999px;
  font-weight:600;text-decoration:none;font-size:1rem;
  transition:transform .12s ease, background .12s ease;
}
.btn:hover{transform:translateY(-1px);}
.btn-primary{background:var(--green);color:var(--ink);}
.btn-primary:hover{background:#25bd80;}
.btn-ghost{background:transparent;color:var(--ink);border:2px solid var(--ink);}
.btn-ghost:hover{background:var(--ink);color:#fff;}
.cta-row{display:flex;gap:14px;flex-wrap:wrap;margin-top:8px;}
.cta-row.center{justify-content:center;}

/* ---------- Hero ---------- */
.hero{padding:64px 0 40px;background:linear-gradient(180deg,var(--paper-alt),var(--paper));}
.hero-grid{display:grid;grid-template-columns:1.1fr 1fr;gap:48px;align-items:center;}
.eyebrow{
  font-family:var(--font-mono);font-size:.8rem;letter-spacing:.06em;
  text-transform:uppercase;color:var(--teal);margin-bottom:10px;
}
.hero h1{font-size:clamp(2rem,1.3rem + 2.8vw,3.1rem);}
.hero-city{color:var(--teal);}
.hero-sub{font-size:1.08rem;color:var(--muted);max-width:52ch;}
.hero-media img{border-radius:var(--radius);}

.signal-bars-demo{
  margin-top:32px;display:flex;align-items:flex-end;gap:20px;
  font-family:var(--font-mono);font-size:.75rem;color:var(--muted);
}
.bars-before,.bars-after{display:flex;flex-direction:column;align-items:center;gap:8px;}
.bars-before>div,.bars-after>div{display:flex;}
.bars-before span,.bars-after span{width:8px;margin:0 2px;border-radius:2px;}
.bars-before span:nth-child(1){height:8px;background:var(--border);}
.bars-before span:nth-child(2){height:14px;background:var(--border);}
.bars-before span:nth-child(3){height:20px;background:var(--amber);}
.bars-before span:nth-child(4){height:26px;background:var(--border);}
.bars-after span{background:var(--green);}
.bars-after span:nth-child(1){height:8px;}
.bars-after span:nth-child(2){height:14px;}
.bars-after span:nth-child(3){height:20px;}
.bars-after span:nth-child(4){height:26px;}
.arrow{font-size:1.4rem;color:var(--teal);align-self:center;}

/* ---------- Section rhythm ---------- */
.section{padding:56px 0;border-top:1px solid var(--border);}
.section:first-of-type{border-top:none;}
.section p{color:var(--ink);}
.note{
  font-size:.9rem;color:var(--muted);border-left:3px solid var(--amber);
  padding-left:14px;
}

/* ---------- Feature grid ---------- */
.feature-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:16px;}
.feature-grid li{
  display:flex;align-items:flex-start;gap:12px;
  background:#fff;border:1px solid var(--border);border-radius:var(--radius);
  padding:16px 18px;font-size:.95rem;
}
.feature-bar{
  flex:none;width:6px;height:36px;border-radius:3px;
  background:linear-gradient(180deg,var(--green),var(--teal));
  margin-top:2px;
}

/* ---------- Specs table ---------- */
.specs-table{width:100%;border-collapse:collapse;font-family:var(--font-mono);font-size:.92rem;}
.specs-table th,.specs-table td{
  text-align:left;padding:12px 14px;border-bottom:1px solid var(--border);
}
.specs-table th{color:var(--muted);font-weight:500;width:38%;}

/* ---------- Steps (how it works / installation) ---------- */
.steps-list{counter-reset:none;display:flex;flex-direction:column;gap:14px;margin:20px 0;}
.steps-list li{display:flex;gap:14px;align-items:flex-start;}
.step-num{
  flex:none;width:30px;height:30px;border-radius:50%;
  background:var(--ink);color:#fff;font-family:var(--font-mono);font-size:.85rem;
  display:flex;align-items:center;justify-content:center;
}
.diagram-img{margin-top:24px;border:1px solid var(--border);border-radius:var(--radius);background:#fff;}

/* ---------- Pills / networks ---------- */
.pill-list{display:flex;flex-wrap:wrap;gap:10px;margin:16px 0;}
.pill-list li{
  background:#fff;border:1px solid var(--border);border-radius:999px;
  padding:8px 18px;font-family:var(--font-mono);font-size:.85rem;
}

/* ---------- Problem list ---------- */
.problem-list li{
  position:relative;padding-left:22px;margin-bottom:10px;color:var(--muted);
}
.problem-list li::before{
  content:'';position:absolute;left:0;top:8px;width:10px;height:10px;
  background:var(--amber);border-radius:2px;
}

/* ---------- Use case / troubleshooting cards ---------- */
.use-case-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:18px;}
.use-case-card{
  background:#fff;border:1px solid var(--border);border-radius:var(--radius);padding:20px;
}
.use-case-card h3{color:var(--teal);}

/* ---------- Check list (advantages / buyer's guide) ---------- */
.check-list li{position:relative;padding-left:26px;margin-bottom:10px;}
.check-list li::before{
  content:'\2713';position:absolute;left:0;top:0;color:var(--green);font-weight:700;
}

/* ---------- FAQ ---------- */
.faq-list{display:flex;flex-direction:column;gap:10px;}
.faq-item{
  background:#fff;border:1px solid var(--border);border-radius:var(--radius);
  padding:16px 20px;
}
.faq-item summary{
  cursor:pointer;font-weight:600;font-family:var(--font-display);
  list-style:none;position:relative;padding-right:24px;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::after{
  content:'+';position:absolute;right:0;top:0;color:var(--teal);font-size:1.2rem;
}
.faq-item[open] summary::after{content:'\2212';}
.faq-item p{margin-top:12px;color:var(--muted);}

/* ---------- Cities list ---------- */
.city-links{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:10px;margin-top:18px;}
.city-links a{
  display:block;background:#fff;border:1px solid var(--border);border-radius:10px;
  padding:12px 16px;text-decoration:none;color:var(--ink);font-size:.92rem;
}
.city-links a:hover{border-color:var(--teal);color:var(--teal);}

/* ---------- Conversion / footer ---------- */
.conversion{background:var(--paper-alt);}
.site-footer{background:var(--ink);color:#fff;padding:40px 0;}
.footer-inner{display:flex;flex-direction:column;align-items:center;gap:14px;text-align:center;}
.footer-brand{display:flex;align-items:center;gap:10px;font-family:var(--font-display);font-weight:600;}
.footer-contact{display:flex;gap:18px;flex-wrap:wrap;justify-content:center;}
.footer-contact a{color:#fff;text-decoration:none;font-size:.92rem;opacity:.85;}
.footer-contact a:hover{opacity:1;}
.footer-note{font-size:.8rem;color:#9fb3ac;margin:0;}

/* ---------- Responsive ---------- */
@media (max-width:820px){
  .hero-grid{grid-template-columns:1fr;}
  .hero-media{order:-1;}
}
@media (max-width:520px){
  .header-cta{padding:8px 14px;font-size:.82rem;}
  .btn{width:100%;text-align:center;}
  .cta-row{flex-direction:column;}
}

/* Respect reduced motion preferences */
@media (prefers-reduced-motion: reduce){
  *{scroll-behavior:auto !important;}
  .btn{transition:none;}
}

/* ---------- Blog & Shop listing grids ---------- */
.listing-header{padding:48px 0 20px;text-align:center;}
.listing-header h1{font-size:clamp(1.8rem,1.3rem + 2vw,2.6rem);}
.listing-header p{color:var(--muted);max-width:60ch;margin:0 auto;}

.card-grid{
  display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));
  gap:22px;padding:32px 0 56px;
}
.post-card,.product-card{
  background:#fff;border:1px solid var(--border);border-radius:var(--radius);
  overflow:hidden;display:flex;flex-direction:column;text-decoration:none;color:var(--ink);
  transition:transform .15s ease, box-shadow .15s ease;
}
.post-card:hover,.product-card:hover{
  transform:translateY(-3px);box-shadow:0 10px 24px rgba(18,33,58,.08);
}
.card-img{aspect-ratio:4/3;overflow:hidden;background:var(--paper-alt);}
.card-img img{width:100%;height:100%;object-fit:cover;}
.card-body{padding:18px 18px 20px;flex:1;display:flex;flex-direction:column;}
.card-body h3{font-size:1.05rem;margin-bottom:8px;}
.card-body p{color:var(--muted);font-size:.9rem;flex:1;}
.card-meta{font-family:var(--font-mono);font-size:.75rem;color:var(--muted);margin-bottom:8px;}
.product-price{
  font-family:var(--font-mono);font-weight:600;color:var(--teal);margin-top:10px;font-size:1rem;
}

.empty-state{
  text-align:center;padding:60px 24px;color:var(--muted);
}

/* ---------- Pagination ---------- */
.pagination{display:flex;justify-content:center;gap:8px;padding:0 0 60px;flex-wrap:wrap;}
.pagination a,.pagination span{
  display:inline-flex;align-items:center;justify-content:center;
  min-width:40px;height:40px;border-radius:8px;text-decoration:none;
  border:1px solid var(--border);color:var(--ink);font-family:var(--font-mono);font-size:.9rem;
}
.pagination .current{background:var(--ink);color:#fff;border-color:var(--ink);}
.pagination a:hover{border-color:var(--teal);color:var(--teal);}

/* ---------- Single post / product page ---------- */
.single-header{padding:48px 0 24px;}
.single-header .card-meta{margin-bottom:10px;}
.single-header h1{font-size:clamp(1.9rem,1.3rem + 2.4vw,2.7rem);}
.single-hero-img{
  width:100%;max-height:460px;object-fit:cover;border-radius:var(--radius);
  margin:20px 0 8px;border:1px solid var(--border);
}
.prose{font-size:1.02rem;}
.prose :is(h2,h3){margin-top:1.4em;}
.prose img{border-radius:10px;margin:12px 0;}
.prose a{text-decoration:underline;}
.prose ul,.prose ol{padding-left:1.4em;margin-bottom:1em;list-style:revert;}
.prose blockquote{
  border-left:3px solid var(--green);margin:1.2em 0;padding:2px 0 2px 18px;color:var(--muted);
}
.prose p{margin-bottom:1em;}

/* ---------- Product single ---------- */
.product-hero{display:grid;grid-template-columns:1fr 1fr;gap:40px;padding:48px 0;align-items:start;}
.product-gallery-main{border-radius:var(--radius);border:1px solid var(--border);overflow:hidden;background:#fff;}
.product-gallery-main img{width:100%;aspect-ratio:1/1;object-fit:cover;}
.product-thumbs{display:flex;gap:10px;margin-top:10px;flex-wrap:wrap;}
.product-thumbs img{
  width:64px;height:64px;object-fit:cover;border-radius:8px;border:1px solid var(--border);cursor:pointer;
}
.product-info .product-price{font-size:1.4rem;margin:10px 0 18px;}
.product-info .cta-row{margin-bottom:24px;}

/* ---------- Back link ---------- */
.back-link{display:inline-block;margin-bottom:14px;font-size:.9rem;color:var(--muted);text-decoration:none;}
.back-link:hover{color:var(--teal);}

@media (max-width:820px){
  .product-hero{grid-template-columns:1fr;}
}