/* Shared styles for the Summit Pool Services blog (/blog/). Tokens match index.html. */
:root{
  --ink:#12304F; --ink-soft:#40597A; --deep:#0E2A47; --blue:#1F64A8; --aqua:#2FB0C4; --sky:#DCEEF8;
  --bg:#F6FAFC; --surface:#FFFFFF; --line:#D5E3EE; --on-deep:#EAF4FB; --on-deep-soft:#A9C6DE;
  --display:"Archivo","Arial Black",system-ui,sans-serif;
  --body:"Source Sans 3","Segoe UI",system-ui,-apple-system,sans-serif;
}
@media (prefers-color-scheme: dark){
  :root:not([data-theme="light"]){
    color-scheme:dark;
    --ink:#E6F0F8; --ink-soft:#A8BDD1; --deep:#081A2C; --blue:#6FB0E8; --aqua:#4CC8DA; --sky:#12324F;
    --bg:#0B1E31; --surface:#10273E; --line:#21405E; --on-deep:#EAF4FB; --on-deep-soft:#9FBAD2;
  }
}
:root[data-theme="dark"]{
  color-scheme:dark;
  --ink:#E6F0F8; --ink-soft:#A8BDD1; --deep:#081A2C; --blue:#6FB0E8; --aqua:#4CC8DA; --sky:#12324F;
  --bg:#0B1E31; --surface:#10273E; --line:#21405E; --on-deep:#EAF4FB; --on-deep-soft:#9FBAD2;
}
*{box-sizing:border-box}
body{margin:0;background:var(--bg);color:var(--ink);font-family:var(--body);font-size:18px;line-height:1.65}
.wrap{max-width:1080px;margin-inline:auto;padding-inline:20px}
h1,h2,h3{font-family:var(--display);font-stretch:112%;line-height:1.1;text-wrap:balance;margin:0}
a{color:inherit}
.label{font-size:.78rem;font-weight:700;letter-spacing:.12em;text-transform:uppercase;color:var(--aqua)}

.top{position:sticky;top:env(safe-area-inset-top,0px);z-index:5;background:color-mix(in srgb,var(--bg) 92%,transparent);backdrop-filter:blur(8px);border-bottom:1px solid var(--line)}
.top .wrap{display:flex;align-items:center;justify-content:space-between;gap:16px;padding-block:10px}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none}
.brand img{width:44px;height:44px;object-fit:contain;background:#fff;border-radius:50%;padding:3px}
.brand span{font-family:var(--display);font-weight:900;font-stretch:112%;font-size:1.05rem;letter-spacing:.02em}
.top nav{display:flex;gap:22px;font-weight:600;font-size:.95rem}
.top nav a{text-decoration:none;color:var(--ink-soft)}
.top nav a:hover,.top nav a[aria-current]{color:var(--ink)}
.btn{display:inline-flex;align-items:center;gap:8px;text-decoration:none;border-radius:999px;padding:12px 22px;border:2px solid transparent;cursor:pointer;font:inherit;font-weight:700}
.btn-primary{background:var(--aqua);color:#06202F}
.btn-primary:hover{filter:brightness(1.07)}
.btn-ghost{border-color:currentColor;background:transparent;color:inherit}
.btn:focus-visible,a:focus-visible{outline:3px solid var(--aqua);outline-offset:3px}
.top .btn{padding:9px 16px;font-size:.95rem}

.page-head{background:var(--deep);color:var(--on-deep);padding-block:52px 60px}
.page-head h1{font-size:clamp(2rem,5.5vw,3.2rem);font-weight:900;margin-top:10px;max-width:22em}
.page-head p.lead{margin-top:14px;color:var(--on-deep-soft);font-size:1.12rem;max-width:36em}
.page-head .meta{margin-top:16px;color:var(--on-deep-soft);font-size:.95rem}

/* blog index */
.posts{display:grid;grid-template-columns:repeat(2,1fr);gap:18px;padding-block:48px 64px}
.post-card{background:var(--surface);border:1px solid var(--line);border-radius:14px;padding:26px;display:grid;gap:10px;align-content:start;text-decoration:none}
.post-card:hover{border-color:var(--aqua)}
.post-card h2{font-size:1.3rem;font-weight:800}
.post-card p{margin:0;color:var(--ink-soft);font-size:1rem}
.post-card .more{font-weight:700;color:var(--blue)}
.empty{grid-column:1/-1;background:var(--surface);border:1px dashed var(--line);border-radius:14px;padding:32px;color:var(--ink-soft)}

/* article */
article.post{max-width:720px;margin-inline:auto;padding:44px 20px 24px}
article.post .answer{background:var(--sky);border-left:4px solid var(--aqua);border-radius:10px;padding:18px 20px;font-size:1.08rem;margin:0 0 30px}
article.post h2{font-size:clamp(1.4rem,3.4vw,1.8rem);font-weight:800;margin:40px 0 12px}
article.post h3{font-size:1.15rem;font-weight:800;margin:26px 0 8px}
article.post p{margin:0 0 16px}
article.post ul,article.post ol{margin:0 0 16px;padding-left:1.3em}
article.post li{margin-bottom:6px}
article.post a{color:var(--blue)}
article.post table{width:100%;border-collapse:collapse;margin:0 0 20px;font-variant-numeric:tabular-nums;font-size:1rem}
article.post .table-wrap{overflow-x:auto}
article.post th,article.post td{text-align:left;padding:10px 12px;border-bottom:1px solid var(--line)}
article.post th{font-size:.78rem;letter-spacing:.08em;text-transform:uppercase;color:var(--ink-soft)}
article.post .faq h3{margin-top:22px}
article.post .sources{font-size:.92rem;color:var(--ink-soft)}
article.post .sources a{word-break:break-word}

.cta{max-width:720px;margin:12px auto 64px;padding-inline:20px}
.cta .box{background:var(--deep);color:var(--on-deep);border-radius:22px;padding:34px;display:grid;gap:12px}
.cta h2{color:#fff;font-size:clamp(1.5rem,4vw,2rem);font-weight:800}
.cta p{margin:0;color:var(--on-deep-soft)}
.cta .ctas{display:flex;flex-wrap:wrap;gap:12px;margin-top:8px}

footer{padding-block:36px;color:var(--ink-soft);font-size:.92rem;border-top:1px solid var(--line)}
footer .wrap{display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px}
footer a{color:var(--ink-soft)}

@media (max-width:900px){.top nav{display:none}}
@media (max-width:640px){.posts{grid-template-columns:1fr}.brand span{display:none}.cta .box{padding:26px}}