/* ── Next Phase Solar · Blog post shared styles ─ */
:root {
  --dark: #0B0E17; --paper: #d9dfe8; --surface: #ffffff; --bdr: #E5E7EB;
  --txt: #111827; --txt-2: #374151; --muted: #6B7280;
  --yellow: #FFAC00; --yellow-h: #E09600; --yellow-dk: #92660A;
  --blue: #00AEEF; --blue-h: #0090CC;
  --green: #16A34A; --green-h: #15803d;
  --accent: #FFAC00;           /* overridden per cluster on <body class> */
  --accent-rgb: 255,172,0;
  --fh: 'Barlow Condensed', system-ui, sans-serif;
  --fb: 'Inter', system-ui, sans-serif;
  --fm: 'JetBrains Mono', ui-monospace, monospace;
  --r: 12px; --touch: 44px;
}
body.cluster-residential { --accent: #16A34A; --accent-rgb: 22,163,74; }
body.cluster-commercial  { --accent: #00AEEF; --accent-rgb: 0,174,239; }
body.cluster-electrical  { --accent: #FFAC00; --accent-rgb: 255,172,0; }

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; background: var(--dark); }
body { font-family: var(--fb); font-size: 16px; line-height: 1.65; color: var(--txt); background: var(--paper); -webkit-font-smoothing: antialiased; }
a { color: var(--accent); text-decoration: none; transition: color .15s; }
a:hover { color: color-mix(in srgb, var(--accent) 70%, #000 30%); }
img { max-width: 100%; display: block; }
.container { width: 100%; max-width: 1120px; margin: 0 auto; padding: 0 24px; }
.narrow { max-width: 760px; }

/* Nav (matches site) */
.nav__inner { display: flex; align-items: center; justify-content: space-between; min-height: 68px; gap: 16px; flex-wrap: wrap; }
.nav__logo { display: flex; align-items: center; gap: 12px; color: #fff; text-decoration: none; }
.nav__logo__txt { font-family: var(--fb); font-weight: 700; font-size: 11px; letter-spacing: 0.12em; text-transform: uppercase; line-height: 1.35; color: #fff; }
.nav__logo__txt em { color: var(--yellow); font-style: normal; }
.nav__links { display: none; flex-wrap: wrap; gap: 8px 20px; align-items: center; }
@media (min-width: 900px) { .nav__links { display: flex; } }
.nav__links a { font-size: 13px; font-weight: 500; color: rgba(255,255,255,0.72); }
.nav__links a:hover { color: #fff; }
.nav__cta { display: flex; gap: 10px; align-items: center; flex-shrink: 0; }
.nav__phone { font-size: 13px; font-weight: 600; color: rgba(255,255,255,0.85); }
.btn { display: inline-flex; align-items: center; justify-content: center; min-height: var(--touch); padding: 0 22px; font-family: var(--fb); font-weight: 700; font-size: 13px; text-transform: uppercase; letter-spacing: 0.06em; border-radius: 8px; border: none; cursor: pointer; text-decoration: none; }
.btn-y { background: var(--accent); color: var(--dark); }
.btn-y:hover { background: color-mix(in srgb, var(--accent) 82%, #000 18%); color: var(--dark); }
.btn-lg { min-height: 48px; padding: 0 28px; font-size: 14px; }

/* Article hero */
.post-hero { position: relative; background: var(--dark); margin-top: calc(-1 * (68px + env(safe-area-inset-top, 0px))); padding: calc(68px + 72px + env(safe-area-inset-top, 0px)) 0 72px; overflow: hidden; color: #fff; }
.post-hero::before { content: ""; position: absolute; inset: 0; background: radial-gradient(900px 560px at 78% 18%, rgba(var(--accent-rgb), 0.22), transparent 62%), radial-gradient(700px 420px at 8% 82%, rgba(var(--accent-rgb), 0.09), transparent 65%); z-index: 0; }
.post-hero > * { position: relative; z-index: 1; }
.crumbs { font-size: 12.5px; color: rgba(255,255,255,0.55); margin-bottom: 18px; letter-spacing: 0.04em; text-transform: uppercase; }
.crumbs a { color: rgba(255,255,255,0.85); }
.crumbs a:hover { color: var(--accent); }
.post-hero .cat { display: inline-block; padding: 6px 14px; border-radius: 999px; background: rgba(var(--accent-rgb), 0.14); color: var(--accent); border: 1px solid rgba(var(--accent-rgb), 0.3); font-size: 11.5px; font-weight: 700; letter-spacing: 0.12em; text-transform: uppercase; margin-bottom: 18px; }
.post-hero h1 { font-family: var(--fh); font-weight: 800; font-size: clamp(2.1rem, 5.2vw, 3.4rem); text-transform: uppercase; letter-spacing: -0.03em; line-height: 1.03; margin: 0 0 20px; max-width: 880px; color: #fff; }
.post-hero h1 .acc { color: var(--accent); }
.post-hero .lead { font-size: 17px; color: rgba(255,255,255,0.7); max-width: 740px; line-height: 1.7; }
.post-meta { display: flex; flex-wrap: wrap; gap: 18px; margin-top: 26px; font-size: 13px; color: rgba(255,255,255,0.55); }
.post-meta strong { color: #fff; font-weight: 600; margin-right: 4px; }

/* Body */
.post-body { padding: 64px 0 32px; background: var(--paper); }
.post-body .container { display: grid; gap: 48px; grid-template-columns: 1fr; }
@media (min-width: 960px) { .post-body .container { grid-template-columns: minmax(0,1fr) 280px; } }

.post-main { background: var(--surface); border: 1px solid var(--bdr); border-radius: 16px; padding: 40px 44px; box-shadow: 0 8px 32px rgba(15,23,42,0.05); }
@media (max-width: 600px) { .post-main { padding: 28px 22px; } }

.tldr { background: linear-gradient(180deg, rgba(var(--accent-rgb), 0.08) 0%, rgba(var(--accent-rgb), 0.02) 100%); border: 1px solid rgba(var(--accent-rgb), 0.35); border-left: 4px solid var(--accent); border-radius: 10px; padding: 20px 24px; margin-bottom: 32px; }
.tldr h2 { font-family: var(--fh); font-size: 13px; text-transform: uppercase; letter-spacing: 0.14em; color: var(--accent); margin-bottom: 10px; font-weight: 800; }
.tldr ul { list-style: none; padding: 0; margin: 0; }
.tldr li { position: relative; padding: 4px 0 4px 22px; font-size: 15px; color: var(--txt-2); line-height: 1.6; }
.tldr li::before { content: "→"; position: absolute; left: 0; color: var(--accent); font-weight: 700; }

.post-main h2 { font-family: var(--fh); font-weight: 800; font-size: 28px; text-transform: uppercase; letter-spacing: -0.02em; color: var(--txt); margin: 36px 0 14px; line-height: 1.1; }
.post-main h2:first-child { margin-top: 0; }
.post-main h3 { font-family: var(--fh); font-weight: 700; font-size: 20px; text-transform: uppercase; color: var(--txt); margin: 24px 0 10px; letter-spacing: -0.01em; }
.post-main p { color: var(--txt-2); margin-bottom: 14px; font-size: 16px; line-height: 1.75; }
.post-main ul, .post-main ol { padding-left: 22px; margin-bottom: 14px; color: var(--txt-2); }
.post-main li { margin-bottom: 6px; line-height: 1.65; }
.post-main strong { color: var(--txt); font-weight: 700; }
.post-main em { color: var(--txt-2); font-style: italic; }

.fact { background: #fffbeb; border: 1px solid #fde68a; border-left: 3px solid var(--accent); border-radius: 8px; padding: 14px 18px; margin: 18px 0; font-size: 15px; color: var(--txt-2); }
.fact strong { color: var(--txt); }

.ptable { width: 100%; border-collapse: collapse; margin: 18px 0; font-size: 14px; border-radius: 10px; overflow: hidden; border: 1px solid var(--bdr); }
.ptable th, .ptable td { padding: 10px 14px; text-align: left; border-bottom: 1px solid var(--bdr); vertical-align: top; }
.ptable th { background: #f3f4f6; font-weight: 700; text-transform: uppercase; font-size: 11px; letter-spacing: 0.08em; color: var(--muted); }
.ptable tr:last-child td { border-bottom: 0; }
.ptable .good { color: #16a34a; font-weight: 700; }
.ptable .bad { color: #dc2626; font-weight: 700; }

.faq { background: #fff; border: 1px solid var(--bdr); border-radius: 10px; padding: 16px 20px; margin-bottom: 10px; }
.faq summary { cursor: pointer; font-family: var(--fh); font-weight: 700; font-size: 17px; color: var(--txt); list-style: none; display: flex; justify-content: space-between; align-items: center; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; color: var(--accent); font-weight: 700; font-size: 22px; margin-left: 14px; transition: transform 0.2s; }
.faq[open] summary::after { transform: rotate(45deg); }
.faq p { margin-top: 10px; color: var(--txt-2); font-size: 14.5px; line-height: 1.7; }

.callout-cta { margin: 36px 0 0; padding: 28px 26px; background: linear-gradient(135deg, var(--dark) 0%, #1a1f35 100%); color: #fff; border-radius: 12px; text-align: center; }
.callout-cta h3 { font-family: var(--fh); font-size: 22px; text-transform: uppercase; margin-bottom: 8px; color: #fff; }
.callout-cta p { color: rgba(255,255,255,0.68); font-size: 14px; margin-bottom: 16px; }

/* Author block */
.author-block { display: flex; align-items: center; gap: 16px; padding: 18px 20px; border: 1px solid var(--bdr); background: #fff; border-radius: 12px; margin-top: 32px; }
.author-block .ab-avatar { width: 52px; height: 52px; border-radius: 50%; background: linear-gradient(135deg, var(--accent) 0%, color-mix(in srgb, var(--accent) 60%, #000 40%) 100%); display: flex; align-items: center; justify-content: center; color: var(--dark); font-family: var(--fh); font-weight: 800; font-size: 20px; flex-shrink: 0; }
.author-block .ab-txt { font-size: 14px; color: var(--txt-2); line-height: 1.5; }
.author-block .ab-txt strong { color: var(--txt); display: block; margin-bottom: 2px; }

/* Aside / sticky */
.post-aside { align-self: start; }
@media (min-width: 960px) { .post-aside { position: sticky; top: 88px; } }
.aside-card { background: var(--surface); border: 1px solid var(--bdr); border-radius: 14px; padding: 20px 22px; margin-bottom: 16px; }
.aside-card h4 { font-family: var(--fh); font-size: 13px; text-transform: uppercase; color: var(--muted); letter-spacing: 0.1em; margin-bottom: 12px; }
.aside-card a { display: block; font-size: 14px; color: var(--txt-2); padding: 5px 0; line-height: 1.45; }
.aside-card a:hover { color: var(--accent); }
.aside-cta { background: var(--dark); color: #fff; border-radius: 14px; padding: 22px 22px; }
.aside-cta h4 { font-family: var(--fh); font-size: 18px; color: #fff; text-transform: uppercase; margin-bottom: 8px; letter-spacing: -0.01em; }
.aside-cta p { font-size: 13px; color: rgba(255,255,255,0.6); margin-bottom: 16px; line-height: 1.5; }

/* Related */
.related { padding: 48px 0 72px; background: var(--paper); }
.related h2 { font-family: var(--fh); font-size: 24px; text-transform: uppercase; color: var(--txt); margin-bottom: 22px; letter-spacing: -0.02em; }
.related-grid { display: grid; gap: 16px; grid-template-columns: 1fr; }
@media (min-width: 720px) { .related-grid { grid-template-columns: repeat(3, 1fr); } }
.rel-card { background: var(--surface); border: 1px solid var(--bdr); border-radius: 12px; padding: 20px 20px; transition: transform .25s ease, border-color .2s ease, box-shadow .2s ease; }
.rel-card:hover { transform: translateY(-3px); border-color: var(--accent); box-shadow: 0 12px 32px rgba(15,23,42,0.08); }
.rel-card .rc-cat { font-size: 11px; text-transform: uppercase; letter-spacing: 0.1em; color: var(--accent); font-weight: 700; margin-bottom: 8px; display: block; }
.rel-card h3 { font-family: var(--fh); font-size: 17px; font-weight: 700; color: var(--txt); text-transform: uppercase; line-height: 1.15; margin-bottom: 8px; letter-spacing: -0.01em; }
.rel-card p { font-size: 13.5px; color: var(--muted); line-height: 1.55; }

/* Footer (reuse) */
.site-footer { position: relative; background: linear-gradient(180deg, #0b0e17 0%, #050810 100%); padding: 72px 0 0; overflow: hidden; border-top: 1px solid rgba(var(--accent-rgb), 0.18); }
.footer-inner { position: relative; z-index: 2; }
.footer-top { display: grid; grid-template-columns: minmax(260px, 1.05fr) 2.6fr; gap: 44px; padding-bottom: 40px; }
.footer-brand { max-width: 340px; }
.footer-logo { display: inline-flex; align-items: center; gap: 12px; text-decoration: none; color: #fff; margin-bottom: 16px; }
.footer-logo__txt { font-family: var(--fh); font-weight: 800; font-size: 16px; line-height: 1.15; color: #fff; }
.footer-logo__txt em { display: inline-block; color: #FFAC00; font-style: normal; font-size: 11px; letter-spacing: 0.2em; margin-top: 2px; }
.footer-tagline { font-size: 13.5px; line-height: 1.6; color: rgba(255,255,255,0.5); margin: 0; }
.footer-cols { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 28px 24px; }
.footer-col h4 { font-family: var(--fh); font-weight: 800; font-size: 13px; color: #fff; margin: 0 0 16px; text-transform: uppercase; letter-spacing: 0.14em; }
.footer-col a, .footer-col span { display: block; font-size: 13px; color: rgba(255,255,255,0.5); text-decoration: none; padding: 5px 0; }
.footer-col a:hover { color: #fff; }
.footer-divider { height: 1px; background: rgba(255,255,255,0.08); }
.footer-meta { display: flex; justify-content: space-between; align-items: center; gap: 12px; padding: 22px 0 calc(56px + env(safe-area-inset-bottom, 0px)); font-size: 12px; color: rgba(255,255,255,0.42); flex-wrap: wrap; }
.footer-meta a { color: rgba(255,255,255,0.6); }
.footer-watermark { position: absolute; left: 0; right: 0; bottom: -1.5vw; font-family: var(--fh); font-weight: 900; font-size: clamp(84px, 17vw, 240px); line-height: 0.82; letter-spacing: -0.03em; text-align: center; color: transparent; background: linear-gradient(180deg, rgba(var(--accent-rgb), 0.18) 0%, rgba(var(--accent-rgb), 0) 85%); -webkit-background-clip: text; background-clip: text; white-space: nowrap; pointer-events: none; user-select: none; z-index: 1; }
@media (max-width: 900px) { .site-footer { padding-top: 56px; } .footer-top { grid-template-columns: 1fr; gap: 32px; padding-bottom: 32px; } .footer-cols { grid-template-columns: repeat(2, 1fr); gap: 26px 20px; } .footer-watermark { font-size: 20vw; bottom: -2vw; } .footer-meta { justify-content: flex-start; padding: 18px 0 calc(36px + env(safe-area-inset-bottom, 0px)); } }
