/* ==========================================================================
   GoodGreenSolar — shared stylesheet
   Self-contained (no external fonts/CDN) for reliable shared hosting.
   ========================================================================== */

:root{
  /* Brand palette — sampled directly from GoodGreenSolar_Logo.png */
  --green-900:#0f4a2b;
  --green-800:#1e7846;
  --green-700:#28783c;
  --green-600:#32823c;
  --leaf:#64a03c;
  --leaf-light:#74a83c;
  --leaf-dark:#4f8c30;
  --teal-900:#0d4d52;
  --teal-700:#1e828c;
  --teal-600:#1e96aa;
  --panel-blue:#1496b4;
  --navy:#084870;          /* wordmark "GreenSolar" */
  --navy-deep:#06334f;
  --sun:#fac828;
  --sun-deep:#faaa14;

  /* Neutrals */
  --ink:#123a52;
  --body:#3c4f5c;
  --muted:#6d8390;
  --line:#e2eae8;
  --bg:#f6f9f3;
  --bg-soft:#edf4ea;
  --card:#ffffff;
  --white:#ffffff;

  --radius:16px;
  --radius-sm:10px;
  --radius-lg:24px;
  --shadow-sm:0 2px 10px rgba(20,60,40,.06);
  --shadow:0 14px 40px rgba(20,60,40,.10);
  --shadow-lg:0 26px 70px rgba(20,60,40,.16);
  --max:1180px;

  --sans:ui-sans-serif,system-ui,-apple-system,"Segoe UI",Roboto,Helvetica,Arial,"Apple Color Emoji","Segoe UI Emoji";
  --serif:"Iowan Old Style","Palatino Linotype",Palatino,Georgia,"Times New Roman",serif;
}

*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--sans);
  color:var(--body);
  background:var(--bg);
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img{max-width:100%;height:auto;display:block}
a{color:var(--teal-700);text-decoration:none}
a:hover{color:var(--green-700)}
h1,h2,h3,h4{color:var(--ink);line-height:1.18;margin:0 0 .5em}
h1,h2{font-family:var(--serif);letter-spacing:-.4px}
p{margin:0 0 1em}
.wrap{max-width:var(--max);margin:0 auto;padding:0 22px}
.narrow{max-width:820px;margin:0 auto;padding:0 22px}

/* ---- Utility ------------------------------------------------------------ */
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:12px;font-weight:800;
  letter-spacing:1.4px;text-transform:uppercase;color:var(--green-700)}
.center{text-align:center}
.muted{color:var(--muted)}
.pill{display:inline-flex;align-items:center;gap:7px;padding:5px 12px;border-radius:999px;
  font-size:12px;font-weight:700;background:var(--bg-soft);color:var(--green-800);border:1px solid var(--line)}
.pill.sun{background:#fdf4d6;color:#8a6a09;border-color:#f3e3a8}
.pill.teal{background:#e0f2ef;color:var(--teal-900);border-color:#c4e6e1}

.btn{display:inline-flex;align-items:center;justify-content:center;gap:9px;
  padding:12px 20px;border-radius:999px;font-weight:700;font-size:15px;cursor:pointer;
  border:1px solid transparent;transition:transform .08s ease,box-shadow .18s ease,background .18s ease}
.btn:hover{transform:translateY(-1px)}
.btn-primary{background:linear-gradient(135deg,var(--green-600),var(--teal-600));color:#fff;
  box-shadow:0 10px 24px rgba(26,139,128,.28)}
.btn-primary:hover{color:#fff;box-shadow:0 14px 30px rgba(26,139,128,.36)}
.btn-ghost{background:#fff;color:var(--green-800);border-color:var(--line);box-shadow:var(--shadow-sm)}
.btn-ghost:hover{color:var(--green-800);border-color:var(--leaf)}
.btn-sun{background:linear-gradient(135deg,var(--sun),var(--sun-deep));color:#4a3a00}
.btn-sun:hover{color:#4a3a00}

/* ---- Header ------------------------------------------------------------- */
.site-header{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.86);
  backdrop-filter:saturate(1.4) blur(12px);border-bottom:1px solid var(--line)}
.nav{display:flex;align-items:center;justify-content:space-between;gap:20px;height:88px}
.brand{display:flex;align-items:center;gap:11px;font-weight:800;font-size:21px;color:var(--navy);letter-spacing:-.3px}
.brand:hover{color:var(--navy)}
.brand .logo{width:60px;height:60px;flex:none;object-fit:contain}
.brand b{color:var(--leaf-light);font-weight:800}
.brand .tm{font-size:10px;vertical-align:super;color:var(--muted);font-weight:700}
.nav-links{display:flex;align-items:center;gap:4px;list-style:none;margin:0;padding:0}
.nav-links a{display:block;padding:9px 14px;border-radius:999px;font-size:15px;font-weight:600;color:var(--body)}
.nav-links a:hover{background:var(--bg-soft);color:var(--green-800)}
.nav-links a.active{color:var(--green-800);background:var(--bg-soft)}
.nav-cta{display:flex;align-items:center;gap:10px}
.nav-toggle{display:none;background:none;border:1px solid var(--line);border-radius:10px;
  width:44px;height:42px;cursor:pointer;align-items:center;justify-content:center}
.nav-toggle span,.nav-toggle span::before,.nav-toggle span::after{content:"";display:block;
  width:20px;height:2px;background:var(--ink);position:relative;transition:.2s}
.nav-toggle span::before{position:absolute;top:-6px}
.nav-toggle span::after{position:absolute;top:6px}

@media(max-width:900px){
  .nav-toggle{display:inline-flex}
  .nav-links{position:absolute;top:88px;left:0;right:0;flex-direction:column;align-items:stretch;
    gap:2px;background:#fff;border-bottom:1px solid var(--line);padding:12px 16px 18px;
    box-shadow:var(--shadow);display:none}
  .nav-links.open{display:flex}
  .nav-links a{padding:12px 14px}
  .nav .nav-cta .btn-primary{display:none}
}

/* ---- Hero --------------------------------------------------------------- */
.hero{background:
    radial-gradient(1000px 460px at 85% -10%, rgba(108,191,63,.16), transparent 60%),
    radial-gradient(900px 520px at 5% 0%, rgba(26,139,128,.12), transparent 55%),
    linear-gradient(180deg,#fbfdf9,var(--bg));
  border-bottom:1px solid var(--line)}
.hero-inner{display:grid;grid-template-columns:1.05fr .95fr;gap:44px;align-items:center;
  padding:64px 0 60px}
.hero h1{font-size:clamp(34px,5vw,56px);margin:14px 0 16px;color:var(--ink)}
.hero h1 .accent{color:var(--teal-700)}
.hero .lead{font-size:19px;color:var(--body);max-width:52ch;margin-bottom:26px}
.hero-cta{display:flex;gap:12px;flex-wrap:wrap}
.hero-stats{display:flex;gap:26px;margin-top:30px;flex-wrap:wrap}
.hero-stats .stat b{display:block;font-family:var(--serif);font-size:30px;color:var(--green-700);line-height:1}
.hero-stats .stat span{font-size:13px;color:var(--muted)}
.hero-art{position:relative}
.hero-art .panel-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);
  box-shadow:var(--shadow-lg);overflow:hidden}
@media(max-width:940px){
  .hero-inner{grid-template-columns:1fr;gap:30px;padding:44px 0 40px}
  .hero-art{order:-1}
}

/* ---- Section scaffolding ------------------------------------------------ */
.section{padding:64px 0}
.section.alt{background:var(--bg-soft);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section.tint{background:linear-gradient(180deg,#fff,var(--bg))}
.section-head{max-width:720px;margin:0 0 34px}
.section-head.center{margin-left:auto;margin-right:auto}
.section-head h2{font-size:clamp(26px,3.4vw,38px);margin:10px 0 10px}
.section-head p{font-size:17px;color:var(--muted);margin:0}

/* ---- Cards / article grid ---------------------------------------------- */
.grid{display:grid;gap:22px}
.grid.cols-3{grid-template-columns:repeat(3,1fr)}
.grid.cols-2{grid-template-columns:repeat(2,1fr)}
.grid.cols-4{grid-template-columns:repeat(4,1fr)}
@media(max-width:980px){.grid.cols-3,.grid.cols-4{grid-template-columns:repeat(2,1fr)}}
@media(max-width:640px){.grid.cols-2,.grid.cols-3,.grid.cols-4{grid-template-columns:1fr}}

.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
  overflow:hidden;box-shadow:var(--shadow-sm);transition:transform .12s ease,box-shadow .18s ease;
  display:flex;flex-direction:column}
.card:hover{transform:translateY(-3px);box-shadow:var(--shadow)}
.card .thumb{aspect-ratio:16/9;width:100%;background:var(--bg-soft);display:block}
.card .thumb svg{width:100%;height:100%;display:block}
.card .thumb img{width:100%;height:100%;object-fit:cover;display:block}
.card-body{padding:18px 18px 20px;display:flex;flex-direction:column;flex:1}
.card .kicker{font-size:12px;font-weight:800;letter-spacing:.6px;text-transform:uppercase;
  color:var(--teal-700);margin-bottom:8px}
.card h3{font-family:var(--sans);font-size:18px;letter-spacing:-.2px;margin:0 0 8px}
.card h3 a{color:var(--ink)}
.card h3 a:hover{color:var(--green-700)}
.card p{font-size:14.5px;color:var(--muted);margin:0 0 14px}
.card .meta{margin-top:auto;display:flex;align-items:center;justify-content:space-between;
  font-size:12.5px;color:var(--muted)}
.card .read{font-weight:700;color:var(--green-700)}

.tag-row{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:8px}

/* ---- Feature / value tiles --------------------------------------------- */
.tiles{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
@media(max-width:860px){.tiles{grid-template-columns:1fr}}
.tile{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:24px;
  box-shadow:var(--shadow-sm)}
.tile .ic{width:48px;height:48px;border-radius:12px;display:flex;align-items:center;justify-content:center;
  background:var(--bg-soft);margin-bottom:14px}
.tile h3{font-family:var(--sans);font-size:18px;margin:0 0 6px}
.tile p{font-size:14.5px;color:var(--muted);margin:0}

/* ---- Data / charts ------------------------------------------------------ */
.chart-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:22px 22px 18px;box-shadow:var(--shadow-sm)}
.chart-card h3{font-family:var(--sans);font-size:17px;margin:0 0 4px}
.chart-card .sub{font-size:13px;color:var(--muted);margin:0 0 18px}
.legend{display:flex;flex-wrap:wrap;gap:14px;margin:6px 0 4px;font-size:13px;color:var(--body)}
.legend span{display:inline-flex;align-items:center;gap:7px}
.legend i{width:12px;height:12px;border-radius:3px;display:inline-block}

.bars{display:flex;align-items:flex-end;gap:14px;height:230px;padding-top:10px;
  border-bottom:2px solid var(--line)}
.bar-col{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:flex-end;gap:8px;height:100%}
.bar{width:100%;max-width:54px;border-radius:8px 8px 0 0;position:relative;
  transition:height 1s cubic-bezier(.16,1,.3,1);min-height:2px}
.bar .val{position:absolute;top:-22px;left:0;right:0;text-align:center;font-size:12px;font-weight:700;color:var(--ink)}
.bar-label{font-size:12.5px;color:var(--muted);font-weight:600;text-align:center}

/* Grouped bars */
.bar-group{flex:1;display:flex;align-items:flex-end;justify-content:center;gap:5px;height:100%}
.bar-group .bar{max-width:26px}

/* Data table */
.data-table{width:100%;border-collapse:collapse;font-size:14.5px}
.data-table caption{text-align:left;font-weight:700;color:var(--ink);margin-bottom:12px;font-size:15px}
.data-table th,.data-table td{padding:11px 12px;text-align:left;border-bottom:1px solid var(--line)}
.data-table thead th{font-size:12px;text-transform:uppercase;letter-spacing:.6px;color:var(--muted)}
.data-table tbody tr:hover{background:var(--bg-soft)}
.data-table td.num{font-variant-numeric:tabular-nums;font-weight:700;color:var(--ink)}
.meter{height:9px;border-radius:999px;background:var(--bg-soft);overflow:hidden;min-width:90px}
.meter i{display:block;height:100%;border-radius:999px;background:linear-gradient(90deg,var(--leaf),var(--green-600))}

/* ---- Callouts / notes --------------------------------------------------- */
.note{border-left:4px solid var(--leaf);background:var(--bg-soft);border-radius:0 12px 12px 0;
  padding:16px 18px;font-size:14.5px;color:var(--body)}
.note.warn{border-color:var(--sun);background:#fdf7e3}
.note strong{color:var(--ink)}

.callout{background:linear-gradient(135deg,var(--green-800),var(--teal-700));color:#eafff4;
  border-radius:var(--radius-lg);padding:44px;box-shadow:var(--shadow)}
.callout h2{color:#fff}
.callout p{color:rgba(255,255,255,.86);font-size:17px}
.callout .btn-ghost{background:#fff;color:var(--green-800)}

/* ---- Cost / calculator table ------------------------------------------- */
.cost-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
@media(max-width:860px){.cost-grid{grid-template-columns:1fr}}
.cost-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:24px;
  box-shadow:var(--shadow-sm);text-align:center}
.cost-card .big{font-family:var(--serif);font-size:40px;color:var(--green-700);line-height:1;margin:6px 0}
.cost-card .lbl{font-size:14px;color:var(--muted)}

/* ---- Article typography ------------------------------------------------- */
.article-hero{background:linear-gradient(180deg,#fbfdf9,var(--bg));border-bottom:1px solid var(--line);
  padding:48px 0 40px}
.article-hero h1{font-size:clamp(30px,4.4vw,46px);max-width:20ch;margin:14px 0 14px}
.article-meta{display:flex;flex-wrap:wrap;gap:16px;font-size:14px;color:var(--muted)}
.prose{font-size:17.5px;color:var(--body)}
.prose h2{font-size:27px;margin:1.8em 0 .5em}
.prose h3{font-size:20px;font-family:var(--sans);margin:1.5em 0 .4em}
.prose ul,.prose ol{padding-left:1.3em;margin:0 0 1.2em}
.prose li{margin-bottom:.5em}
.prose figure{margin:1.6em 0}
.prose figure img,.prose figure svg{border-radius:var(--radius);border:1px solid var(--line);
  width:100%;height:auto}
.prose figcaption{font-size:13.5px;color:var(--muted);margin-top:8px;text-align:center}
.prose blockquote{margin:1.4em 0;padding:4px 0 4px 22px;border-left:4px solid var(--leaf);
  font-size:19px;color:var(--ink);font-style:italic}

/* ---- Newsletter / contact ---------------------------------------------- */
.form-row{display:flex;gap:10px;flex-wrap:wrap}
.form-row input,.form-field input,.form-field textarea,.form-field select{
  width:100%;padding:13px 14px;border:1px solid var(--line);border-radius:12px;font:inherit;
  color:var(--ink);background:#fff}
.form-row input{flex:1;min-width:220px}
.form-field{margin-bottom:16px}
.form-field label{display:block;font-weight:700;font-size:14px;color:var(--ink);margin-bottom:6px}
input:focus,textarea:focus,select:focus{outline:2px solid var(--leaf);outline-offset:1px;border-color:var(--leaf)}
/* honeypot — off-screen for people, still fillable by bots */
.hp{position:absolute;left:-9999px;width:1px;height:1px;overflow:hidden}

/* ---- Footer ------------------------------------------------------------- */
.site-footer{background:var(--green-900);color:#c7ddcf;margin-top:0}
.footer-top{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:32px;padding:56px 0 40px}
@media(max-width:860px){.footer-top{grid-template-columns:1fr 1fr}}
@media(max-width:520px){.footer-top{grid-template-columns:1fr}}
.site-footer h4{color:#fff;font-family:var(--sans);font-size:14px;letter-spacing:.5px;
  text-transform:uppercase;margin:0 0 14px}
.site-footer a{color:#c7ddcf}
.site-footer a:hover{color:#fff}
.footer-links{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:9px;font-size:14.5px}
.footer-brand .brand{color:#fff}
.footer-brand .brand b{color:#8fc74a}
.footer-brand p{color:#a9c6b3;font-size:14.5px;max-width:32ch;margin-top:12px}
.footer-bottom{border-top:1px solid rgba(255,255,255,.12);padding:18px 0;display:flex;
  justify-content:space-between;align-items:center;gap:12px;flex-wrap:wrap;font-size:13px;color:#93b39f}
.footer-bottom a{color:#93b39f}
.socials{display:flex;gap:10px}
.socials a{width:36px;height:36px;border-radius:10px;background:rgba(255,255,255,.08);
  display:flex;align-items:center;justify-content:center}
.socials a:hover{background:rgba(255,255,255,.16)}

/* ---- Misc breadcrumb / back -------------------------------------------- */
.crumbs{font-size:13.5px;color:var(--muted);padding:16px 0}
.crumbs a{color:var(--teal-700)}

/* ---- Footnotes & sources ------------------------------------------------ */
.fn{font-size:.62em;vertical-align:super;line-height:0;font-weight:800;margin-left:1px}
.fn a{color:var(--teal-600);text-decoration:none;padding:0 1px}
.fn a:hover{text-decoration:underline}
.sources{background:var(--bg-soft);border:1px solid var(--line);border-radius:var(--radius);
  padding:24px 26px;margin-top:34px}
.sources h3{font-family:var(--sans);font-size:15px;letter-spacing:.4px;text-transform:uppercase;
  color:var(--ink);margin:0 0 14px}
.sources ol{margin:0;padding-left:20px;font-size:14px;color:var(--body)}
.sources li{margin-bottom:10px;line-height:1.55}
.sources li:target{background:#fdf7e3;border-radius:4px;box-shadow:0 0 0 6px #fdf7e3}
.sources a{word-break:break-word}
.sources .as-of{font-size:13px;color:var(--muted);margin:14px 0 0}
.data-note{font-size:12.5px;color:var(--muted);margin:12px 0 0}

/* ---- Reveal on scroll --------------------------------------------------- */
.reveal{opacity:0;transform:translateY(16px);transition:opacity .6s ease,transform .6s ease}
.reveal.in{opacity:1;transform:none}
@media(prefers-reduced-motion:reduce){
  .reveal{opacity:1;transform:none;transition:none}
  html{scroll-behavior:auto}
  .bar{transition:none}
}