/* =========================================================
   SolarCostGuide — Design System
   Vibe: Editorial Luxury × Energy. Deep graphite bg, warm gold
   sun-accent, muted sage secondary. Fraunces + DM Sans pairing.
   ========================================================= */

:root {
  --bg: #0c0d0a;
  --bg-elevated: #131510;
  --bg-card: #16180f;
  --bg-card-inner: #1b1d14;
  --hairline: rgba(245, 241, 232, 0.08);
  --hairline-strong: rgba(245, 241, 232, 0.14);

  --ink: #f5f1e8;
  --ink-soft: #cbc7ba;
  --ink-mute: #8c8a7c;

  --gold: #e8a53d;
  --gold-soft: #f0c98a;
  --sage: #8fbf9f;
  --sage-soft: #b7dcc4;
  --clay: #c97b5a;

  --radius-xl: 2rem;
  --radius-lg: 1.5rem;
  --radius-md: 1rem;
  --radius-sm: 0.6rem;

  --ease: cubic-bezier(0.32, 0.72, 0, 1);
  --ease-soft: cubic-bezier(0.22, 1, 0.36, 1);

  --font-display: "Fraunces", Georgia, serif;
  --font-body: "DM Sans", -apple-system, sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

/* Fixed grain overlay — never on scrolling content */
.grain {
  position: fixed; inset: 0; z-index: 60; pointer-events: none;
  opacity: 0.035; mix-blend-mode: overlay;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='120' height='120'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

.bg-mesh {
  position: fixed; inset: 0; z-index: 0; pointer-events: none;
  background:
    radial-gradient(ellipse 60% 40% at 15% -5%, rgba(232,165,61,0.10), transparent 60%),
    radial-gradient(ellipse 50% 35% at 100% 15%, rgba(143,191,159,0.06), transparent 60%);
}

h1, h2, h3, h4 { font-family: var(--font-display); font-weight: 500; line-height: 1.08; margin: 0 0 0.5em; letter-spacing: -0.01em; }
h1 { font-size: clamp(2.6rem, 5.6vw, 4.6rem); font-weight: 460; }
h2 { font-size: clamp(1.9rem, 3.4vw, 2.9rem); }
h3 { font-size: clamp(1.3rem, 2vw, 1.7rem); }
p { color: var(--ink-soft); margin: 0 0 1.1em; }
a { color: var(--gold-soft); text-decoration: none; }
strong { color: var(--ink); font-weight: 600; }
.lead { font-size: 1.2rem; color: var(--ink); line-height: 1.65; }

.container { max-width: 1180px; margin: 0 auto; padding: 0 clamp(1.25rem, 4vw, 2.5rem); position: relative; z-index: 1; }
.container-narrow { max-width: 800px; margin: 0 auto; padding: 0 clamp(1.25rem, 4vw, 2.5rem); position: relative; z-index: 1; }
section { padding: clamp(3.5rem, 8vw, 7rem) 0; position: relative; z-index: 1; }

.eyebrow {
  display: inline-flex; align-items: center; gap: 0.5rem;
  border: 1px solid var(--hairline-strong); border-radius: 999px;
  padding: 0.35rem 0.9rem; font-size: 0.68rem; text-transform: uppercase;
  letter-spacing: 0.2em; color: var(--gold-soft); font-weight: 600;
  background: rgba(232,165,61,0.06);
}
.eyebrow .dot { width: 6px; height: 6px; border-radius: 50%; background: var(--gold); }

/* ---------- Nav ---------- */
.nav-wrap { position: sticky; top: 0; z-index: 50; padding: 1rem clamp(1rem, 3vw, 2rem) 0; }
.nav-pill {
  max-width: 1180px; margin: 0 auto; display: flex; align-items: center; justify-content: space-between;
  background: rgba(19, 21, 16, 0.72); backdrop-filter: blur(20px); -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--hairline-strong); border-radius: 999px;
  padding: 0.6rem 0.6rem 0.6rem 1.4rem;
}
.brand { display: flex; align-items: center; gap: 0.55rem; font-family: var(--font-display); font-size: 1.15rem; color: var(--ink); font-weight: 600; }
.brand .mark { width: 26px; height: 26px; border-radius: 50%; background: linear-gradient(135deg, var(--gold), var(--clay)); flex-shrink: 0; box-shadow: 0 0 18px rgba(232,165,61,0.4); }
.nav-links { display: flex; align-items: center; gap: 1.7rem; }
.nav-links a { color: var(--ink-soft); font-size: 0.9rem; font-weight: 500; transition: color 0.4s var(--ease); }
.nav-links a:hover { color: var(--ink); }
.nav-cta {
  display: inline-flex; align-items: center; gap: 0.5rem; background: var(--ink); color: var(--bg);
  border-radius: 999px; padding: 0.55rem 0.55rem 0.55rem 1.15rem; font-size: 0.85rem; font-weight: 600;
  transition: transform 0.5s var(--ease), background 0.4s var(--ease);
}
.nav-cta:hover { transform: scale(1.03); background: var(--gold); }
.nav-cta .icn { width: 26px; height: 26px; border-radius: 50%; background: rgba(12,13,10,0.12); display: flex; align-items: center; justify-content: center; transition: transform 0.5s var(--ease); }
.nav-cta:hover .icn { transform: translate(2px,-2px); }
.nav-toggle { display: none; }

@media (max-width: 860px) {
  .nav-links { display: none; }
  .nav-toggle { display: flex; }
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; gap: 0.6rem; border-radius: 999px; font-weight: 600;
  padding: 0.85rem 0.85rem 0.85rem 1.5rem; font-size: 0.92rem; transition: transform 0.5s var(--ease), background 0.4s var(--ease), border-color 0.4s var(--ease);
  border: 1px solid transparent; cursor: pointer;
}
.btn .icn { width: 30px; height: 30px; border-radius: 50%; display: flex; align-items: center; justify-content: center; transition: transform 0.5s var(--ease); flex-shrink:0; }
.btn:hover .icn { transform: translate(2px, -2px); }
.btn:active { transform: scale(0.98); }
.btn-primary { background: var(--gold); color: #201404; }
.btn-primary .icn { background: rgba(32,20,4,0.15); }
.btn-primary:hover { background: var(--gold-soft); }
.btn-ghost { background: transparent; border-color: var(--hairline-strong); color: var(--ink); }
.btn-ghost .icn { background: rgba(245,241,232,0.08); }
.btn-ghost:hover { border-color: var(--gold); color: var(--gold-soft); }

/* ---------- Double-bezel card ---------- */
.bezel { padding: 0.4rem; border-radius: var(--radius-xl); background: rgba(245,241,232,0.035); border: 1px solid var(--hairline); }
.bezel-inner { border-radius: calc(var(--radius-xl) - 0.4rem); background: var(--bg-card); padding: clamp(1.6rem, 3vw, 2.4rem); box-shadow: inset 0 1px 1px rgba(255,255,255,0.05); border: 1px solid var(--hairline); }

.card {
  background: var(--bg-card); border: 1px solid var(--hairline); border-radius: var(--radius-lg);
  padding: clamp(1.5rem, 2.6vw, 2.1rem); transition: transform 0.6s var(--ease), border-color 0.5s var(--ease);
}
.card:hover { transform: translateY(-4px); border-color: var(--hairline-strong); }

/* ---------- Hero ---------- */
.hero { padding-top: clamp(4rem, 9vw, 7rem); }
.hero-grid { display: grid; grid-template-columns: 1.1fr 0.9fr; gap: clamp(2rem, 4vw, 3.5rem); align-items: center; }
@media (max-width: 900px) { .hero-grid { grid-template-columns: 1fr; } }
.stat-strip { display: flex; flex-wrap: wrap; gap: 0.6rem; margin-top: 1.5rem; }
.stat-chip { border: 1px solid var(--hairline-strong); border-radius: 999px; padding: 0.5rem 1rem; font-size: 0.8rem; color: var(--ink-soft); background: rgba(245,241,232,0.03); }
.stat-chip strong { color: var(--gold-soft); }

/* ---------- Bento / grid ---------- */
.bento { display: grid; grid-template-columns: repeat(12, 1fr); gap: 1.1rem; }
.bento .span-8 { grid-column: span 8; }
.bento .span-4 { grid-column: span 4; }
.bento .span-6 { grid-column: span 6; }
.bento .span-12 { grid-column: span 12; }
@media (max-width: 860px) { .bento .span-8, .bento .span-4, .bento .span-6 { grid-column: span 12; } }

.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.1rem; }
.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1.1rem; }
@media (max-width: 860px) { .grid-3, .grid-2 { grid-template-columns: 1fr; } }

/* ---------- State list / chips ---------- */
.state-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(230px, 1fr)); gap: 0.9rem; }
.state-card {
  display: flex; align-items: center; justify-content: space-between; gap: 1rem;
  background: var(--bg-card); border: 1px solid var(--hairline); border-radius: var(--radius-md);
  padding: 1.1rem 1.3rem; transition: transform 0.5s var(--ease), border-color 0.4s var(--ease);
}
.state-card:hover { transform: translateX(3px); border-color: var(--gold); }
.state-card .name { color: var(--ink); font-weight: 600; font-size: 0.98rem; }
.state-card .sub { color: var(--ink-mute); font-size: 0.78rem; margin-top: 0.15rem; }
.state-card .price { color: var(--gold-soft); font-family: var(--font-display); font-size: 1.15rem; }
.region-label { color: var(--ink-mute); text-transform: uppercase; letter-spacing: 0.16em; font-size: 0.72rem; font-weight: 600; margin: 2.2rem 0 0.9rem; }

/* ---------- Tier badge ---------- */
.tier-badge { display: inline-flex; align-items: center; gap: 0.4rem; border-radius: 999px; padding: 0.3rem 0.75rem; font-size: 0.72rem; font-weight: 700; text-transform: uppercase; letter-spacing: 0.08em; }
.tier-strong { background: rgba(143,191,159,0.14); color: var(--sage-soft); border: 1px solid rgba(143,191,159,0.3); }
.tier-moderate { background: rgba(232,165,61,0.13); color: var(--gold-soft); border: 1px solid rgba(232,165,61,0.28); }
.tier-developing { background: rgba(201,123,90,0.14); color: #e3a488; border: 1px solid rgba(201,123,90,0.3); }

/* ---------- Data table ---------- */
.data-table, .compare-table { width: 100%; border-collapse: collapse; margin: 1.5rem 0 2rem; font-size: 0.92rem; }
.data-table th, .data-table td, .compare-table th, .compare-table td { text-align: left; padding: 0.85rem 1rem; border-bottom: 1px solid var(--hairline); }
.data-table th, .compare-table th { color: var(--gold-soft); font-size: 0.72rem; text-transform: uppercase; letter-spacing: 0.1em; font-weight: 700; }
.data-table td, .compare-table td { color: var(--ink-soft); }
.data-table tr:hover td, .compare-table tr:hover td { color: var(--ink); }

/* ---------- FAQ ---------- */
.faq-item { border-bottom: 1px solid var(--hairline); padding: 1.3rem 0; }
.faq-item h3 { font-family: var(--font-body); font-size: 1.02rem; color: var(--ink); font-weight: 600; margin-bottom: 0.5rem; }
.faq-item p { margin: 0; font-size: 0.95rem; }

/* ---------- Breadcrumb ---------- */
.crumb { display: flex; gap: 0.5rem; align-items: center; font-size: 0.82rem; color: var(--ink-mute); margin-bottom: 1.4rem; flex-wrap: wrap; }
.crumb a { color: var(--ink-mute); }
.crumb a:hover { color: var(--gold-soft); }
.crumb .sep { opacity: 0.4; }

/* ---------- Callout / disclaimer ---------- */
.callout { border-left: 3px solid var(--gold); background: rgba(232,165,61,0.06); border-radius: 0 var(--radius-md) var(--radius-md) 0; padding: 1.1rem 1.4rem; margin: 1.6rem 0; }
.callout p { margin: 0; font-size: 0.9rem; color: var(--ink-soft); }
.disclaimer-box { border: 1px solid var(--hairline-strong); border-radius: var(--radius-md); padding: 1.3rem 1.5rem; background: var(--bg-elevated); margin-top: 2.5rem; }
.disclaimer-box p { font-size: 0.82rem; color: var(--ink-mute); margin: 0; }

/* ---------- Article ---------- */
.article-body h2 { margin-top: 2.2rem; color: var(--ink); }
.article-body h3 { margin-top: 1.6rem; color: var(--ink); }
.article-body ul, .article-body ol { color: var(--ink-soft); padding-left: 1.3rem; }
.article-body li { margin-bottom: 0.5rem; }
.article-body a { border-bottom: 1px solid rgba(232,165,61,0.3); }
.meta-row { display: flex; gap: 0.9rem; align-items: center; color: var(--ink-mute); font-size: 0.82rem; margin-bottom: 1.6rem; flex-wrap: wrap; }
.meta-row .divider { opacity: 0.4; }

/* ---------- Ad slot ---------- */
.ad-slot { margin: 2.5rem 0; text-align: center; }
.ad-label { font-size: 0.65rem; text-transform: uppercase; letter-spacing: 0.15em; color: var(--ink-mute); margin-bottom: 0.5rem; }

/* ---------- Footer ---------- */
footer { border-top: 1px solid var(--hairline); padding: 4rem 0 2.5rem; margin-top: 3rem; }
.footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1fr; gap: 2.5rem; }
@media (max-width: 760px) { .footer-grid { grid-template-columns: 1fr 1fr; } }
.footer-grid h4 { font-family: var(--font-body); font-size: 0.75rem; text-transform: uppercase; letter-spacing: 0.14em; color: var(--ink-mute); margin-bottom: 1rem; }
.footer-links { display: flex; flex-direction: column; gap: 0.65rem; }
.footer-links a { color: var(--ink-soft); font-size: 0.88rem; }
.footer-links a:hover { color: var(--gold-soft); }
.footer-bottom { display: flex; justify-content: space-between; align-items: center; margin-top: 3rem; padding-top: 1.8rem; border-top: 1px solid var(--hairline); flex-wrap: wrap; gap: 1rem; }
.footer-bottom p { margin: 0; font-size: 0.78rem; color: var(--ink-mute); }

/* ---------- Reveal-on-scroll base state (GSAP targets) ---------- */
.reveal { opacity: 0; transform: translateY(28px); }

/* ---------- Form ---------- */
.form-field { margin-bottom: 1rem; }
.form-field label { display: block; font-size: 0.8rem; color: var(--ink-mute); margin-bottom: 0.4rem; text-transform: uppercase; letter-spacing: 0.08em; }
.form-field input, .form-field textarea, .form-field select {
  width: 100%; background: var(--bg-elevated); border: 1px solid var(--hairline-strong); border-radius: var(--radius-sm);
  padding: 0.8rem 1rem; color: var(--ink); font-family: var(--font-body); font-size: 0.95rem;
}
.form-field input:focus, .form-field textarea:focus, .form-field select:focus { outline: none; border-color: var(--gold); }
#form-status { font-size: 0.85rem; margin-top: 0.8rem; }

/* ---------- Calculator ---------- */
.calc-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 2.5rem; align-items: start; }
@media (max-width: 800px) { .calc-grid { grid-template-columns: 1fr; } }
.calc-result-row { display: flex; justify-content: space-between; padding: 0.9rem 0; border-bottom: 1px solid var(--hairline); }
.calc-result-row .lbl { color: var(--ink-mute); font-size: 0.85rem; }
.calc-result-row .val { color: var(--gold-soft); font-family: var(--font-display); font-size: 1.3rem; }

::selection { background: var(--gold); color: #201404; }

/* ---------- Consent banner ---------- */
.consent-bar {
  position: fixed; left: 1rem; right: 1rem; bottom: 1rem; z-index: 70;
  max-width: 640px; margin: 0 auto;
  background: rgba(19,21,16,0.92); backdrop-filter: blur(16px); -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--hairline-strong); border-radius: var(--radius-md);
  padding: 1.1rem 1.3rem; display: flex; gap: 1rem; align-items: center; flex-wrap: wrap;
  transform: translateY(120%); opacity: 0; transition: transform 0.6s var(--ease), opacity 0.6s var(--ease);
}
.consent-bar.visible { transform: translateY(0); opacity: 1; }
.consent-bar p { margin: 0; font-size: 0.82rem; color: var(--ink-soft); flex: 1 1 260px; }
.consent-bar .actions { display: flex; gap: 0.6rem; flex-shrink: 0; }
.consent-btn { border-radius: 999px; padding: 0.55rem 1.1rem; font-size: 0.82rem; font-weight: 600; cursor: pointer; border: 1px solid var(--hairline-strong); background: transparent; color: var(--ink-soft); }
.consent-btn.primary { background: var(--gold); color: #201404; border-color: transparent; }