/* ==========================================================================
   Homestimate — design system
   Framework-free, mobile-first, optimized for Core Web Vitals.
   To rebrand: change --primary / --accent below and the logo SVG + favicon.
   ========================================================================== */

:root {
  /* Brand palette */
  --primary: #0f766e;        /* teal-700 — trust + home/garden */
  --primary-dark: #0b5a54;
  --primary-soft: #e6f3f1;
  --accent: #f59e0b;         /* amber — warm CTA accent */
  --accent-dark: #d97f06;

  /* Neutrals */
  --ink: #0f172a;
  --body: #334155;
  --muted: #64748b;
  --border: #e2e8f0;
  --bg: #ffffff;
  --bg-soft: #f8fafc;
  --bg-softer: #f1f5f9;

  /* System */
  --radius: 12px;
  --radius-sm: 8px;
  --shadow-sm: 0 1px 2px rgba(15, 23, 42, .06), 0 1px 3px rgba(15, 23, 42, .08);
  --shadow: 0 4px 6px -1px rgba(15, 23, 42, .07), 0 10px 20px -5px rgba(15, 23, 42, .08);
  --shadow-lg: 0 20px 40px -12px rgba(15, 23, 42, .18);
  --container: 1120px;
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

/* Reset --------------------------------------------------------------- */
*, *::before, *::after { box-sizing: border-box; }
* { margin: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  font-family: var(--font);
  color: var(--body);
  background: var(--bg);
  line-height: 1.65;
  font-size: 17px;
  -webkit-font-smoothing: antialiased;
}
img, svg { display: block; max-width: 100%; }
a { color: var(--primary); text-decoration: none; }
a:hover { color: var(--primary-dark); }
h1, h2, h3, h4 { color: var(--ink); line-height: 1.2; font-weight: 700; letter-spacing: -.01em; }
input, button, select { font: inherit; }

/* Layout -------------------------------------------------------------- */
.container { width: 100%; max-width: var(--container); margin: 0 auto; padding: 0 20px; }
.section { padding: 64px 0; }
.section-soft { background: var(--bg-soft); }
.section-head { max-width: 680px; margin: 0 auto 40px; text-align: center; }
.eyebrow { color: var(--primary); font-weight: 700; font-size: .8rem; letter-spacing: .08em; text-transform: uppercase; }
.section-title { font-size: clamp(1.6rem, 4vw, 2.2rem); margin: 8px 0 12px; }
.section-lead { color: var(--muted); font-size: 1.05rem; }
.text-center { text-align: center; }
.muted { color: var(--muted); }

/* Header -------------------------------------------------------------- */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(255, 255, 255, .9);
  backdrop-filter: saturate(180%) blur(8px);
  border-bottom: 1px solid var(--border);
}
.header-inner { display: flex; align-items: center; justify-content: space-between; height: 64px; gap: 16px; }
.logo { display: inline-flex; align-items: center; gap: 9px; color: var(--ink); font-weight: 800; font-size: 1.2rem; letter-spacing: -.02em; }
.logo:hover { color: var(--ink); }
.logo-mark { color: var(--primary); flex: none; }
.logo-accent { color: var(--primary); }
.site-nav { display: flex; align-items: center; gap: 4px; flex-wrap: wrap; }
.site-nav a { color: var(--body); font-weight: 600; font-size: .95rem; padding: 8px 12px; border-radius: var(--radius-sm); }
.site-nav a:hover { color: var(--primary); background: var(--primary-soft); }
.nav-cta { background: var(--primary); color: #fff !important; }
.nav-cta:hover { background: var(--primary-dark); }

/* Buttons ------------------------------------------------------------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  font-weight: 700; font-size: 1rem; padding: 13px 24px; border-radius: var(--radius-sm);
  border: 1px solid transparent; cursor: pointer; transition: transform .04s ease, background .15s ease, box-shadow .15s ease;
  text-align: center;
}
.btn:active { transform: translateY(1px); }
.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-dark); color: #fff; box-shadow: var(--shadow); }
.btn-accent { background: var(--accent); color: #3a2a00; }
.btn-accent:hover { background: var(--accent-dark); color: #3a2a00; }
.btn-outline { background: #fff; color: var(--ink); border-color: var(--border); }
.btn-outline:hover { border-color: var(--primary); color: var(--primary); }
.btn-block { width: 100%; }

/* Hero ---------------------------------------------------------------- */
.hero {
  background: radial-gradient(1200px 400px at 80% -10%, var(--primary-soft), transparent 60%), var(--bg);
  padding: 72px 0 56px;
  border-bottom: 1px solid var(--border);
}
.hero-title { font-size: clamp(2rem, 5.5vw, 3.1rem); max-width: 14ch; }
.hero-title span { color: var(--primary); }
.hero-sub { font-size: 1.15rem; color: var(--muted); margin: 18px 0 28px; max-width: 52ch; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-bottom: 28px; }
.trust-row { display: flex; flex-wrap: wrap; gap: 18px 26px; }
.trust-item { display: inline-flex; align-items: center; gap: 8px; color: var(--body); font-weight: 600; font-size: .92rem; }
.trust-item svg { color: var(--primary); flex: none; }

/* Cards / calculator grid -------------------------------------------- */
.card-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 20px; }
.card {
  position: relative; display: flex; flex-direction: column; gap: 8px;
  background: #fff; border: 1px solid var(--border); border-radius: var(--radius);
  padding: 24px; box-shadow: var(--shadow-sm); transition: transform .15s ease, box-shadow .15s ease, border-color .15s ease;
}
a.card:hover { transform: translateY(-3px); box-shadow: var(--shadow); border-color: var(--primary); color: var(--body); }
.card-icon {
  width: 46px; height: 46px; border-radius: 11px; display: grid; place-items: center;
  background: var(--primary-soft); color: var(--primary); margin-bottom: 6px;
}
.card-title { font-size: 1.15rem; color: var(--ink); }
.card-desc { color: var(--muted); font-size: .95rem; }
.card-cta { margin-top: auto; padding-top: 10px; color: var(--primary); font-weight: 700; font-size: .92rem; }
.card[aria-disabled="true"] { opacity: .72; }
.badge {
  position: absolute; top: 16px; right: 16px; font-size: .68rem; font-weight: 800; letter-spacing: .04em;
  text-transform: uppercase; color: var(--muted); background: var(--bg-softer); border: 1px solid var(--border);
  padding: 3px 9px; border-radius: 999px;
}

/* Breadcrumb ---------------------------------------------------------- */
.breadcrumb { font-size: .88rem; color: var(--muted); padding: 18px 0 0; }
.breadcrumb a { color: var(--muted); }
.breadcrumb a:hover { color: var(--primary); }

/* Calculator ---------------------------------------------------------- */
.calc-head { padding: 28px 0 8px; }
.calc-head h1 { font-size: clamp(1.7rem, 4.5vw, 2.4rem); }
.calc-head p { color: var(--muted); margin-top: 10px; max-width: 60ch; }
.calc-wrap { display: grid; grid-template-columns: 1.1fr .9fr; gap: 28px; align-items: start; padding: 24px 0 8px; }
.calc-form, .calc-results {
  background: #fff; border: 1px solid var(--border); border-radius: var(--radius);
  padding: 24px; box-shadow: var(--shadow-sm);
}
.calc-results { position: sticky; top: 84px; background: var(--bg-soft); }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.form-group { margin-bottom: 16px; }
.form-group label { display: block; font-weight: 600; color: var(--ink); font-size: .9rem; margin-bottom: 6px; }
.form-group .hint { font-weight: 400; color: var(--muted); font-size: .82rem; }
input[type="number"], select {
  width: 100%; padding: 11px 12px; border: 1px solid var(--border); border-radius: var(--radius-sm);
  background: #fff; color: var(--ink); transition: border-color .15s ease, box-shadow .15s ease;
}
input[type="number"]:focus, select:focus {
  outline: none; border-color: var(--primary); box-shadow: 0 0 0 3px var(--primary-soft);
}
.checkbox-row { display: flex; align-items: center; gap: 10px; margin: 4px 0 16px; }
.checkbox-row input { width: 18px; height: 18px; accent-color: var(--primary); }
.checkbox-row label { margin: 0; font-weight: 600; color: var(--ink); font-size: .92rem; }

.result-box { text-align: center; padding: 8px 0 16px; border-bottom: 1px dashed var(--border); margin-bottom: 16px; }
.result-label { color: var(--muted); font-size: .9rem; font-weight: 600; text-transform: uppercase; letter-spacing: .04em; }
.result-value { font-size: clamp(2.4rem, 7vw, 3.2rem); font-weight: 800; color: var(--primary); line-height: 1.05; margin: 4px 0; }
.result-unit { font-size: 1rem; color: var(--muted); font-weight: 600; }
.result-list { list-style: none; padding: 0; }
.result-list li { display: flex; justify-content: space-between; gap: 12px; padding: 9px 0; border-bottom: 1px solid var(--border); font-size: .96rem; }
.result-list li:last-child { border-bottom: 0; }
.result-list .val { font-weight: 700; color: var(--ink); }
.result-cost { background: var(--primary-soft); border-radius: var(--radius-sm); padding: 14px 16px; margin-top: 14px; display: flex; justify-content: space-between; align-items: center; }
.result-cost .label { font-weight: 600; color: var(--primary-dark); }
.result-cost .amount { font-size: 1.4rem; font-weight: 800; color: var(--primary-dark); }
.calc-note { font-size: .82rem; color: var(--muted); margin-top: 14px; }

/* Supplies / affiliate ------------------------------------------------ */
.supplies { margin-top: 18px; }
.supplies h3 { font-size: 1rem; margin-bottom: 10px; }
.supply-list { list-style: none; padding: 0; display: grid; gap: 8px; }
.supply-item a {
  display: flex; align-items: center; justify-content: space-between; gap: 10px;
  padding: 11px 14px; border: 1px solid var(--border); border-radius: var(--radius-sm); background: #fff;
  color: var(--ink); font-weight: 600; font-size: .92rem;
}
.supply-item a:hover { border-color: var(--accent); color: var(--ink); background: #fffdf6; }
.supply-item .arrow { color: var(--accent-dark); }

/* Prose / content ----------------------------------------------------- */
.prose { max-width: 760px; }
.prose h2 { font-size: 1.5rem; margin: 36px 0 12px; }
.prose h3 { font-size: 1.2rem; margin: 26px 0 8px; }
.prose p { margin: 12px 0; }
.prose ul, .prose ol { margin: 12px 0; padding-left: 22px; }
.prose li { margin: 6px 0; }
.prose table { width: 100%; border-collapse: collapse; margin: 18px 0; font-size: .95rem; }
.prose th, .prose td { text-align: left; padding: 10px 12px; border: 1px solid var(--border); }
.prose th { background: var(--bg-soft); color: var(--ink); }
.prose a { font-weight: 600; text-decoration: underline; text-underline-offset: 2px; }

/* Article meta, lead, and callout CTA --------------------------------- */
.article-meta { color: var(--muted); font-size: .9rem; margin: 4px 0 20px; }
.lead { font-size: 1.14rem; color: var(--body); }
.callout { background: var(--primary-soft); border: 1px solid #cce6e2; border-left: 4px solid var(--primary); border-radius: var(--radius-sm); padding: 20px 22px; margin: 30px 0; }
.callout h3 { margin: 0 0 6px; font-size: 1.12rem; color: var(--ink); }
.callout p { margin: 0 0 14px; color: var(--body); }

/* Related links (contextual internal linking on calculator pages) ----- */
.related-section { border-top: 1px solid var(--border); padding: 32px 0; }
.related-title { font-size: 1.2rem; margin-bottom: 14px; }
.related-links { list-style: none; padding: 0; display: flex; flex-wrap: wrap; gap: 10px; }
.related-links a {
  display: inline-block; background: #fff; border: 1px solid var(--border); border-radius: 999px;
  padding: 8px 16px; font-weight: 600; font-size: .92rem; color: var(--ink); transition: border-color .15s ease, color .15s ease;
}
.related-links a:hover { border-color: var(--primary); color: var(--primary); }

/* FAQ ----------------------------------------------------------------- */
.faq { max-width: 760px; }
.faq-item { border: 1px solid var(--border); border-radius: var(--radius-sm); margin-bottom: 12px; background: #fff; }
.faq-item summary {
  cursor: pointer; font-weight: 700; color: var(--ink); padding: 16px 18px; list-style: none;
  display: flex; justify-content: space-between; align-items: center; gap: 12px;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after { content: "+"; color: var(--primary); font-size: 1.3rem; font-weight: 700; flex: none; }
.faq-item[open] summary::after { content: "\2013"; }
.faq-item .faq-body { padding: 0 18px 16px; color: var(--body); }

/* Newsletter ---------------------------------------------------------- */
.newsletter { background: var(--ink); color: #fff; border-radius: var(--radius); padding: 40px; text-align: center; }
.newsletter h2 { color: #fff; font-size: 1.6rem; }
.newsletter p { color: #cbd5e1; margin: 10px auto 22px; max-width: 48ch; }
.newsletter-form { display: flex; gap: 10px; max-width: 460px; margin: 0 auto; flex-wrap: wrap; }
.newsletter-form input { flex: 1 1 220px; padding: 13px 14px; border-radius: var(--radius-sm); border: 1px solid #334155; background: #1e293b; color: #fff; }
.newsletter-form input::placeholder { color: #94a3b8; }
.newsletter-msg { color: var(--accent); font-weight: 600; margin-top: 14px; min-height: 1.2em; }

/* Footer -------------------------------------------------------------- */
.site-footer { background: var(--bg-soft); border-top: 1px solid var(--border); padding: 52px 0 28px; margin-top: 64px; font-size: .94rem; }
.footer-grid { display: grid; grid-template-columns: 1.6fr 1fr 1fr 1fr; gap: 28px; }
.footer-brand .logo { margin-bottom: 12px; }
.footer-brand p { color: var(--muted); max-width: 36ch; }
.footer-col h4 { font-size: .82rem; text-transform: uppercase; letter-spacing: .06em; color: var(--muted); margin-bottom: 12px; }
.footer-col a { display: block; color: var(--body); padding: 5px 0; }
.footer-col a:hover { color: var(--primary); }
.footer-disclosure { color: var(--muted); font-size: .82rem; border-top: 1px solid var(--border); margin-top: 32px; padding-top: 20px; }
.footer-copy { color: var(--muted); font-size: .82rem; margin-top: 8px; }

/* Responsive ---------------------------------------------------------- */
@media (max-width: 860px) {
  .calc-wrap { grid-template-columns: 1fr; }
  .calc-results { position: static; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 24px; }
}
@media (max-width: 560px) {
  body { font-size: 16px; }
  .section { padding: 48px 0; }
  .header-inner { height: 58px; }
  .site-nav { gap: 0; }
  .site-nav a { padding: 8px 9px; font-size: .9rem; }
  .form-row { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .newsletter { padding: 28px 20px; }
}