/* ============================================================
   RealEstateDataCenter.com — institutional research aesthetic
   Palette: ink navy / paper / electric blue (restrained)
   Type: Newsreader (display) · IBM Plex Sans (body) · IBM Plex Mono (labels)
   ============================================================ */

:root {
  --ink: #0d1522;
  --ink-2: #121e31;
  --paper: #f7f9fb;
  --white: #ffffff;
  --blue: #1b5fe0;
  --blue-soft: #9dbbf2;
  --text: #2b3648;
  --muted: #5b6b82;
  --line: #e2e8f1;
  --line-dark: rgba(255, 255, 255, 0.14);
  --font-display: "Newsreader", Georgia, serif;
  --font-body: "IBM Plex Sans", -apple-system, "Segoe UI", sans-serif;
  --font-mono: "IBM Plex Mono", "SF Mono", Consolas, monospace;
  --max: 1100px;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-body);
  font-size: 1.0625rem;
  line-height: 1.65;
  color: var(--text);
  background: var(--white);
  -webkit-font-smoothing: antialiased;
}

.container { max-width: var(--max); margin: 0 auto; padding: 0 1.25rem; }

h1, h2, h3 { font-family: var(--font-display); font-weight: 600; color: var(--ink); line-height: 1.15; }

h2 { font-size: clamp(1.75rem, 3.5vw, 2.5rem); margin-bottom: 2rem; max-width: 22ch; }

a { color: var(--blue); }
a:focus-visible, button:focus-visible, input:focus-visible {
  outline: 2px solid var(--blue);
  outline-offset: 3px;
}

[id] { scroll-margin-top: 5rem; }

.visually-hidden {
  position: absolute; width: 1px; height: 1px;
  overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap;
}

.skip-link {
  position: absolute; left: -9999px; top: 0;
  background: var(--blue); color: #fff; padding: 0.6rem 1rem; z-index: 100;
}
.skip-link:focus { left: 0; }

/* ---------- Eyebrow labels (mono = data-intelligence cue) ---------- */
.eyebrow {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--blue);
  margin-bottom: 0.9rem;
}
.eyebrow::before { content: "// "; color: var(--blue-soft); }
.eyebrow-light { color: var(--blue-soft); }

/* ---------- Buttons ---------- */
.btn {
  display: inline-block;
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 0.95rem;
  padding: 0.8rem 1.5rem;
  border-radius: 4px;
  text-decoration: none;
  border: 1px solid transparent;
  cursor: pointer;
  transition: background 0.15s ease, border-color 0.15s ease;
}
.btn-primary { background: var(--blue); color: #fff; }
.btn-primary:hover { background: #1450c2; }
.btn-ghost { color: #fff; border-color: var(--line-dark); }
.btn-ghost:hover { border-color: var(--blue-soft); }
.btn-outline { color: var(--blue); border-color: var(--blue); }
.btn-outline:hover { background: var(--blue); color: #fff; }

/* ============================================================
   Header
   ============================================================ */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(255, 255, 255, 0.96);
  backdrop-filter: blur(6px);
  border-bottom: 1px solid var(--line);
}
.header-inner {
  display: flex; align-items: center; justify-content: space-between;
  height: 4rem;
}
.brand { display: flex; align-items: center; gap: 0.6rem; text-decoration: none; }
.brand-mark {
  width: 10px; height: 10px; background: var(--blue);
  box-shadow: 0 0 0 3px rgba(27, 95, 224, 0.18);
}
.brand-name {
  font-family: var(--font-mono); font-weight: 500;
  font-size: 0.95rem; color: var(--ink); letter-spacing: -0.01em;
}
.brand-tld { color: var(--muted); }

.site-nav { display: flex; gap: 1.6rem; align-items: center; }
.site-nav a {
  font-size: 0.9rem; font-weight: 500;
  color: var(--text); text-decoration: none;
}
.site-nav a:hover { color: var(--blue); }
.nav-cta {
  color: var(--blue) !important;
  border: 1px solid var(--blue);
  padding: 0.35rem 0.9rem; border-radius: 4px;
}

.nav-toggle { display: none; }
.nav-toggle-label { display: none; cursor: pointer; }

/* ============================================================
   Hero
   ============================================================ */
.hero {
  position: relative;
  background: linear-gradient(180deg, var(--ink) 0%, var(--ink-2) 100%);
  color: #fff;
  overflow: hidden;
}
.hero-grid { position: absolute; inset: 0; opacity: 0.5; }
.hero-grid svg { width: 100%; height: 100%; }
.grid-lines path { fill: none; stroke: rgba(157, 187, 242, 0.22); stroke-width: 1; }
.grid-nodes circle { fill: var(--blue); opacity: 0.7; }

.hero-inner {
  position: relative;
  padding: 6.5rem 1.25rem 5.5rem;
  max-width: var(--max);
}
.hero h1 {
  color: #fff;
  font-size: clamp(2.4rem, 5.5vw, 4rem);
  max-width: 16ch;
  margin-bottom: 1.25rem;
}
.hero-sub {
  font-size: 1.15rem;
  color: #c4cfdf;
  max-width: 56ch;
  margin-bottom: 2.25rem;
}
.hero-actions { display: flex; gap: 0.9rem; flex-wrap: wrap; }

/* Coverage strip — signature element */
.coverage-strip {
  position: relative;
  border-top: 1px solid var(--line-dark);
  background: rgba(0, 0, 0, 0.25);
}
.coverage-inner {
  display: flex; flex-wrap: wrap; gap: 0.4rem 1.75rem;
  padding-top: 0.85rem; padding-bottom: 0.85rem;
  font-family: var(--font-mono); font-size: 0.78rem;
  color: #93a3ba; letter-spacing: 0.04em;
}
.coverage-label { color: var(--blue-soft); text-transform: uppercase; letter-spacing: 0.14em; }
.coverage-inner span:not(.coverage-label)::before { content: "▪ "; color: var(--blue); font-size: 0.6rem; }

/* ============================================================
   Positioning strip
   ============================================================ */
.positioning {
  border-bottom: 1px solid var(--line);
  background: var(--paper);
}
.positioning p {
  font-family: var(--font-display);
  font-size: clamp(1.15rem, 2.2vw, 1.45rem);
  color: var(--ink);
  max-width: 62ch;
  padding: 2.75rem 0;
}

/* ============================================================
   Sections
   ============================================================ */
.section { padding: 5rem 0; }
.section-alt { background: var(--paper); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }

/* ---------- Topic cards ---------- */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 1.1rem;
}
.topic-card {
  border: 1px solid var(--line);
  border-top: 2px solid var(--blue);
  background: var(--white);
  padding: 1.5rem 1.4rem;
  transition: border-color 0.15s ease, transform 0.15s ease;
}
.topic-card:hover { border-color: var(--blue-soft); transform: translateY(-2px); }
.topic-card h3 { font-size: 1.2rem; margin-bottom: 0.6rem; }
.topic-card p { font-size: 0.95rem; color: var(--muted); }

/* ---------- Markets ---------- */
.market-list {
  list-style: none;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(230px, 1fr));
  gap: 0.75rem;
}
.market-list li {
  display: flex; align-items: center; justify-content: space-between;
  background: var(--white);
  border: 1px solid var(--line);
  padding: 1rem 1.2rem;
}
.market-name { font-weight: 600; color: var(--ink); }
.market-tag {
  font-family: var(--font-mono); font-size: 0.7rem;
  text-transform: uppercase; letter-spacing: 0.1em;
  color: var(--blue); background: rgba(27, 95, 224, 0.07);
  border: 1px solid rgba(27, 95, 224, 0.2);
  padding: 0.15rem 0.5rem;
}

/* ---------- Why it matters ---------- */
.why-inner {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 3rem;
  align-items: start;
}
.why-copy p + p { margin-top: 1.1rem; }
.why-copy { color: var(--text); }

/* ---------- Articles ---------- */
.article-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1.1rem;
}
.article-card {
  background: var(--white);
  border: 1px solid var(--line);
  padding: 1.6rem 1.5rem;
  display: flex; flex-direction: column; gap: 0.6rem;
}
.article-kicker {
  font-family: var(--font-mono); font-size: 0.72rem;
  text-transform: uppercase; letter-spacing: 0.12em;
  color: var(--blue);
}
.article-card h3 { font-size: 1.25rem; }
.article-card h3 a { color: var(--ink); text-decoration: none; }
.article-card h3 a:hover { color: var(--blue); }
.article-card > p:last-child { font-size: 0.95rem; color: var(--muted); }

/* ---------- Newsletter ---------- */
.newsletter { background: var(--ink); color: #fff; }
.newsletter h2 { color: #fff; margin-bottom: 0.75rem; }
.newsletter-inner {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 3rem;
  align-items: center;
}
.newsletter-desc { color: #c4cfdf; max-width: 48ch; }
.newsletter-form { display: flex; flex-wrap: wrap; gap: 0.7rem; }
.newsletter-form input {
  flex: 1 1 220px;
  font-family: var(--font-body); font-size: 1rem;
  padding: 0.8rem 1rem;
  border: 1px solid var(--line-dark);
  background: rgba(255, 255, 255, 0.06);
  color: #fff; border-radius: 4px;
}
.newsletter-form input::placeholder { color: #7e8da3; }
.form-note { flex-basis: 100%; font-size: 0.8rem; color: #93a3ba; }

/* ---------- Contact ---------- */
.contact-inner { text-align: left; }
.contact-copy { max-width: 56ch; margin-bottom: 1.75rem; }

/* ============================================================
   Footer
   ============================================================ */
.site-footer {
  background: var(--ink);
  color: #c4cfdf;
  border-top: 2px solid var(--blue);
  padding: 3.5rem 0 2rem;
}
.footer-inner {
  display: flex; justify-content: space-between; gap: 2rem; flex-wrap: wrap;
  padding-bottom: 2rem;
  border-bottom: 1px solid var(--line-dark);
}
.footer-name { font-family: var(--font-mono); font-size: 0.95rem; color: #fff; }
.footer-tag { font-size: 0.9rem; color: #93a3ba; max-width: 40ch; margin-top: 0.4rem; }
.footer-nav { display: flex; gap: 1.5rem; flex-wrap: wrap; }
.footer-nav a { color: #c4cfdf; text-decoration: none; font-size: 0.9rem; }
.footer-nav a:hover { color: #fff; }
.footer-note {
  display: flex; justify-content: space-between; gap: 1rem; flex-wrap: wrap;
  padding-top: 1.5rem;
  font-size: 0.82rem; color: #7e8da3;
}

/* ============================================================
   Responsive
   ============================================================ */
@media (max-width: 760px) {
  .nav-toggle-label {
    display: flex; flex-direction: column; gap: 5px; padding: 0.5rem;
  }
  .nav-toggle-label span {
    width: 22px; height: 2px; background: var(--ink);
  }
  .site-nav {
    display: none;
    position: absolute; top: 4rem; left: 0; right: 0;
    flex-direction: column; align-items: flex-start;
    gap: 0;
    background: var(--white);
    border-bottom: 1px solid var(--line);
    padding: 0.5rem 1.25rem 1rem;
  }
  .site-nav a { padding: 0.7rem 0; width: 100%; }
  .nav-cta { border: none; padding: 0.7rem 0 !important; }
  .nav-toggle:checked ~ .site-nav { display: flex; }

  .hero-inner { padding-top: 4.5rem; padding-bottom: 3.75rem; }
  .why-inner, .newsletter-inner { grid-template-columns: 1fr; gap: 1.75rem; }
  .section { padding: 3.5rem 0; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition: none !important; }
}