/* ============================================================
   M@B — matb.ai Hub Site
   Standalone stylesheet (no Squarespace dependency)
   Last updated: 2026-05-05
   ============================================================ */

/* --- Reset / Base --- */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
               "Helvetica Neue", Arial, sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  padding-top: 72px; /* matches fixed nav height */
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
h1, h2, h3, h4 { line-height: 1.15; letter-spacing: -0.02em; }

/* --- Variables / Tokens --- */
:root {
  --bg: #ffffff;
  --bg-soft: #f7f7f5;
  --text: #1a1a1a;
  --text-muted: #5b5b5b;
  --line: #e6e6e3;
  --accent: #1a1a1a;
  --accent-soft: #f0f0ed;
  --max: 1200px;
  --radius: 16px;
  --radius-lg: 24px;
  --shadow: 0 12px 30px rgba(0, 0, 0, 0.06);
  --shadow-card: 0 4px 16px rgba(0, 0, 0, 0.04);
}

/* --- Layout --- */
.container {
  width: min(100% - 40px, var(--max));
  margin: 0 auto;
}

/* --- Typography --- */
.eyebrow {
  display: inline-block;
  margin-bottom: 14px;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--text-muted);
}
.lede {
  font-size: 1.15rem;
  color: var(--text-muted);
  max-width: 680px;
  margin: 0;
}

/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 24px;
  border-radius: 999px;
  font-weight: 600;
  font-size: 0.96rem;
  border: 1.5px solid var(--text);
  cursor: pointer;
  transition: transform 0.15s ease, box-shadow 0.15s ease, background 0.15s ease;
  white-space: nowrap;
}
.btn-primary { background: var(--text); color: #fff; }
.btn-primary:hover { transform: translateY(-1px); box-shadow: var(--shadow); }
.btn-secondary { background: transparent; color: var(--text); }
.btn-secondary:hover { background: var(--accent-soft); }
.btn-on-dark { background: transparent; color: #fff; border-color: #fff; }
.btn-on-dark:hover { background: rgba(255,255,255,0.1); }

/* --- Site Nav --- */
.site-nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  height: 72px;
  background: rgba(255, 255, 255, 0.96);
  border-bottom: 1px solid var(--line);
}
.site-nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}
.site-nav-logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 800;
  font-size: 1.05rem;
  letter-spacing: -0.01em;
  color: var(--text);
}
.site-nav-logo img { height: 38px; width: auto; }
.site-nav-links {
  list-style: none;
  margin: 0; padding: 0;
  display: flex;
  gap: 30px;
  align-items: center;
}
.site-nav-links a {
  font-weight: 500;
  font-size: 0.95rem;
  color: var(--text);
  padding: 8px 0;
  border-bottom: 2px solid transparent;
  transition: border-color 0.15s ease;
}
.site-nav-links a:hover,
.site-nav-links a.active {
  border-bottom-color: var(--text);
}
.site-nav-links a.site-nav-cta {
  background: var(--text);
  color: #fff;
  padding: 10px 20px;
  border-radius: 999px;
  border-bottom: none;
  font-weight: 600;
}
.site-nav-links a.site-nav-cta:hover {
  transform: translateY(-1px);
  box-shadow: var(--shadow);
  border-bottom: none;
}
.site-nav-toggle {
  display: none;
  background: none;
  border: 0;
  padding: 8px;
  cursor: pointer;
}
.site-nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--text);
  margin: 5px 0;
  transition: transform 0.2s ease, opacity 0.2s ease;
}
.site-nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.site-nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.site-nav-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* --- Sections --- */
section { padding: 88px 0; }
.section-soft { background: var(--bg-soft); }
.section-title {
  font-size: clamp(1.8rem, 3vw, 2.6rem);
  margin: 0 0 14px;
}
.section-copy {
  color: var(--text-muted);
  max-width: 720px;
  margin: 0;
  font-size: 1.03rem;
}

/* --- Hero --- */
.hero {
  padding: 100px 0 80px;
  background:
    radial-gradient(1200px 500px at 80% 0%, rgba(0,0,0,0.04), transparent 60%),
    radial-gradient(800px 400px at 0% 100%, rgba(0,0,0,0.03), transparent 60%),
    var(--bg);
  border-bottom: 1px solid var(--line);
}
.hero h1 {
  margin: 0 0 18px;
  font-size: clamp(2.4rem, 5vw, 4rem);
  letter-spacing: -0.03em;
  max-width: 14ch;
}
.hero-lede {
  font-size: 1.2rem;
  color: var(--text-muted);
  max-width: 640px;
  margin: 0 0 28px;
}
.hero-actions {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
}

/* --- Page header (About/Technology/Consulting/Contact) --- */
.page-header {
  padding: 80px 0 60px;
  background: var(--bg-soft);
  border-bottom: 1px solid var(--line);
}
.page-header h1 {
  margin: 0 0 14px;
  font-size: clamp(2rem, 4vw, 3.2rem);
}
.page-header .lede { max-width: 720px; }

/* --- Channel cards (home page, two large side-by-side) --- */
.channel-cards {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  margin-top: 40px;
}
.channel-card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 36px;
  display: flex;
  flex-direction: column;
  min-height: 280px;
  transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
}
.channel-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow);
  border-color: var(--text);
}
.channel-card .eyebrow { color: var(--text); }
.channel-card h3 {
  margin: 0 0 12px;
  font-size: 1.5rem;
  letter-spacing: -0.02em;
}
.channel-card p {
  margin: 0 0 28px;
  color: var(--text-muted);
  flex: 1;
}
.channel-card .channel-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-weight: 600;
  color: var(--text);
  border-bottom: 2px solid var(--text);
  padding-bottom: 2px;
  align-self: flex-start;
  transition: gap 0.15s ease;
}
.channel-card:hover .channel-link { gap: 12px; }

/* --- Generic cards (3-up and 4-up grids) --- */
.cards-3, .cards-4 {
  display: grid;
  gap: 22px;
  margin-top: 36px;
}
.cards-3 { grid-template-columns: repeat(3, 1fr); }
.cards-4 { grid-template-columns: repeat(2, 1fr); }
.card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 28px;
  box-shadow: var(--shadow-card);
}
.card h3 {
  margin: 0 0 10px;
  font-size: 1.15rem;
  letter-spacing: -0.01em;
}
.card p { margin: 0; color: var(--text-muted); }

/* --- Split layout (text + visual) --- */
.split {
  display: grid;
  grid-template-columns: 1fr 1.05fr;
  gap: 56px;
  align-items: center;
}
.split-stack {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

/* --- Outcomes / list cards --- */
.outcomes {
  list-style: none;
  padding: 0;
  margin: 28px 0 0;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 14px 22px;
}
.outcomes li {
  padding: 18px 22px;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: #fff;
  font-weight: 500;
}

/* --- CTA box (dark, full width) --- */
.cta-box {
  padding: 48px;
  background: #111;
  color: #fff;
  border-radius: var(--radius-lg);
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 28px;
  flex-wrap: wrap;
}
.cta-box h2 { margin: 0; color: #fff; font-size: 1.8rem; }
.cta-box p {
  margin: 10px 0 0;
  color: rgba(255, 255, 255, 0.78);
  max-width: 720px;
}
.cta-box-text { flex: 1; min-width: 260px; }

/* --- Contact --- */
.contact-list {
  list-style: none;
  padding: 0;
  margin: 28px 0 0;
  display: flex;
  flex-direction: column;
  gap: 14px;
}
.contact-list li {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 18px 22px;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: #fff;
}
.contact-list-label {
  font-size: 0.75rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-muted);
  font-weight: 700;
}
.contact-form {
  display: flex;
  flex-direction: column;
  gap: 16px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 32px;
  box-shadow: var(--shadow-card);
}
.contact-form label {
  display: flex;
  flex-direction: column;
  gap: 6px;
  font-weight: 600;
  font-size: 0.88rem;
}
.contact-form input,
.contact-form textarea {
  font: inherit;
  padding: 12px 14px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: #fff;
  color: var(--text);
}
.contact-form input:focus,
.contact-form textarea:focus {
  outline: none;
  border-color: var(--text);
}
.contact-form button { align-self: flex-start; cursor: pointer; margin-top: 4px; }
.contact-form-note { margin: 0; font-size: 0.85rem; color: var(--text-muted); }

/* --- Routes (contact page direct routing cards) --- */
.routes {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
  margin-top: 28px;
}
.route {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 22px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fff;
  transition: border-color 0.15s ease, transform 0.15s ease;
}
.route:hover {
  border-color: var(--text);
  transform: translateY(-1px);
}
.route-label {
  font-size: 0.75rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-muted);
  font-weight: 700;
}
.route-title { font-weight: 700; font-size: 1.05rem; }

/* --- Footer --- */
.site-footer {
  background: #0a0a0a;
  color: #cfcfcf;
  padding: 64px 0 40px;
  margin-top: 0;
}
.site-footer-inner {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
  gap: 40px;
  align-items: start;
}
.site-footer-brand-logo {
  height: 44px; width: auto;
  margin-bottom: 12px;
  filter: brightness(0) invert(1) opacity(0.92);
}
.site-footer-brand p { margin: 0; color: #999; max-width: 320px; }
.site-footer-links-col h4 {
  font-size: 0.78rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: #888;
  margin: 0 0 14px;
  font-weight: 700;
}
.site-footer-links-col a {
  display: block;
  color: #cfcfcf;
  font-weight: 500;
  padding: 4px 0;
}
.site-footer-links-col a:hover { color: #fff; }
.site-footer-meta {
  display: flex;
  flex-direction: column;
  gap: 8px;
  font-size: 0.9rem;
  color: #888;
}
.site-footer-meta a { color: #fff; font-weight: 500; }
.site-footer-bottom {
  border-top: 1px solid #1f1f1f;
  margin-top: 40px;
  padding-top: 20px;
  font-size: 0.82rem;
  color: #777;
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
}

/* --- Responsive --- */
@media (max-width: 900px) {
  .channel-cards { grid-template-columns: 1fr; }
  .cards-3 { grid-template-columns: 1fr; }
  .cards-4 { grid-template-columns: 1fr; }
  .split { grid-template-columns: 1fr; gap: 40px; }
  .outcomes { grid-template-columns: 1fr; }
  .routes { grid-template-columns: 1fr; }
  .site-footer-inner { grid-template-columns: 1fr 1fr; gap: 32px; }
  section { padding: 64px 0; }
}
@media (max-width: 760px) {
  .site-nav-toggle { display: block; }
  .site-nav-links {
    position: fixed;
    top: 72px;
    left: 0; right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    background: #fff;
    padding: 12px 20px 24px;
    border-bottom: 1px solid var(--line);
    transform: translateY(-110%);
    transition: transform 0.25s ease;
    box-shadow: 0 12px 24px rgba(0,0,0,0.06);
  }
  .site-nav-links.is-open { transform: translateY(0); }
  .site-nav-links a {
    padding: 14px 4px;
    border-bottom: 1px solid var(--line);
  }
  .site-nav-links a.site-nav-cta {
    margin-top: 12px;
    text-align: center;
    border-bottom: none;
  }
  .cta-box { padding: 32px; flex-direction: column; align-items: flex-start; }
  .site-footer-inner { grid-template-columns: 1fr; }
  .hero { padding: 64px 0 48px; }
}