/* Shared design tokens + components for the marketing site: the homepage
   (index.php) and every page under /features/. Keeping this in one file
   means changing a color or spacing rule once updates every page. */

:root{
  --bg:#f7f4ee; --surface:#ffffff; --text:#15130f; --muted:#6f6a5c; --border:#e6e0d3;
  --amber:#c8892a; --amber-ink:#8a5c14; --teal:#136b58; --teal-bright:#1f9c80;
  --rust:#b6512c;
  --dark:#111318; --dark-2:#1a1d24; --dark-border:rgba(255,255,255,.12); --dark-muted:#d3cec0;
  --radius:14px;
  --shadow: 0 1px 2px rgba(20,15,5,.04), 0 10px 30px -14px rgba(20,15,5,.18);
}
@media (prefers-color-scheme: dark){
  :root{
    --bg:#15130f; --surface:#1c1a15; --text:#f3efe5; --muted:#a89f8d; --border:#332f26;
    --shadow: 0 1px 2px rgba(0,0,0,.3), 0 10px 30px -14px rgba(0,0,0,.5);
  }
}
*{ box-sizing:border-box; }
html{ scroll-behavior:smooth; }
body{
  margin:0; background:var(--bg); color:var(--text);
  font-family:'IBM Plex Sans', -apple-system, BlinkMacSystemFont, sans-serif;
  font-size:16px; line-height:1.55; -webkit-font-smoothing:antialiased;
}
h1,h2,h3,.display{
  font-family:'Big Shoulders Display', 'IBM Plex Sans', sans-serif;
  font-weight:700; letter-spacing:.01em; text-transform:uppercase; text-wrap:balance;
  margin:0;
}
.mono{ font-family:'IBM Plex Mono', ui-monospace, monospace; font-variant-numeric:tabular-nums; }
a{ color:inherit; }
img{ max-width:100%; }
.wrap{ max-width:1140px; margin:0 auto; padding:0 24px; }
.btn{
  display:inline-flex; align-items:center; gap:8px; padding:13px 22px; border-radius:9px;
  font-weight:600; font-size:15px; text-decoration:none; border:1.5px solid transparent; cursor:pointer;
  transition:transform .15s ease, box-shadow .15s ease, background-color .15s ease, border-color .15s ease;
}
.btn:active{ transform:translateY(1px); }
.btn-primary{ background:var(--amber); color:#1c1305; border-color:var(--amber); }
.btn-primary:hover{ background:#d99a37; box-shadow:0 8px 20px -8px rgba(200,137,42,.6); }
.btn-ghost-dark{ background:transparent; color:#f3efe5; border-color:rgba(255,255,255,.35); }
.btn-ghost-dark:hover{ border-color:#fff; background:rgba(255,255,255,.06); }
.btn-ghost-light{ background:transparent; color:var(--text); border-color:var(--border); }
.btn-ghost-light:hover{ border-color:var(--amber-ink); }
.kicker{
  display:inline-flex; align-items:center; gap:8px; font-family:'IBM Plex Mono',monospace;
  font-size:12px; letter-spacing:.14em; text-transform:uppercase; color:var(--amber);
}
.kicker::before{ content:''; width:7px; height:7px; border-radius:50%; background:var(--teal-bright); box-shadow:0 0 0 3px rgba(31,156,128,.25); }

/* ---------- header ---------- */
header{ position:sticky; top:0; z-index:40; padding:18px 0; transition:padding .25s ease, background-color .25s ease, box-shadow .25s ease; background:var(--bg); }
header .wrap{ display:flex; align-items:center; justify-content:space-between; }
header.scrolled{ box-shadow:0 1px 0 var(--border); padding:12px 0; }
.brand{ text-decoration:none; display:flex; align-items:baseline; gap:8px; white-space:nowrap; }
.brand .display{ font-size:22px; }
.brand .tag{ font-family:'IBM Plex Mono',monospace; font-size:10px; letter-spacing:.12em; color:var(--muted); text-transform:uppercase; }
nav.site-nav{ display:flex; align-items:center; gap:26px; }
nav.site-nav a.navlink{ text-decoration:none; font-size:14.5px; font-weight:500; color:var(--text); opacity:.8; }
nav.site-nav a.navlink:hover{ opacity:1; }
nav.site-nav .btn{ white-space:nowrap; }
@media (max-width:760px){ nav.site-nav a.navlink{ display:none; } }
@media (max-width:480px){
  .brand .tag{ display:none; } .brand .display{ font-size:18px; }
  nav.site-nav .btn{ padding:10px 14px; font-size:13.5px; }
}

/* ---------- generic sections ---------- */
section{ padding:88px 0; }
.section-head{ max-width:640px; margin:0 auto 48px; text-align:center; }
.section-head h2{ font-size:clamp(28px,4vw,40px); margin-top:12px; }
.section-head p{ color:var(--muted); font-size:16px; margin-top:14px; }

footer.site-footer{ padding:32px 0; text-align:center; color:var(--muted); font-size:13px; }
footer.site-footer a{ color:var(--amber-ink); text-decoration:none; }

/* ---------- feature detail page ---------- */
.detail-hero{ background:var(--dark); color:#f3efe5; padding:52px 0 64px; }
.back-link{
  display:flex; width:max-content; align-items:center; gap:6px; font-family:'IBM Plex Mono',monospace;
  font-size:12.5px; letter-spacing:.06em; color:var(--dark-muted); text-decoration:none; margin-bottom:22px;
}
.back-link:hover{ color:#fff; }
.detail-hero h1{ font-size:clamp(32px,5vw,50px); line-height:1; color:#fff; max-width:16ch; margin:14px 0 18px; }
.detail-hero .lede{ font-size:17px; color:var(--dark-muted); max-width:56ch; margin:0 0 26px; }
.detail-hero .cta-row{ display:flex; gap:12px; flex-wrap:wrap; }

/* the "screenshot" browser-chrome frame */
.shot-frame{
  background:var(--dark-2); border:1px solid var(--dark-border); border-radius:16px;
  overflow:hidden; box-shadow:0 30px 60px -30px rgba(0,0,0,.65); margin-top:-30px; position:relative; z-index:5;
}
.shot-chrome{ display:flex; align-items:center; gap:8px; padding:12px 16px; border-bottom:1px solid var(--dark-border); }
.shot-chrome .dot{ width:10px; height:10px; border-radius:50%; background:rgba(255,255,255,.18); }
.shot-chrome .url{
  margin-left:10px; font-family:'IBM Plex Mono',monospace; font-size:11.5px; color:var(--dark-muted);
  background:rgba(255,255,255,.05); border:1px solid var(--dark-border); border-radius:6px; padding:4px 10px;
}
.shot-body{ background:#0d0f13; }
.shot-body img{ display:block; width:100%; height:auto; }
.shot-placeholder{
  display:flex; flex-direction:column; align-items:center; justify-content:center; gap:10px;
  padding:90px 24px; color:var(--dark-muted); font-family:'IBM Plex Mono',monospace; font-size:13px; text-align:center;
}
.shot-placeholder svg{ width:40px; height:40px; opacity:.5; }

/* explanation content */
.detail-body{ padding-top:80px; }
.detail-grid{ display:grid; grid-template-columns:1.1fr .9fr; gap:64px; align-items:start; }
@media (max-width:900px){ .detail-grid{ grid-template-columns:1fr; gap:40px; } }
.detail-copy h2{ font-size:clamp(24px,3.4vw,32px); margin-bottom:16px; }
.detail-copy p{ color:var(--muted); font-size:15.5px; margin:0 0 16px; max-width:60ch; }
.detail-copy p:last-child{ margin-bottom:0; }

.point-list{ display:flex; flex-direction:column; gap:18px; }
.point{
  background:var(--surface); border:1px solid var(--border); border-radius:12px; padding:18px 20px;
  box-shadow:var(--shadow);
}
.point h3{ font-size:15px; text-transform:none; letter-spacing:0; margin-bottom:6px; display:flex; align-items:center; gap:8px; }
.point h3 svg{ width:18px; height:18px; color:var(--teal); flex:none; }
.point p{ margin:0; font-size:13.5px; color:var(--muted); }

.related{ background:var(--surface); border-top:1px solid var(--border); border-bottom:1px solid var(--border); }
.related-grid{ display:grid; grid-template-columns:repeat(3,1fr); gap:18px; }
@media (max-width:760px){ .related-grid{ grid-template-columns:1fr; } }
.related-card{
  display:block; text-decoration:none; background:var(--bg); border:1px solid var(--border); border-radius:12px;
  padding:20px; transition:border-color .15s ease, transform .15s ease;
}
.related-card:hover{ border-color:var(--amber-ink); transform:translateY(-2px); }
.related-card .icon{ width:26px; height:26px; color:var(--amber); margin-bottom:10px; }
.related-card h4{ font-size:14.5px; text-transform:none; letter-spacing:0; margin-bottom:5px; }
.related-card p{ margin:0; font-size:13px; color:var(--muted); }

.cta-band{ background:var(--dark); color:#f3efe5; text-align:center; }
.cta-band h2{ color:#fff; font-size:clamp(28px,4.4vw,42px); }
.cta-band p{ color:var(--dark-muted); max-width:52ch; margin:14px auto 30px; }
.cta-band .cta-row{ display:flex; gap:12px; justify-content:center; flex-wrap:wrap; }