/* Databanking — shared site styles */

:root{
  --bg: #fafaf8;
  --bg-alt: #f1f0ec;
  --ink: #1b1d22;
  --ink-soft: #4a4d57;
  --line: #e3e1d9;
  --accent: #146356;
  --accent-soft: #e4efec;
  --accent-ink: #0e463d;
  --warn-bg: #fbeee0;
  --warn-ink: #7a4a12;
  --radius: 14px;
  --maxw: 1080px;
  --shadow: 0 1px 2px rgba(20,20,15,0.04), 0 8px 24px rgba(20,20,15,0.05);
}

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

body{
  margin:0;
  background:var(--bg);
  color:var(--ink);
  font-family:"Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
}

a{color:var(--accent-ink); text-decoration:none;}
a:hover{text-decoration:underline;}

.wrap{
  max-width:var(--maxw);
  margin:0 auto;
  padding:0 28px;
}

/* ---- Nav ---- */
.site-nav{
  border-bottom:1px solid var(--line);
  background:rgba(250,250,248,0.92);
  backdrop-filter:saturate(180%) blur(6px);
  position:sticky;
  top:0;
  z-index:20;
}
.site-nav .wrap{
  display:grid;
  grid-template-columns:1fr auto 1fr;
  align-items:center;
  height:64px;
}
.site-nav .brand{justify-self:start;}
.site-nav .nav-links{justify-self:center;}
.site-nav .nav-cta{justify-self:end;}
.brand{
  display:flex;
  align-items:center;
  gap:10px;
  font-weight:700;
  font-size:1.05rem;
  color:var(--ink);
}
.brand .mark{
  width:26px;height:26px;
  border-radius:7px;
  background:var(--accent);
  display:inline-flex;
  align-items:center;justify-content:center;
  color:#fff;font-size:0.8rem;font-weight:800;
}
.nav-links{
  display:flex;
  align-items:center;
  gap:28px;
  font-size:0.95rem;
  font-weight:500;
}
.nav-links a{color:var(--ink-soft);}
.nav-links a.current{color:var(--accent-ink);}
.nav-cta{
  display:inline-block;
  padding:8px 16px;
  border-radius:999px;
  background:var(--ink);
  color:#fff !important;
  font-size:0.9rem;
  font-weight:600;
  text-decoration:none !important;
}
.nav-cta:hover{background:var(--accent-ink);}

/* Case-studies dropdown (CSS-only, via <details>/<summary>) */
.nav-dropdown{position:relative;}
.nav-dropdown summary{
  list-style:none;
  cursor:pointer;
  color:var(--ink-soft);
  display:inline-flex;
  align-items:center;
  gap:4px;
}
.nav-dropdown summary::-webkit-details-marker{display:none;}
.nav-dropdown summary::after{content:"▾"; font-size:0.65em; position:relative; top:1px;}
.nav-dropdown[open] > summary{color:var(--accent-ink);}
.nav-dropdown .nav-dropdown-menu{
  position:absolute;
  top:100%;
  left:50%;
  transform:translateX(-50%);
  margin-top:12px;
  background:#fff;
  border:1px solid var(--line);
  border-radius:10px;
  box-shadow:var(--shadow);
  padding:6px;
  min-width:180px;
  display:flex;
  flex-direction:column;
  z-index:30;
}
.nav-dropdown .nav-dropdown-menu a{
  padding:8px 10px;
  border-radius:6px;
  white-space:nowrap;
  color:var(--ink-soft);
}
.nav-dropdown .nav-dropdown-menu a:hover{background:var(--bg-alt); text-decoration:none;}

/* Mobile hamburger (CSS-only, via checkbox hack) */
.nav-toggle-input{position:absolute; opacity:0; pointer-events:none;}
.nav-toggle-btn{display:none;}

/* ---- Hero ---- */
.hero{
  padding:88px 0 64px;
  border-bottom:1px solid var(--line);
}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:0.78rem;
  letter-spacing:0.08em;
  text-transform:uppercase;
  font-weight:700;
  color:var(--accent-ink);
  background:var(--accent-soft);
  padding:6px 12px;
  border-radius:999px;
  margin-bottom:22px;
}
.hero h1{
  font-size:clamp(2.2rem, 4.5vw, 3.4rem);
  line-height:1.1;
  letter-spacing:-0.01em;
  margin:0 0 20px;
  max-width:18ch;
}
.hero .lede{
  font-size:1.2rem;
  color:var(--ink-soft);
  max-width:640px;
  margin:0 0 32px;
}
.hero-actions{
  display:flex;
  gap:14px;
  flex-wrap:wrap;
}
.btn{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:13px 22px;
  border-radius:10px;
  font-weight:600;
  font-size:0.98rem;
  border:1px solid transparent;
  cursor:pointer;
}
.btn-primary{background:var(--ink); color:#fff;}
.btn-primary:hover{background:var(--accent-ink); text-decoration:none;}
.btn-secondary{background:transparent; color:var(--ink); border-color:var(--line);}
.btn-secondary:hover{background:var(--bg-alt); text-decoration:none;}

/* ---- Sections ---- */
section{padding:64px 0;}
.section-head{max-width:680px; margin-bottom:40px;}
.section-head .kicker{
  font-size:0.8rem;
  font-weight:700;
  letter-spacing:0.08em;
  text-transform:uppercase;
  color:var(--accent-ink);
  margin-bottom:10px;
  display:block;
}
.section-head h2{
  font-size:clamp(1.6rem, 3vw, 2.1rem);
  margin:0 0 14px;
  letter-spacing:-0.01em;
}
.section-head p{color:var(--ink-soft); font-size:1.05rem; margin:0;}

.alt{background:var(--bg-alt); border-top:1px solid var(--line); border-bottom:1px solid var(--line);}

/* ---- Flow comparison ---- */
.flow-diagram{
  text-align:center;
  margin:8px 0 0;
}
.flow-diagram img{
  width:100%;
  max-width:780px;
  border-radius:var(--radius);
  background:#fff;
  border:1px solid var(--line);
  padding:18px;
}
figure{margin:0;}
figcaption{
  text-align:center;
  font-size:0.92rem;
  color:var(--ink-soft);
  margin-top:14px;
}

/* ---- Cards ---- */
.grid{
  display:grid;
  gap:20px;
  grid-template-columns:repeat(2, 1fr);
}
.grid.cols-4{grid-template-columns:repeat(4, 1fr);}
.grid.cols-3{grid-template-columns:repeat(3, 1fr);}

.card{
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--radius);
  padding:26px;
  box-shadow:var(--shadow);
}
.card .num{
  display:inline-flex;
  align-items:center;justify-content:center;
  width:34px;height:34px;
  border-radius:9px;
  background:var(--accent-soft);
  color:var(--accent-ink);
  font-weight:800;
  font-size:0.95rem;
  margin-bottom:16px;
}
.card h3{margin:0 0 10px; font-size:1.08rem;}
.card p{margin:0; color:var(--ink-soft); font-size:0.95rem;}

/* ---- Steps list ---- */
.steps{
  list-style:none;
  margin:0;
  padding:0;
  display:grid;
  gap:14px;
}
.steps li{
  display:flex;
  gap:16px;
  padding:18px 20px;
  background:#fff;
  border:1px solid var(--line);
  border-radius:12px;
}
.steps .tag{
  flex:0 0 auto;
  width:30px;height:30px;
  border-radius:50%;
  background:var(--ink);
  color:#fff;
  font-weight:700;
  font-size:0.88rem;
  display:flex;align-items:center;justify-content:center;
}
.steps .body strong{display:block; margin-bottom:2px;}
.steps .body span{color:var(--ink-soft); font-size:0.95rem;}

/* ---- Table ---- */
.table-wrap{
  overflow-x:auto;
  border:1px solid var(--line);
  border-radius:var(--radius);
  background:#fff;
}
table{
  width:100%;
  border-collapse:collapse;
  font-size:0.92rem;
}
th, td{
  text-align:left;
  padding:14px 18px;
  border-bottom:1px solid var(--line);
  vertical-align:top;
}
th{
  background:var(--bg-alt);
  font-weight:700;
  font-size:0.8rem;
  text-transform:uppercase;
  letter-spacing:0.04em;
  color:var(--ink-soft);
}
tr:last-child td{border-bottom:none;}
.tag-pill{
  display:inline-block;
  padding:3px 10px;
  border-radius:999px;
  font-size:0.78rem;
  font-weight:700;
}
.tag-strong{background:#e3f2e9; color:#1d6b3f;}
.tag-partial{background:#fdf0d8; color:#9a6612;}
.tag-weak{background:#fbe6e1; color:#a3401f;}
.tag-gap{background:#f4d9e0; color:#9c1f4d;}

/* ---- Code-like blocks ---- */
.kvs{
  display:grid;
  grid-template-columns:repeat(3, 1fr);
  gap:14px;
  margin:24px 0 0;
}
.kv{
  background:#fff;
  border:1px solid var(--line);
  border-radius:12px;
  padding:18px;
}
.kv .label{font-size:0.78rem; color:var(--ink-soft); text-transform:uppercase; letter-spacing:0.05em; margin-bottom:6px;}
.kv .value{font-weight:700;}

pre{
  background:#16181c;
  color:#e7e9ee;
  border-radius:12px;
  padding:20px;
  overflow-x:auto;
  font-size:0.86rem;
  line-height:1.55;
}
code{font-family:"SF Mono", Menlo, Consolas, monospace;}

.callout{
  border-left:4px solid var(--accent);
  background:var(--accent-soft);
  padding:18px 20px;
  border-radius:10px;
  font-size:0.95rem;
  color:var(--accent-ink);
}
.callout.warn{
  border-left-color:#c97a1f;
  background:var(--warn-bg);
  color:var(--warn-ink);
}

/* ---- Page hero (sub-pages) ---- */
.page-hero{
  padding:56px 0 40px;
  border-bottom:1px solid var(--line);
}
.page-hero .kicker{
  font-size:0.8rem;
  font-weight:700;
  letter-spacing:0.08em;
  text-transform:uppercase;
  color:var(--accent-ink);
  margin-bottom:14px;
  display:block;
}
.page-hero h1{
  font-size:clamp(1.9rem, 4vw, 2.6rem);
  margin:0 0 16px;
  letter-spacing:-0.01em;
}
.page-hero p{font-size:1.08rem; color:var(--ink-soft); max-width:680px; margin:0;}
.breadcrumb{
  font-size:0.88rem;
  color:var(--ink-soft);
  margin-bottom:18px;
}
.breadcrumb a{color:var(--ink-soft);}

.prose{max-width:720px;}
.prose h2{font-size:1.4rem; margin:40px 0 16px;}
.prose h3{font-size:1.1rem; margin:28px 0 10px;}
.prose p{color:var(--ink-soft); margin:0 0 16px;}
.prose ul{color:var(--ink-soft); padding-left:1.2em;}
.prose li{margin-bottom:8px;}

/* ---- Footer ---- */
footer{
  border-top:1px solid var(--line);
  padding:48px 0 56px;
  margin-top:40px;
}
footer .wrap{
  display:flex;
  justify-content:space-between;
  align-items:flex-start;
  flex-wrap:wrap;
  gap:24px;
}
footer .f-links{display:flex; gap:24px; flex-wrap:wrap;}
footer .f-links a{color:var(--ink-soft); font-size:0.92rem;}
footer .f-note{color:var(--ink-soft); font-size:0.85rem; max-width:420px;}

/* ---- Responsive ---- */
@media (max-width: 860px){
  .grid.cols-4{grid-template-columns:repeat(2, 1fr);}
  .grid.cols-3{grid-template-columns:repeat(2, 1fr);}
  .grid.cols-3 .card-wide{grid-column:1 / -1;}
  .kvs{grid-template-columns:1fr;}
}
@media (max-width: 640px){
  .site-nav .wrap{
    grid-template-columns:1fr auto;
    height:auto;
    min-height:56px;
  }
  .nav-toggle-btn{
    display:flex;
    justify-self:end;
    align-items:center;
    justify-content:center;
    width:32px;height:32px;
    font-size:1.4rem;
    line-height:1;
    cursor:pointer;
    color:var(--ink);
  }
  .nav-links,
  .nav-cta{
    display:none;
    grid-column:1 / -1;
  }
  .nav-links{
    flex-direction:column;
    align-items:flex-start;
    gap:2px;
    padding:8px 0 4px;
    width:100%;
  }
  .nav-links a{padding:8px 2px; width:100%;}
  .nav-cta{
    justify-self:start;
    margin:4px 0 16px;
  }
  .nav-toggle-input:checked ~ .nav-links,
  .nav-toggle-input:checked ~ .nav-cta{
    display:flex;
  }
  .nav-dropdown{width:100%;}
  .nav-dropdown summary{padding:8px 2px; width:100%;}
  .nav-dropdown .nav-dropdown-menu{
    position:static;
    transform:none;
    box-shadow:none;
    border:none;
    margin:0 0 0 14px;
    padding:0;
  }
  .nav-dropdown .nav-dropdown-menu a{padding:6px 8px;}

  .grid{grid-template-columns:1fr;}
  .grid.cols-4{grid-template-columns:1fr;}
  .grid.cols-3{grid-template-columns:1fr;}
  .hero{padding:56px 0 40px;}
  section{padding:48px 0;}
}