/* DataGadt landing — palette matches the app's LIGHT theme exactly (white
   surfaces, near-black ink), so site and app read as one brand. Self-
   contained: no external fonts, no external requests. */

:root {
  --bg: #f2f2f3;
  --surface: #ffffff;
  --text: #1d1f20;
  --text-soft: #55585e;
  --text-mute: #888b91;
  --divider: #e3e3e5;
  --border: #d0d0d3;
  --ink: #16171a;          /* the one mark color — everything is black/white */
  --error: #b23a42;
  --ok: #2f7a4a;

  --wrap: 1040px;
  --pad: clamp(20px, 5vw, 72px);
  --font: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --mono: ui-monospace, "Cascadia Code", Consolas, "SF Mono", monospace;
}

* { box-sizing: border-box; }
html { background: var(--bg); }
body {
  margin: 0; background: var(--bg); color: var(--text);
  font-family: var(--font); font-size: 16px; line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}
.wrap { max-width: var(--wrap); margin: 0 auto; padding-inline: var(--pad); }
a { color: inherit; text-decoration: none; }

/* ---- blueprint motif: thin "+" registration marks at each corner ---- */
.blueprint { position: relative; }
.blueprint > .corner {
  position: absolute; width: 10px; height: 10px; pointer-events: none;
  background:
    linear-gradient(var(--ink), var(--ink)) center / 100% 1px no-repeat,
    linear-gradient(var(--ink), var(--ink)) center / 1px 100% no-repeat;
  opacity: 0.55;
}
.corner.tl { top: -5px; left: -5px; }
.corner.tr { top: -5px; right: -5px; }
.corner.bl { bottom: -5px; left: -5px; }
.corner.br { bottom: -5px; right: -5px; }

/* ---- nav ---- */
.nav {
  display: flex; align-items: center; gap: 24px;
  max-width: var(--wrap); margin: 0 auto; padding: 18px var(--pad);
  border-bottom: 1px solid var(--divider);
}
.brand { display: flex; align-items: center; gap: 12px; font-weight: 700; letter-spacing: -0.01em; }
.brand-name { font-size: 18px; }
.logomark { width: 36px; height: 36px; flex: none; color: var(--ink); }
.logomark svg { width: 100%; height: 100%; display: block; }
.nav-links { display: flex; gap: 22px; margin-left: auto; font-size: 14px; color: var(--text-soft); }
.nav-links a:hover { color: var(--text); }
.nav-cta { margin-left: 4px; }
.nav a[aria-current="page"] { color: var(--text); font-weight: 600; }

/* ---- buttons ---- */
.btn {
  display: inline-block; padding: 10px 20px; border-radius: 7px;
  font-size: 14px; font-weight: 600; cursor: pointer; border: 1px solid transparent;
  transition: background .15s, border-color .15s, transform .05s;
}
.btn:active { transform: translateY(1px); }
.btn-primary { background: var(--ink); color: #fff; border-color: var(--ink); }
.btn-primary:hover { background: #000; }
.btn-primary:disabled { opacity: 0.5; cursor: not-allowed; }
.btn-ghost { background: transparent; color: var(--text); border-color: var(--border); }
.btn-ghost:hover { border-color: var(--text); }
.btn-secondary { background: var(--surface); color: var(--text); border-color: var(--border); }
.btn-block { width: 100%; text-align: center; }
.nav .btn { padding: 8px 16px; }

/* ---- hero ---- */
.hero { padding: 72px 0 48px; }
h1 {
  margin: 0; font-weight: 700; letter-spacing: 0.01em; text-transform: uppercase;
  font-size: clamp(34px, 5.6vw, 62px); line-height: 1.04;
}
h1 span { display: block; }
.lede { max-width: 60ch; margin: 22px 0 0; font-size: 17px; line-height: 1.6; color: var(--text-soft); }
.cta-row { display: flex; gap: 12px; flex-wrap: wrap; margin-top: 28px; }
.fineprint { margin-top: 14px; font-size: 13px; color: var(--text-mute); }

/* ---- sections ---- */
.section { padding: 44px 0; }
.eyebrow {
  display: block; font-size: 13px; font-weight: 700; letter-spacing: 0.08em;
  text-transform: uppercase; color: var(--text); margin-bottom: 12px;
}
.section hr { height: 1px; border: 0; margin: 0 0 28px; background: var(--divider); }
h2 { font-size: 19px; text-transform: uppercase; margin: 0 0 8px; letter-spacing: 0.01em; }
h3 { font-size: 16px; margin: 0 0 6px; }

.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: clamp(16px, 3vw, 28px); }
.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: clamp(16px, 3vw, 28px); }

.card { background: var(--surface); border: 1px solid var(--divider); padding: 22px; }
.card p { margin: 0; font-size: 14px; line-height: 1.55; color: var(--text-soft); }

.feature { padding: 4px 2px; }
.feature-mark {
  display: inline-flex; width: 30px; height: 30px; align-items: center; justify-content: center;
  border: 1px solid var(--ink); color: var(--ink); border-radius: 6px;
  font-size: 15px; margin-bottom: 12px;
}
.feature p { margin: 0; font-size: 14px; color: var(--text-soft); }

/* ---- model table ---- */
.plate { background: var(--surface); border: 1px solid var(--divider); }
table { width: 100%; border-collapse: collapse; table-layout: fixed; }
th, td { text-align: left; padding: 14px 20px; font-size: 14px; vertical-align: top; }
th { font-size: 12px; text-transform: uppercase; letter-spacing: 0.06em; color: var(--text-mute); border-bottom: 1px solid var(--divider); }
td { color: var(--text-soft); border-bottom: 1px solid var(--divider); }
tr:last-child td { border-bottom: 0; }
td.tier { color: var(--text); font-weight: 600; width: 26%; }
.note { margin: 16px 0 0; font-size: 13px; color: var(--text-mute); }

/* ---- pricing / tags ---- */
.tag {
  display: inline-block; font-size: 12px; font-weight: 700; letter-spacing: 0.06em;
  text-transform: uppercase; color: var(--text); margin-bottom: 8px;
}
.price { display: block; font-size: 30px; font-weight: 700; line-height: 1; margin-bottom: 10px; }
.tags { display: flex; gap: 8px; flex-wrap: wrap; margin-top: 18px; }
.tag-outline {
  font-size: 12px; padding: 4px 10px; border: 1px solid var(--border);
  border-radius: 999px; color: var(--text-soft);
}
.prose { max-width: 64ch; margin: 0; font-size: 15px; line-height: 1.65; color: var(--text-soft); }

/* ---- download / footer ---- */
.download { border-top: 1px solid var(--divider); }
.download-title { font-size: 24px; text-transform: uppercase; margin: 0 0 8px; }
footer {
  display: flex; justify-content: space-between; flex-wrap: wrap; gap: 8px;
  padding: 32px var(--pad); margin-top: 24px; border-top: 1px solid var(--divider);
  font-size: 13px; color: var(--text-mute);
}

/* ---- login / forms ---- */
.login-wrap { max-width: 480px; margin: 0 auto; padding: 0 var(--pad); }
.seg { display: inline-flex; border: 1px solid var(--border); border-radius: 7px; overflow: hidden; margin-bottom: 24px; }
.seg-opt {
  display: flex; align-items: center; gap: 6px; padding: 7px 16px;
  font-size: 13px; font-weight: 600; color: var(--text-soft); cursor: pointer;
}
.seg-opt.active { background: var(--ink); color: #fff; }
.seg-opt input { display: none; }
.field { display: flex; flex-direction: column; gap: 6px; }
.field label { font-size: 13px; font-weight: 600; color: var(--text-soft); }
.input {
  padding: 10px 12px; font-size: 14px; border: 1px solid var(--border);
  border-radius: 6px; background: var(--surface); color: var(--text); font-family: inherit;
}
.input:focus { outline: none; border-color: var(--ink); }
.form-msg { font-size: 13px; margin-top: 4px; min-height: 18px; }
.form-msg.error { color: var(--error); }
.form-msg.ok { color: var(--ok); }

/* ---- responsive ---- */
@media (max-width: 720px) {
  .nav-links { display: none; }
  .grid-3, .grid-2 { grid-template-columns: 1fr; }
  th, td { padding: 12px 14px; }
}