/* Pilot — one stylesheet for the marketing site and the app.
   Dark by default; the app is a working tool that people leave open. */

:root {
  --bg:        #0a0c10;
  --panel:     #12151c;
  --panel-2:   #171b24;
  --line:      #232936;
  --line-soft: #1b202a;
  --ink:       #e8ecf4;
  --ink-2:     #9aa4b8;
  --ink-3:     #6b7588;
  --accent:    #5b8cff;
  --accent-2:  #7aa2ff;
  --ok:        #3ecf8e;
  --warn:      #f0b429;
  --bad:       #f4685f;
  --radius:    10px;
  --mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, monospace;
  --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Inter, Roboto, Helvetica, Arial, sans-serif;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font: 15px/1.6 var(--sans);
  -webkit-font-smoothing: antialiased;
}

a { color: var(--accent-2); text-decoration: none; }
a:hover { text-decoration: underline; }
h1, h2, h3 { line-height: 1.25; margin: 0 0 .5em; font-weight: 640; letter-spacing: -.015em; }
h1 { font-size: clamp(30px, 5vw, 46px); }
h2 { font-size: clamp(22px, 3vw, 30px); }
h3 { font-size: 17px; }
p  { margin: 0 0 1em; }
.muted { color: var(--ink-2); }
.small { font-size: 13px; }
code, .mono { font-family: var(--mono); font-size: .92em; }

/* ---------------------------------------------------------------- chrome */

.nav {
  display: flex; align-items: center; gap: 22px;
  padding: 14px 22px;
  border-bottom: 1px solid var(--line);
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  position: sticky; top: 0; z-index: 20;
  backdrop-filter: blur(8px);
}
.brand { color: var(--ink); font-weight: 680; letter-spacing: -.02em; display: inline-flex; gap: 8px; align-items: center; }
.brand:hover { text-decoration: none; }
.mark { color: var(--accent); }
.nav-links { display: flex; gap: 18px; flex: 1; flex-wrap: wrap; }
.nav-links a { color: var(--ink-2); font-size: 14px; padding: 4px 0; border-bottom: 2px solid transparent; }
.nav-links a:hover { color: var(--ink); text-decoration: none; }
.nav-links a.on { color: var(--ink); border-bottom-color: var(--accent); }
.nav-cta { display: flex; gap: 10px; align-items: center; margin-left: auto; }

.foot { border-top: 1px solid var(--line); margin-top: 72px; padding: 32px 22px; }
.foot-in { max-width: 1080px; margin: 0 auto; display: grid; gap: 8px; }
.foot nav { display: flex; gap: 16px; flex-wrap: wrap; font-size: 14px; }

.wrap { max-width: 1080px; margin: 0 auto; padding: 32px 22px; }
.wrap.narrow { max-width: 620px; }

/* -------------------------------------------------------------- controls */

.btn {
  display: inline-flex; align-items: center; gap: 7px;
  padding: 8px 15px; border-radius: 8px;
  background: var(--accent); color: #fff;
  border: 1px solid transparent; cursor: pointer;
  font: 600 14px/1 var(--sans); white-space: nowrap;
}
.btn:hover { background: var(--accent-2); text-decoration: none; }
.btn.ghost { background: transparent; color: var(--ink); border-color: var(--line); }
.btn.ghost:hover { background: var(--panel-2); }
.btn.danger { background: transparent; color: var(--bad); border-color: color-mix(in srgb, var(--bad) 40%, transparent); }
.btn.small { padding: 5px 10px; font-size: 13px; }
.btn[disabled] { opacity: .5; cursor: not-allowed; }

label { display: block; font-size: 13px; color: var(--ink-2); margin: 0 0 5px; }
input[type=text], input[type=url], input[type=email], input[type=password],
input[type=number], select, textarea {
  width: 100%; padding: 9px 11px;
  background: var(--panel); color: var(--ink);
  border: 1px solid var(--line); border-radius: 8px;
  font: 14px/1.5 var(--sans);
}
textarea { min-height: 140px; font-family: var(--mono); font-size: 13px; resize: vertical; }
input:focus, textarea:focus, select:focus {
  outline: none; border-color: var(--accent);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--accent) 22%, transparent);
}
.field { margin: 0 0 16px; }
.hint { font-size: 12.5px; color: var(--ink-3); margin-top: 5px; }

/* ---------------------------------------------------------------- panels */

.card {
  background: var(--panel); border: 1px solid var(--line);
  border-radius: var(--radius); padding: 18px;
}
.card + .card { margin-top: 14px; }
.card h3 { margin-bottom: .35em; }
.grid { display: grid; gap: 14px; }
.grid.two   { grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); }
.grid.three { grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); }
.row { display: flex; gap: 10px; align-items: center; flex-wrap: wrap; }
.row.between { justify-content: space-between; }
.spacer { flex: 1; }

.stat { background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius); padding: 16px; }
.stat .k { font-size: 12px; text-transform: uppercase; letter-spacing: .07em; color: var(--ink-3); }
.stat .v { font-size: 27px; font-weight: 660; letter-spacing: -.02em; margin-top: 5px; }
.stat .s { font-size: 12.5px; color: var(--ink-2); margin-top: 3px; }
.stat .v.ok  { color: var(--ok); }
.stat .v.bad { color: var(--bad); }

.chip {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 3px 9px; border-radius: 999px;
  font-size: 12px; font-weight: 600;
  border: 1px solid var(--line); color: var(--ink-2); background: var(--panel-2);
}
.chip.ok   { color: var(--ok);   border-color: color-mix(in srgb, var(--ok) 35%, transparent); }
.chip.warn { color: var(--warn); border-color: color-mix(in srgb, var(--warn) 35%, transparent); }
.chip.bad  { color: var(--bad);  border-color: color-mix(in srgb, var(--bad) 35%, transparent); }

.flash {
  border-radius: 8px; padding: 11px 14px; margin: 0 0 18px;
  border: 1px solid var(--line); background: var(--panel-2); font-size: 14px;
}
.flash.ok  { border-color: color-mix(in srgb, var(--ok) 40%, transparent); }
.flash.bad { border-color: color-mix(in srgb, var(--bad) 45%, transparent); color: #ffd9d6; }

/* --------------------------------------------------------------- tables */

.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; font-size: 14px; }
th, td { text-align: left; padding: 9px 12px; border-bottom: 1px solid var(--line-soft); }
th { font-size: 12px; text-transform: uppercase; letter-spacing: .06em; color: var(--ink-3); font-weight: 600; }
td.num, th.num { text-align: right; font-family: var(--mono); font-size: 13px; }
tbody tr:hover { background: var(--panel-2); }

/* ----------------------------------------------------------- experiments */

.exp { border: 1px solid var(--line); border-radius: var(--radius); background: var(--panel); padding: 16px; }
.exp + .exp { margin-top: 12px; }
.exp .head { display: flex; gap: 10px; align-items: baseline; flex-wrap: wrap; }
.exp .title { font-weight: 640; font-size: 16px; }
.exp .hyp { color: var(--ink-2); font-size: 14px; margin: 8px 0 10px; }
.exp ol { margin: 0 0 12px; padding-left: 20px; color: var(--ink-2); font-size: 14px; }
.exp li { margin: 3px 0; }
.exp .metrics { display: flex; gap: 18px; flex-wrap: wrap; font-size: 13px; color: var(--ink-2); font-family: var(--mono); }

.draft {
  background: #0d1016; border: 1px solid var(--line);
  border-radius: 8px; padding: 13px;
  font-family: var(--mono); font-size: 13px; line-height: 1.65;
  white-space: pre-wrap; word-break: break-word;
}

/* ------------------------------------------------------------- marketing */

.hero { padding: 80px 22px 56px; max-width: 900px; margin: 0 auto; }
.hero h1 { max-width: 16ch; }
.hero .lede { font-size: 19px; color: var(--ink-2); max-width: 58ch; }
.hero form { display: flex; gap: 10px; margin-top: 26px; flex-wrap: wrap; }
.hero input { flex: 1; min-width: 260px; }

.section { padding: 48px 22px; max-width: 1080px; margin: 0 auto; }
.section > h2 { max-width: 22ch; }
.lead { color: var(--ink-2); max-width: 62ch; font-size: 16px; }

.steps { counter-reset: s; display: grid; gap: 14px; margin-top: 26px; }
.step { background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius); padding: 16px 18px; }
.step h3::before {
  counter-increment: s; content: counter(s);
  display: inline-grid; place-items: center;
  width: 22px; height: 22px; margin-right: 9px; border-radius: 6px;
  background: color-mix(in srgb, var(--accent) 22%, transparent);
  color: var(--accent-2); font: 600 12px/1 var(--mono);
}
.step p { margin: 0; color: var(--ink-2); font-size: 14.5px; }

.dont { border-left: 3px solid var(--warn); padding-left: 16px; margin: 0 0 18px; }
.dont h3 { margin-bottom: .2em; }
.dont p { color: var(--ink-2); margin: 0; font-size: 14.5px; }

@media (max-width: 640px) {
  .nav { gap: 12px; padding: 12px 16px; }
  .nav-links { order: 3; width: 100%; gap: 14px; }
  .hero { padding: 48px 18px 36px; }
}