/* DataPlot landing page (D-078, D-087). A static site, separate from the app in
   ui/dist: same visual identity "Grade" (D-069), ink on paper, hairlines,
   red only for the plotted point. Light or dark follows the system. */

@font-face { font-family: "Instrument Sans"; src: url("fonts/InstrumentSans.woff2") format("woff2"); font-weight: 400 700; font-style: normal; font-display: swap; }
@font-face { font-family: "JetBrains Mono"; src: url("fonts/JetBrainsMono.woff2") format("woff2"); font-weight: 400 700; font-style: normal; font-display: swap; }

:root {
  --paper: #ffffff;
  --ink: #111111;
  --ink-soft: #6a6a6a;
  --hair: #e3e3e3;
  --dot: #e0301e;
  --tint: rgba(17, 17, 17, .04);
  --tint-2: rgba(17, 17, 17, .09);
  --grid: rgba(17, 17, 17, .04);
  --font-ui: "Instrument Sans", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --mono: "JetBrains Mono", ui-monospace, "Cascadia Mono", Consolas, monospace;
  --wrap: 1120px;
  color-scheme: light dark;
}
@media (prefers-color-scheme: dark) {
  :root {
    --paper: #121417;
    --ink: #ececec;
    --ink-soft: #8f949c;
    --hair: #2a2d33;
    --dot: #ff5a45;
    --tint: rgba(236, 236, 236, .05);
    --tint-2: rgba(236, 236, 236, .11);
    --grid: rgba(236, 236, 236, .045);
  }
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; background: var(--paper); color: var(--ink); font: 16px/1.55 var(--font-ui); }
a { color: var(--ink); }
a:focus-visible { outline: 1px solid var(--dot); outline-offset: 3px; }
code, pre, .mono { font-family: var(--mono); }
code { font-size: .88em; }
h1, h2, h3 { margin: 0; font-weight: 600; letter-spacing: -.02em; }
p { margin: 0 0 1em; }
.wrap { max-width: var(--wrap); margin: 0 auto; padding: 0 24px; }
.muted { color: var(--ink-soft); }
.eyebrow { margin: 0 0 10px; font: 600 12px/1.3 var(--font-ui); letter-spacing: .07em; text-transform: uppercase; color: var(--ink-soft); }

/* ---- header ---- */
.top { position: sticky; top: 0; z-index: 5; background: var(--paper); border-bottom: 1px solid var(--ink); }
.top .wrap { display: flex; align-items: center; gap: 12px 28px; min-height: 58px; flex-wrap: wrap; }
.wordmark { font: 600 21px/1 var(--font-ui); letter-spacing: -.02em; text-decoration: none; display: inline-flex; align-items: baseline; }
.wordmark .pt { display: inline-block; width: 7px; height: 7px; margin-left: 3px; background: var(--dot); }
.top nav { display: flex; gap: 22px; margin-left: auto; flex-wrap: wrap; }
.top nav a { color: var(--ink-soft); text-decoration: none; font-size: 14.5px; }
.top nav a:hover { color: var(--ink); }
.lang { font: 600 12px/1 var(--font-ui); letter-spacing: .06em; text-transform: uppercase; display: flex; border: 1px solid var(--ink); }
.lang a, .lang span { padding: 5px 9px; text-decoration: none; }
.lang span { background: var(--ink); color: var(--paper); }
.lang a { color: var(--ink-soft); }
.lang a:hover { color: var(--ink); }

/* ---- hero ---- */
.hero { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.05fr); gap: 40px 56px; align-items: center; padding: 64px 0 60px; }
.hero h1 { font-size: 50px; line-height: 1.04; letter-spacing: -.035em; margin-bottom: 20px; }
.hero .lede { font-size: 18.5px; color: var(--ink-soft); max-width: 52ch; margin-bottom: 28px; }
.cta { display: flex; gap: 14px 22px; align-items: center; flex-wrap: wrap; }
.btn { display: inline-block; padding: 10px 18px; border: 1px solid var(--ink); text-decoration: none; font-weight: 600; font-size: 15px; }
.btn.primary { background: var(--ink); color: var(--paper); }
.btn:hover { background: var(--tint-2); }
.btn.primary:hover { background: var(--ink); opacity: .85; }
.cmd { margin: 0; padding: 14px 16px; border: 1px solid var(--ink); background: var(--tint); font: 13.5px/1.6 var(--mono); overflow-x: auto; white-space: pre; }
.cmd .p { color: var(--ink-soft); user-select: none; }
.hero .cmd { margin-top: 26px; }
.hero-note { margin-top: 8px; font-size: 13.5px; color: var(--ink-soft); }

.plot { margin: 0; padding: 18px; border: 1px solid var(--hair);
  background: linear-gradient(var(--grid) 1px, transparent 1px) 0 0 / 20px 20px,
              linear-gradient(90deg, var(--grid) 1px, transparent 1px) 0 0 / 20px 20px, var(--paper); }
.plot svg { display: block; width: 100%; height: auto; }
.plot figcaption { margin-top: 10px; font-size: 13.5px; color: var(--ink-soft); }
.hp-grid line { stroke: var(--hair); stroke-width: 1; }
.hp-axis { fill: none; stroke: var(--ink); stroke-width: 1; }
.hp-line { fill: none; stroke: var(--ink); stroke-width: 1.4; stroke-linejoin: round; }
.hp-pt { fill: var(--dot); }
.hp-lead { fill: none; stroke: var(--ink-soft); stroke-width: 1; stroke-dasharray: 2 3; }
.hp-note { font: 600 12px var(--font-ui); fill: var(--ink); }
.hp-sub, .hp-ticks text { font: 11px var(--mono); fill: var(--ink-soft); }

/* ---- sections ---- */
.sec { padding: 64px 0; border-top: 1px solid var(--ink); }
.sec-head { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.4fr); gap: 16px 56px; margin-bottom: 36px; align-items: end; }
.sec-head h2 { font-size: 34px; line-height: 1.1; }
.sec-head p { margin: 0; color: var(--ink-soft); font-size: 17px; }

.traits { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 28px; }
.traits div { border-top: 1px solid var(--hair); padding-top: 14px; }
.traits h3 { font-size: 17px; margin-bottom: 6px; }
.traits p { margin: 0; font-size: 15px; color: var(--ink-soft); }
.traits code { color: var(--ink); }

.steps { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 28px; list-style: none; counter-reset: st; padding: 0; margin: 0 0 40px; }
.steps li { counter-increment: st; border-top: 1px solid var(--ink); padding-top: 14px; }
.steps li::before { content: counter(st, decimal-leading-zero); display: block; margin-bottom: 8px; font: 500 12.5px var(--mono); color: var(--ink-soft); }
.steps b { display: block; font-size: 17px; margin-bottom: 4px; }
.steps span { font-size: 15px; color: var(--ink-soft); }

.flow { display: block; width: 100%; height: auto; }
.hf-col text { font: 600 10.5px var(--font-ui); letter-spacing: .08em; fill: var(--ink-soft); }
.hf-box { fill: var(--paper); stroke: var(--ink); stroke-width: 1; }
.hf-tint { fill: var(--tint); }
.hf-dense { fill: var(--tint-2); stroke-width: 2; }
.hf-t { font: 13px var(--font-ui); fill: var(--ink); }
.hf-s { font: 11.5px var(--mono); fill: var(--ink-soft); }
.hf-ln { fill: none; stroke: var(--ink); stroke-width: 1; }
.hf-you { stroke-dasharray: 4 3; }
.flow-wrap { overflow-x: auto; }
.flow-wrap svg { min-width: 680px; }

/* packs: one row each, no cards */
.packs { border-bottom: 1px solid var(--hair); }
.pack { display: grid; grid-template-columns: minmax(0, 1.2fr) minmax(0, 1fr) minmax(0, 1fr); gap: 18px 40px; padding: 28px 0; border-top: 1px solid var(--hair); }
.pack h3 { font-size: 24px; margin-bottom: 8px; }
.tag { display: inline-block; margin-bottom: 10px; padding: 2px 8px; border: 1px solid var(--ink); font: 600 11.5px/1.5 var(--font-ui); letter-spacing: .06em; text-transform: uppercase; }
.pack p { font-size: 15.5px; color: var(--ink-soft); margin: 0; }
.pack h4 { margin: 0 0 8px; font: 600 12px/1.3 var(--font-ui); letter-spacing: .07em; text-transform: uppercase; color: var(--ink-soft); }
.pack ul { list-style: none; padding: 0; margin: 0; font-size: 15px; }
.pack li { padding: 3px 0; }
.pack li code { color: var(--ink-soft); }

.dests { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 28px; margin-bottom: 36px; }
.dests div { border-top: 1px solid var(--ink); padding-top: 14px; }
.dests h3 { font-size: 18px; margin-bottom: 6px; }
.dests p { margin: 0; font-size: 15px; color: var(--ink-soft); }

.shots { display: grid; grid-template-columns: minmax(0, 2.2fr) minmax(0, 1fr); gap: 28px; align-items: start; }
.shots figure { margin: 0; }
.shots img { display: block; width: 100%; height: auto; border: 1px solid var(--hair); background: #fff; }
.shots figcaption { margin-top: 10px; font-size: 14px; color: var(--ink-soft); }

.start { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 28px 56px; }
.start h3 { font-size: 18px; margin: 0 0 10px; }
.start .cmd + p { margin-top: 10px; }
.start p { font-size: 15px; color: var(--ink-soft); }

.faq { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 0 56px; }
.faq div { border-top: 1px solid var(--hair); padding: 16px 0 6px; }
.faq h3 { font-size: 17px; margin-bottom: 6px; }
.faq p { font-size: 15px; color: var(--ink-soft); }

/* contact form (D-079): fields are hairline boxes, the subject a segmented row like .lang */
[hidden] { display: none !important; }
.contact { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.4fr); gap: 28px 56px; align-items: start; }
.contact-head h2 { font-size: 34px; line-height: 1.1; margin-bottom: 14px; }
.contact-head p { color: var(--ink-soft); font-size: 17px; }
.contact-head .contact-note, .contact-note { font-size: 13.5px; color: var(--ink-soft); }
#contact-form { display: grid; gap: 18px; }
#contact-form fieldset { margin: 0; padding: 0; border: 0; min-width: 0; }
.kind legend, .field > span { display: block; margin-bottom: 7px; font: 600 12px/1.3 var(--font-ui); letter-spacing: .07em; text-transform: uppercase; color: var(--ink-soft); }
.field > span i { font-style: normal; font-weight: 400; letter-spacing: .02em; text-transform: none; }
.kind label { position: relative; display: inline-block; margin-right: -1px; }
.kind input { position: absolute; opacity: 0; inset: 0; margin: 0; cursor: pointer; }
.kind span { display: inline-block; padding: 8px 16px; border: 1px solid var(--ink); font-weight: 600; font-size: 14.5px; color: var(--ink-soft); }
.kind label:hover span { color: var(--ink); background: var(--tint); }
.kind input:checked + span { background: var(--ink); color: var(--paper); }
.kind input:focus-visible + span { outline: 1px solid var(--dot); outline-offset: 3px; }
.row { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 18px 28px; }
.field { display: block; min-width: 0; }
.field input, .field textarea { display: block; width: 100%; padding: 10px 12px; border: 1px solid var(--ink); border-radius: 0; background: var(--paper); color: var(--ink); font: 15px/1.5 var(--font-ui); }
.field textarea { resize: vertical; min-height: 140px; }
.field input:focus, .field textarea:focus { outline: none; box-shadow: inset 0 0 0 1px var(--ink); background: var(--tint); }
.field ::placeholder { color: var(--ink-soft); opacity: .8; }
.drop { position: relative; display: block; padding: 18px 16px; border: 1px dashed var(--ink-soft); background: var(--tint); font-size: 14.5px; color: var(--ink-soft); cursor: pointer; }
.drop b { color: var(--ink); text-decoration: underline; text-underline-offset: 3px; }
.drop input { position: absolute; width: 1px; height: 1px; opacity: 0; }
.drop:hover, .drop.over { border-color: var(--ink); background: var(--tint-2); }
.drop:focus-within { outline: 1px solid var(--dot); outline-offset: 3px; }
.thumbs { display: flex; flex-wrap: wrap; gap: 12px; list-style: none; padding: 0; margin: 0 0 12px; }
.thumbs li { position: relative; width: 120px; height: 90px; border: 1px solid var(--hair); background: var(--tint); }
.thumbs img { display: block; width: 100%; height: 100%; object-fit: cover; }
.thumbs button { position: absolute; top: -1px; right: -1px; width: 26px; height: 26px; padding: 0; border: 1px solid var(--ink); background: var(--paper); color: var(--ink); font: 600 16px/1 var(--font-ui); cursor: pointer; }
.thumbs button:hover { background: var(--ink); color: var(--paper); }
.hp { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }
.send { display: flex; gap: 12px 20px; align-items: center; flex-wrap: wrap; }
.send .btn { cursor: pointer; font-family: var(--font-ui); }
.send .btn:disabled { opacity: .5; cursor: default; }
.contact-status { margin: 0; font-size: 14.5px; color: var(--ink-soft); }
.contact-status[data-kind="ok"] { color: var(--ink); }
.contact-status[data-kind="error"] { color: var(--dot); }

/* copy buttons, added by site.js next to each command (D-088) */
.cmd-wrap { display: flex; align-items: stretch; }
.cmd-wrap .cmd { flex: 1; min-width: 0; }
.hero .cmd-wrap { margin-top: 26px; }
.hero .cmd-wrap .cmd { margin-top: 0; }
.copy { margin-left: -1px; padding: 0 14px; border: 1px solid var(--ink); background: var(--paper); color: var(--ink); font: 600 12.5px/1.5 var(--font-ui); cursor: pointer; }
.copy:hover { background: var(--ink); color: var(--paper); }
.copy:focus-visible { outline: 1px solid var(--dot); outline-offset: 2px; }

/* coming soon: a dashed tag and a muted row */
.tag.soon, .soon { border-style: dashed; color: var(--ink-soft); }
h3 .tag { margin: 0 0 0 10px; vertical-align: 3px; letter-spacing: .06em; }
.pack.later h3 { color: var(--ink-soft); }
.locales { display: flex; flex-wrap: wrap; gap: 8px 10px; list-style: none; padding: 0; margin: 28px 0 0; align-items: center; }
.locales li { padding: 4px 10px; border: 1px solid var(--ink); font-size: 14.5px; }
.locales li.soon { border-style: dashed; }
.locales .lbl { padding: 0; border: 0; margin-right: 6px; font: 600 12px/1.3 var(--font-ui); letter-spacing: .07em; text-transform: uppercase; color: var(--ink-soft); }

/* interest forms: Challenges waitlist and commercial licence (D-088) */
.interest-grid { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 28px 56px; }
.interest-grid > div { border-top: 1px solid var(--ink); padding-top: 16px; }
.interest-grid h3 { font-size: 22px; margin-bottom: 8px; }
.interest-grid > div > p { color: var(--ink-soft); font-size: 15.5px; }
form.interest { display: grid; gap: 14px; margin-top: 6px; }
.inline { display: flex; gap: 0; }
.inline .field { flex: 1; }
.inline .btn { margin-left: -1px; cursor: pointer; font-family: var(--font-ui); align-self: end; }
.btn:disabled { opacity: .5; cursor: default; }

/* privacy page */
.prose { max-width: 70ch; padding: 48px 0 64px; }
.prose h1 { font-size: 38px; line-height: 1.1; margin-bottom: 18px; }
.prose h2 { font-size: 21px; margin: 32px 0 8px; }
.prose p, .prose li { color: var(--ink-soft); }
.prose strong { color: var(--ink); }
footer a { color: var(--ink-soft); }
footer a:hover { color: var(--ink); }

footer { border-top: 1px solid var(--ink); padding: 24px 0 40px; font-size: 13.5px; color: var(--ink-soft); }
footer .wrap { display: flex; gap: 10px 28px; flex-wrap: wrap; justify-content: space-between; }

/* ---- narrow screens ---- */
@media (max-width: 960px) {
  .hero, .sec-head, .start, .contact, .interest-grid { grid-template-columns: minmax(0, 1fr); }
  .traits, .steps { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .pack { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .pack > :first-child { grid-column: 1 / -1; }
  .shots { grid-template-columns: minmax(0, 1fr); }
  .shots figure:last-child img { max-width: 420px; }
}
@media (max-width: 620px) {
  .wrap { padding: 0 16px; }
  .top nav { display: none; }
  .top .lang { margin-left: auto; }
  .hero { padding: 40px 0; }
  .hero h1 { font-size: 34px; }
  .hero .lede { font-size: 17px; }
  .sec { padding: 44px 0; }
  .sec-head h2 { font-size: 27px; }
  .traits, .steps, .dests, .faq, .pack, .row { grid-template-columns: minmax(0, 1fr); }
  .contact-head h2 { font-size: 27px; }
  .prose h1 { font-size: 30px; }
}