/* ZeroTrace site. Same palette and type as me.skysec.org; fonts are bundled
   (IBM Plex, SIL OFL) so the page doesn't load anything from other domains. */

@font-face {
  font-family: "IBM Plex Sans";
  src: url("fonts/IBMPlexSans-var.woff2") format("woff2");
  font-weight: 400 700;
  font-display: swap;
}
@font-face {
  font-family: "IBM Plex Mono";
  src: url("fonts/IBMPlexMono-400.woff2") format("woff2");
  font-weight: 400;
  font-display: swap;
}
@font-face {
  font-family: "IBM Plex Mono";
  src: url("fonts/IBMPlexMono-500.woff2") format("woff2");
  font-weight: 500;
  font-display: swap;
}

:root {
  --ink: #0f2a3d;
  --muted: #54697b;
  --sky: #2f9fe0;
  --sky-deep: #0c6fae;
  --mist: #f1f8fd;
  --haze: #e1f1fb;
  --edge: #bfe2f7;
  --line: #dcebf5;
  --white: #fff;
  --warn: #9a6200;
  --warn-bg: #fdf4e3;
  --bad: #b42318;
  --bad-bg: #fdeceb;
  --ok: #0f7a55;
  --ok-bg: #e6f6ef;
  --sans: "IBM Plex Sans", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --mono: "IBM Plex Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  color-scheme: light;
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--white);
  color: var(--ink);
  font: 16px/1.7 var(--sans);
}

a { color: var(--sky-deep); text-underline-offset: 2px; }
code, .mono { font-family: var(--mono); font-size: 0.9em; }

.wrap { max-width: 1040px; margin: 0 auto; padding: 0 24px; }

/* header */
.top {
  position: sticky;
  top: 0;
  z-index: 10;
  background: #ffffffe6;
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--line);
}
.top .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  height: 64px;
}
.brand { font-weight: 700; color: var(--ink); text-decoration: none; letter-spacing: 0.01em; }
.top nav { display: flex; gap: 28px; }
.top nav a { color: var(--muted); text-decoration: none; font-size: 15px; white-space: nowrap; }
.top nav a:hover, .top nav a[aria-current="page"] { color: var(--ink); }

/* buttons */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 9px 18px;
  border-radius: 0.375rem;
  border: 1px solid var(--sky-deep);
  color: var(--sky-deep);
  background: var(--white);
  font-weight: 600;
  font-size: 15px;
  text-decoration: none;
  transition: background 0.15s, border-color 0.15s;
}
.btn:hover { background: var(--mist); }
.btn.primary { background: var(--sky); border-color: var(--sky); color: var(--white); }
.btn.primary:hover { background: var(--sky-deep); border-color: var(--sky-deep); }
.btn svg { width: 16px; height: 16px; }

/* hero */
.hero {
  background: linear-gradient(to bottom, var(--mist), var(--white));
  border-bottom: 1px solid var(--line);
  padding: 72px 0 64px;
}
.hero .wrap { display: grid; grid-template-columns: 1.35fr 1fr; gap: 48px; align-items: start; }
.hero h1 {
  font-size: clamp(34px, 5vw, 52px);
  line-height: 1.12;
  letter-spacing: -0.025em;
  margin: 0 0 10px;
}
.hero .tagline { color: var(--sky-deep); font-size: 21px; font-weight: 500; margin: 0 0 22px; }
.hero p.lede { margin: 0 0 28px; max-width: 560px; }
.actions { display: flex; flex-wrap: wrap; gap: 12px; align-items: center; }

/* cards, labels, pills */
.card {
  background: var(--white);
  border: 1px solid var(--edge);
  border-radius: 0.75rem;
  padding: 26px 28px;
  box-shadow: 0 10px 30px -18px #0c6fae66;
}
.label {
  display: block;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 4px;
}
.card .label:not(:first-child) { margin-top: 18px; }
.card p { margin: 0; }
.pills { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 8px; }
.pill {
  display: inline-block;
  padding: 3px 12px;
  border: 1px solid var(--edge);
  border-radius: 999px;
  font-size: 14px;
  color: var(--ink);
  background: var(--white);
}
.pill.warn { border-color: #efd9a6; background: var(--warn-bg); color: var(--warn); }

/* sections */
section { padding: 72px 0; border-bottom: 1px solid var(--line); }
section:last-of-type { border-bottom: 0; }
.heading { display: flex; align-items: center; gap: 18px; margin: 0 0 30px; }
.heading h2 { margin: 0; font-size: 28px; letter-spacing: -0.01em; white-space: nowrap; }
.heading::after {
  content: "";
  flex: 1;
  height: 1px;
  background: linear-gradient(to right, var(--edge), transparent);
}
section p { max-width: 720px; }

.stats { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; margin-bottom: 26px; }
.stat { background: var(--mist); border-radius: 0.5rem; padding: 14px 16px; }
.stat b { display: block; font-size: 28px; line-height: 1.2; color: var(--sky-deep); }
.stat span { font-size: 13px; color: var(--muted); line-height: 1.35; display: block; }

.steps { display: grid; grid-template-columns: repeat(2, 1fr); gap: 18px; }
.steps .card h3 { margin: 0 0 6px; font-size: 18px; }
.steps .card .label { margin-bottom: 8px; }

.grid2 { display: grid; grid-template-columns: 1fr 1fr; gap: 22px; }
figure { margin: 0; }
.shot {
  width: 100%;
  height: auto;
  display: block;
  border-radius: 0.5rem;
  border: 1px solid var(--edge);
  background: #000;
}
figcaption { color: var(--muted); font-size: 14px; margin-top: 10px; }

.status { list-style: none; padding: 0; margin: 0; display: grid; gap: 10px; }
.status li { display: flex; gap: 12px; align-items: baseline; }
.status .tag {
  flex: none;
  min-width: 84px;
  text-align: center;
  font-family: var(--mono);
  font-size: 12px;
  border-radius: 999px;
  padding: 1px 10px;
}
.tag.done { background: var(--ok-bg); color: var(--ok); }
.tag.untested { background: var(--warn-bg); color: var(--warn); }
.tag.planned { background: var(--haze); color: var(--sky-deep); }

.checksum {
  display: block;
  font-family: var(--mono);
  font-size: 13.5px;
  background: var(--mist);
  border: 1px solid var(--line);
  border-radius: 0.5rem;
  padding: 10px 14px;
  overflow-wrap: anywhere;
  margin: 8px 0 18px;
}
.muted { color: var(--muted); }
.small { font-size: 14px; }

/* verifier */
.drop {
  border: 2px dashed var(--edge);
  border-radius: 0.75rem;
  padding: 34px 16px;
  text-align: center;
  cursor: pointer;
  color: var(--muted);
  background: var(--mist);
  transition: border-color 0.15s, background 0.15s;
}
.drop:hover, .drop:focus, .drop.over { border-color: var(--sky); background: var(--haze); outline: none; color: var(--ink); }
.drop strong { color: var(--sky-deep); }
textarea {
  width: 100%;
  min-height: 100px;
  margin-top: 8px;
  padding: 10px 12px;
  font: 13px/1.45 var(--mono);
  color: var(--ink);
  border: 1px solid var(--edge);
  border-radius: 0.5rem;
  resize: vertical;
}
textarea:focus { outline: 2px solid var(--haze); border-color: var(--sky); }
.stack { display: grid; gap: 18px; }
.verdict { border-radius: 0.5rem; padding: 12px 16px; font-weight: 600; margin-bottom: 18px; }
.verdict small { display: block; font-weight: 400; margin-top: 2px; }
.verdict.ok { background: var(--ok-bg); color: var(--ok); }
.verdict.warn { background: var(--warn-bg); color: var(--warn); }
.verdict.bad { background: var(--bad-bg); color: var(--bad); }
dl.facts { display: grid; grid-template-columns: max-content 1fr; gap: 6px 22px; margin: 0; }
dl.facts dt { font-family: var(--mono); font-size: 13px; color: var(--muted); padding-top: 2px; }
dl.facts dd { margin: 0; overflow-wrap: anywhere; }

/* footer */
footer { border-top: 1px solid var(--line); padding: 28px 0 40px; color: var(--muted); font-size: 14px; }
footer .wrap { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 12px; }
footer a { color: var(--muted); }

@media (max-width: 820px) {
  .hero .wrap, .grid2, .steps { grid-template-columns: 1fr; }
  .hero { padding: 44px 0 40px; }
  section { padding: 52px 0; }
  .stats { grid-template-columns: 1fr; }
  .top nav { gap: 16px; }
  .heading h2 { font-size: 24px; white-space: normal; }
  dl.facts { grid-template-columns: 1fr; }
  dl.facts dt { margin-top: 8px; }
}

/* Phones: the hero has its own download button, so drop the one in the header. */
@media (max-width: 640px) {
  .top .btn { display: none; }
  .top nav { gap: 14px; }
  .top nav a { font-size: 14px; }
}