/* Olingo Medical — landing pages.
   Design intent: clinical instrument, not SaaS brochure. One message per page.
   Monospace micro-labels + hairline rules read as engineering credibility;
   the only decoration is typographic. */

:root {
  --accent: #0e7c66;
  --accent-ink: #ffffff;

  --bg: #fbfaf8;
  --surface: #ffffff;
  --ink: #14171a;
  --ink-2: #4a5259;
  --ink-3: #79838b;
  --rule: #e3e0da;

  --mono: ui-monospace, "SF Mono", "JetBrains Mono", Menlo, Consolas, monospace;
  --sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
          "Helvetica Neue", Arial, sans-serif;

  --measure: 34rem;
  --pad: clamp(1.25rem, 5vw, 2.5rem);
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0e1113;
    --surface: #161a1d;
    --ink: #eef1f2;
    --ink-2: #adb6bc;
    --ink-3: #7d878e;
    --rule: #272d31;
  }
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 17px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

.wrap {
  max-width: 58rem;
  margin: 0 auto;
  padding: 0 var(--pad);
}

/* ---------- header ---------- */

.top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1.5rem 0 0;
}

.brand {
  font-family: var(--mono);
  font-size: 0.85rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink);
  text-decoration: none;
  font-weight: 600;
}

.brand span { color: var(--accent); }

.lang {
  font-family: var(--mono);
  font-size: 0.75rem;
  letter-spacing: 0.06em;
  color: var(--ink-3);
}

.lang a { color: var(--ink-3); text-decoration: none; }
.lang a:hover, .lang a[aria-current="true"] { color: var(--accent); }

/* ---------- hero ---------- */

.hero { padding: clamp(3rem, 9vw, 6rem) 0 clamp(2rem, 5vw, 3.5rem); }

.eyebrow {
  font-family: var(--mono);
  font-size: 0.75rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent);
  margin: 0 0 1.25rem;
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.eyebrow::after {
  content: "";
  flex: 1;
  height: 1px;
  background: var(--rule);
}

h1 {
  font-size: clamp(2.2rem, 6.2vw, 3.6rem);
  line-height: 1.06;
  letter-spacing: -0.028em;
  font-weight: 660;
  margin: 0 0 1.25rem;
  max-width: 20ch;
  text-wrap: balance;
}

.sub {
  font-size: clamp(1.06rem, 2.4vw, 1.25rem);
  color: var(--ink-2);
  max-width: var(--measure);
  margin: 0 0 2.25rem;
  text-wrap: pretty;
}

.sub strong { color: var(--ink); font-weight: 600; }

/* ---------- spec strip: the credibility device ---------- */

.spec {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(9.5rem, 1fr));
  gap: 1px;
  background: var(--rule);
  border: 1px solid var(--rule);
  margin: 2.5rem 0;
}

.spec div { background: var(--bg); padding: 1.1rem 1.15rem; }

.spec dt {
  font-family: var(--mono);
  font-size: 0.68rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-3);
  margin: 0 0 0.4rem;
}

.spec dd {
  margin: 0;
  font-size: 1.32rem;
  font-weight: 640;
  letter-spacing: -0.015em;
  font-variant-numeric: tabular-nums;
}

.spec dd small {
  display: block;
  font-size: 0.78rem;
  font-weight: 400;
  color: var(--ink-3);
  letter-spacing: 0;
  margin-top: 0.15rem;
}

/* ---------- form ---------- */

.cta {
  background: var(--surface);
  border: 1px solid var(--rule);
  padding: clamp(1.35rem, 4vw, 2rem);
  max-width: 30rem;
}

.cta h2 {
  font-size: 1.12rem;
  margin: 0 0 0.4rem;
  letter-spacing: -0.01em;
}

.cta p.hint {
  margin: 0 0 1.25rem;
  font-size: 0.9rem;
  color: var(--ink-3);
}

.field { margin-bottom: 0.7rem; }

label {
  display: block;
  font-family: var(--mono);
  font-size: 0.68rem;
  letter-spacing: 0.09em;
  text-transform: uppercase;
  color: var(--ink-3);
  margin-bottom: 0.32rem;
}

input, textarea, select {
  width: 100%;
  font: inherit;
  font-size: 0.97rem;
  padding: 0.62rem 0.7rem;
  color: var(--ink);
  background: var(--bg);
  border: 1px solid var(--rule);
  border-radius: 2px;
}

input:focus, textarea:focus, select:focus {
  outline: 2px solid var(--accent);
  outline-offset: -1px;
  border-color: var(--accent);
}

textarea { min-height: 4.5rem; resize: vertical; }

.hp {
  position: absolute;
  left: -9999px;
  width: 1px;
  height: 1px;
  overflow: hidden;
}

button {
  width: 100%;
  font: inherit;
  font-weight: 620;
  font-size: 1rem;
  padding: 0.82rem 1rem;
  margin-top: 0.55rem;
  color: var(--accent-ink);
  background: var(--accent);
  border: 0;
  border-radius: 2px;
  cursor: pointer;
  letter-spacing: -0.005em;
}

button:hover { filter: brightness(1.08); }
button:disabled { opacity: 0.5; cursor: progress; }

.legal {
  font-size: 0.76rem;
  color: var(--ink-3);
  margin: 0.9rem 0 0;
  line-height: 1.5;
}

.legal a { color: var(--ink-3); }

.ok, .err {
  padding: 0.8rem 0.9rem;
  border-left: 3px solid var(--accent);
  background: var(--bg);
  font-size: 0.94rem;
  margin-top: 0.9rem;
}

.err { border-left-color: #c2410c; }

[hidden] { display: none !important; }

/* ---------- content blocks ---------- */

section { padding: clamp(2.5rem, 6vw, 4rem) 0; border-top: 1px solid var(--rule); }

h2.sec {
  font-size: clamp(1.4rem, 3.4vw, 1.85rem);
  letter-spacing: -0.02em;
  margin: 0 0 1.5rem;
  max-width: 24ch;
  text-wrap: balance;
}

.cols {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(15rem, 1fr));
  gap: clamp(1.5rem, 4vw, 2.5rem);
}

.cols h3 {
  font-size: 1rem;
  margin: 0 0 0.45rem;
  letter-spacing: -0.005em;
}

.cols p { margin: 0; color: var(--ink-2); font-size: 0.96rem; }

.num {
  font-family: var(--mono);
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  color: var(--accent);
  display: block;
  margin-bottom: 0.55rem;
}

/* before / after */

.ba {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1px;
  background: var(--rule);
  border: 1px solid var(--rule);
}

@media (max-width: 40rem) { .ba { grid-template-columns: 1fr; } }

.ba > div { background: var(--surface); padding: 1.25rem; }

.ba .tag {
  font-family: var(--mono);
  font-size: 0.68rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-3);
  margin: 0 0 0.7rem;
}

.ba .after .tag { color: var(--accent); }

.ba pre {
  font-family: var(--mono);
  font-size: 0.78rem;
  line-height: 1.55;
  white-space: pre-wrap;
  margin: 0;
  color: var(--ink-2);
  overflow-x: auto;
}

.ba .after pre { color: var(--ink); }

/* faq */

details {
  border-top: 1px solid var(--rule);
  padding: 0.95rem 0;
}

details:last-of-type { border-bottom: 1px solid var(--rule); }

summary {
  cursor: pointer;
  font-weight: 600;
  font-size: 0.99rem;
  list-style: none;
  display: flex;
  justify-content: space-between;
  gap: 1rem;
}

summary::-webkit-details-marker { display: none; }
summary::after { content: "+"; color: var(--accent); font-family: var(--mono); }
details[open] summary::after { content: "−"; }
details p { margin: 0.7rem 0 0; color: var(--ink-2); font-size: 0.95rem; max-width: var(--measure); }

/* ---------- footer ---------- */

footer {
  border-top: 1px solid var(--rule);
  padding: 2rem 0 3rem;
  font-size: 0.82rem;
  color: var(--ink-3);
}

footer a { color: var(--ink-3); }
footer nav { margin-bottom: 0.65rem; display: flex; gap: 1.15rem; flex-wrap: wrap; }

/* ---------- legal pages ---------- */

.doc { padding: 3rem 0; max-width: 44rem; }
.doc h1 { font-size: clamp(1.7rem, 4vw, 2.2rem); max-width: none; }
.doc h2 { font-size: 1.12rem; margin: 2rem 0 0.5rem; }
.doc p, .doc li { color: var(--ink-2); font-size: 0.95rem; }

@media (prefers-reduced-motion: reduce) {
  * { animation: none !important; transition: none !important; }
}