/* shaleit.tech: one stylesheet for the landing page and every tool.
   Shale is layered rock, so pages are stacks of horizontal strata that darken with depth.
   The single accent is the pyrite seam (--seam). */
:root {
  --fissile: #c7cbc6;   /* top layer, page ground */
  --silt:    #9aa09b;
  --mudrock: #6c736e;
  --deep:    #3e4541;
  --bedrock: #232825;
  --seam:    #c49a2c;
  --ink:     #1d2220;
  --ink-pale:#eef0ec;
  --paper:   #f3f4f1;   /* inputs and result wells */
  --danger:  #8a2d1f;
  --ok:      #2f5a32;
  --radius:  6px;
}
* { box-sizing: border-box; }
html { background: var(--bedrock); }
body {
  margin: 0;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  font-family: "Familjen Grotesk", "Helvetica Neue", Arial, sans-serif;
  font-size: 1.125rem;
  line-height: 1.5;
  color: var(--ink);
  background: var(--fissile);
}
a { color: inherit; text-decoration-thickness: 1px; text-underline-offset: 0.18em; }
a:hover { text-decoration-thickness: 2px; }
:focus-visible { outline: 3px solid var(--seam); outline-offset: 3px; }
.layer { padding: 0 clamp(16px, 6vw, 88px); }
.inner { max-width: 68rem; }
.seam { height: 4px; background: var(--seam); }

/* ---------- Landing ---------- */
.top { padding-top: clamp(48px, 10vh, 120px); padding-bottom: clamp(32px, 6vh, 64px); }
.wordmark {
  margin: 0;
  font-weight: 700;
  font-size: clamp(3.25rem, 13vw, 10rem);
  line-height: 0.86;
  letter-spacing: -0.045em;
}
.wordmark span { display: block; }
.wordmark .tld { color: var(--mudrock); }
.lede { margin: 1.5rem 0 0; max-width: 34rem; font-size: clamp(1.125rem, 2.2vw, 1.375rem); }

.group-head { padding-top: 2.5rem; padding-bottom: 0.75rem; }
.group-head h2 { margin: 0; font-size: 1.25rem; font-weight: 500; }
.group-head p { margin: 0.25rem 0 0; max-width: 40rem; font-size: 1rem; }

.tool { padding-top: 1.5rem; padding-bottom: 1.5rem; }
.tool .inner {
  display: grid;
  grid-template-columns: minmax(10rem, 16rem) 1fr;
  gap: 0.4rem 2.5rem;
  align-items: baseline;
}
.tool h3 { margin: 0; font-size: 1.75rem; font-weight: 700; letter-spacing: -0.02em; line-height: 1.1; }
.tool h3 a { text-decoration: none; }
.tool h3 a:hover { text-decoration: underline; }
.tool p { margin: 0; max-width: 36rem; }
.tool .where { grid-column: 2; font-size: 0.95rem; }
.licence {
  display: inline-block;
  padding: 0.05rem 0.5rem;
  border: 1.5px solid currentColor;
  border-radius: 999px;
  font-size: 0.85rem;
  font-weight: 500;
  margin-right: 0.5rem;
}

.open  { background: var(--fissile); }
.open .tool { border-top: 1px solid var(--silt); }
.private-head { background: var(--silt); }
.s1 { background: var(--silt); }
.s2 { background: var(--mudrock); color: var(--ink-pale); }
.s3 { background: var(--deep); color: var(--ink-pale); }

.base {
  flex: 1;
  background: var(--bedrock);
  color: var(--ink-pale);
  padding-top: 2.5rem;
  padding-bottom: 3rem;
  font-size: 1rem;
}
.base p { margin: 0 0 0.75rem; max-width: 42rem; }

/* ---------- Tool pages ---------- */
.tool-top { padding-top: 1.25rem; padding-bottom: 2rem; }
.home { font-weight: 700; letter-spacing: -0.02em; text-decoration: none; }
.home:hover { text-decoration: underline; }
.tool-top h1 {
  margin: 1.75rem 0 0;
  font-size: clamp(2.5rem, 8vw, 5rem);
  font-weight: 700;
  line-height: 0.95;
  letter-spacing: -0.04em;
}
.tool-top .lede { margin-top: 0.75rem; }

.work { background: var(--silt); padding-top: 2rem; padding-bottom: 2.5rem; flex: 1; }
.work .inner { max-width: 44rem; }

label, .label { display: block; font-weight: 500; margin: 0 0 0.4rem; }
.hint { display: block; font-size: 0.95rem; margin: -0.2rem 0 0.5rem; }
.field { margin-bottom: 1.5rem; }
input[type="text"], input[type="url"], input[type="number"], textarea, select {
  width: 100%;
  font: inherit;
  color: var(--ink);
  background: var(--paper);
  border: 2px solid var(--deep);
  border-radius: var(--radius);
  padding: 0.75rem 0.9rem;
  min-height: 3.25rem;
}
textarea { min-height: 7rem; resize: vertical; }
input[type="color"] {
  width: 3.25rem; height: 3.25rem; padding: 0.2rem;
  border: 2px solid var(--deep); border-radius: var(--radius); background: var(--paper);
}
input[type="range"] { width: 100%; accent-color: var(--deep); min-height: 2.75rem; }
input[type="checkbox"], input[type="radio"] { width: 1.4rem; height: 1.4rem; accent-color: var(--deep); vertical-align: -0.25rem; margin-right: 0.5rem; }
.check { display: flex; align-items: center; min-height: 2.75rem; font-weight: 400; margin: 0; }

.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 0.5rem;
  font: inherit; font-weight: 700;
  min-height: 3.25rem; padding: 0.7rem 1.5rem;
  border-radius: var(--radius);
  border: 2px solid var(--bedrock);
  background: var(--bedrock); color: var(--ink-pale);
  cursor: pointer; text-decoration: none;
}
.btn:hover { background: var(--deep); border-color: var(--deep); }
.btn.quiet { background: transparent; color: var(--ink); }
.btn.quiet:hover { background: var(--fissile); }
.btn[disabled] { opacity: 0.45; cursor: not-allowed; }
.row { display: flex; flex-wrap: wrap; gap: 0.75rem; align-items: center; }

.result {
  background: var(--paper);
  border-radius: var(--radius);
  padding: 1.25rem;
  margin: 0 0 1.5rem;
}
.status { min-height: 1.5em; margin: 0.75rem 0 0; font-weight: 500; }
.status.err { color: var(--danger); }
.status.ok { color: var(--ok); }

details.more { margin-top: 1.5rem; }
details.more summary { cursor: pointer; font-weight: 500; min-height: 2.75rem; display: flex; align-items: center; }

.credit { background: var(--deep); color: var(--ink-pale); padding-top: 1.5rem; padding-bottom: 1.5rem; font-size: 0.95rem; }
.credit p { margin: 0 0 0.4rem; max-width: 44rem; }

@media (max-width: 640px) {
  .tool .inner { grid-template-columns: 1fr; }
  .tool .where { grid-column: 1; }
  .btn { width: 100%; }
}
@media (prefers-reduced-motion: reduce) { * { transition: none !important; animation: none !important; } }

/* Text links in footers and the home link: inline padding grows the tap target to 44px without moving the text */
.home, .base a, .credit a, .group-head a { padding: 0.7rem 0; }

/* Answers section under each tool: quiet, same strata look */
.answers { margin-top: 3rem; padding-top: 2rem; border-top: 4px solid var(--seam); }
.answers h2 { margin: 0 0 0.75rem; font-size: 1.5rem; font-weight: 700; letter-spacing: -0.02em; line-height: 1.15; }
.answers h3 { margin: 1.5rem 0 0.35rem; font-size: 1.15rem; font-weight: 700; line-height: 1.25; }
.answers p { margin: 0 0 0.5rem; max-width: 40rem; }
.answers ol { margin: 0 0 2rem; padding-left: 1.5rem; max-width: 40rem; }
.answers li { margin: 0 0 0.4rem; padding-left: 0.25rem; }
.answers .faq-h { margin-top: 2.25rem; }