/* free.lotkow.ski — take-home materials from talks. Palette and faces are the
   main site's, copied verbatim from ../../public/styles.css (via the card). */

:root {
  color-scheme: light;

  --wall: #E9CDC2;
  --paper: #F9F2EF;
  --tint: #F2E6E1;
  --deep: #1E1615;
  --ink: #231A19;
  --ink-soft: #5C4B47;
  --ink-mid: #4A3B38;
  --rule: #E2D0C9;
  --rule-strong: #CDB4AB;
  --oxblood: #6B2329;
  --oxblood-deep: #57181D;

  --display: 'Bona Nova', Georgia, serif;
  --smallcap: 'Bona Nova SC', 'Bona Nova', Georgia, serif;
  --sans: 'Hanken Grotesk', system-ui, -apple-system, 'Segoe UI', sans-serif;
  --mono: ui-monospace, 'SF Mono', Menlo, Consolas, monospace;
}

*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  padding: clamp(16px, 4vw, 48px) 16px;
  font-family: var(--sans);
  font-size: 1.0625rem;
  line-height: 1.6;
  color: var(--ink);
  background-color: var(--wall);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

::selection {
  background: var(--oxblood);
  color: var(--paper);
}

:focus-visible {
  outline: 2px solid var(--oxblood);
  outline-offset: 3px;
}

a {
  color: var(--oxblood);
  text-decoration-thickness: 1px;
  text-underline-offset: 0.22em;
}

a:hover { color: var(--oxblood-deep); }

/* ===== Sheet ===== */
.sheet {
  width: 100%;
  max-width: 780px;
  margin: 0 auto;
  padding: clamp(24px, 6vw, 56px) clamp(18px, 5vw, 56px);
  background-color: var(--paper);
  border: 1px solid var(--rule-strong);
}

.eyebrow {
  font-family: var(--smallcap);
  font-size: 0.9375rem;
  letter-spacing: 0.06em;
  color: var(--ink-mid);
}

h1 {
  margin-top: 0.5rem;
  font-family: var(--display);
  font-size: clamp(2rem, 1.5rem + 2.4vw, 2.875rem);
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -0.01em;
}

/* The main site's one governed rule: a short oxblood hairline. */
.lead {
  position: relative;
  margin-top: 1.25rem;
  padding-top: 1.25rem;
  font-size: 1.1875rem;
  color: var(--ink-mid);
}

.lead::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 48px;
  height: 1px;
  background-color: var(--oxblood);
}

p + p { margin-top: 0.75rem; }

.rule-box {
  margin-top: 1.5rem;
  padding: 0.875rem 1rem;
  background-color: var(--tint);
  border-left: 2px solid var(--oxblood);
  font-size: 1rem;
}

.chain {
  margin-top: 1.5rem;
  list-style: none;
  counter-reset: none;
  display: grid;
  gap: 0.375rem;
}

.chain li { color: var(--ink-mid); }
.chain b { color: var(--ink); }

/* ===== Steps ===== */
.step {
  margin-top: clamp(2.5rem, 6vw, 3.5rem);
  padding-top: clamp(1.5rem, 4vw, 2rem);
  border-top: 1px solid var(--rule-strong);
}

.step__label {
  font-family: var(--smallcap);
  font-size: 0.9375rem;
  letter-spacing: 0.08em;
  color: var(--oxblood);
}

h2 {
  margin-top: 0.25rem;
  font-family: var(--display);
  font-size: clamp(1.625rem, 1.3rem + 1.4vw, 2.125rem);
  font-weight: 700;
  line-height: 1.15;
}

h3 {
  margin-top: 1.75rem;
  font-family: var(--display);
  font-size: 1.3125rem;
  font-weight: 700;
  line-height: 1.25;
}

.step > p, .step > ul, .step > ol { margin-top: 0.75rem; }

.step ul, .step ol { padding-left: 1.25rem; }
.step li + li { margin-top: 0.25rem; }

.meta {
  margin-top: 0.375rem;
  font-size: 0.9375rem;
  font-style: italic;
  color: var(--ink-soft);
}

/* ===== Tables ===== */
.table-wrap {
  margin-top: 1rem;
  overflow-x: auto;
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9375rem;
  line-height: 1.4;
}

th, td {
  padding: 0.5rem 0.5rem;
  border-bottom: 1px solid var(--rule);
  text-align: left;
  vertical-align: top;
}

th {
  font-weight: 600;
  color: var(--ink-mid);
  border-bottom-color: var(--rule-strong);
}

td.num, th.num { width: 2rem; color: var(--ink-soft); }
td.box, th.box { width: 3.75rem; text-align: center; }
td.who, th.who { width: 22%; }

/* ===== Prompt blocks ===== */
.prompt {
  margin-top: 1.25rem;
  border: 1px solid var(--rule-strong);
  background-color: #FFFBF9;
}

.prompt__bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.5rem 0.5rem 0.5rem 1rem;
  border-bottom: 1px solid var(--rule);
  background-color: var(--tint);
}

.prompt__name {
  font-family: var(--smallcap);
  font-size: 0.9375rem;
  letter-spacing: 0.05em;
  color: var(--ink-mid);
}

.prompt pre {
  max-height: 22rem;
  overflow: auto;
  padding: 1rem;
  font-family: var(--mono);
  font-size: 0.8125rem;
  line-height: 1.55;
  white-space: pre-wrap;
  overflow-wrap: anywhere;
  color: var(--ink);
}

/* ===== Buttons ===== */
.btn {
  display: inline-block;
  padding: 0.625rem 1.125rem;
  border: 0;
  border-radius: 0;
  background-color: var(--oxblood);
  color: var(--paper);
  font: 600 0.9375rem/1.2 var(--sans);
  text-decoration: none;
  cursor: pointer;
  transition: background-color 120ms ease;
}

.btn:hover {
  background-color: var(--oxblood-deep);
  color: var(--paper);
}

.btn--big {
  margin-top: 1.25rem;
  padding: 1rem 1.75rem;
  font-size: 1rem;
}

/* ===== Footer ===== */
.contact {
  margin-top: clamp(2.5rem, 6vw, 3.5rem);
  padding: clamp(1.25rem, 4vw, 2rem);
  background-color: var(--tint);
  border: 1px solid var(--rule-strong);
}

.contact h2 { margin-top: 0; }

.contact__links {
  margin-top: 1rem;
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1.5rem;
}

.footnote {
  margin-top: 1.5rem;
  font-size: 0.875rem;
  color: var(--ink-soft);
}

.foot {
  max-width: 780px;
  margin: 1rem auto 0;
  font-size: 0.875rem;
  color: var(--ink-mid);
  text-align: center;
}

/* ===== Index list ===== */
.talks {
  margin-top: 2rem;
  list-style: none;
  border-top: 1px solid var(--rule);
}

.talks li { border-bottom: 1px solid var(--rule); }

.talks a {
  display: block;
  padding: 1rem 0.5rem;
  margin-inline: -0.5rem;
  color: var(--ink);
  text-decoration: none;
}

.talks a:hover { background-color: var(--tint); }
.talks strong { display: block; font-family: var(--display); font-size: 1.25rem; }
.talks span { color: var(--ink-soft); font-size: 0.9375rem; }

/* Phones: the three tick columns shrink so the question keeps the width. */
@media (max-width: 520px) {
  table { font-size: 0.875rem; }
  th, td { padding: 0.4rem 0.25rem; }
  td.box, th.box { width: 2.5rem; }
  th.box { font-size: 0.75rem; }
  td.num, th.num { width: 1.5rem; }
  td.who, th.who { width: 18%; }
}

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