/* ============================================================
   AI Starter Lab — Phase 1 landing page styles
   Aesthetic: warm "field notes / workbench" editorial.
   No JS, no framework. Fonts loaded from Google Fonts.
   ============================================================ */

:root {
  --paper: #fbf6ec;
  --paper-deep: #f3ecdc;
  --ink: #22312a;
  --ink-soft: #4c5c53;
  --accent: #d95d0e;
  --accent-deep: #a84406;
  --moss: #40604e;
  --line: rgba(34, 49, 42, 0.22);
  --line-strong: rgba(34, 49, 42, 0.45);

  --font-display: "Fraunces", "Georgia", serif;
  --font-body: "Work Sans", "Helvetica Neue", sans-serif;

  --measure: 62ch;
  --pad: clamp(1.25rem, 4vw, 3rem);
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation: none !important; transition: none !important; }
}

body {
  margin: 0;
  background-color: var(--paper);
  /* Faint worksheet grid, like graph paper on a workbench */
  background-image:
    linear-gradient(rgba(34, 49, 42, 0.045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(34, 49, 42, 0.045) 1px, transparent 1px);
  background-size: 32px 32px;
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 1.0625rem;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

/* ---------- Accessibility helpers ---------- */

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  background: var(--ink);
  color: var(--paper);
  padding: 0.75rem 1.25rem;
  z-index: 100;
  font-weight: 600;
}
.skip-link:focus {
  left: 0.5rem;
  top: 0.5rem;
}

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

/* ---------- Typography ---------- */

h1, h2, h3 {
  font-family: var(--font-display);
  font-weight: 600;
  line-height: 1.08;
  margin: 0 0 0.6em;
  text-wrap: balance;
}

h1 {
  font-size: clamp(2.5rem, 7.5vw, 4.75rem);
  letter-spacing: -0.015em;
}

h2 { font-size: clamp(1.75rem, 4vw, 2.75rem); }
h3 { font-size: clamp(1.2rem, 2.5vw, 1.45rem); }

p { margin: 0 0 1em; max-width: var(--measure); }

a { color: var(--accent-deep); text-underline-offset: 3px; }
a:hover { color: var(--accent); }

.accent-word {
  font-style: italic;
  font-weight: 500;
  color: var(--accent);
}

/* Small-caps section labels, like stamped index tabs */
.kicker {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--moss);
  margin-bottom: 1.1rem;
}
.kicker::before {
  content: "";
  width: 2rem;
  height: 3px;
  background: var(--accent);
}

/* ---------- Layout primitives ---------- */

.wrap {
  max-width: 68rem;
  margin: 0 auto;
  padding-left: var(--pad);
  padding-right: var(--pad);
}

section { padding: clamp(3rem, 8vw, 5.5rem) 0; }

.rule { border-top: 1px dashed var(--line-strong); }

/* ---------- Header ---------- */

.site-header {
  border-bottom: 1px solid var(--line);
  background: var(--paper);
  position: sticky;
  top: 0;
  z-index: 50;
}

.site-header .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding-top: 0.9rem;
  padding-bottom: 0.9rem;
}

.wordmark {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.15rem;
  color: var(--ink);
  text-decoration: none;
  letter-spacing: -0.01em;
  white-space: nowrap;
}
.wordmark .dot { color: var(--accent); }

.site-nav {
  display: flex;
  align-items: center;
  gap: clamp(0.75rem, 2.5vw, 1.75rem);
  flex-wrap: wrap;
  justify-content: flex-end;
}

.site-nav a {
  color: var(--ink-soft);
  text-decoration: none;
  font-size: 0.92rem;
  font-weight: 500;
}
.site-nav a:hover { color: var(--accent-deep); text-decoration: underline; }

/* ---------- Buttons ---------- */

.btn {
  display: inline-block;
  font-family: var(--font-body);
  font-weight: 700;
  font-size: 1rem;
  text-decoration: none;
  text-align: center;
  padding: 0.85rem 1.6rem;
  border-radius: 4px;
  border: 2px solid var(--ink);
  transition: transform 120ms ease, box-shadow 120ms ease;
}

.btn-primary {
  background: var(--accent);
  border-color: var(--accent-deep);
  color: #fff;
  box-shadow: 4px 4px 0 var(--ink);
}
.btn-primary:hover {
  color: #fff;
  transform: translate(-2px, -2px);
  box-shadow: 6px 6px 0 var(--ink);
}

.btn-secondary {
  background: transparent;
  color: var(--ink);
}
.btn-secondary:hover { background: var(--paper-deep); color: var(--ink); }

.btn-small { font-size: 0.88rem; padding: 0.55rem 1.1rem; }

/* ---------- Hero ---------- */

.hero { padding-top: clamp(3.5rem, 9vw, 6.5rem); }

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.5fr) minmax(16rem, 1fr);
  gap: clamp(2rem, 5vw, 4rem);
  align-items: start;
}

.hero .lede {
  font-size: clamp(1.1rem, 2vw, 1.3rem);
  color: var(--ink-soft);
  max-width: 46ch;
}

.hero-ctas {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
  margin-top: 2rem;
}

.hero-note {
  margin-top: 1.1rem;
  font-size: 0.88rem;
  color: var(--ink-soft);
}

/* Ticket-stub card for the cohort */
.ticket {
  background: #fff;
  border: 2px solid var(--ink);
  border-radius: 6px;
  box-shadow: 6px 6px 0 rgba(34, 49, 42, 0.9);
  transform: rotate(1.2deg);
  overflow: hidden;
}

.ticket-header {
  background: var(--ink);
  color: var(--paper);
  padding: 0.7rem 1.25rem;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.2em;
  text-transform: uppercase;
}
.ticket-header span { color: var(--accent); }

.ticket-body { padding: 1.25rem; }

.ticket-body dl { margin: 0; }
.ticket-body dt {
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--moss);
  margin-top: 0.9rem;
}
.ticket-body dt:first-child { margin-top: 0; }
.ticket-body dd {
  margin: 0.1rem 0 0;
  font-family: var(--font-display);
  font-size: 1.05rem;
}

.ticket-tear {
  border-top: 2px dashed var(--line-strong);
  padding: 1rem 1.25rem 1.25rem;
}
.ticket-tear .btn { width: 100%; }

/* ---------- Audience cards ---------- */

.audience-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(14rem, 1fr));
  gap: 1.25rem;
  margin-top: 2rem;
}

.audience-card {
  background: #fff;
  border: 1px solid var(--line-strong);
  border-radius: 6px;
  padding: 1.4rem 1.4rem 1.2rem;
  position: relative;
}
.audience-card::before {
  content: "";
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 5px;
  background: var(--moss);
  border-radius: 6px 6px 0 0;
}
.audience-card:nth-child(even)::before { background: var(--accent); }

.audience-card h3 { margin-bottom: 0.35rem; }
.audience-card p { font-size: 0.95rem; color: var(--ink-soft); margin: 0; }

/* ---------- Outcomes: worksheet list ---------- */

.outcomes { background: var(--paper-deep); }

.outcome-list {
  list-style: none;
  margin: 2rem 0 0;
  padding: 0;
  counter-reset: outcome;
  border-top: 1px dashed var(--line-strong);
}

.outcome-list li {
  counter-increment: outcome;
  display: grid;
  grid-template-columns: 4.5rem minmax(0, 1fr);
  gap: 1.25rem;
  padding: 1.5rem 0;
  border-bottom: 1px dashed var(--line-strong);
  align-items: baseline;
}

.outcome-list li::before {
  content: "0" counter(outcome);
  font-family: var(--font-display);
  font-size: clamp(1.9rem, 4vw, 2.6rem);
  font-weight: 600;
  font-style: italic;
  color: var(--accent);
  line-height: 1;
}

.outcome-list h3 { margin-bottom: 0.3rem; }
.outcome-list p { margin: 0; color: var(--ink-soft); font-size: 0.98rem; }

/* ---------- Format strip ---------- */

.format-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(13rem, 1fr));
  gap: 0;
  border: 2px solid var(--ink);
  border-radius: 6px;
  overflow: hidden;
  margin-top: 2rem;
  background: var(--ink);
}

.format-cell {
  background: #fff;
  padding: 1.5rem 1.4rem;
  outline: 1px solid var(--ink);
}

.format-cell .label {
  display: block;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--moss);
  margin-bottom: 0.4rem;
}

.format-cell .value {
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 600;
}

/* ---------- Privacy callout ---------- */

.privacy-callout {
  border: 2px solid var(--accent-deep);
  border-left-width: 10px;
  border-radius: 6px;
  background: #fff;
  padding: 1.5rem clamp(1.25rem, 3vw, 2rem);
  margin-top: 2rem;
}
.privacy-callout h3 { color: var(--accent-deep); }
.privacy-callout ul { margin: 0.5rem 0 0.75rem; padding-left: 1.2rem; }
.privacy-callout li { margin-bottom: 0.3rem; }
.privacy-callout p:last-child { margin-bottom: 0; }

/* ---------- FAQ ---------- */

.faq-list { margin-top: 2rem; border-top: 1px solid var(--line-strong); }

.faq-list details { border-bottom: 1px solid var(--line-strong); }

.faq-list summary {
  cursor: pointer;
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 1rem;
  padding: 1.15rem 0;
  font-family: var(--font-display);
  font-size: 1.15rem;
  font-weight: 600;
}
.faq-list summary::-webkit-details-marker { display: none; }
.faq-list summary::after {
  content: "+";
  font-family: var(--font-body);
  font-weight: 400;
  font-size: 1.5rem;
  color: var(--accent);
  line-height: 1;
  flex-shrink: 0;
}
.faq-list details[open] summary::after { content: "–"; }

.faq-list .answer { padding: 0 0 1.25rem; color: var(--ink-soft); }
.faq-list .answer p:last-child { margin-bottom: 0; }

/* ---------- CTA band ---------- */

.cta-band {
  background: var(--ink);
  color: var(--paper);
}

.cta-band h2 { color: var(--paper); }
.cta-band .accent-word { color: var(--accent); }
.cta-band p { color: rgba(251, 246, 236, 0.78); }

.cta-band .btn-primary { border-color: var(--paper); box-shadow: 4px 4px 0 var(--accent-deep); }
.cta-band .btn-primary:hover { box-shadow: 6px 6px 0 var(--accent-deep); }

.cta-band-inner {
  display: grid;
  grid-template-columns: minmax(0, 1.6fr) minmax(0, 1fr);
  gap: 2rem;
  align-items: center;
}

.cta-band-inner .btn-wrap { text-align: right; }

/* ---------- Setup page ---------- */

.page-intro { padding-top: clamp(3rem, 8vw, 5rem); }

.step-list {
  list-style: none;
  margin: 2rem 0 0;
  padding: 0;
  counter-reset: step;
}

.step-list > li {
  counter-increment: step;
  display: grid;
  grid-template-columns: 3.25rem minmax(0, 1fr);
  gap: 1.25rem;
  padding: 1.75rem 0;
  border-top: 1px dashed var(--line-strong);
}

.step-list > li::before {
  content: counter(step);
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1.3rem;
  color: #fff;
  background: var(--moss);
  border-radius: 50%;
  width: 2.5rem;
  height: 2.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
}

.step-list h3 { margin-bottom: 0.35rem; }
.step-list ul { margin: 0.5rem 0 0; padding-left: 1.2rem; color: var(--ink-soft); }
.step-list ul li { margin-bottom: 0.3rem; }
.step-list p { color: var(--ink-soft); margin-bottom: 0.4rem; }

.do-dont {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(16rem, 1fr));
  gap: 1.25rem;
  margin-top: 1.25rem;
  max-width: 100%;
}

.do-dont .panel {
  background: #fff;
  border: 1px solid var(--line-strong);
  border-radius: 6px;
  padding: 1.25rem 1.4rem;
}
.do-dont .panel.good { border-top: 5px solid var(--moss); }
.do-dont .panel.bad { border-top: 5px solid var(--accent-deep); }
.do-dont h4 {
  margin: 0 0 0.6rem;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}
.do-dont .good h4 { color: var(--moss); }
.do-dont .bad h4 { color: var(--accent-deep); }
.do-dont ul { margin: 0; padding-left: 1.2rem; color: var(--ink-soft); }
.do-dont li { margin-bottom: 0.35rem; }

/* ---------- Footer ---------- */

.site-footer {
  border-top: 1px solid var(--line);
  padding: 2.5rem 0 3rem;
  font-size: 0.88rem;
  color: var(--ink-soft);
}

.site-footer .wrap {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem 2.5rem;
  justify-content: space-between;
}

.site-footer p { margin: 0; max-width: 52ch; }
.site-footer nav { display: flex; gap: 1.5rem; }

/* ---------- Kit page (facilitator run-of-show) ---------- */

.badge {
  display: inline-block;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: #fff;
  background: var(--accent-deep);
  border-radius: 3px;
  padding: 0.25rem 0.6rem;
  margin-left: 0.6rem;
}

/* At-a-glance agenda strip */
.timeline {
  list-style: none;
  margin: 2rem 0 0;
  padding: 0;
  border: 2px solid var(--ink);
  border-radius: 6px;
  overflow: hidden;
  background: #fff;
}

.timeline li { border-bottom: 1px solid var(--line); }
.timeline li:last-child { border-bottom: none; }

.timeline a {
  display: grid;
  grid-template-columns: 6.5rem 3.5rem minmax(0, 1fr);
  gap: 1rem;
  align-items: baseline;
  padding: 0.8rem 1.25rem;
  text-decoration: none;
  color: var(--ink);
}
.timeline a:hover { background: var(--paper-deep); }

.timeline .t-start {
  font-family: var(--font-display);
  font-weight: 600;
  font-variant-numeric: tabular-nums;
}
.timeline .t-min {
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--moss);
  white-space: nowrap;
}
.timeline .t-name { font-weight: 500; }

/* Segment cards */
.segment {
  background: #fff;
  border: 2px solid var(--ink);
  border-radius: 6px;
  box-shadow: 5px 5px 0 rgba(34, 49, 42, 0.85);
  margin-top: 2.25rem;
  overflow: hidden;
  scroll-margin-top: 5rem;
}

.segment-head {
  display: flex;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
  background: var(--ink);
  color: var(--paper);
  padding: 0.85rem 1.5rem;
}

.segment-head h3 {
  color: var(--paper);
  margin: 0;
  font-size: 1.25rem;
}

.time-chip {
  font-family: var(--font-body);
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  font-variant-numeric: tabular-nums;
  background: var(--accent);
  color: #fff;
  border-radius: 999px;
  padding: 0.25rem 0.8rem;
  white-space: nowrap;
}

.segment-body { padding: 1.4rem 1.5rem 1.6rem; }

.segment-body .goal {
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-style: italic;
  color: var(--moss);
}

.segment-body h4 {
  margin: 1.25rem 0 0.4rem;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--ink-soft);
}

.segment-body ul, .segment-body ol {
  margin: 0.25rem 0 0;
  padding-left: 1.25rem;
  color: var(--ink-soft);
}
.segment-body li { margin-bottom: 0.35rem; }

/* Copy-ready prompt starters */
.prompt-block {
  font-family: "Courier New", monospace;
  font-size: 0.9rem;
  line-height: 1.55;
  background: var(--paper-deep);
  border: 1px dashed var(--line-strong);
  border-left: 4px solid var(--moss);
  border-radius: 4px;
  padding: 1rem 1.2rem;
  margin: 0.5rem 0 0;
  white-space: pre-wrap;
  overflow-x: auto;
  max-width: 100%;
}

.script-label {
  margin: 1.75rem 0 0.4rem;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--ink-soft);
}

/* Checkpoint + running-behind callouts */
.checkpoint, .behind {
  border-radius: 4px;
  padding: 0.85rem 1.1rem;
  margin-top: 1.25rem;
  font-size: 0.95rem;
}
.checkpoint {
  background: rgba(64, 96, 78, 0.09);
  border-left: 4px solid var(--moss);
}
.behind {
  background: rgba(217, 93, 14, 0.08);
  border-left: 4px solid var(--accent);
}
.checkpoint strong, .behind strong {
  display: block;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  margin-bottom: 0.25rem;
}
.checkpoint strong { color: var(--moss); }
.behind strong { color: var(--accent-deep); }

@media (max-width: 46rem) {
  .timeline a { grid-template-columns: 4.5rem minmax(0, 1fr); }
  .timeline .t-min { display: none; }
}

/* ---------- Responsive ---------- */

@media (max-width: 46rem) {
  .hero-grid { grid-template-columns: 1fr; }
  .ticket { transform: none; max-width: 26rem; }
  .cta-band-inner { grid-template-columns: 1fr; }
  .cta-band-inner .btn-wrap { text-align: left; }
  .outcome-list li { grid-template-columns: 3rem minmax(0, 1fr); gap: 0.9rem; }
  .site-nav .nav-link-secondary { display: none; }
}