/* ==========================================================================
   training.css — *-training.unix.institute landing (shared across the six
   course sites; the per-site accent lives in base.css --signal tokens).
   Hero (title + status + terminal), collapsible curriculum, how-it-works
   cards, audience, signup, imprint.
   ========================================================================== */

/* --------------------------------------------------------------------------
   1. Hero
   -------------------------------------------------------------------------- */

.hero {
  position: relative;
  padding: var(--s-9) 0 var(--s-8);
  overflow: hidden;
}

.hero-content {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 200px 1fr minmax(260px, 380px);
  gap: var(--s-6);
  align-items: start;
}

@keyframes hero-rise {
  from { opacity: 0; transform: translateY(20px); }
  to   { opacity: 1; transform: translateY(0); }
}

.hero-meta,
.hero h1,
.hero-tagline,
.hero-body > p,
.hero-author,
.hero-buy,
.hero-terminal {
  animation: hero-rise 0.7s cubic-bezier(0.22, 1, 0.36, 1) backwards;
}

.hero h1                 { animation-delay: 0.05s; }
.hero-tagline            { animation-delay: 0.18s; }
.hero-pitch              { animation-delay: 0.30s; }
.hero-author             { animation-delay: 0.38s; }
.hero-buy                { animation-delay: 0.46s; }
.hero-meta               { animation-delay: 0.48s; }
.hero-terminal           { animation-delay: 0.15s; }

.hero-meta {
  font-family: var(--font-mono);
  font-size: var(--t-xs);
  color: var(--ink-3);
  letter-spacing: 0.06em;
  line-height: 1.7;
}
.hero-meta .num { color: var(--signal); display: block; margin-bottom: 4px; }
.hero-meta .label { text-transform: uppercase; letter-spacing: 0.12em; color: var(--ink-2); }
.hero-meta .wink { display: block; margin-top: 10px; font-size: var(--t-xxs); color: var(--ink-4); }

.hero-body { min-width: 0; }

.hero h1 {
  font-family: var(--font-sans);
  font-size: clamp(44px, 6.8vw, 92px);
  line-height: 0.96;
  letter-spacing: -0.035em;
  font-weight: 600;
  margin: 0;
  color: var(--ink);
  text-wrap: balance;
}

.hero-tagline {
  font-family: var(--font-sans);
  font-size: clamp(20px, 2.4vw, 28px);
  font-weight: 500;
  line-height: 1.3;
  letter-spacing: -0.015em;
  color: var(--ink-2);
  margin: var(--s-5) 0 0;
  max-width: 46ch;
  text-wrap: balance;
}

.hero-pitch {
  font-family: var(--font-sans);
  font-size: var(--t-md);
  line-height: 1.6;
  color: var(--ink-2);
  margin: var(--s-5) 0 0;
  max-width: 62ch;
  text-wrap: pretty;
}

.hero-author {
  font-family: var(--font-mono);
  font-size: var(--t-xs);
  letter-spacing: 0.04em;
  color: var(--ink-3);
  margin: var(--s-4) 0 0;
}
.hero-author strong { color: var(--ink-2); font-weight: 500; }

.hero-version { margin: var(--s-4) 0 0; }

.badge-soon {
    display: inline-block;
    font-family: var(--font-mono);
    font-size: var(--t-sm);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--paper);
    background: var(--signal);
    border-radius: 999px;
    padding: 0.5rem 1.1rem;
}

/* Status card in the hero */
.hero-buy {
  margin-top: var(--s-6);
  padding: var(--s-5);
  border: 1px solid var(--line);
  border-radius: var(--r-3);
  background: var(--paper-2);
  max-width: 620px;
}

.hero-status {
    font-family: var(--font-sans);
    font-size: var(--t-sm);
    line-height: 1.6;
    color: var(--ink-2);
    margin: 0 0 var(--s-4);
}
.hero-status strong { color: var(--ink); font-weight: 600; }

.hero-buttons {
  display: flex;
  gap: var(--s-3);
  flex-wrap: wrap;
}

.hero-buy-note {
  font-family: var(--font-mono);
  font-size: var(--t-xs);
  line-height: 1.6;
  color: var(--ink-3);
  margin: var(--s-4) 0 0;
}

/* --------------------------------------------------------------------------
   2. Hero terminal — the course happens in one of these
   -------------------------------------------------------------------------- */

.hero-terminal {
  align-self: center;
  border-radius: 10px;
  overflow: hidden;
  border: 1px solid var(--line);
  background: #101014;
  box-shadow:
    0 2px 6px rgba(0, 0, 0, 0.18),
    0 24px 48px -18px rgba(0, 0, 0, 0.35);
}
[data-theme="dark"] .hero-terminal {
  border-color: var(--line-strong);
  box-shadow:
    0 2px 6px rgba(0, 0, 0, 0.5),
    0 24px 48px -18px rgba(0, 0, 0, 0.65);
}

.term-bar {
  display: flex;
  gap: 6px;
  padding: 10px 12px;
  background: #1a1a21;
  border-bottom: 1px solid #26262e;
}
.term-dot { width: 10px; height: 10px; border-radius: 50%; background: #3a3a44; }

.term-body {
  display: block;
  padding: 16px 18px 20px;
  font-family: var(--font-mono);
  font-size: 13px;
  line-height: 2;
  color: #c9c9d1;
  overflow-x: auto;
}
.term-line { display: block; white-space: pre; }
.term-body .cmt { color: #6b6b76; }
.term-body .p { color: var(--signal-bright); margin-right: 9px; user-select: none; }

.term-caret {
  display: inline-block;
  width: 8px;
  height: 1.1em;
  vertical-align: text-bottom;
  background: var(--signal-bright);
  animation: caret-blink 1.2s steps(1) infinite;
}
@keyframes caret-blink { 50% { opacity: 0; } }

/* --------------------------------------------------------------------------
   3. Sections shared
   -------------------------------------------------------------------------- */

.toc-section,
.how,
.audience {
  padding: var(--s-9) 0 0;
}

code {
  font-family: var(--font-mono);
  font-size: 0.9em;
  background: var(--paper-2);
  border: 1px solid var(--line);
  border-radius: var(--r-1);
  padding: 1px 5px;
  color: var(--signal-ink);
  white-space: nowrap;
}

/* --------------------------------------------------------------------------
   4. Curriculum — collapsible parts
   -------------------------------------------------------------------------- */

.toc-preface {
  display: grid;
  grid-template-columns: 92px 1fr;
  gap: var(--s-4);
  align-items: baseline;
  border-top: 1px solid var(--ink);
  padding: var(--s-4) 0;
  border-bottom: 1px solid var(--line);
}

.toc-preface .toc-kicker {
  font-family: var(--font-mono);
  font-size: var(--t-xs);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--signal);
}

.toc-preface h3 {
  font-family: var(--font-sans);
  font-size: var(--t-md);
  font-weight: 600;
  letter-spacing: -0.015em;
  color: var(--ink);
  margin: 0;
}

.toc-part {
  border-bottom: 1px solid var(--line);
}

.toc-summary {
  display: grid;
  grid-template-columns: 92px 1fr auto;
  gap: var(--s-4);
  align-items: baseline;
  padding: var(--s-4) 0;
  cursor: pointer;
  list-style: none;
  transition: color 0.15s ease;
}

.toc-summary::-webkit-details-marker { display: none; }
.toc-summary:focus-visible { outline: 2px solid var(--signal); outline-offset: 3px; }

.toc-part-num {
  font-family: var(--font-mono);
  font-size: var(--t-xs);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--signal);
}

.toc-part-title {
  font-family: var(--font-sans);
  font-size: var(--t-lg);
  font-weight: 600;
  letter-spacing: -0.015em;
  color: var(--ink);
}

.toc-summary:hover .toc-part-title { color: var(--signal); }

.toc-part-aside {
  display: inline-flex;
  align-items: center;
  gap: var(--s-3);
  font-family: var(--font-mono);
  font-size: var(--t-xs);
  color: var(--ink-3);
  white-space: nowrap;
}

.toc-chevron {
  width: 12px;
  height: 12px;
  stroke: var(--ink-3);
  stroke-width: 1.6;
  fill: none;
  transition: transform 0.2s ease;
}

.toc-part[open] .toc-chevron { transform: rotate(180deg); }
.toc-summary:hover .toc-chevron { stroke: var(--signal); }

.toc-chapters {
  list-style: none;
  margin: 0;
  padding: 0 0 var(--s-5) 92px;
  columns: 2;
  column-gap: var(--s-7);
}

.toc-chapters li {
  display: flex;
  gap: var(--s-3);
  align-items: baseline;
  padding: 5px 0;
  font-family: var(--font-sans);
  font-size: var(--t-sm);
  color: var(--ink-2);
  break-inside: avoid;
}

.toc-chapters .ch-num {
  font-family: var(--font-mono);
  font-size: var(--t-xs);
  color: var(--ink-4);
  min-width: 1.6em;
  text-align: right;
  flex-shrink: 0;
}

/* --------------------------------------------------------------------------
   5. How it works
   -------------------------------------------------------------------------- */

.how-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--s-5);
  border-top: 1px solid var(--ink);
  padding-top: var(--s-6);
}

.how-card {
  border: 1px solid var(--line);
  border-radius: var(--r-3);
  background: var(--paper-2);
  padding: var(--s-5);
}

.how-card .how-num {
  font-family: var(--font-mono);
  font-size: var(--t-xs);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--signal);
}

.how-card h3 {
  font-family: var(--font-sans);
  font-size: var(--t-lg);
  font-weight: 600;
  letter-spacing: -0.015em;
  color: var(--ink);
  margin: var(--s-3) 0 var(--s-2);
}

.how-card p {
  font-family: var(--font-sans);
  font-size: var(--t-sm);
  line-height: 1.65;
  color: var(--ink-2);
  margin: 0;
}

.how-mode {
  font-family: var(--font-mono);
  font-size: var(--t-xs);
  letter-spacing: 0.04em;
  color: var(--ink-3);
  margin-top: var(--s-5);
}

/* --------------------------------------------------------------------------
   6. Who it's for
   -------------------------------------------------------------------------- */

.audience-grid {
  border-top: 1px solid var(--ink);
  padding-top: var(--s-5);
}

.audience-label {
  font-family: var(--font-mono);
  font-size: var(--t-xs);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: var(--s-4);
  color: var(--signal);
}

.audience-list {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  margin: 0;
  padding: 0;
  list-style: none;
  font-family: var(--font-sans);
  font-size: var(--t-sm);
  line-height: 1.65;
  color: var(--ink-2);
}

.audience-list li {
  display: flex;
  gap: var(--s-3);
  padding: var(--s-2) var(--s-5) var(--s-2) 0;
  border-right: 1px solid var(--line);
}
.audience-list li + li { padding-left: var(--s-5); }
.audience-list li:last-child { border-right: 0; padding-right: 0; }

.audience-list li::before {
  content: "+";
  font-family: var(--font-mono);
  color: var(--signal);
  flex-shrink: 0;
}

/* --------------------------------------------------------------------------
   7. Signup (Listmonk)
   -------------------------------------------------------------------------- */

.lm-signup { padding: var(--s-9) 0; }
.lm-card { max-width: 760px; border: 1px solid var(--line); border-radius: var(--r-3); background: var(--paper-2); padding: var(--s-7); }
.lm-card h2 { font-family: var(--font-sans); font-size: clamp(26px, 3.5vw, 38px); font-weight: 600; letter-spacing: -0.02em; line-height: 1.05; margin: 0; color: var(--ink); }
.lm-card > p { font-family: var(--font-sans); font-size: var(--t-md); line-height: 1.5; color: var(--ink-2); margin: var(--s-3) 0 0; max-width: 54ch; }
.lm-form { display: flex; gap: var(--s-3); flex-wrap: wrap; align-items: center; margin-top: var(--s-5); }
.lm-form input[type="email"] { flex: 1 1 260px; min-width: 0; font-family: var(--font-sans); font-size: var(--t-base); color: var(--ink); background: var(--paper); border: 1px solid var(--line-strong); border-radius: var(--r-2); padding: 11px 14px; line-height: 1.2; }
.lm-form input[type="email"]::placeholder { color: var(--ink-4); }
.lm-form input[type="email"]:focus { outline: none; border-color: var(--signal); box-shadow: 0 0 0 3px var(--signal-soft); }
.lm-form .btn-primary { flex: 0 0 auto; }
.lm-micro { font-family: var(--font-mono); font-size: var(--t-xs); letter-spacing: 0.02em; color: var(--ink-3); margin: var(--s-4) 0 0; }
@media (max-width: 560px) { .lm-form .btn-primary { width: 100%; justify-content: center; } .lm-form input[type="email"] { flex: 1 1 100%; } }

/* --------------------------------------------------------------------------
   8. Imprint (subpage)
   -------------------------------------------------------------------------- */

.p-section { padding: var(--s-9) 0; }

.backlink {
  font-family: var(--font-mono);
  font-size: var(--t-xs);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--ink-3);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.backlink:hover { color: var(--signal); }

.imprint-content {
  display: grid;
  grid-template-columns: 200px 1fr;
  gap: var(--s-7);
  align-items: start;
}

.imprint-meta {
  font-family: var(--font-mono);
  font-size: var(--t-xs);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--ink-3);
}

.imprint-details {
  font-family: var(--font-sans);
  font-size: var(--t-sm);
  line-height: 1.7;
  color: var(--ink-2);
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--s-6);
}

.imprint-details strong { font-weight: 600; color: var(--ink); }
.imprint-details a { color: var(--ink); border-bottom: 1px solid var(--line-strong); }
.imprint-details a:hover { color: var(--signal); border-color: var(--signal); }
.imprint-details .detail-group { margin: 0; }

/* --------------------------------------------------------------------------
   9. Responsive
   -------------------------------------------------------------------------- */

@media (max-width: 900px) {
  .hero { padding: var(--s-7) 0 var(--s-7); }
  .hero-content { grid-template-columns: 1fr; gap: var(--s-4); }
  .hero-terminal { max-width: 460px; }
  .hero h1 { font-size: clamp(40px, 11vw, 68px); }
  .hero-tagline { font-size: 20px; }

  .toc-section, .how, .audience { padding-top: var(--s-7); }

  .toc-chapters { columns: 1; padding-left: 92px; }

  .how-grid { grid-template-columns: 1fr; }

  .audience-list { grid-template-columns: 1fr; }
  .audience-list li {
    border-right: 0;
    border-bottom: 1px solid var(--line);
    padding: var(--s-4) 0;
  }
  .audience-list li + li { padding-left: 0; }
  .audience-list li:last-child { border-bottom: 0; }

  .imprint-content { grid-template-columns: 1fr; gap: var(--s-4); }
  .imprint-details { grid-template-columns: 1fr; gap: var(--s-4); }
}

@media (max-width: 560px) {
  .toc-summary { grid-template-columns: 1fr auto; }
  .toc-part-num { grid-column: 1 / -1; }
  .toc-preface { grid-template-columns: 1fr; gap: var(--s-1); }
  .toc-chapters { padding-left: 0; }
}

/* --------------------------------------------------------------------------
   10. Reduced motion
   -------------------------------------------------------------------------- */

@media (prefers-reduced-motion: reduce) {
  .hero-meta, .hero h1, .hero-tagline,
  .hero-body > p, .hero-author, .hero-buy, .hero-terminal {
    animation: none !important;
  }
  .term-caret { animation: none !important; }
  .toc-chevron { transition: none !important; }
}

/* ── Consulting note ─────────────────────────────────────────── */
.consulting {
    padding: 3rem 0;
    border-top: 1px solid var(--line);
}
.consulting-note {
    text-align: center;
    font-size: 1.05rem;
    color: var(--ink-2);
    max-width: 46rem;
    margin: 0 auto;
}
.consulting-note a {
    color: var(--signal);
    font-weight: 600;
    text-decoration: underline;
    text-underline-offset: 3px;
}

/* ── Footer trademark note ───────────────────────────────────── */
.footer-trademark {
    font-size: 0.8rem;
    color: var(--ink-3, #8a8a8a);
    text-align: center;
    max-width: 44rem;
    margin: 0 auto 1.5rem;
}
.footer-trademark a { color: inherit; text-decoration: underline; }