/* Ukkometa.fi SEO-opas: the hub (/opas/) and every chapter.
   Loaded after blog.css, which it extends: chapters use the post layout
   (.post-container, .post-header, .post-body, .takeaways, .callout) and only
   the guide-specific pieces live here: the chapter trail, the chapter list on
   the hub, the previous/next links and the inline pilot form. */

/* ── Chapter trail above the title ───────────────────────────────────── */
.opas-crumb {
  display: flex; flex-wrap: wrap; align-items: center; gap: .5rem;
  margin: 2.5rem 0 1rem;
  font-size: .8rem; letter-spacing: .04em; text-transform: uppercase;
  color: var(--muted);
}
.opas-crumb a { color: var(--muted); text-decoration: none; }
.opas-crumb a:hover { color: var(--accent); opacity: 1; }
.opas-crumb__sep { color: var(--border); }
.opas-crumb__num { color: var(--accent); font-weight: 600; }

/* ── Hub: the chapter list ────────────────────────────────────────────── */
.opas-hub { max-width: var(--post-max); }
.opas-hub .post-header { padding-bottom: 2rem; }
.opas-list { list-style: none; display: grid; gap: 1rem; margin: 2rem 0 3rem; }
.opas-card {
  display: grid; grid-template-columns: 3.25rem 1fr; gap: 1rem;
  padding: 1.4rem 1.5rem;
  background: var(--surface); border: 1px solid var(--border); border-radius: 4px;
  text-decoration: none; color: inherit;
  transition: border-color .15s, transform .15s;
}
.opas-card:hover { border-color: var(--accent); transform: translateY(-1px); opacity: 1; }
.opas-card__num {
  font-family: var(--font-display); font-size: 1.9rem; font-weight: 700;
  line-height: 1; color: var(--accent);
}
.opas-card__title, .opas-card__excerpt, .opas-card__meta { display: block; }
.opas-card__title {
  font-family: var(--font-display); font-size: 1.2rem; font-weight: 700;
  line-height: 1.3; color: var(--white); margin-bottom: .35rem;
}
.opas-card__excerpt { font-size: .95rem; color: var(--subtle); line-height: 1.6; }
.opas-card__meta { margin-top: .6rem; font-size: .8rem; color: var(--muted); }
.opas-hub .post-body h2 { margin-top: 2.5rem; }

/* ── First-hand element inside a chapter ─────────────────────────────── */
.opas-example { background: var(--surface); border: 1px solid var(--border); border-left: 4px solid var(--accent); border-radius: 4px; padding: 1.25rem 1.5rem; margin: 2rem 0; }
.opas-example__label {
  display: block; margin-bottom: .5rem;
  font-size: .75rem; letter-spacing: .08em; text-transform: uppercase; font-weight: 600; color: var(--accent);
}
.opas-example p { margin: 0 0 .75rem; font-size: 1rem; }
.opas-example p:last-child { margin-bottom: 0; }
.opas-example table { margin: .75rem 0 0; width: 100%; }

/* ── Inline pilot form ────────────────────────────────────────────────── */
.opas-form { margin: 2.5rem 0 0; padding: 1.75rem; background: var(--white); color: var(--black); border-radius: 4px; }
.opas-form__label { display: block; font-size: .75rem; letter-spacing: .08em; text-transform: uppercase; font-weight: 600; color: var(--accent); margin-bottom: .5rem; }
.opas-form__title { font-family: var(--font-display); font-size: 1.35rem; font-weight: 700; line-height: 1.25; margin: 0 0 .5rem; color: var(--black); }
.opas-form__text { font-size: .95rem; line-height: 1.6; color: var(--off); margin: 0 0 1.25rem; opacity: .85; }
.opas-form__row { display: grid; grid-template-columns: 1fr 1fr auto; gap: .75rem; align-items: end; }
.opas-form__field { display: grid; gap: .35rem; }
.opas-form__field span { font-size: .78rem; color: var(--off); opacity: .8; }
.opas-form input[type="url"], .opas-form input[type="email"] {
  width: 100%; padding: .7rem .8rem;
  background: var(--black); color: var(--white);
  border: 1px solid var(--subtle); border-radius: 2px;
  font-family: var(--font-body); font-size: .9rem; outline: none;
}
.opas-form input:focus { border-color: var(--accent); }
.opas-form__btn {
  padding: .78rem 1.3rem; border: none; border-radius: 999px;
  background: var(--accent); color: #fff;
  font-family: var(--font-body); font-size: .9rem; font-weight: 600; cursor: pointer;
  transition: opacity .2s, transform .15s; white-space: nowrap;
}
.opas-form__btn:hover { opacity: .88; transform: translateY(-1px); }
.opas-form__btn:disabled { opacity: .6; cursor: default; transform: none; }
.opas-form__status { margin: .9rem 0 0; font-size: .9rem; min-height: 1.3em; }
.opas-form__status.ok { color: #c9b062; }
.opas-form__status.err { color: #e09a9a; }
.opas-form__fine { margin: .75rem 0 0; font-size: .78rem; color: var(--off); opacity: .7; }

/* ── Previous / next chapter ──────────────────────────────────────────── */
.opas-nav { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; margin: 3rem 0 4rem; }
.opas-nav a {
  display: block; padding: 1.1rem 1.25rem;
  background: var(--surface); border: 1px solid var(--border); border-radius: 4px;
  text-decoration: none; color: inherit; transition: border-color .15s;
}
.opas-nav a:hover { border-color: var(--accent); opacity: 1; }
.opas-nav a.is-next { text-align: right; }
.opas-nav__label { display: block; font-size: .75rem; letter-spacing: .06em; text-transform: uppercase; color: var(--muted); margin-bottom: .3rem; }
.opas-nav__title { display: block; font-family: var(--font-display); font-weight: 700; font-size: 1.02rem; line-height: 1.3; color: var(--white); }

@media (max-width: 700px) {
  .opas-card { grid-template-columns: 2.5rem 1fr; padding: 1.1rem 1.1rem; }
  .opas-card__num { font-size: 1.5rem; }
  .opas-form { padding: 1.25rem; }
  .opas-form__row { grid-template-columns: 1fr; }
  .opas-nav { grid-template-columns: 1fr; }
  .opas-nav a.is-next { text-align: left; }
}