/* =============================================================
   sitting.css — Path of Breathing · How to Sit
   Styles for practice/sitting.html (postures illustration etc.).
   Requires shared.css + module.css to be loaded first.
   ============================================================= */

/* Postures illustration — inline vector line art.
   fill="currentColor" inherits the page text color on both themes. */
.postures-img {
  width: 100%;
  height: auto;
  display: block;
  margin: 1.5rem auto 2rem;
}

/* Timer invitation above the sit timer — centered, sans variant of
   the section title. */
.timer-invite {
  text-align: center;
  font-family: var(--sans);
  font-size: clamp(16px, 1.8vw, 20px);
  font-weight: 300;
  color: var(--text);
}

.defs-header {
  display: flex;
  align-items: center;
  gap: 0.45rem;
  cursor: pointer;
  padding: 0.6rem 0;
  font-family: var(--sans);
  font-size: 0.8rem;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  opacity: 0.5;
  user-select: none;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  margin: 0.75rem 0 0.75rem;
  transition: opacity 0.15s;
}
.defs-header:hover { opacity: 0.9; }
.defs-header .toc-chevron { transition: transform 0.2s; display: inline-block; }
.defs-header[aria-expanded="true"] .toc-chevron { transform: rotate(180deg); }
/* .tldr-coda base styles live in shared.css — this page adds only
   the gradient rule above the coda. */
.tldr-coda::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(to right, transparent, var(--border), transparent);
}