/**
 * SKRAFT Docs — "doc" layout (sidebar grouped by book parts + content)
 * Design inspired by the learning-path handbook (liquid-glass, grouped
 * sidebar, content max ~820px). Uses the green glass tokens from site.css.
 */

.doc-layout {
  display: grid;
  grid-template-columns: 280px minmax(0, 1fr);
  gap: 2.5rem;
  max-width: 1180px;
  margin: 0 auto;
  padding: 6.5rem 1.5rem 4rem;
  align-items: start;
}

/* ============================================================
   SIDEBAR
   ============================================================ */
.doc-sidebar {
  position: sticky;
  top: 6.5rem;
  max-height: calc(100vh - 8rem);
  overflow-y: auto;
  padding: 1.25rem 1rem 1.25rem 0;
  border-right: 1px solid var(--glass-border);
}
.doc-sidebar__group {
  display: flex;
  align-items: center;
  gap: 0.5em;
  font-size: 0.72rem;
  font-weight: 900;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  color: var(--color-highlight);
  margin: 1.25rem 0 0.5rem;
  padding-left: 0.5rem;
}
.doc-sidebar__group i { font-size: 0.95em; opacity: 0.9; }
.doc-sidebar__group:first-child { margin-top: 0; }
.doc-sidebar__list {
  list-style: none;
  margin: 0 0 0.5rem;
  padding: 0;
}
.doc-sidebar__list li { margin: 0; }
.doc-sidebar__list a {
  display: block;
  padding: 0.35rem 0.5rem 0.35rem 0.75rem;
  border-left: 2px solid transparent;
  color: var(--color-dimmed);
  font-size: 0.92rem;
  border-radius: 0 var(--radius) var(--radius) 0;
  transition: color var(--motion-fast), border-color var(--motion-fast),
              background var(--motion-fast);
}
.doc-sidebar__list a:hover {
  color: var(--color-foreground);
  text-decoration: none;
  opacity: 1;
  background: rgba(139, 229, 177, 0.06);
}
.doc-sidebar__list a.active {
  color: var(--color-highlight);
  border-left-color: var(--color-highlight);
  background: rgba(139, 229, 177, 0.1);
  font-weight: 700;
}

/* Section heading (3-level menu: part > section > pages) */
.doc-sidebar__section {
  font-size: 0.66rem;
  font-weight: 800;
  letter-spacing: 1px;
  text-transform: uppercase;
  color: var(--color-dimmed);
  margin: 0.6rem 0 0.25rem;
  padding-left: 0.75rem;
}
.doc-sidebar__sublist {
  margin-bottom: 0.75rem;
}
.doc-sidebar__sublist a {
  padding-left: 1.25rem;
  font-size: 0.88rem;
}

/* ============================================================
   CONTENT (narrower than the default .content)
   ============================================================ */
.doc-content {
  max-width: 820px;
  margin: 0;
  padding: 0;
}

/* ============================================================
   MOBILE TOGGLE
   ============================================================ */
.doc-sidebar-toggle {
  display: none;
  font-family: var(--font-sans);
  font-size: 1.2rem;
  color: var(--color-highlight);
  background: var(--glass-bg-strong);
  border: 1px solid var(--glass-border-strong);
  border-radius: 50%;
  cursor: pointer;
  box-shadow: var(--glass-shadow);
  backdrop-filter: blur(var(--glass-blur));
  -webkit-backdrop-filter: blur(var(--glass-blur));
}

@media (max-width: 900px) {
  .doc-layout {
    grid-template-columns: 1fr;
    gap: 1rem;
    padding-top: 5.5rem;
  }
  .doc-sidebar-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    position: fixed;
    bottom: 1.5rem;
    left: 1.5rem;
    z-index: 200;
    width: 48px;
    height: 48px;
    padding: 0;
  }
  .doc-sidebar {
    position: fixed;
    top: 3.5rem;
    left: 0;
    width: 300px;
    max-height: calc(100vh - 3.5rem);
    z-index: 150;
    padding: 1.5rem 1rem;
    background: var(--glass-bg-strong);
    box-shadow: var(--glass-shadow-hover);
    display: none;
  }
  .doc-sidebar.is-open { display: block; }
}

/* ============================================================
   Phase ribbon — "vous êtes ici" / "you are here"
   ============================================================ */
.phase-ribbon {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.35rem 0.5rem;
  margin: 0 0 2rem;
  padding: 0.65rem 0.9rem;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius);
  font-family: var(--font-sans);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 1px;
}
.phase-ribbon__step {
  text-decoration: none;
  color: var(--color-text-muted, #9fb4a8);
  padding: 0.2rem 0.55rem;
  border-radius: 999px;
  white-space: nowrap;
}
.phase-ribbon__step:hover { color: var(--color-highlight); }
.phase-ribbon__step--active {
  color: #06120c;
  background: var(--color-highlight);
}
.phase-ribbon__arrow {
  color: var(--color-text-muted, #6f8478);
  opacity: 0.7;
}

/* ============================================================
   Fil rouge box — running Starbucks example (illustrative)
   ============================================================ */
.fil-rouge {
  margin: 1.5rem 0;
  padding: 1rem 1.2rem;
  border-left: 3px solid var(--color-highlight);
  background: color-mix(in srgb, var(--color-highlight) 8%, transparent);
  border-radius: 0 var(--radius) var(--radius) 0;
}
.fil-rouge > :first-child { margin-top: 0; }
.fil-rouge > :last-child { margin-bottom: 0; }
.fil-rouge__label {
  font-family: var(--font-sans);
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 1px;
  text-transform: uppercase;
  color: var(--color-highlight);
}

/* ============================================================
   Doc pager — previous / next (book order)
   ============================================================ */
.doc-pager {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  margin-top: 3rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--glass-border);
}
.doc-pager__link {
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
  max-width: 48%;
  padding: 0.7rem 1rem;
  text-decoration: none;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius);
}
.doc-pager__link:hover { border-color: var(--color-highlight); }
.doc-pager__next { text-align: right; margin-left: auto; }
.doc-pager__dir {
  font-family: var(--font-sans);
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 1px;
  text-transform: uppercase;
  color: var(--color-text-muted, #9fb4a8);
}
.doc-pager__title { color: var(--color-highlight); }