/**
 * @file guide-sidebar.css
 * Verid — Guide Sidebar
 *
 * The editorial chapter/guide navigation component.
 * Inspired by maze.co's numbered guide progression UI.
 *
 * This styles blocks placed in the sidebar region that carry
 * the class .block--verid-guide-nav (set via block configuration
 * or custom block template).
 *
 * Works with standard Drupal menu blocks placed in the sidebar.
 */

/* ─── Guide series header ────────────────────────────────── */

.verid-guide {
  position: relative;
}

/* Guide label above the series */
.verid-guide__series {
  display: inline-flex;
  align-items: center;
  gap: var(--verid-space-2);
  font-family: var(--verid-font-body);
  font-size: var(--verid-text-xs);
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--verid-color-text-muted);
  margin-block-end: var(--verid-space-5);
  padding-block-end: var(--verid-space-5);
  border-bottom: 1px solid var(--verid-color-border);
  width: 100%;
}

/* ─── Chapter list ──────────────────────────────────────── */

.verid-guide__chapters {
  list-style: none;
  margin: 0;
  padding: 0;
  counter-reset: chapter;
}

.verid-guide__chapters > li {
  counter-increment: chapter;
  margin-block-end: var(--verid-space-1);
}

.verid-guide__chapters > li > a,
.verid-guide__chapters > li > span {
  display: grid;
  grid-template-columns: 28px 1fr;
  gap: var(--verid-space-3);
  align-items: start;
  padding: var(--verid-space-3) var(--verid-space-3);
  border-radius: var(--verid-radius);
  text-decoration: none;
  font-family: var(--verid-font-body);
  font-size: var(--verid-text-sm);
  font-weight: 400;
  color: var(--verid-color-text-secondary);
  line-height: var(--verid-leading-snug);
  transition: background-color var(--verid-transition-fast), color var(--verid-transition-fast);
  position: relative;
  hyphens: auto;
  overflow-wrap: anywhere;
  min-width: 0;
}

/* Chapter number circle */
.verid-guide__chapters > li > a::before,
.verid-guide__chapters > li > span::before {
  content: counter(chapter, decimal-leading-zero);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 26px;
  height: 26px;
  border-radius: var(--verid-radius-full);
  background-color: #F0F8FF;
  font-size: 10px;
  font-weight: 700;
  font-family: var(--verid-font-body);
  color: var(--verid-color-text-muted);
  letter-spacing: 0;
  flex-shrink: 0;
  transition: background-color var(--verid-transition-fast), color var(--verid-transition-fast);
  margin-block-start: 1px;
}

/* Hover state */
.verid-guide__chapters > li > a:hover {
  background-color: var(--verid-color-surface);
  color: var(--verid-color-text);
}

/* Active / current chapter */
.verid-guide__chapters > li.is-active > a,
.verid-guide__chapters > li.menu-item--active-trail > a {
  background-color: var(--verid-color-accent-light);
  color: var(--verid-color-accent);
  font-weight: 500;
}

.verid-guide__chapters > li.is-active > a::before,
.verid-guide__chapters > li.menu-item--active-trail > a::before {
  background-color: var(--verid-color-accent);
  color: #fff;
}

/* Completed chapters */
.verid-guide__chapters > li.is-done > a {
  color: var(--verid-color-text-muted);
}

.verid-guide__chapters > li.is-done > a::before {
  background-color: #E8F5EE;
  color: #2E7D55;
  content: '✓';
  font-size: 11px;
}

/* ─── Sub-sections (anchors within chapter) ─────────────── */

.verid-guide__chapters .menu {
  padding-inline-start: calc(28px + var(--verid-space-3) + var(--verid-space-3));
  padding-block: var(--verid-space-1) var(--verid-space-2);
  list-style: none;
  margin: 0;
}

.verid-guide__chapters .menu-item {
  margin-block-end: 0;
}

.verid-guide__chapters .menu-item > a {
  display: block;
  padding: var(--verid-space-2) var(--verid-space-3);
  font-size: var(--verid-text-xs);
  font-weight: 400;
  color: var(--verid-color-text-muted);
  text-decoration: none;
  border-radius: var(--verid-radius-sm);
  transition: color var(--verid-transition-fast);
  position: relative;
  overflow-wrap: anywhere;
}

.verid-guide__chapters .menu-item > a::before {
  content: '';
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 3px;
  height: 0;
  background-color: var(--verid-color-accent);
  border-radius: var(--verid-radius-full);
  transition: height var(--verid-transition-fast);
}

.verid-guide__chapters .menu-item > a:hover {
  color: var(--verid-color-text-secondary);
}

.verid-guide__chapters .menu-item.menu-item--active-trail > a {
  color: var(--verid-color-accent);
  font-weight: 500;
}

.verid-guide__chapters .menu-item.menu-item--active-trail > a::before {
  height: 14px;
}

/* ─── Progress bar track ────────────────────────────────── */

.verid-guide__progress-track {
  height: 4px;
  background-color: var(--verid-color-surface-2);
  border-radius: var(--verid-radius-full);
  margin-block-end: var(--verid-space-5);
  overflow: hidden;
}

.verid-guide__progress-fill {
  height: 100%;
  background-color: var(--verid-color-accent);
  border-radius: var(--verid-radius-full);
  transition: width var(--verid-transition-slow);
  width: var(--verid-progress);
}

/* ─── Guide info footer ─────────────────────────────────── */

.verid-guide__footer {
  margin-block-start: var(--verid-space-6);
  padding-block-start: var(--verid-space-5);
  border-top: 1px solid var(--verid-color-border);
  font-size: var(--verid-text-xs);
  color: var(--verid-color-text-muted);
  display: flex;
  align-items: center;
  justify-content: space-between;
}