/* ============================================================
   nav.css — top navigation bar and sidebar
   Module Six web app
   ============================================================ */

/* ── Top nav ── */

.topnav {
  height: var(--topnav-height);
  background: var(--color-bg-surface);
  border-bottom: 0.5px solid var(--color-border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 var(--space-6);
  position: sticky;
  top: 0;
  z-index: 100;
}

.topnav__logo {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  text-decoration: none;
}

.topnav__logo-img {
  width: 26px;
  height: 26px;
  border-radius: 50%;
  object-fit: cover;
}

.topnav__logo-text {
  font-size: var(--font-size-md);
  font-weight: 500;
  color: var(--color-text-primary);
  line-height: 1;
}

.topnav__logo-text span {
  color: var(--color-primary);
}

.topnav__links {
  display: flex;
  gap: var(--space-1);
}

.topnav__link {
  font-size: var(--font-size-base);
  padding: 6px var(--space-3);
  border-radius: var(--radius-md);
  color: var(--color-text-secondary);
  text-decoration: none;
  transition: background 0.15s, color 0.15s;
  white-space: nowrap;
}

.topnav__link:hover {
  background: var(--color-bg-subtle);
  color: var(--color-text-primary);
  text-decoration: none;
}

.topnav__link--active {
  background: var(--color-primary-light);
  color: var(--color-primary);
  font-weight: 500;
}

.topnav__link--active:hover {
  background: var(--color-primary-light);
  color: var(--color-primary);
}

.topnav__right {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.topnav__badge {
  font-size: var(--font-size-xs);
  background: var(--color-primary-light);
  color: var(--color-primary);
  padding: 3px 10px;
  border-radius: var(--radius-pill);
  font-weight: 500;
  white-space: nowrap;
}

.topnav__avatar {
  width: 30px;
  height: 30px;
  border-radius: 50%;
  background: var(--color-primary);
  color: white;
  font-size: var(--font-size-xs);
  font-weight: 500;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  flex-shrink: 0;
  border: none;
}

/* ── Sidebar ── */

.sidebar {
  width: var(--sidebar-width);
  background: var(--color-bg-surface);
  border-right: 0.5px solid var(--color-border);
  padding: var(--space-4) 0;
  flex-shrink: 0;
  overflow-y: auto;
  position: sticky;
  top: var(--topnav-height);
  height: calc(100vh - var(--topnav-height));
}

.sidebar__section {
  margin-bottom: var(--space-5);
}

.sidebar__label {
  font-size: var(--font-size-xs);
  font-weight: 500;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  color: var(--color-text-hint);
  padding: 0 var(--space-4);
  margin-bottom: var(--space-2);
  margin-top: var(--space-1);
}

.sidebar__item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 7px var(--space-4);
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  text-decoration: none;
  cursor: pointer;
  transition: background 0.1s;
  gap: var(--space-2);
}

.sidebar__item:hover {
  background: var(--color-bg-subtle);
  color: var(--color-text-primary);
  text-decoration: none;
}

.sidebar__item--active {
  background: var(--color-primary-light);
  color: var(--color-primary);
  font-weight: 500;
}

.sidebar__item--active:hover {
  background: var(--color-primary-light);
  color: var(--color-primary);
}

.sidebar__item-left {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  flex: 1;
  min-width: 0;
}

.sidebar__item-label {
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.sidebar__item-meta {
  font-size: var(--font-size-xs);
  color: var(--color-text-hint);
  flex-shrink: 0;
}

.sidebar__dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--color-border);
  flex-shrink: 0;
}

.sidebar__dot--done    { background: var(--color-primary); }
.sidebar__dot--active  { background: var(--color-primary); }
.sidebar__dot--partial { background: var(--blue-600); }
.sidebar__dot--locked  { background: var(--color-border-light); }

.sidebar__divider {
  height: 0.5px;
  background: var(--color-border-light);
  margin: var(--space-3) var(--space-4);
}