/* ============================================================
   SIDEBAR.CSS — OctopusTMS SDK Documentation
   ============================================================ */

/* ---------- Container ---------- */
#sidebar {
  width: var(--sidebar-width);
  flex-shrink: 0;
  height: 100vh;
  position: sticky;
  top: 0;
  overflow-y: auto;
  background: var(--clr-surface);
  border-right: 1px solid var(--clr-border);
  display: flex;
  flex-direction: column;
  padding: 0;
  z-index: 100;
  scrollbar-width: thin;
  scrollbar-color: var(--clr-border) transparent;
  transition: transform var(--transition);
}

#sidebar::-webkit-scrollbar { width: 4px; }
#sidebar::-webkit-scrollbar-track { background: transparent; }
#sidebar::-webkit-scrollbar-thumb { background: var(--clr-border); border-radius: 4px; }

/* ---------- Logo / Brand ---------- */
.sidebar-brand {
  padding: 1.75rem 1.5rem 1.25rem;
  border-bottom: 1px solid var(--clr-border);
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.sidebar-brand .brand-tag {
  font-size: 0.65rem;
  font-weight: 700;
  color: var(--clr-blue-600);
  letter-spacing: 0.25em;
  text-transform: uppercase;
}

.sidebar-brand .brand-name {
  font-size: 1.2rem;
  font-weight: 900;
  color: var(--clr-slate-900);
  letter-spacing: -0.02em;
}

.sidebar-brand .brand-version {
  font-size: 0.72rem;
  color: var(--clr-slate-400);
  font-weight: 500;
}

/* ---------- Search ---------- */
.sidebar-search {
  padding: 1rem 1.25rem;
  border-bottom: 1px solid var(--clr-border);
  position: relative;
}

#search-input {
  width: 100%;
  padding: 0.55rem 0.75rem 0.55rem 2.25rem;
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-sm);
  font-size: 0.82rem;
  font-family: var(--font-sans);
  background: var(--clr-bg);
  color: var(--clr-slate-800);
  outline: none;
  transition: var(--transition);
}

#search-input:focus {
  border-color: var(--clr-blue-600);
  background: white;
  box-shadow: 0 0 0 3px rgba(37,99,235,0.1);
}

#search-input::placeholder { color: var(--clr-slate-400); }

.sidebar-search .search-icon {
  position: absolute;
  left: 2rem;
  top: 50%;
  transform: translateY(-50%);
  color: var(--clr-slate-400);
  font-size: 0.82rem;
  pointer-events: none;
}

/* ---------- Navigation ---------- */
.sidebar-nav {
  padding: 1rem 0 1.5rem;
  flex: 1;
}

.sidebar-section-label {
  padding: 0.75rem 1.5rem 0.35rem;
  font-size: 0.65rem;
  font-weight: 700;
  color: var(--clr-slate-400);
  text-transform: uppercase;
  letter-spacing: 0.18em;
}

.sidebar-link {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.55rem 1.25rem 0.55rem 1.5rem;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--clr-slate-600);
  text-decoration: none;
  border-right: 3px solid transparent;
  transition: var(--transition);
  line-height: 1.4;
  border-radius: var(--radius-sm) 0 0 var(--radius-sm);
  margin: 0 0.25rem;
}

.sidebar-link:hover {
  color: var(--clr-blue-600);
  background: var(--clr-blue-50);
  border-right-color: var(--clr-blue-100);
}

.sidebar-link.active {
  color: var(--clr-blue-600);
  background: var(--clr-blue-50);
  border-right-color: var(--clr-blue-600);
  font-weight: 700;
}

.sidebar-link .link-num {
  font-size: 0.7rem;
  color: var(--clr-slate-400);
  font-weight: 600;
  min-width: 1.2rem;
  text-align: right;
}

/* ---------- Sidebar Footer ---------- */
.sidebar-footer {
  padding: 1rem 1.5rem;
  border-top: 1px solid var(--clr-border);
  font-size: 0.72rem;
  color: var(--clr-slate-400);
}

.sidebar-footer a {
  color: var(--clr-blue-600);
  text-decoration: none;
}

/* ---------- Overlay (mobile) ---------- */
#sidebar-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(15,23,42,0.5);
  z-index: 99;
  backdrop-filter: blur(2px);
}

#sidebar-overlay.open { display: block; }