/* ============================================
   Sidebar Navigation
   ============================================ */

.sidebar-nav {
  width: 220px;
  min-width: 220px;
  background: var(--aw-color-sidebar-bg);
  color: var(--aw-color-sidebar-text);
  display: flex;
  flex-direction: column;
  overflow-y: auto;
  flex-shrink: 0;
  transition: width 0.18s ease, min-width 0.18s ease;
}

/* ── Brand ───────────────────────────────────── */

.sidebar-brand {
  padding: 20px 20px 16px;
  font-size: 1.1rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--aw-color-accent-light);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

/* ── Nav List ────────────────────────────────── */

.nav-list {
  list-style: none;
  margin: 0;
  padding: 8px 0;
  flex: 1;
}

.nav-list li {
  margin: 0;
}

/* ── Nav Item ────────────────────────────────── */

.nav-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 20px;
  color: var(--aw-color-sidebar-muted);
  text-decoration: none;
  font-size: 0.9rem;
  border-left: 3px solid transparent;
  transition: background 0.15s, color 0.15s, border-color 0.15s;
  cursor: pointer;
}

.nav-item:hover,
.nav-item:active {
  background: rgba(255, 255, 255, 0.06);
  color: var(--aw-color-sidebar-hover-bg);
}

.nav-item:focus-visible {
  outline: 2px solid var(--aw-color-accent-light);
  outline-offset: -2px;
}

.nav-item.active {
  background: var(--aw-color-sidebar-active-bg, rgba(37, 99, 235, 0.15));
  color: var(--aw-color-sidebar-active-text);
  border-left-color: var(--aw-color-accent);
}

/* ── Nav Icon ────────────────────────────────── */

.nav-icon {
  font-size: 1.1rem;
  width: 24px;
  text-align: center;
  flex-shrink: 0;
}

.nav-emoji { display: var(--aw-emoji-display); }
.nav-lucide { display: var(--aw-icon-display); }

/* Chat nav icon: show generated asset image when available */
.nav-chat-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 24px;
  height: 24px;
  flex-shrink: 0;
}
.nav-chat-icon.has-avatar .nav-emoji,
.nav-chat-icon.has-avatar .nav-lucide {
  display: none !important;
}
.nav-chat-avatar {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  object-fit: cover;
}

/* ── External Link ───────────────────────────── */

.nav-external {
  opacity: 0.75;
}

.nav-external:hover,
.nav-external:active {
  opacity: 1;
}

/* ── Divider ─────────────────────────────────── */

.nav-divider {
  height: 1px;
  background: rgba(255, 255, 255, 0.08);
  margin: 8px 16px;
}

/* ── Theme Picker ────────────── */
.theme-picker {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  font-size: 13px;
  color: var(--aw-color-sidebar-muted);
}

.theme-select {
  margin-left: auto;
  background: rgba(255, 255, 255, 0.1);
  color: var(--aw-color-sidebar-muted);
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: 4px;
  padding: 3px 6px;
  font-size: 12px;
  cursor: pointer;
  max-width: 110px;
}

.theme-select:focus {
  outline: 1px solid var(--aw-color-accent-light);
}

.theme-select option {
  background: var(--aw-color-sidebar-bg);
  color: var(--aw-color-sidebar-text);
}

@media (min-width: 769px) {
  body.sidebar-collapsed .sidebar-nav {
    width: 0;
    min-width: 0;
    opacity: 0;
    overflow: hidden;
    pointer-events: none;
  }
}