/* ============================================================
   Sidebar Additional Styles
   ============================================================ */

/* Sidebar scrollbar */
.sidebar::-webkit-scrollbar { width: 4px; }
.sidebar::-webkit-scrollbar-track { background: transparent; }
.sidebar::-webkit-scrollbar-thumb {
  background: var(--border);
  border-radius: 2px;
}

/* Nav item tooltip on hover (optional) */
.nav-item-label {
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* Active indicator glow */
.nav-item.active svg {
  filter: drop-shadow(0 0 4px var(--cyan-glow));
}

/* Nav section label */
.nav-section-label {
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-muted);
  padding: 12px 12px 6px;
  margin-top: 8px;
}

/* Sidebar collapse button (for future use) */
.sidebar-collapse-btn {
  position: absolute;
  right: -12px;
  top: 50%;
  transform: translateY(-50%);
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  color: var(--text-muted);
  transition: var(--transition);
  z-index: 10;
}

.sidebar-collapse-btn:hover {
  background: var(--bg-hover);
  color: var(--text-primary);
  border-color: var(--border-hover);
}

/* Sidebar logo glow animation */
.logo-icon {
  animation: logo-glow 3s ease-in-out infinite;
}

@keyframes logo-glow {
  0%, 100% { box-shadow: 0 0 12px var(--cyan-glow); }
  50% { box-shadow: 0 0 20px var(--cyan-glow), 0 0 40px rgba(0, 212, 255, 0.1); }
}

/* Sidebar divider */
.sidebar-divider {
  height: 1px;
  background: var(--border);
  margin: 8px 12px;
}

/* Badge in nav */
.nav-badge {
  margin-left: auto;
  background: var(--cyan-dim);
  color: var(--cyan);
  border: 1px solid rgba(0, 212, 255, 0.2);
  border-radius: 10px;
  font-size: 10px;
  font-weight: 700;
  font-family: var(--font-mono);
  padding: 1px 6px;
  min-width: 18px;
  text-align: center;
}

/* Version tag at bottom */
.sidebar-version {
  padding: 8px 16px;
  font-size: 10px;
  color: var(--text-muted);
  font-family: var(--font-mono);
  border-top: 1px solid var(--border);
  text-align: center;
  letter-spacing: 0.06em;
}

/* Sidebar transition for hover state on collapsed */
/* ── Mobile top bar ─────────────────────────────────────── */
.mobile-topbar {
  display: none;
}

@media (max-width: 768px) {
  /* Fixed top bar with hamburger */
  .mobile-topbar {
    display: flex;
    align-items: center;
    gap: 12px;
    position: fixed;
    top: 0; left: 0; right: 0;
    height: 48px;
    background: var(--bg-surface);
    border-bottom: 1px solid var(--border);
    padding: 0 16px;
    z-index: 200;
  }

  .mobile-topbar-title {
    font-family: var(--font-display);
    font-size: 14px;
    font-weight: 700;
    color: var(--text-primary);
    flex: 1;
  }

  .mobile-menu-btn {
    width: 36px;
    height: 36px;
    background: none;
    border: none;
    cursor: pointer;
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    padding: 6px;
    border-radius: var(--radius-sm);
  }

  .mobile-menu-btn span {
    display: block;
    height: 2px;
    background: var(--text-primary);
    border-radius: 2px;
    transition: var(--transition);
  }

  /* Sidebar slides in from left */
  .sidebar {
    position: fixed;
    top: 0; bottom: 0;
    left: -260px;
    z-index: 300;
    transition: left 0.25s ease;
    height: 100%;
  }

  .sidebar.open {
    left: 0;
    box-shadow: 4px 0 40px rgba(0, 0, 0, 0.6);
  }

  /* Dark overlay behind open sidebar */
  .sidebar-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.5);
    z-index: 250;
  }

  .sidebar-overlay.visible {
    display: block;
  }

  .main-content {
    margin-left: 0;
  }

  #app-shell {
    overflow: auto;
  }
}