/* ── Sidebar ── */
.sidebar {
  position: fixed;
  top: 0;
  left: 0;
  bottom: 0;
  width: var(--sidebar-w);
  background: var(--surface);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  z-index: 100;
  overflow-y: auto;
}

.sidebar-brand {
  padding: 24px 20px 20px;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  gap: 10px;
  background: linear-gradient(160deg, rgba(139,92,246,0.07) 0%, transparent 65%);
}

.sidebar-brand svg {
  width: 28px;
  height: 28px;
  color: var(--accent);
  flex-shrink: 0;
}

.sidebar-brand span {
  font-weight: 700;
  font-size: 15px;
  letter-spacing: -0.3px;
}

.sidebar-nav {
  flex: 1;
  padding: 12px 8px;
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.sidebar-nav-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 12px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  color: var(--muted);
  font-size: 14px;
  font-weight: 500;
  transition: background 0.15s, color 0.15s;
  border: none;
  background: none;
  width: 100%;
  text-align: left;
}

.sidebar-nav-item:hover {
  background: rgba(255,255,255,0.04);
  color: var(--text);
}

.sidebar-nav-item.active {
  background: rgba(139,92,246,0.12);
  color: var(--accent);
  position: relative;
}

.sidebar-nav-item.active::before {
  content: '';
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  height: 55%;
  width: 3px;
  background: var(--accent);
  border-radius: 0 3px 3px 0;
  box-shadow: 0 0 10px rgba(139,92,246,0.5);
}

.sidebar-nav-item svg {
  width: 18px;
  height: 18px;
  flex-shrink: 0;
}

.sidebar-realtime {
  padding: 12px 20px;
  border-top: 1px solid var(--border);
}

.realtime-indicator {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  color: var(--muted);
}

.realtime-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--success);
  animation: pulse-dot 2s infinite;
  box-shadow: 0 0 6px rgba(16,185,129,0.6);
}

@keyframes pulse-dot {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.4; }
}

.realtime-rpm {
  font-weight: 600;
  color: var(--text);
  font-size: 13px;
}

.sidebar-user {
  padding: 16px 20px;
  border-top: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.sidebar-user-email {
  font-size: 12px;
  color: var(--muted);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.sidebar-user .btn {
  font-size: 12px;
  padding: 6px 12px;
}

/* ── Mobile sidebar toggle ── */
#sidebarToggle {
  display: none;
}

.mobile-header {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 56px;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  z-index: 110;
  align-items: center;
  padding: 0 16px;
  gap: 12px;
}

.hamburger {
  display: flex;
  flex-direction: column;
  gap: 4px;
  cursor: pointer;
  padding: 8px;
  border-radius: var(--radius-xs);
  transition: background 0.15s;
}

.hamburger:hover {
  background: rgba(255,255,255,0.06);
}

.hamburger span {
  display: block;
  width: 18px;
  height: 2px;
  background: var(--text);
  border-radius: 1px;
  transition: transform 0.2s;
}

.mobile-brand {
  font-weight: 700;
  font-size: 15px;
}

.sidebar-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.5);
  z-index: 99;
}