/* ── TOPBAR ── */
.topbar {
  position: fixed; top: 0; left: 0; right: 0;
  height: var(--topbar-h);
  background: rgba(6,13,26,0.95);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  display: flex; align-items: center; gap: 14px;
  padding: 0 1.5rem; z-index: 100;
}

.hamburger {
  width: 36px; height: 36px; flex-shrink: 0;
  background: none; border: 1px solid var(--border);
  border-radius: var(--radius-sm); cursor: pointer;
  display: flex; flex-direction: column;
  align-items: center; justify-content: center; gap: 5px;
  transition: border-color 0.2s;
}
.hamburger:hover { border-color: var(--cyan); }
.hamburger span {
  display: block; width: 16px; height: 1.5px;
  background: var(--text-muted); transition: all 0.3s;
}
.hamburger.open span:nth-child(1) { transform: translateY(6.5px) rotate(45deg); background: var(--cyan); }
.hamburger.open span:nth-child(2) { opacity: 0; }
.hamburger.open span:nth-child(3) { transform: translateY(-6.5px) rotate(-45deg); background: var(--cyan); }

.topbar-logo { display: flex; align-items: center; text-decoration: none; }
.topbar-logo img { height: 34px; width: auto; }

.topbar-right { margin-left: auto; display: flex; align-items: center; gap: 10px; }
.topbar-email { font-size: 0.78rem; color: var(--text-muted); font-family: 'JetBrains Mono', monospace; }
.topbar-plan {
  font-size: 0.68rem; font-weight: 700; letter-spacing: 0.08em; text-transform: uppercase;
  padding: 3px 10px; border-radius: 20px;
  background: var(--cyan-dim); color: var(--cyan); border: 1px solid var(--border-md);
}

/* ── SIDEBAR ── */
.sidebar {
  position: fixed; top: var(--topbar-h); left: 0; bottom: 0;
  width: 270px;
  background: rgba(8,18,36,0.98);
  backdrop-filter: blur(12px);
  border-right: 1px solid var(--border);
  display: flex; flex-direction: column;
  transform: translateX(-100%);
  transition: transform 0.28s cubic-bezier(0.4,0,0.2,1);
  z-index: 90;
}
.sidebar.open { transform: translateX(0); }

.sidebar-overlay {
  position: fixed; inset: 0;
  background: rgba(0,0,0,0.5);
  z-index: 80; opacity: 0; pointer-events: none;
  transition: opacity 0.28s;
}
.sidebar-overlay.visible { opacity: 1; pointer-events: all; }

/* ── NAV ── */
.nav { flex: 1; display: flex; flex-direction: column; gap: 2px; padding: 0.75rem 0.5rem; overflow-y: auto; }

.nav-section {
  font-size: 0.63rem; font-weight: 700; letter-spacing: 0.15em; text-transform: uppercase;
  color: var(--text-muted); padding: 0.8rem 0.75rem 0.3rem;
}

.nav-item {
  display: flex; align-items: center; gap: 11px;
  padding: 0.65rem 0.75rem; border-radius: var(--radius-sm);
  text-decoration: none; color: var(--text-muted);
  font-size: 0.88rem; font-weight: 600;
  transition: all 0.15s; border-left: 2px solid transparent;
}
.nav-item:hover { background: var(--bg-hover); color: var(--text); }
.nav-item.active {
  background: var(--cyan-dim); color: var(--cyan);
  border-left-color: var(--cyan);
}
.nav-icon { font-size: 0.9rem; width: 18px; text-align: center; flex-shrink: 0; }

/* ── NAV BOTTOM ── */
.nav-bottom { padding: 0.75rem 0.5rem; border-top: 1px solid var(--border); }

.btn-upgrade {
  display: block; width: 100%; margin-bottom: 8px;
  padding: 0.6rem; text-align: center;
  background: linear-gradient(135deg, #007799, var(--cyan));
  color: var(--bg-deep); border: none; border-radius: var(--radius-sm);
  font-family: 'Exo 2', sans-serif; font-size: 0.82rem; font-weight: 700;
  cursor: pointer; text-decoration: none; letter-spacing: 0.04em;
  transition: opacity 0.2s;
}
.btn-upgrade:hover { opacity: 0.85; }

.nav-user {
  display: flex; align-items: center; gap: 10px;
  padding: 0.65rem 0.75rem; border-radius: var(--radius-sm);
  text-decoration: none; cursor: pointer;
  transition: background 0.15s;
}
.nav-user:hover { background: var(--bg-hover); }

.user-avatar {
  width: 32px; height: 32px; border-radius: 50%; flex-shrink: 0;
  background: var(--cyan-dim); border: 1px solid var(--border-md);
  display: flex; align-items: center; justify-content: center;
  font-size: 0.72rem; font-weight: 700; color: var(--cyan);
}
.user-info { flex: 1; min-width: 0; }
.user-email { font-size: 0.76rem; color: var(--text); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.user-plan-label { font-size: 0.65rem; color: var(--text-muted); }

/* ── LOCKED NAV ITEM ── */
.nav-item-locked {
  opacity: 0.5;
  cursor: pointer;
  position: relative;
}
.nav-item-locked:hover {
  background: var(--bg-hover);
  color: var(--warning) !important;
  opacity: 0.8;
}
.nav-lock {
  margin-left: auto;
  font-size: 0.7rem;
  color: var(--warning);
  flex-shrink: 0;
}

@media (max-width: 600px) {
  .topbar-email { display: none; }
}