/* ── SHARED NAVBAR — m4th-lab ── */
.nav {
  background: var(--bg2, #fff);
  border-bottom: 0.5px solid var(--border, #E2EBE7);
  padding: 0 48px;
  display: flex;
  align-items: center;
  height: 64px;
  position: sticky;
  top: 0;
  z-index: 200;
  gap: 32px;
}
.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
  text-decoration: none;
}
.nav-logo-name {
  font-size: 17px;
  font-weight: 800;
  color: var(--td, #111827);
  letter-spacing: -0.3px;
  font-family: 'Plus Jakarta Sans', sans-serif;
}
.nav-logo-name span { color: var(--gn, #059669); }

.nav-links {
  display: flex;
  align-items: center;
  gap: 2px;
  flex: 1;
}
.nav-link {
  position: relative;
  padding: 7px 14px;
  border-radius: 8px;
  font-size: 13px;
  font-weight: 600;
  color: var(--ts, #6B7280);
  transition: all 0.15s;
  white-space: nowrap;
  text-decoration: none;
  font-family: 'Plus Jakarta Sans', sans-serif;
}
.nav-link:hover {
  color: var(--td, #111827);
  background: rgba(0,0,0,0.04);
}
.nav-link.active { color: var(--gn, #059669); }
.nav-link.active::after {
  content: '';
  position: absolute;
  bottom: -1px;
  left: 14px;
  right: 14px;
  height: 2px;
  background: var(--gn, #059669);
  border-radius: 1px;
}

.nav-right {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-shrink: 0;
}
.nav-icon-btn {
  width: 34px;
  height: 34px;
  border-radius: 8px;
  border: 0.5px solid var(--border2, #C8DDD5);
  background: transparent;
  color: var(--ts, #6B7280);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.15s;
  font-family: 'Plus Jakarta Sans', sans-serif;
  font-size: 15px;
}
.nav-icon-btn:hover { border-color: var(--gn, #059669); color: var(--gn, #059669); }
.nav-cta {
  padding: 8px 18px;
  background: var(--gn, #059669);
  border-radius: 8px;
  font-size: 13px;
  font-weight: 700;
  color: #fff;
  transition: background 0.15s;
  white-space: nowrap;
  text-decoration: none;
  font-family: 'Plus Jakarta Sans', sans-serif;
}
.nav-cta:hover { background: var(--gd, #047857); }

/* Dark mode */
[data-theme="dark"] .nav {
  background: rgba(10,15,13,0.96);
  border-bottom-color: var(--border, #1E2E24);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}
[data-theme="dark"] .nav-logo-name { color: var(--td, #F0F0EE); }
[data-theme="dark"] .nav-link { color: var(--ts, #6B8070); }
[data-theme="dark"] .nav-link:hover { color: var(--td, #F0F0EE); background: rgba(255,255,255,0.05); }
[data-theme="dark"] .nav-link.active { color: #10B981; }
[data-theme="dark"] .nav-link.active::after { background: #10B981; }
[data-theme="dark"] .nav-icon-btn { border-color: var(--border2, #243B2C); color: var(--ts, #6B8070); }
[data-theme="dark"] .nav-icon-btn:hover { border-color: #10B981; color: #10B981; }
[data-theme="dark"] .nav-cta { background: #10B981; color: #0A0F0D; }
[data-theme="dark"] .nav-cta:hover { background: #34D399; }

@media (max-width: 768px) {
  .nav { padding: 0 16px; height: 56px; gap: 12px; }
  .nav-links { display: none; }
  .nav-logo-name { font-size: 15px; }
}