header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 999;
  background: rgba(11,15,14,0.95);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 20px;
  height: 52px;
}

.logo {
  font-family: var(--font-display);
  font-size: 17px;
  font-weight: 800;
  color: var(--accent);
  display: flex;
  align-items: center;
  gap: 8px;
}

.logo-badge {
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--muted);
  background: var(--bg3);
  border: 1px solid var(--border);
  padding: 2px 8px;
  border-radius: 20px;
  letter-spacing: .3px;
}

nav {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 999;
  background: rgba(13,19,17,0.98);
  border-top: 1px solid var(--border);
  display: flex;
  position: fixed;
  overflow: hidden;
}

.nav-indicator {
  position: absolute;
  top: 0;
  left: 0;
  width: 20%;
  height: 2px;
  background: var(--accent);
  border-radius: 0 0 3px 3px;
  transform: translateX(0%);
  transition: transform .28s ease, width .28s ease;
  pointer-events: none;
}

.nav-btn {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 2px;
  padding: 8px 4px 12px;
  border: none;
  background: none;
  cursor: pointer;
  color: var(--muted);
  font-family: var(--font-body);
  font-size: 10px;
  font-weight: 500;
  transition: color .2s;
  position: relative;
}

.nav-btn.active { color: var(--accent); }

.nav-icon { font-size: 17px; line-height: 1; }