.header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--bg-primary);
  border-bottom: 1px solid var(--border);
  height: var(--header-height);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  gap: 1rem;
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  text-decoration: none;
  color: inherit;
  flex-shrink: 0;
}

.logo:hover { text-decoration: none; }

.logo-mark {
  width: 32px;
  height: 32px;
  background: var(--text-primary);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-display);
  font-size: 0.6rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: #fff;
  box-shadow: var(--shadow-sm);
}

.logo-text strong {
  font-family: var(--font-display);
  font-size: 0.95rem;
  font-weight: 800;
  color: var(--text-primary);
  letter-spacing: -0.01em;
}

.logo-text span { display: none; }

.nav { display: flex; align-items: center; gap: 0.15rem; }

.nav-link {
  padding: 0.4rem 0.75rem;
  border-radius: var(--radius-sm);
  color: var(--text-muted);
  font-size: 0.82rem;
  font-weight: 500;
  text-decoration: none;
  transition: color 0.2s, background 0.2s;
}

.nav-link:hover,
.nav-link.active {
  color: var(--text-primary);
  background: var(--bg-secondary);
  text-decoration: none;
}

.nav-play {
  margin-left: 0.35rem;
  padding: 0.45rem 1rem !important;
  background: var(--accent) !important;
  color: #fff !important;
  font-weight: 700 !important;
  font-family: var(--font-display);
  letter-spacing: 0.04em;
}

.nav-play:hover { background: var(--accent-dim) !important; color: #fff !important; }

.menu-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.5rem;
}

.menu-toggle span {
  display: block;
  width: 20px;
  height: 2px;
  background: var(--text-primary);
  border-radius: 1px;
}

.footer {
  background: var(--bg-elevated);
  border-top: 1px solid var(--border);
  padding: 2.5rem 0 1.25rem;
  margin-top: 0;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 2rem;
  margin-bottom: 1.5rem;
}

.footer-brand strong {
  font-family: var(--font-display);
  font-size: 1rem;
  display: block;
  margin-bottom: 0.5rem;
}

.footer-brand p { color: var(--text-muted); font-size: 0.85rem; line-height: 1.55; }

.footer-links h4 {
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-muted);
  margin-bottom: 0.6rem;
}

.footer-links a {
  display: block;
  color: var(--text-secondary);
  font-size: 0.85rem;
  margin-bottom: 0.4rem;
  text-decoration: none;
}

.footer-links a:hover { color: var(--text-primary); text-decoration: none; }

.footer-bottom {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 0.5rem;
  padding-top: 1.25rem;
  border-top: 1px solid var(--border);
  font-size: 0.78rem;
  color: var(--text-muted);
}

@media (max-width: 640px) {
  .menu-toggle { display: flex; }
  .nav {
    display: none;
    position: absolute;
    top: var(--header-height);
    left: 0;
    right: 0;
    flex-direction: column;
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border);
    padding: 0.65rem;
  }
  .nav.open { display: flex; }
  .nav-link { padding: 0.65rem 0.85rem; }
  .nav-play { margin-left: 0 !important; margin-top: 0.25rem; text-align: center; }
  .footer-grid { grid-template-columns: 1fr; gap: 1.25rem; }
}