/* Header */
header {
  padding: 0;
  position: sticky;
  top: 0;
  background: var(--bg);
  z-index: 10;
  transition: transform 0.3s ease;
}
header.header-hidden {
  transform: translateY(-100%);
}
header::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent 0%, var(--accent) 50%, transparent 100%);
  opacity: 0.3;
}
header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 56px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 16px;
  font-weight: 700;
  color: var(--text);
  letter-spacing: -0.3px;
  text-decoration: none;
  transition: opacity 0.15s;
}
.logo:hover { opacity: 0.85; }
.logo img {
  width: 56px;
  height: 56px;
  border-radius: 10px;
}

nav {
  display: flex;
  align-items: center;
  gap: 6px;
}
nav a {
  color: var(--muted);
  text-decoration: none;
  font-size: 13px;
  font-weight: 500;
  padding: 6px 12px;
  border-radius: 6px;
  transition: color 0.15s, background 0.15s;
}
nav a:hover {
  color: var(--text);
  background: var(--hover-bg, rgba(255, 255, 255, 0.04));
}
nav .btn {
  margin-left: 4px;
  padding: 7px 14px;
  font-size: 13px;
}
nav .btn:hover {
  background: var(--accent-hover);
}

.nav-burger {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 6px;
  color: var(--muted);
  border-radius: 6px;
  transition: color 0.15s, background 0.15s;
}
.nav-burger:hover { color: var(--text); background: var(--hover-bg, rgba(255,255,255,0.04)); }

/* Footer */
footer {
  padding: 40px 0;
  margin-top: 40px;
  position: relative;
}
footer::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent 0%, var(--accent) 50%, transparent 100%);
  opacity: 0.2;
}
footer .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 13px;
  color: var(--muted);
}
footer .footer-brand {
  font-weight: 600;
  color: var(--text);
  font-size: 14px;
  letter-spacing: -0.2px;
}
footer .footer-links {
  display: flex;
  gap: 8px;
}
footer .footer-links a {
  color: var(--muted);
  text-decoration: none;
  font-size: 13px;
  font-weight: 500;
  padding: 4px 10px;
  border-radius: 5px;
  transition: color 0.15s, background 0.15s;
}
footer .footer-links a:hover {
  color: var(--text);
  background: var(--hover-bg, rgba(255, 255, 255, 0.04));
}

/* Responsive */
@media (max-width: 600px) {
  header .container { height: 48px; }
  .logo img { width: 40px; height: 40px; }
  .logo { font-size: 14px; }
  nav a:not(.btn) { display: none; }
  nav .btn { font-size: 12px; padding: 6px 12px; }
  .nav-burger { display: flex; }

  nav.nav-open {
    position: fixed;
    top: 48px;
    left: 0;
    right: 0;
    background: var(--bg);
    border-top: 1px solid var(--border);
    flex-direction: column;
    align-items: stretch;
    gap: 2px;
    padding: 8px 12px 12px;
    border-bottom: 1px solid var(--border);
    z-index: 9;
  }
  nav.nav-open a:not(.btn) { display: block; }
  nav.nav-open .btn { margin-left: 0; margin-top: 4px; text-align: center; }

  footer .container { flex-direction: column; gap: 12px; align-items: center; }
  footer .footer-links { flex-wrap: wrap; justify-content: center; }
}