/* Seitenrahmen: Kopf, Navigation, Inhalt, Fuß, Raster */

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  gap: var(--gap);
  padding: 10px 24px;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--text);
  text-decoration: none;
  font-size: 1.05rem;
  letter-spacing: 0.04em;
  white-space: nowrap;
}
.brand strong { color: var(--accent); }
.brand-sub { color: var(--text-muted); font-size: 0.9rem; letter-spacing: 0.01em; }
@media (max-width: 600px) { .brand-sub { display: none; } }

.site-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 2px;
  flex: 1;
}
.site-nav a {
  padding: 6px 10px;
  border-radius: 6px;
  color: var(--text-muted);
  text-decoration: none;
  font-size: 0.92rem;
}
.site-nav a:hover { background: var(--surface-2); color: var(--text); }
.site-nav a[aria-current="page"] { background: var(--surface-2); color: var(--accent-strong); font-weight: 600; }

.auth-box { display: flex; align-items: center; gap: 8px; white-space: nowrap; font-size: 0.88rem; }
.auth-box:empty { display: none; }
.auth-team { color: var(--accent-strong); font-weight: 600; text-decoration: none; }
.auth-btn { padding: 4px 10px; font-size: 0.85rem; }

.nav-toggle, .theme-toggle {
  border: 1px solid var(--border);
  background: var(--surface-2);
  border-radius: 6px;
  padding: 4px 10px;
  cursor: pointer;
}
.nav-toggle { display: none; }

.page {
  flex: 1;
  width: 100%;
  max-width: 1280px;
  margin: 0 auto;
  padding: 24px;
  outline: none;
}

.page-head { margin-bottom: 20px; }
.page-head p { color: var(--text-muted); max-width: 70ch; margin: 0; }

.section { margin-top: 32px; }

.grid { display: grid; gap: var(--gap); }
.grid-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.grid-auto { grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); }

.site-footer {
  padding: 16px 24px;
  border-top: 1px solid var(--border);
  color: var(--text-muted);
  font-size: 0.85rem;
  text-align: center;
}
.site-footer p { margin: 0; }

@media (max-width: 960px) {
  .grid-4 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .grid-3 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 760px) {
  .site-header { flex-wrap: wrap; padding: 10px 16px; }
  .nav-toggle { display: block; margin-left: auto; }
  .site-nav { display: none; flex-basis: 100%; flex-direction: column; }
  .site-nav.open { display: flex; }
  .page { padding: 16px; }
  .grid-2, .grid-3, .grid-4 { grid-template-columns: minmax(0, 1fr); }
}