/* ==========================================================================
   Grundlayout: Header, Navigation, Shell, Footer
   Mobile First – Desktop-Regeln stehen in den Media Queries am Ende.
   ========================================================================== */

/* ------------------------------------------------------------------ Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: color-mix(in oklab, var(--bg) 82%, transparent);
  backdrop-filter: saturate(1.6) blur(14px);
  -webkit-backdrop-filter: saturate(1.6) blur(14px);
  border-bottom: 1px solid var(--border);
  padding-top: env(safe-area-inset-top);
}

.site-header__inner {
  max-width: var(--shell-max);
  margin-inline: auto;
  padding: var(--space-3) var(--space-4);
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: center;
  gap: var(--space-3);
}

/* ------------------------------------------------------------------- Marke */
.brand {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  text-decoration: none;
  color: inherit;
  min-width: 0;
}

.brand__mark {
  display: grid;
  place-items: center;
  width: 38px;
  height: 38px;
  flex: none;
  border-radius: var(--radius-md);
  background: linear-gradient(145deg, var(--accent), color-mix(in oklab, var(--accent) 60%, #12d1a1));
  color: #fff;
  box-shadow: var(--shadow-accent);
  transition: transform var(--t-med) var(--ease-back);
}

.brand:hover .brand__mark {
  transform: rotate(-8deg) scale(1.06);
}

.brand__mark svg {
  width: 22px;
  height: 22px;
}

.brand__text {
  display: flex;
  flex-direction: column;
  min-width: 0;
}

.brand__name {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.25rem;
  letter-spacing: -0.03em;
  line-height: 1.1;
}

.brand__tag {
  font-size: 0.7rem;
  color: var(--text-subtle);
  letter-spacing: 0.01em;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  /* Auf sehr schmalen Displays ausblenden statt abschneiden. */
  display: none;
}

/* --------------------------------------------------------------- Navigation */
/* Mobile: eigene Zeile als Segmented Control – besser erreichbar als ein
   Hamburger-Menue und mit nur drei Punkten vollkommen ausreichend. */
.nav {
  grid-column: 1 / -1;
  grid-row: 2;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-1);
  padding: 4px;
  background: var(--surface-sunken);
  border: 1px solid var(--border);
  border-radius: var(--radius-full);
}

.nav__item {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  min-height: 40px;
  padding-inline: var(--space-3);
  border-radius: var(--radius-full);
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text-muted);
  white-space: nowrap;
  transition: color var(--t-fast) var(--ease), background var(--t-fast) var(--ease);
}

.nav__item svg {
  width: 17px;
  height: 17px;
}

.nav__item:hover {
  color: var(--text);
}

.nav__item.is-active {
  background: var(--surface);
  color: var(--accent-text);
  box-shadow: var(--shadow-sm);
}

/* ------------------------------------------------------------- Icon-Aktionen */
.site-header__actions {
  display: flex;
  align-items: center;
  gap: var(--space-1);
  justify-self: end;
}

/* --------------------------------------------------------------------- Shell */
.shell {
  flex: 1;
  width: 100%;
  max-width: var(--shell-max);
  margin-inline: auto;
  padding: var(--space-5) var(--space-4) var(--space-7);
}

.view {
  animation: view-in var(--t-med) var(--ease);
}

@keyframes view-in {
  from {
    opacity: 0;
    transform: translateY(6px);
  }
}

/* ------------------------------------------------------------------- Footer */
.site-footer {
  border-top: 1px solid var(--border);
  padding: var(--space-5) var(--space-4) calc(var(--space-5) + env(safe-area-inset-bottom));
  text-align: center;
  font-size: 0.82rem;
  color: var(--text-muted);
}

.site-footer p + p {
  margin-top: var(--space-1);
}

.site-footer__fine {
  color: var(--text-subtle);
  font-size: 0.78rem;
}

.linkish {
  color: var(--accent-text);
  font: inherit;
  font-weight: 600;
  text-decoration: underline;
  text-underline-offset: 2px;
  /* Vertikale Polsterung vergroessert die Trefferflaeche auf Touch-Geraeten. */
  padding: var(--space-2) 2px;
}

.linkish:hover {
  color: var(--accent-hover);
}

/* ========================================================== Breakpoints === */

/* Ab hier passt der Markenzusatz daneben. */
@media (min-width: 400px) {
  .brand__tag {
    display: block;
  }
}

/* Ab Tablet: Navigation wandert in die Kopfzeile. */
@media (min-width: 860px) {
  .site-header__inner {
    grid-template-columns: 1fr auto 1fr;
    padding-block: var(--space-3);
  }

  .nav {
    grid-column: 2;
    grid-row: 1;
    grid-template-columns: repeat(3, auto);
    justify-self: center;
  }

  .nav__item {
    padding-inline: var(--space-4);
  }

  .shell {
    padding-top: var(--space-6);
  }
}