/* =========================================================================
   JSC – Layout (Container, Sections, Grid, Header, Footer, Buttons, Cards)
   ========================================================================= */

/* Container ------------------------------------------------------------ */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--container-pad);
}
.container--narrow { max-width: 52rem; }

/* Sections ------------------------------------------------------------- */
.section {
  padding-block: var(--section-py);
}
.section--muted { background: var(--color-bg-muted); }

.section__eyebrow {
  display: inline-block;
  font-size: var(--fs-xs);
  font-weight: var(--fw-semibold);
  letter-spacing: var(--tracking-wide);
  text-transform: uppercase;
  color: var(--color-brand-strong);
  margin-bottom: var(--space-3);
}

.section__header {
  max-width: 48rem;
  margin-bottom: var(--space-7);
}

/* Grid ----------------------------------------------------------------- */
.grid {
  display: grid;
  gap: var(--space-6);
}
.grid--3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid--4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }

@media (max-width: 980px) {
  .grid--4 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 880px) {
  .grid--3 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 560px) {
  .grid--3, .grid--4 { grid-template-columns: 1fr; }
}

/* Header --------------------------------------------------------------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: var(--z-header);
  background: color-mix(in srgb, var(--color-bg) 88%, transparent);
  backdrop-filter: saturate(160%) blur(10px);
  -webkit-backdrop-filter: saturate(160%) blur(10px);
  border-bottom: 1px solid var(--color-border);
}
.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-5);
  height: var(--header-h);
}
.site-header__brand {
  display: inline-flex;
  align-items: center;
  gap: 0;
  font-family: var(--font-heading);
  font-weight: var(--fw-bold);
  color: var(--color-text-strong);
  letter-spacing: var(--tracking-tight);
  font-size: var(--fs-md);
  line-height: 1;
}
.site-header__brand:hover { text-decoration: none; color: var(--color-text-strong); }
.site-header__logo {
  height: 60px;
  width: auto;
  display: block;
  border-radius: 10px;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.12);
}
.site-footer .site-header__logo {
  height: 44px;
  border-radius: 8px;
  box-shadow: none;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: var(--space-6);
}
.site-nav__list {
  display: flex;
  gap: var(--space-6);
  list-style: none;
  margin: 0;
  padding: 0;
}
.site-nav__list li + li { margin-top: 0; }
.site-nav__link {
  color: var(--color-text);
  font-weight: var(--fw-medium);
  font-size: var(--fs-sm);
  padding: 0.25rem 0;
  border-bottom: 2px solid transparent;
  white-space: nowrap;
}
.site-nav__link:hover {
  color: var(--color-text-strong);
  text-decoration: none;
  border-bottom-color: var(--color-brand);
}

/* Sprach-Switcher ------------------------------------------------------ */
.lang-switch {
  display: inline-flex;
  align-items: center;
  gap: 0.125rem;
  padding: 0.25rem;
  background: var(--color-bg-muted);
  border-radius: var(--radius-pill);
  border: 1px solid var(--color-border);
}
.lang-switch__item {
  font-size: var(--fs-xs);
  font-weight: var(--fw-semibold);
  letter-spacing: var(--tracking-wide);
  padding: 0.375rem 0.625rem;
  border-radius: var(--radius-pill);
  color: var(--color-text-muted);
  transition: background var(--dur-fast), color var(--dur-fast);
  white-space: nowrap;
}
.lang-switch__item:hover {
  color: var(--color-text-strong);
  text-decoration: none;
}
.lang-switch__item[aria-current="true"] {
  background: var(--color-brand);
  color: var(--color-text-on-brand);
}

/* Mobile Nav Toggle ---------------------------------------------------- */
.nav-toggle {
  display: none;
  background: transparent;
  border: 1px solid var(--color-border-strong);
  border-radius: var(--radius-md);
  width: 2.5rem;
  height: 2.5rem;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  color: var(--color-text-strong);
}
.nav-toggle__bar,
.nav-toggle__bar::before,
.nav-toggle__bar::after {
  content: "";
  display: block;
  width: 18px; height: 2px;
  background: currentColor;
  border-radius: 2px;
  transition: transform var(--dur-base) var(--ease-out), opacity var(--dur-fast);
}
.nav-toggle__bar { position: relative; }
.nav-toggle__bar::before { position: absolute; top: -6px; left: 0; }
.nav-toggle__bar::after  { position: absolute; top:  6px; left: 0; }

[aria-expanded="true"] .nav-toggle__bar { background: transparent; }
[aria-expanded="true"] .nav-toggle__bar::before { transform: translateY(6px) rotate(45deg); }
[aria-expanded="true"] .nav-toggle__bar::after  { transform: translateY(-6px) rotate(-45deg); }

@media (max-width: 980px) {
  .nav-toggle { display: inline-flex; }
  .site-nav {
    position: absolute;
    inset: var(--header-h) 0 auto 0;
    background: var(--color-bg);
    border-bottom: 1px solid var(--color-border);
    padding: var(--space-5) var(--container-pad) var(--space-6);
    flex-direction: column;
    align-items: stretch;
    gap: var(--space-5);
    max-height: calc(100vh - var(--header-h));
    overflow-y: auto;
    transform: translateY(-10px);
    opacity: 0;
    pointer-events: none;
    transition: opacity var(--dur-base), transform var(--dur-base);
  }
  .site-nav[data-open="true"] {
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
  }
  .site-nav__list { flex-direction: column; gap: var(--space-4); }
  .site-nav__link { font-size: var(--fs-base); padding: 0.5rem 0; }
  /* Sprach-Switcher nicht auf volle Drawer-Breite ziehen */
  .site-nav .lang-switch { align-self: flex-start; gap: 0.25rem; padding: 0.375rem; }
  .site-nav .lang-switch__item { padding: 0.625rem 0.875rem; font-size: var(--fs-sm); min-height: 2.5rem; display: inline-flex; align-items: center; }
}

/* Buttons -------------------------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.85rem 1.4rem;
  font-family: var(--font-heading);
  font-weight: var(--fw-semibold);
  font-size: var(--fs-sm);
  letter-spacing: var(--tracking-wide);
  line-height: 1;
  border-radius: var(--radius-md);
  border: 1px solid transparent;
  cursor: pointer;
  text-decoration: none;
  transition: background var(--dur-fast), color var(--dur-fast),
              border-color var(--dur-fast), transform var(--dur-fast);
}
.btn:hover { text-decoration: none; transform: translateY(-1px); }
.btn:active { transform: translateY(0); }

.btn--primary {
  background: var(--color-brand);
  color: var(--color-text-on-brand);
}
.btn--primary:hover { background: var(--color-brand-strong); color: var(--color-text-on-brand); }

.btn--ghost {
  background: transparent;
  color: var(--color-text-strong);
  border-color: var(--color-border-strong);
}
.btn--ghost:hover {
  border-color: var(--color-brand);
  color: var(--color-brand-strong);
}

/* Cards ---------------------------------------------------------------- */
.card {
  background: var(--color-bg-elevated);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  box-shadow: var(--shadow-xs);
  transition: box-shadow var(--dur-base), transform var(--dur-base),
              border-color var(--dur-base);
  min-width: 0;
  overflow-wrap: anywhere;
  word-break: break-word;
}
.card:hover {
  box-shadow: var(--shadow-md);
  border-color: var(--color-border-strong);
  transform: translateY(-2px);
}
.card__icon {
  width: 3rem; height: 3rem;
  display: inline-flex;
  align-items: center; justify-content: center;
  border-radius: var(--radius-md);
  background: var(--color-brand-soft);
  color: var(--color-brand-strong);
  margin-bottom: var(--space-4);
}
.card__icon--solid {
  background: var(--color-brand-strong);
  color: #fff;
}
.card__icon svg {
  width: 60%;
  height: 60%;
}
.card__title {
  font-size: var(--fs-md);
  margin-bottom: var(--space-3);
  overflow-wrap: anywhere;
  word-break: break-word;
}
.card__body  {
  color: var(--color-text);
  margin: 0;
  overflow-wrap: anywhere;
  word-break: break-word;
}

/* Footer --------------------------------------------------------------- */
.site-footer {
  background: var(--color-bg-muted);
  border-top: 1px solid var(--color-border);
  padding-block: var(--space-7) var(--space-5);
  font-size: var(--fs-sm);
  color: var(--color-text-muted);
}
.site-footer__grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr;
  gap: var(--space-6);
  margin-bottom: var(--space-6);
}
@media (max-width: 720px) {
  .site-footer__grid { grid-template-columns: 1fr; }
}
.site-footer h4 {
  font-size: var(--fs-sm);
  text-transform: uppercase;
  letter-spacing: var(--tracking-wide);
  color: var(--color-text-strong);
  margin-bottom: var(--space-4);
}
.site-footer a { color: var(--color-text); }
.site-footer a:hover { color: var(--color-brand-strong); }
.site-footer__bottom {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: var(--space-3);
  padding-top: var(--space-5);
  border-top: 1px solid var(--color-border);
}

/* --- Utility classes (extracted from inline styles for strict CSP) --- */
.contact-form__title { margin-top: 0; }
.site-footer__brand  { margin-bottom: var(--space-3); }
.svg-sprite-defs     { position: absolute; width: 0; height: 0; overflow: hidden; }

/* =========================================================================
   Sticky Contact FAB (Extended Floating Action Button)
   - Material-3 inspirierte Pill rechts unten, mit Icon + Label
   - Erscheint nach Scroll-Threshold (siehe main.js)
   - Versteckt sich automatisch wenn Kontakt-Sektion im Viewport
   - Respektiert iOS Safe-Area-Inset (Home-Indicator, Notch)
   - Schwebt über Content -> kein Body-Padding nötig
   ========================================================================= */

/* Smooth-Scroll-Ziel am Kontaktformular ohne Header-Überlappung */
#kontakt-form {
  scroll-margin-top: 1.5rem;
}

.contact-fab {
  /* Positionierung */
  position: fixed;
  right: calc(1.25rem + env(safe-area-inset-right, 0px));
  bottom: calc(1.25rem + env(safe-area-inset-bottom, 0px));
  z-index: var(--z-overlay);

  /* Layout: Pill mit Icon + Label */
  display: inline-flex;
  align-items: center;
  gap: 0.625rem;
  min-height: 3.5rem;
  padding: 0 1.375rem 0 1.125rem;

  /* Typografie */
  font-family: var(--font-heading);
  font-weight: var(--fw-semibold);
  font-size: 0.9375rem;
  letter-spacing: 0.01em;
  white-space: nowrap;
  text-decoration: none;

  /* Premium-Look: Gradient + Layered Shadow mit Brand-Glow */
  color: var(--color-text-on-brand);
  background: linear-gradient(135deg, var(--color-brand) 0%, var(--color-brand-strong) 100%);
  border: none;
  border-radius: var(--radius-pill);
  box-shadow:
    0 1px 2px rgba(15, 23, 42, 0.10),
    0 6px 16px rgba(0, 144, 201, 0.32),
    0 12px 32px rgba(0, 144, 201, 0.18);

  /* Initial versteckt — JS togglet .is-visible nach Scroll-Threshold */
  opacity: 0;
  transform: translateY(140%) scale(0.92);
  transition:
    opacity         var(--dur-base) var(--ease-out),
    transform       var(--dur-slow) var(--ease-bounce),
    box-shadow      var(--dur-base) var(--ease-out),
    background      var(--dur-fast) var(--ease-out);

  -webkit-tap-highlight-color: transparent;
  cursor: pointer;
}

.contact-fab.is-visible {
  opacity: 1;
  transform: translateY(0) scale(1);
}

.contact-fab.is-hidden {
  opacity: 0;
  transform: translateY(140%) scale(0.92);
  pointer-events: none;
}

.contact-fab:hover {
  transform: translateY(-2px) scale(1.02);
  box-shadow:
    0 2px 4px rgba(15, 23, 42, 0.12),
    0 10px 24px rgba(0, 144, 201, 0.42),
    0 20px 44px rgba(0, 144, 201, 0.22);
  color: var(--color-text-on-brand);
  text-decoration: none;
}

.contact-fab:active {
  transform: translateY(0) scale(0.97);
  transition-duration: 80ms;
  box-shadow:
    0 1px 2px rgba(15, 23, 42, 0.10),
    0 4px 10px rgba(0, 144, 201, 0.28);
}

.contact-fab:focus-visible {
  outline: 3px solid #FFD700;
  outline-offset: 3px;
}

.contact-fab__icon {
  width: 1.25rem;
  height: 1.25rem;
  flex-shrink: 0;
}

/* Icon-Wave einmalig beim Erscheinen */
.contact-fab.is-visible .contact-fab__icon {
  animation: fab-icon-wave 700ms var(--ease-out) 400ms 1;
}
@keyframes fab-icon-wave {
  0%, 100% { transform: rotate(0); }
  20%      { transform: rotate(-10deg); }
  60%      { transform: rotate(8deg); }
  80%      { transform: rotate(-3deg); }
}

/* Pulse-Ring 2x beim Erscheinen, dann Ruhe */
.contact-fab.is-visible::before {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  box-shadow: 0 0 0 0 rgba(0, 176, 240, 0.55);
  animation: fab-pulse 1.8s var(--ease-out) 600ms 2;
  pointer-events: none;
}
@keyframes fab-pulse {
  0%   { box-shadow: 0 0 0 0    rgba(0, 176, 240, 0.55); }
  70%  { box-shadow: 0 0 0 16px rgba(0, 176, 240, 0); }
  100% { box-shadow: 0 0 0 0    rgba(0, 176, 240, 0); }
}

/* Mobile-Anpassung */
@media (max-width: 480px) {
  .contact-fab {
    right: calc(1rem + env(safe-area-inset-right, 0px));
    bottom: calc(1rem + env(safe-area-inset-bottom, 0px));
    min-height: 3.25rem;
    padding: 0 1.125rem 0 0.875rem;
    font-size: 0.875rem;
  }
  .contact-fab__icon { width: 1.125rem; height: 1.125rem; }
}

/* Reduced-Motion: alle Animationen aus */
@media (prefers-reduced-motion: reduce) {
  .contact-fab {
    transition: opacity var(--dur-base) linear;
    transform: none !important;
  }
  .contact-fab.is-visible::before { display: none; }
  .contact-fab.is-visible .contact-fab__icon { animation: none; }
  .contact-fab:hover  { transform: none; }
  .contact-fab:active { transform: none; }
}

/* Fallback ohne JS — sofort sichtbar */
.no-js .contact-fab {
  opacity: 1;
  transform: none;
  transition: none;
}

/* Print: ausblenden */
@media print {
  .contact-fab { display: none !important; }
}