/* ==========================================================================
   bern-heizung.ch – Animationen & Effekte
   ========================================================================== */

/* ---- Keyframes ---- */
@keyframes stepIn {
  from { opacity: 0; transform: translateX(14px); }
  to { opacity: 1; transform: translateX(0); }
}

@keyframes popIn {
  0% { opacity: 0; transform: scale(0.5); }
  70% { transform: scale(1.08); }
  100% { opacity: 1; transform: scale(1); }
}

@keyframes fadeUp {
  from { opacity: 0; transform: translateY(24px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes shake {
  0%, 100% { transform: translateX(0); }
  20%, 60% { transform: translateX(-6px); }
  40%, 80% { transform: translateX(6px); }
}

/* ---- Scroll-Reveal ---- */
.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.7s cubic-bezier(0.25, 0.46, 0.45, 0.94),
              transform 0.7s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}
.reveal.is-visible { opacity: 1; transform: translateY(0); }

/* Gestaffelte Verzögerung für Karten-Grids */
.reveal-stagger > * {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.65s ease, transform 0.65s ease;
}
.reveal-stagger.is-visible > * { opacity: 1; transform: translateY(0); }
.reveal-stagger.is-visible > *:nth-child(1) { transition-delay: 0s; }
.reveal-stagger.is-visible > *:nth-child(2) { transition-delay: 0.09s; }
.reveal-stagger.is-visible > *:nth-child(3) { transition-delay: 0.18s; }
.reveal-stagger.is-visible > *:nth-child(4) { transition-delay: 0.27s; }
.reveal-stagger.is-visible > *:nth-child(5) { transition-delay: 0.36s; }
.reveal-stagger.is-visible > *:nth-child(6) { transition-delay: 0.45s; }

/* ---- Hero-Einstieg (ohne Scroll) ---- */
.hero-intro > * { animation: fadeUp 0.7s ease backwards; }
.hero-intro > *:nth-child(1) { animation-delay: 0.05s; }
.hero-intro > *:nth-child(2) { animation-delay: 0.12s; }
.hero-intro > *:nth-child(3) { animation-delay: 0.19s; }
.hero-intro > *:nth-child(4) { animation-delay: 0.26s; }
.hero-intro > *:nth-child(5) { animation-delay: 0.33s; }
.hero-intro > *:nth-child(6) { animation-delay: 0.4s; }

.form-wrap { animation: fadeUp 0.7s ease 0.2s backwards; }

/* ---- Formular-Fehler ---- */
.form-card.is-shaking { animation: shake 0.4s ease; }

/* ---- Reduced Motion ---- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  .reveal, .reveal-stagger > * { opacity: 1; transform: none; }
}