/* ==========================================================================
   Transitions & Animations
   Ōntóφys · The Mirror
   View transitions, directional slides, micro-interactions.
   ========================================================================== */

/* ── Keyframes ──────────────────────────────────────────────────────────── */

@keyframes fadeIn {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

@keyframes slideUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes slideFromLeft {
  from {
    opacity: 0;
    transform: translateX(-30px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes slideFromRight {
  from {
    opacity: 0;
    transform: translateX(30px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes gentlePulse {
  0%, 100% {
    opacity: 0.5;
  }
  50% {
    opacity: 0.8;
  }
}

/* ── View enter transition (default: slide up) ─────────────────────────── */

.view.active {
  animation: slideUp var(--duration-view) var(--ease-out) both;
}

/* ── Directional slide (question-to-question) ──────────────────────────── */

.view.active.slide-left {
  animation: slideFromLeft var(--duration-view) var(--ease-out) both;
}

.view.active.slide-right {
  animation: slideFromRight var(--duration-view) var(--ease-out) both;
}

/* ── View exit (JS removes .active — these are for JS-driven transitions)  */
/* Applied momentarily before hiding the view                               */

.view.exiting {
  animation: none;
  transition:
    opacity var(--duration-normal) var(--ease-default),
    transform var(--duration-normal) var(--ease-default);
  opacity: 0;
  transform: translateY(-10px);
  pointer-events: none;
}

.view.exiting.slide-left {
  transform: translateX(30px);
}

.view.exiting.slide-right {
  transform: translateX(-30px);
}

/* ── Button hover / press ───────────────────────────────────────────────── */

.btn {
  transition:
    background-color var(--duration-slow) ease,
    color var(--duration-slow) ease,
    box-shadow var(--duration-slow) ease,
    transform var(--duration-slow) ease,
    border-color var(--duration-slow) ease,
    opacity var(--duration-slow) ease;
}

.btn:active {
  transition-duration: var(--duration-fast);
}

/* ── Textarea focus glow ────────────────────────────────────────────────── */

.textarea {
  transition:
    border-color var(--duration-slow) ease,
    box-shadow var(--duration-slow) ease;
}

/* ── Input focus glow ───────────────────────────────────────────────────── */

.input-email {
  transition:
    border-color var(--duration-slow) ease,
    box-shadow var(--duration-slow) ease;
}

/* ── Progress bar fill ──────────────────────────────────────────────────── */

.progress-fill {
  transition: width var(--duration-slow) ease;
}

/* ── Error message ──────────────────────────────────────────────────────── */

.error-message {
  transition:
    opacity var(--duration-normal) ease,
    max-height var(--duration-normal) ease;
}

/* ── Language toggle ────────────────────────────────────────────────────── */

.lang-btn {
  transition:
    color var(--duration-fast) ease,
    background-color var(--duration-fast) ease;
}

/* ── Stagger children (landing page elements) ──────────────────────────── */

#view-landing.active > * {
  animation: slideUp var(--duration-view) var(--ease-out) both;
}

#view-landing.active > *:nth-child(1) {
  animation-delay: 0ms;
}

#view-landing.active > *:nth-child(2) {
  animation-delay: 80ms;
}

#view-landing.active > *:nth-child(3) {
  animation-delay: 160ms;
}

#view-landing.active > *:nth-child(4) {
  animation-delay: 240ms;
}

#view-landing.active > *:nth-child(5) {
  animation-delay: 320ms;
}

/* ── Confirmation icon gentle pulse ─────────────────────────────────────── */

#view-confirmation .confirmation-icon {
  animation: gentlePulse 3s ease-in-out infinite;
}

/* ── Reduced motion ─────────────────────────────────────────────────────── */

@media (prefers-reduced-motion: reduce) {

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }

  .view.active,
  .view.active.slide-left,
  .view.active.slide-right {
    animation: none;
    opacity: 1;
    transform: none;
  }

  .view.exiting {
    transition: none;
  }
}