/*
 * Splash screen i animacje wejścia — wyłącznie ekran `/logowanie`.
 * Dołączane w `pages/security/login.html.twig`, nie w `base_auth.html.twig`.
 */

:root {
  --login-ease: cubic-bezier(.22, .61, .36, 1);
  --login-rise: 18px;
}

/* dopóki splash pracuje, treść pod spodem nie może zostać przewinięta */
.login-splash-active {
  overflow: hidden;
}

.login-splash {
  position: fixed;
  z-index: 100;
  inset: 0;
  display: grid;
  place-items: center;
  background: var(--zpd-bg-inverse);
  transition: opacity .55s var(--login-ease), visibility .55s;
}

.login-splash::after {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 50% 45%, color-mix(in srgb, var(--zpd-color-leaf-500) 24%, transparent), transparent 62%);
  opacity: 0;
  animation: login-glow 2.4s var(--login-ease) infinite;
}

.login-splash[hidden] {
  display: none;
}

.login-splash--done {
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
}

.login-splash__inner {
  position: relative;
  z-index: 1;
  display: grid;
  justify-items: center;
  gap: 30px;
  padding: 24px;
}

/* logo jest ciemne (jak w `.auth-brand`), więc na ciemnym tle odwracamy je do bieli */
.login-splash__logo {
  width: clamp(180px, 34vw, 240px);
  height: auto;
  filter: invert(1);
  animation: login-logo-in .7s var(--login-ease) both;
}

.login-splash__bar {
  overflow: hidden;
  width: 148px;
  height: 3px;
  background: color-mix(in srgb, var(--zpd-text-on-inverse) 16%, transparent);
  border-radius: 999px;
  animation: login-fade-up .6s var(--login-ease) .16s both;
}

.login-splash__bar span {
  display: block;
  width: 40%;
  height: 100%;
  background: var(--zpd-color-leaf-400);
  border-radius: inherit;
  animation: login-sweep 1.25s var(--login-ease) infinite;
}

/*
 * Animacje wejścia treści. Startują dopiero po zdjęciu splasha
 * (`.login-ready` na `<body>`), żeby nie odegrały się „pod” overlayem —
 * do tego czasu strona pod spodem jest przezroczysta.
 */
.login-splash-active .auth-page {
  opacity: 0;
}

.login-ready .auth-page {
  opacity: 1;
}

/* kolumna boczna wjeżdża jako całość, jej treść dodatkowo stagguje */
.login-ready .auth-aside {
  animation: login-aside-in 1.1s var(--login-ease) both;
}

.login-ready .auth-aside::before {
  animation: login-veil-in 1.4s var(--login-ease) .2s both;
}

.login-ready .auth-aside > .auth-brand,
.login-ready .auth-aside__eyebrow,
.login-ready .auth-aside h2,
.login-ready .auth-aside__text,
.login-ready .auth-aside__footer {
  animation: login-fade-up .9s var(--login-ease) both;
}

.login-ready .auth-aside > .auth-brand { animation-delay: .18s; }
.login-ready .auth-aside__eyebrow { animation-delay: .3s; }
.login-ready .auth-aside h2 { animation-delay: .38s; }
.login-ready .auth-aside__text { animation-delay: .48s; }
.login-ready .auth-aside__footer { animation-delay: .58s; }

.login-ready .auth-card {
  animation: login-card-in .9s var(--login-ease) both;
}

.login-ready .auth-card > * {
  animation: login-fade-up .8s var(--login-ease) both;
}

.login-ready .auth-card > :nth-child(1) { animation-delay: .16s; }
.login-ready .auth-card > :nth-child(2) { animation-delay: .24s; }
.login-ready .auth-card > :nth-child(3) { animation-delay: .32s; }
.login-ready .auth-card > :nth-child(4) { animation-delay: .4s; }
.login-ready .auth-card > :nth-child(5) { animation-delay: .48s; }

/* pola formularza po kolei — `.auth-form` to grid, więc dzieci są w DOM-owej kolejności */
.login-ready .auth-form > * {
  animation: login-fade-up .7s var(--login-ease) both;
}

.login-ready .auth-form > :nth-child(1) { animation-delay: .46s; }
.login-ready .auth-form > :nth-child(2) { animation-delay: .54s; }
.login-ready .auth-form > :nth-child(3) { animation-delay: .62s; }
.login-ready .auth-form > :nth-child(4) { animation-delay: .7s; }
.login-ready .auth-form > :nth-child(5) { animation-delay: .78s; }
.login-ready .auth-form > :nth-child(6) { animation-delay: .86s; }

@keyframes login-fade-up {
  from {
    opacity: 0;
    transform: translateY(var(--login-rise));
  }

  to {
    opacity: 1;
    transform: none;
  }
}

@keyframes login-card-in {
  from {
    opacity: 0;
    transform: translateY(26px) scale(.985);
  }

  to {
    opacity: 1;
    transform: none;
  }
}

@keyframes login-aside-in {
  from {
    opacity: 0;
    transform: scale(1.06);
  }

  to {
    opacity: 1;
    transform: none;
  }
}

@keyframes login-veil-in {
  from {
    opacity: 0;
  }

  to {
    opacity: 1;
  }
}

@keyframes login-logo-in {
  from {
    opacity: 0;
    transform: translateY(8px) scale(.96);
  }

  to {
    opacity: 1;
    transform: none;
  }
}

@keyframes login-glow {
  0%, 100% {
    opacity: .25;
  }

  50% {
    opacity: .6;
  }
}

@keyframes login-sweep {
  0% {
    transform: translateX(-110%);
  }

  100% {
    transform: translateX(310%);
  }
}

@media (prefers-reduced-motion: reduce) {
  .login-splash,
  .login-splash::after,
  .login-splash__logo,
  .login-splash__bar,
  .login-splash__bar span,
  .login-ready .login-reveal,
  .login-ready .auth-aside,
  .login-ready .auth-aside::before,
  .login-ready .auth-card,
  .login-ready .auth-card > *,
  .login-ready .auth-form > * {
    animation: none !important;
    opacity: 1;
    transform: none;
  }

  .login-splash {
    transition: none;
  }
}
