/* Login ambient hero: full-bleed motion + sheen (distinct from home constellation / sweep). */

/* Body gradient alone sat behind the header; canvas was only inside .form-holder. Fixed backdrop = same treatment under the nav. */
body.login-ambient-page {
  background: transparent !important;
}

body.login-ambient-page main.main {
  position: relative;
  z-index: 1;
  background: transparent !important;
}

body.login-ambient-page #site-footer {
  position: relative;
  z-index: 1;
}

.login-viewport-backdrop {
  position: fixed;
  inset: 0;
  /* iOS / Chrome mobile: inset + percentage-sized canvas can report 0×0 before paint; match visual viewport */
  width: 100%;
  min-height: 100vh;
  min-height: 100dvh;
  z-index: 0;
  pointer-events: none;
  overflow: hidden;
}

.login-viewport-backdrop__base {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    135deg,
    var(--primary-color, #6b21a8) 0%,
    var(--secondary-color, #be185d) 100%
  );
  z-index: 0;
}

.login-viewport-backdrop .login-ambient-canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  z-index: 1;
  pointer-events: none;
}

.login-viewport-backdrop .login-ambient-sheen {
  position: absolute;
  inset: 0;
  z-index: 2;
  pointer-events: none;
  mix-blend-mode: soft-light;
  opacity: 0.9;
  background: linear-gradient(
    118deg,
    transparent 18%,
    rgba(255, 210, 255, 0.14) 42%,
    rgba(200, 220, 255, 0.1) 58%,
    transparent 82%
  );
  background-size: 220% 220%;
  animation: loginAmbientSheen 28s ease-in-out infinite alternate;
}

/* Transparent header so the fixed backdrop reads through */
body.login-ambient-page #site-header {
  background: transparent !important;
  box-shadow: none !important;
}

body.login-ambient-page #site-header.on-scroll {
  background: transparent !important;
  backdrop-filter: none !important;
  -webkit-backdrop-filter: none !important;
}

body.login-ambient-page #site-header .top-bar {
  background: transparent !important;
}

body.login-ambient-page #site-header .navbar {
  background: transparent !important;
  box-shadow: none !important;
}

body.login-ambient-page #site-header .navbar-nav .nav-link {
  text-shadow: 0 1px 2px rgba(0, 0, 0, 0.35);
}

body.login-ambient-page #site-header .navbar-brand {
  filter: drop-shadow(0 2px 8px rgba(0, 0, 0, 0.25));
}

.form-holder.form-holder--login-ambient {
  position: relative;
  z-index: 1;
  overflow: visible;
}

/* register.css ::before duplicates the full-area gradient; hide on login so we do not stack two slabs */
body.login-ambient-page .form-holder.form-holder--login-ambient::before {
  opacity: 0 !important;
  pointer-events: none;
}

@keyframes loginAmbientSheen {
  0% {
    background-position: 0% 40%;
  }
  100% {
    background-position: 100% 60%;
  }
}

.form-holder.form-holder--login-ambient::after {
  opacity: 0.06;
}

.form-holder.form-holder--login-ambient .page-title {
  animation: loginTitleEnter 1.1s cubic-bezier(0.22, 1, 0.36, 1) forwards;
}

@keyframes loginTitleEnter {
  from {
    opacity: 0;
    transform: translateY(14px);
    filter: blur(8px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
    filter: blur(0);
  }
}

.form-holder.form-holder--login-ambient .page-subtitle {
  animation: loginSubtitleEnter 1s ease 0.12s forwards;
  opacity: 0;
}

@keyframes loginSubtitleEnter {
  to {
    opacity: 0.95;
  }
}

@media (prefers-reduced-motion: reduce) {
  .login-ambient-sheen {
    animation: none;
    opacity: 0.55;
  }

  .form-holder.form-holder--login-ambient .page-title,
  .form-holder.form-holder--login-ambient .page-subtitle {
    animation: none;
    opacity: 1;
    transform: none;
    filter: none;
  }
}