/* Lightweight motion — transform/opacity only */

/* Default visible (no blank page if JS/IO fails). Only hide when html.js is set. */
.reveal {
  opacity: 1;
  transform: none;
}

html.js .reveal {
  opacity: 0;
  transform: translateY(18px);
  transition:
    opacity var(--dur-slow) var(--ease),
    transform var(--dur-slow) var(--ease);
}

html.js .reveal.is-in,
.reveal.is-in {
  opacity: 1;
  transform: none;
}

.reveal-delay-1 { transition-delay: 60ms; }
.reveal-delay-2 { transition-delay: 120ms; }
.reveal-delay-3 { transition-delay: 180ms; }
.reveal-delay-4 { transition-delay: 240ms; }

.hero-glow {
  position: absolute;
  inset: 0;
  pointer-events: none;
  background:
    radial-gradient(ellipse 80% 60% at 20% 0%, rgba(16, 163, 127, 0.18) 0%, transparent 55%),
    radial-gradient(ellipse 60% 50% at 85% 18%, rgba(99, 102, 241, 0.1) 0%, transparent 50%);
  animation: glow-drift 14s var(--ease) infinite alternate;
}

.hero-grid {
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.03) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.55) 0%, transparent 88%);
  -webkit-mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.55) 0%, transparent 88%);
}

@keyframes glow-drift {
  from { transform: translate3d(0, 0, 0) scale(1); }
  to { transform: translate3d(1.5%, -1%, 0) scale(1.03); }
}

.scroll-progress {
  position: fixed;
  top: 0;
  right: 0;
  width: 2px;
  height: 100vh;
  z-index: 60;
  pointer-events: none;
  background: transparent;
}

.scroll-progress__bar {
  width: 100%;
  height: 0%;
  background: var(--accent);
  transform-origin: top;
  transition: height 80ms linear;
}

.login-overlay {
  position: fixed;
  inset: 0;
  z-index: 80;
  display: grid;
  place-items: center;
  padding: 24px;
  background: rgba(0, 0, 0, 0.55);
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--dur) var(--ease);
}

.login-overlay.is-open {
  opacity: 1;
  pointer-events: auto;
}

.login-overlay__panel {
  width: min(920px, 100%);
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  background: var(--bg-elevated);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-float);
  transform: translateY(16px) scale(0.985);
  opacity: 0;
  transition:
    transform var(--dur-slow) var(--ease),
    opacity var(--dur-slow) var(--ease);
}

.login-overlay.is-open .login-overlay__panel {
  transform: none;
  opacity: 1;
}

.site-shell.is-login-exit {
  transform: scale(0.985);
  filter: blur(4px);
  opacity: 0.55;
  transition:
    transform var(--dur) var(--ease),
    filter var(--dur) var(--ease),
    opacity var(--dur) var(--ease);
  pointer-events: none;
}

.form-success {
  display: none;
  align-items: center;
  gap: 10px;
  margin-top: 12px;
  padding: 12px 14px;
  border-radius: var(--radius);
  border: 1px solid rgba(16, 163, 127, 0.35);
  background: var(--accent-soft);
  color: var(--accent-hover);
  font-size: 14px;
  transform: translateY(6px);
  opacity: 0;
}

.form-success.is-show {
  display: flex;
  animation: success-in var(--dur) var(--ease) forwards;
}

@keyframes success-in {
  to {
    opacity: 1;
    transform: none;
  }
}

@media (max-width: 820px) {
  .login-overlay__panel {
    grid-template-columns: 1fr;
  }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }

  .reveal,
  .reveal.is-in,
  .hero-glow,
  .login-overlay,
  .login-overlay__panel,
  .site-shell,
  .site-shell.is-login-exit,
  .form-success {
    animation: none !important;
    transition: none !important;
    filter: none !important;
    transform: none !important;
    opacity: 1 !important;
  }

  html.js .reveal,
  .reveal { opacity: 1; transform: none; }

  .scroll-cue__beam,
  .scroll-cue__chev,
  .phantom__orb,
  .phantom__word {
    animation: none !important;
  }
}