/* Pre-paint hide for tiles when boot will run, applied by inline <script>.
   Prevents flash before js/boot.js executes. */
html.boot-pending .tile {
  opacity: 0;
  pointer-events: none;
  transform: translateY(30px);
  transition: none !important;
}
html:not(.boot-pending) #boot-overlay { display: none; }

/* --- Overlay shell --- */
#boot-overlay {
  position: fixed;
  inset: 0;
  z-index: 10000;
  background: var(--bg-base);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  opacity: 1;
  transition: opacity 200ms var(--ease-smooth);
}

#boot-overlay::before {
  content: '';
  position: absolute;
  inset: 0;
  pointer-events: none;
  background:
    radial-gradient(ellipse 80% 50% at 50% 50%, rgba(16, 185, 129, 0.05), transparent 60%),
    radial-gradient(ellipse 120% 80% at 50% 120%, rgba(0, 0, 0, 0.55), transparent 55%);
}

#boot-overlay::after {
  /* CRT-ish horizontal lines, very subtle */
  content: '';
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image: repeating-linear-gradient(
    180deg,
    transparent 0px,
    transparent 2px,
    rgba(255, 255, 255, 0.02) 3px,
    transparent 4px
  );
  opacity: 0.6;
}

/* Scanline sweep */
.boot-overlay__scanline {
  position: absolute;
  left: 0;
  right: 0;
  top: 0;
  height: 100%;
  pointer-events: none;
  opacity: 0;
  transform: translateY(-100%);
  background: linear-gradient(180deg,
    transparent 0%,
    transparent 46%,
    rgba(255, 255, 255, 0.04) 48%,
    rgba(232, 235, 237, 0.9) 50%,
    rgba(16, 185, 129, 0.35) 50.5%,
    rgba(255, 255, 255, 0.04) 52%,
    transparent 54%,
    transparent 100%);
  mix-blend-mode: screen;
}
#boot-overlay.boot-overlay--phase1 .boot-overlay__scanline {
  animation: boot-scanline 300ms 250ms cubic-bezier(0.22, 1, 0.36, 1) both;
}
@keyframes boot-scanline {
  0%   { opacity: 0;   transform: translateY(-100%); }
  12%  { opacity: 1; }
  88%  { opacity: 1; }
  100% { opacity: 0;   transform: translateY(100%); }
}

/* Center content */
.boot-overlay__inner {
  position: relative;
  z-index: 2;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
  transition: opacity 200ms var(--ease-smooth), transform 200ms var(--ease-smooth);
}

.boot-overlay__eyebrow {
  font-family: 'JetBrains Mono', monospace;
  font-size: var(--fs-mono-xs);
  letter-spacing: 0.45em;
  text-transform: uppercase;
  color: var(--accent);
  opacity: 0;
  display: inline-flex;
  align-items: center;
  gap: 12px;
}
.boot-overlay__eyebrow::before,
.boot-overlay__eyebrow::after {
  content: '';
  display: inline-block;
  width: 28px;
  height: 1px;
  background: var(--accent-dim);
}
#boot-overlay.boot-overlay--phase1 .boot-overlay__eyebrow {
  animation: boot-fade-in 300ms 350ms cubic-bezier(0.22, 1, 0.36, 1) both;
}

.boot-overlay__logo {
  font-family: 'Outfit', sans-serif;
  font-size: clamp(2.5rem, 7vw, 5.25rem);
  font-weight: 800;
  letter-spacing: -0.04em;
  color: var(--text-primary);
  text-align: center;
  margin: 0;
  opacity: 0;
  line-height: 1;
}
#boot-overlay.boot-overlay--phase1 .boot-overlay__logo {
  animation: boot-logo-in 400ms 500ms cubic-bezier(0.22, 1, 0.36, 1) both;
}
@keyframes boot-logo-in {
  from { opacity: 0; transform: translateY(8px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* Green accent line, drawn left→right */
.boot-overlay__accent {
  width: 140px;
  height: 2px;
  background: var(--accent);
  box-shadow: 0 0 14px var(--accent-dim);
  transform: scaleX(0);
  transform-origin: left center;
  margin-top: 6px;
}
#boot-overlay.boot-overlay--phase1 .boot-overlay__accent {
  animation: boot-accent-in 300ms 900ms cubic-bezier(0.22, 1, 0.36, 1) both;
}
@keyframes boot-accent-in {
  to { transform: scaleX(1); }
}

/* PRESS START */
.boot-overlay__press {
  margin-top: 40px;
  font-family: 'JetBrains Mono', monospace;
  font-size: var(--fs-mono-sm);
  letter-spacing: 0.42em;
  color: var(--text-secondary);
  text-transform: uppercase;
  opacity: 0;
  display: inline-flex;
  align-items: center;
  gap: 10px;
}
.boot-overlay__press-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 12px var(--accent);
  display: inline-block;
}
#boot-overlay.boot-overlay--phase1 .boot-overlay__press {
  animation:
    boot-fade-in 200ms 1400ms cubic-bezier(0.22, 1, 0.36, 1) both,
    boot-press-pulse 1.4s 1600ms cubic-bezier(0.22, 1, 0.36, 1) infinite;
}
@keyframes boot-press-pulse {
  0%, 100% { opacity: 1; }
  50%      { opacity: 0.35; }
}

@keyframes boot-fade-in {
  from { opacity: 0; }
  to   { opacity: 1; }
}

/* Skip button — bottom right */
.boot-overlay__skip {
  position: absolute;
  right: 40px;
  bottom: 40px;
  font-family: 'JetBrains Mono', monospace;
  font-size: var(--fs-mono-xs);
  letter-spacing: 0.3em;
  color: var(--text-muted);
  background: transparent;
  border: 1px solid var(--border-hairline);
  padding: 10px 16px;
  text-transform: uppercase;
  display: inline-flex;
  gap: 10px;
  align-items: center;
  cursor: pointer;
  opacity: 0;
  z-index: 3;
  transition:
    color 200ms var(--ease-smooth),
    border-color 200ms var(--ease-smooth),
    background 200ms var(--ease-smooth);
}
.boot-overlay__skip svg {
  width: 12px;
  height: 12px;
}
#boot-overlay.boot-overlay--phase1 .boot-overlay__skip {
  animation: boot-fade-in 220ms 1400ms cubic-bezier(0.22, 1, 0.36, 1) both;
}
.boot-overlay__skip:hover,
.boot-overlay__skip:focus-visible {
  color: var(--accent);
  border-color: var(--accent-dim);
  background: rgba(16, 185, 129, 0.04);
  outline: none;
}

/* Corner brackets inside overlay (small decoration) */
.boot-overlay__bracket {
  position: absolute;
  width: 24px;
  height: 24px;
  border: 1px solid var(--accent-dim);
  opacity: 0;
}
.boot-overlay__bracket--tl { top: 40px; left: 40px; border-right: none; border-bottom: none; }
.boot-overlay__bracket--tr { top: 40px; right: 40px; border-left: none; border-bottom: none; }
.boot-overlay__bracket--bl { bottom: 40px; left: 40px; border-right: none; border-top: none; }
.boot-overlay__bracket--br { bottom: 40px; right: 40px; border-left: none; border-top: none; }
#boot-overlay.boot-overlay--phase1 .boot-overlay__bracket {
  animation: boot-fade-in 400ms 200ms cubic-bezier(0.22, 1, 0.36, 1) both;
}

/* Exit */
#boot-overlay.boot-overlay--exit {
  opacity: 0;
  pointer-events: none;
}
#boot-overlay.boot-overlay--exit .boot-overlay__inner {
  transform: translateY(-12px);
  opacity: 0;
}

/* --- Tile cascade --- */
body.is-booting .tile {
  opacity: 0;
  pointer-events: none;
  transform: translateY(30px);
  transition: none;
}

body.boot-cascading .tile {
  opacity: 0;
  pointer-events: none;
  transform: translateY(30px);
  transition:
    opacity 300ms cubic-bezier(0.22, 1, 0.36, 1),
    transform 300ms cubic-bezier(0.34, 1.56, 0.64, 1);
}
body.boot-cascading .tile.boot-tile-enter {
  opacity: 1;
  transform: translateY(0);
  pointer-events: auto;
}

/* --- Quick reveal for return visitors / mobile --- */
body.boot-quick .tile {
  animation: boot-tiles-quick 150ms cubic-bezier(0.22, 1, 0.36, 1) both;
}
@keyframes boot-tiles-quick {
  from { opacity: 0; transform: translateY(6px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* --- Instant (reduced motion) --- */
body.boot-instant .tile {
  opacity: 1;
  transform: none;
}

@media (max-width: 768px) {
  .boot-overlay__skip   { right: 20px; bottom: 20px; padding: 8px 12px; }
  .boot-overlay__accent { width: 90px; }
  .boot-overlay__bracket--tl,
  .boot-overlay__bracket--tr { top: 20px; }
  .boot-overlay__bracket--bl,
  .boot-overlay__bracket--br { bottom: 20px; }
  .boot-overlay__bracket--tl,
  .boot-overlay__bracket--bl { left: 20px; }
  .boot-overlay__bracket--tr,
  .boot-overlay__bracket--br { right: 20px; }
}

@media (prefers-reduced-motion: reduce) {
  #boot-overlay,
  #boot-overlay * {
    animation: none !important;
    transition: none !important;
  }
}