/* doom-entrance@1 — cinematic DooMChaT Intelligence front door
   Palette: vanta #000 · cobalt #0047AB · uranium #E1FF00 · frosted glass
   Sibling overlay on body; does not touch #app React mount. */

:root {
  --de-void: #000000;
  --de-cobalt: #0047AB;
  --de-cobalt-hot: #3d8cff;
  --de-uranium: #E1FF00;
  --de-uranium-dim: #a8c400;
  --de-ink: #e8eef8;
  --de-muted: #7a8aa8;
  --de-ember: rgb(180 40 20 / 0.18);
  --de-glass: rgb(0 12 36 / 0.55);
  --de-glass-border: rgb(0 71 171 / 0.55);
}

#doom-entrance {
  position: fixed;
  inset: 0;
  z-index: 100000;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  background: var(--de-void);
  color: var(--de-ink);
  font-family: "Sora", system-ui, sans-serif;
  -webkit-font-smoothing: antialiased;
  opacity: 1;
  transition: opacity 0.55s ease, visibility 0.55s ease;
  visibility: visible;
  pointer-events: auto;
}

#doom-entrance.de-exit {
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
}

#doom-entrance.de-skip {
  display: none !important;
}

/* --- Layers --- */
.de-bg {
  position: absolute;
  inset: 0;
  pointer-events: none;
  background:
    radial-gradient(ellipse 90% 60% at 50% -5%, rgb(0 71 171 / 0.28), transparent 55%),
    radial-gradient(ellipse 50% 40% at 15% 85%, var(--de-ember), transparent 50%),
    radial-gradient(ellipse 40% 35% at 90% 70%, rgb(0 71 171 / 0.15), transparent 50%),
    #000;
}

.de-veins {
  position: absolute;
  inset: 0;
  pointer-events: none;
  opacity: 0.55;
  background:
    linear-gradient(115deg, transparent 40%, rgb(0 71 171 / 0.35) 50%, transparent 60%),
    linear-gradient(245deg, transparent 35%, rgb(61 140 255 / 0.18) 48%, transparent 58%),
    repeating-linear-gradient(
      90deg,
      transparent 0,
      transparent 48px,
      rgb(0 71 171 / 0.07) 48px,
      rgb(0 71 171 / 0.07) 49px
    );
  animation: de-vein-pulse 6s ease-in-out infinite;
}

.de-hazard {
  position: absolute;
  left: 0;
  right: 0;
  height: 28px;
  pointer-events: none;
  background: repeating-linear-gradient(
    -45deg,
    #000 0 10px,
    var(--de-uranium) 10px 20px
  );
  box-shadow: 0 0 24px rgb(225 255 0 / 0.35);
  opacity: 0.92;
}
.de-hazard--top { top: 0; }
.de-hazard--bottom { bottom: 0; }

.de-chevrons {
  position: absolute;
  inset: 0;
  pointer-events: none;
  overflow: hidden;
}
.de-chevrons::before,
.de-chevrons::after {
  content: "";
  position: absolute;
  width: 220px;
  height: 220px;
  border: 3px solid transparent;
  border-top-color: var(--de-uranium);
  border-right-color: var(--de-uranium);
  opacity: 0.55;
  filter: drop-shadow(0 0 12px rgb(225 255 0 / 0.45));
  animation: de-chevron-spin 14s linear infinite;
}
.de-chevrons::before {
  top: 12%;
  left: 6%;
  transform: rotate(45deg);
}
.de-chevrons::after {
  bottom: 14%;
  right: 7%;
  transform: rotate(225deg);
  animation-direction: reverse;
  opacity: 0.4;
}

.de-scanlines {
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: repeating-linear-gradient(
    0deg,
    transparent 0,
    transparent 2px,
    rgb(225 255 0 / 0.028) 2px,
    rgb(225 255 0 / 0.028) 3px
  );
  mix-blend-mode: overlay;
  opacity: 0.85;
}

.de-vignette {
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: radial-gradient(ellipse 70% 65% at 50% 50%, transparent 40%, rgb(0 0 0 / 0.75) 100%);
}

.de-noise {
  position: absolute;
  inset: 0;
  pointer-events: none;
  opacity: 0.04;
  mix-blend-mode: overlay;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

/* --- HUD card --- */
.de-hud {
  position: relative;
  z-index: 2;
  width: min(92vw, 560px);
  padding: 2.25rem 2rem 1.85rem;
  text-align: center;
  background: var(--de-glass);
  border: 1px solid var(--de-glass-border);
  border-radius: 18px;
  backdrop-filter: blur(22px) saturate(1.4);
  -webkit-backdrop-filter: blur(22px) saturate(1.4);
  box-shadow:
    0 0 0 1px rgb(225 255 0 / 0.08),
    0 28px 100px rgb(0 0 0 / 0.85),
    0 0 60px rgb(0 71 171 / 0.35),
    inset 0 1px 0 rgb(255 255 255 / 0.06);
  animation: de-hud-in 0.7s cubic-bezier(0.22, 1, 0.36, 1) both;
}

.de-hud::before {
  content: "";
  position: absolute;
  top: 0;
  left: 12%;
  right: 12%;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--de-uranium), transparent);
  opacity: 0.7;
  box-shadow: 0 0 16px rgb(225 255 0 / 0.5);
}

.de-wordmark {
  margin: 0;
  font-family: "Big Shoulders Display", Impact, sans-serif;
  font-weight: 700;
  font-size: clamp(3.2rem, 12vw, 5.5rem);
  letter-spacing: 0.06em;
  line-height: 0.95;
  text-transform: none;
  color: var(--de-ink);
  text-shadow:
    0 0 40px rgb(0 71 171 / 0.7),
    0 0 2px rgb(225 255 0 / 0.35),
    0 4px 0 rgb(0 0 0 / 0.8);
}

.de-wordmark span.de-accent {
  color: var(--de-uranium);
  text-shadow:
    0 0 28px rgb(225 255 0 / 0.55),
    0 0 60px rgb(225 255 0 / 0.25);
}

.de-subtitle {
  margin: 0.85rem 0 0;
  font-family: "IBM Plex Mono", ui-monospace, monospace;
  font-size: clamp(0.65rem, 2.2vw, 0.78rem);
  font-weight: 500;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  color: var(--de-cobalt-hot);
  text-shadow: 0 0 20px rgb(0 71 171 / 0.6);
}

.de-tagline {
  margin: 1.15rem auto 0;
  max-width: 28rem;
  font-size: 0.78rem;
  line-height: 1.45;
  color: var(--de-muted);
  letter-spacing: 0.02em;
}

.de-cta-wrap {
  margin-top: 1.65rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.35rem;
}

.de-enter {
  appearance: none;
  cursor: pointer;
  border: none;
  padding: 0.95rem 2.4rem;
  font-family: "Big Shoulders Display", Impact, sans-serif;
  font-weight: 700;
  font-size: 1.35rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: #000;
  background: var(--de-uranium);
  border-radius: 8px;
  box-shadow:
    0 0 0 1px rgb(225 255 0 / 0.9),
    0 0 36px rgb(225 255 0 / 0.45),
    0 8px 24px rgb(0 0 0 / 0.5);
  transition: transform 0.15s ease, box-shadow 0.2s ease, filter 0.15s ease;
}
.de-enter:hover,
.de-enter:focus-visible {
  outline: none;
  transform: translateY(-2px) scale(1.02);
  filter: brightness(1.05);
  box-shadow:
    0 0 0 1px rgb(225 255 0 / 1),
    0 0 48px rgb(225 255 0 / 0.65),
    0 12px 28px rgb(0 0 0 / 0.55);
}
.de-enter:active {
  transform: translateY(0) scale(0.98);
}

/* OWNER COPY LOCK — exact small text under primary Enter */
.doom-entrance-ask-y {
  margin: 0.2rem 0 0;
  font-family: "IBM Plex Mono", ui-monospace, monospace;
  font-size: 0.68rem;
  font-weight: 400;
  letter-spacing: 0.04em;
  text-transform: lowercase;
  color: rgb(0 71 171 / 0.85);
  opacity: 0.9;
}

.de-links {
  margin-top: 1.35rem;
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.75rem 1.25rem;
}

.de-link {
  font-family: "IBM Plex Mono", ui-monospace, monospace;
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  text-decoration: none;
  color: var(--de-cobalt-hot);
  border-bottom: 1px solid rgb(0 71 171 / 0.4);
  padding-bottom: 2px;
  transition: color 0.15s ease, border-color 0.15s ease, text-shadow 0.15s ease;
}
.de-link:hover,
.de-link:focus-visible {
  color: var(--de-uranium);
  border-bottom-color: var(--de-uranium);
  text-shadow: 0 0 12px rgb(225 255 0 / 0.4);
  outline: none;
}

.de-corner {
  position: absolute;
  width: 18px;
  height: 18px;
  pointer-events: none;
  border-color: var(--de-uranium);
  border-style: solid;
  opacity: 0.65;
}
.de-corner--tl { top: 10px; left: 10px; border-width: 2px 0 0 2px; }
.de-corner--tr { top: 10px; right: 10px; border-width: 2px 2px 0 0; }
.de-corner--bl { bottom: 10px; left: 10px; border-width: 0 0 2px 2px; }
.de-corner--br { bottom: 10px; right: 10px; border-width: 0 2px 2px 0; }

@keyframes de-vein-pulse {
  0%, 100% { opacity: 0.45; }
  50% { opacity: 0.7; }
}
@keyframes de-chevron-spin {
  from { transform: rotate(45deg); }
  to { transform: rotate(405deg); }
}
@keyframes de-hud-in {
  from {
    opacity: 0;
    transform: translateY(18px) scale(0.96);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

@media (prefers-reduced-motion: reduce) {
  .de-veins,
  .de-chevrons::before,
  .de-chevrons::after,
  .de-hud {
    animation: none !important;
  }
  .de-enter {
    transition: none;
  }
  #doom-entrance {
    transition: opacity 0.2s ease, visibility 0.2s ease;
  }
}

@media (max-width: 420px) {
  .de-hud {
    padding: 1.75rem 1.25rem 1.5rem;
  }
  .de-enter {
    width: 100%;
    padding: 0.9rem 1.2rem;
    font-size: 1.15rem;
  }
}

/* --- doom-entrance@2: Y bridge CTAs + chrome chip + embed --- */
.de-enter--y {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin-top: 0.55rem;
  text-decoration: none;
  color: var(--de-uranium) !important;
  background: rgb(0 20 60 / 0.75) !important;
  border: 1px solid rgb(61 140 255 / 0.65) !important;
  box-shadow:
    0 0 0 1px rgb(0 71 171 / 0.5),
    0 0 28px rgb(0 71 171 / 0.35),
    inset 0 1px 0 rgb(255 255 255 / 0.06) !important;
  font-size: 1.05rem;
  letter-spacing: 0.12em;
}
.de-enter--y:hover,
.de-enter--y:focus-visible {
  color: #000 !important;
  background: var(--de-uranium) !important;
  border-color: var(--de-uranium) !important;
}

.de-link--primary {
  color: var(--de-uranium) !important;
  border-bottom-color: rgb(225 255 0 / 0.55) !important;
}

.de-bridge {
  margin: 1rem 0 0;
  font-family: "IBM Plex Mono", ui-monospace, monospace;
  font-size: 0.62rem;
  letter-spacing: 0.08em;
  color: var(--de-muted);
  opacity: 0.85;
}

/* Persistent chrome bridge (after ENTER) */
#doom-chrome-bridge {
  position: fixed;
  top: 12px;
  right: 12px;
  z-index: 99990;
  display: flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.35rem 0.45rem;
  background: rgb(0 12 36 / 0.55);
  border: 1px solid rgb(0 71 171 / 0.55);
  border-radius: 999px;
  backdrop-filter: blur(14px) saturate(1.3);
  -webkit-backdrop-filter: blur(14px) saturate(1.3);
  box-shadow: 0 8px 28px rgb(0 0 0 / 0.45), 0 0 20px rgb(0 71 171 / 0.25);
  font-family: "IBM Plex Mono", ui-monospace, monospace;
}
#doom-chrome-bridge a,
#doom-chrome-bridge button {
  appearance: none;
  border: none;
  background: transparent;
  color: var(--de-cobalt-hot, #3d8cff);
  font: inherit;
  font-size: 0.68rem;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  text-decoration: none;
  cursor: pointer;
  padding: 0.35rem 0.55rem;
  border-radius: 999px;
  transition: color 0.15s ease, background 0.15s ease, text-shadow 0.15s ease;
}
#doom-chrome-bridge a:hover,
#doom-chrome-bridge button:hover,
#doom-chrome-bridge a:focus-visible,
#doom-chrome-bridge button:focus-visible {
  color: var(--de-uranium, #E1FF00);
  background: rgb(0 71 171 / 0.28);
  text-shadow: 0 0 10px rgb(225 255 0 / 0.35);
  outline: none;
}
#doom-chrome-bridge .dcb-y {
  color: var(--de-uranium, #E1FF00);
  font-weight: 700;
}

/* Embed mode: hide entrance + bridge + learn dock chrome for iframe */
html.doom-embed #doom-entrance,
html.doom-embed #doom-chrome-bridge,
body.doom-embed #doom-entrance,
body.doom-embed #doom-chrome-bridge {
  display: none !important;
}
html.doom-embed #hector-learn-loop,
body.doom-embed #hector-learn-loop,
html.doom-embed #hector-geom-atmosphere,
body.doom-embed #hector-geom-atmosphere {
  display: none !important;
}
html.doom-embed,
body.doom-embed {
  background: #000 !important;
}