/* =========================================================
   ATLAS boot screen (eDEX-like, MAX hacker upgrade)
   ========================================================= */

:root {
  --boot-accent: rgb(0, 255, 255); /* Bright cyan for high intensity */
  --boot-accent2: rgb(0, 182, 255); /* Darker blue-cyan accent */
  --boot-text: rgb(255, 255, 255); /* White primary text */
  --boot-dim: rgba(255, 255, 255, 0.6); /* Dimmed white secondary text */

  --boot-bg0: #000; /* Solid black base */
  --boot-bg1: #0A0D1B; /* Dark navy blue gradient start */
  --boot-bg2: #0E1428; /* Darker navy blue gradient end */

  --boot-grid: rgba(0, 255, 255, 0.05); /* Grid lines with bright cyan hue */
  --boot-line: rgba(0, 255, 255, 0.15); /* Highlighted grid lines */

  --boot-font: ui-monospace, Menlo, Monaco, Lucida Console, monospace; /* Retro terminal fonts */
  --boot-title-font: 'Press Start 2P', 'Orbitron', system-ui, sans-serif; /* Pixelated title font */

  --boot-radius: 10px; /* Border radius for elements */
  --boot-glow: rgba(0, 255, 255, 0.2); /* Soft glowing effect */
  --boot-glow2: rgba(0, 182, 255, 0.15); /* Secondary glowing effect */
}

body.hud-loaded #hud-loader {
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
}

/* Overlay setup */
#hud-loader.boot {
  position: fixed;
  inset: 0;
  z-index: 99999;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 3vh;
  box-sizing: border-box;
  overflow: hidden;
  background:
    radial-gradient(circle at 50% 32%, rgba(0, 255, 255, 0.1), transparent 60%), /* Inner ring */
    radial-gradient(circle at 18% 80%, rgba(0, 182, 255, 0.08), transparent 62%), /* Outer circle */
    radial-gradient(circle at 82% 78%, rgba(0, 255, 255, 0.06), transparent 65%), /* Third ring */
    linear-gradient(to bottom, var(--boot-bg1), var(--boot-bg2)); /* Gradient background */
  color: var(--boot-accent);
  font-family: var(--boot-font);
  filter: saturate(1.1) contrast(1.05); /* Enhanced visual saturation */
}

#hud-loader.boot--bottomLeft {
  align-items: flex-end;
  justify-content: flex-start;
  text-align: left;
}

/* Main container */
#hud-loader .boot__wrap {
  position: relative;
  z-index: 5;
  width: min(980px, 92vw);
  text-align: center;
}

/* Frame styling */
#hud-loader .boot__frame {
  position: relative;
  border-radius: var(--boot-radius);
  padding: clamp(18px, 3vh, 30px);
  border: 1px solid rgba(0, 255, 255, 0.18);
  background:
    linear-gradient(to bottom, rgba(0, 0, 0, 0.42), rgba(0, 0, 0, 0.22)),
    var(--boot-bg1);
  box-shadow:
    0 28px 120px rgba(0, 0, 0, 0.7),
    0 0 0 1px rgba(0, 255, 255, 0.06) inset,
    0 0 60px rgba(0, 255, 255, 0.08),
    0 0 120px rgba(0, 255, 255, 0.05);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  animation: bootFrameIn .45s cubic-bezier(.2, .8, .2, 1) forwards;
  transform: translateY(6px);
  opacity: 0;
}

@keyframes bootFrameIn {
  to { transform: translateY(0); opacity: 1; }
}

/* Styling corner brackets */
#hud-loader .boot__frame::before,
#hud-loader .boot__frame::after {
  content: "";
  position: absolute;
  inset: 10px;
  pointer-events: none;
  border: 1px solid transparent;
  filter: drop-shadow(0 0 10px rgba(0, 255, 255, 0.16));
}

#hud-loader .boot__frame::before {
  width: 22px; height: 22px;
  inset: 12px auto auto 12px;
  border-left-color: rgba(0, 255, 255, 0.34);
  border-top-color: rgba(0, 255, 255, 0.34);
}

#hud-loader .boot__frame::after {
  width: 22px; height: 22px;
  inset: auto 12px 12px auto;
  border-right-color: rgba(0, 255, 255, 0.34);
  border-bottom-color: rgba(0, 255, 255, 0.34);
}

/* Background grid & vignette */
#hud-loader.boot::before {
  content: "";
  position: absolute;
  inset: -25%;
  pointer-events: none;
  background:
    linear-gradient(90deg, var(--boot-grid) 1px, transparent 1px) center,
    linear-gradient(var(--boot-grid) 1px, transparent 1px) center,
    radial-gradient(1200px 900px at 50% 50%, transparent 42%, rgba(0, 0, 0, 0.78) 100%);
  background-size: 44px 44px, 44px 44px, auto;
  opacity: 0.45;
  filter: blur(0.25px);
  animation: bootGridDrift 8s linear infinite;
}

@keyframes bootGridDrift {
  0% { transform: translate3d(0, 0, 0); }
  100% { transform: translate3d(-44px, 22px, 0); }
}

/* Extra soft glow layer */
#hud-loader.boot::after {
  content: "";
  position: absolute;
  inset: -10%;
  pointer-events: none;
  background:
    radial-gradient(900px 600px at 50% 35%, rgba(0, 255, 255, 0.09), transparent 65%),
    radial-gradient(500px 500px at 20% 80%, rgba(0, 182, 255, 0.06), transparent 70%);
  opacity: 0.8;
  mix-blend-mode: screen;
  filter: blur(8px);
  animation: bootHaze 3.6s ease-in-out infinite alternate;
}

@keyframes bootHaze {
  from { transform: scale(1.02) translateY(-6px); opacity: 0.65; }
  to { transform: scale(1.08) translateY(6px); opacity: 0.9; }
}

/* Scanlines */
#hud-loader.boot .boot__scanlines {
  position: absolute;
  inset: 0;
  z-index: 2;
  pointer-events: none;
  background:
    repeating-linear-gradient(
      180deg,
      rgba(255, 255, 255, 0.028) 0px,
      rgba(255, 255, 255, 0.028) 1px,
      transparent 2px,
      transparent 6px
    );
  opacity: 0.2;
  mix-blend-mode: overlay;
}

/* Screen flickering */
#hud-loader.boot .boot__flicker {
  position: absolute;
  inset: 0;
  z-index: 3;
  pointer-events: none;
  background: rgba(255, 255, 255, 0.02);
  opacity: 0.08;
  animation: bootFlicker 2.4s steps(1, end) infinite;
  mix-blend-mode: overlay;
}

@keyframes bootFlicker {
  0%, 100% { opacity: 0.06; }
  7% { opacity: 0.11; }
  11% { opacity: 0.05; }
  19% { opacity: 0.13; }
  23% { opacity: 0.06; }
  37% { opacity: 0.10; }
  51% { opacity: 0.05; }
  68% { opacity: 0.12; }
  79% { opacity: 0.07; }
}

/* Noise overlay */
#hud-loader.boot .boot__noise {
  position: absolute;
  inset: -20%;
  z-index: 4;
  pointer-events: none;
  background:
    repeating-linear-gradient(0deg,
      rgba(255, 255, 255, 0.018) 0px,
      rgba(255, 255, 255, 0.018) 1px,
      transparent 2px,
      transparent 4px),
    repeating-linear-gradient(90deg,
      rgba(255, 255, 255, 0.012) 0px,
      rgba(255, 255, 255, 0.012) 1px,
      transparent 2px,
      transparent 6px);
  opacity: 0.18;
  mix-blend-mode: overlay;
  filter: contrast(1.2);
  animation: bootNoise 900ms steps(2, end) infinite;
}

@keyframes bootNoise {
  0% { transform: translate3d(0, 0, 0); }
  100% { transform: translate3d(-3%, 2%, 0); }
}

/* Vertical sweep animation */
#hud-loader.boot .boot__sweep {
  position: absolute;
  inset: -35% 0;
  z-index: 2;
  pointer-events: none;
  background: linear-gradient(
    180deg,
    transparent 0%,
    rgba(0, 255, 255, 0.00) 34%,
    rgba(0, 255, 255, 0.12) 44%,
    rgba(0, 255, 255, 0.00) 54%,
    transparent 100%
  );
  animation: bootSweep 1.15s linear infinite;
  opacity: 0.55;
  mix-blend-mode: screen;
}

@keyframes bootSweep {
  from { transform: translateY(-18%); }
  to { transform: translateY(18%); }
}

/* Styled title element */
#hud-loader .boot__title {
  font-family: var(--boot-title-font);
  font-weight: bold;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  font-size: clamp(44px, 9.5vh, 120px);
  line-height: 1.04;
  margin: 0;
  padding: 10px 18px 14px 18px;
  color: var(--boot-text);
  border-bottom: 4px solid var(--boot-accent);
  box-shadow: 0 10px 0 rgba(0, 255, 255, 0.02);
  opacity: 0;
  animation: bootIn .38s cubic-bezier(.2, .8, .2, 1) .05s forwards;
  text-shadow:
    0 0 18px rgba(0, 255, 255, 0.12),
    0 0 52px rgba(0, 255, 255, 0.08),
    -1px 0 rgba(255, 0, 80, 0.10),
    1px 0 rgba(0, 150, 255, 0.12);
}

@keyframes bootIn {
  from { opacity: 0; transform: translateY(6px); filter: blur(1px); }
  to { opacity: 1; transform: translateY(0); filter: blur(0); }
}

/* Optional subline below the title */
#hud-loader .boot__sub {
  margin-top: 10px;
  font-size: 12px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.72);
}

/* Horizontal divider line */
#hud-loader .boot__divider {
  margin: 14px auto 8px;
  height: 1px;
  width: min(720px, 100%);
  background: linear-gradient(90deg, transparent, rgba(0, 255, 255, 0.25), transparent);
  opacity: 0.9;
}

/* Log output area */
#hud-loader .boot__log {
  margin: 14px auto 0;
  font-size: 12px;
  letter-spacing: 0.10em;
  text-transform: uppercase;
  color: var(--boot-dim);
  max-width: 76ch;
  white-space: pre-wrap;
  padding: 10px 12px;
  border: 1px solid rgba(0, 255, 255, 0.10);
  border-radius: 8px;
  background: rgba(0, 0, 0, 0.18);
}

/* Cursor blink animation */
#hud-loader .boot__log::after {
  content: "▋";
  color: rgba(0, 255, 255, 0.60);
  animation: bootCursor 900ms steps(1, end) infinite;
}

@keyframes bootCursor {
  50% { opacity: 0; }
}

/* Progress bar styling */
#hud-loader .boot__progress {
  margin: 14px auto 0;
  width: min(720px, 100%);
  text-align: left;
}

#hud-loader .boot__progress .boot__label {
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.66);
  margin-bottom: 8px;
}

#hud-loader .boot__bar {
  position: relative;
  height: 10px;
  border-radius: 999px;
  overflow: hidden;
  background: rgba(0, 255, 255, 0.08);
  border: 1px solid rgba(0, 255, 255, 0.18);
  box-shadow:
    0 0 0 1px rgba(0, 0, 0, 0.35) inset,
    0 0 24px rgba(0, 255, 255, 0.06);
}

#hud-loader .boot__bar i {
  display: block;
  height: 100%;
  width: 55%;
  background:
    linear-gradient(90deg, rgba(0, 255, 255, 0.85), rgba(0, 182, 255, 0.75));
  box-shadow: 0 0 24px rgba(0, 255, 255, 0.18);
  animation: bootProgress 2.2s ease-in-out infinite;
}

#hud-loader .boot__bar::after {
  content: "";
  position: absolute;
  inset: -60% -10%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.18), transparent);
  transform: translateX(-60%) rotate(8deg);
  animation: bootShine 1.25s linear infinite;
  opacity: 0.55;
  mix-blend-mode: overlay;
}

@keyframes bootProgress {
  0% { width: 18%; }
  35% { width: 62%; }
  70% { width: 48%; }
  100% { width: 82%; }
}

@keyframes bootShine {
  to { transform: translateX(120%) rotate(8deg); }
}

/* Glitch effect when applied */
#hud-loader .boot__title.glitch {
  border-color: transparent;
  color: transparent;
  text-shadow: none;
}

/* Shared glitch clones */
#hud-loader .boot__title::before,
#hud-loader .boot__title::after {
  content: attr(data-text);
  display: block;
  position: relative;
  opacity: 0;
  height: 0;
  animation-play-state: paused;
}

/* Top slice glitch clone */
#hud-loader .boot__title::before {
  transform: translateY(100%) translateX(-2%);
  clip-path: polygon(100% 0%, 100% 46%, 0% 46%, 0% 0%);
  color: rgba(0, 255, 255, 0.78);
  text-shadow:
    -2px 0 rgba(255, 0, 80, 0.22),
    2px 0 rgba(0, 150, 255, 0.22),
    0 0 24px rgba(0, 255, 255, 0.10);
  animation: bootGlitchTop 70ms linear infinite alternate-reverse;
}

/* Bottom slice glitch clone */
#hud-loader .boot__title::after {
  transform: translateY(-100%) translateX(2%);
  clip-path: polygon(100% 46%, 100% 100%, 0% 100%, 0% 46%);
  color: rgba(0, 255, 255, 0.92);
  text-shadow:
    -2px 0 rgba(255, 0, 80, 0.18),
    2px 0 rgba(0, 150, 255, 0.20),
    0 0 28px rgba(0, 255, 255, 0.12);
  animation: bootGlitchBottom 70ms linear infinite alternate-reverse;
}

/* Enable glitch animations */
#hud-loader .boot__title.glitch::before,
#hud-loader .boot__title.glitch::after {
  opacity: 1;
  height: auto;
  animation-play-state: running;
  animation-name: bootGlitchTop, bootGlitchPulse;
  animation-duration: 70ms, 3.2s;
  animation-timing-function: linear, steps(1, end);
  animation-iteration-count: infinite, infinite;
}

#hud-loader .boot__title.glitch::after {
  animation-name: bootGlitchBottom, bootGlitchPulse;
}

@keyframes bootGlitchTop {
  from { transform: translateY(100%) translateX(-1%); filter: blur(0px); }
  to { transform: translateY(100%) translateX(-8%); filter: blur(0.5px); }
}

@keyframes bootGlitchBottom {
  from { transform: translateY(-100%) translateX(1%); filter: blur(0px); }
  to { transform: translateY(-100%) translateX(5%); filter: blur(0.45px); }
}

/* Pulsing glitch effect */
@keyframes bootGlitchPulse {
  0%, 78%, 100% { opacity: 0; }
  80% { opacity: 1; }
  82% { opacity: 0; }
  88% { opacity: 1; }
  90% { opacity: 0; }
}

/* Reduce motion effects if needed */
@media (prefers-reduced-motion: reduce) {
  #hud-loader.boot::before,
  #hud-loader.boot::after,
  #hud-loader.boot .boot__scanlines,
  #hud-loader.boot .boot__sweep,
  #hud-loader.boot .boot__noise,
  #hud-loader.boot .boot__flicker,
  #hud-loader .boot__title,
  #hud-loader .boot__title::before,
  #hud-loader .boot__title::after,
  #hud-loader .boot__log::after,
  #hud-loader .boot__bar i,
  #hud-loader .boot__bar::after {
    animation: none !important;
  }
  #hud-loader .boot__title { opacity: 1; filter: none !important; }
  #hud-loader .boot__frame { opacity: 1; transform: none; }
}

/* Hide loader smoothly after completion */
#hud-loader.boot.boot--done {
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: opacity 0.45s ease, visibility 0s linear 0.45s;
}