:root {
  --bg0: #0a0e12;
  --bg1: #101820;
  --bg2: #162029;
  --ink: #e8eef2;
  --muted: #8a9aa6;
  --accent: #59b8db;
  --accent-dim: rgba(89, 184, 219, 0.35);
  --cta: #e89e38;
  --cta-hot: #ffc759;
  --line: rgba(255, 255, 255, 0.1);
  --danger: #c45a4a;
  --font-brand: "Orbitron", "Segoe UI", sans-serif;
  --font-body: "Exo 2", "Segoe UI", sans-serif;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
  width: 100%;
  height: 100%;
  overflow: hidden;
  background: var(--bg0);
  color: var(--ink);
  font-family: var(--font-body);
}

body {
  background:
    radial-gradient(120% 80% at 50% -10%, rgba(89, 184, 219, 0.14), transparent 55%),
    radial-gradient(90% 60% at 80% 100%, rgba(232, 158, 56, 0.08), transparent 50%),
    linear-gradient(180deg, var(--bg0) 0%, var(--bg1) 48%, #0c1218 100%);
}

/* Atmospheric layer behind boot / canvas */
.dw-atmosphere {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  overflow: hidden;
}

.dw-atmosphere::before {
  content: "";
  position: absolute;
  inset: -20%;
  background-image:
    linear-gradient(rgba(89, 184, 219, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(89, 184, 219, 0.05) 1px, transparent 1px);
  background-size: 48px 48px;
  transform: perspective(600px) rotateX(58deg) translateY(-8%);
  transform-origin: center top;
  opacity: 0.55;
  animation: dw-grid-drift 28s linear infinite;
}

.dw-horizon {
  position: absolute;
  left: 0;
  right: 0;
  top: 42%;
  height: 2px;
  background: linear-gradient(
    90deg,
    transparent,
    var(--accent-dim) 20%,
    var(--accent) 50%,
    var(--accent-dim) 80%,
    transparent
  );
  box-shadow: 0 0 24px rgba(89, 184, 219, 0.45);
  animation: dw-horizon-pulse 4.5s ease-in-out infinite;
}

.dw-vignette {
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at center, transparent 40%, rgba(0, 0, 0, 0.55) 100%);
}

@keyframes dw-grid-drift {
  from { background-position: 0 0; }
  to { background-position: 0 48px; }
}

@keyframes dw-horizon-pulse {
  0%, 100% { opacity: 0.45; }
  50% { opacity: 0.95; }
}

@keyframes dw-fade-up {
  from { opacity: 0; transform: translateY(18px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes dw-bar-glow {
  0%, 100% { box-shadow: 0 0 0 rgba(232, 158, 56, 0); }
  50% { box-shadow: 0 0 18px rgba(232, 158, 56, 0.45); }
}

/* Boot / loading shell */
#dw-boot {
  position: fixed;
  inset: 0;
  z-index: 20;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 24px;
  text-align: center;
  transition: opacity 0.45s ease, visibility 0.45s ease;
}

#dw-boot.is-done {
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
}

.dw-brand {
  font-family: var(--font-brand);
  font-weight: 800;
  font-size: clamp(2.8rem, 9vw, 5.5rem);
  letter-spacing: 0.18em;
  margin: 0 0 0.35em;
  color: var(--ink);
  text-shadow:
    0 0 40px rgba(89, 184, 219, 0.35),
    0 2px 0 rgba(0, 0, 0, 0.45);
  animation: dw-fade-up 0.8s ease both;
}

.dw-brand span {
  color: var(--accent);
}

.dw-tagline {
  margin: 0 0 2.2rem;
  max-width: 28rem;
  font-size: clamp(1rem, 2.4vw, 1.25rem);
  font-weight: 400;
  letter-spacing: 0.04em;
  color: var(--muted);
  line-height: 1.45;
  animation: dw-fade-up 0.9s ease 0.08s both;
}

.dw-load {
  width: min(420px, 86vw);
  animation: dw-fade-up 1s ease 0.16s both;
}

.dw-load-meta {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  margin-bottom: 0.55rem;
  font-size: 0.78rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--muted);
  font-family: var(--font-brand);
}

.dw-load-meta #dw-pct {
  color: var(--cta);
  font-variant-numeric: tabular-nums;
}

.dw-bar {
  height: 6px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid var(--line);
  overflow: hidden;
  animation: dw-bar-glow 2.4s ease-in-out infinite;
}

.dw-bar-fill {
  height: 100%;
  width: 0%;
  border-radius: inherit;
  background: linear-gradient(90deg, var(--cta) 0%, var(--cta-hot) 55%, var(--accent) 100%);
  transition: width 0.12s linear;
}

.dw-hint {
  margin-top: 1.75rem;
  font-size: 0.8rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: rgba(138, 154, 166, 0.75);
  animation: dw-fade-up 1.1s ease 0.24s both;
}

.dw-error {
  margin-top: 1rem;
  max-width: 28rem;
  color: #ffb4a8;
  font-size: 0.95rem;
  display: none;
}

.dw-error.is-visible {
  display: block;
}

/* Unity host */
#unity-container {
  position: fixed;
  inset: 0;
  z-index: 10;
  width: 100%;
  height: 100%;
  background: #05080c;
}

#unity-canvas {
  width: 100%;
  height: 100%;
  display: block;
  background: #05080c;
  outline: none;
}

#unity-warning {
  position: absolute;
  left: 50%;
  top: 8%;
  transform: translateX(-50%);
  z-index: 30;
  display: none;
  max-width: min(520px, 90vw);
  padding: 12px 16px;
  border: 1px solid var(--accent-dim);
  background: rgba(10, 14, 18, 0.92);
  color: var(--ink);
  font-size: 0.9rem;
}

#dw-chrome {
  position: fixed;
  right: 14px;
  bottom: 14px;
  z-index: 25;
  display: none;
  gap: 8px;
  align-items: center;
}

#dw-chrome.is-ready {
  display: flex;
}

#dw-fullscreen {
  appearance: none;
  border: 1px solid var(--accent-dim);
  background: rgba(16, 24, 32, 0.88);
  color: var(--accent);
  font-family: var(--font-brand);
  font-size: 0.68rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  padding: 10px 14px;
  cursor: pointer;
  transition: background 0.15s ease, border-color 0.15s ease, color 0.15s ease;
}

#dw-fullscreen:hover {
  background: rgba(232, 158, 56, 0.18);
  border-color: var(--cta);
  color: var(--cta-hot);
}

@media (max-width: 720px) {
  .dw-brand {
    letter-spacing: 0.12em;
  }

  .dw-tagline {
    margin-bottom: 1.6rem;
  }
}