*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --font-serif: 'Instrument Serif', Georgia, serif;
  --font-sans: 'DM Sans', system-ui, sans-serif;
  --font-mono: 'DM Mono', monospace;
  --bg: #010104;
  --accent: #8B9DFF;
  --accent-rgb: 139 157 255;
  --play: #8B9DFF;
  --lab: #C9A96E;
  --read: #7FB8A8;
  --port: #E8A87C;
  --text: #E4E4F0;
  --text-bright: #F2F2F8;
  --text-muted: #9A9AB2;
  --text-dim: #5C5C78;
}

html, body {
  width: 100%;
  height: 100%;
  overflow: hidden;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-sans);
  cursor: crosshair;
}

#scene {
  position: fixed;
  inset: 0;
  width: 100%;
  height: 100%;
  display: block;
  touch-action: none;
}

.boot-fail {
  position: fixed;
  inset: 0;
  z-index: 50;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 1rem;
  background: var(--bg);
  font-family: var(--font-mono);
  font-size: 0.9rem;
  color: var(--text-muted);
}
.boot-fail[hidden] {
  display: none !important;
}
.boot-fail a {
  color: var(--accent);
  text-decoration: none;
}
.boot-fail a:hover { text-decoration: underline; }

.hud {
  position: fixed;
  inset: 0;
  z-index: 10;
  pointer-events: none;
  display: flex;
  flex-direction: column;
}
.hud[hidden] {
  display: none !important;
}

.hud-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 1.35rem;
  pointer-events: auto;
  background: linear-gradient(to bottom, rgb(1 1 4 / 0.75), transparent);
}

.hud-logo {
  font-family: var(--font-serif);
  font-size: 1.15rem;
  color: var(--text-bright);
  text-decoration: none;
  letter-spacing: -0.02em;
}
.hud-logo:hover { color: var(--accent); }

.hud-top-right {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.hud-classic {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-muted);
  text-decoration: none;
  padding: 0.4rem 0.7rem;
  border: 1px solid rgb(var(--accent-rgb) / 0.25);
}
.hud-classic:hover {
  color: var(--text);
  border-color: rgb(var(--accent-rgb) / 0.5);
}

.hud-btn {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-dim);
  background: transparent;
  border: 1px solid rgb(var(--accent-rgb) / 0.2);
  padding: 0.4rem 0.65rem;
  cursor: pointer;
  pointer-events: auto;
}
.hud-btn[aria-pressed="true"] {
  color: var(--accent);
  border-color: rgb(var(--accent-rgb) / 0.55);
}
.hud-btn:hover { color: var(--text); }

.hud-hint {
  align-self: center;
  margin-top: 0.25rem;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-dim);
  opacity: 0.85;
  transition: opacity 0.4s ease;
}
.hud-hint.fade { opacity: 0; }

.confirm {
  position: absolute;
  left: 50%;
  top: 42%;
  transform: translate(-50%, -50%);
  pointer-events: auto;
  text-align: center;
  padding: 1.35rem 1.5rem 1.2rem;
  background: rgb(1 1 4 / 0.88);
  border: 1px solid rgb(var(--accent-rgb) / 0.4);
  box-shadow: 0 20px 50px rgb(0 0 0 / 0.5);
  min-width: 14rem;
}
.confirm[hidden] {
  display: none !important;
}
.confirm-label {
  font-family: var(--font-serif);
  font-size: 1.45rem;
  color: var(--text-bright);
  margin-bottom: 1rem;
}
.confirm-actions {
  display: flex;
  gap: 0.55rem;
  justify-content: center;
}
.confirm-go {
  padding: 0.55rem 1.15rem;
  font-family: var(--font-sans);
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--bg);
  background: var(--accent);
  border: none;
  cursor: pointer;
}
.confirm-go:hover { filter: brightness(1.08); }
.confirm-cancel {
  padding: 0.55rem 1rem;
  font-family: var(--font-sans);
  font-size: 0.88rem;
  color: var(--text-muted);
  background: transparent;
  border: 1px solid rgb(var(--accent-rgb) / 0.3);
  cursor: pointer;
}
.confirm-cancel:hover { color: var(--text); }

.dest-rail {
  margin-top: auto;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0.55rem;
  padding: 1rem 1.1rem 1.25rem;
  pointer-events: auto;
  background: linear-gradient(to top, rgb(1 1 4 / 0.85), rgb(1 1 4 / 0.35), transparent);
}

.dest-chip {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 0.15rem;
  padding: 0.7rem 0.8rem;
  background: rgb(1 1 4 / 0.55);
  border: 1px solid rgb(var(--accent-rgb) / 0.22);
  color: var(--text);
  cursor: pointer;
  text-align: left;
  transition: border-color 0.2s ease, background 0.2s ease, transform 0.2s ease;
}
.dest-chip:hover,
.dest-chip.is-hot {
  border-color: rgb(var(--accent-rgb) / 0.65);
  background: rgb(var(--accent-rgb) / 0.12);
  transform: translateY(-2px);
}
.dest-chip:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}
.dest-chip[data-zone="arcade"] { --z: var(--play); }
.dest-chip[data-zone="lab"] { --z: var(--lab); }
.dest-chip[data-zone="blog"] { --z: var(--read); }
.dest-chip[data-zone="portfolio"] { --z: var(--port); }
.dest-chip[data-zone="stock"] { --z: #5CE1E6; }
.dest-chip[data-zone="token"] { --z: var(--lab); }
.dest-chip[data-zone="drive"] { --z: var(--play); }
.dest-chip.dest-return { --z: var(--accent); }
.dest-chip.is-hot { border-color: var(--z); box-shadow: 0 0 18px color-mix(in srgb, var(--z) 25%, transparent); }

.rail-moon[hidden],
.rail-station[hidden],
.rail-focus[hidden] {
  display: none !important;
}

.rail-focus {
  grid-template-columns: auto 1fr;
  align-items: center;
}
.focus-hint {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-dim);
  padding: 0 0.5rem;
}

.chip-code {
  font-family: var(--font-mono);
  font-size: 0.62rem;
  letter-spacing: 0.14em;
  color: var(--z, var(--accent));
}
.chip-name {
  font-family: var(--font-serif);
  font-size: 1.15rem;
  line-height: 1.1;
  color: var(--text-bright);
}
.chip-sub {
  font-family: var(--font-mono);
  font-size: 0.62rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-dim);
}

.zone-labels {
  position: fixed;
  inset: 0;
  z-index: 5;
  pointer-events: none;
  overflow: hidden;
}

.zone-label {
  position: absolute;
  transform: translate(-50%, -120%);
  white-space: nowrap;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--text-bright);
  padding: 0.3rem 0.55rem;
  background: rgb(1 1 4 / 0.65);
  border: 1px solid rgb(255 255 255 / 0.18);
  opacity: 0.9;
  transition: opacity 0.2s ease, border-color 0.2s ease;
}
.zone-label.is-hot {
  opacity: 1;
  border-color: var(--z, var(--accent));
  color: var(--z, var(--accent));
}
.zone-label[data-zone="arcade"] { --z: var(--play); }
.zone-label[data-zone="lab"] { --z: var(--lab); }
.zone-label[data-zone="blog"] { --z: var(--read); }
.zone-label[data-zone="portfolio"] { --z: var(--port); }
.zone-label.hidden { visibility: hidden; }
/* Arcade / Lab / Library / Portfolio are named by 3D neon signage on the
   modules themselves — the floating chip would just duplicate it. */
.zone-label-primary { display: none; }

.boat-tip {
  position: fixed;
  z-index: 6;
  pointer-events: none;
  font-family: var(--font-mono);
  font-size: 0.65rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: #9fd0ff;
  padding: 0.25rem 0.5rem;
  background: rgb(1 1 4 / 0.7);
  border: 1px solid rgb(159 208 255 / 0.35);
  transform: translate(-50%, -140%);
  white-space: nowrap;
}

@media (max-width: 720px) {
  .dest-rail {
    grid-template-columns: repeat(2, 1fr);
    gap: 0.45rem;
    padding: 0.75rem 0.75rem 1rem;
  }
  .chip-name { font-size: 1rem; }
  .hud-hint { font-size: 0.58rem; padding: 0 1rem; text-align: center; }
  .hud-top { padding: 0.75rem 0.9rem; }
}

@media (prefers-reduced-motion: reduce) {
  .dest-chip,
  .hud-hint,
  .zone-label { transition: none; }
}