:root {
  --bg: #070709;
  --fg: #f3efe6;
  --fg-muted: rgba(243, 239, 230, 0.62);
  --accent: #e24e2b;
  --accent-glow: rgba(226, 78, 43, 0.35);
  --surface: rgba(10, 10, 14, 0.72);
  --border: rgba(243, 239, 230, 0.16);
  --font-display: "Instrument Serif", Georgia, "Times New Roman", serif;
  --font-mono: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, monospace;
}

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

html,
body {
  width: 100%;
  height: 100%;
  overflow: hidden;
  background-color: var(--bg);
  color: var(--fg);
  font-family: var(--font-mono);
  -webkit-font-smoothing: antialiased;
  user-select: none;
  touch-action: none;
}

#stage {
  position: fixed;
  inset: 0;
  width: 100%;
  height: 100%;
  display: block;
  cursor: crosshair;
}

/* Subtle organic film grain */
.grain {
  position: fixed;
  inset: -50%;
  width: 200%;
  height: 200%;
  pointer-events: none;
  opacity: 0.055;
  background-image: radial-gradient(rgba(243, 239, 230, 0.9) 1px, transparent 0);
  background-size: 3px 3px;
  mix-blend-mode: overlay;
  z-index: 2;
}

.vignette {
  position: fixed;
  inset: 0;
  pointer-events: none;
  background: radial-gradient(
    circle at 50% 50%,
    transparent 32%,
    rgba(7, 7, 9, 0.55) 78%,
    rgba(7, 7, 9, 0.92) 100%
  );
  z-index: 3;
}

/* Top HUD */
.hud-top {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 10;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 1.5rem;
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  background: linear-gradient(to bottom, rgba(7, 7, 9, 0.82), transparent);
  transition: opacity 0.4s ease, transform 0.4s ease;
}

.brand,
.telemetry {
  display: flex;
  align-items: center;
  gap: 0.65rem;
}

.pulse-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 10px var(--accent);
  animation: pulse 2.2s infinite ease-in-out;
}

@keyframes pulse {
  0%, 100% {
    opacity: 1;
    transform: scale(1);
  }
  50% {
    opacity: 0.35;
    transform: scale(0.75);
  }
}

.brand-name {
  font-weight: 500;
}

.divider {
  color: var(--fg-muted);
  opacity: 0.5;
}

.status-tag {
  color: var(--accent);
  font-weight: 500;
}

.telemetry {
  color: var(--fg-muted);
}

/* Editorial Hero */
.hero {
  position: fixed;
  inset: 0;
  z-index: 8;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 2rem;
  pointer-events: none;
  transition: opacity 0.55s cubic-bezier(0.22, 1, 0.36, 1),
    transform 0.55s cubic-bezier(0.22, 1, 0.36, 1);
}

.hero.is-hidden {
  opacity: 0;
  transform: scale(0.96);
  pointer-events: none;
}

.eyebrow {
  font-size: 0.7rem;
  letter-spacing: 0.28em;
  color: var(--accent);
  margin-bottom: 1rem;
  text-shadow: 0 2px 12px rgba(0, 0, 0, 0.9);
}

.title {
  font-family: var(--font-display);
  font-weight: 400;
  font-size: clamp(3.6rem, 11vw, 8.5rem);
  line-height: 0.88;
  letter-spacing: -0.02em;
  color: var(--fg);
  text-shadow: 0 10px 40px rgba(7, 7, 9, 0.9), 0 2px 10px rgba(7, 7, 9, 0.85);
}

.title em {
  font-style: italic;
  color: var(--fg);
}

.subtitle {
  margin-top: 1.25rem;
  font-size: 0.78rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--fg-muted);
  background: rgba(7, 7, 9, 0.65);
  padding: 0.45rem 0.9rem;
  border: 1px solid var(--border);
  backdrop-filter: blur(8px);
}

.enter-btn {
  pointer-events: auto;
  margin-top: 1.6rem;
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.75rem 1.35rem;
  background: var(--surface);
  color: var(--fg);
  border: 1px solid var(--border);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.16em;
  cursor: pointer;
  backdrop-filter: blur(12px);
  transition: border-color 0.25s ease, background 0.25s ease, transform 0.2s ease;
}

.enter-btn:hover {
  border-color: var(--accent);
  background: rgba(226, 78, 43, 0.16);
  transform: translateY(-1px);
}

.enter-btn .arrow {
  color: var(--accent);
}

/* Bottom Dock */
.hud-bottom {
  position: fixed;
  bottom: 1.25rem;
  left: 50%;
  transform: translateX(-50%);
  z-index: 10;
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  align-items: center;
  gap: 0.5rem;
  padding: 0.45rem;
  background: var(--surface);
  border: 1px solid var(--border);
  backdrop-filter: blur(16px);
  max-width: calc(100vw - 1.5rem);
  transition: opacity 0.4s ease, transform 0.4s ease;
}

.mode-group,
.action-group {
  display: flex;
  align-items: center;
  gap: 0.25rem;
}

.action-group {
  border-left: 1px solid var(--border);
  padding-left: 0.45rem;
}

.mode-btn,
.action-btn {
  background: transparent;
  border: 1px solid transparent;
  color: var(--fg-muted);
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.1em;
  padding: 0.5rem 0.75rem;
  cursor: pointer;
  white-space: nowrap;
  transition: color 0.2s ease, background 0.2s ease, border-color 0.2s ease;
}

.mode-btn:hover,
.action-btn:hover {
  color: var(--fg);
  background: rgba(243, 239, 230, 0.06);
}

.mode-btn.active {
  color: var(--fg);
  background: rgba(226, 78, 43, 0.18);
  border-color: var(--accent);
}

.action-btn[aria-pressed="true"] {
  color: var(--accent);
  border-color: rgba(226, 78, 43, 0.5);
}

/* Zen Mode */
body.zen .hud-top,
body.zen .hud-bottom {
  opacity: 0;
  pointer-events: none;
  transform: translateY(10px);
}

body.zen .hud-bottom {
  transform: translateX(-50%) translateY(16px);
}

.zen-restore {
  position: fixed;
  bottom: 1rem;
  right: 1rem;
  z-index: 12;
  background: var(--surface);
  color: var(--fg-muted);
  border: 1px solid var(--border);
  font-family: var(--font-mono);
  font-size: 0.65rem;
  letter-spacing: 0.14em;
  padding: 0.45rem 0.75rem;
  cursor: pointer;
  backdrop-filter: blur(10px);
}

.zen-restore:hover {
  color: var(--fg);
  border-color: var(--accent);
}

@media (max-width: 720px) {
  .hud-top {
    padding: 0.8rem 1rem;
    font-size: 0.62rem;
  }

  .telemetry {
    display: none;
  }

  .hud-bottom {
    bottom: 0.75rem;
    padding: 0.35rem;
  }

  .action-group {
    border-left: none;
    padding-left: 0;
    border-top: 1px solid var(--border);
    padding-top: 0.35rem;
    width: 100%;
    justify-content: center;
  }

  .mode-btn,
  .action-btn {
    padding: 0.42rem 0.55rem;
    font-size: 0.62rem;
  }
}