/* Orbitarium — observatory instrument aesthetic */
:root {
  --void: #080a10;
  --ink: #0e121c;
  --panel: color-mix(in oklab, #121826 88%, transparent);
  --panel-edge: color-mix(in oklab, #e8dcc8 12%, transparent);
  --brass: #c9a46c;
  --brass-soft: #a8895a;
  --brass-glow: color-mix(in oklab, #c9a46c 35%, transparent);
  --lunar: #d8d2c6;
  --lunar-dim: #8a8478;
  --mist: color-mix(in oklab, #d8d2c6 55%, transparent);
  --danger-soft: #b86b5a;
  --ok: #7a9e7e;
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 18px;
  --font-display: "Instrument Serif", Georgia, serif;
  --font-ui: "Outfit", system-ui, sans-serif;
  --font-mono: "IBM Plex Mono", ui-monospace, monospace;
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --shadow-panel: 0 12px 40px color-mix(in oklab, #000 45%, transparent),
    inset 0 1px 0 color-mix(in oklab, #fff 6%, transparent);
}

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

html,
body {
  height: 100%;
  overflow: hidden;
  background: var(--void);
  color: var(--lunar);
  font-family: var(--font-ui);
  font-weight: 400;
  font-size: 14px;
  line-height: 1.45;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

#canvas-wrap {
  position: fixed;
  inset: 0;
  z-index: 0;
}

#canvas-wrap canvas {
  display: block;
  width: 100%;
  height: 100%;
}

.vignette {
  pointer-events: none;
  position: fixed;
  inset: 0;
  z-index: 1;
  background:
    radial-gradient(ellipse 75% 65% at 50% 45%, transparent 40%, color-mix(in oklab, var(--void) 75%, transparent) 100%),
    linear-gradient(180deg, color-mix(in oklab, var(--void) 40%, transparent) 0%, transparent 18%, transparent 72%, color-mix(in oklab, var(--void) 55%, transparent) 100%);
}

/* —— Top bar —— */
.top-bar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 10;
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  padding: clamp(1rem, 2.5vw, 1.75rem) clamp(1.1rem, 3vw, 2rem);
  pointer-events: none;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.85rem;
  pointer-events: auto;
  animation: rise 0.9s var(--ease-out) both;
}

.brand-mark {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: radial-gradient(circle at 35% 35%, #ffe0a8, var(--brass) 55%, #6a4a20);
  box-shadow: 0 0 18px var(--brass-glow), 0 0 2px var(--brass);
  flex-shrink: 0;
}

.brand h1 {
  font-family: var(--font-display);
  font-weight: 400;
  font-size: clamp(1.55rem, 2.8vw, 2rem);
  letter-spacing: 0.01em;
  color: var(--lunar);
  line-height: 1.1;
}

.brand-sub {
  font-size: 0.68rem;
  font-weight: 400;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--lunar-dim);
  margin-top: 0.15rem;
}

.epoch {
  text-align: right;
  pointer-events: auto;
  animation: rise 0.9s var(--ease-out) 0.08s both;
}

.epoch-label {
  display: block;
  font-size: 0.65rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--lunar-dim);
  margin-bottom: 0.25rem;
}

#sim-date {
  font-family: var(--font-mono);
  font-size: clamp(0.85rem, 1.5vw, 1rem);
  font-weight: 500;
  color: var(--brass);
  letter-spacing: 0.02em;
  font-variant-numeric: tabular-nums;
}

/* —— Body info panel —— */
.panel-left {
  position: fixed;
  top: clamp(5.5rem, 12vh, 7rem);
  left: clamp(1rem, 2.5vw, 2rem);
  z-index: 10;
  width: min(280px, calc(100vw - 2rem));
  padding: 1.15rem 1.25rem 1.25rem;
  background: var(--panel);
  backdrop-filter: blur(18px) saturate(1.2);
  -webkit-backdrop-filter: blur(18px) saturate(1.2);
  border: 1px solid var(--panel-edge);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-panel);
  animation: rise 1s var(--ease-out) 0.15s both;
}

.panel-kicker {
  display: block;
  font-size: 0.62rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--brass-soft);
  margin-bottom: 0.2rem;
}

.panel-header h2 {
  font-family: var(--font-display);
  font-size: 1.65rem;
  font-weight: 400;
  color: var(--lunar);
  letter-spacing: 0.01em;
}

.body-stats {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.85rem 1rem;
  margin: 1.15rem 0 1rem;
  padding: 1rem 0;
  border-top: 1px solid color-mix(in oklab, var(--lunar) 8%, transparent);
  border-bottom: 1px solid color-mix(in oklab, var(--lunar) 8%, transparent);
}

.stat dt {
  font-size: 0.62rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--lunar-dim);
  margin-bottom: 0.2rem;
}

.stat dd {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--lunar);
  font-variant-numeric: tabular-nums;
}

.body-blurb {
  font-size: 0.8rem;
  font-weight: 300;
  line-height: 1.55;
  color: var(--mist);
}

/* —— Planet rail —— */
.planet-rail {
  position: fixed;
  right: clamp(0.75rem, 2vw, 1.5rem);
  top: 50%;
  transform: translateY(-50%);
  z-index: 10;
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
  padding: 0.45rem;
  background: var(--panel);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--panel-edge);
  border-radius: 999px;
  box-shadow: var(--shadow-panel);
  animation: rise 1s var(--ease-out) 0.22s both;
  max-height: min(70vh, 520px);
  overflow-y: auto;
  scrollbar-width: none;
}

.planet-rail::-webkit-scrollbar {
  display: none;
}

.planet-chip {
  display: flex;
  align-items: center;
  gap: 0.55rem;
  padding: 0.45rem 0.85rem 0.45rem 0.55rem;
  border: none;
  background: transparent;
  border-radius: 999px;
  color: var(--lunar-dim);
  font-family: var(--font-ui);
  font-size: 0.75rem;
  font-weight: 400;
  cursor: pointer;
  transition: color 0.25s var(--ease-out), background 0.25s var(--ease-out);
  white-space: nowrap;
}

.planet-chip:hover {
  color: var(--lunar);
  background: color-mix(in oklab, var(--lunar) 6%, transparent);
}

.planet-chip:focus-visible {
  outline: 2px solid var(--brass);
  outline-offset: 2px;
}

.planet-chip.is-active {
  color: var(--void);
  background: var(--brass);
  font-weight: 500;
}

.planet-chip.is-active .chip-dot {
  box-shadow: 0 0 0 1.5px color-mix(in oklab, var(--void) 35%, transparent);
}

.chip-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--c, var(--lunar));
  flex-shrink: 0;
}

/* —— Control dock —— */
.control-dock {
  position: fixed;
  bottom: clamp(1rem, 3vh, 1.75rem);
  left: 50%;
  transform: translateX(-50%);
  z-index: 10;
  display: flex;
  align-items: stretch;
  gap: 0;
  width: min(720px, calc(100vw - 1.5rem));
  padding: 0.85rem 1rem;
  background: var(--panel);
  backdrop-filter: blur(20px) saturate(1.15);
  -webkit-backdrop-filter: blur(20px) saturate(1.15);
  border: 1px solid var(--panel-edge);
  border-radius: calc(var(--radius-lg) + 4px);
  box-shadow: var(--shadow-panel);
  animation: rise 1s var(--ease-out) 0.28s both;
}

.dock-group {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.dock-group.transport {
  padding-right: 1rem;
  margin-right: 0.75rem;
  border-right: 1px solid color-mix(in oklab, var(--lunar) 10%, transparent);
}

.dock-group.speed {
  flex: 1;
  flex-direction: column;
  align-items: stretch;
  gap: 0.35rem;
  min-width: 0;
  padding-right: 1rem;
  margin-right: 0.5rem;
  border-right: 1px solid color-mix(in oklab, var(--lunar) 10%, transparent);
}

.dock-group.toggles {
  flex-direction: column;
  align-items: flex-start;
  gap: 0.35rem;
  justify-content: center;
}

.icon-btn {
  display: grid;
  place-items: center;
  width: 40px;
  height: 40px;
  border: 1px solid color-mix(in oklab, var(--lunar) 14%, transparent);
  border-radius: 50%;
  background: color-mix(in oklab, var(--ink) 60%, transparent);
  color: var(--lunar);
  cursor: pointer;
  transition: background 0.2s var(--ease-out), border-color 0.2s, color 0.2s, transform 0.15s;
}

.icon-btn:hover {
  background: color-mix(in oklab, var(--lunar) 8%, transparent);
  border-color: color-mix(in oklab, var(--brass) 40%, transparent);
  color: var(--brass);
}

.icon-btn:active {
  transform: scale(0.94);
}

.icon-btn:focus-visible {
  outline: 2px solid var(--brass);
  outline-offset: 2px;
}

.icon-btn-primary {
  background: color-mix(in oklab, var(--brass) 18%, transparent);
  border-color: color-mix(in oklab, var(--brass) 45%, transparent);
  color: var(--brass);
}

.icon-btn-primary:hover {
  background: color-mix(in oklab, var(--brass) 28%, transparent);
  color: #e8c98a;
}

.speed-label {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  font-size: 0.65rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--lunar-dim);
}

#speed-value {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.02em;
  text-transform: none;
  color: var(--brass);
  font-variant-numeric: tabular-nums;
}

.slider-row {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.speed-preset {
  flex-shrink: 0;
  padding: 0.2rem 0.45rem;
  border: none;
  background: transparent;
  color: var(--lunar-dim);
  font-family: var(--font-ui);
  font-size: 0.65rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  cursor: pointer;
  border-radius: var(--radius-sm);
  transition: color 0.2s, background 0.2s;
}

.speed-preset:hover {
  color: var(--brass);
  background: color-mix(in oklab, var(--brass) 10%, transparent);
}

.speed-preset:focus-visible {
  outline: 2px solid var(--brass);
  outline-offset: 1px;
}

#speed-slider {
  flex: 1;
  -webkit-appearance: none;
  appearance: none;
  height: 4px;
  border-radius: 2px;
  background: linear-gradient(
    90deg,
    color-mix(in oklab, var(--brass) 25%, transparent),
    color-mix(in oklab, var(--brass) 70%, transparent)
  );
  outline: none;
  cursor: pointer;
}

#speed-slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--lunar);
  border: 2px solid var(--brass);
  box-shadow: 0 0 10px var(--brass-glow);
  cursor: grab;
  transition: transform 0.15s var(--ease-out);
}

#speed-slider::-webkit-slider-thumb:hover {
  transform: scale(1.12);
}

#speed-slider::-webkit-slider-thumb:active {
  cursor: grabbing;
}

#speed-slider::-moz-range-thumb {
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--lunar);
  border: 2px solid var(--brass);
  box-shadow: 0 0 10px var(--brass-glow);
  cursor: grab;
}

#speed-slider:focus-visible {
  outline: none;
}

#speed-slider:focus-visible::-webkit-slider-thumb {
  outline: 2px solid var(--brass);
  outline-offset: 2px;
}

.speed-ticks {
  display: flex;
  justify-content: space-between;
  padding: 0 0.15rem;
  font-size: 0.58rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: color-mix(in oklab, var(--lunar-dim) 70%, transparent);
}

/* Toggles */
.toggle {
  display: flex;
  align-items: center;
  gap: 0.45rem;
  font-size: 0.72rem;
  color: var(--lunar-dim);
  cursor: pointer;
  user-select: none;
}

.toggle input {
  position: absolute;
  opacity: 0;
  width: 0;
  height: 0;
}

.toggle-ui {
  position: relative;
  width: 28px;
  height: 16px;
  border-radius: 999px;
  background: color-mix(in oklab, var(--lunar) 12%, transparent);
  border: 1px solid color-mix(in oklab, var(--lunar) 14%, transparent);
  transition: background 0.25s var(--ease-out), border-color 0.25s;
  flex-shrink: 0;
}

.toggle-ui::after {
  content: "";
  position: absolute;
  top: 2px;
  left: 2px;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--lunar-dim);
  transition: transform 0.25s var(--ease-out), background 0.25s;
}

.toggle input:checked + .toggle-ui {
  background: color-mix(in oklab, var(--brass) 30%, transparent);
  border-color: color-mix(in oklab, var(--brass) 50%, transparent);
}

.toggle input:checked + .toggle-ui::after {
  transform: translateX(12px);
  background: var(--brass);
}

.toggle input:focus-visible + .toggle-ui {
  outline: 2px solid var(--brass);
  outline-offset: 2px;
}

.toggle:hover {
  color: var(--lunar);
}

.hint {
  position: fixed;
  bottom: calc(clamp(1rem, 3vh, 1.75rem) + 92px);
  left: 50%;
  transform: translateX(-50%);
  z-index: 9;
  font-size: 0.68rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: color-mix(in oklab, var(--lunar-dim) 80%, transparent);
  pointer-events: none;
  animation: fade-hint 0.6s var(--ease-out) 2.5s both;
  white-space: nowrap;
}

@keyframes rise {
  from {
    opacity: 0;
    transform: translateY(12px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fade-hint {
  from {
    opacity: 1;
  }
  to {
    opacity: 0;
    visibility: hidden;
  }
}

/* Mobile */
@media (max-width: 780px) {
  .panel-left {
    top: auto;
    bottom: calc(clamp(1rem, 3vh, 1.75rem) + 150px);
    left: 0.75rem;
    right: 0.75rem;
    width: auto;
    max-width: none;
  }

  .body-blurb {
    display: none;
  }

  .body-stats {
    gap: 0.6rem 0.75rem;
    margin: 0.75rem 0 0;
    padding: 0.75rem 0 0;
    border-bottom: none;
  }

  .planet-rail {
    top: auto;
    bottom: calc(clamp(1rem, 3vh, 1.75rem) + 150px);
    right: 0.75rem;
    transform: none;
    flex-direction: row;
    max-width: calc(100vw - 1.5rem);
    max-height: none;
    overflow-x: auto;
    border-radius: 999px;
  }

  .planet-chip .chip-label {
    display: none;
  }

  .planet-chip {
    padding: 0.5rem;
  }

  .control-dock {
    flex-wrap: wrap;
    gap: 0.75rem;
    padding: 0.75rem;
  }

  .dock-group.transport {
    border-right: none;
    margin-right: 0;
    padding-right: 0;
  }

  .dock-group.speed {
    order: 3;
    flex: 1 1 100%;
    border-right: none;
    margin: 0;
    padding: 0.5rem 0 0;
    border-top: 1px solid color-mix(in oklab, var(--lunar) 10%, transparent);
  }

  .dock-group.toggles {
    flex-direction: row;
    flex-wrap: wrap;
    gap: 0.65rem;
    margin-left: auto;
  }

  .hint {
    display: none;
  }

  .panel-left {
    /* Hide full panel on very small when rail takes space — keep compact */
    padding: 0.85rem 1rem;
  }
}

@media (max-width: 480px) {
  .panel-left {
    display: none;
  }

  .planet-rail {
    left: 50%;
    right: auto;
    transform: translateX(-50%);
    bottom: calc(clamp(1rem, 3vh, 1.75rem) + 130px);
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

  .hint {
    display: none;
  }
}