:root {
  --chrome: rgba(17, 19, 22, 0.9);
  --chrome-solid: #14161a;
  --chrome-raised: rgba(255, 255, 255, 0.055);
  --hairline: rgba(255, 255, 255, 0.09);
  --hairline-soft: rgba(255, 255, 255, 0.045);
  --text: #d9dde2;
  --text-dim: #8a929c;
  --accent: #c9a76b;
  --accent-soft: rgba(201, 167, 107, 0.16);
  --ui: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", sans-serif;
  --mono: ui-monospace, "SF Mono", SFMono-Regular, Menlo, Consolas, monospace;
  --panel-w: 272px;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  height: 100%;
  overflow: hidden;
  background: #e3d9c8;
  color: var(--text);
  font-family: var(--ui);
  -webkit-font-smoothing: antialiased;
  overscroll-behavior: none;
}

#app { position: fixed; inset: 0; }

#view {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  display: block;
  cursor: grab;
  touch-action: none;
}

#view.is-dragging { cursor: grabbing; }

/* ---------------------------------------------------------------- *
 * Loading
 * ---------------------------------------------------------------- */

.loading {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  background:
    radial-gradient(120% 90% at 50% 20%, #efe6d5 0%, #ddd0ba 55%, #cdbca2 100%);
  z-index: 30;
  transition: opacity 620ms ease, visibility 620ms ease;
}

.loading.is-done { opacity: 0; visibility: hidden; }

.loading__inner { text-align: center; width: min(360px, 78vw); }

.loading__brand {
  margin: 0;
  font-size: 13px;
  letter-spacing: 0.42em;
  text-transform: uppercase;
  color: #4c473d;
}

.loading__sub {
  margin: 6px 0 26px;
  font-size: 10px;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: #8a8172;
}

.loading__track {
  height: 2px;
  background: rgba(76, 71, 61, 0.18);
  overflow: hidden;
}

.loading__track span {
  display: block;
  height: 100%;
  width: 0%;
  background: #6f6552;
  transition: width 260ms ease;
}

.loading__status {
  margin: 14px 0 0;
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.08em;
  color: #7b7364;
  min-height: 14px;
}

/* ---------------------------------------------------------------- *
 * Panel
 * ---------------------------------------------------------------- */

.inspector { position: absolute; inset: 0; pointer-events: none; }

.panel {
  pointer-events: auto;
  position: absolute;
  top: 14px;
  left: 14px;
  bottom: 14px;
  width: var(--panel-w);
  display: flex;
  flex-direction: column;
  background: var(--chrome);
  backdrop-filter: blur(16px) saturate(120%);
  -webkit-backdrop-filter: blur(16px) saturate(120%);
  border: 1px solid var(--hairline);
  border-radius: 12px;
  box-shadow: 0 18px 44px rgba(20, 16, 10, 0.28);
  transition: transform 420ms cubic-bezier(0.22, 0.9, 0.24, 1), opacity 320ms ease;
  overflow: hidden;
}

.panel.is-collapsed { transform: translateX(calc(-1 * var(--panel-w) - 22px)); opacity: 0; pointer-events: none; }
.inspector.panel-collapsed .panel-tab { opacity: 1; pointer-events: auto; }

.panel__brand {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 14px 14px 12px;
  border-bottom: 1px solid var(--hairline);
}

.brand__mark {
  width: 16px;
  height: 16px;
  flex: 0 0 auto;
  border: 1px solid var(--accent);
  border-radius: 2px;
  position: relative;
}

.brand__mark::after {
  content: "";
  position: absolute;
  inset: 3px 3px auto 3px;
  height: 1px;
  background: var(--accent);
  box-shadow: 0 4px 0 var(--accent), 0 8px 0 var(--accent);
}

.brand__text { flex: 1 1 auto; min-width: 0; }

.brand__title {
  margin: 0;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.24em;
  text-transform: uppercase;
}

.brand__sub {
  margin: 3px 0 0;
  font-size: 9px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--text-dim);
}

.panel__collapse {
  flex: 0 0 auto;
  width: 24px;
  height: 24px;
  display: grid;
  place-items: center;
  background: transparent;
  border: 1px solid var(--hairline);
  border-radius: 6px;
  color: var(--text-dim);
  font-size: 13px;
  line-height: 1;
  cursor: pointer;
  transition: background 140ms ease, color 140ms ease, border-color 140ms ease;
}

.panel__collapse:hover { background: var(--chrome-raised); color: var(--text); }
.panel__collapse:focus-visible { outline: 2px solid var(--accent); outline-offset: 1px; }

.panel-tab {
  pointer-events: auto;
  position: absolute;
  left: 0;
  top: 18px;
  padding: 9px 10px 9px 9px;
  background: var(--chrome);
  border: 1px solid var(--hairline);
  border-left: none;
  border-radius: 0 8px 8px 0;
  color: var(--text);
  font-size: 9px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  writing-mode: vertical-rl;
  cursor: pointer;
  transform: translateX(-1px);
  transition: opacity 240ms ease, background 140ms ease;
  opacity: 0;
  pointer-events: none;
}

.panel-tab:hover { background: #1c1f24; }
.panel-tab:focus-visible { outline: 2px solid var(--accent); outline-offset: 1px; }

/* sections */

.panel__section { border-bottom: 1px solid var(--hairline); display: flex; flex-direction: column; min-height: 0; }

.panel__section:nth-of-type(2) { flex: 1 1 auto; }

.section__head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  padding: 11px 14px;
  background: transparent;
  border: none;
  color: var(--text-dim);
  font-family: var(--ui);
  font-size: 9.5px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  cursor: pointer;
  transition: color 140ms ease;
}

.section__head:hover { color: var(--text); }
.section__head:focus-visible { outline: 2px solid var(--accent); outline-offset: -2px; }

.chevron { font-size: 10px; opacity: 0.7; transition: transform 220ms ease; }
.section__head[aria-expanded="false"] .chevron { transform: rotate(-90deg); }

.section__body { padding: 2px 14px 14px; overflow: auto; min-height: 0; }

/* stats */

.stats { margin: 0; display: grid; gap: 7px; }

.stat { display: flex; align-items: baseline; justify-content: space-between; gap: 10px; }

.stat dt {
  font-size: 9.5px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--text-dim);
}

.stat dd {
  margin: 0;
  font-family: var(--mono);
  font-size: 11px;
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.02em;
}

.stat--wide { padding-top: 7px; border-top: 1px solid var(--hairline-soft); flex-wrap: wrap; }
.stat--wide dd { font-size: 9.5px; color: var(--text-dim); letter-spacing: 0.08em; text-transform: uppercase; }

/* hint + keys */

.hint {
  margin: 2px 0 10px;
  font-size: 10px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
}

.keyhints { display: grid; gap: 5px; margin-bottom: 14px; }

.keyhints__row { display: flex; justify-content: space-between; gap: 8px; }

.keyhints__keys {
  font-family: var(--mono);
  font-size: 9.5px;
  color: var(--text);
  white-space: nowrap;
}

.keyhints__mean { font-size: 9.5px; color: var(--text-dim); text-align: right; }

/* toggles */

.toggles { list-style: none; margin: 0; padding: 0; display: grid; gap: 1px; }

.toggle {
  display: flex;
  align-items: center;
  gap: 9px;
  padding: 6px 7px;
  margin: 0 -7px;
  border-radius: 7px;
  cursor: pointer;
  transition: background 130ms ease;
}

.toggle:hover { background: var(--chrome-raised); }

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

.toggle__box {
  flex: 0 0 auto;
  width: 13px;
  height: 13px;
  border: 1px solid rgba(255, 255, 255, 0.24);
  border-radius: 3px;
  position: relative;
  transition: background 130ms ease, border-color 130ms ease;
}

.toggle__box::after {
  content: "";
  position: absolute;
  left: 3px;
  top: 0.5px;
  width: 4px;
  height: 7px;
  border: solid #14161a;
  border-width: 0 1.6px 1.6px 0;
  transform: rotate(42deg) scale(0.4);
  opacity: 0;
  transition: opacity 120ms ease, transform 120ms ease;
}

.toggle input:checked + .toggle__box { background: var(--accent); border-color: var(--accent); }
.toggle input:checked + .toggle__box::after { opacity: 1; transform: rotate(42deg) scale(1); }
.toggle input:focus-visible + .toggle__box { outline: 2px solid var(--accent); outline-offset: 2px; }
.toggle:hover .toggle__box { border-color: rgba(255, 255, 255, 0.45); }

.toggle__text { display: grid; gap: 1px; min-width: 0; }

.toggle__label { font-size: 11px; letter-spacing: 0.03em; }

.toggle__meta {
  font-size: 8.5px;
  letter-spacing: 0.05em;
  color: var(--text-dim);
  text-transform: uppercase;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

/* footer */

.panel__foot {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  padding: 11px 14px;
  margin-top: auto;
}

.action {
  padding: 6px 11px;
  background: transparent;
  border: 1px solid var(--hairline);
  border-radius: 7px;
  color: var(--text);
  font-family: var(--ui);
  font-size: 9.5px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  cursor: pointer;
  transition: background 140ms ease, border-color 140ms ease, color 140ms ease;
}

.action:hover { background: var(--chrome-raised); border-color: rgba(255, 255, 255, 0.2); }
.action:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }

.drift {
  font-family: var(--mono);
  font-size: 8.5px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-dim);
}

.drift.is-active { color: var(--accent); }

/* ---------------------------------------------------------------- *
 * Top bar
 * ---------------------------------------------------------------- */

.topbar {
  pointer-events: auto;
  position: absolute;
  top: 14px;
  left: calc(var(--panel-w) + 26px);
  right: 14px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  transition: left 420ms cubic-bezier(0.22, 0.9, 0.24, 1);
}

.inspector.panel-collapsed .topbar { left: 44px; }

.segmented,
.lighting {
  display: flex;
  gap: 2px;
  padding: 3px;
  background: var(--chrome);
  backdrop-filter: blur(14px) saturate(120%);
  -webkit-backdrop-filter: blur(14px) saturate(120%);
  border: 1px solid var(--hairline);
  border-radius: 9px;
  box-shadow: 0 10px 26px rgba(20, 16, 10, 0.2);
}

.segment,
.light {
  padding: 7px 13px;
  background: transparent;
  border: none;
  border-radius: 6px;
  color: var(--text-dim);
  font-family: var(--ui);
  font-size: 9.5px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  cursor: pointer;
  transition: background 150ms ease, color 150ms ease;
}

.segment:hover,
.light:hover { background: var(--chrome-raised); color: var(--text); }

.segment:focus-visible,
.light:focus-visible { outline: 2px solid var(--accent); outline-offset: 1px; }

.segment[aria-pressed="true"],
.light[aria-pressed="true"] {
  background: var(--accent);
  color: #191712;
}

/* ---------------------------------------------------------------- *
 * Floating hint
 * ---------------------------------------------------------------- */

.viewhint {
  position: absolute;
  right: 16px;
  bottom: 16px;
  margin: 0;
  padding: 7px 12px;
  background: var(--chrome);
  border: 1px solid var(--hairline);
  border-radius: 999px;
  font-size: 9.5px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--text-dim);
  pointer-events: none;
  transition: opacity 600ms ease;
}

.viewhint.is-hidden { opacity: 0; }

/* ---------------------------------------------------------------- *
 * Small viewports
 * ---------------------------------------------------------------- */

@media (max-width: 860px) {
  :root { --panel-w: min(92vw, 360px); }

  .panel {
    top: auto;
    left: 10px;
    right: 10px;
    bottom: 10px;
    width: auto;
    max-height: 52vh;
  }

  .panel.is-collapsed {
    transform: translateY(calc(100% + 16px));
    opacity: 0;
  }

  .panel-tab {
    top: auto;
    bottom: 0;
    left: 12px;
    writing-mode: horizontal-tb;
    border-radius: 8px 8px 0 0;
    border: 1px solid var(--hairline);
    border-bottom: none;
    padding: 8px 14px;
  }

  .topbar {
    top: 10px;
    left: 10px;
    right: 10px;
    flex-wrap: wrap;
    justify-content: flex-start;
    gap: 8px;
  }

  .segmented { flex-wrap: wrap; }

  .inspector.panel-collapsed .topbar { left: 10px; }

  .segment, .light { padding: 11px 14px; min-height: 42px; }

  .toggle { padding: 8px 7px; min-height: 44px; }

  .viewhint { display: none; }

  .keyhints { display: none; }
}

@media (prefers-reduced-motion: reduce) {
  .panel, .topbar { transition: none; }
}