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

html, body {
  width: 100%;
  height: 100%;
  overflow: hidden;
  background: #000510;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

#canvas {
  display: block;
  width: 100%;
  height: 100%;
  touch-action: none;
}

.loader {
  position: fixed;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 18px;
  background: #000510;
  color: #9DA4B1;
  z-index: 10;
  transition: opacity 0.6s ease;
}

.loader.is-hidden { opacity: 0; pointer-events: none; }

.loader__spinner {
  width: 38px;
  height: 38px;
  border: 3px solid rgba(157, 164, 177, 0.2);
  border-top-color: #9DA4B1;
  border-radius: 50%;
  animation: spin 0.9s linear infinite;
}

.loader__label { font-size: 13px; letter-spacing: 0.04em; }

@keyframes spin { to { transform: rotate(360deg); } }

.hint {
  position: fixed;
  left: 50%;
  bottom: 26px;
  transform: translateX(-50%);
  padding: 9px 16px;
  border-radius: 999px;
  background: rgba(11, 14, 17, 0.55);
  border: 1px solid rgba(157, 164, 177, 0.18);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  color: #9DA4B1;
  font-size: 12px;
  letter-spacing: 0.02em;
  white-space: nowrap;
  z-index: 9;
  opacity: 0;
  transition: opacity 0.8s ease;
}

.hint.is-visible { opacity: 1; }
.hint.is-faded { opacity: 0; pointer-events: none; }

.error[hidden] { display: none; }

.error {
  position: fixed;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 8px;
  text-align: center;
  padding: 24px;
  background: #000510;
  color: #EEF1F6;
  z-index: 11;
}

.error small { color: #9DA4B1; }

@media (max-width: 480px) {
  .hint { font-size: 11px; white-space: normal; text-align: center; max-width: 88vw; }
}

.light-tool {
  position: fixed;
  top: 14px;
  right: 14px;
  width: 290px;
  padding: 10px 12px;
  border-radius: 10px;
  background: rgba(11, 14, 17, 0.82);
  border: 1px solid rgba(157, 164, 177, 0.22);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  color: #cfd6e2;
  font: 12px/1.4 ui-monospace, SFMono-Regular, Menlo, monospace;
  z-index: 12;
  user-select: none;
}

.light-tool__head {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 8px;
  font-size: 11px;
  color: #9DA4B1;
}

.light-tool__head span { flex: 1; }

.light-tool__btn {
  cursor: pointer;
  border: 1px solid rgba(157, 164, 177, 0.3);
  background: transparent;
  color: #cfd6e2;
  border-radius: 6px;
  padding: 3px 8px;
  font: inherit;
}

.light-tool__btn:hover { background: rgba(157, 164, 177, 0.15); }

.light-tool__row {
  display: grid;
  grid-template-columns: 26px 1fr auto;
  grid-template-areas: "sel pos pos" "sel int val";
  align-items: center;
  gap: 4px 8px;
  padding: 7px 0;
  border-top: 1px solid rgba(157, 164, 177, 0.12);
}

.light-tool__row.is-active { background: rgba(157, 164, 177, 0.08); }

.light-tool__sel {
  grid-area: sel;
  width: 24px;
  height: 24px;
  border-radius: 6px;
  border: 2px solid transparent;
  color: #000;
  font-weight: 700;
  cursor: pointer;
}

.light-tool__row.is-active .light-tool__sel { border-color: #fff; }
.light-tool__pos { grid-area: pos; color: #aeb6c2; }

.pix-tool {
  position: fixed;
  top: 14px;
  left: 14px;
  width: 230px;
  padding: 10px 12px;
  border-radius: 10px;
  background: rgba(11, 14, 17, 0.82);
  border: 1px solid rgba(157, 164, 177, 0.22);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  color: #cfd6e2;
  font: 12px/1.4 ui-monospace, SFMono-Regular, Menlo, monospace;
  z-index: 12;
  user-select: none;
}

.pix-tool.is-off { opacity: 0.6; }

#leftTools {
  position: fixed;
  top: 14px;
  left: 14px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  z-index: 12;
}
#leftTools .pix-tool {
  position: relative !important;
  top: auto !important;
  left: auto !important;
}
.beam-tool .pix-tool__row { margin-top: 6px; }
.bm-pos { flex: 1; color: #aeb6c2; font-size: 11px; }
.pix-tool__btns { display: flex; gap: 6px; margin-top: 8px; }
.pix-tool__btns .pix-tool__btn { flex: 1; }

.pix-tool__head {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 8px;
  font-size: 11px;
  color: #9DA4B1;
}

.pix-tool__head span { flex: 1; }
.pix-tool__chk { display: flex; align-items: center; gap: 5px; cursor: pointer; }
.pix-tool__chk input { accent-color: #6f8cff; cursor: pointer; }
.pix-tool__row { display: flex; align-items: center; gap: 8px; }
.pix-tool__row span { width: 34px; color: #9DA4B1; }
.pix-tool__row input { flex: 1; accent-color: #6f8cff; }
.pix-tool__row input:disabled { opacity: 0.4; }
.pix-tool__row code { min-width: 34px; text-align: right; color: #8a93a3; }
.pix-tool__row input[type="color"] {
  flex: 0 0 auto;
  width: 38px;
  height: 20px;
  padding: 0;
  border: 1px solid rgba(157, 164, 177, 0.3);
  border-radius: 4px;
  background: none;
  cursor: pointer;
}

.pix-tool__btn {
  cursor: pointer;
  border: 1px solid rgba(157, 164, 177, 0.3);
  background: transparent;
  color: #cfd6e2;
  border-radius: 6px;
  padding: 3px 8px;
  font: inherit;
}
.pix-tool__btn:hover { background: rgba(157, 164, 177, 0.15); }
.pix-tool__btn.is-active { background: rgba(111, 140, 255, 0.2); border-color: rgba(111, 140, 255, 0.55); }

.light-tool__int { grid-area: int; width: 100%; accent-color: #6f8cff; }
.light-tool__intval { grid-area: val; color: #8a93a3; min-width: 34px; text-align: right; }

.cam-tool { top: auto; bottom: 14px; left: 14px; width: 260px; }

.save-tool {
  position: fixed;
  bottom: 14px;
  right: 14px;
  display: flex;
  gap: 6px;
  z-index: 12;
}
.cam-tool__vals {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 6px;
  margin-bottom: 10px;
}
.cam-tool__val {
  background: rgba(255,255,255,0.04);
  border-radius: 4px;
  padding: 6px 8px;
  text-align: center;
}
.cam-tool__val-label { font-size: 9px; letter-spacing: 0.1em; color: #9DA4B1; display: block; margin-bottom: 3px; }
.cam-tool__val-num   { font-size: 13px; color: #cfd6e2; font-weight: 500; }
.cam-tool__divider   { border: none; border-top: 1px solid rgba(157,164,177,0.12); margin: 8px 0; }
.cam-tool__limit-row { display: flex; align-items: center; gap: 6px; margin-bottom: 6px; }
.cam-tool__limit-row label { font-size: 10px; color: #9DA4B1; width: 52px; flex-shrink: 0; }
.cam-tool__limit-row input[type=range] { flex: 1; accent-color: #6f8cff; }
.cam-tool__limit-row code { font-size: 10px; color: #8a93a3; min-width: 26px; text-align: right; }
.cam-tool__locked { color: #22c55e; font-size: 10px; letter-spacing: 0.08em; }
.cam-tool__warn   { color: #f59e0b; font-size: 10px; letter-spacing: 0.08em; }