.screen-ruler-wrap {
  position: absolute;
  top: 50%;
  right: 18px;
  width: 76px;
  max-height: calc(100% - 190px);
  transform: translateY(-50%);
  pointer-events: auto;
  display: grid;
  grid-template-columns: 1fr;
  grid-template-rows: auto minmax(0, 1fr) auto;
  gap: 8px;
  z-index: 4;
}

.screen-ruler-label,
.screen-ruler-actions {
  color: #fff;
  background: rgba(15, 23, 42, 0.78);
  border: 1px solid rgba(255,255,255,0.16);
  border-radius: 12px;
  box-shadow: 0 12px 30px rgba(0,0,0,0.34);
  backdrop-filter: blur(12px);
}

.screen-ruler-label {
  padding: 8px;
  text-align: center;
  font-size: 11px;
  font-weight: 800;
  line-height: 1.15;
  text-transform: uppercase;
}

.screen-ruler-label span {
  display: block;
}

.screen-ruler-label span + span {
  margin-top: 2px;
  color: rgba(255,255,255,0.72);
  font-size: 9px;
}

.screen-ruler {
  position: relative;
  min-height: 0;
  height: 100%;
  border-radius: 10px;
  background:
    linear-gradient(90deg, rgba(255, 255, 255, 0.92), rgba(241, 245, 249, 0.92)),
    repeating-linear-gradient(180deg, rgba(15,23,42,0.08) 0 1px, transparent 1px 8px);
  border: 2px solid rgba(15, 23, 42, 0.88);
  box-shadow: 0 18px 38px rgba(0,0,0,0.38);
  overflow: hidden;
}

.screen-ruler::before {
  content: "";
  position: absolute;
  top: 0;
  bottom: 0;
  left: 16px;
  width: 2px;
  background: #0f172a;
  opacity: 0.92;
}

.screen-ruler-tick {
  position: absolute;
  left: 16px;
  width: 18px;
  height: 1px;
  background: #0f172a;
  transform: translateY(-50%);
}

.screen-ruler-tick-quarter {
  width: 25px;
}

.screen-ruler-tick-half {
  width: 34px;
  height: 2px;
}

.screen-ruler-tick-inch {
  width: 48px;
  height: 2px;
}

.screen-ruler-tick span {
  position: absolute;
  left: 52px;
  top: 50%;
  transform: translateY(-50%);
  color: #0f172a;
  font-size: 12px;
  font-weight: 900;
  line-height: 1;
}

.screen-ruler-actions {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 4px;
  padding: 5px;
}

.screen-ruler-actions button {
  min-height: 30px;
  border: 0;
  border-radius: 8px;
  color: rgba(255,255,255,0.82);
  background: rgba(255,255,255,0.12);
  font-size: 10px;
  font-weight: 900;
}

.screen-ruler-actions button.active {
  color: #0f172a;
  background: #ffffff;
}

@media (max-width: 640px) {
  .screen-ruler-wrap {
    right: 10px;
    width: 70px;
    max-height: calc(100% - 178px);
  }
}