/* ==========================================================================
   Isolated Floating Advanced Color Picker System
   ========================================================================== */
:root {
  --p-hue: 0;
  --p-alpha: 1.0;
}

.color-picker-popover {
  display: none;
  position: absolute;
  z-index: 1500;
  background: #FFFFFF;
  width: 320px;
  border-radius: 12px;
  box-shadow: 0 10px 25px -5px rgba(0,0,0,0.1), 0 8px 10px -6px rgba(0,0,0,0.1);
  padding: 14px;
  box-sizing: border-box;
  border: 1px solid #E2E8F0;
}

.color-picker-popover.active {
  display: block;
}

/* Saturation & Value Mapping Grid Area */
.picker-main {
  width: 100%;
  height: 160px;
  position: relative;
  border-radius: 8px;
  overflow: hidden;
  cursor: crosshair;
  background-image: linear-gradient(45deg, #E2E8F0 25%, transparent 25%), 
                    linear-gradient(-45deg, #E2E8F0 25%, transparent 25%), 
                    linear-gradient(45deg, transparent 75%, #E2E8F0 75%), 
                    linear-gradient(-45deg, transparent 75%, #E2E8F0 75%);
  background-size: 12px 12px;
}

.picker-main::before {
  content: "";
  position: absolute;
  top: 0; left: 0; right: 0; bottom: 0;
  background: linear-gradient(to bottom, transparent, #000000),
              linear-gradient(to right, #FFFFFF, hsl(var(--p-hue), 100%, 50%));
  background-blend-mode: multiply;
  opacity: var(--p-alpha);
}

.picker-pointer {
  width: 16px;
  height: 16px;
  border: 2px solid #000000;
  border-radius: 50%;
  position: absolute;
  transform: translate(-50%, -50%);
  pointer-events: none;
  box-shadow: 0 0 0 1px #FFFFFF;
}

/* Slider Custom Track Configurations */
.slider-container {
  position: relative;
  margin-top: 12px;
  height: 20px;
  border-radius: 10px;
}

.picker-slider {
  -webkit-appearance: none;
  appearance: none;
  width: 100%;
  height: 100%;
  background: transparent;
  position: absolute;
  top: 0; left: 0;
  margin: 0;
  cursor: pointer;
}

.picker-slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 22px;
  height: 22px;
  border: 2px solid #000000;
  border-radius: 50%;
  background: transparent;
  box-shadow: 0 0 0 1px #FFFFFF;
}

.hue-slider {
  background: linear-gradient(to right, #FF0000 0%, #FFFF00 17%, #00FF00 33%, #00FFFF 50%, #0000FF 67%, #FF00FF 83%, #FF0000 100%);
  border-radius: 10px;
}

/* Transparency Checkerboard Layout Layer */
.alpha-slider-bg {
  position: absolute;
  width: 100%;
  height: 100%;
  border-radius: 10px;
  background-image: linear-gradient(45deg, #E2E8F0 25%, transparent 25%), 
                    linear-gradient(-45deg, #E2E8F0 25%, transparent 25%), 
                    linear-gradient(45deg, transparent 75%, #E2E8F0 75%), 
                    linear-gradient(-45deg, transparent 75%, #E2E8F0 75%);
  background-size: 10px 10px;
}

.alpha-slider-bg::after {
  content: "";
  position: absolute;
  top: 0; left: 0; width: 100%; height: 100%;
  background: linear-gradient(to right, transparent, hsl(var(--p-hue), 100%, 50%));
  border-radius: 10px;
}

/* Operational Format Tab Rows */
.format-tabs {
  display: flex;
  justify-content: space-between;
  margin-top: 14px;
}

.tab-btn {
  background: transparent;
  border: none;
  font-size: 12px;
  color: #64748B;
  cursor: pointer;
  padding: 4px 10px;
  border-radius: 6px;
  font-weight: 600;
}

.tab-btn.active {
  background: #F1F5F9;
  color: #1E293B;
}

/* Bottom Output Row Blocks */
.picker-footer {
  display: flex;
  align-items: center;
  margin-top: 14px;
  gap: 8px;
}

.preview-box {
  width: 38px;
  height: 32px;
  border-radius: 6px;
  border: 1px solid #E2E8F0;
  background-image: linear-gradient(45deg, #E2E8F0 25%, transparent 25%), 
                    linear-gradient(-45deg, #E2E8F0 25%, transparent 25%), 
                    linear-gradient(45deg, transparent 75%, #E2E8F0 75%), 
                    linear-gradient(-45deg, transparent 75%, #E2E8F0 75%);
  background-size: 6px 6px;
  position: relative;
  overflow: hidden;
}

.preview-box-fill {
  width: 100%;
  height: 100%;
  border-radius: 5px;
}

.color-output {
  flex-grow: 1;
  background: #F8FAFC;
  border: 1px solid #E2E8F0;
  border-radius: 6px;
  padding: 6px 10px;
  font-family: monospace;
  font-size: 12px;
  color: #1E293B;
  outline: none;
}

.action-btn {
  background: #FFFFFF;
  border: 1px solid #E2E8F0;
  border-radius: 6px;
  height: 32px;
  width: 36px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
}

.action-btn:hover {
  background: #F8FAFC;
}