/* Polar Fan Arc Selector Engine */
.fan-picker {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: flex-start;
  padding: 4px 0;
}

.sidebar:not(.expanded) .fan-picker {
  justify-content: center;
}

/* Core activator trigger */
.fan-core-btn {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  border: 2px solid rgba(255, 255, 255, 0.95);
  background: var(--accent);
  box-shadow: 0 3px 10px rgba(0, 0, 0, 0.12);
  cursor: pointer;
  display: grid;
  place-items: center;
  position: relative;
  z-index: 50;
  transition: transform 0.15s ease, box-shadow 0.15s ease;
  touch-action: none;
  user-select: none;
}

.fan-core-btn:hover {
  transform: scale(1.06);
}

.fan-core-btn svg {
  width: 17px;
  height: 17px;
  stroke: #ffffff;
  transition: transform 0.22s ease;
}

.fan-arc[data-open] .fan-core-btn svg {
  transform: rotate(45deg);
}

/* Fan container & polar placement */
.fan-arc {
  position: relative;
  width: 36px;
  height: 36px;
}

.fan-opts-layer {
  position: absolute;
  top: 0;
  left: 0;
  width: 36px;
  height: 36px;
  pointer-events: none;
  z-index: 40;
}

.fan-arc[data-open] .fan-opts-layer {
  pointer-events: auto;
}

/* Fan option circle */
.fan-opt {
  position: absolute;
  top: 0;
  left: 0;
  width: 34px;
  height: 34px;
  border-radius: 50%;
  border: 2.5px solid #ffffff;
  box-shadow: 0 4px 14px rgba(0, 0, 0, 0.18);
  cursor: pointer;
  transform: translate(calc(cos(var(--a)) * var(--radius)), calc(sin(var(--a)) * var(--radius)));
  transition: transform 0.2s cubic-bezier(0.34, 1.56, 0.64, 1),
              opacity 0.18s ease,
              scale 0.15s ease,
              box-shadow 0.15s ease;
  transition-delay: calc(var(--i) * 25ms);
  display: grid;
  place-items: center;
  opacity: 1;
}

/* Fan deploys UPWARD and RIGHTWARD above the button */
/* Angles strictly from -110deg (up-left) to -10deg (up-right) */
.sidebar.expanded .fan-opt {
  --spread: 95deg;
  --radius: 72px;
  --a: calc(-105deg + (var(--spread) / (var(--n) - 1)) * var(--i));
}

/* In compact icon mode: fan radiates UP and RIGHT into the canvas */
.sidebar:not(.expanded) .fan-opt {
  --spread: 85deg;
  --radius: 74px;
  --a: calc(-90deg + (var(--spread) / (var(--n) - 1)) * var(--i));
}

/* Closed state */
.fan-arc:not([data-open]) .fan-opt {
  transform: translate(0, 0) !important;
  scale: 0.2;
  opacity: 0;
  pointer-events: none;
  transition-delay: 0ms;
}

.fan-opt:hover,
.fan-opt.aimed {
  scale: 1.25;
  box-shadow: 0 0 0 3px var(--accent), 0 6px 16px rgba(0, 0, 0, 0.24);
  z-index: 60;
}

.fan-opt.active {
  box-shadow: 0 0 0 2px #ffffff, 0 0 0 4px var(--accent);
}

.fan-opt[data-theme="calm-slate"] { background: #94a3b8; }
.fan-opt[data-theme="nordic-blue"] { background: #3b82f6; }
.fan-opt[data-theme="sage-focus"] { background: #4ade80; }
.fan-opt[data-theme="warm-amber"] { background: #fb923c; }
.fan-opt[data-theme="executive-dark"] { background: #334155; }