/* Cucamonga flap tiles — component styles
   Pairs with flap_controller.js (Stimulus). Spec: BRAND.md §4–5. */

.flapline {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
  align-items: center;
}

.flap {
  position: relative;
  width: 46px;
  height: 60px;
  border-radius: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  perspective: 280px;
  background: linear-gradient(
    180deg,
    var(--board-hi) 0%,
    var(--board) 48%,
    var(--board-lo) 52%,
    #1A1B1F 100%
  );
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.07),
    0 3px 5px rgba(20, 21, 24, 0.30);
}

.flap .ch {
  display: block;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 32px;
  line-height: 1;
  color: var(--flap-white);
  transform-origin: center center;
  backface-visibility: hidden;
}

/* split line */
.flap::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  top: 50%;
  height: 1px;
  background: rgba(0, 0, 0, 0.75);
}

/* hinge nubs */
.flap .hinge {
  position: absolute;
  top: 50%;
  width: 3px;
  height: 7px;
  transform: translateY(-50%);
  border-radius: 2px;
  background: #3A3B41;
}
.flap .hinge.l { left: 0; }
.flap .hinge.r { right: 0; }

@media (max-width: 640px) {
  .flapline { gap: 4px; }
  .flap { width: 30px; height: 41px; border-radius: 4px; }
  .flap .ch { font-size: 20px; }
}

/* flutter: one half-flip per letter change (~92ms tick) */
.flap .ch.spin { animation: flap-halfflip 0.09s linear; }
@keyframes flap-halfflip {
  0%   { transform: rotateX(0deg); }
  49%  { transform: rotateX(-88deg); }
  51%  { transform: rotateX(88deg); }
  100% { transform: rotateX(0deg); }
}

/* landing: overshoot settle */
.flap .ch.settle { animation: flap-settle 0.24s cubic-bezier(0.2, 0.9, 0.3, 1.15); }
@keyframes flap-settle {
  0%   { transform: rotateX(80deg); }
  70%  { transform: rotateX(-9deg); }
  100% { transform: rotateX(0deg); }
}

@media (prefers-reduced-motion: reduce) {
  .flap .ch.spin,
  .flap .ch.settle { animation: none; }
}