/* Flex activation is a single, short sequence. Direct slider input stays instant. */
#calculator {
  position: relative;
  isolation: isolate;
  --flex-engage: 500ms;
  --flex-control: 250ms;
  --flex-stagger: 50ms;
}
#flex-toggle {
  background: var(--sage);
  transition: color var(--flex-control) var(--ease-out);
}
#flex-toggle::before {
  content: '';
  position: absolute;
  inset: 0;
  z-index: -1;
  border-radius: inherit;
  background: linear-gradient(90deg, #173d35, #225940);
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--flex-control) var(--ease-out);
}
#flex-toggle[aria-pressed="true"]::before { opacity: 1; }
.nightly-rate-control > :is(label, .rate-optimisation) {
  visibility: visible;
  opacity: 1;
  transform: translateY(0);
  transition:
    opacity var(--flex-control) var(--ease-out),
    transform var(--flex-control) var(--ease-out),
    visibility 0s;
}
.nightly-rate-control > [aria-hidden="true"] {
  visibility: hidden;
  opacity: 0;
  transform: translateY(4px);
  transition-delay: 0s, 0s, var(--flex-control);
}
.flex-activation-wave {
  position: absolute;
  z-index: 5;
  width: 80px;
  height: 80px;
  border-radius: 50%;
  pointer-events: none;
  background: radial-gradient(circle, transparent 36%, #dfeabc0d 46%, #c6ec9870 58%, #efffd6b8 66%, transparent 73%);
  transform: translate(-50%, -50%) scale(.95);
  opacity: .65;
  transition: transform var(--flex-engage) var(--ease-out), opacity var(--flex-engage) linear;
}

.flex-benefits li {
  position: relative;
  isolation: isolate;
  transform: translateY(0) scale(1);
  opacity: 1;
  transition: transform var(--flex-control) var(--ease-out), opacity var(--flex-control) var(--ease-out);
  transition-delay: var(--benefit-delay, 0ms);
}
.flex-benefits li:nth-child(2) { --benefit-delay: var(--flex-stagger); }
.flex-benefits li:nth-child(3) { --benefit-delay: calc(var(--flex-stagger) * 2); }
.flex-off .flex-benefits li {
  opacity: .5;
  transform: translateY(3px) scale(.97);
  transition-delay: 0ms;
}
.flex-benefits li::after {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: inherit;
  box-shadow: inset 0 0 0 1px #f4ffd9, 0 0 14px #a7d77d99;
  pointer-events: none;
  opacity: 0;
  transition: opacity var(--flex-control) var(--ease-out);
  transition-delay: var(--benefit-delay, 0ms);
}
[data-flex-activating] .flex-benefits li::after { opacity: 1; }

.occupancy-fill {
  position: absolute;
  inset: 0;
  border-radius: inherit;
  background: var(--line);
  transform: scaleX(.666667);
  transform-origin: left center;
  transition: transform var(--flex-engage) var(--ease-out);
}
.occupancy-fill::after {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: inherit;
  background: linear-gradient(90deg, #51756a, #9abd75 65%, #dfeabc);
  box-shadow: 0 0 8px #a7d77d88, 0 0 18px #a7d77d38;
  opacity: 1;
  transition: opacity var(--flex-control) var(--ease-out);
}
.occupancy-thumb {
  display: none;
  position: absolute;
  left: 0;
  top: 4px;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: url('../../assets/figma/drag-handle.svg') center no-repeat;
  pointer-events: none;
  transition: transform var(--flex-engage) var(--ease-out);
}
.occupancy-slider.is-enhanced .occupancy-thumb { display: block; }
.occupancy-slider.is-enhanced input::-webkit-slider-thumb { background: transparent; }
.occupancy-slider.is-enhanced input::-moz-range-thumb { background: transparent; }
.occupancy-thumb::before {
  content: '';
  position: absolute;
  inset: -10px;
  z-index: -1;
  border-radius: inherit;
  background: radial-gradient(circle, #c6ed9877 20%, #9ad97633 50%, transparent 72%);
  box-shadow: 0 0 16px #a7d77d44;
  opacity: .6;
  transform: scale(.95);
  transition: transform var(--flex-control) var(--ease-out), opacity var(--flex-control) var(--ease-out);
}
.flex-off .occupancy-fill::after,
.flex-off .occupancy-thumb::before { opacity: 0; }
[data-flex-activating] .occupancy-thumb::before,
#calculator:not(.flex-off) .occupancy-slider:has(input:active) .occupancy-thumb::before {
  transform: scale(1.3);
  opacity: 1;
}
[data-slider-immediate] :is(.occupancy-fill, .occupancy-thumb) { transition: none; }
@media (prefers-reduced-motion: reduce) {
  .flex-activation-wave { display: none; }
  #flex-toggle,
  #flex-toggle::before,
  .nightly-rate-control > :is(label, .rate-optimisation),
  .flex-benefits li,
  .flex-benefits li::after,
  .occupancy-fill,
  .occupancy-fill::after,
  .occupancy-thumb,
  .occupancy-thumb::before { transition: none !important; }
  .flex-benefits li { transform: none; }
}
@media (forced-colors: active) {
  #flex-toggle::before,
  .flex-activation-wave,
  .flex-benefits li::after,
  .occupancy-fill::after,
  .occupancy-thumb::before { display: none; }
  .occupancy-fill { background: Highlight; }
  .occupancy-slider input { appearance: none; }
  .occupancy-thumb { background: Canvas; border: 3px solid Highlight; }
}

/* Supplied sliding-tab motion, using the existing Flex colours and dimensions. */
:root {
  --tabs-dur: 250ms;
  --tabs-ease: cubic-bezier(0.22, 1, 0.36, 1);
}
.calculator-segments {
  position: relative;
  isolation: isolate;
  --tabs-pill-bg: var(--panel-secondary);
}
.calculator-segments .t-tab {
  position: relative;
  z-index: 1;
  transition: color var(--tabs-dur) var(--tabs-ease);
}
.calculator-segments .calculator-selection {
  position: absolute;
  inset: 0 auto auto 0;
  z-index: 0;
  border-radius: var(--segment-inner-radius);
  background: var(--tabs-pill-bg);
  pointer-events: none;
  transition:
    transform var(--tabs-dur) var(--tabs-ease),
    width var(--tabs-dur) var(--tabs-ease);
  will-change: transform, width;
}
.calculator-segments button[aria-pressed="true"] {
  background: transparent;
}
.calculator-segments[data-selection-immediate] :is(.calculator-selection, .t-tab) {
  transition: none;
}

@media (prefers-reduced-motion: reduce) {
  .calculator-segments :is(.calculator-selection, .t-tab) { transition: none !important; }
}
@media (forced-colors: active) {
  .calculator-segments .calculator-selection { display: none; }
  .calculator-segments button[aria-pressed="true"] {
    background: Highlight;
    color: HighlightText;
  }
}

/* User-supplied Number pop-in: exact timing, distance, stagger, blur and curve. */
#numbers {
  --digit-dur: 500ms;
  --digit-distance: 8px;
  --digit-stagger: 70ms;
  --digit-blur: 2px;
  --digit-ease: cubic-bezier(.34, 1.45, .64, 1);
  --digit-dir-x: 0;
  --digit-dir-y: 1;
}
.t-digit-group { display: inline-flex; align-items: baseline; flex-wrap: wrap; max-width: 100%; }
.t-digit { display: inline-block; }
.t-digit::before { content: attr(data-digit); }
.is-animating .t-digit[data-changed] {
  animation: t-digit-pop-in var(--digit-dur) var(--digit-ease) both;
}
.is-animating .t-digit[data-changed][data-stagger="1"] { animation-delay: var(--digit-stagger); }
.is-animating .t-digit[data-changed][data-stagger="2"] { animation-delay: calc(var(--digit-stagger) * 2); }
@keyframes t-digit-pop-in {
  0% {
    transform: translate(calc(var(--digit-distance) * var(--digit-dir-x)), calc(var(--digit-distance) * var(--digit-dir-y)));
    opacity: 0;
    filter: blur(var(--digit-blur));
  }
  100% { transform: translate(0, 0); opacity: 1; filter: blur(0); }
}
@media (prefers-reduced-motion: reduce) {
  .is-animating .t-digit[data-changed] { animation: none; }
}