/* "The Watercolor Bloom" – home page slider.
   The next slide soaks in like wet watercolor from the point that was clicked: a soft, lumpy mask made of
   five circles grows from that point (--x / --y) until it covers the whole stage (--r). */
@property --r { syntax: '<length>'; inherits: true; initial-value: 0px; }
@property --p { syntax: '<percentage>'; inherits: true; initial-value: 0%; }

.wb { position: relative; isolation: isolate; overflow: hidden; min-height: min(86vh, 820px); display: grid; grid-template-columns: minmax(0, 1fr); grid-template-rows: 1fr auto; padding-top: clamp(30px, 5vw, 64px); }

/* ----- stage: every slide is a full layer (colour wash + the painting on its sheet of paper) ----- */
.wb__stage { position: absolute; inset: 0; z-index: -1; cursor: pointer; }
.wb__slide { position: absolute; inset: 0; visibility: hidden; --x: 70%; --y: 50%; }
.wb__slide.is-on { visibility: visible; z-index: 1; }
.wb__slide.is-in { visibility: visible; z-index: 2;
  -webkit-mask-image:
    radial-gradient(circle at var(--x) var(--y), #000 calc(var(--r) * .7), transparent var(--r)),
    radial-gradient(circle at calc(var(--x) + var(--r) * .46) calc(var(--y) - var(--r) * .34), #000 calc(var(--r) * .36), transparent calc(var(--r) * .58)),
    radial-gradient(circle at calc(var(--x) - var(--r) * .5) calc(var(--y) + var(--r) * .28), #000 calc(var(--r) * .4), transparent calc(var(--r) * .62)),
    radial-gradient(circle at calc(var(--x) + var(--r) * .18) calc(var(--y) + var(--r) * .56), #000 calc(var(--r) * .3), transparent calc(var(--r) * .5)),
    radial-gradient(circle at calc(var(--x) - var(--r) * .3) calc(var(--y) - var(--r) * .56), #000 calc(var(--r) * .28), transparent calc(var(--r) * .48));
  mask-image:
    radial-gradient(circle at var(--x) var(--y), #000 calc(var(--r) * .7), transparent var(--r)),
    radial-gradient(circle at calc(var(--x) + var(--r) * .46) calc(var(--y) - var(--r) * .34), #000 calc(var(--r) * .36), transparent calc(var(--r) * .58)),
    radial-gradient(circle at calc(var(--x) - var(--r) * .5) calc(var(--y) + var(--r) * .28), #000 calc(var(--r) * .4), transparent calc(var(--r) * .62)),
    radial-gradient(circle at calc(var(--x) + var(--r) * .18) calc(var(--y) + var(--r) * .56), #000 calc(var(--r) * .3), transparent calc(var(--r) * .5)),
    radial-gradient(circle at calc(var(--x) - var(--r) * .3) calc(var(--y) - var(--r) * .56), #000 calc(var(--r) * .28), transparent calc(var(--r) * .48));
  transition: --r 1.5s cubic-bezier(.35, .1, .25, 1); }
/* the wash: the slide's own paint colour thinned with water, strongest behind the painting */
.wb__wash { position: absolute; inset: 0;
  background:
    radial-gradient(ellipse 46% 60% at 74% 46%, color-mix(in srgb, var(--c) 46%, #FBF7EF), transparent 72%),
    radial-gradient(ellipse 30% 40% at 96% 96%, color-mix(in srgb, var(--c) 34%, #FBF7EF), transparent 70%),
    radial-gradient(ellipse 34% 40% at 46% 4%, color-mix(in srgb, var(--c) 20%, #FBF7EF), transparent 70%),
    linear-gradient(100deg, #FBF7EF 0 34%, color-mix(in srgb, var(--c) 14%, #FBF7EF) 70%, color-mix(in srgb, var(--c) 24%, #FBF7EF)); }
/* the painting lies on the wash like a sheet of watercolor paper */
.wb__sheet { position: absolute; right: clamp(20px, 6vw, 110px); top: 9%; bottom: 17%; width: min(46%, 640px); display: grid; grid-template: minmax(0, 1fr) / minmax(0, 1fr); place-items: center; perspective: 1200px; pointer-events: none; }
.wb__sheet img { max-width: 100%; max-height: 100%; width: auto; height: auto; object-fit: contain; border-radius: 6px; background: #fff;
  box-shadow: 0 2px 0 #fff, 0 30px 60px -24px color-mix(in srgb, var(--c) 60%, #000), 0 12px 24px -14px rgba(0,0,0,.35);
  transform: rotate(var(--tilt, 2deg)) rotateX(var(--rx, 0deg)) rotateY(var(--ry, 0deg)); transition: transform .5s cubic-bezier(.2,.7,.2,1); user-select: none; }
.wb__slide:nth-child(even) .wb__sheet img { --tilt: -2deg; }
.wb__hint { position: absolute; right: clamp(20px, 6vw, 110px); bottom: 13%; z-index: 3; background: rgba(255,255,255,.9); color: var(--olive); font: 600 .82rem var(--body); padding: 7px 14px; border-radius: 999px; box-shadow: var(--sh-card); pointer-events: none; transition: opacity .5s; }
.wb__hint::before { content: ''; display: inline-block; width: 10px; height: 10px; margin-right: 8px; border-radius: 58% 42% 55% 45% / 48% 56% 44% 52%; background: var(--orange); }
.wb.is-touched .wb__hint { opacity: 0; }

/* ----- texts ----- */
.wb__content { position: relative; display: grid; align-items: center; pointer-events: none; }
.wb__txt { grid-area: 1 / 1; max-width: min(46%, 560px); opacity: 0; visibility: hidden; transform: translateY(18px); transition: opacity .45s ease, transform .6s cubic-bezier(.2,.7,.2,1), visibility 0s .45s; }
.wb__txt.is-on { opacity: 1; visibility: visible; transform: none; pointer-events: auto; transition: opacity .7s ease .45s, transform .8s cubic-bezier(.2,.7,.2,1) .45s; }
.wb__title { font-size: clamp(2.1rem, 3vw + 1rem, 3.5rem); letter-spacing: -.5px; margin-bottom: .4em; }
.wb__title strong { color: var(--orange); font-style: italic; font-weight: 600; }
.wb__lead { font-size: 1.15rem; color: var(--ink-soft); max-width: 52ch; }

/* ----- paint palette: one blob of paint per slide; the active blob has a ring that fills while it is shown ----- */
.wb__nav { position: relative; display: flex; align-items: center; gap: 14px; padding: 18px 0 26px; }
.wb__palette { display: flex; align-items: center; gap: 12px; padding: 8px 14px; background: rgba(255,255,255,.82); border-radius: 999px; box-shadow: var(--sh-card); }
.wb__dot { --p: 0%; position: relative; width: 30px; height: 30px; padding: 0; border: 0; background: none; cursor: pointer; display: grid; place-items: center; }
.wb__dot span { width: 20px; height: 20px; background: var(--c); border-radius: 58% 42% 55% 45% / 48% 56% 44% 52%; box-shadow: inset -2px -3px 0 rgba(0,0,0,.14), inset 2px 2px 0 rgba(255,255,255,.35); transition: transform .35s cubic-bezier(.2,.8,.3,1.5), border-radius .6s; }
.wb__dot:nth-child(even) span { border-radius: 45% 55% 42% 58% / 56% 44% 52% 48%; }
.wb__dot:hover span { transform: scale(1.25) rotate(12deg); }
.wb__dot.is-on span { transform: scale(1.1); }
.wb__dot.is-on::before { content: ''; position: absolute; inset: -3px; border-radius: 50%; background: conic-gradient(var(--c) var(--p), color-mix(in srgb, var(--c) 22%, transparent) 0);
  -webkit-mask: radial-gradient(farthest-side, transparent calc(100% - 3.5px), #000 calc(100% - 3px)); mask: radial-gradient(farthest-side, transparent calc(100% - 3.5px), #000 calc(100% - 3px)); }
.wb__arrow, .wb__pause { width: 42px; height: 42px; border-radius: 50%; border: 0; background: rgba(255,255,255,.82); color: var(--olive); font: 600 26px/1 var(--display); cursor: pointer; box-shadow: var(--sh-card); display: grid; place-items: center; transition: background .2s, color .2s, transform .2s; }
.wb__arrow:hover, .wb__pause:hover { background: var(--olive); color: #fff; transform: translateY(-2px); }
.wb__pause span { width: 12px; height: 14px; border-left: 4px solid currentColor; border-right: 4px solid currentColor; }
.wb__pause[aria-pressed="true"] span { width: 0; height: 0; border: 8px solid transparent; border-left: 13px solid currentColor; border-right: 0; margin-left: 3px; }

@media (max-width: 860px) {
  .wb { min-height: 0; padding-top: 0; grid-template-rows: auto auto auto; }
  .wb__stage { position: relative; inset: auto; z-index: 0; height: min(92vw, 60vh); }
  .wb__wash { background: radial-gradient(ellipse 80% 70% at 50% 45%, color-mix(in srgb, var(--c) 42%, #FBF7EF), transparent 75%), linear-gradient(180deg, color-mix(in srgb, var(--c) 18%, #FBF7EF), #FBF7EF); }
  .wb__sheet { inset: 6% 8% 14%; width: auto; }
  .wb__hint { left: auto; right: 10px; bottom: 6px; font-size: .7rem; padding: 5px 10px; max-width: calc(100% - 20px); }
  .wb__content { padding-top: 22px; align-items: start; }
  .wb__txt { max-width: none; }
  .wb__nav { justify-content: center; gap: 10px; padding: 16px 0 34px; }
  .wb__palette { gap: 4px; padding: 6px 8px; }
  .wb__arrow, .wb__pause { width: 38px; height: 38px; flex: none; }
  .wb__title { font-size: clamp(1.9rem, 8vw, 2.6rem); overflow-wrap: anywhere; }
}
@media (prefers-reduced-motion: reduce) {
  .wb__slide.is-in { -webkit-mask-image: none; mask-image: none; }
  .wb__sheet img { transform: rotate(var(--tilt, 2deg)); }
}