/* ==========================================================================
   WIZKET — brand-book.css · "The brand book" (Branding page, #book)
   Desktop: js/brand-book.js moves each spread's pages into 11 real 3D leaves (.is-3d).
   Phones: the <article>s stay a swipeable row. Paper + Kova keep their own palette.
   Prefix: bk-
   ========================================================================== */
.bk { position: relative; }
.bk__stage {
  --side: clamp(20px, 6vw, 110px);
  position: relative;
  min-height: 100svh;
  overflow: hidden;
  padding: calc(var(--nav-top) + var(--nav-h) + 16px) var(--side) clamp(20px, 3vh, 34px);
  background:
    radial-gradient(50% 55% at 50% 60%, var(--petrol) 0%, transparent 70%),
    var(--bg);
}
.bk__head { display: flex; flex-wrap: wrap; align-items: flex-end; gap: 6px 28px; }
.bk__head .ws-eyebrow { flex-basis: 100%; margin-bottom: 4px; }
.bk__title { margin: 0; font: 400 clamp(2.4rem, min(5vw, 9vh), 5.4rem)/0.9 var(--font-display); text-transform: uppercase; color: var(--text); }
.bk__count { margin: 0 0 8px auto; font: 400 18px/1 var(--font-display); letter-spacing: 0.08em; color: var(--muted); }
.bk__count b { font-weight: 400; color: var(--accent); }

/* ---- the 3D book (desktop) ---- */
.bk-scene { display: none; }
.bk.is-3d .bk-scene { position: relative; display: grid; place-items: center; height: calc(100svh - var(--nav-top) - var(--nav-h) - 130px); min-height: 440px; perspective: 2600px; }
.bk.is-3d .bk-spreads { display: none; }
.bk-book { --pw: 340px; --ph: 440px; position: relative; width: calc(var(--pw) * 2); height: var(--ph); will-change: transform; }
.bk-book::after { content: ""; position: absolute; left: 6%; right: 6%; bottom: -26px; height: 30px; border-radius: 50%; background: radial-gradient(closest-side, rgba(0, 0, 0, 0.5), transparent); z-index: -1; }
.bk-base { position: absolute; top: 0; width: var(--pw); height: var(--ph); }
.bk-base--l { left: 0; border-radius: 8px 0 0 8px; background: #1f4d3a; box-shadow: inset -12px 0 20px -10px rgba(0, 0, 0, 0.5); }
.bk-endpaper { position: absolute; inset: 10px 0 10px 10px; border-radius: 4px 0 0 4px; background: radial-gradient(circle at 25% 25%, rgba(243, 234, 215, 0.14) 0 6px, transparent 7px) 0 0 / 34px 34px, #234f3c; }
.bk-base--r { left: var(--pw); display: grid; place-items: center; padding: 34px; border-radius: 0 8px 8px 0; background: #faf6ee; box-shadow: inset 12px 0 20px -10px rgba(0, 0, 0, 0.25); color: #15191c; }
.bk-leaf { position: absolute; left: var(--pw); top: 0; width: var(--pw); height: var(--ph); transform-origin: 0 50%; transform-style: preserve-3d; will-change: transform; }
.bk-face { position: absolute; inset: 0; overflow: hidden; -webkit-backface-visibility: hidden; backface-visibility: hidden; }
.bk-face--back { transform: rotateY(180deg); }
.bk-shade { position: absolute; inset: 0; z-index: 5; pointer-events: none; opacity: 0; background: linear-gradient(90deg, rgba(0, 0, 0, 0.35), transparent 55%, rgba(255, 255, 255, 0.15)); }
.bk-face--back .bk-shade { background: linear-gradient(270deg, rgba(0, 0, 0, 0.35), transparent 55%, rgba(255, 255, 255, 0.15)); }

.bk-page { display: grid; padding: clamp(22px, 2.4vw, 32px); background: #faf6ee; color: #15191c; font-family: var(--font-body); }
.bk-page--r { border-radius: 0 8px 8px 0; box-shadow: inset 14px 0 18px -14px rgba(0, 0, 0, 0.3); }
.bk-page--l { border-radius: 8px 0 0 8px; box-shadow: inset -14px 0 18px -14px rgba(0, 0, 0, 0.3); }
.bk-cover { display: grid; justify-items: center; align-content: center; gap: 14px; border-radius: 0 8px 8px 0; background: radial-gradient(90% 70% at 40% 30%, #2f6a4f, #1f4d3a 60%, #173a2c); box-shadow: inset 0 0 0 10px #1f4d3a, inset 0 0 0 11px rgba(243, 234, 215, 0.35), inset 14px 0 20px -12px rgba(0, 0, 0, 0.5); color: #f3ead7; }
.bk-cover__nb .nb { --w: 96px; }
.bk-cover__nb { margin-top: -30px; transition: opacity 0.2s; }
.bk-cover__t { margin: 0; display: grid; justify-items: center; gap: 6px; }
.bk-cover__t b { font: 400 48px/0.9 var(--font-display); letter-spacing: 0.08em; text-transform: uppercase; }
.bk-cover__t span { font: 600 11px/1 var(--font-body); letter-spacing: 0.32em; text-transform: uppercase; opacity: 0.8; }
.bk-cover__by { position: absolute; bottom: 24px; margin: 0; font: 500 10.5px/1 var(--font-body); letter-spacing: 0.2em; text-transform: uppercase; opacity: 0.55; }
.bk-inside { place-content: center; justify-items: center; background: #f1ebde; }
.bk-inside__t { margin: 0; font: 400 40px/1 var(--font-display); letter-spacing: 0.08em; text-transform: uppercase; color: #1f4d3a; }
.bk-inside__s { margin: 8px 0 0; font: 500 11px/1 var(--font-body); color: #8a8270; }
.bk-drop { position: absolute; z-index: 60; left: 50%; top: 50%; visibility: hidden; pointer-events: none; }
.bk-drop .nb { --w: 96px; }

.bk-tabs { position: absolute; right: 0; top: 50%; translate: 0 -50%; display: grid; gap: 6px; }
.bk-tab { padding: 7px 12px 7px 16px; border-radius: 999px 0 0 999px; background: var(--surface); border: 1px solid var(--line2); border-right: 0; font: 700 10.5px/1 var(--font-body); letter-spacing: 0.12em; text-transform: uppercase; text-align: left; color: var(--muted); transition: color 0.3s, background-color 0.3s, transform 0.3s var(--ease-out); }
.bk-tab.is-on { background: var(--accent); border-color: var(--accent); color: var(--on-accent); transform: translateX(-6px); }
@media (hover: hover) and (pointer: fine) { .bk-tab:hover { color: var(--text); } .bk-tab.is-on:hover { color: var(--on-accent); } }
.bk-tab:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }

/* ---- page content ---- */
.bk-l { display: grid; align-content: center; gap: 14px; }
.bk-l h3 { margin: 0; font: 400 clamp(2rem, 3vw, 2.8rem)/0.92 var(--font-display); text-transform: uppercase; color: #1f4d3a; }
.bk-l p { margin: 0; font: 500 15px/1.5 var(--font-body); color: #3d4448; }
.bk-l .bk-l__n { font: 700 11px/1 var(--font-body); letter-spacing: 0.22em; text-transform: uppercase; color: #fd5f07; }
.bk-l .bk-l__t { justify-self: start; padding: 7px 10px; border-radius: 6px; background: #efe6d2; font: 600 12px/1.3 var(--font-body); color: #5b5446; }
.bk-l__t a { color: #c2410c; text-decoration: underline; text-underline-offset: 2px; }
.bk-backmsg { display: grid; gap: 12px; text-align: center; }
.bk-backmsg h3 { margin: 0; font: 400 40px/0.92 var(--font-display); text-transform: uppercase; color: #1f4d3a; }
.bk-backmsg p { margin: 0; font: 600 16px/1.4 var(--font-body); color: #3d4448; }
.bk-backmsg .bk-l__n { font: 700 11px/1 var(--font-body); letter-spacing: 0.22em; text-transform: uppercase; color: #fd5f07; }
.bk-backmsg__b { padding-top: 12px; border-top: 1px dashed #d8cfbb; font-weight: 500 !important; color: #6b6250 !important; }

.bk-r { position: relative; display: grid; place-items: center; min-height: 0; }
.bk-r--map::before, .bk-r--map::after { content: ""; position: absolute; background: #d8cfbb; }
.bk-r--map::before { left: 8%; right: 8%; top: 50%; height: 2px; }
.bk-r--map::after { top: 8%; bottom: 8%; left: 50%; width: 2px; }
.bk-axis { position: absolute; top: 2%; left: 50%; translate: -50% 0; font: 700 10px/1 var(--font-body); letter-spacing: 0.16em; text-transform: uppercase; color: #8a8270; }
.bk-axis--b { top: auto; bottom: 2%; }
.bk-axis--l { top: 50%; left: 0; translate: 0 -150%; }
.bk-axis--r { top: 50%; left: auto; right: 0; translate: 0 -150%; }
.bk-r--map i { position: absolute; width: 14px; height: 14px; border-radius: 50%; background: #b9b09c; }
.bk-r--map i:nth-of-type(1) { left: 22%; top: 30%; } .bk-r--map i:nth-of-type(2) { left: 34%; top: 62%; } .bk-r--map i:nth-of-type(3) { left: 28%; top: 72%; }
.bk-r--map i:nth-of-type(4) { left: 40%; top: 40%; } .bk-r--map i:nth-of-type(5) { left: 18%; top: 56%; }
.bk-r--map b { position: absolute; right: 18%; top: 20%; display: grid; place-items: center; width: 54px; height: 54px; border-radius: 50%; background: #fd5f07; box-shadow: 0 0 0 8px rgba(253, 95, 7, 0.18); font: 400 15px/1 var(--font-display); letter-spacing: 0.06em; text-transform: uppercase; color: #fff; }
.bk-r--map.is-on b { animation: bk-ping 1.4s var(--ease-out) 0.3s both; }
@keyframes bk-ping { 0% { transform: scale(0); } 60% { transform: scale(1.15); } 100% { transform: none; } }

.bk-r--name { align-content: center; gap: 10px; }
.bk-r--name s { font: 400 28px/1 var(--font-display); text-transform: uppercase; color: #b9b09c; text-decoration: line-through 3px #fd5f07; }
.bk-r--name b { padding: 6px 22px; border: 3px solid #fd5f07; border-radius: 50%; font: 400 44px/1 var(--font-display); letter-spacing: 0.06em; text-transform: uppercase; color: #1f4d3a; rotate: -3deg; }
.bk-r--name p { margin: 8px 0 0; max-width: 26ch; text-align: center; font: italic 500 15px/1.45 Georgia, serif; color: #3d4448; }

.bk-r--logo { align-content: center; gap: 18px; }
.bk-grid { position: absolute; inset: 10%; background: linear-gradient(#e7dfcd 1px, transparent 1px) 0 0 / 24px 24px, linear-gradient(90deg, #e7dfcd 1px, transparent 1px) 0 0 / 24px 24px; border: 1px solid #e7dfcd; }
.bk-logo-big { --w: 130px !important; }
.bk-sizes { position: relative; display: flex; align-items: flex-end; gap: 14px; }
.bk-sizes i { display: block; border-radius: 48% 48% 44% 44% / 56% 56% 44% 44%; background: #1f4d3a; }
.bk-sizes i:nth-child(1) { width: 36px; height: 40px; } .bk-sizes i:nth-child(2) { width: 24px; height: 27px; } .bk-sizes i:nth-child(3) { width: 14px; height: 16px; }
.bk-r--logo > b { position: relative; font: 400 34px/1 var(--font-display); letter-spacing: 0.12em; text-transform: uppercase; color: #1f4d3a; }

.bk-r--colour { grid-template-columns: repeat(4, 1fr); justify-items: stretch; align-content: center; gap: 10px; }
.bk-sw { position: relative; height: 170px; border-radius: 10px 10px 4px 4px; background: var(--c); box-shadow: inset 0 0 0 1px rgba(0, 0, 0, 0.08); }
.bk-sw::after { content: ""; position: absolute; left: 30%; top: 100%; width: 16px; height: 0; border-radius: 0 0 10px 10px; background: var(--c); transition: height 1s cubic-bezier(0.3, 0.9, 0.3, 1) 0.3s; }
.bk-r--colour.is-on .bk-sw::after { height: 34px; }
.bk-sw:nth-child(2)::after { left: 55%; transition-delay: 0.45s; } .bk-sw:nth-child(3)::after { left: 20%; transition-delay: 0.6s; } .bk-sw:nth-child(4)::after { left: 45%; transition-delay: 0.75s; }
.bk-sw em { position: absolute; left: 8px; bottom: 8px; font: 700 10px/1 var(--font-body); font-style: normal; letter-spacing: 0.1em; text-transform: uppercase; color: rgba(255, 255, 255, 0.85); mix-blend-mode: difference; }
.bk-type { grid-column: 1 / -1; margin: 46px 0 0; display: flex; align-items: center; gap: 14px; }
.bk-type b { font: 400 64px/1 var(--font-display); color: #1f4d3a; }
.bk-type span { font: 600 13px/1.3 var(--font-body); color: #5b5446; }

.bk-r--voice { align-content: center; gap: 12px; }
.bk-say { width: 100%; margin: 0; display: grid; gap: 6px; padding: 14px 16px; border-radius: 12px; background: #eaf2ec; font: 700 17px/1.2 var(--font-body); color: #1f4d3a; }
.bk-say em { font: 700 10px/1 var(--font-body); font-style: normal; letter-spacing: 0.18em; text-transform: uppercase; color: #5b8a6f; }
.bk-say.is-no { background: #fbe9e5; color: #a33a22; text-decoration: line-through 2px; }
.bk-say.is-no em { color: #c46b56; text-decoration: none; }

.bk-r--pack { perspective: 800px; }
.bk-pouch { position: relative; display: grid; place-items: center; align-content: center; gap: 8px; width: 150px; height: 200px; border-radius: 10px 10px 16px 16px; background: linear-gradient(#2a6047, #1f4d3a); box-shadow: 0 30px 40px -20px rgba(0, 0, 0, 0.6); color: #f3ead7; transform-origin: 50% 100%; transform: rotateX(80deg); transition: transform 0.9s cubic-bezier(0.3, 1.4, 0.5, 1) 0.2s; }
.bk-pouch::before { content: ""; position: absolute; top: 12px; left: 14px; right: 14px; height: 6px; border-radius: 3px; background: rgba(255, 255, 255, 0.18); }
.bk-pouch b { font: 400 36px/1 var(--font-display); letter-spacing: 0.08em; text-transform: uppercase; }
.bk-pouch em { padding: 5px 8px; border-radius: 4px; background: #f3ead7; font: 700 10px/1 var(--font-body); font-style: normal; color: #1f4d3a; }
.bk-r--pack.is-on .bk-pouch { transform: none; }
.bk-bcard { position: absolute; right: 8%; bottom: 10%; display: grid; gap: 6px; padding: 14px 16px; border-radius: 6px; background: #f3ead7; box-shadow: 0 16px 26px -14px rgba(0, 0, 0, 0.5); rotate: 8deg; color: #1f4d3a; }
.bk-bcard b { font: 400 20px/1 var(--font-display); letter-spacing: 0.08em; text-transform: uppercase; }
.bk-bcard em { font: 600 10px/1 var(--font-body); font-style: normal; color: #5b5446; }

.bk-laptop { position: relative; width: 92%; aspect-ratio: 16 / 11; padding: 10px 10px 18px; border-radius: 12px 12px 4px 4px; background: #15191c; box-shadow: 0 30px 40px -24px rgba(0, 0, 0, 0.6); }
.bk-laptop::after { content: ""; position: absolute; left: -8%; right: -8%; bottom: -10px; height: 12px; border-radius: 0 0 10px 10px; background: #2a3137; }
.bk-laptop__scr { display: block; height: 100%; overflow: hidden; border-radius: 4px; background: #f3ead7; }
.bk-mini { display: grid; gap: 8px; padding: 10px; color: #1f4d3a; }
.bk-r--web.is-on .bk-mini { animation: bk-scroll 6s ease-in-out 0.5s infinite alternate; }
@keyframes bk-scroll { to { transform: translateY(-40%); } }
.bk-mini b { font: 400 16px/1 var(--font-display); letter-spacing: 0.08em; text-transform: uppercase; }
.bk-mini__hero { display: block; height: 90px; padding: 12px; border-radius: 6px; background: #1f4d3a; font: 400 22px/0.95 var(--font-display); font-style: normal; text-transform: uppercase; color: #f3ead7; }
.bk-mini__row { display: block; height: 60px; border-radius: 6px; background: linear-gradient(90deg, #e6dcc6 0 31%, transparent 31% 34.5%, #e6dcc6 34.5% 65.5%, transparent 65.5% 69%, #e6dcc6 69%); }

.bk-ig { display: grid; gap: 10px; width: min(70%, 250px); padding: 14px; border-radius: 18px; background: #fff; box-shadow: 0 24px 40px -20px rgba(0, 0, 0, 0.5); transform-origin: 50% 100%; transform: rotateX(70deg); transition: transform 0.9s cubic-bezier(0.3, 1.4, 0.5, 1) 0.2s; }
.bk-r--social { perspective: 800px; }
.bk-r--social.is-on .bk-ig { transform: none; }
.bk-ig__head { display: grid; grid-template-columns: auto 1fr; gap: 2px 10px; align-items: center; }
.bk-ig__head i { grid-row: span 2; width: 46px; height: 46px; border-radius: 50%; background: radial-gradient(circle at 35% 30%, #4f9a72, #1f4d3a); box-shadow: 0 0 0 2px #fff, 0 0 0 4px #fd5f07; }
.bk-ig__head b { font: 700 14px/1 var(--font-body); }
.bk-ig__head em { font: 500 11px/1.2 var(--font-body); font-style: normal; color: #66727a; }
.bk-ig__hl { display: flex; gap: 10px; }
.bk-ig__hl i { width: 30px; height: 30px; border-radius: 50%; background: #f3ead7; box-shadow: 0 0 0 1.5px #d8cfbb; }
.bk-ig__grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 3px; }
.bk-ig__grid i { aspect-ratio: 1; background: #1f4d3a; }
.bk-ig__grid i:nth-child(3n + 2) { background: #f3ead7; } .bk-ig__grid i:nth-child(4), .bk-ig__grid i:nth-child(8) { background: #fd5f07; }

.bk-clip { position: relative; display: grid; gap: 8px; width: 70%; padding: 16px; background: #efe8da; box-shadow: 0 16px 30px -16px rgba(0, 0, 0, 0.5); rotate: -5deg; translate: -12% -20%; }
.bk-clip b { padding-bottom: 6px; border-bottom: 2px solid #15191c; text-align: center; font: 700 16px/1 Georgia, serif; }
.bk-clip em { font: 700 18px/1.1 Georgia, serif; font-style: normal; }
.bk-clip i { display: block; height: 5px; background: #c9c1b0; }
.bk-release { position: absolute; right: 6%; bottom: 8%; display: grid; gap: 7px; width: 56%; padding: 16px; background: #fff; box-shadow: 0 16px 30px -16px rgba(0, 0, 0, 0.5); rotate: 4deg; }
.bk-release b { font: 700 13px/1 var(--font-body); letter-spacing: 0.1em; text-transform: uppercase; }
.bk-release i { display: block; height: 5px; background: #e3e7ea; }
.bk-release em { justify-self: start; margin-top: 4px; padding: 5px 8px; border: 2px solid #fd5f07; border-radius: 4px; font: 800 9.5px/1 var(--font-body); font-style: normal; letter-spacing: 0.12em; text-transform: uppercase; color: #fd5f07; rotate: -4deg; }
.bk-r--pr.is-on .bk-release em { animation: bk-stamp 0.5s cubic-bezier(0.3, 1.6, 0.5, 1) 0.6s both; }
@keyframes bk-stamp { from { transform: scale(2.4); opacity: 0; } }

.bk-r--rules { grid-template-columns: 1fr 1fr; gap: 12px; align-content: center; }
.bk-rule { position: relative; display: grid; place-items: center; height: 120px; border-radius: 10px; background: #f1ebde; }
.bk-rule b { font: 400 28px/1 var(--font-display); letter-spacing: 0.1em; text-transform: uppercase; color: #1f4d3a; }
.bk-rule em { position: absolute; left: 8px; bottom: 8px; font: 700 10px/1 var(--font-body); font-style: normal; color: #2a7a4a; }
.bk-rule.is-no em { color: #c0392b; }
.bk-rule.is-squash b { transform: scaleX(1.6) scaleY(0.7); }
.bk-rule.is-tint b { color: #e84393; }
.bk-rule.is-busy { background: repeating-linear-gradient(45deg, #f1ebde 0 8px, #e2d8c2 8px 16px); }
.bk-rule.is-busy b { text-shadow: 6px 4px 0 #fd5f07, -6px -4px 0 #7bb3ff; }

/* ---- phones: a swipeable row of spreads ---- */
.bk-spreads { display: flex; gap: 14px; margin-top: 26px; padding-bottom: 12px; overflow-x: auto; scroll-snap-type: x mandatory; -webkit-overflow-scrolling: touch; scrollbar-width: none; }
.bk-spreads::-webkit-scrollbar { display: none; }
.bk-spread { flex: 0 0 min(86vw, 380px); scroll-snap-align: center; display: grid; gap: 18px; padding: 22px; border-radius: 16px; background: #faf6ee; color: #15191c; box-shadow: 0 30px 50px -30px rgba(0, 0, 0, 0.6); }
.bk-spread .bk-r { min-height: 280px; }
.bk-spread .bk-sw { height: 120px; }
@media (max-width: 899px) {
  .bk__stage { min-height: 0; padding: clamp(90px, 13vh, 130px) var(--side) clamp(60px, 9vh, 90px); }
  .bk__count { margin-left: 0; }
}