/* ============ BRAIN BOOST BOOKS — brand system ============
   Palette extracted from branding PDF + logo (source of truth):
   maroon #8E2125 · teal #008070 · off-white #F6F5F2 · brain rainbow accents
=============================================================== */
:root{
  --bg:#F7F5F1;
  --surface:#FFFFFF;
  --cream:#FBF8F2;
  --maroon:#8E2125;
  --maroon-dark:#701A1E;
  --maroon-soft:#F3E4E4;
  --teal:#008070;
  --teal-dark:#00655A;
  --teal-soft:#E0F0ED;
  --gold:#F0A125;
  --orange:#E06020;
  --blue:#2E86AB;
  --ink:#2B2220;
  --muted:#7C7069;
  --line:#E9E2DA;
  --radius:18px;
  --shadow:0 10px 30px rgba(43,34,32,.10);
  --shadow-sm:0 4px 14px rgba(43,34,32,.08);
  --font-en:'Bree Serif','Noto Sans Sinhala',serif;
  --font-body:'Nunito','Noto Sans Sinhala',sans-serif;
  --font-si:'Noto Sans Sinhala','Nunito',sans-serif;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:auto}
html.lenis,html.lenis body{height:auto}
.lenis.lenis-smooth{scroll-behavior:auto!important}
body{
  background:var(--bg);
  color:var(--ink);
  font-family:var(--font-body);
  font-size:16.5px;
  line-height:1.65;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button{font-family:inherit;cursor:pointer;border:none;background:none}
.si{font-family:var(--font-si)}
h1,h2,h3,h4{font-family:var(--font-en);font-weight:400;line-height:1.22}
.wrap{max-width:1180px;margin:0 auto;padding:0 clamp(18px,4vw,40px)}

/* ---------- header ---------- */
.hdr{
  position:fixed;inset:0 0 auto 0;z-index:60;
  transition:box-shadow .35s;
}
/* blur lives on a pseudo so it never becomes a containing block for the fixed nav overlay */
.hdr::before{content:"";position:absolute;inset:0;background:rgba(247,245,241,.92);backdrop-filter:blur(14px);opacity:0;transition:opacity .35s;pointer-events:none}
.hdr.solid{box-shadow:0 1px 0 var(--line)}
.hdr.solid::before{opacity:1}
.hdr-in{position:relative}
.hdr-in{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:12px clamp(18px,4vw,40px);max-width:1320px;margin:0 auto}
.hdr-logo img{height:46px;width:auto}
.hdr-nav{display:flex;gap:clamp(14px,2.5vw,30px);align-items:center;font-weight:700;font-size:15px}
.hdr-nav a{color:var(--ink);opacity:.85;transition:.2s}
.hdr-nav a:hover{color:var(--maroon);opacity:1}
.cart-link{position:relative;display:inline-flex;align-items:center;gap:7px;background:var(--maroon);color:#fff!important;padding:9px 18px;border-radius:999px;box-shadow:var(--shadow-sm)}
.cart-link:hover{background:var(--maroon-dark);color:#fff}
.cart-count{position:absolute;top:-7px;right:-7px;min-width:21px;height:21px;border-radius:999px;background:var(--teal);color:#fff;font-size:12px;font-weight:800;display:flex;align-items:center;justify-content:center;padding:0 5px;border:2px solid var(--bg);transform:scale(0);transition:transform .25s cubic-bezier(.34,1.56,.64,1)}
.cart-count.on{transform:scale(1)}
.burger{display:none;flex-direction:column;gap:5px;padding:8px;position:relative;z-index:70}
.burger span{width:24px;height:2.6px;background:var(--ink);border-radius:2px;transition:.25s}

/* ---------- buttons ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:9px;font-weight:800;border-radius:999px;padding:14px 30px;font-size:16px;transition:.22s;text-align:center}
.btn-maroon{background:var(--maroon);color:#fff;box-shadow:var(--shadow-sm)}
.btn-maroon:hover{background:var(--maroon-dark);transform:translateY(-2px)}
.btn-teal{background:var(--teal);color:#fff;box-shadow:var(--shadow-sm)}
.btn-teal:hover{background:var(--teal-dark);transform:translateY(-2px)}
.btn-ghost{border:2px solid var(--line);color:var(--ink);background:var(--surface)}
.btn-ghost:hover{border-color:var(--maroon);color:var(--maroon)}
.btn-wa{background:#1FAF5E;color:#fff;font-size:17.5px;padding:16px 30px;box-shadow:0 8px 24px rgba(31,175,94,.35)}
.btn-wa:hover{background:#189A51;transform:translateY(-2px)}
.btn[disabled]{opacity:.5;pointer-events:none}

/* ---------- cinematic scrub sections ---------- */
.scrub-sec{position:relative}
.scrub-pin{position:sticky;top:0;height:100vh;height:100svh;overflow:hidden;display:flex;align-items:center;justify-content:center}
.scrub-canvas{position:absolute;inset:0;width:100%;height:100%}
.scrub-poster{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}

/* hero */
.hero-sec{height:340vh}
.hero-overlay{position:relative;z-index:5;text-align:center;padding:clamp(26px,5vw,54px) clamp(22px,5vw,64px);max-width:900px;border-radius:32px;background:radial-gradient(closest-side,rgba(247,245,241,.94),rgba(247,245,241,.82) 55%,rgba(247,245,241,0));will-change:opacity,transform}
.hero-logo{height:clamp(80px,13vw,140px);width:auto;margin:0 auto 18px;filter:drop-shadow(0 6px 18px rgba(43,34,32,.18))}
.hero-title{font-size:clamp(2.4rem,6.5vw,4.6rem);color:var(--maroon);letter-spacing:.01em}
.hero-tag{font-family:var(--font-si);font-size:clamp(1.15rem,3vw,1.7rem);color:var(--teal);font-weight:600;margin-top:14px;letter-spacing:.4em;white-space:nowrap}
.hero-sub{margin-top:16px;color:var(--muted);font-weight:600;font-size:clamp(.95rem,2vw,1.1rem)}
.hero-cta{margin-top:30px;display:flex;gap:14px;justify-content:center;flex-wrap:wrap}
.hero-scroll-hint{position:absolute;bottom:26px;left:50%;transform:translateX(-50%);z-index:6;color:var(--muted);font-size:13px;font-weight:700;letter-spacing:.18em;text-transform:uppercase;display:flex;flex-direction:column;align-items:center;gap:8px}
.hero-scroll-hint::after{content:"";width:1.5px;height:34px;background:linear-gradient(var(--maroon),transparent);animation:drip 1.8s infinite}
@keyframes drip{0%{transform:scaleY(0);transform-origin:top}45%{transform:scaleY(1);transform-origin:top}55%{transform:scaleY(1);transform-origin:bottom}100%{transform:scaleY(0);transform-origin:bottom}}

/* generic reveal */
.rv{opacity:0;transform:translateY(34px);transition:opacity .9s cubic-bezier(.2,.6,.2,1),transform .9s cubic-bezier(.2,.6,.2,1)}
.rv.in{opacity:1;transform:none}
.rv-d1{transition-delay:.12s}.rv-d2{transition-delay:.24s}.rv-d3{transition-delay:.36s}

/* story section */
.story-sec{padding:clamp(90px,14vh,150px) 0;text-align:center;background:linear-gradient(var(--bg),var(--cream) 55%,var(--bg))}
.story-si{font-family:var(--font-si);font-size:clamp(1.9rem,5vw,3.2rem);color:var(--maroon);font-weight:700}
.story-en{font-size:clamp(1.15rem,2.6vw,1.6rem);color:var(--teal);margin-top:12px;font-family:var(--font-en)}
.story-p{max-width:640px;margin:26px auto 0;color:var(--muted);font-weight:600}
.story-video{margin:56px auto 0;max-width:980px;border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);position:relative;aspect-ratio:16/9;background:var(--cream)}
.story-video video,.story-video img{width:100%;height:100%;object-fit:cover}

/* pages scrub */
.pages-sec{height:520vh;background:#171310}
.pages-caption{position:absolute;z-index:6;left:0;right:0;bottom:clamp(26px,6vh,60px);text-align:center;color:#fff;padding:0 20px;pointer-events:none}
.pages-caption .c-si{font-family:var(--font-si);font-size:clamp(1.25rem,3.4vw,2rem);font-weight:700;text-shadow:0 2px 18px rgba(0,0,0,.55)}
.pages-caption .c-en{font-size:.95rem;opacity:.85;margin-top:6px;font-weight:700;letter-spacing:.08em;text-transform:uppercase}
.pages-progress{position:absolute;z-index:6;top:0;left:0;height:3px;background:var(--gold);width:0%}

/* exploded section */
.expl-sec{padding:clamp(90px,14vh,150px) 0;background:var(--bg)}
.expl-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:clamp(30px,5vw,70px);align-items:center}
.expl-media{border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);aspect-ratio:16/9;background:var(--cream);position:relative}
.expl-media video,.expl-media img{width:100%;height:100%;object-fit:cover}
.expl-h{font-size:clamp(1.7rem,3.6vw,2.6rem);color:var(--maroon)}
.callouts{margin-top:30px;display:flex;flex-direction:column;gap:16px}
.callout{display:flex;gap:15px;align-items:flex-start;background:var(--surface);border:1px solid var(--line);border-radius:14px;padding:15px 18px;box-shadow:var(--shadow-sm)}
.callout .ico{flex:0 0 auto;width:42px;height:42px;border-radius:12px;display:flex;align-items:center;justify-content:center;font-size:20px}
.callout b{display:block;font-size:15.5px}
.callout span{color:var(--muted);font-size:13.5px;font-weight:600}

/* ---------- store ---------- */
.page-head{padding:130px 0 30px;text-align:center}
.page-head h1{font-size:clamp(2rem,4.5vw,3rem);color:var(--maroon)}
.page-head .si{color:var(--teal);font-weight:700;margin-top:8px;font-size:1.15rem}
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(250px,1fr));gap:clamp(16px,2.4vw,28px);padding:26px 0 90px}
.card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow-sm);transition:transform .3s cubic-bezier(.2,.6,.2,1),box-shadow .3s;display:flex;flex-direction:column}
.card:hover{transform:translateY(-6px);box-shadow:var(--shadow)}
.card-img{aspect-ratio:1/1;overflow:hidden;background:var(--cream);position:relative}
.card-img img{width:100%;height:100%;object-fit:cover;transition:transform .5s cubic-bezier(.2,.6,.2,1)}
.card:hover .card-img img{transform:scale(1.15)}
.card-lang{position:absolute;top:12px;left:12px;background:rgba(255,255,255,.94);color:var(--teal-dark);font-size:11.5px;font-weight:800;letter-spacing:.08em;padding:5px 12px;border-radius:999px;text-transform:uppercase;z-index:2}
.card-count{position:absolute;bottom:12px;right:12px;background:var(--gold);color:#2B2220;font-size:11px;font-weight:900;padding:4px 11px;border-radius:999px;z-index:2;font-family:var(--font-si)}
.card-video{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.card-body{padding:18px 18px 20px;display:flex;flex-direction:column;gap:6px;flex:1}
.card-title-si{font-family:var(--font-si);font-weight:700;font-size:1.12rem;color:var(--ink)}
.card-title-en{color:var(--muted);font-weight:700;font-size:.9rem}
.card-meta{color:var(--muted);font-size:.82rem;font-weight:700}
.card-foot{margin-top:auto;padding-top:14px;display:flex;align-items:center;justify-content:space-between;gap:10px}
.price{font-family:var(--font-en);color:var(--maroon);font-size:1.25rem}
.price small{color:var(--muted);font-family:var(--font-body);font-weight:700;font-size:.72rem;display:block}
.add-btn{background:var(--teal);color:#fff;font-weight:800;border-radius:999px;padding:10px 18px;font-size:14px;transition:.2s}
.add-btn:hover{background:var(--teal-dark);transform:translateY(-2px)}
.add-btn.added{background:var(--gold)}

/* product detail */
.pd{display:grid;grid-template-columns:1.05fr .95fr;gap:clamp(26px,4.5vw,60px);padding:26px 0 90px;align-items:start}
.pd-gallery{position:sticky;top:96px}
.pd-main{border-radius:var(--radius);overflow:hidden;background:var(--cream);box-shadow:var(--shadow);aspect-ratio:1/1}
.pd-main img{width:100%;height:100%;object-fit:contain;background:#fff}
.pd-thumbs{display:grid;grid-template-columns:repeat(auto-fill,minmax(64px,1fr));gap:10px;margin-top:12px;max-height:240px;overflow-y:auto;padding:2px}
.pd-thumbs button{border-radius:10px;overflow:hidden;border:2px solid transparent;transition:.2s;background:#fff}
.pd-thumbs button.on{border-color:var(--maroon)}
.pd-thumbs img{aspect-ratio:1/1;object-fit:cover}
.pd-info h1{font-family:var(--font-si);font-weight:700;font-size:clamp(1.6rem,3.4vw,2.3rem);color:var(--ink)}
.pd-en{color:var(--teal);font-weight:800;margin-top:4px}
.pd-desc{color:var(--muted);font-weight:600;margin-top:18px}
.pd-price{font-family:var(--font-en);font-size:2rem;color:var(--maroon);margin-top:20px}
.pd-price small{font-size:.95rem;color:var(--muted);font-family:var(--font-body);font-weight:700}
.variant-row{display:flex;gap:10px;margin-top:20px;flex-wrap:wrap}
.variant{border:2px solid var(--line);background:var(--surface);border-radius:14px;padding:12px 18px;font-weight:800;transition:.2s;font-size:14.5px}
.variant.on{border-color:var(--maroon);background:var(--maroon-soft);color:var(--maroon)}
.book-picker{margin-top:14px;display:none}
.book-picker.show{display:block}
.book-picker select{width:100%;padding:13px 16px;border-radius:12px;border:2px solid var(--line);font-family:var(--font-si);font-size:15.5px;font-weight:700;background:var(--surface);color:var(--ink)}
.qty-row{display:flex;align-items:center;gap:18px;margin-top:22px}
.qty{display:flex;align-items:center;border:2px solid var(--line);border-radius:999px;overflow:hidden;background:var(--surface)}
.qty button{width:46px;height:46px;font-size:20px;font-weight:800;color:var(--maroon)}
.qty input{width:52px;text-align:center;border:none;font-size:17px;font-weight:800;font-family:inherit;background:transparent}
.pd-badges{display:flex;gap:9px;flex-wrap:wrap;margin-top:26px}
.badge{background:var(--teal-soft);color:var(--teal-dark);font-size:12.5px;font-weight:800;padding:7px 14px;border-radius:999px}

/* per-book cards inside a series */
.series-books{margin-top:38px;border-top:2px solid var(--line);padding-top:26px}
.sb-h{color:var(--maroon);font-family:var(--font-si);font-weight:700;font-size:1.25rem;margin-bottom:16px}
.sb-h small{color:var(--muted);font-family:var(--font-body);font-weight:700;font-size:.8rem}
.sb-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(150px,1fr));gap:12px}
.sb-card{background:var(--surface);border:1px solid var(--line);border-radius:14px;overflow:hidden;box-shadow:var(--shadow-sm);display:flex;flex-direction:column;transition:transform .25s,box-shadow .25s}
.sb-card:hover{transform:translateY(-4px);box-shadow:var(--shadow)}
.sb-img{display:block;width:100%;aspect-ratio:1/1;overflow:hidden;background:var(--cream);padding:0}
.sb-img img{width:100%;height:100%;object-fit:cover;transition:transform .4s}
.sb-card:hover .sb-img img{transform:scale(1.16)}
.sb-body{padding:10px 12px 12px;display:flex;flex-direction:column;gap:8px;flex:1}
.sb-title{font-weight:700;font-size:.92rem;line-height:1.35;min-height:2.5em}
.sb-foot{margin-top:auto;display:flex;align-items:center;justify-content:space-between;gap:8px}
.sb-price{font-family:var(--font-en);color:var(--maroon);font-size:.98rem}
.sb-add{padding:7px 13px;font-size:12.5px}

/* ---------- cart ---------- */
.cart-list{display:flex;flex-direction:column;gap:14px;padding:10px 0}
.cart-item{display:grid;grid-template-columns:84px 1fr auto;gap:16px;background:var(--surface);border:1px solid var(--line);border-radius:16px;padding:14px;align-items:center;box-shadow:var(--shadow-sm)}
.cart-item img{width:84px;height:84px;object-fit:cover;border-radius:12px;background:var(--cream)}
.ci-name{font-family:var(--font-si);font-weight:700;font-size:1.02rem}
.ci-var{color:var(--muted);font-size:.82rem;font-weight:700}
.ci-line{font-family:var(--font-en);color:var(--maroon);font-size:1.05rem;margin-top:4px}
.ci-right{display:flex;flex-direction:column;align-items:flex-end;gap:8px}
.ci-remove{color:var(--muted);font-size:12.5px;font-weight:800;text-decoration:underline;transition:.2s}
.ci-remove:hover{color:var(--maroon)}
.cart-item .qty button{width:38px;height:38px}
.summary{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:26px;box-shadow:var(--shadow-sm);position:sticky;top:96px}
.summary h3{color:var(--maroon);font-size:1.35rem;margin-bottom:16px}
.sum-row{display:flex;justify-content:space-between;font-weight:700;padding:7px 0;color:var(--muted)}
.sum-row.total{border-top:2px solid var(--line);margin-top:10px;padding-top:15px;color:var(--ink);font-size:1.25rem;font-family:var(--font-en)}
.sum-row.total b{color:var(--maroon)}
.gift-banner{display:flex;gap:12px;align-items:center;background:linear-gradient(100deg,var(--teal-soft),#FCF3DF);border-radius:14px;padding:14px 16px;margin:18px 0;font-size:13.5px;font-weight:700;color:var(--teal-dark)}
.gift-banner .g-ico{font-size:22px}
.cart-grid{display:grid;grid-template-columns:1.4fr .8fr;gap:clamp(20px,3.5vw,44px);padding:10px 0 90px;align-items:start}
.cart-empty{text-align:center;padding:60px 0 100px;color:var(--muted)}
.cart-empty .big{font-size:52px;margin-bottom:14px}
.checkout-form{display:flex;flex-direction:column;gap:13px;margin-top:18px}
.checkout-form label{font-size:13px;font-weight:800;color:var(--muted)}
.checkout-form input,.checkout-form textarea{width:100%;padding:13px 15px;border-radius:12px;border:2px solid var(--line);font-family:var(--font-body);font-size:15.5px;font-weight:600;background:var(--bg);resize:vertical}
.checkout-form input:focus,.checkout-form textarea:focus{outline:none;border-color:var(--teal)}
.cod-note{display:flex;align-items:center;gap:10px;justify-content:center;color:var(--muted);font-size:13px;font-weight:700;margin-top:12px}

/* shop preview strip on landing */
.shop-sec{padding:clamp(80px,12vh,140px) 0 110px;background:linear-gradient(var(--bg),var(--cream))}
.sec-h{text-align:center;margin-bottom:14px}
.sec-h .si-h{font-family:var(--font-si);font-weight:700;color:var(--maroon);font-size:clamp(1.7rem,4vw,2.7rem)}
.sec-h .en-h{color:var(--teal);font-weight:800;margin-top:6px;letter-spacing:.14em;text-transform:uppercase;font-size:.85rem}

/* footer */
.ftr{background:#241B18;color:#CBBFB8;padding:60px 0 40px;margin-top:0}
.ftr-in{display:flex;justify-content:space-between;gap:34px;flex-wrap:wrap}
.ftr img{height:52px;filter:brightness(1.06)}
.ftr h4{color:#fff;margin-bottom:12px;font-size:1.05rem}
.ftr a{display:block;padding:4px 0;font-weight:600;font-size:14.5px;transition:.2s}
.ftr a:hover{color:var(--gold)}
.ftr-bottom{border-top:1px solid rgba(255,255,255,.12);margin-top:40px;padding-top:22px;font-size:13px;display:flex;justify-content:space-between;flex-wrap:wrap;gap:10px}

/* in English mode the translated Sinhala heading equals the English sub-heading — hide the duplicate */
html[data-lang=en] .auth-sec .en-h,html[data-lang=en] .ben-sec .en-h{display:none}

/* ---- floating language switcher (translucent, popup on tap) ---- */
.lang-fab{position:fixed;top:76px;right:10px;z-index:80;display:flex;flex-direction:column;align-items:flex-end;gap:8px}
.lang-fab>button{width:42px;height:42px;border-radius:999px;background:var(--surface);border:1px solid var(--line);box-shadow:var(--shadow-sm);font-size:19px;cursor:pointer;opacity:.45;transition:opacity .25s,transform .2s}
.lang-fab>button:hover,.lang-fab.open>button{opacity:1;transform:scale(1.06)}
.lang-pop{display:none;flex-direction:column;gap:6px;background:var(--surface);border:1px solid var(--line);border-radius:16px;padding:8px;box-shadow:var(--shadow)}
.lang-fab.open .lang-pop{display:flex;animation:bcPop2 .25s cubic-bezier(.34,1.56,.64,1)}
@keyframes bcPop2{0%{transform:scale(.6);opacity:0}100%{transform:scale(1);opacity:1}}
.lang-pop button{font-family:var(--font-si);font-size:13.5px;font-weight:800;padding:9px 18px;border-radius:12px;border:none;cursor:pointer;background:var(--bg);color:var(--ink)}
.lang-pop button.on{background:var(--maroon);color:#fff}

/* ---- quick-nav icon rail (collapsible, swipe/arrow to open) ---- */
.qn-rail{position:fixed;top:126px;right:0;z-index:79;display:flex;align-items:flex-start;transform:translateX(calc(100% - 26px));transition:transform .35s cubic-bezier(.2,.6,.2,1)}
.qn-rail.open{transform:none}
.qn-arrow{width:26px;height:66px;border-radius:14px 0 0 14px;background:var(--maroon);color:#fff;border:none;font-size:15px;font-weight:900;cursor:pointer;opacity:.55;transition:opacity .25s;box-shadow:var(--shadow-sm)}
.qn-rail.open .qn-arrow{opacity:1}
.qn-items{display:flex;flex-direction:column;gap:8px;padding:0 10px 0 8px;background:rgba(247,245,241,.92);backdrop-filter:blur(8px);border-radius:16px 0 0 16px;padding-top:8px;padding-bottom:8px}
.qn-item{position:relative;display:flex;align-items:center;justify-content:center;width:42px;height:42px;border-radius:999px;background:var(--surface);border:1px solid var(--line);box-shadow:var(--shadow-sm);font-size:18px;opacity:.45;transition:opacity .25s,transform .2s}
.qn-item:hover,.qn-item.show{opacity:1;transform:scale(1.06)}
.qn-item.cur{opacity:1;border-color:var(--maroon);box-shadow:0 0 0 2px var(--maroon-soft)}
.qn-ico{line-height:1}
.qn-tip{position:absolute;right:50px;top:50%;transform:translateY(-50%) translateX(6px);background:var(--ink);color:#fff;font-size:12px;font-weight:800;padding:6px 12px;border-radius:10px;white-space:nowrap;opacity:0;pointer-events:none;transition:opacity .2s,transform .2s}
.qn-item:hover .qn-tip,.qn-item.show .qn-tip{opacity:1;transform:translateY(-50%) translateX(0)}
@media(max-width:720px){.qn-rail{top:120px}.qn-item{width:38px;height:38px;font-size:16px}.qn-tip{right:46px}.qn-arrow{height:58px}}

/* toast */
.toast{position:fixed;bottom:26px;left:50%;transform:translate(-50%,80px);background:var(--ink);color:#fff;padding:13px 26px;border-radius:999px;font-weight:800;font-size:14.5px;z-index:99;opacity:0;transition:.35s cubic-bezier(.2,.6,.2,1);pointer-events:none;box-shadow:var(--shadow)}
.toast.show{opacity:1;transform:translate(-50%,0)}

/* ---------- trust strip ---------- */
.trust-sec{background:var(--surface);border-top:1px solid var(--line);border-bottom:1px solid var(--line);position:relative;z-index:5}
.trust-in{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;padding-top:18px;padding-bottom:18px}
.trust-item{display:flex;flex-direction:column;align-items:center;text-align:center;gap:2px;font-size:15px}
.trust-item b{font-size:14.5px}
.trust-item span{color:var(--muted);font-size:12.5px;font-weight:700}

/* ---------- authors ---------- */
.auth-sec{padding:clamp(80px,12vh,140px) 0;background:linear-gradient(var(--cream),var(--bg))}
.auth-lead{text-align:center;max-width:560px;margin:6px auto 40px;color:var(--muted);font-weight:600;font-size:1.05rem}
.auth-grid{display:grid;grid-template-columns:1fr 1fr;gap:clamp(18px,3vw,34px)}
.auth-card{display:flex;gap:0;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow-sm)}
.auth-photo{flex:0 0 42%;position:relative;display:flex;align-items:flex-end;justify-content:center;overflow:hidden}
.auth-photo.eng{background:linear-gradient(160deg,var(--teal-soft),#CBE7E2)}
.auth-photo.doc{background:linear-gradient(160deg,var(--maroon-soft),#F6D9D9)}
.auth-photo img{width:100%;height:100%;object-fit:cover;object-position:top}
.auth-body{padding:clamp(18px,2.6vw,28px);flex:1}
.auth-body h3{font-weight:700;font-size:1.35rem;color:var(--maroon)}
.auth-cred{display:inline-block;background:var(--teal-soft);color:var(--teal-dark);font-size:12px;font-weight:800;letter-spacing:.04em;padding:5px 12px;border-radius:999px;margin:8px 0 12px}
.auth-body p{color:var(--muted);font-weight:600;font-size:14px;line-height:1.7}
.auth-tag{margin-top:14px;font-size:13px;font-weight:800;color:var(--ink);font-family:var(--font-si)}

/* ---------- benefits ---------- */
.ben-sec{padding:clamp(80px,12vh,140px) 0;background:var(--bg)}
.ben-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:clamp(14px,2vw,24px);margin-top:34px}
.ben-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:24px 20px;box-shadow:var(--shadow-sm);transition:transform .3s,box-shadow .3s}
.ben-card:hover{transform:translateY(-5px);box-shadow:var(--shadow)}
.ben-ico{width:52px;height:52px;border-radius:14px;background:linear-gradient(140deg,var(--teal-soft),#FCF3DF);display:flex;align-items:center;justify-content:center;font-size:26px;margin-bottom:14px}
.ben-card b{display:block;font-size:1.02rem;margin-bottom:8px}
.ben-card p{color:var(--muted);font-size:13.5px;font-weight:600;line-height:1.7}

/* ---------- reviews ---------- */
.rev-sec{padding:clamp(80px,12vh,140px) 0;background:linear-gradient(var(--cream),var(--bg))}
.rev-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:clamp(14px,2vw,24px);margin-top:34px;align-items:start}
.rev-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:16px;box-shadow:var(--shadow-sm)}
.rev-card img{width:100%;border-radius:10px}
.rev-card figcaption{margin-top:12px;font-weight:800;color:var(--maroon);font-size:14px;text-align:right}

/* ---------- final CTA ---------- */
.cta-sec{background:linear-gradient(120deg,var(--maroon),var(--maroon-dark));color:#fff;padding:clamp(70px,10vh,110px) 0}
.cta-in{text-align:center}
.cta-in h2{font-size:clamp(1.6rem,4vw,2.6rem);font-weight:700}
.cta-in p{margin-top:12px;opacity:.92;font-weight:600}
.cta-btns{margin-top:28px;display:flex;gap:14px;justify-content:center;flex-wrap:wrap}
.cta-sec .btn-maroon{background:#fff;color:var(--maroon)}
.cta-sec .btn-maroon:hover{background:var(--cream)}

/* ---------- sample pages gallery (samples.html + landing strip) ---------- */
.sp-head{padding:120px 0 8px;text-align:center}
.sp-head h1{font-family:var(--font-si);font-size:clamp(1.7rem,4.5vw,2.7rem);color:var(--maroon);font-weight:700}
.sp-head p{color:var(--muted);font-weight:700;margin-top:8px;font-size:1.02rem;font-family:var(--font-si)}
.sp-free{display:inline-flex;align-items:center;gap:7px;background:var(--teal-soft);color:var(--teal-dark);border-radius:999px;padding:6px 16px;font-size:12.5px;font-weight:800;margin-top:12px;font-family:var(--font-si)}
.sp-howto{text-align:center;color:var(--maroon);font-weight:800;font-size:13.5px;margin-top:12px;font-family:var(--font-si);animation:spNudge 2.6s ease-in-out infinite}
@keyframes spNudge{0%,100%{opacity:.75}50%{opacity:1}}
@media(prefers-reduced-motion:reduce){.sp-howto{animation:none}}
.sp-chips{display:flex;gap:8px;overflow-x:auto;padding:18px 18px 10px;max-width:1180px;margin:0 auto;-webkit-overflow-scrolling:touch;scrollbar-width:none}
.sp-chips::-webkit-scrollbar{display:none}
.sp-chip{flex:0 0 auto;border:1.5px solid var(--line);background:var(--surface);color:var(--muted);cursor:pointer;font-family:var(--font-si);font-size:12.5px;font-weight:800;border-radius:999px;padding:9px 17px;white-space:nowrap;transition:.15s}
.sp-chip.on{background:var(--maroon);border-color:var(--maroon);color:#fff}
.sp-desc{max-width:640px;margin:8px auto 0;text-align:center;color:var(--muted);font-weight:600;font-size:13.5px;padding:0 20px;font-family:var(--font-si)}
.sp-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(150px,1fr));gap:clamp(12px,2vw,20px);max-width:1180px;margin:0 auto;padding:22px clamp(18px,4vw,40px) 90px}
.sp-card{background:var(--surface);border:1px solid var(--line);border-radius:16px;overflow:hidden;box-shadow:var(--shadow-sm);cursor:pointer;transition:transform .25s,box-shadow .25s;display:flex;flex-direction:column}
.sp-card:hover{transform:translateY(-4px);box-shadow:var(--shadow)}
.sp-card .im{aspect-ratio:1/1;background:var(--cream);position:relative;overflow:hidden}
.sp-card .im img{width:100%;height:100%;object-fit:cover}
.sp-card .im .tag{position:absolute;bottom:8px;left:8px;background:rgba(255,255,255,.95);color:var(--maroon);font-size:10px;font-weight:900;border-radius:999px;padding:4px 10px;font-family:var(--font-si)}
.sp-card .tt{padding:10px 12px 12px;font-family:var(--font-si);font-weight:700;font-size:.92rem;line-height:1.4}
.sp-view{position:fixed;inset:0;z-index:90;background:rgba(23,19,16,.96);display:none;flex-direction:column}
.sp-view.open{display:flex}
.sp-vtop{display:flex;align-items:center;gap:12px;padding:14px 16px;color:#fff}
.sp-vtop .name{font-family:var(--font-si);font-weight:700;font-size:1.05rem;flex:1;min-width:0;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.sp-close{background:rgba(255,255,255,.14);border:none;color:#fff;width:38px;height:38px;border-radius:999px;font-size:19px;cursor:pointer;flex:0 0 auto}
.sp-strip{flex:1;display:flex;gap:12px;overflow-x:auto;scroll-snap-type:x mandatory;align-items:center;padding:0 16px;-webkit-overflow-scrolling:touch;scrollbar-width:none}
.sp-strip::-webkit-scrollbar{display:none}
.sp-pg{flex:0 0 88%;max-width:560px;scroll-snap-align:center;border-radius:14px;overflow:hidden;background:#241B18;box-shadow:0 12px 34px rgba(0,0,0,.5)}
.sp-pg img{width:100%;display:block}
.sp-pg .cap{color:rgba(255,255,255,.8);font-size:11.5px;font-weight:800;text-align:center;padding:8px;letter-spacing:.08em;text-transform:uppercase}
.sp-vfoot{padding:14px 16px calc(16px + env(safe-area-inset-bottom));display:flex;gap:9px;flex-wrap:wrap}
.sp-vfoot a{flex:1;min-width:150px;display:flex;align-items:center;justify-content:center;gap:7px;font-size:13.5px;font-weight:900;border-radius:16px;padding:14px;font-family:var(--font-si)}
.sp-buy{background:var(--gold);color:#2B2220}
.sp-set{background:var(--maroon);color:#fff}
.sp-hint{color:rgba(255,255,255,.55);font-size:11px;font-weight:800;text-align:center;letter-spacing:.14em;text-transform:uppercase;padding-bottom:6px}
/* full sample books (PDF flipbook) */
.fb-sec{max-width:1180px;margin:0 auto;padding:26px clamp(18px,4vw,40px) 6px}
.fb-h{font-family:var(--font-si);font-weight:700;color:var(--maroon);font-size:1.25rem;margin-bottom:4px}
.fb-h small{color:var(--muted);font-family:var(--font-body);font-weight:700;font-size:.8rem;display:block;margin-top:2px}
.fb-row{display:flex;gap:12px;overflow-x:auto;scroll-snap-type:x proximity;padding:16px 2px 10px;-webkit-overflow-scrolling:touch;scrollbar-width:none}
.fb-row::-webkit-scrollbar{display:none}
.fb-card{flex:0 0 168px;scroll-snap-align:start;background:var(--surface);border:2px solid #FFD966;border-radius:16px;overflow:hidden;cursor:pointer;box-shadow:var(--shadow-sm);transition:transform .25s,box-shadow .25s;display:flex;flex-direction:column}
.fb-card:hover{transform:translateY(-4px);box-shadow:var(--shadow)}
.fb-card .im{aspect-ratio:1/1;background:var(--cream);position:relative}
.fb-card .im img{width:100%;height:100%;object-fit:cover}
.fb-card .free{position:absolute;top:8px;left:8px;background:var(--gold);color:#2B2220;font-size:10px;font-weight:900;border-radius:999px;padding:4px 10px;font-family:var(--font-si)}
.fb-card .tt{padding:10px 12px;font-family:var(--font-si);font-weight:700;font-size:.9rem;line-height:1.4}
.fb-card .sr{padding:0 12px 12px;color:var(--muted);font-size:11px;font-weight:800}
.fb-view{position:fixed;inset:0;z-index:95;background:rgba(23,19,16,.97);display:none;flex-direction:column}
.fb-view.open{display:flex}
.fb-stage{flex:1;display:flex;align-items:center;justify-content:center;position:relative;min-height:0;padding:0 8px}
.fb-stage canvas{max-width:100%;max-height:100%;border-radius:10px;box-shadow:0 12px 34px rgba(0,0,0,.55);background:#fff}
.fb-arrow{position:absolute;top:50%;transform:translateY(-50%);background:rgba(255,255,255,.14);border:none;color:#fff;width:44px;height:44px;border-radius:999px;font-size:20px;cursor:pointer;z-index:2}
.fb-arrow.l{left:10px}.fb-arrow.r{right:10px}
.fb-foot{display:flex;align-items:center;justify-content:center;gap:16px;padding:12px 16px calc(14px + env(safe-area-inset-bottom));color:rgba(255,255,255,.85);font-weight:800;font-size:13px}
.fb-load{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;color:#fff;font-weight:800;font-size:13px;letter-spacing:.1em}

/* trim print bleed / crop marks on book scans (containers are overflow:hidden) */
.sp-card .im img,.sp-pg img,.pgc-item img,.fb-card .im img,.card-img img,.sb-img img,.pd-thumbs img{transform:scale(1.1)}
.pd-main img{transform:scale(1.06)}

/* landing samples strip */
.spl-sec{padding:clamp(70px,10vh,110px) 0;background:var(--bg)}
.spl-link{display:block}
.spl-link:hover .si-h{text-decoration:underline}
.spl-more{text-align:center;margin-top:24px}
.spl-row{display:flex;gap:12px;overflow-x:auto;scroll-snap-type:x proximity;padding:20px clamp(18px,4vw,40px) 8px;max-width:1180px;margin:0 auto;-webkit-overflow-scrolling:touch;scrollbar-width:none}
.spl-row::-webkit-scrollbar{display:none}
.spl-row .sp-card{flex:0 0 156px;scroll-snap-align:start}
.spl-more{text-align:center;margin-top:22px}

/* ---------- View Books (samples) nav item — first/top of menu ---------- */
.nav-vb{color:var(--maroon)!important;font-weight:800}
@media(max-width:900px){
  .hdr-nav .nav-vb{background:var(--gold);color:#2B2220!important;border-radius:999px;padding:12px 30px;opacity:1;box-shadow:0 8px 22px -6px rgba(240,161,37,.5)}
}

/* ---------- Brain Check funnel band (design-project concepts) ---------- */
.bcb-sec{padding:0 0 34px;background:var(--bg)}
.bcb-band{background:linear-gradient(150deg,var(--maroon) 0%,#9d2530 55%,#B8314A 100%);color:#fff;text-align:center;padding:clamp(54px,8vh,80px) 22px clamp(64px,9vh,90px)}
.bcb-badge{display:inline-flex;align-items:center;gap:7px;background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.3);border-radius:999px;padding:6px 16px;font-size:12.5px;font-weight:800;letter-spacing:.04em;margin-bottom:20px;font-family:var(--font-si)}
.bcb-badge .dot{width:8px;height:8px;border-radius:999px;background:var(--gold)}
.bcb-band h2{font-family:var(--font-si);font-size:clamp(22px,4.2vw,36px);font-weight:900;line-height:1.35;max-width:680px;margin:0 auto 12px;color:#fff}
.bcb-band p{font-size:clamp(13.5px,2vw,16px);line-height:1.7;color:rgba(255,255,255,.88);max-width:540px;margin:0 auto 26px;font-weight:600}
.bcb-cta{display:inline-block;background:var(--gold);color:#2B2220;font-family:var(--font-si);font-size:16.5px;font-weight:900;border-radius:999px;padding:16px 36px;box-shadow:0 10px 28px -6px rgba(240,161,37,.55);animation:bcbFloat 3.2s ease-in-out infinite}
@keyframes bcbFloat{0%,100%{transform:translateY(0)}50%{transform:translateY(-7px)}}
.bcb-stats{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;max-width:560px;margin:-32px auto 0;padding:0 18px;position:relative;z-index:4}
.bcb-stat{background:var(--surface);border:1px solid var(--line);border-radius:20px;padding:16px 10px;text-align:center;box-shadow:0 8px 24px -8px rgba(43,34,32,.18)}
.bcb-stat b{display:block;font-size:24px;font-weight:900;color:var(--maroon);font-family:var(--font-en)}
.bcb-stat span{font-size:11.5px;font-weight:700;color:var(--muted)}
@media(max-width:560px){.bcb-stat b{font-size:20px}}
@media(prefers-reduced-motion:reduce){.bcb-cta{animation:none}}

/* ---------- mobile hero video + pages carousel ---------- */
.hero-video{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.pgc{padding:clamp(60px,9vh,90px) 0;background:#171310;color:#fff}
.pgc-h{text-align:center;margin-bottom:22px;padding:0 20px}
.pgc-h .si-h{font-family:var(--font-si);font-weight:700;font-size:1.5rem;color:#fff}
.pgc-h .en-h{color:var(--gold);font-weight:800;margin-top:6px;letter-spacing:.14em;text-transform:uppercase;font-size:.78rem}
.pgc-strip{display:flex;gap:14px;overflow-x:auto;scroll-snap-type:x mandatory;padding:6px 20px 18px;-webkit-overflow-scrolling:touch;scrollbar-width:none}
.pgc-strip::-webkit-scrollbar{display:none}
.pgc-item{flex:0 0 82%;scroll-snap-align:center;border-radius:14px;overflow:hidden;background:#241B18;box-shadow:0 10px 26px rgba(0,0,0,.45)}
.pgc-item img{width:100%;aspect-ratio:1/1;object-fit:cover}
.pgc-cap{padding:12px 14px 14px}
.pgc-cap .si{font-weight:700;font-size:1.02rem}
.pgc-cap small{display:block;color:rgba(255,255,255,.65);font-weight:700;font-size:.72rem;letter-spacing:.08em;text-transform:uppercase;margin-top:3px}
.pgc-hint{text-align:center;color:rgba(255,255,255,.55);font-size:12.5px;font-weight:700;letter-spacing:.14em;text-transform:uppercase}

/* ---------- mobile ---------- */
@media(max-width:900px){
  /* right-side drawer menu */
  .hdr-nav{position:fixed;top:0;right:0;bottom:0;left:auto;width:min(78vw,340px);background:rgba(247,245,241,.98);backdrop-filter:blur(16px);flex-direction:column;justify-content:center;align-items:center;font-size:20px;gap:28px;transform:translateX(105%);transition:transform .4s cubic-bezier(.2,.6,.2,1);z-index:65;box-shadow:-18px 0 44px rgba(43,34,32,.22)}
  .hdr-nav.open{transform:none}
  .burger{display:flex}
  .burger.x span:nth-child(1){transform:translateY(7.6px) rotate(45deg)}
  .burger.x span:nth-child(2){opacity:0}
  .burger.x span:nth-child(3){transform:translateY(-7.6px) rotate(-45deg)}
  .expl-grid{grid-template-columns:1fr}
  .pd{grid-template-columns:1fr}
  .pd-gallery{position:static}
  .cart-grid{grid-template-columns:1fr}
  .summary{position:static}
  .hero-sec{height:260vh}
  .pages-sec{height:380vh}
  .hero-tag{letter-spacing:.18em;white-space:normal}
  .auth-grid{grid-template-columns:1fr}
  .auth-card{flex-direction:column}
  .auth-photo{flex:0 0 auto;max-height:340px}
  .auth-photo img{max-height:340px;object-fit:contain}
  .ben-grid{grid-template-columns:1fr 1fr}
  .rev-grid{grid-template-columns:1fr}
  .trust-in{grid-template-columns:1fr 1fr;gap:10px}
  .cart-item{grid-template-columns:64px 1fr}
  .cart-item img{width:64px;height:64px}
  .ci-right{grid-column:1/-1;flex-direction:row;justify-content:space-between;align-items:center}
}
/* phones: hero keeps the pinned orbit scroll-scrub; pages fall back to swipe carousel */
@media(max-width:720px){
  .pages-sec{height:auto;background:#171310}
  .pages-sec .scrub-pin{display:none}
}
@media(prefers-reduced-motion:reduce){
  .rv{opacity:1;transform:none;transition:none}
  .hero-sec{height:auto}
  .pages-sec{height:auto}
  .scrub-pin{position:relative;height:100vh}
  .hero-scroll-hint::after{animation:none}
}

/* ---- backend checkout (district/city, free tiers, order success) ---- */
.checkout-form select{width:100%;padding:13px 15px;border-radius:12px;border:2px solid var(--line);font-family:var(--font-body);font-size:15.5px;font-weight:600;background:var(--bg);appearance:none;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='14' height='9'%3E%3Cpath d='M1 1l6 6 6-6' stroke='%238E2125' stroke-width='2' fill='none' stroke-linecap='round'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right 15px center}
.checkout-form select:focus{outline:none;border-color:var(--teal)}
.checkout-form select:disabled{opacity:.55;cursor:not-allowed}
.co-two{display:grid;grid-template-columns:1fr 1fr;gap:12px}
@media(max-width:560px){.co-two{grid-template-columns:1fr}}
.co-place{font-size:17px;padding:16px 30px;margin-top:4px}
.co-place:disabled{opacity:.6;transform:none;cursor:wait}

.gift-banner.tiered{flex-direction:column;align-items:stretch;gap:9px}
.gift-now{font-size:14.5px}
.gift-next{display:flex;flex-direction:column;gap:7px}
.gift-bar{height:8px;border-radius:999px;background:rgba(142,33,37,.12);overflow:hidden}
.gift-bar span{display:block;height:100%;border-radius:999px;background:linear-gradient(90deg,var(--teal),var(--maroon));transition:width .5s ease}
.gift-hint{font-size:12.5px;color:var(--muted)}

.order-success{max-width:560px;margin:0 auto;text-align:center;padding:46px 18px 90px}
.order-success .os-emoji{font-size:56px;margin-bottom:10px}
.order-success h2{font-size:clamp(1.5rem,4vw,2.1rem);color:var(--maroon);margin-bottom:14px}
.os-ref{font-size:1.05rem;background:var(--maroon-soft);color:var(--maroon-dark);display:inline-block;padding:9px 20px;border-radius:999px;font-weight:800;margin-bottom:12px}
.os-total{font-weight:800;font-size:1.1rem;margin-bottom:6px}
.os-total small{color:var(--muted);font-weight:600}
.os-free{margin:12px auto;background:linear-gradient(100deg,var(--teal-soft),#FCF3DF);border-radius:14px;padding:12px 18px;font-weight:800;color:var(--teal-dark);max-width:420px}
.os-actions{display:flex;gap:12px;justify-content:center;flex-wrap:wrap;margin:22px 0 8px}
.os-links{display:flex;gap:22px;justify-content:center;flex-wrap:wrap;margin-top:16px;font-weight:700}
.os-links a{color:var(--maroon)}
.os-links a:hover{text-decoration:underline}

/* ---- මේ පොතේ Quiz එක (parent asks child) ---- */
.bq-sec{max-width:680px;margin:10px auto 0;padding:0 0 90px}
.bq-head{text-align:center;margin-bottom:20px}
.bq-t{font-size:1.35rem;font-weight:900;color:var(--maroon)}
.bq-s{color:var(--muted);font-weight:700;font-size:13.5px;margin-top:6px}
.bq-card{background:var(--surface);border:1px solid var(--line);border-radius:22px;padding:20px;box-shadow:var(--shadow-sm);margin-bottom:14px}
.bq-q{font-weight:800;font-size:1.02rem;line-height:1.55;margin-bottom:14px}
.bq-opts{display:flex;flex-direction:column;gap:8px}
.bq-opt{text-align:left;background:var(--bg);border:2px solid var(--line);border-radius:16px;padding:12px 16px;font-size:14.5px;font-weight:700;color:var(--ink);cursor:pointer;transition:.15s}
.bq-opt:hover{border-color:var(--gold);background:#FFFBEB}
.bq-card.done .bq-opt{cursor:default;opacity:.75}
.bq-card.done .bq-opt.ok{border-color:#16a34a;background:#dcfce7;color:#14532d;opacity:1}
.bq-card.done .bq-opt.no{border-color:#dc2626;background:#fee2e2;color:#7f1d1d;opacity:1}
.bq-fb{margin-top:10px;font-weight:800;font-size:13.5px;min-height:0}
.bq-score{display:none;background:linear-gradient(135deg,#FFF8E7,#FFEFC7);border:2px solid #FFD966;border-radius:18px;padding:16px 18px;font-weight:800;color:#7a4700;text-align:center;font-size:15px}
.bq-score.show{display:block;animation:bcbFloat .6s ease}

/* ---- single-book detail page ---- */
.bk-series-link{display:inline-block;font-weight:800;font-size:14px;color:var(--maroon);margin-bottom:10px}
.bk-series-link:hover{text-decoration:underline}
.bk-pages-note{margin-top:10px;font-size:13px;font-weight:700;color:var(--muted);text-align:center}
.bk-set-hint{margin-top:18px;background:linear-gradient(100deg,var(--teal-soft),#FCF3DF);border-radius:14px;padding:13px 16px;font-size:14px;font-weight:700;color:var(--teal-dark)}
.bk-set-hint a{color:var(--maroon);text-decoration:underline}
.bk-nav{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin-top:22px;padding-top:16px;border-top:2px solid var(--line);font-size:13.5px;font-weight:800}
.bk-nav a{color:var(--maroon)}
.bk-nav a:hover{text-decoration:underline}