/* ============================================================
   The Water We Swim In (WWSI) — teacher module styles
   Production port of the approved preview (rounds 2–8e).
   Every rule is scoped under .wwsi (the module view, its opening,
   Present in class and its help panel), so nothing here reaches the
   rest of the portal. The only unscoped rules are the @font-face
   declarations for the two WWSI typefaces, which define families the
   portal does not use.
   ============================================================ */

/* ---------- WWSI typefaces, self-hosted (Ysabeau Office: OFL 1.1; Satisfy: Apache 2.0) ---------- */
@font-face{font-family:"Ysabeau Office";src:url("assets/wwsi/fonts/ysabeau-office-latin-700-normal.woff2") format("woff2");font-weight:700;font-style:normal;font-display:swap}
@font-face{font-family:"Ysabeau Office";src:url("assets/wwsi/fonts/ysabeau-office-latin-800-normal.woff2") format("woff2");font-weight:800;font-style:normal;font-display:swap}
@font-face{font-family:"Ysabeau Office";src:url("assets/wwsi/fonts/ysabeau-office-latin-900-normal.woff2") format("woff2");font-weight:900;font-style:normal;font-display:swap}
@font-face{font-family:"Satisfy";src:url("assets/wwsi/fonts/satisfy-latin-400-normal.woff2") format("woff2");font-weight:400;font-style:normal;font-display:swap}

/* ---------- tokens: WWSI sub-brand (brand style guide v1.0) and the module palette, light by default ---------- */
.wwsi{
  --w-navy:#02274B; --w-current:#013C5E; --w-steel:#035271; --w-teal:#0B6882; --w-light:#7FD4E8;
  --w-foam:#F2F5F7; --w-ink:#0A1526; --w-line:#DCE3E8;
  --w-ramp:linear-gradient(180deg,#02274B,#022D50,#023456,#013C5E,#034866,#035271,#045C78,#0E7894);
  --f-display:"Ysabeau Office","Cera Pro",sans-serif;
  --f-script:"Satisfy",cursive;
  --w-ease:cubic-bezier(.22,.61,.36,1);
  --caustic:url("assets/wwsi/caustic.webp"); --caustic-l:url("assets/wwsi/caustic-light.webp");
  --m-bg:#F2F5F7; --m-tex:var(--caustic-l); --m-tex-op:.5;
  --m-ink:#0A1526; --m-ink-2:rgba(10,21,38,.72); --m-ink-3:rgba(10,21,38,.66);
  --m-accent:#0B6882; --m-line:#DCE3E8; --m-panel:#FFFFFF; --m-panel-b:#DCE3E8;
  --m-track:#DFE7EB; --m-bar:#0B6882; --m-shadow:0 10px 30px rgba(2,39,75,.10);
  --m-btn2:#FFFFFF; --m-btn2-b:#C9D5DC; --m-btn2-fg:#0A1526;
  --m-tile-shadow:0 10px 26px rgba(2,39,75,.18); --m-chip:#E6EEF2; --m-band:#FFFFFF;
}
.wwsi[data-mode="dark"]{
  --m-bg:#0A1526; --m-tex:var(--caustic); --m-tex-op:.6;
  --m-ink:#F2F5F7; --m-ink-2:rgba(242,245,247,.76); --m-ink-3:rgba(242,245,247,.66);
  --m-accent:#7FD4E8; --m-line:rgba(242,245,247,.13); --m-panel:rgba(242,245,247,.06); --m-panel-b:rgba(242,245,247,.13);
  --m-track:rgba(242,245,247,.16); --m-bar:#7FD4E8; --m-shadow:none;
  --m-btn2:rgba(242,245,247,.08); --m-btn2-b:rgba(242,245,247,.28); --m-btn2-fg:#F2F5F7;
  --m-tile-shadow:0 12px 30px rgba(0,0,0,.4); --m-chip:rgba(242,245,247,.08); --m-band:#06101E;
}

/* ---------- header: the portal's own app bar classes (same as the Keeping Faith Matrix view) ---------- */
.wwsi .appbar .wwsi-mt{font-family:var(--font-head);font-weight:700;color:var(--navy);font-size:16px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;display:block}
.wwsi .appbar .wwsi-ctx{white-space:nowrap}
.wwsi .appbar .back-btn .ico{width:16px;height:16px}

/* ---------- module band: square mark, Teaching Guide | Sessions, Help, light/dark ---------- */
.wwsi .wband{position:relative;z-index:2;border-bottom:1px solid var(--m-line);background:var(--m-band);color:var(--m-ink);transition:background .4s var(--w-ease)}
.wwsi:not([data-mode="dark"]) .wband{--m-chip:#EEF2F4}
.wwsi[data-mode="dark"] .wband{--m-chip:rgba(242,245,247,.07);--m-line:rgba(242,245,247,.12);--m-ink-2:rgba(242,245,247,.74)}
.wwsi .wband .in{max-width:1320px;margin:0 auto;display:grid;grid-template-columns:1fr auto 1fr;gap:16px;align-items:center;padding-block:12px;padding-left:max(16px,env(safe-area-inset-left,0px));padding-right:max(16px,env(safe-area-inset-right,0px))}
.wwsi .wband .l{display:flex;align-items:center;gap:10px;min-width:0}
.wwsi .wband .l img{height:34px;width:auto;display:block}
.wwsi .wband .c{display:flex;align-items:center;gap:12px}
.wwsi .wband .r{display:flex;justify-content:flex-end}
.wwsi .wsnav{display:inline-flex;gap:2px;padding:5px;border-radius:999px;background:var(--m-chip);border:1px solid var(--m-line)}
.wwsi .wsnav button{border:0;background:transparent;padding:9px 20px;border-radius:999px;font-family:var(--font-head);font-weight:600;font-size:14px;color:var(--m-ink-2);white-space:nowrap;cursor:pointer}
.wwsi .wsnav button.on{background:linear-gradient(135deg,#034866,#02274B);color:#fff;box-shadow:0 6px 16px rgba(2,39,75,.3)}
.wwsi .whelp{display:inline-flex;align-items:center;gap:8px;border:1.5px solid var(--m-btn2-b);background:var(--m-btn2);color:var(--m-btn2-fg);border-radius:999px;padding:8px 16px 8px 8px;font-family:var(--font-head);font-weight:600;font-size:14px;cursor:pointer}
.wwsi .whelp i{width:24px;height:24px;border-radius:50%;background:var(--m-chip);display:flex;align-items:center;justify-content:center;font-style:normal;font-weight:700;font-size:13px}
.wwsi .tsw{display:inline-flex;gap:2px;padding:4px;border-radius:999px;background:var(--m-chip);border:1px solid var(--m-line)}
.wwsi .tsw button{border:0;background:transparent;color:var(--m-ink-2);border-radius:999px;padding:6px 12px;font-family:var(--font-head);font-weight:600;font-size:12.5px;display:inline-flex;align-items:center;gap:6px;cursor:pointer}
.wwsi .tsw button[aria-pressed="true"]{background:var(--m-panel);color:var(--m-ink);box-shadow:0 2px 8px rgba(2,39,75,.12)}
.wwsi[data-mode="dark"] .tsw button[aria-pressed="true"]{background:#02274B;color:#fff;box-shadow:none}

/* ---------- the module surface ---------- */
.wwsi .dw{position:relative;display:block;background:var(--m-bg);color:var(--m-ink);min-height:100vh;overflow:hidden;font-family:var(--font-body);font-size:15.5px;line-height:1.55;transition:background .4s var(--w-ease),color .4s var(--w-ease)}
.wwsi .dw::before{content:"";position:absolute;inset:0 0 auto;height:1100px;background-image:var(--m-tex);background-size:1600px auto;background-position:center top;opacity:var(--m-tex-op);pointer-events:none}
.wwsi .dw::after{content:"";position:absolute;inset:0 0 auto;height:1100px;background:linear-gradient(180deg,transparent 40%,var(--m-bg));pointer-events:none}
.wwsi .dw>*{position:relative;z-index:1}
.wwsi .dw h1,.wwsi .dw h2,.wwsi .dw h3,.wwsi .dw h4,.wwsi .dw h5{font-family:var(--font-head);color:var(--m-ink);line-height:1.2;font-weight:700;margin:0;text-wrap:balance}
.wwsi .dw p{margin:0}
.wwsi .dw img{max-width:100%;display:block}
.wwsi .dw button{font-family:inherit;cursor:pointer}
.wwsi .dw :focus-visible,.wwsi .wband :focus-visible,.wwsi.wwsi-present :focus-visible,.wwsi.wwsi-intro :focus-visible{outline:2px solid var(--m-accent);outline-offset:2px}
.wwsi .ico{width:1em;height:1em;flex-shrink:0}
.wwsi .wwsi-sr{position:absolute!important;width:1px!important;height:1px!important;padding:0!important;margin:-1px!important;overflow:hidden!important;clip:rect(0,0,0,0)!important;white-space:nowrap!important;border:0!important}
.wwsi .dw .bin{max-width:1320px;margin:0 auto;padding-left:max(16px,env(safe-area-inset-left,0px));padding-right:max(16px,env(safe-area-inset-right,0px))}
.wwsi .dw .bin>.hero2:first-child,.wwsi .dw .bin>.sbar:first-child,.wwsi .dw .bin>.trh:first-child,.wwsi .dw .bin>.draftbar:first-child{margin-top:18px}
.wwsi .dw .muted{color:var(--m-ink-2)}
.wwsi-view.wwsi-enter .dw{animation:wwsiPgIn .95s cubic-bezier(.22,.61,.36,1)}
@keyframes wwsiPgIn{from{opacity:0;transform:scale(1.035);filter:blur(6px)}to{opacity:1;transform:none;filter:none}}

/* type */
.wwsi .disp{font-family:var(--f-display);font-weight:850;letter-spacing:-.005em;line-height:1.04;font-variant-numeric:lining-nums}
.wwsi .script{font-family:var(--f-script);font-weight:400;letter-spacing:0;text-transform:none}
.wwsi .lbl{font-family:var(--font-head);font-weight:500;font-size:12px;letter-spacing:.08em;text-transform:uppercase;color:var(--m-accent)}
.wwsi .adv-l{display:inline-flex;align-items:center;gap:8px;font-family:var(--font-head);font-weight:500;font-size:11px;letter-spacing:.1em;text-transform:uppercase;color:var(--m-ink-2)}
.wwsi .adv-l::before{content:"";width:2px;height:14px;background:var(--m-accent);border-radius:2px}
.wwsi .fl{display:flex;gap:8px;flex-wrap:wrap}

/* buttons */
.wwsi .wbtn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border:0;border-radius:999px;padding:11px 22px;font-size:14.5px;font-weight:600;font-family:var(--font-head);white-space:nowrap;transition:transform .18s var(--w-ease),box-shadow .18s var(--w-ease),background .18s;text-decoration:none;cursor:pointer;line-height:1.2}
.wwsi .wbtn:hover{transform:translateY(-1px)}
.wwsi .wbtn-teal{background:var(--w-teal);color:#fff;box-shadow:0 8px 22px rgba(2,39,75,.28)}
.wwsi .wbtn-teal:hover{background:#09597a}
.wwsi .wbtn-2{background:var(--m-btn2);color:var(--m-btn2-fg);border:1px solid var(--m-btn2-b);backdrop-filter:blur(10px)}
.wwsi .wbtn-2:hover{border-color:var(--m-accent)}
.wwsi .wbtn-sm{padding:7px 14px;font-size:13px}

/* thumbnails, progress bars */
.wwsi .thumb{position:relative;display:block;aspect-ratio:16/9;overflow:hidden;background:var(--w-navy);max-width:100%}
.wwsi .thumb img{width:100%;height:100%;object-fit:cover}
.wwsi .thumb .play{position:absolute;inset:0;margin:auto;width:54px;height:54px;border-radius:50%;background:rgba(10,21,38,.55);border:1.5px solid rgba(242,245,247,.55);display:flex;align-items:center;justify-content:center;color:#fff;opacity:0;transition:opacity .25s var(--w-ease),transform .25s var(--w-ease);transform:scale(.92)}
.wwsi .thumb .play .ico{width:20px;height:20px;margin-left:3px}
.wwsi button:hover .thumb .play,.wwsi button:focus-visible .thumb .play{opacity:1;transform:scale(1)}
.wwsi .wbar{display:block;height:4px;background:var(--m-track);border-radius:999px;overflow:hidden}
.wwsi .wbar i{display:block;height:100%;background:var(--m-bar);border-radius:999px}
.wwsi .noth{width:100%;height:100%;display:flex;align-items:center;justify-content:center;background:var(--w-navy)}
.wwsi .noth img{width:28%;opacity:.8}
.wwsi .poster.gen{position:relative;display:flex;aspect-ratio:16/9;width:100%;height:100%;background-size:cover;background-position:center;align-items:center;justify-content:center}
.wwsi .poster.gen .pin{display:flex;flex-direction:column;align-items:center;gap:10px;color:#fff;text-align:center;padding:16px}
.wwsi .poster.gen .pin img{width:min(180px,40%)}
.wwsi .poster.gen .pt{display:block;font-family:var(--f-display);font-weight:700;font-size:clamp(14px,2vw,22px)}
.wwsi .tile2 .poster.gen .pin img{width:46%}
.wwsi .tile2 .poster.gen .pt{font-size:12px}

/* player */
.wwsi .player{position:relative;aspect-ratio:16/9;background:var(--w-ink);overflow:hidden;max-width:100%}
.wwsi .player>img{width:100%;height:100%;object-fit:cover}
.wwsi .player .pbtn{position:absolute;inset:0;border:0;background:linear-gradient(0deg,rgba(10,21,38,.45),transparent 45%);display:flex;align-items:center;justify-content:center;color:#fff;width:100%;cursor:pointer;padding:0}
.wwsi .player .pbtn span{width:76px;height:76px;border-radius:50%;background:rgba(10,21,38,.55);border:2px solid rgba(242,245,247,.7);display:flex;align-items:center;justify-content:center;transition:transform .25s var(--w-ease),background .25s}
.wwsi .player .pbtn:hover span,.wwsi .player .pbtn:focus-visible span{transform:scale(1.06);background:var(--w-teal)}
.wwsi .player .pbtn .ico{width:28px;height:28px;margin-left:4px}
.wwsi .player.on .pbtn{display:none}
.wwsi .player.embed{background:#000}
.wwsi .player.embed iframe{position:absolute;inset:0;width:100%;height:100%;border:0}
.wwsi .pl-empty{position:absolute;left:0;right:0;bottom:16px;text-align:center;color:#fff;font-family:var(--font-head);font-weight:600;font-size:14px}
/* Coming soon */
.wwsi .player.soon>img{filter:saturate(.7) brightness(.5) blur(1.5px)}
.wwsi .soonb{position:absolute;inset:0;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:10px;text-align:center;padding:16px;color:#F2F5F7}
.wwsi .soonc{display:flex;flex-direction:column;align-items:center;gap:10px;padding:20px 26px;border-radius:16px;background:rgba(10,21,38,.84);border:1px solid rgba(143,214,234,.25);box-shadow:0 10px 30px rgba(0,0,0,.35)}
.wwsi .soonp{font-family:var(--font-head);font-weight:700;font-size:15px;letter-spacing:.08em;text-transform:uppercase;padding:9px 16px;border-radius:999px;background:transparent;border:1px solid rgba(143,214,234,.55);color:#F2F5F7}
.wwsi .soonb p{margin:0;font-size:15px;max-width:420px;color:#F2F5F7}
/* under the video: Open on YouTube, Download */
.wwsi .vrow{display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap;margin-top:10px}
.wwsi .ytalt{font-size:12.5px;color:var(--m-ink-2);margin:0}
.wwsi .ytalt a{color:var(--m-accent);font-weight:600}
.wwsi .vrow .dlbtn{margin-left:auto}
.wwsi .dlwrap{position:relative;display:inline-flex;margin-left:auto}
.wwsi .dlwrap .dlbtn{margin-left:0}
.wwsi .dlbtn[aria-disabled="true"]{opacity:.62;cursor:default;transform:none}
.wwsi .dltip{position:absolute;bottom:calc(100% + 8px);right:0;white-space:nowrap;font-family:var(--font-head);font-weight:700;font-size:13px;padding:7px 12px;border-radius:8px;background:#0A1526;color:#F2F5F7;box-shadow:0 6px 18px rgba(0,0,0,.25);opacity:0;visibility:hidden;transform:translateY(4px);transition:opacity .15s,transform .15s;pointer-events:none;z-index:5}
.wwsi .dltip::after{content:"";position:absolute;top:100%;right:18px;border:6px solid transparent;border-top-color:#0A1526}
.wwsi .dlwrap:hover .dltip,.wwsi .dlwrap:focus-within .dltip,.wwsi .dlwrap.tipon .dltip{opacity:1;visibility:visible;transform:none}
.wwsi .dlwrap.tiphide .dltip{opacity:0;visibility:hidden}

/* content advisory */
.wwsi .advbox{background:var(--w-navy);color:#F2F5F7;border-radius:14px;padding:20px 22px;position:relative;overflow:hidden;border:1px solid rgba(127,212,232,.25)}
.wwsi .advbox::after{content:"";position:absolute;inset:0;background-image:var(--caustic);background-size:cover;background-position:center;opacity:.35;pointer-events:none}
.wwsi .advbox>*{position:relative;z-index:1}
.wwsi .advbox .lbl{color:var(--w-light)}
.wwsi .advbox p.st{font-family:var(--f-display);font-weight:700;font-size:18px;line-height:1.35;margin:8px 0 0;color:#fff}

/* draft, empty and error states */
.wwsi .draftbar{display:flex;align-items:center;gap:8px;background:#FFF;color:#0A1526;border:1.5px dashed #0B6882;border-radius:12px;padding:10px 14px;font-size:14px}
.wwsi[data-mode="dark"] .draftbar{background:rgba(242,245,247,.08);color:#F2F5F7;border-color:#7FD4E8}
.wwsi .empty-t{padding:40px 0;text-align:center}
.wwsi .wstate{max-width:640px;margin:60px auto;background:var(--m-panel);border:1px solid var(--m-panel-b);border-radius:18px;padding:28px 30px;box-shadow:var(--m-shadow)}
.wwsi .wstate h1{font-size:24px;margin-bottom:10px}
.wwsi .wstate h1:focus{outline:none}
.wwsi .wstate p{color:var(--m-ink-2);font-size:15px}
.wwsi .wstate p+p{margin-top:16px}
.wwsi .dp{background:var(--m-panel);border:1px solid var(--m-panel-b);border-radius:16px;padding:22px 24px;box-shadow:var(--m-shadow)}

/* ---------- Sessions page ---------- */
.wwsi .hero2{position:relative;display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:24px;align-items:end;min-height:470px;margin-top:4px}
.wwsi .hero2 .l{display:flex;flex-direction:column;gap:18px;padding-top:18px;padding-bottom:120px;position:relative;z-index:3}
.wwsi .hero2 .l img.lg{width:300px;max-width:80%}
.wwsi .hero2 .line{font-family:var(--f-display);font-weight:850;font-size:clamp(30px,3.3vw,44px);line-height:1.1;max-width:19ch;color:var(--m-ink)}
.wwsi .hero2 .line .script{color:var(--m-accent);font-size:1.22em;line-height:.8}
.wwsi .hero2 .facts{font-size:13.5px;color:var(--m-ink-2);display:flex;flex-wrap:wrap;gap:6px 16px}
.wwsi .hero2 .facts b{font-family:var(--font-head);color:var(--m-ink)}
.wwsi .hero2 .pres{position:relative;z-index:1;width:100%;max-width:760px;justify-self:end;margin-bottom:34px}
.wwsi:not([data-mode="dark"]) .hero2 .pres{filter:drop-shadow(0 18px 30px rgba(2,39,75,.22))}
.wwsi .hero2 h1.wwsi-sr:focus{outline:none}
.wwsi .waves{position:absolute;left:50%;transform:translateX(-50%);bottom:0;width:100vw;height:170px;z-index:2;pointer-events:none;overflow:hidden}
.wwsi .waves svg{position:absolute;bottom:0;left:0;width:200%;height:100%}
.wwsi .waves .w1{animation:wwsiWv 38s linear infinite}.wwsi .waves .w2{animation:wwsiWv 30s linear infinite reverse}.wwsi .waves .w3{animation:wwsiWv 26s linear infinite}.wwsi .waves .w4{animation:wwsiWv 21s linear infinite reverse}.wwsi .waves .w5{animation:wwsiWv 34s linear infinite}
.wwsi .waves.paused svg{animation-play-state:paused}
@keyframes wwsiWv{to{transform:translateX(-50%)}}
.wwsi .upnext2{display:grid;grid-template-columns:150px minmax(0,1fr) auto;gap:16px;align-items:center;background:var(--m-panel);border:1px solid var(--m-panel-b);box-shadow:var(--m-shadow);backdrop-filter:blur(14px);border-radius:16px;padding:12px;max-width:540px;width:100%;text-align:left;font:inherit;color:var(--m-ink);cursor:pointer}
.wwsi .upnext2 .thumb{border-radius:9px}
.wwsi .upnext2 .un-t{display:block;min-width:0}
.wwsi .upnext2 .lbl{display:block}
.wwsi .upnext2 b{font-family:var(--f-display);font-weight:700;font-size:19px;display:block;margin:2px 0 6px}
.wwsi .upnext2 small{color:var(--m-ink-2);font-size:12.5px;display:block;margin-top:6px}
.wwsi .upnext2 .go{width:42px;height:42px;border-radius:50%;background:var(--w-teal);color:#fff;display:flex;align-items:center;justify-content:center}
.wwsi .upnext2 .go .ico{width:16px;height:16px;margin-left:2px}
.wwsi .row2{margin-bottom:36px}
.wwsi .row2-h{display:flex;align-items:center;gap:14px;margin-bottom:14px;flex-wrap:wrap}
.wwsi .row2-h .sw{width:34px;height:10px;border-radius:999px;background:var(--w-ramp);filter:hue-rotate(var(--hue))}
.wwsi .row2-h h2{font-family:var(--f-display);font-weight:700;font-size:23px}
.wwsi .row2-h .meta{font-size:13px;color:var(--m-ink-3)}
.wwsi .row2-h .bp{display:flex;align-items:center;gap:10px;font-size:12.5px;color:var(--m-ink-2);margin-left:auto}
.wwsi .row2-h .bp .wbar{width:90px}
.wwsi .row2-h .arr{display:flex;gap:6px}
.wwsi .row2-h .arr button{width:34px;height:34px;border-radius:50%;border:1px solid var(--m-btn2-b);background:var(--m-btn2);color:var(--m-btn2-fg);display:flex;align-items:center;justify-content:center;padding:0}
.wwsi .row2-h .arr button:hover{border-color:var(--m-accent)}
.wwsi .rail2{display:grid;grid-auto-flow:column;grid-auto-columns:minmax(250px,292px);gap:16px;overflow-x:auto;padding:4px 2px 14px;margin:0;list-style:none;scroll-snap-type:x mandatory;scrollbar-width:thin;scrollbar-color:var(--m-track) transparent;scroll-behavior:smooth}
.wwsi .rail2>li{scroll-snap-align:start;min-width:0;list-style:none}
.wwsi .tile2{border:0;background:none;padding:0;margin:0;width:100%;text-align:left;font:inherit;color:var(--m-ink);display:flex;flex-direction:column;gap:9px;cursor:pointer}
.wwsi .tile2 .thumb{border-radius:11px;box-shadow:var(--m-tile-shadow);transition:transform .35s var(--w-ease),box-shadow .35s var(--w-ease);width:100%}
.wwsi .tile2:hover .thumb{transform:translateY(-4px)}
.wwsi .tile2 .thumb .pg{position:absolute;left:0;right:0;bottom:0;height:4px;background:rgba(10,21,38,.45)}
.wwsi .tile2 .thumb .pg i{display:block;height:100%;background:var(--w-light)}
.wwsi .tile2 .thumb .done{position:absolute;right:8px;top:8px;width:24px;height:24px;border-radius:50%;background:var(--w-teal);color:#fff;display:flex;align-items:center;justify-content:center;font-size:13px;box-shadow:0 2px 8px rgba(0,0,0,.3)}
.wwsi .tile2 .tt{display:flex;justify-content:space-between;gap:10px;font-family:var(--font-head);font-weight:600;font-size:13.5px}
.wwsi .tile2 .tt span{color:var(--m-ink-3);font-weight:500;white-space:nowrap}
.wwsi .tile2 .ti{display:block;font-size:13px;color:var(--m-ink-2);line-height:1.35;margin-top:-4px}

/* ---------- one session, one scroll ---------- */
.wwsi .sbar{display:flex;align-items:center;gap:12px;flex-wrap:wrap;margin:6px 0 16px}
.wwsi .sbar .pg2{display:flex;align-items:center;gap:8px;font-family:var(--font-head);font-weight:600;font-size:13px;color:var(--m-ink-2)}
.wwsi .sbar .pg2 button{width:32px;height:32px;border-radius:50%;border:1px solid var(--m-btn2-b);background:var(--m-btn2);color:var(--m-btn2-fg);display:flex;align-items:center;justify-content:center;padding:0}
.wwsi .sbar .pg2 button:disabled{opacity:.4;cursor:default}
.wwsi .s8{max-width:960px;margin:0 auto}
.wwsi .s8head{margin:18px 0 10px}
.wwsi .s8head .lbl{font-weight:700;font-size:13px;letter-spacing:.12em}
.wwsi .s8head h1{font-size:clamp(34px,5.2vw,58px);margin:6px 0 8px;font-family:var(--f-display);font-weight:850}
.wwsi .s8head h1:focus{outline:none}
.wwsi .s8head p{font-size:18px;line-height:1.55;color:var(--m-ink-2);max-width:760px}
.wwsi .s8acts{display:flex;align-items:center;gap:14px;flex-wrap:wrap;margin-top:16px}
.wwsi .s8prog{font-size:13px;color:var(--m-ink-3)}
.wwsi .s8adv{margin:18px 0 0}
.wwsi .s8sec{margin:34px 0 0;scroll-margin-top:90px}
.wwsi .s8sec>h2,.wwsi .s8vh h2{font-size:24px;line-height:1.2;margin:0 0 12px}
.wwsi .s8kick{display:flex;align-items:center;gap:8px;font-family:var(--font-head);font-weight:700;font-size:12.5px;letter-spacing:.08em;text-transform:uppercase;color:var(--m-accent);margin-bottom:6px}
.wwsi .s8kick .ico{width:16px;height:16px}
.wwsi .s8out{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px}
.wwsi .s8oc{background:var(--m-panel);border:1px solid var(--m-panel-b);border-radius:16px;padding:18px 20px;box-shadow:var(--m-shadow)}
.wwsi .s8ol{display:flex;align-items:baseline;gap:8px;margin-bottom:8px}
.wwsi .s8ol b{font-family:var(--font-head);font-weight:800;font-size:13px;letter-spacing:.12em;text-transform:uppercase;color:var(--m-accent)}
.wwsi .s8ol span{font-size:12.5px;color:var(--m-ink-3)}
.wwsi .s8oc p{font-size:15px;line-height:1.55;color:var(--m-ink)}
.wwsi .s8oc b{color:var(--m-ink)}
.wwsi .s8vid{padding-top:6px}
.wwsi .s8vh{display:flex;align-items:center;gap:12px;flex-wrap:wrap;margin-bottom:12px}
.wwsi .s8vh h2{margin:0}
.wwsi .s8meta{font-size:13px;color:var(--m-ink-3)}
.wwsi .s8mark{margin-left:auto}
.wwsi .s8mark[aria-pressed="true"]{border-color:var(--m-accent);color:var(--m-accent)}
.wwsi .s8vid .player{border-radius:16px;box-shadow:0 30px 70px rgba(2,39,75,.35)}
.wwsi[data-mode="dark"] .s8vid .player{box-shadow:0 30px 80px rgba(0,0,0,.55)}
.wwsi .s8talk,.wwsi .s8extra{background:var(--m-panel);border:1px solid var(--m-panel-b);border-radius:18px;padding:22px 26px;box-shadow:var(--m-shadow)}
.wwsi .s8lead{font-size:15px;color:var(--m-ink-2);margin-bottom:10px}
.wwsi .s8note{font-size:15px;color:var(--m-ink-2);border-left:3px solid var(--m-accent);padding-left:12px;margin:0 0 12px}
.wwsi .s8qs{list-style:none;counter-reset:wq;margin:0;padding:0}
.wwsi .s8qs>li{counter-increment:wq;position:relative;padding:12px 0 12px 46px;border-top:1px solid var(--m-line);font-size:16px;line-height:1.6;color:var(--m-ink)}
.wwsi .s8qs>li:first-child{border-top:0}
.wwsi .s8qs>li::before{content:counter(wq);position:absolute;left:0;top:12px;width:30px;height:30px;border-radius:50%;display:grid;place-items:center;font-family:var(--font-head);font-weight:700;font-size:14px;color:var(--m-bg);background:var(--m-accent)}
.wwsi .s8qs p{margin:0}
.wwsi .s8body{font-size:16px;line-height:1.65;color:var(--m-ink)}
.wwsi .s8body p{margin:0 0 10px}
.wwsi .s8body .m8h{font-size:15px;font-family:var(--font-head);font-weight:700;letter-spacing:.06em;text-transform:uppercase;color:var(--m-accent);margin:18px 0 6px}
.wwsi .s8body .m8s{font-size:17px;font-family:var(--font-head);font-weight:700;color:var(--m-ink);margin:16px 0 6px}
.wwsi .m8ul,.wwsi .m8ol{margin:4px 0 12px;padding-left:22px}
.wwsi .m8ul{list-style:disc}.wwsi .m8ol{list-style:decimal}
.wwsi .m8ul li,.wwsi .m8ol li{margin:4px 0}
.wwsi .m8ul ul{margin:4px 0;padding-left:20px;list-style:circle}
.wwsi .m8q{margin:8px 0 12px;padding:10px 16px;border-left:3px solid var(--m-accent);background:var(--m-chip);border-radius:0 10px 10px 0}
.wwsi .m8q p{margin:0}
.wwsi .s8det{background:var(--m-panel);border:1px solid var(--m-panel-b);border-radius:18px;box-shadow:var(--m-shadow);overflow:hidden}
.wwsi .s8det>summary{display:flex;align-items:center;gap:14px;flex-wrap:wrap;padding:18px 22px;cursor:pointer;list-style:none}
.wwsi .s8det>summary::-webkit-details-marker{display:none}
.wwsi .s8det>summary:focus-visible{outline:2px solid var(--m-accent);outline-offset:-2px}
.wwsi .s8at{font-family:var(--font-head);font-weight:700;font-size:18px;color:var(--m-ink);flex:1;min-width:200px}
.wwsi .s8sh{font-family:var(--font-head);font-weight:600;font-size:13px;color:var(--m-accent);border:1px solid var(--m-panel-b);border-radius:999px;padding:6px 12px}
.wwsi .s8sh::after{content:"Show the activity"}
.wwsi .s8det[open] .s8sh::after{content:"Hide the activity"}
.wwsi .s8det>.s8body{padding:16px 22px 20px;border-top:1px solid var(--m-line)}
.wwsi .s8deep .s8body{font-size:15px;color:var(--m-ink-2)}
.wwsi .s8 a:not([class]){color:var(--m-accent);text-decoration:underline;text-decoration-thickness:1px;text-underline-offset:2px}
.wwsi .s8 a:not([class]):hover{text-decoration-thickness:2px}
.wwsi .s8 u{text-decoration-thickness:1px;text-underline-offset:2px}
.wwsi .nextup{display:grid;grid-template-columns:240px minmax(0,1fr) auto;gap:20px;align-items:center;margin:34px 0 70px;background:var(--m-panel);border:1px solid var(--m-panel-b);border-radius:18px;padding:14px;width:100%;text-align:left;font:inherit;color:var(--m-ink);box-shadow:var(--m-shadow);cursor:pointer}
.wwsi .nextup .thumb{border-radius:11px}
.wwsi .nextup .nu-t,.wwsi .nextup .lbl,.wwsi .nextup .nu-s{display:block;min-width:0}
.wwsi .nextup b{display:block;font-family:var(--f-display);font-weight:700;font-size:22px;margin-top:4px}
.wwsi .nextup .nu-s{font-size:14px;color:var(--m-ink-2);margin-top:4px}

/* ---------- Teaching Guide ---------- */
.wwsi .trh{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;flex-wrap:wrap;padding:14px 0 6px}
.wwsi .trh img{width:230px}
.wwsi .trh h1{font-size:clamp(26px,3vw,36px);margin-top:6px}
.wwsi .trh h1:focus{outline:none}
.wwsi .trh p{color:var(--m-ink-2);font-size:15px;margin-top:6px;max-width:58ch}
.wwsi .gwrap{display:grid;grid-template-columns:240px minmax(0,1fr);gap:28px;align-items:start;margin-top:18px}
.wwsi .gtoc{position:sticky;top:96px;background:var(--m-panel);border:1px solid var(--m-panel-b);border-radius:14px;padding:16px 14px}
.wwsi .gtoc b{display:block;font-family:var(--font-head);font-size:12px;letter-spacing:.08em;text-transform:uppercase;color:var(--m-accent);margin-bottom:8px}
.wwsi .gtoc ol{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:2px}
.wwsi .gtoc button{width:100%;text-align:left;border:0;background:transparent;border-radius:8px;padding:7px 8px;font-family:var(--font-head);font-weight:600;font-size:13.5px;line-height:1.3;color:var(--m-ink-2)}
.wwsi .gtoc button:hover{background:var(--m-chip);color:var(--m-ink)}
.wwsi .gbody{display:flex;flex-direction:column;gap:18px;min-width:0}
.wwsi .gsec{background:var(--m-panel);border:1px solid var(--m-panel-b);border-radius:16px;padding:24px 26px;box-shadow:var(--m-shadow);scroll-margin-top:100px}
.wwsi .gsec h2{font-family:var(--f-display);font-weight:800;font-size:clamp(22px,2.4vw,28px);color:var(--m-ink);margin-bottom:10px}
.wwsi .gsec h2:focus{outline:none}
.wwsi .gbody p{font-size:15.5px;line-height:1.65;color:var(--m-ink);max-width:72ch}
.wwsi .gbody p+p{margin-top:12px}
.wwsi .gbody h3{font-family:var(--font-head);font-weight:700;font-size:17px;color:var(--m-ink);margin:22px 0 6px;clear:both}
.wwsi .gbody a{color:var(--m-accent);font-weight:600}
.wwsi .gul{margin:8px 0 10px;padding-left:22px;list-style:disc;display:flex;flex-direction:column;gap:7px;font-size:15px;line-height:1.55;color:var(--m-ink);max-width:72ch}
.wwsi .gtw{overflow-x:auto;margin:14px 0}
.wwsi .gtab{width:100%;border-collapse:collapse;font-size:14.5px;color:var(--m-ink)}
.wwsi .gtab th,.wwsi .gtab td{text-align:left;vertical-align:top;padding:10px 12px;border-bottom:1px solid var(--m-line)}
.wwsi .gtab thead th{font-family:var(--font-head);font-weight:700;font-size:12.5px;letter-spacing:.04em;text-transform:uppercase;color:var(--m-accent);border-bottom-width:2px}
.wwsi .gtab tbody th{font-family:var(--font-head);font-weight:700;white-space:nowrap;color:var(--m-ink)}
.wwsi .gmap tbody th{text-align:center;width:64px}
.wwsi .gmap .adv-l{display:flex;margin-top:4px}
.wwsi .glink{border:0;background:none;padding:0;font-family:var(--font-head);font-weight:700;font-size:14.5px;color:var(--m-accent);text-align:left;text-decoration:underline;text-underline-offset:3px;cursor:pointer}
.wwsi .gphoto{float:right;width:min(220px,38%);aspect-ratio:4/5;object-fit:cover;border-radius:14px;margin:4px 0 12px 20px}
.wwsi .gtrailer{margin:18px 0;max-width:720px}
.wwsi .gtrailer .player{border-radius:12px}
.wwsi .gtrailer figcaption{font-size:13px;color:var(--m-ink-2);margin-top:8px}
.wwsi .gtrailer figcaption a{color:var(--m-accent);font-weight:600}

/* ---------- help panel (inside the portal's own modal) ---------- */
.wwsi.wwsi-help .checklist{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:10px;font-size:14.5px}
.wwsi.wwsi-help .checklist li{display:flex;gap:10px;align-items:flex-start}
.wwsi.wwsi-help .checklist .ico{color:var(--w-teal);margin-top:4px;width:16px;height:16px}

/* ---------- Present in class (always dark, for the projector) ---------- */
.wwsi.wwsi-present{position:fixed;inset:0;z-index:2000;background:var(--w-ink);color:#fff;display:flex;flex-direction:column;font-family:var(--font-body)}
.wwsi-present .stage{flex:1;position:relative;background-size:cover;background-position:center;display:flex;align-items:center;overflow:hidden}
.wwsi-present .stage::after{content:"";position:absolute;inset:0;background:radial-gradient(120% 90% at 30% 50%,rgba(2,39,75,0),rgba(10,21,38,.55));pointer-events:none}
.wwsi-present .slide{position:relative;z-index:1;padding:0 8vw;max-width:1200px;width:100%;animation:wwsiSIn .9s var(--w-ease)}
@keyframes wwsiSIn{from{opacity:0;transform:translateX(-30px)}to{opacity:1;transform:none}}
.wwsi-present .slide img.sq{height:clamp(70px,9vw,120px);width:auto;margin-bottom:28px;display:block}
.wwsi-present .slide .lbl{color:var(--w-light);font-size:clamp(12px,1.3vw,18px);letter-spacing:.18em}
.wwsi-present .slide h2{color:#fff;font-family:var(--f-display);font-weight:850;font-size:clamp(40px,6.4vw,104px);line-height:1.02;margin:14px 0 0}
.wwsi-present .slide p.st{font-family:var(--f-display);font-weight:700;font-size:clamp(22px,2.6vw,40px);line-height:1.3;max-width:28ch;margin-top:14px}
.wwsi-present .slide .vidph{margin-top:22px;font-size:15px;color:rgba(242,245,247,.75)}
.wwsi-present .slide .vidph a{color:var(--w-light)}
.wwsi-present .pvid{position:relative;width:min(1100px,86vw);aspect-ratio:16/9;margin:14px auto 0;background:#000;border-radius:10px;overflow:hidden}
.wwsi-present .pvid iframe{position:absolute;inset:0;width:100%;height:100%;border:0}
.wwsi-present .pvid.soon img{width:100%;height:100%;object-fit:cover;filter:brightness(.6);display:block}
.wwsi-present .pbar{display:flex;align-items:center;gap:14px;padding:14px 22px;padding-bottom:calc(14px + env(safe-area-inset-bottom,0px));background:rgba(10,21,38,.9);font-size:13px;font-family:var(--font-head);font-weight:600}
.wwsi-present .pbar .dots{display:flex;gap:6px;flex:1;justify-content:center}
.wwsi-present .pbar .dots i{width:8px;height:8px;border-radius:50%;background:rgba(242,245,247,.25)}
.wwsi-present .pbar .dots i.on{background:var(--w-light)}
.wwsi-present .pbar button{border:1px solid rgba(242,245,247,.3);background:transparent;color:#fff;border-radius:999px;padding:7px 14px;font-family:var(--font-head);font-weight:600;font-size:13px;display:inline-flex;gap:6px;align-items:center;cursor:pointer}
.wwsi-present .pbar button:disabled{opacity:.4;cursor:default}
.wwsi-present :focus-visible{outline:2px solid var(--w-light);outline-offset:2px}

/* ---------- the opening: Surfacing, light and dark ---------- */
.wwsi.wwsi-intro{position:fixed;inset:0;z-index:2100;overflow:hidden;cursor:pointer}
.wwsi-intro .i4wrap{position:absolute;inset:0}
.wwsi-intro .i4bg{position:absolute;inset:0;overflow:hidden;background:radial-gradient(120% 90% at 50% 0%,#034866 0%,#02274B 38%,#0A1526 85%)}
.wwsi-intro .i4bg .cau{position:absolute;inset:-12%;background-size:cover;background-position:center;mix-blend-mode:screen;opacity:.5}
.wwsi-intro .rays{position:absolute;inset:0;pointer-events:none}
.wwsi-intro .rays i{position:absolute;top:-15%;height:115%;width:8vw;background:linear-gradient(180deg,rgba(127,212,232,.38),rgba(127,212,232,0) 78%);filter:blur(20px);mix-blend-mode:screen;opacity:0}
.wwsi-intro .rays i:nth-child(1){left:20%}.wwsi-intro .rays i:nth-child(2){left:37%;width:5vw}.wwsi-intro .rays i:nth-child(3){left:56%;width:10vw}.wwsi-intro .rays i:nth-child(4){left:74%;width:4vw}
.wwsi-intro .bub{position:absolute;inset:0;width:100%;height:100%}
.wwsi-intro .cam{position:absolute;inset:0;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:28px}
.wwsi-intro .lg4{width:min(640px,82vw)}
.wwsi-intro .lg4-in{position:relative;width:100%;aspect-ratio:1000/449}
.wwsi-intro .lg4 .lp{position:absolute;display:block;max-width:none}
.wwsi-intro .lshine{position:absolute;inset:0;background:linear-gradient(105deg,transparent 38%,rgba(255,255,255,.9) 50%,transparent 62%);background-size:260% 100%;background-position:130% 0;-webkit-mask-size:100% 100%;mask-size:100% 100%;-webkit-mask-repeat:no-repeat;mask-repeat:no-repeat;mix-blend-mode:screen;opacity:0;pointer-events:none}
.wwsi-intro .i4sub{font-family:var(--font-head);font-weight:500;font-size:13px;letter-spacing:.16em;text-transform:uppercase;color:var(--w-light);opacity:0}
.wwsi-intro .surf{position:absolute;left:0;top:-58px;width:100%;height:60px}
.wwsi-intro .surf path{fill:#034866}
.wwsi-intro .iskip{position:absolute;z-index:3;right:max(20px,env(safe-area-inset-right,0px));bottom:calc(20px + env(safe-area-inset-bottom,0px));border:1px solid rgba(242,245,247,.3);background:rgba(10,21,38,.4);color:#fff;border-radius:999px;padding:7px 14px;font-family:var(--font-head);font-weight:600;font-size:12.5px;cursor:pointer;opacity:0;animation:wwsiFadeIn .3s .6s forwards}
@keyframes wwsiFadeIn{to{opacity:1}}
.wwsi-intro.light .i4bg{background:radial-gradient(120% 95% at 50% -8%,#FFFFFF 0%,#EEF8FB 28%,#C6E9F3 70%,#93D5E9 100%)}
.wwsi-intro.light .i4bg .cau{mix-blend-mode:multiply}
.wwsi-intro.light .rays i{background:linear-gradient(180deg,rgba(255,255,255,.95),rgba(255,255,255,0) 78%);mix-blend-mode:normal;filter:blur(16px)}
.wwsi-intro.light .i4sub{color:#0B6882}
.wwsi-intro.light .surf path{fill:#FFFFFF}
.wwsi-intro.light .iskip{background:rgba(255,255,255,.75);color:#0A1526;border-color:#C9D5DC}
.wwsi-intro.light .lshine{background:linear-gradient(105deg,transparent 38%,rgba(255,255,255,.75) 50%,transparent 62%);background-size:260% 100%;background-position:130% 0}

/* ---------- motion preferences ---------- */
@media (prefers-reduced-motion:reduce){
  .wwsi .waves svg{animation:none!important}
  .wwsi .dltip,.wwsi .wbtn,.wwsi .tile2 .thumb,.wwsi .thumb .play,.wwsi .player .pbtn span{transition:none!important}
  .wwsi .wbtn:hover,.wwsi .tile2:hover .thumb{transform:none}
  .wwsi .rail2{scroll-behavior:auto}
  .wwsi-view.wwsi-enter .dw,.wwsi-present .slide{animation:none}
  .wwsi-intro .iskip{animation:none;opacity:1}
}

/* ---------- narrower screens ---------- */
@media (max-width:1100px){
  .wwsi .hero2{grid-template-columns:minmax(0,1fr);min-height:0}
  .wwsi .hero2 .l{padding-bottom:0}
  .wwsi .hero2 .pres{max-width:560px;justify-self:center;margin-bottom:30px}
}
@media (max-width:980px){
  .wwsi .gwrap{grid-template-columns:minmax(0,1fr)}
  .wwsi .gtoc{position:static}
  .wwsi .gtoc ol{flex-direction:row;flex-wrap:wrap}
  .wwsi .gtoc button{width:auto}
}
@media (max-width:760px){
  .wwsi .wband .in{grid-template-columns:minmax(0,1fr);justify-items:center}
  .wwsi .wband .l{display:none}
  .wwsi .wband .r{justify-content:center}
  .wwsi .wsnav button{padding:8px 13px;font-size:13px}
  .wwsi .appbar .wwsi-mt{font-size:14px}
  .wwsi .upnext2{grid-template-columns:110px minmax(0,1fr)}
  .wwsi .upnext2 .go{display:none}
  .wwsi .nextup{grid-template-columns:minmax(0,1fr)}
  .wwsi .row2-h .arr{display:none}
  .wwsi .row2-h .bp{margin-left:0;flex-basis:100%}
  .wwsi .waves{height:120px}
  .wwsi .s8out{grid-template-columns:minmax(0,1fr)}
  .wwsi .s8talk,.wwsi .s8extra{padding:18px}
  .wwsi .s8qs>li{padding-left:40px}
  .wwsi .s8mark{margin-left:0}
  .wwsi .wbtn{white-space:normal;text-align:center}
}
@media (max-width:560px){
  .wwsi .gsec{padding:18px 16px}
  .wwsi .gphoto{float:none;display:block;width:200px;margin:4px 0 12px}
  .wwsi .vrow .dlbtn,.wwsi .dlwrap{margin-left:0}
  .wwsi .rail2{grid-auto-columns:minmax(220px,78vw)}
  .wwsi-present .pbar{gap:8px;padding-left:12px;padding-right:12px}
}

/* ---------- printing the Teaching Guide (only while the module is the page on screen) ---------- */
@media print{
  .wwsi-view .appbar,.wwsi-view .wband,.wwsi-view .gtoc,.wwsi-view .trh .fl,.wwsi-view .waves,.wwsi-view .sbar,.wwsi-view .nextup,.wwsi-view .s8acts,.wwsi-view .s8mark,.wwsi-view .vrow{display:none!important}
  .wwsi-view,.wwsi-view .dw{--m-ink:#0A1526;--m-ink-2:rgba(10,21,38,.8);--m-panel:#fff;--m-accent:#0B6882;--m-line:#DCE3E8;background:#fff!important;color:#0A1526;min-height:0!important;overflow:visible!important}
  .wwsi-view .dw::before,.wwsi-view .dw::after{display:none!important}
  .wwsi-view .gwrap{display:block}
  .wwsi-view .gsec{box-shadow:none;border:0;padding:0 0 18px;break-inside:auto}
  .wwsi-view .gsec h2{break-after:avoid}
  .wwsi-view .gtab tr{break-inside:avoid}
  .wwsi-view .s8det>.s8body{display:block}
}