/* CUASA website styles. Colours and fonts are set once in :root below. */

:root{--bg:#f4f9fc;--card:#fff;--ink:#12212c;--mute:#4f6372;--green:#0a7ea0;--gold:#b8901c;--line:#cde4f2;--on-green:#fff;
box-sizing:border-box;padding-top:env(safe-area-inset-top,0px);padding-bottom:env(safe-area-inset-bottom,0px)}
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]){--bg:#0b1620;--card:#12222f;--ink:#e8f1f7;--mute:#9bb4c5;--green:#0e5a8a;--gold:#e0b84a;--line:#25465c;--on-green:#fff}}
:root[data-theme="dark"]{--bg:#0b1620;--card:#12222f;--ink:#e8f1f7;--mute:#9bb4c5;--green:#0e5a8a;--gold:#e0b84a;--line:#25465c;--on-green:#fff}
*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:calc(70px + env(safe-area-inset-top,0px))}
body{margin:0;background:var(--bg);color:var(--ink);font:400 1.05rem/1.65 "Instrument Sans",system-ui,sans-serif}
h1,h2,h3{font-family:Newsreader,Georgia,serif;line-height:1.15;margin:0 0 .5em}
h1{font-size:clamp(2.2rem,5.5vw,3.8rem);font-weight:700}h2{font-size:clamp(1.7rem,3.5vw,2.4rem)}h3{font-size:1.25rem}
p{margin:0 0 1em;max-width:62ch}a{color:inherit}
.wrap{max-width:1080px;margin:0 auto;padding:0 20px}
section{padding:72px 0}
nav{position:sticky;top:0;z-index:5;background:var(--bg);border-bottom:1px solid var(--line);padding-top:env(safe-area-inset-top,0px)}
nav .wrap{display:flex;align-items:center;justify-content:space-between;height:60px;gap:12px}
.logo{font:700 1.4rem Newsreader,serif;text-decoration:none;letter-spacing:.02em}
.links{display:flex;gap:16px;font-size:.93rem}.links a{text-decoration:none;color:var(--mute);white-space:nowrap}.links a:hover{color:var(--ink)}
.btn{display:inline-block;padding:12px 22px;border-radius:6px;font-weight:600;text-decoration:none;border:2px solid var(--green);background:var(--green);color:var(--on-green);cursor:pointer;font-family:inherit;font-size:1rem}
.btn.alt{background:transparent;color:var(--ink);border-color:var(--ink)}
.btn:focus-visible,a:focus-visible,input:focus-visible,textarea:focus-visible,select:focus-visible{outline:3px solid var(--gold);outline-offset:2px}
.hero{padding:64px 0 72px;background:linear-gradient(var(--line) 1px,transparent 1px) 0 0/100% 34px}
.hero .wrap{display:grid;grid-template-columns:1.2fr 1fr;gap:40px;align-items:center}
.hero .btns{display:flex;gap:12px;flex-wrap:wrap;margin-top:8px}
.t{background:var(--card);border:2px solid var(--ink);padding:0}
.t h3,.t .th{text-align:center;margin:0;padding:10px;border-bottom:2px solid var(--ink);font-size:1rem}
.t .cols{display:grid;grid-template-columns:1fr 1fr}.t .cols div{padding:18px 14px;font:700 1.4rem/1.6 Newsreader,serif}
.t .cols div:first-child{border-right:2px solid var(--ink)}
.t .tot{border-top:2px solid var(--ink);padding:8px;text-align:center;color:var(--gold);font-weight:600;font-size:.9rem}
.pillars,.res,.people{display:grid;grid-template-columns:repeat(auto-fit,minmax(230px,1fr));gap:18px}
.pillars div{border-left:4px solid var(--gold);padding:4px 0 4px 16px}
.pillars p{color:var(--mute);margin:0}
.band{background:var(--green);color:var(--on-green)}.band p{color:inherit}
.card{background:var(--card);border:1px solid var(--line);border-radius:8px;padding:22px;display:flex;flex-direction:column;gap:6px}
.card p{color:var(--mute);margin:0 0 8px}.card .btn{margin-top:auto;align-self:flex-start;padding:9px 16px;font-size:.95rem}
.card ul{margin:0 0 10px;padding-left:18px;color:var(--mute)}
.note{font-size:.88rem;color:var(--mute);border-left:3px solid var(--line);padding-left:12px;margin-top:14px}
.term{background:var(--card);border:1px solid var(--line);border-radius:8px;padding:24px;max-width:640px}
.term b{color:var(--gold)}
.person{background:var(--card);border:1px solid var(--line);border-radius:8px;padding:18px}
.ph{width:100%;aspect-ratio:1;object-fit:cover;border-radius:6px;margin-bottom:12px;display:block}.person small{display:block;color:var(--gold);font-weight:600}.person p{color:var(--mute);font-size:.92rem;margin:6px 0 0}
.tbd{opacity:.7;border-style:dashed}
.two{display:grid;grid-template-columns:1fr 1fr;gap:40px}
form{display:grid;gap:12px}
input,textarea,select{width:100%;padding:11px 12px;border:1px solid var(--line);border-radius:6px;background:var(--card);color:var(--ink);font:inherit}
label{font-size:.9rem;font-weight:600;display:grid;gap:4px}
#msg{font-weight:600;color:var(--gold);min-height:1.5em}
.cols3{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:18px}
footer{background:var(--green);color:var(--on-green);padding:48px 0 32px;font-size:.95rem}
footer .wrap{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:28px}
footer a{display:block;text-decoration:none;opacity:.85;margin:3px 0}footer a:hover{opacity:1}footer h3{font-size:1rem}
footer p{max-width:none}.copy{grid-column:1/-1;border-top:1px solid rgba(255,255,255,.25);padding-top:16px;margin:0;opacity:.8}
.feat{display:grid;grid-template-columns:200px 1fr;gap:24px;align-items:center;background:var(--card);border:1px solid var(--line);border-left:4px solid var(--gold);border-radius:8px;padding:20px;margin-top:36px}.feat img{width:100%;aspect-ratio:1;object-fit:cover;border-radius:6px;display:block}.feat small{color:var(--gold);font-weight:600;display:block}.feat h3{margin:0 0 6px}.feat p{margin:0 0 8px;color:var(--mute)}
@media(max-width:760px){.feat{grid-template-columns:1fr}.hero .wrap,.two,footer .wrap{grid-template-columns:1fr}section{padding:52px 0}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}}

/* ---------- Navigation (multi-page) ---------- */
.logo{display:flex;align-items:center;gap:10px}
.logo img{width:40px;height:40px;border-radius:50%;display:block}
.navr{display:flex;align-items:center;gap:10px}
.links a[aria-current="page"]{color:var(--ink);font-weight:600;border-bottom:2px solid var(--gold)}
.menu-btn{display:none;background:transparent;color:var(--ink);border:1px solid var(--line);border-radius:6px;font-size:1.3rem;line-height:1;padding:7px 11px;cursor:pointer}
.skip{position:absolute;left:-999px;top:0;background:var(--gold);color:#12212c;padding:8px 14px;z-index:10}
.skip:focus{left:8px;top:8px}
@media(max-width:1100px){
  .menu-btn{display:block}
  .links{display:none;position:absolute;top:calc(60px + env(safe-area-inset-top,0px));left:0;right:0;flex-direction:column;gap:0;background:var(--bg);border-bottom:1px solid var(--line);padding:6px 20px 14px}
  .links.open{display:flex}
  .links a{padding:12px 0;border-bottom:1px solid var(--line);font-size:1rem}
  .links a[aria-current="page"]{border-bottom:1px solid var(--line);color:var(--gold)}
}

/* ---------- Inner page header ---------- */
.page-head{padding:56px 0 44px;background:linear-gradient(var(--line) 1px,transparent 1px) 0 0/100% 34px;border-bottom:1px solid var(--line)}
.page-head h1,.page-head h2{font-size:clamp(2rem,4.6vw,3rem);margin-bottom:.3em}
.page-head p{color:var(--mute);margin:0}
.crumb{font-size:.9rem;color:var(--mute);margin-bottom:10px}.crumb a{color:var(--mute)}
.alt-bg{background:var(--card)}
.stack>*+*{margin-top:18px}

/* ---------- Home page link cards ---------- */
.linkcard{text-decoration:none;color:inherit;transition:transform .15s,border-color .15s}
.linkcard:hover{transform:translateY(-2px);border-color:var(--gold)}
.linkcard h3{margin:0}
.linkcard .go{margin-top:auto;color:var(--gold);font-weight:600}

/* ---------- Resource lists (admin-managed) ---------- */
.filters{display:grid;grid-template-columns:2fr 1fr 1fr;gap:12px;margin-bottom:14px}
.filters:empty{display:none}
[data-role="count"]{color:var(--mute);font-size:.92rem;margin:0 0 16px}
.rcard .meta{display:flex;flex-wrap:wrap;gap:6px;margin-bottom:4px}
.badge{display:inline-block;font-size:.78rem;font-weight:600;padding:2px 9px;border-radius:99px;border:1px solid var(--line);color:var(--mute)}
.badge.gold{border-color:var(--gold);color:var(--gold)}
.rcard .actions{display:flex;flex-wrap:wrap;gap:8px;margin-top:auto}
.rcard .actions .btn{margin-top:0}
.rcard .thumb{width:100%;aspect-ratio:16/9;object-fit:cover;border-radius:6px;display:block;margin-bottom:8px;background:var(--line)}
.empty{background:var(--card);border:1px dashed var(--line);border-radius:8px;padding:28px;color:var(--mute);grid-column:1/-1}
.news-item{background:var(--card);border:1px solid var(--line);border-left:4px solid var(--gold);border-radius:8px;padding:20px 22px}
.news-item small{color:var(--gold);font-weight:600}
.news-item h3{margin:4px 0 8px}.news-item p{color:var(--mute);margin:0 0 10px;white-space:pre-line}
.news-list{display:grid;gap:16px}
@media(max-width:760px){.filters{grid-template-columns:1fr}}
.logo:focus-visible,.links a:focus-visible,.menu-btn:focus-visible{outline:3px solid var(--gold);outline-offset:2px}

/* ---------- One-file site: each page is a "view"; only the active one shows ---------- */
.view{display:none}
.view.active{display:block}
main:focus{outline:none}

/* ---------- AI Study Helper ---------- */
.tutor{background:var(--card);border:1px solid var(--line);border-radius:8px;padding:22px}
.tutor h2{margin-bottom:.3em}
.tutor-top{display:grid;grid-template-columns:2fr 1fr;gap:12px;margin:8px 0 12px}
.tutor-chips{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:12px}
.tutor-chips .btn{padding:9px 16px;font-size:.95rem}
.tutor-log{border:1px solid var(--line);border-radius:8px;background:var(--bg);padding:14px;max-height:520px;min-height:140px;overflow-y:auto;display:grid;gap:10px;margin-bottom:14px}
.tmsg{padding:10px 14px;border-radius:10px;max-width:92%;white-space:pre-wrap;overflow-wrap:anywhere;line-height:1.55}
.tmsg.bot{background:var(--card);border:1px solid var(--line);justify-self:start}
.tmsg.me{background:var(--green);color:var(--on-green);justify-self:end}
.tmsg.err{border-color:#b3261e;color:#b3261e}
.tmsg.wait{color:var(--mute);font-style:italic}
@media(max-width:760px){.tutor-top{grid-template-columns:1fr}.tmsg{max-width:100%}}
.tmsg.ok{border-color:var(--green);border-width:2px}
.tmsg.bad{border-color:#b3261e;border-width:2px}
.tmsg.part{border-color:var(--gold);border-width:2px}
#tu-quizbar[hidden]{display:none !important}

/* ---------- Member log in / sign up ---------- */
.authbox{max-width:460px;margin:0 auto;background:var(--card);border:1px solid var(--line);border-radius:8px;padding:24px}
.authbox [hidden]{display:none !important}
.authbox h2,.authbox h3{margin:0 0 .4em}
.tabs{display:grid;grid-template-columns:1fr 1fr;gap:4px;background:var(--bg);border:1px solid var(--line);border-radius:8px;padding:4px;margin-bottom:20px}
.tabs button{font:inherit;font-weight:600;padding:10px;border:0;border-radius:6px;background:transparent;color:var(--mute);cursor:pointer}
.tabs button[aria-selected="true"]{background:var(--green);color:var(--on-green)}
.tabs button:focus-visible,.pw button:focus-visible,.linkbtn:focus-visible{outline:3px solid var(--gold);outline-offset:2px}
.pw{position:relative;display:block}.pw input{padding-right:74px}
.pw button{position:absolute;right:6px;top:50%;transform:translateY(-50%);border:0;background:transparent;color:var(--green);font:inherit;font-size:.85rem;font-weight:600;padding:6px 8px;cursor:pointer}
.hint{font-size:.85rem;color:var(--mute);font-weight:400}
.linkbtn{background:none;border:0;padding:0;font:inherit;font-size:.92rem;color:var(--green);text-decoration:underline;cursor:pointer}
.authbox .note.bad{border-left-color:#b3261e;color:#b3261e}
.authbox .note.good{border-left-color:var(--green);color:var(--ink)}
.authbox details{margin:18px 0 6px;border-top:1px solid var(--line);padding-top:14px}.authbox summary{cursor:pointer;font-weight:600}
.authbox details form{margin-top:12px}

/* ---------- Home: call-to-action note, proof strip, latest news ---------- */
.cta-note{margin:14px 0 0;font-size:.93rem;color:var(--mute)}
.proof{padding:0;background:var(--card);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.proof ul{list-style:none;margin:0;padding:22px 0;display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:18px}
.proof li{display:flex;gap:14px;align-items:center;color:var(--mute);font-size:.95rem;line-height:1.4}
.proof li[hidden]{display:none}
.proof b{font:700 2.1rem/1 Newsreader,Georgia,serif;color:var(--gold);min-width:1.4ch;text-align:center}
#latest{padding:56px 0 24px}#latest[hidden]{display:none}