/* Magellan Academy — shared theme. Per-school overrides live in index.html :root */
:root{
  --primary:#3b5bdb; --primary-d:#2b3ea8; --accent:#f59f00; --accent2:#22b8cf;
  --ink:#151a2d; --ink2:#5a627a; --bg:#f4f6fb; --card:#ffffff; --line:#e4e8f2;
  --good:#2f9e44; --bad:#e03131; --radius:18px; --shadow:0 10px 30px rgba(20,26,45,.08);
  --font:"Inter",system-ui,-apple-system,Segoe UI,Roboto,Helvetica,Arial,sans-serif;
  --display:var(--font); --maxw:1080px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--ink);font-family:var(--font);line-height:1.6;-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none}
h1,h2,h3{font-family:var(--display);line-height:1.15;margin:0 0 .4em}
code{background:rgba(0,0,0,.06);padding:.1em .4em;border-radius:6px;font-size:.92em}

/* header */
.topbar{position:sticky;top:0;z-index:40;display:flex;align-items:center;gap:1.2rem;
  padding:.7rem clamp(1rem,4vw,2rem);background:rgba(255,255,255,.85);backdrop-filter:blur(12px);border-bottom:1px solid var(--line)}
.brand{display:flex;align-items:center;gap:.55rem;font-weight:800;font-family:var(--display);font-size:1.12rem}
.brand .logo{font-size:1.5rem}
.mainnav{display:flex;gap:.3rem;margin-left:.5rem}
.mainnav a{padding:.45rem .8rem;border-radius:10px;font-weight:600;color:var(--ink2);font-size:.95rem}
.mainnav a:hover{background:var(--bg);color:var(--ink)}
.hstats{margin-left:auto;display:flex;gap:.4rem}
.chip{background:var(--bg);border:1px solid var(--line);border-radius:20px;padding:.3rem .7rem;font-size:.82rem;font-weight:700;white-space:nowrap}
.menub{display:none;margin-left:auto;background:none;border:0;font-size:1.5rem;cursor:pointer}
.wrap{max-width:var(--maxw);margin:0 auto;padding:clamp(1.2rem,4vw,2.4rem) clamp(1rem,4vw,2rem) 4rem;min-height:60vh}
.wrap.fade{animation:fade .4s ease}
@keyframes fade{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:none}}

/* buttons */
.btn{display:inline-flex;align-items:center;gap:.4rem;border:1px solid var(--line);background:var(--card);color:var(--ink);
  padding:.7rem 1.15rem;border-radius:12px;font-weight:700;font-size:.96rem;cursor:pointer;transition:.15s;font-family:var(--font)}
.btn:hover{transform:translateY(-1px);box-shadow:var(--shadow)}
.btn.primary{background:linear-gradient(135deg,var(--primary),var(--primary-d));color:#fff;border-color:transparent}
.btn.ghost{background:transparent}
.btn.small{padding:.5rem .8rem;font-size:.86rem;border-radius:10px}
.btn.big-btn{padding:.9rem 2rem;font-size:1.1rem}

/* hero */
.hero{background:linear-gradient(135deg,var(--primary),var(--primary-d));color:#fff;border-radius:26px;padding:clamp(1.5rem,4vw,3rem);margin-bottom:2rem;box-shadow:var(--shadow);position:relative;overflow:hidden}
.hero::after{content:"";position:absolute;right:-60px;top:-60px;width:280px;height:280px;background:radial-gradient(circle,rgba(255,255,255,.18),transparent 70%)}
.hero-in{display:grid;grid-template-columns:1.4fr 1fr;gap:2rem;align-items:center;position:relative;z-index:1}
.eyebrow{text-transform:uppercase;letter-spacing:.12em;font-size:.78rem;font-weight:700;opacity:.85;margin:0 0 .5rem}
.hero h1{font-size:clamp(1.8rem,4vw,2.9rem);margin-bottom:.5rem}
.hero .lead{font-size:1.08rem;opacity:.94;margin-bottom:1.3rem;max-width:34ch}
.hero-cta{display:flex;gap:.7rem;flex-wrap:wrap}
.hero .btn.ghost{color:#fff;border-color:rgba(255,255,255,.5)}
.hero-card{background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.25);border-radius:20px;padding:1.4rem;backdrop-filter:blur(6px)}
.ring{--p:0;width:130px;height:130px;border-radius:50%;margin:0 auto .9rem;display:grid;place-items:center;
  background:conic-gradient(var(--accent) calc(var(--p)*1%),rgba(255,255,255,.22) 0)}
.ring-in{width:100px;height:100px;border-radius:50%;background:var(--primary-d);display:grid;place-items:center;text-align:center;color:#fff}
.ring-in b{font-size:1.4rem;display:block;line-height:1}.ring-in span{font-size:.7rem;opacity:.85}
.hc-stats{display:flex;justify-content:space-between;text-align:center;color:#fff;margin-bottom:.8rem}
.hc-stats b{font-size:1.3rem;display:block}.hc-stats span{font-size:.72rem;opacity:.85}
.xpbar{height:8px;background:rgba(255,255,255,.25);border-radius:8px;overflow:hidden}
.xpbar>div{height:100%;background:var(--accent);border-radius:8px;transition:width .5s}
.xpnote{font-size:.78rem;opacity:.85;margin:.5rem 0 0;text-align:center}

/* section heads */
.sec-head{display:flex;align-items:baseline;justify-content:space-between;margin:2rem 0 1rem}
.sec-head h2{font-size:1.5rem;margin:0}
.seeall{color:var(--primary);font-weight:700;font-size:.9rem}
.page-head{margin-bottom:1.4rem}
.page-head h1{font-size:clamp(1.6rem,4vw,2.4rem)}
.page-head p{color:var(--ink2);margin:.2rem 0 0}

/* subject cards */
.subj-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:1.1rem}
.subj-card{--sc:var(--primary);background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:1.3rem;display:block;transition:.18s;position:relative;overflow:hidden}
.subj-card::before{content:"";position:absolute;left:0;top:0;bottom:0;width:5px;background:var(--sc)}
.subj-card:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:var(--sc)}
.sc-ico{font-size:2.1rem;margin-bottom:.5rem}
.subj-card h3{font-size:1.16rem;margin-bottom:.3rem}
.subj-card p{color:var(--ink2);font-size:.9rem;margin:0 0 .9rem;min-height:2.4em}
.sc-foot{font-size:.78rem;color:var(--ink2);font-weight:600;margin-bottom:.6rem}
.mbar{height:7px;background:var(--bg);border:1px solid var(--line);border-radius:6px;overflow:hidden}
.mbar>div{height:100%;background:var(--sc);transition:width .5s}
.mbar.big{height:10px;margin:.6rem 0 .3rem}

/* band strip */
.band{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:1rem;margin:2rem 0}
.band-i{display:flex;align-items:center;gap:.9rem;background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:1.1rem}
.band-i.wide{grid-column:1/-1}
.band-i .bi{font-size:1.8rem}
.band-i b{display:block}.band-i p{margin:.15rem 0 0;color:var(--ink2);font-size:.86rem}
.band-i .btn{margin-left:auto}

/* subject page */
.subj-hero{--sc:var(--primary);background:var(--card);border:1px solid var(--line);border-left:6px solid var(--sc);border-radius:var(--radius);padding:1.5rem;margin-bottom:1.4rem}
.back{color:var(--ink2);font-weight:600;font-size:.9rem;display:inline-block;margin-bottom:.7rem}
.back:hover{color:var(--primary)}
.sh-row{display:flex;gap:1.1rem;align-items:flex-start}
.sh-ico{font-size:3rem}
.subj-hero h1{font-size:1.9rem;margin-bottom:.2rem}
.subj-hero p{color:var(--ink2);margin:0 0 .3rem;max-width:60ch}
.msub{font-size:.8rem;color:var(--ink2);font-weight:600}
.sh-cta{margin-top:1rem}
.unit-list{display:flex;flex-direction:column;gap:.7rem}
.unit{display:flex;gap:1rem;align-items:center;background:var(--card);border:1px solid var(--line);border-radius:14px;padding:1rem 1.1rem}
.u-n{width:34px;height:34px;flex:none;border-radius:50%;background:var(--bg);border:1px solid var(--line);display:grid;place-items:center;font-weight:800;color:var(--primary)}
.u-main{flex:1;min-width:0}
.u-main h3{font-size:1.05rem;margin:0 0 .15rem}
.u-main p{margin:0;color:var(--ink2);font-size:.88rem}
.u-tags{display:flex;gap:.4rem;margin-top:.4rem}
.tag{font-size:.72rem;background:var(--bg);border:1px solid var(--line);border-radius:20px;padding:.15rem .55rem;color:var(--ink2);font-weight:600}
.tag.ok{color:var(--good);border-color:var(--good)}
.u-act{display:flex;gap:.4rem;flex:none}

/* lesson */
.lesson{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:clamp(1.3rem,4vw,2.6rem);max-width:760px;margin:0 auto}
.kicker{display:block;font-weight:700;font-size:.85rem;margin:.4rem 0}
.lesson h1{font-size:clamp(1.6rem,4vw,2.3rem);margin-bottom:.6rem}
.lesson .lead{font-size:1.12rem;color:var(--ink2);margin-bottom:1.4rem}
.lesson h2{font-size:1.3rem;margin:1.6rem 0 .5rem}
.lesson p{margin:0 0 1rem}
.lesson ul{margin:0 0 1rem;padding-left:1.2rem}.lesson li{margin:.25rem 0}
.callout{background:var(--bg);border-left:4px solid var(--accent);border-radius:10px;padding:.9rem 1.1rem;margin:1rem 0;font-size:.95rem}
.terms{display:grid;gap:.6rem;margin:.5rem 0 1rem}
.term{background:var(--bg);border:1px solid var(--line);border-radius:12px;padding:.8rem 1rem}
.term b{color:var(--primary)}.term span{display:block;color:var(--ink2);font-size:.9rem;margin-top:.15rem}
.takeaway{background:linear-gradient(135deg,var(--primary),var(--primary-d));color:#fff;border-radius:16px;padding:1.2rem 1.4rem;margin:1.6rem 0}
.takeaway h3{margin:0 0 .5rem;color:#fff}.takeaway ul{padding-left:1.1rem;margin:0}.takeaway li{margin:.3rem 0}
.lesson-cta{display:flex;gap:.7rem;flex-wrap:wrap;margin-top:1.6rem}

/* quiz */
.quiz{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:clamp(1.2rem,4vw,2.2rem);max-width:720px;margin:0 auto}
.q-top{display:flex;align-items:center;gap:.8rem;margin-bottom:1.2rem}
.q-prog{flex:1;height:7px;background:var(--bg);border-radius:6px;overflow:hidden}
.q-prog>div{height:100%;background:var(--primary);transition:width .3s}
.q-count{font-size:.82rem;font-weight:700;color:var(--ink2)}
.q-subj{font-size:.82rem;font-weight:700;margin:0 0 .4rem}
.q-text{font-size:1.3rem;line-height:1.4;margin:0 0 1.2rem}
.opts{display:flex;flex-direction:column;gap:.6rem}
.opt{display:flex;align-items:center;gap:.7rem;text-align:left;width:100%;background:var(--card);border:2px solid var(--line);border-radius:12px;padding:.85rem 1rem;font-size:1rem;cursor:pointer;transition:.14s;font-family:var(--font);color:var(--ink)}
.opt:hover:not(:disabled){border-color:var(--primary);background:var(--bg)}
.opt .ok{width:26px;height:26px;flex:none;border-radius:7px;background:var(--bg);border:1px solid var(--line);display:grid;place-items:center;font-weight:800;font-size:.85rem}
.opt.correct{border-color:var(--good);background:rgba(47,158,68,.1)}
.opt.correct .ok{background:var(--good);color:#fff;border-color:var(--good)}
.opt.wrong{border-color:var(--bad);background:rgba(224,49,49,.08)}
.opt.wrong .ok{background:var(--bad);color:#fff;border-color:var(--bad)}
.opt:disabled{cursor:default}
.q-feed{max-height:0;overflow:hidden;transition:.3s;opacity:0}
.q-feed.show{max-height:600px;opacity:1;margin-top:1.1rem;padding:1rem 1.1rem;border-radius:12px}
.q-feed.good{background:rgba(47,158,68,.09);border:1px solid var(--good)}
.q-feed.bad{background:rgba(224,49,49,.07);border:1px solid var(--bad)}
.q-feed b{font-size:1.02rem}.q-feed p{margin:.5rem 0 .9rem;font-size:.94rem;color:var(--ink)}
.q-feed .next{margin-top:.2rem}

/* result */
.result{text-align:center;padding:1rem}
.res-ring{--p:0;width:150px;height:150px;border-radius:50%;margin:0 auto 1.2rem;display:grid;place-items:center;background:conic-gradient(var(--good) calc(var(--p)*1%),var(--line) 0)}
.res-in{width:118px;height:118px;border-radius:50%;background:var(--card);display:grid;place-items:center}
.res-in b{font-size:2rem;line-height:1}.res-in span{font-size:.85rem;color:var(--ink2)}
.result h2{font-size:1.6rem}
.res-xp{color:var(--accent);font-weight:700}
.res-cta{display:flex;gap:.6rem;justify-content:center;flex-wrap:wrap;margin-top:1.2rem}

/* practice picker */
.pick-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(160px,1fr));gap:.9rem;margin-top:1rem}
.pick{--sc:var(--primary);background:var(--card);border:1px solid var(--line);border-top:4px solid var(--sc);border-radius:14px;padding:1.1rem;text-align:center;transition:.16s}
.pick:hover{transform:translateY(-3px);box-shadow:var(--shadow)}
.p-ico{font-size:1.9rem;display:block;margin-bottom:.4rem}
.pick b{display:block;font-size:.98rem}
.p-sub{font-size:.76rem;color:var(--ink2)}

/* arena */
.arena{max-width:720px;margin:0 auto}
.arena-head{text-align:center;margin-bottom:1.4rem}
.arena-head h1{font-size:2rem}.arena-head p{color:var(--ink2);max-width:46ch;margin:.3rem auto 0}
.arena-stage{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:clamp(1.3rem,4vw,2.2rem);min-height:340px;display:flex;flex-direction:column;justify-content:center}
.arena-start{text-align:center}
.arena-start .big{font-size:2rem;font-weight:800;margin:0 0 .3rem}
.arena-start p{color:var(--ink2)}
.arena-start .hi,.arena-start .newhi{margin-top:1rem;font-weight:700}
.newhi{color:var(--accent)}
.a-final{font-size:1.5rem;margin:.5rem 0}.a-final b{color:var(--primary)}
.a-hud{display:flex;align-items:center;gap:.8rem;margin-bottom:.3rem}
.a-score{font-size:.9rem}.a-score b{font-size:1.2rem;color:var(--primary)}
.a-time{flex:1;height:10px;background:var(--bg);border-radius:6px;overflow:hidden}
.a-time>div{height:100%;background:linear-gradient(90deg,var(--accent),var(--bad));transition:width 1s linear}
.a-tnum{font-weight:800;width:2ch;text-align:right}
.a-streak{height:1.3em;color:var(--accent);font-weight:700;margin:.2rem 0 .6rem;text-align:center}

/* badges */
.badge-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(160px,1fr));gap:.9rem;margin-bottom:2rem}
.badge{background:var(--card);border:1px solid var(--line);border-radius:16px;padding:1.2rem 1rem;text-align:center;opacity:.55;filter:grayscale(.6)}
.badge.on{opacity:1;filter:none;border-color:var(--accent)}
.b-ico{font-size:2.4rem}.badge b{display:block;margin:.4rem 0 .1rem}
.badge span{font-size:.78rem;color:var(--ink2);display:block}
.b-date{color:var(--good)!important;font-weight:700;margin-top:.3rem}
.b-lock{margin-top:.3rem}
.mastery-panel{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:1.4rem;margin-bottom:1.5rem}
.mastery-panel h2{font-size:1.3rem;margin-bottom:.9rem}
.m-row{display:flex;align-items:center;gap:.8rem;margin:.55rem 0}
.m-name{width:34%;font-weight:600;font-size:.92rem}
.m-row .mbar{flex:1}.m-pct{width:3ch;text-align:right;font-weight:700;font-size:.85rem}
.reset{text-align:center}

/* video facade (click-to-load) */
.vwrap{margin:1.2rem 0}
.vfacade{display:block;width:100%;aspect-ratio:16/9;border:0;border-radius:14px;background-size:cover;background-position:center;background-color:#000;cursor:pointer;position:relative;overflow:hidden}
.vfacade::after{content:"";position:absolute;inset:0;background:rgba(0,0,0,.15);transition:.2s}
.vfacade:hover::after{background:rgba(0,0,0,.02)}
.vplay{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);width:66px;height:66px;border-radius:50%;background:rgba(0,0,0,.65);color:#fff;display:grid;place-items:center;font-size:1.6rem;padding-left:4px;z-index:1;transition:.18s}
.vfacade:hover .vplay{background:var(--primary);transform:translate(-50%,-50%) scale(1.08)}
.vframe{width:100%;aspect-ratio:16/9;border:0;border-radius:14px;display:block}
.vattr{font-size:.76rem;color:var(--ink2);margin:.4rem 0 0}

/* toast */
.toast{position:fixed;right:1.2rem;bottom:1.2rem;background:var(--ink);color:#fff;border-radius:14px;padding:.9rem 1.1rem;display:flex;align-items:center;gap:.7rem;box-shadow:0 12px 30px rgba(0,0,0,.25);transform:translateY(120%);transition:.4s;z-index:100;max-width:300px}
.toast.show{transform:none}
.toast .ti{font-size:1.8rem}
.toast b{font-size:.9rem}

/* footer */
.foot{max-width:var(--maxw);margin:0 auto;padding:2rem clamp(1rem,4vw,2rem);border-top:1px solid var(--line);color:var(--ink2);font-size:.86rem}
.foot .fmuted{margin-top:.3rem;opacity:.8}

@media(max-width:820px){
  .mainnav{position:fixed;inset:56px 0 auto 0;flex-direction:column;background:var(--card);border-bottom:1px solid var(--line);padding:.5rem;display:none}
  body.navopen .mainnav{display:flex}
  .menub{display:block}.hstats{margin-left:0}
  .menub{order:3}
  .hero-in{grid-template-columns:1fr}
  .sh-row{flex-direction:column}
  .u-act{flex-direction:column}
  .m-name{width:40%}
}


/* ---- video playlist strip (click-to-load, nocookie) ---- */
.vplaylist{margin:1.5rem 0}
.vpl-head{display:flex;align-items:center;justify-content:space-between;gap:1rem;flex-wrap:wrap;margin:0 0 .8rem}
.vpl-head h2{margin:0;font-size:1.15rem}
.vpl-count{color:var(--ink2);font-weight:400;font-size:.9rem}
.vpl-all{display:inline-flex;align-items:center;gap:.35rem;background:var(--primary);color:#fff;text-decoration:none;padding:.5rem .95rem;border-radius:999px;font-size:.85rem;font-weight:600;white-space:nowrap}
.vpl-all:hover{filter:brightness(1.08)}
.vlist{display:grid;grid-template-columns:repeat(auto-fill,minmax(165px,1fr));gap:.9rem}
.vcard{margin:0}
.vcard .vfacade{border-radius:10px}
.vcard .vframe{border-radius:10px}
.vcard .vplay{width:44px;height:44px;font-size:1.05rem}
.vcap{font-size:.78rem;line-height:1.3;margin:.4rem 0 0}
.vcap b{font-weight:600;color:var(--ink);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.vcap span{display:block;color:var(--ink2);margin-top:2px}


/* ---------- "Behind the Research" evidence panel ---------- */
.evidence{max-width:760px;margin:1.8rem auto 0;border-top:2px dashed var(--line);padding-top:1.4rem}
.ev-h{display:flex;align-items:center;gap:.5rem;margin:.2rem 0 .3rem}
.ev-intro{color:var(--ink2);font-size:.92rem;margin:0 0 1rem}
.ev-count{display:inline-block;background:var(--bg);border:1px solid var(--line);border-radius:20px;padding:.1rem .6rem;font-size:.76rem;font-weight:700;color:var(--primary);white-space:nowrap}
.ev-fact{background:var(--card);border:1px solid var(--line);border-left:4px solid var(--accent2);border-radius:12px;margin:.6rem 0;overflow:hidden}
.ev-fact[open]{border-left-color:var(--primary);box-shadow:var(--shadow)}
.ev-fact summary{cursor:pointer;list-style:none;padding:.85rem 1rem;display:flex;gap:.6rem;align-items:flex-start;justify-content:space-between;font-weight:600}
.ev-fact summary::-webkit-details-marker{display:none}
.ev-fact summary::before{content:"▸";color:var(--primary);font-weight:700;margin-right:.1rem}
.ev-fact[open] summary::before{content:"▾"}
.ev-claim{flex:1;line-height:1.4}
.ev-chip{flex:none;font-size:.68rem;font-weight:700;border-radius:20px;padding:.15rem .55rem;white-space:nowrap;align-self:center}
.ev-chip.ok{background:#eafaf0;color:var(--good);border:1px solid #cdeede}
.ev-chip.warn{background:#fff4e6;color:#e8590c;border:1px solid #ffe3bf}
.ev-body{padding:.2rem 1.1rem 1rem;border-top:1px solid var(--line)}
.ev-cite{font-size:.82rem;color:var(--ink2);background:var(--bg);border-radius:8px;padding:.55rem .7rem;margin:.7rem 0}
.ev-link{display:inline-block;color:var(--primary);font-weight:700;margin-left:.4rem;white-space:nowrap}
.ev-row{display:grid;grid-template-columns:minmax(150px,180px) 1fr;gap:.5rem 1rem;padding:.5rem 0;border-top:1px dashed var(--line)}
.ev-row:first-of-type{border-top:none}
.ev-label{color:var(--ink);font-size:.82rem;text-transform:uppercase;letter-spacing:.03em}
.ev-text{color:var(--ink2);font-size:.93rem}
@media(max-width:620px){.ev-row{grid-template-columns:1fr;gap:.15rem}.ev-label{font-size:.76rem;color:var(--primary)}}