/* The Alchemist Classroom — v3 "modern" */
:root{
  --bg:#0B1220; --panel:#111A2E; --panel-2:#16213A; --line:rgba(148,163,184,.18);
  --teal:#2DD4BF; --violet:#8B5CF6; --text:#F1F5F9; --muted:#A3B1C6;
  --display:"Sora","Segoe UI",Arial,sans-serif;
  --body:"Atkinson Hyperlegible","Segoe UI",Arial,sans-serif;
  --measure:64ch; --r:18px;
}
*{box-sizing:border-box}
[hidden]{display:none!important}
html{scroll-behavior:smooth}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{animation:none!important;transition:none!important}}
body{margin:0;background:var(--bg);color:var(--text);font:1.0625rem/1.65 var(--body)}
img{max-width:100%;display:block}
a{color:var(--teal)}
a:hover{color:#5EEAD4}
:focus-visible{outline:3px solid var(--teal);outline-offset:3px;border-radius:6px}
.wrap{width:min(1160px,100% - 2.5rem);margin-inline:auto}
.skip{position:absolute;left:-999px;top:0;background:var(--teal);color:var(--bg);padding:.6rem 1rem;z-index:20}
.skip:focus{left:1rem}
h1,h2,h3{font-family:var(--display);font-weight:600;line-height:1.12;letter-spacing:-.02em;margin:0 0 .5em}
h1{font-size:clamp(2.5rem,5.6vw,4.3rem)}
h2{font-size:clamp(1.9rem,3.6vw,2.7rem)}
h3{font-size:1.3rem;letter-spacing:-.01em}
p{margin:0 0 1em;max-width:var(--measure)}

/* ---------- top bar ---------- */
.bar{position:sticky;top:0;z-index:10;background:rgba(11,18,32,.82);backdrop-filter:blur(12px);border-bottom:1px solid var(--line)}
.bar-in{display:flex;align-items:center;justify-content:space-between;gap:1rem;padding:.75rem 0}
.brand{display:flex;align-items:center;gap:.7rem;color:var(--text);text-decoration:none}
.logo svg,.logo img{width:40px;height:40px;border-radius:10px}
.brand-name{font-family:var(--display);font-weight:600;font-size:1.05rem;letter-spacing:-.01em;display:block;line-height:1.1}
.brand-sub{display:block;font-size:.8rem;color:var(--muted)}
.bar-nav{display:flex;gap:.4rem;flex-wrap:wrap}
.bar-nav a{color:var(--text);text-decoration:none;font-size:.95rem;padding:.45rem .8rem;border-radius:999px}
.bar-nav a:hover{background:var(--panel-2)}
.bar-nav a[aria-current="page"]{background:var(--panel-2);box-shadow:inset 0 0 0 1px var(--line)}

/* ---------- buttons ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:.5rem;min-height:48px;padding:.75rem 1.4rem;border-radius:12px;font:700 1rem var(--body);text-decoration:none;cursor:pointer;border:0}
.btn-glow{background:linear-gradient(135deg,var(--teal),var(--violet));color:#06101C}
.btn-glow:hover{color:#06101C;filter:brightness(1.08);box-shadow:0 8px 26px rgba(45,212,191,.3)}
.btn-line{background:transparent;color:var(--text);box-shadow:inset 0 0 0 1.5px var(--line)}
.btn-line:hover{color:var(--text);box-shadow:inset 0 0 0 1.5px var(--muted)}

/* ---------- hero ---------- */
.hero{position:relative;overflow:hidden;min-height:clamp(440px,62vh,640px);display:flex;align-items:center;
  background:radial-gradient(60% 80% at 80% 40%,rgba(139,92,246,.22),transparent 70%),radial-gradient(50% 60% at 65% 70%,rgba(45,212,191,.16),transparent 70%)}
.hero-art{position:absolute;inset:0}
.hero-art img{width:100%;height:100%;object-fit:cover;object-position:right center}
.hero-art::after{content:"";position:absolute;inset:0;background:linear-gradient(90deg,var(--bg) 0,rgba(11,18,32,.85) 35%,rgba(11,18,32,0) 65%),linear-gradient(0deg,var(--bg),transparent 25%)}
.hero-in{position:relative;z-index:1;padding:4rem 0}
.hero-copy{max-width:560px}
.lede{font-size:1.2rem;color:var(--muted);max-width:44ch;margin-bottom:1.8rem}

/* ---------- index: modern screen with orbit menu ---------- */
.index{padding:clamp(3rem,7vw,5.5rem) 0}
.index-title{text-align:center;margin-bottom:.2em}
.index-sub{text-align:center;color:var(--muted);margin:0 auto 2.2rem}
.monitor{max-width:980px;margin:0 auto}
.screen{position:relative;aspect-ratio:16/10;border-radius:22px;padding:14px;
  background:linear-gradient(160deg,#2A3650,#0E1526 40%,#0A101D);box-shadow:0 0 0 1px rgba(255,255,255,.06),0 40px 80px rgba(0,0,0,.55),0 0 80px rgba(45,212,191,.08)}
.screen::before{content:"";position:absolute;inset:14px;border-radius:12px;
  background:radial-gradient(70% 70% at 50% 50%,#101C33,#070C17);box-shadow:inset 0 0 0 1px rgba(45,212,191,.12)}
.screen::after{content:"";position:absolute;inset:14px;border-radius:12px;pointer-events:none;
  background:linear-gradient(120deg,rgba(255,255,255,.06),transparent 35%)}
.stand{display:flex;flex-direction:column;align-items:center}
.neck{width:90px;height:46px;background:linear-gradient(90deg,#1C2639,#2A3650 50%,#1C2639)}
.base{width:300px;height:14px;border-radius:0 0 50% 50%/0 0 100% 100%;background:linear-gradient(#2A3650,#141C2E);box-shadow:0 18px 30px rgba(0,0,0,.5)}

.circle{position:absolute;top:50%;left:50%;height:calc(100% - 28px);aspect-ratio:1;transform:translate(-50%,-50%);z-index:1}
.sigil{position:absolute;inset:0;width:100%;height:100%}
.spin{transform-origin:300px 300px;animation:spin 80s linear infinite}
@keyframes spin{to{transform:rotate(360deg)}}
.core{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);display:flex;flex-direction:column;align-items:center;gap:.5rem;text-align:center;width:34%}
.core-mark svg,.core-mark img{width:clamp(52px,8vw,84px);height:auto;border-radius:18px;filter:drop-shadow(0 0 18px rgba(45,212,191,.45))}
.core-text{font-family:var(--display);font-size:clamp(.8rem,1.3vw,1rem);color:var(--muted)}

.nodes{list-style:none;margin:0;padding:0}
.node{position:absolute;transform:translate(-50%,-50%);width:clamp(96px,16%,150px)}
.node a{display:flex;flex-direction:column;align-items:center;gap:.45rem;text-decoration:none;color:var(--text);text-align:center}
.node .tile{display:grid;place-items:center;width:clamp(58px,9vw,92px);aspect-ratio:1;border-radius:22px;
  background:rgba(22,33,58,.75);backdrop-filter:blur(6px);box-shadow:inset 0 0 0 1.5px var(--c,var(--teal)),0 0 24px color-mix(in srgb,var(--c,var(--teal)) 45%,transparent);transition:transform .2s,box-shadow .2s}
.node .tile img,.node .tile svg{width:78%;height:78%;object-fit:contain;border-radius:16px}
.node .label{font-family:var(--display);font-weight:600;font-size:clamp(.8rem,1.4vw,1.02rem);line-height:1.2}
.node .count{font-size:.78rem;color:var(--muted)}
.node a:hover .tile,.node a:focus-visible .tile{transform:scale(1.07);box-shadow:inset 0 0 0 2px var(--c,var(--teal)),0 0 38px color-mix(in srgb,var(--c,var(--teal)) 70%,transparent)}
.node.soon a{pointer-events:none}
.node.soon .tile{box-shadow:inset 0 0 0 1.5px rgba(148,163,184,.35);opacity:.6}
.node.soon .label{color:var(--muted);font-weight:400}

/* phones: the orbit turns into a simple list inside the screen */
@media (max-width:640px){
  .screen{aspect-ratio:auto;padding:14px}
  .circle{position:relative;top:auto;left:auto;transform:none;height:auto;aspect-ratio:auto;padding:1.4rem 1rem}
  .sigil,.core-text{display:none}
  .core{position:static;transform:none;width:auto;margin-bottom:1rem}
  .nodes{display:grid;gap:.7rem}
  .node{position:static!important;transform:none;width:auto}
  .node a{flex-direction:row;text-align:left;gap:1rem;padding:.6rem;border-radius:16px;background:rgba(22,33,58,.6)}
  .node .tile{width:60px;flex:none}
  .neck{height:28px;width:60px}.base{width:200px}
}

/* ---------- about ---------- */
.about{padding:clamp(3rem,7vw,5rem) 0;border-top:1px solid var(--line)}
.about-in{display:grid;grid-template-columns:auto 1fr;gap:2.5rem;align-items:center}
.portrait img,.portrait svg{width:200px;height:200px;border-radius:28px;object-fit:cover;box-shadow:0 0 0 1px var(--line),0 20px 50px rgba(139,92,246,.25)}

/* ---------- section + app pages ---------- */
.page{padding:clamp(2rem,5vw,3.5rem) 0 clamp(3rem,7vw,5rem)}
.crumbs{font-size:.95rem;color:var(--muted);margin-bottom:1.6rem}
.crumbs a{color:var(--muted)}
.crumbs a:hover{color:var(--text)}
.sec-head{display:grid;grid-template-columns:auto 1fr;gap:1.8rem;align-items:center;margin-bottom:2.4rem}
.sec-head .emblem img,.sec-head .emblem svg{width:120px;height:120px;border-radius:28px;box-shadow:0 0 0 1px var(--line),0 0 40px color-mix(in srgb,var(--c,var(--teal)) 30%,transparent)}
.sec-head p{color:var(--muted);font-size:1.15rem;margin:0}
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(270px,1fr));gap:1.2rem}
.card{display:flex;flex-direction:column;gap:.8rem;padding:1.4rem;border-radius:var(--r);background:var(--panel);box-shadow:inset 0 0 0 1px var(--line);text-decoration:none;color:var(--text);transition:box-shadow .2s,transform .2s}
.card:hover{color:var(--text);transform:translateY(-2px);box-shadow:inset 0 0 0 1px color-mix(in srgb,var(--c,var(--teal)) 60%,transparent),0 14px 34px rgba(0,0,0,.35)}
.card .icon img,.card .icon svg{width:72px;height:72px;border-radius:18px}
.card h3{margin:0}
.card p{margin:0;color:var(--muted)}
.card .meta{margin-top:auto;display:flex;justify-content:space-between;align-items:center;padding-top:.6rem;border-top:1px solid var(--line)}
.card .price{font-family:var(--display);font-weight:600;font-size:1.2rem}
.card .go{color:var(--teal);font-weight:700}
.empty{padding:2.5rem;border-radius:var(--r);background:var(--panel);box-shadow:inset 0 0 0 1px var(--line);color:var(--muted);text-align:center}

.app{display:grid;grid-template-columns:320px 1fr;gap:3rem;align-items:start}
.buybox{position:sticky;top:90px;padding:1.6rem;border-radius:22px;background:var(--panel);box-shadow:inset 0 0 0 1px var(--line);display:flex;flex-direction:column;gap:1rem}
.buybox .icon img,.buybox .icon svg{width:120px;height:120px;border-radius:28px}
.buybox .price{font-family:var(--display);font-size:2.6rem;font-weight:700;line-height:1}
.buybox .price small{display:block;font:400 .95rem var(--body);color:var(--muted);margin-top:.35rem}
.buybox .btn{width:100%}
.buybox .soon{font-size:.9rem;color:var(--muted);margin:0}
.app-body .lead{font-size:1.2rem;color:var(--muted)}
.app-body h2{font-size:1.5rem;margin-top:2.2rem}
.feat{list-style:none;padding:0;margin:0;display:grid;grid-template-columns:1fr 1fr;gap:1rem}
.feat li{padding:1.1rem 1.2rem;border-radius:14px;background:var(--panel);box-shadow:inset 0 0 0 1px var(--line)}
.feat strong{display:block;font-family:var(--display);font-weight:600;margin-bottom:.2rem}
.feat span{color:var(--muted)}
.opts{display:grid;grid-template-columns:1fr 1fr;gap:1rem}
.opt{padding:1.3rem;border-radius:14px;background:linear-gradient(160deg,rgba(45,212,191,.08),rgba(139,92,246,.06));box-shadow:inset 0 0 0 1px var(--line)}
.opt h3{font-size:1.1rem}
.opt ol{margin:0;padding-left:1.2rem;color:var(--muted)}
.opt li{margin-bottom:.35rem}
.ticks{list-style:none;padding:0;margin:0;display:grid;gap:.45rem}
.ticks li{padding-left:1.7rem;position:relative}
.ticks li::before{content:"";position:absolute;left:0;top:.45em;width:1rem;height:.55rem;border-left:2.5px solid var(--teal);border-bottom:2.5px solid var(--teal);transform:rotate(-45deg)}
.note{color:var(--muted);font-size:.95rem}

/* ---------- footer ---------- */
.foot{border-top:1px solid var(--line);padding:2rem 0;color:var(--muted);font-size:.95rem}
.foot-in{display:flex;justify-content:space-between;gap:1.2rem;flex-wrap:wrap}
.foot nav{display:flex;gap:1.2rem;flex-wrap:wrap}
.foot a{color:var(--text)}

/* legal pages */
.legal{max-width:760px;padding:3rem 0}
.legal h2{font-size:1.5rem;margin-top:2rem}
.draft{background:rgba(139,92,246,.14);box-shadow:inset 0 0 0 1px rgba(139,92,246,.45);padding:.9rem 1.1rem;border-radius:12px;margin-bottom:2rem}

@media (max-width:880px){
  .app,.about-in,.sec-head{grid-template-columns:1fr}
  .buybox{position:static}
  .feat,.opts{grid-template-columns:1fr}
  .bar-nav a.hide-sm{display:none}
}
/* fixes */
.page h1:focus{outline:none}
.circle{height:calc(100% - 64px)}
.node{width:auto}
.node .label{white-space:nowrap}
@media (max-width:640px){.circle{height:auto}.node .label{white-space:normal}}
/* real art: let images fill their tiles */
.node .tile{overflow:hidden}
.node .tile img{width:100%;height:100%;object-fit:cover;border-radius:20px}
.node .tile .slot{display:contents}
.sec-head .emblem img{object-fit:cover}
.hero-art img{object-position:right center}
/* hero: art on the right, headline on clean space */
.hero-art{left:34%}
.hero-art::after{background:linear-gradient(90deg,var(--bg) 0,rgba(11,18,32,0) 22%),linear-gradient(0deg,var(--bg),transparent 22%)}
@media (max-width:880px){
  .hero{flex-direction:column;align-items:stretch;min-height:0}
  .hero-art{position:relative;left:0;height:clamp(220px,52vw,380px)}
  .hero-art::after{background:linear-gradient(0deg,var(--bg),transparent 35%)}
  .hero-in{padding:1rem 0 3rem}
}
@media (max-width:640px){.bar-nav{display:none}}

/* app window: screenshot viewer */
.appwin{margin:1.8rem 0 0;border-radius:16px;overflow:hidden;background:#0E1628;box-shadow:0 0 0 1px var(--line),0 24px 60px rgba(0,0,0,.5),0 0 60px rgba(45,212,191,.08)}
.appwin-bar{display:flex;align-items:center;gap:.8rem;padding:.6rem .9rem;background:#16213A;border-bottom:1px solid var(--line)}
.appwin-bar .dots{display:flex;gap:.4rem}
.appwin-bar .dots i{width:11px;height:11px;border-radius:50%;background:#334155}
.appwin-bar .dots i:first-child{background:#F87171}.appwin-bar .dots i:nth-child(2){background:#FBBF24}.appwin-bar .dots i:nth-child(3){background:#34D399}
.appwin-title{font-size:.85rem;color:var(--muted)}
.appwin-view{display:block;width:100%;padding:0;border:0;background:none;cursor:zoom-in}
.appwin-view img{width:100%;height:auto}
.appwin figcaption{display:flex;justify-content:space-between;align-items:center;gap:1rem;flex-wrap:wrap;padding:.8rem 1rem;border-top:1px solid var(--line)}
.appwin-cap{color:var(--text);font-size:.98rem}
.appwin-tabs{display:flex;gap:.5rem}
.appwin-tabs button{width:76px;padding:0;border:0;border-radius:8px;overflow:hidden;cursor:pointer;opacity:.55;box-shadow:0 0 0 1.5px var(--line);background:none}
.appwin-tabs button[aria-pressed="true"]{opacity:1;box-shadow:0 0 0 2px var(--teal)}
.appwin-tabs button:hover{opacity:.9}
.appwin-tabs img{width:100%;height:auto}
.appwin-note{margin:0;padding:0 1rem .8rem;font-size:.85rem;color:var(--muted)}
.shot-dialog{max-width:min(1400px,96vw);width:100%;padding:0;border:0;border-radius:14px;background:#0E1628;color:var(--text);box-shadow:0 30px 80px rgba(0,0,0,.6)}
.shot-dialog::backdrop{background:rgba(5,9,18,.8)}
.shot-dialog img{width:100%;height:auto;display:block}
.shot-dialog p{margin:0;padding:.8rem 1rem;color:var(--muted)}
.dlg-close{position:absolute;top:.5rem;right:.6rem;width:40px;height:40px;border-radius:50%;border:0;background:rgba(11,18,32,.85);color:#fff;font-size:1.5rem;cursor:pointer}

/* demo button on app pages */
.btn-demo{display:flex;margin-top:.6rem;background:transparent;border:1px solid rgba(45,212,191,.55);color:#2DD4BF}
.btn-demo:hover{background:rgba(45,212,191,.12)}

/* subject folders (Curriculum Tools) */
.folders{display:grid;grid-template-columns:repeat(auto-fill,minmax(190px,1fr));gap:1rem}
.folder{position:relative;display:flex;flex-direction:column;gap:.35rem;padding:1.6rem 1.3rem 1.3rem;border-radius:4px 18px 18px 18px;background:var(--panel);box-shadow:inset 0 0 0 1px var(--line);text-decoration:none;color:var(--text);transition:transform .2s,box-shadow .2s}
.folder::before{content:"";position:absolute;top:-10px;left:0;width:42%;height:12px;border-radius:8px 8px 0 0;background:var(--panel);box-shadow:inset 1px 1px 0 var(--line),inset -1px 0 0 var(--line)}
.folder:hover,.folder:focus-visible{color:var(--text);transform:translateY(-2px);box-shadow:inset 0 0 0 1px color-mix(in srgb,var(--c) 60%,transparent),0 14px 34px rgba(0,0,0,.35)}
.folder-icon svg{width:44px;height:44px}
.folder-name{font-family:var(--display);font-weight:600;font-size:1.2rem}
.folder-count{color:var(--muted);font-size:.9rem}
.subj-emblem{display:grid;place-items:center;width:120px;height:120px;border-radius:28px;background:var(--panel);box-shadow:0 0 0 1px var(--line),0 0 40px color-mix(in srgb,var(--c) 30%,transparent)}
.subj-emblem svg{width:64px;height:64px}
.folders{margin-top:.5rem}
.demo-tag{align-self:flex-start;font-size:.8rem;font-weight:700;color:var(--teal);background:rgba(45,212,191,.12);border-radius:999px;padding:.2rem .65rem}