/* TenXed app. One column, pillars as the visual motif. Brand: purple #1f0044, gold #e1c01e, white. */
:root{
  --bg:#f6f4f9; --surface:#ffffff; --ink:#1a0f2e; --muted:#5e5470; --line:#ddd6e8; --soft:#eee9f5;
  --accent:#e1c01e; --accent-ink:#1f0044; --pillar:#1f0044; --pillar-ink:#ffffff; --pillar-empty:#e6e0ef;
  --brand:#1f0044; --brand-ink:#ffffff; --brand-line:rgba(255,255,255,.22);
  --weak:#c4552f; --ok:#2f7d5e; --warn:#b7791f;
  --display:"Oswald","Archivo Narrow","Arial Narrow",system-ui,sans-serif;
  --body:"Archivo",system-ui,-apple-system,"Segoe UI",sans-serif;
  color-scheme:light;
}
@media (prefers-color-scheme:dark){:root{
  --bg:#120a1f; --surface:#1c1230; --ink:#efeaf7; --muted:#a99cc0; --line:#33264a; --soft:#251a3a;
  --accent:#e8c93a; --accent-ink:#1f0044; --pillar:#c9b2f0; --pillar-ink:#1f0044; --pillar-empty:#2a1e40;
  --brand:#1f0044; --brand-ink:#ffffff; --brand-line:rgba(255,255,255,.18);
  --weak:#ec8a62; --ok:#6fcf9f; --warn:#e2b25a; color-scheme:dark}}
*{box-sizing:border-box}
html,body{margin:0;background:var(--bg);color:var(--ink)}
body{font:16px/1.55 var(--body);min-height:100vh;display:flex;flex-direction:column;padding-top:env(safe-area-inset-top,0px)}
a{color:var(--pillar)}
h1,h2,h3{font-family:var(--display);text-wrap:balance;margin:0;line-height:1.1}
h1{font-size:clamp(1.9rem,5vw,2.7rem);font-weight:700;letter-spacing:.005em}
h2{font-size:1.4rem;font-weight:600;letter-spacing:.01em}
h3{font-size:1.05rem;font-weight:600}
p{margin:0}
.muted{color:var(--muted)}
.small{font-size:.85rem}
.eyebrow{font-size:.72rem;letter-spacing:.12em;text-transform:uppercase;color:var(--muted);font-weight:600}
.skip{position:absolute;left:-999px}
.skip:focus{left:8px;top:8px;background:var(--accent);color:var(--accent-ink);padding:8px;z-index:9}

.top{display:flex;align-items:center;gap:12px;padding:10px 16px;border-bottom:3px solid var(--accent);background:var(--brand);color:var(--brand-ink);position:sticky;top:0;z-index:5}
.brand{display:flex;align-items:center;text-decoration:none;flex-shrink:0}
.brand img{display:block;height:36px;width:auto}
.ctx{position:relative;margin-left:auto}
.ctx-btn{font:inherit;font-weight:600;background:rgba(255,255,255,.1);color:var(--brand-ink);border:1px solid var(--brand-line);border-radius:999px;padding:6px 12px;cursor:pointer;max-width:50vw;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.ctx-menu{position:absolute;right:0;top:calc(100% + 6px);background:var(--surface);border:1px solid var(--line);border-radius:12px;min-width:240px;box-shadow:0 8px 24px rgba(0,0,0,.15);padding:6px;z-index:6}
.ctx-menu button{display:block;width:100%;text-align:left;font:inherit;background:none;border:0;color:var(--ink);padding:8px 10px;border-radius:8px;cursor:pointer}
.ctx-menu button:hover,.ctx-menu button[aria-selected="true"]{background:var(--soft)}
.ctx-menu .sep{border-top:1px solid var(--line);margin:4px 0}
.acct{display:flex;gap:8px;align-items:center}
.acct a,.acct button{font:inherit;font-size:.85rem;color:var(--brand-ink);background:none;border:1px solid var(--brand-line);border-radius:999px;padding:5px 10px;text-decoration:none;cursor:pointer}

.tabs{display:flex;gap:4px;padding:8px 16px;overflow-x:auto;border-bottom:1px solid var(--line);background:var(--surface);scrollbar-width:none}
.tabs::-webkit-scrollbar{display:none}
.tabs a{white-space:nowrap;text-decoration:none;color:var(--muted);font-weight:600;font-size:.9rem;padding:6px 12px;border-radius:999px}
.tabs a.on{background:var(--pillar);color:var(--pillar-ink)}
.tabs:empty{display:none}

.view{flex:1;width:100%;max-width:760px;margin:0 auto;padding-inline:16px;padding-block:24px 48px;display:flex;flex-direction:column;gap:24px}
.foot{font-size:.8rem;color:var(--muted);text-align:center;padding:16px;border-top:1px solid var(--line)}
.foot a{color:inherit}

.card{background:var(--surface);border:1px solid var(--line);border-radius:14px;padding:16px;display:flex;flex-direction:column;gap:10px}
.card.strong{border:2px solid var(--ink)}
.row{display:flex;gap:10px;flex-wrap:wrap;align-items:center}
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:12px}
.tile{background:var(--surface);border:1px solid var(--line);border-radius:14px;padding:14px;display:flex;flex-direction:column;gap:6px;text-decoration:none;color:var(--ink)}
.tile:hover{border-color:var(--pillar)}
.tile h3{font-size:1rem}
.tile .meta{font-size:.8rem;color:var(--muted)}
.pill{display:inline-block;align-self:flex-start;font-size:.75rem;font-weight:600;padding:2px 10px;border-radius:999px;background:var(--soft);color:var(--muted)}
.pill.gold{background:var(--accent);color:var(--accent-ink)}
.pill.green{background:var(--pillar);color:var(--pillar-ink)}
.pill.weak{background:var(--weak);color:#fff}
.pill.ok{background:var(--ok);color:#fff}

.btn{font:inherit;font-weight:600;background:var(--accent);color:var(--accent-ink);border:0;border-radius:12px;padding:12px 18px;cursor:pointer;font-size:1rem;text-decoration:none;display:inline-block;text-align:center}
.btn:disabled{opacity:.5;cursor:not-allowed}
.btn.ghost{background:transparent;color:var(--ink);border:1px solid var(--line);font-weight:500}
.btn.sm{padding:6px 12px;font-size:.85rem;border-radius:9px}
.btn.green{background:var(--pillar);color:var(--pillar-ink)}
.btn.danger{background:transparent;color:var(--weak);border:1px solid var(--weak)}
button:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible,a:focus-visible{outline:3px solid var(--accent);outline-offset:2px}

form{display:flex;flex-direction:column;gap:12px}
.two{display:grid;grid-template-columns:1fr 1fr;gap:12px}
@media (max-width:520px){.two{grid-template-columns:1fr}}
label{display:flex;flex-direction:column;gap:4px;font-size:.85rem;font-weight:600;min-width:0}
input,select,textarea{font:inherit;padding:10px 12px;border:1px solid var(--line);border-radius:10px;background:var(--bg);color:var(--ink);min-width:0;width:100%}
textarea{min-height:90px;resize:vertical}
.msg{font-weight:600;min-height:1.4em}
.msg.ok{color:var(--ok)} .msg.err{color:var(--weak)}
.check{flex-direction:row;align-items:center;gap:10px;font-weight:500}
.check input{width:auto}

/* Pillars graphic */
.pillars{background:var(--surface);border:1px solid var(--line);border-radius:14px;padding:16px 12px 10px}
.cols{display:grid;gap:6px;align-items:end;height:110px}
.col{height:100%;display:flex;flex-direction:column;justify-content:flex-end;background:var(--pillar-empty);border-radius:4px 4px 0 0;overflow:hidden}
.col span{display:block;background:var(--pillar);height:0;transition:height .35s ease}
.col.weak span{background:var(--weak)}
.base{height:6px;background:var(--ink);border-radius:2px;margin-top:2px}
.nums{display:grid;gap:6px;margin-top:6px;font-size:.7rem;color:var(--muted);text-align:center;font-variant-numeric:tabular-nums}
.progress{margin-top:10px;font-size:.85rem;color:var(--muted);display:flex;justify-content:space-between;gap:8px;flex-wrap:wrap}

/* Questions */
.qs{display:flex;flex-direction:column;gap:14px;list-style:none;margin:0;padding:0}
.q{background:var(--surface);border:1px solid var(--line);border-radius:14px;padding:16px;display:flex;flex-direction:column;gap:10px}
.q h3{display:flex;gap:10px;align-items:baseline}
.q h3 b{font-family:var(--body);font-size:.8rem;color:var(--muted);font-weight:600;font-variant-numeric:tabular-nums;min-width:1.6em}
.q p{color:var(--muted);font-size:.95rem}
.scale{display:grid;grid-template-columns:repeat(5,1fr);gap:6px}
.scale button,.opts button{font:inherit;font-size:.8rem;border:1px solid var(--line);background:transparent;color:var(--ink);border-radius:10px;padding:8px 4px;cursor:pointer;display:flex;flex-direction:column;align-items:center;gap:2px;min-width:0}
.scale button strong{font-family:var(--display);font-size:1.15rem}
.scale button small{font-size:.66rem;color:var(--muted);line-height:1.1;text-align:center}
.scale button:hover,.opts button:hover{border-color:var(--pillar)}
.scale button[aria-pressed="true"],.opts button[aria-pressed="true"]{background:var(--pillar);border-color:var(--pillar);color:var(--pillar-ink)}
.scale button[aria-pressed="true"] small{color:var(--pillar-ink)}
.opts{display:flex;flex-direction:column;gap:6px}
.opts button{align-items:flex-start;text-align:left;padding:10px 12px;font-size:.95rem}
.opts button.right{border-color:var(--ok);background:color-mix(in srgb,var(--ok) 15%,transparent)}
.opts button.wrong{border-color:var(--weak);background:color-mix(in srgb,var(--weak) 15%,transparent)}
.why{font-size:.9rem;color:var(--muted);border-left:3px solid var(--accent);padding-left:10px}

.score{display:flex;align-items:baseline;gap:12px;flex-wrap:wrap}
.score .big{font-family:var(--display);font-size:3rem;font-weight:800;line-height:1;font-variant-numeric:tabular-nums}
.weakest{display:flex;flex-direction:column;gap:10px;margin:0;padding:0;list-style:none}
.weakest li{border-left:4px solid var(--weak);padding:4px 0 4px 12px}
.weakest li strong{display:block}
.weakest li span{color:var(--muted);font-size:.93rem}

/* Lists */
.list{display:flex;flex-direction:column;gap:8px;list-style:none;margin:0;padding:0}
.item{background:var(--surface);border:1px solid var(--line);border-radius:12px;padding:12px 14px;display:flex;gap:12px;align-items:flex-start}
.item.done{opacity:.6}
.item .grow{flex:1;min-width:0}
.item a{text-decoration:none;color:inherit}
.item .meta{font-size:.8rem;color:var(--muted)}
.tick{width:22px;height:22px;border-radius:7px;border:2px solid var(--line);background:none;cursor:pointer;flex:none;display:grid;place-items:center;color:var(--pillar-ink);font-size:.9rem;margin-top:2px}
.tick.on{background:var(--pillar);border-color:var(--pillar)}
.bar{height:8px;background:var(--pillar-empty);border-radius:4px;overflow:hidden}
.bar i{display:block;height:100%;background:var(--pillar)}
pre.tpl{white-space:pre-wrap;font:.9rem/1.5 var(--body);background:var(--bg);border:1px solid var(--line);border-radius:12px;padding:14px;margin:0;max-height:60vh;overflow:auto}
.lesson p{max-width:65ch}
.lesson .body{display:flex;flex-direction:column;gap:12px}
.ws{display:flex;flex-direction:column;gap:10px}
.hero{display:flex;flex-direction:column;gap:12px}
.hero p{max-width:60ch;color:var(--muted)}
.stat{display:flex;flex-direction:column;gap:2px}
.stat b{font-family:var(--display);font-size:1.6rem;font-variant-numeric:tabular-nums}
.stat span{font-size:.8rem;color:var(--muted)}
.toast{position:fixed;left:50%;bottom:24px;transform:translateX(-50%);background:var(--ink);color:var(--bg);padding:10px 16px;border-radius:999px;font-weight:600;z-index:9;max-width:90vw}
.lock{max-width:420px;margin:40px auto;width:100%}
.lock input{font-size:1.1rem;letter-spacing:.05em}
table{border-collapse:collapse;width:100%;font-size:.9rem}
th,td{text-align:left;padding:8px 6px;border-bottom:1px solid var(--line);vertical-align:top}
th{font-size:.75rem;letter-spacing:.08em;text-transform:uppercase;color:var(--muted)}
.tw{overflow-x:auto}
.dave{border:1px dashed var(--accent);border-radius:12px;padding:12px;font-size:.9rem}
@media (prefers-reduced-motion:reduce){.col span{transition:none}}