/* Playground · stile degli esercizi. Stesse regole delle illustrazioni del sito:
   tela scura a puntini, forme navy, un solo accento rosso, selezione blu Figma, testo Open Sans. */
:root{--figma:#0d99ff;--figma-deep:#0a6fd1;--ok:#14ae5c;--canvas:#1b1b1b}

.pg-hero{padding-block:7rem 2.5rem;min-height:0}
.pg-hero .maintitle{font-size:clamp(2.2rem,4.6vw,3.6rem);margin-bottom:.8rem}
.pg-hero .herosubtitle{margin-bottom:0}

.pg{padding-block:2rem 4rem;background:var(--paper)}
.pg-top{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:.8rem 1.5rem;margin-bottom:1rem}
.pg-count{margin:0;font-size:.75rem;font-weight:700;letter-spacing:2px;text-transform:uppercase;color:var(--muted)}
.pg-dots{list-style:none;margin:0;padding:0;display:flex;gap:.5rem}
.pg-dot{width:44px;height:44px;border-radius:3px;border:1.5px solid var(--soft);background:#fff;color:var(--ink);font:700 .95rem/1 var(--f-body);cursor:pointer}
@media (hover:hover){.pg-dot:hover{border-color:var(--navy)}}
.pg-dot.done{background:var(--navy);border-color:var(--navy);color:#fff}
.pg-dot.cur{border-color:var(--accent);box-shadow:inset 0 0 0 1.5px var(--accent)}

.pg-grid{display:grid;grid-template-columns:minmax(0,1fr) 19rem;gap:1.25rem;align-items:start}
@media (max-width:900px){.pg-grid{grid-template-columns:minmax(0,1fr)}}
@media (max-width:560px){.pg .pg-canvas{padding-inline:.75rem}.pg .pg-brief,.pg .pg-foot{padding-inline:1rem}}

.pg-stage{background:var(--canvas);border-radius:3px;color:#fff;overflow:hidden}
.pg-brief{padding:1.4rem 1.5rem 0}
.pg-brief h2{font-family:var(--f-display);font-weight:800;font-size:1.5rem;margin:0 0 .3rem}
.pg-brief h2:focus{outline:none}
.pg-brief p{color:var(--soft);margin:0;max-width:40rem}

.pg-canvas{position:relative;padding:3rem 1.5rem 3.5rem;min-height:15rem;display:flex;align-items:center;
  background-image:radial-gradient(rgba(255,255,255,.12) 1px,transparent 1px);background-size:16px 16px;touch-action:pan-y}
.pg-pair{display:grid;justify-items:start}
.pg-pair>*{grid-area:1/1}

.pg-frame{position:relative;display:flex;background:#fff;color:var(--ink);border-radius:8px;box-shadow:0 0 0 1px rgba(255,255,255,.08)}
.pg-frame.is-row{flex-direction:row;align-items:center}
.pg-frame.is-col{flex-direction:column;align-items:flex-start}
.pg-fname{position:absolute;left:0;bottom:calc(100% + 6px);font-size:.75rem;font-weight:600;color:var(--muted-dark);white-space:nowrap;pointer-events:none}
.pg-frame:not(.ghost){outline:1px solid rgba(13,153,255,.55)}

/* bersaglio: solo i contorni tratteggiati, sopra il frame del giocatore */
.pg-frame.ghost{background:none;box-shadow:none;z-index:2;pointer-events:none}
.pg-frame.ghost .pg-fname{display:none}
.pg-frame.ghost .k{background:none!important;border-color:transparent!important;color:transparent!important;outline:2px dashed var(--accent);outline-offset:-1px}
.pg-frame.ghost .k *{visibility:hidden}
.pg-frame.ghost .k.locked{outline:none}

.pg-handle{position:absolute;right:-12px;top:50%;width:24px;height:44px;margin-top:-22px;cursor:ew-resize;touch-action:none;z-index:3}
.pg-handle::before{content:"";position:absolute;left:7px;top:14px;width:8px;height:16px;background:#fff;border:1.5px solid var(--figma)}
.pg-handle.on::before,.pg-handle:hover::before{background:var(--figma)}

/* livelli */
.k{position:relative;display:flex;align-items:center;min-width:0;white-space:nowrap;cursor:pointer;border-radius:3px}
.k.locked{cursor:default}
.k:focus-visible{outline:3px solid var(--accent);outline-offset:2px;box-shadow:none}
.k.sel{outline:2px solid var(--figma);outline-offset:1px}
.k.sel::after{content:attr(data-label);position:absolute;left:50%;top:calc(100% + 6px);transform:translateX(-50%);background:var(--figma-deep);color:#fff;font:600 .7rem/1 var(--f-body);padding:.3rem .45rem;border-radius:3px;white-space:nowrap;z-index:4;pointer-events:none}
.k.bad{outline:2px solid var(--accent);outline-offset:1px}
.k.bad.sel{outline-color:var(--accent)}
.k.bad.sel::after{background:var(--accent)}
.k span{overflow:hidden;text-overflow:ellipsis;min-width:0}
.k svg{flex:none}

.k-title .k-title{font-family:var(--f-display);font-weight:800;font-size:1.2rem;line-height:1.2}
.k-input{height:44px;padding:0 12px;border:1.5px solid var(--soft);color:var(--muted)}
.k-button{height:44px;padding:0 20px;justify-content:center;background:var(--accent);color:#fff;font-weight:600}
.k-icon{color:var(--navy)}
.k-text{height:24px;color:var(--muted)}
.k-chip{height:32px;padding:0 12px;border-radius:999px;background:#e9e9f5;color:var(--indigo);font-weight:600;font-size:.9rem;justify-content:center}
.k-photo{height:56px;border-radius:4px;background:linear-gradient(160deg,#ff8a65 0 30%,#282179 30% 62%,#192e5f 62%)}
.k-trip{flex-direction:column;align-items:flex-start;justify-content:center;line-height:1.3}
.k-t1{font-weight:700;color:var(--ink);max-width:100%}
.k-t2{font-size:.85rem;color:var(--muted);max-width:100%}
.k-price{font-weight:700;color:var(--accent);font-size:1.05rem;justify-content:flex-end}
.k-tab{flex-direction:column;justify-content:center;gap:2px;padding:8px 10px;color:var(--navy);font-size:.75rem;font-weight:600}
.k-tab span{max-width:100%}

.pg-foot{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:.6rem 1.5rem;padding:0 1.5rem 1.3rem}
.pg-range{display:flex;align-items:center;gap:.8rem;font-size:.85rem;color:var(--soft);flex:1 1 16rem}
.pg-range span{white-space:nowrap}
.pg-range output{font-variant-numeric:tabular-nums;color:#fff;font-weight:600;display:inline-block;min-width:4.2em}
.pg-range input{flex:1;accent-color:var(--figma);min-height:44px}
.pg-legend{margin:0;font-size:.8rem;color:var(--muted-dark);display:flex;align-items:center;gap:.5rem}
.pg-dash{display:inline-block;width:22px;height:0;border-top:2px dashed var(--accent)}

/* pannello, come le proprietà di Figma */
.pg-panel{background:#fff;border:1px solid var(--line);border-radius:3px;padding:1.2rem}
.pg-h{font-size:.75rem;font-weight:700;letter-spacing:2px;text-transform:uppercase;color:var(--muted);margin:0 0 .6rem}
.pg-h+*{margin-bottom:1.3rem}
.pg-layers{list-style:none;margin:0 0 1.3rem;padding:0;border-top:1px solid var(--line)}
.pg-layer{width:100%;min-height:44px;display:flex;align-items:center;justify-content:space-between;gap:.6rem;background:none;border:0;border-bottom:1px solid var(--line);padding:.4rem .5rem;font:500 .9rem/1.3 var(--f-body);color:var(--ink);text-align:left;cursor:pointer}
@media (hover:hover){.pg-layer:hover:not(.sel){background:var(--paper)}}
.pg-layer.sel{background:#e5f4ff;box-shadow:inset 3px 0 0 var(--figma)}
.pg-layer.locked{color:var(--muted)}
.pg-lname{overflow-wrap:anywhere}
.pg-lsize{font-size:.75rem;font-weight:700;color:var(--figma-deep);white-space:nowrap}
.pg-layer.locked .pg-lsize{color:var(--muted)}
.pg-seg{display:grid;grid-template-columns:repeat(3,1fr);border:1.5px solid var(--soft);border-radius:3px;overflow:hidden}
.pg-seg button{min-height:44px;border:0;border-right:1px solid var(--soft);background:#fff;font:600 .9rem/1 var(--f-body);color:var(--ink);cursor:pointer}
.pg-seg button:last-child{border-right:0}
@media (hover:hover){.pg-seg button:hover:not(:disabled):not([aria-checked="true"]){background:var(--paper)}}
.pg-seg button[aria-checked="true"],.pg-seg button[aria-checked="true"]:hover{background:var(--figma-deep);color:#fff}
.pg-seg button:disabled{color:#9a9a9a;cursor:not-allowed}
.pg-seg button[aria-checked="true"]:disabled{background:#9a9a9a;color:#fff}
.pg-seg+.pg-note{margin-top:-.6rem}
.pg-note{min-height:1.4em;font-size:.85rem;color:var(--muted);margin:0 0 1rem}
.pg-check{width:100%;padding-inline:1rem}
.pg-panel .button:hover{background:var(--accent);border-color:var(--accent);color:#fff}
@media (hover:hover){.pg-panel .button:hover{background:var(--accent-hover);border-color:var(--accent-hover);color:#fff}}
.pg-panel .button:active{background:var(--accent-hover);border-color:var(--accent-hover);color:#fff}
.pg-check:disabled{opacity:.6;cursor:progress}
.pg-result:not(:empty){margin-top:1rem;padding:1rem;border-radius:3px;font-size:.95rem}
.pg-result p{margin:0 0 .6rem}
.pg-result p:last-child{margin:0}
.pg-result.ok{background:#e8f7ee;color:#0b5c31}
.pg-result.ko{background:#fdece7;color:#7a1d08}
.pg-hint{color:var(--text)}
.pg-result .button{width:100%;padding-inline:1rem;margin-top:.4rem}
.pg-done{color:var(--text)}
.pg-btns{display:grid;gap:.4rem}
.pg-link{background:none;border:0;min-height:44px;font:600 .95rem var(--f-body);color:var(--navy);text-decoration:underline;text-underline-offset:.2em;cursor:pointer}
.pg-nojs{margin-top:1rem;color:var(--muted)}

.pg-learn{padding-block:3rem 4rem}
.pg-learn .wrap>div{max-width:40rem}
.pg-learn .cb-h{margin-top:0}

/* indice: schede in arrivo e anteprima animata */
.course-card.soon{background:var(--paper)}
.course-card.soon:hover{transform:none;box-shadow:none}
.course-card.soon h3{color:var(--muted)}
.thumb .t-fill,.thumb .t-frame{transform-box:fill-box;transform-origin:left center}
.thumb .t-price,.thumb .t-handle{transform-box:fill-box}
@media (prefers-reduced-motion:no-preference){
  .course-card:hover .t-frame{animation:pg-stretch 1.4s ease-in-out}
  .course-card:hover .t-fill{animation:pg-fill 1.4s ease-in-out}
  .course-card:hover .t-price,.course-card:hover .t-handle{animation:pg-move 1.4s ease-in-out}
}
@keyframes pg-stretch{50%{transform:scaleX(.75)}}
@keyframes pg-fill{50%{transform:scaleX(.5)}}
@keyframes pg-move{50%{transform:translateX(-60px)}}