html{color-scheme:light}
body{margin:0;background:var(--paper);color:var(--ink);font-family:var(--f-body);font-size:16px;line-height:1.5}
img{max-width:100%}
[hidden]{display:none!important}
*{box-sizing:border-box}

:root{
  --paper:#f3f5f9; --surface:#ffffff; --ink:#172031; --muted:#586379; --rule:#d6dce7; --grid:#e4eaf3;
  --ent:#1d5bb8; --ent-hl:#d3e3ff;
  --att:#16713f; --att-hl:#c8eed6;
  --rel:#b44e0b; --rel-hl:#ffe0b5;
  --gen:#6a3fa3; --gen-hl:#eadcff;
  --focus:#1d5bb8; --warn:#8f5400; --ok:#16713f;
  --f-display:-apple-system, BlinkMacSystemFont, "SF Pro Display", Inter, "Helvetica Neue", Arial, sans-serif;
  --f-body:-apple-system, BlinkMacSystemFont, "SF Pro Text", Inter, "Helvetica Neue", Arial, sans-serif;
  --f-mono:"JetBrains Mono",ui-monospace,Menlo,Consolas,monospace;
}

.app{max-width:1480px;margin:0 auto;padding:18px 16px 40px;display:flex;flex-direction:column;gap:18px}
button,input,select,textarea{font:inherit;color:inherit}
:focus-visible{outline:3px solid var(--focus);outline-offset:2px}

.top{display:flex;align-items:center;justify-content:space-between;gap:10px 18px;flex-wrap:wrap}
.brand h1{font-family:var(--f-display);font-weight:800;font-size:clamp(1.45rem,2.3vw,2rem);line-height:1.05;margin:0}
.brand h1 .slash{color:var(--rel)}
.brand .eyebrow{font-size:.74rem;text-transform:uppercase;letter-spacing:.09em;color:var(--muted);font-weight:700;margin:0 0 4px}

.ex-bar{display:flex;flex:1 1 auto;justify-content:flex-end;align-items:center;gap:6px;flex-wrap:wrap}
.user-status{display:flex;align-items:center;gap:8px;margin-right:12px;padding-right:12px;border-right:1px solid var(--rule)}
select,input[type=text],input[type=password],textarea{background:var(--surface);border:1px solid var(--rule);border-radius:8px;padding:.4rem .55rem}

.btn{background:var(--surface);border:1px solid var(--rule);border-radius:8px;padding:.4rem .7rem;font-weight:700;font-size:.86rem;cursor:pointer;white-space:nowrap}
.btn:hover{border-color:var(--muted)}
.btn.primary{background:var(--ent);border-color:var(--ent);color:var(--surface)}
.btn.danger{color:var(--rel);border-color:var(--rel)}
.btn.success{background:#16713f;border-color:#16713f;color:#fff}
.btn.mini{padding:.15rem .5rem;font-size:.8rem}

.grid{display:grid;grid-template-columns:minmax(0,5fr) minmax(0,7fr);gap:18px;align-items:start}
@media (max-width:1000px){.grid{grid-template-columns:minmax(0,1fr)}}
.col{display:flex;flex-direction:column;gap:18px;min-width:0}
.panel{background:var(--surface);border:1px solid var(--rule);border-radius:12px;padding:16px 18px;min-width:0}
.panel h2{font-family:var(--f-display);font-weight:700;font-size:1.15rem;margin:0 0 10px}
.eyebrow{font-size:.74rem;text-transform:uppercase;letter-spacing:.09em;color:var(--muted);font-weight:700;margin:0 0 4px}
.hint{font-size:.88rem;color:var(--muted);margin:0 0 12px}

.tools{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:10px}
.tool{display:inline-flex;align-items:center;gap:8px;border:2px solid var(--rule);background:var(--surface);border-radius:999px;padding:.4rem .85rem .4rem .55rem;font-weight:700;cursor:pointer}
.tool kbd{font-family:var(--f-mono);font-size:.72rem;color:var(--muted);border:1px solid var(--rule);border-radius:4px;padding:0 4px}
.sw{width:18px;height:18px;border-radius:5px;display:inline-block;flex:none}
.sw.entity{background:var(--ent-hl);box-shadow:inset 0 0 0 2px var(--ent)}
.sw.attribute{background:var(--att-hl);box-shadow:inset 0 0 0 2px var(--att);border-radius:50%}
.sw.relation{background:var(--rel-hl);box-shadow:inset 0 0 0 2px var(--rel);transform:rotate(45deg) scale(.82)}
.sw.hier{background:var(--gen-hl);box-shadow:inset 0 0 0 2px var(--gen);clip-path:polygon(50% 0,100% 100%,0 100%);border-radius:2px}
.sw.eraser{background:repeating-linear-gradient(45deg,var(--rule) 0 3px,transparent 3px 6px);box-shadow:inset 0 0 0 2px var(--muted)}
.tool[aria-pressed="true"].t-entity{border-color:var(--ent);background:var(--ent-hl)}
.tool[aria-pressed="true"].t-attribute{border-color:var(--att);background:var(--att-hl)}
.tool[aria-pressed="true"].t-relation{border-color:var(--rel);background:var(--rel-hl)}
.tool[aria-pressed="true"].t-hier{border-color:var(--gen);background:var(--gen-hl)}
.tool[aria-pressed="true"].t-eraser{border-color:var(--muted);background:var(--grid)}

#text{font-size:1.14rem;line-height:2;white-space:pre-wrap;padding:14px 16px;border:1px dashed var(--rule);border-radius:10px;background:var(--paper)}
#text span.w{cursor:pointer;border-radius:3px}
#text span.w:hover{background:var(--grid)}
mark.hl{color:inherit;border-radius:4px;padding:1px 2px}
mark.t-entity{background:var(--ent-hl);box-shadow:inset 0 -2.5px 0 var(--ent)}
mark.t-attribute{background:var(--att-hl);box-shadow:inset 0 -2.5px 0 var(--att)}
mark.t-hier{background:var(--gen-hl);box-shadow:inset 0 -2.5px 0 var(--gen)}
mark.t-relation{background:var(--rel-hl);box-shadow:inset 0 -2.5px 0 var(--rel)}
mark.hot{outline:2px solid var(--ink);outline-offset:1px}

.lists{display:grid;gap:16px}
.rows{display:flex;flex-direction:column;gap:6px}
.item-drop{border:1px solid var(--rule);border-radius:10px;background:var(--surface);overflow:hidden}
.item-drop + .item-drop{margin-top:6px}
.item-drop summary{display:flex;align-items:center;gap:8px;padding:8px 10px;cursor:pointer;font-weight:700}
.item-drop .drop-body{padding:0 10px 10px;border-top:1px solid var(--rule);display:grid;gap:8px}
.field-row{display:flex;flex-wrap:wrap;align-items:center;gap:8px;padding:5px 0}
.field-stack{display:grid;gap:4px}
.field-stack textarea{width:100%;min-height:3.2rem;resize:vertical}
.participant-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(130px,1fr));gap:6px}
.attr-kind{font-size:.72rem;color:var(--muted);border:1px solid var(--rule);border-radius:99px;padding:1px 7px}
.del{border:0;background:none;color:var(--muted);font-size:1.2rem;cursor:pointer;margin-left:auto}
.addrow{display:flex;flex-wrap:wrap;gap:6px;margin-top:8px;padding:8px;border:1px dashed var(--rule);border-radius:8px}

.board{border:1px solid var(--rule);border-radius:12px;overflow:hidden;background:var(--surface)}
.canvas{position:relative;min-width:640px}
#dg{display:block;width:100%;height:auto;touch-action:none;user-select:none}
#dg text{font-family:var(--f-body)}
.gridline{stroke:var(--grid)}
.node{cursor:grab}
.node:active{cursor:grabbing}
.ent rect{fill:var(--surface);stroke:var(--ent);stroke-width:2.4}
.ent text,.rel text{fill:var(--ink);font-weight:700;font-size:15px}
.ent.child rect{stroke:var(--gen);fill:var(--gen-hl)}
.rel polygon{fill:var(--rel-hl);stroke:var(--rel);stroke-width:2.2}
.att circle.dot{fill:var(--surface);stroke:var(--att);stroke-width:2}
.att.key circle.dot{fill:var(--att)}
.att text{fill:var(--ink);font-size:14px}
.aline{stroke:var(--att);stroke-width:1.6}
.link{stroke:var(--ink);stroke-width:2.2;fill:none}
.link.opt{stroke-dasharray:9 6}
.link.unset{stroke:var(--muted);stroke-opacity:.55;stroke-width:1.6}
.weak-link{stroke:var(--ent);stroke-width:1.7;stroke-dasharray:5 5;fill:none}
.hline{stroke:var(--ink);stroke-width:2.2;fill:none}
.harrow,.hjoin{fill:var(--ink)}
.hlabel{font-family:var(--f-mono)!important;font-weight:700;font-size:12.5px;fill:var(--ink)}
.hlabel-bg{fill:var(--surface);stroke:var(--rule)}
.slot{cursor:pointer}
.slot rect{fill:var(--surface);stroke:var(--ink);stroke-width:1.4}
.slot text{font-family:var(--f-mono)!important;font-weight:700;font-size:12.5px;fill:var(--ink)}
.slot.empty rect{stroke:var(--muted);stroke-dasharray:3 3}

.cards{display:flex;flex-wrap:wrap;align-items:center;gap:8px;padding:8px 10px;background:var(--paper);border:1px solid var(--rule);border-radius:10px;margin-bottom:10px}
.chip{font-family:var(--f-mono);font-weight:700;padding:.25rem .55rem;border:1.5px solid var(--ink);border-radius:6px;background:var(--surface);cursor:pointer}
.chip[aria-pressed="true"]{background:var(--ink);color:var(--surface)}

#pop{position:absolute;z-index:20;transform:translateX(-50%);display:flex;gap:4px;padding:6px;background:var(--surface);border:1px solid var(--rule);border-radius:10px;box-shadow:0 10px 24px rgba(0,0,0,.18)}
#pop button{font-family:var(--f-mono);font-weight:700;font-size:.88rem;border:1px solid var(--rule);background:var(--paper);border-radius:6px;padding:.3rem .5rem;cursor:pointer}
#pop button.on{background:var(--ink);color:var(--surface)}

.reading-card{border:1px solid var(--rule);border-radius:10px;padding:10px 12px;background:var(--paper);margin-bottom:8px}
.reading-title{font-weight:700;margin:0 0 6px}
.reading-line{margin:0}

.modal{position:fixed;inset:0;background:rgba(0,0,0,.45);display:flex;align-items:center;justify-content:center;z-index:100}
.modal-box{background:var(--surface);padding:24px;border-radius:12px;display:flex;flex-direction:column;gap:12px;min-width:320px;border:1px solid var(--rule)}
#toast{position:fixed;left:50%;bottom:20px;transform:translateX(-50%);background:var(--ink);color:var(--surface);padding:.55rem 1rem;border-radius:8px;z-index:110}

/* ---------- Aggiunte: classi usate da app.html / app.js ma mancanti ---------- */
.btn:disabled{opacity:.45;cursor:not-allowed}
.btn.mini{padding:.15rem .5rem;font-size:.8rem}

.history-top{display:inline-flex;align-items:center;gap:6px;margin-left:8px;padding-left:10px;border-left:1px solid var(--rule)}
.history-label{font-size:.74rem;text-transform:uppercase;letter-spacing:.08em;color:var(--muted);font-weight:700}
.history-count{font-family:var(--f-mono);font-size:.8rem;color:var(--muted);min-width:42px;text-align:center}

.dg-head{display:flex;align-items:flex-start;justify-content:space-between;gap:10px 16px;flex-wrap:wrap;margin-bottom:10px}
.dg-head h2{margin:0}
.dg-tools{display:flex;flex-wrap:wrap;gap:8px;margin-top:10px}
.progress{display:flex;align-items:center;gap:8px;font-size:.82rem;color:var(--muted);font-weight:700}
.progress .bar{display:inline-block;width:110px;height:8px;border-radius:99px;background:var(--grid);overflow:hidden}
.progress .bar i{display:block;height:100%;background:var(--ok);transition:width .25s}
.progress b{font-family:var(--f-mono);color:var(--ink);min-width:36px;text-align:right}

.board-scroll{overflow:auto}
.cards .lbl{font-size:.74rem;text-transform:uppercase;letter-spacing:.08em;color:var(--muted);font-weight:700;margin-right:4px}
.chip.opt{border-style:dashed}

.tips summary{cursor:pointer;font-weight:700}
.tips dl{margin:10px 0 0;display:grid;gap:4px}
.tips dt{display:flex;align-items:center;gap:8px;font-weight:700;margin-top:8px}
.tips dd{margin:0 0 0 26px;color:var(--muted);font-size:.92rem}

.manager-section{border:1px solid var(--rule);border-radius:12px;background:var(--surface);overflow:hidden}
.manager-summary{display:flex;align-items:center;gap:10px;padding:10px 12px;cursor:pointer;font-weight:700;background:var(--paper)}
.manager-title{font-family:var(--f-display)}
.manager-count{font-family:var(--f-mono);font-size:.78rem;border:1px solid var(--rule);border-radius:99px;padding:0 8px;background:var(--surface)}
.manager-hint{margin-left:auto;font-size:.76rem;font-weight:400;color:var(--muted)}
.manager-content{padding:10px 12px 12px}
.manager-entities{border-left:4px solid var(--ent)}
.manager-relations{border-left:4px solid var(--rel)}
.manager-attributes{border-left:4px solid var(--att)}
.manager-hierarchies{border-left:4px solid var(--gen)}

.drop-name{flex:1 1 auto;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.drop-body input.name{width:100%;font-weight:700}
.sub{font-size:.88rem;color:var(--muted);display:flex;flex-wrap:wrap;align-items:center;gap:8px}
.row{border:1px solid var(--rule);border-radius:10px;padding:8px 10px;display:grid;gap:6px;background:var(--surface)}
.kids{display:flex;flex-wrap:wrap;gap:4px 12px}
.kids label,.participant-grid label{display:inline-flex;align-items:center;gap:5px;font-size:.88rem;color:var(--ink)}
.occ{font-family:var(--f-mono);font-weight:700;color:var(--gen);margin-left:auto}
.empty-list{font-size:.88rem;color:var(--muted);margin:0;padding:6px 2px}

.node.hot rect,.node.hot polygon{stroke-width:4.2}
.att.hot circle.dot{stroke-width:4}
.att.hot text{font-weight:700}
.att.orphan{opacity:.5}


/* Tema scuro: il tema iniziale segue le preferenze del sistema/browser. */
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    color-scheme: dark;
    --paper:#11151d; --surface:#1a202b; --ink:#e8edf6; --muted:#a3aec2; --rule:#374153; --grid:#293243;
    --ent:#7db0ff; --ent-hl:#203b60;
    --att:#76d6a0; --att-hl:#1e4232;
    --rel:#ffb36f; --rel-hl:#50351f;
    --gen:#c4a0ff; --gen-hl:#38294f;
    --focus:#7db0ff; --warn:#ffc66d; --ok:#76d6a0;
  }
}
:root[data-theme="dark"] {
  color-scheme: dark;
  --paper:#11151d; --surface:#1a202b; --ink:#e8edf6; --muted:#a3aec2; --rule:#374153; --grid:#293243;
  --ent:#7db0ff; --ent-hl:#203b60;
  --att:#76d6a0; --att-hl:#1e4232;
  --rel:#ffb36f; --rel-hl:#50351f;
  --gen:#c4a0ff; --gen-hl:#38294f;
  --focus:#7db0ff; --warn:#ffc66d; --ok:#76d6a0;
}
:root[data-theme="light"] { color-scheme: light; }
.custom-card-label { font-size:.78rem; font-weight:700; color:var(--muted); }
.custom-card-input { width:54px; min-width:0; padding:.25rem .35rem; border:1px solid var(--rule); border-radius:6px; background:var(--surface); }
.custom-card-separator { color:var(--muted); margin:0 -6px; }
#diagramPanel:fullscreen { overflow:auto; border:0; border-radius:0; padding:18px; background:var(--paper); }
#diagramPanel:fullscreen .board { min-height:65vh; }
#diagramPanel:fullscreen .board-scroll { max-height:calc(100vh - 260px); }
#diagramPanel:fullscreen .canvas { min-width:0; }
#diagramPanel:fullscreen #dg { max-height:calc(100vh - 280px); }
@media (max-width:700px) {
  .custom-card-input { width:46px; }
  #diagramPanel:fullscreen { padding:10px; }
}