/* ==========================================================================
   Grafici di funzioni (js/plot.js)
   ========================================================================== */
.pl-svg { display: block; width: 100%; height: auto; color: var(--ink); }
.pl-legend, .pl-info { display: flex; flex-wrap: wrap; gap: 4px 14px; margin-top: 6px; font-size: 13.5px; }
.pl-info { flex-direction: column; gap: 2px; }
.pl-legend span, .pl-info p { display: inline-flex; align-items: center; gap: 6px; margin: 0; font-family: 'SF Mono', ui-monospace, Menlo, monospace; font-size: 13px; color: var(--ink-2); }
.pl-info p { font-family: inherit; font-size: 14px; color: var(--ink); font-weight: 500; }
.pl-legend i, .pl-info i { width: 12px; height: 4px; border-radius: 2px; flex: none; }
.pl-info i { height: 12px; border-radius: 3px; }

/* nella nota */
.nb-graph { margin: 12px 0; padding: 12px 14px 10px; border: 1px solid var(--stroke); border-radius: 14px; background: var(--raised); cursor: pointer; transition: border-color 0.15s; user-select: none; -webkit-user-select: none; }
.nb-graph:hover { border-color: var(--stroke-2); }
.nb-paper .nb-graph { border-color: #ddd; background: #fff; break-inside: avoid; }
.nb-paper .nb-graph .pl-legend span, .nb-paper .nb-graph .pl-info p { color: #1d1b18; }

/* finestra */
.nb-modal.pl-modal { width: min(980px, 100%); max-height: calc(100dvh - 32px); display: flex; flex-direction: column; padding: 0; overflow: hidden; }
.pl-head { display: flex; align-items: center; justify-content: space-between; padding: 14px 18px 8px; }
.pl-head h3 { margin: 0; }
.pl-x { width: 34px; height: 34px; border: 0; border-radius: 10px; background: transparent; color: var(--ink-3); font-size: 16px; cursor: pointer; }
.pl-x:hover { background: var(--fill-2); color: var(--ink); }
.pl-body { display: grid; grid-template-columns: minmax(0, 340px) minmax(0, 1fr); gap: 18px; padding: 4px 18px 12px; overflow: auto; }
@media (max-width: 760px) { .pl-body { grid-template-columns: minmax(0, 1fr); } }
.pl-lab { display: block; margin-bottom: 6px; font-size: 13px; font-weight: 600; color: var(--ink-3); }
.pl-form textarea { width: 100%; box-sizing: border-box; min-height: 104px; padding: 10px 12px; border: 1px solid var(--stroke-2); border-radius: 12px; background: var(--fill); color: var(--ink); font: 500 16px/1.5 'SF Mono', ui-monospace, Menlo, monospace; resize: vertical; outline: none; }
.pl-form textarea:focus { border-color: var(--ink-3); }
.pl-ex { display: flex; flex-wrap: wrap; gap: 6px; margin: 10px 0; }
.pl-ex button { padding: 5px 10px; border: 1px solid var(--stroke-2); border-radius: 999px; background: transparent; color: var(--ink-2); font: 500 12.5px/1.2 'SF Mono', ui-monospace, Menlo, monospace; cursor: pointer; }
.pl-ex button:hover { background: var(--fill-2); color: var(--ink); }
.pl-range { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; }
.pl-range label { display: grid; gap: 3px; font-size: 12px; color: var(--ink-3); }
.pl-range input { width: 100%; box-sizing: border-box; height: 34px; padding: 0 10px; border: 1px solid var(--stroke-2); border-radius: 9px; background: var(--fill); color: var(--ink); font: inherit; font-size: 16px; }
.pl-err { margin: 10px 0 0; padding: 8px 10px; border-radius: 9px; background: var(--ko-fill, rgba(255, 69, 58, 0.12)); color: var(--ko); font-size: 13.5px; }
.pl-err[hidden] { display: none; }
.pl-tip { margin: 10px 0 0; font-size: 12.5px; color: var(--ink-3); line-height: 1.5; }
.pl-prev { min-width: 0; padding: 10px; border: 1px solid var(--stroke); border-radius: 14px; background: var(--raised); }
.pl-empty { margin: 60px 0; text-align: center; color: var(--ink-3); }
.pl-foot { display: flex; align-items: center; gap: 8px; padding: 10px 18px 14px; border-top: 1px solid var(--stroke); }
.pl-grow { flex: 1; }
.pl-foot .danger { color: var(--ko); }