/* =====================================================================
   Drawings · stile condiviso tra la home e tutte le app
   Layout: banco di lavoro — impostazioni a sinistra, risultato a destra
   ===================================================================== */
@import url("https://fonts.googleapis.com/css2?family=Young+Serif&family=IBM+Plex+Sans:wght@400;500;600&family=IBM+Plex+Mono:wght@400;500&display=swap");

:root {
  --bg: #eef0f2;
  --panel: #ffffff;
  --fg: #1d2127;
  --muted: #5c6470;
  --line: #d3d8de;
  --accent: #2c5aa0;
  --accent-soft: #e2eaf6;
  --warn: #a8461f;
  --paper: #ffffff;
  --strip: rgba(44, 90, 160, 0.16);
  --font-display: "Young Serif", Georgia, serif;
  --font-body: "IBM Plex Sans", system-ui, sans-serif;
  --font-mono: "IBM Plex Mono", ui-monospace, monospace;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #15181c; --panel: #1e2228; --fg: #e4e7eb; --muted: #98a1ad; --line: #333a43;
    --accent: #7aa5e6; --accent-soft: #233248; --warn: #e58a62; --paper: #f4f5f6;
    --strip: rgba(122, 165, 230, 0.28);
    color-scheme: dark;
  }
}

*, *::before, *::after { box-sizing: border-box; }
[hidden] { display: none !important; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg); color: var(--fg);
  font-family: var(--font-body); font-size: 14px; line-height: 1.45;
  padding: max(20px, env(safe-area-inset-top, 0px)) max(16px, env(safe-area-inset-right, 0px)) 32px max(16px, env(safe-area-inset-left, 0px));
}
img { max-width: 100%; }
a { color: var(--accent); }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
@media (prefers-reduced-motion: reduce) { * { transition: none !important; animation: none !important; } }

/* ---------- intestazione ---------- */
.app-header { display: flex; flex-wrap: wrap; align-items: baseline; gap: 6px 16px; margin-bottom: 18px; }
.app-header h1 { font-family: var(--font-display); font-weight: 400; font-size: 1.75rem; margin: 0; text-wrap: balance; }
.app-header p { margin: 0; color: var(--muted); max-width: 70ch; }
.app-header .home { font-size: 0.82rem; text-decoration: none; color: var(--muted); }
.app-header .home:hover { color: var(--accent); }

/* ---------- impaginazione ---------- */
.workbench { display: grid; grid-template-columns: 300px minmax(0, 1fr); gap: 20px; align-items: start; }
.workbench > aside {
  display: flex; flex-direction: column; gap: 14px;
  position: sticky; top: 12px; max-height: calc(100vh - 24px); overflow-y: auto; padding-right: 4px;
}
.workbench > .result { display: flex; flex-direction: column; gap: 14px; min-width: 0; }
@media (max-width: 820px) {
  .workbench { grid-template-columns: minmax(0, 1fr); }
  .workbench > aside { position: static; max-height: none; overflow: visible; }
}

/* ---------- gruppi di controlli ---------- */
fieldset { margin: 0; padding: 12px 14px 14px; border: 1px solid var(--line); border-radius: 8px; background: var(--panel); display: flex; flex-direction: column; gap: 10px; min-width: 0; }
legend { padding: 0 6px; margin-left: -6px; font-size: 0.72rem; text-transform: uppercase; letter-spacing: 0.08em; font-weight: 600; color: var(--muted); }
.hint { font-size: 0.8rem; color: var(--muted); margin: 0; }
.dep-off { opacity: 0.45; }

.toggle { display: flex; align-items: center; gap: 8px; font-weight: 500; cursor: pointer; }
.toggle input { width: 16px; height: 16px; accent-color: var(--accent); margin: 0; }

.row { display: grid; grid-template-columns: 1fr auto; gap: 2px 10px; align-items: center; }
.row label { color: var(--muted); font-size: 0.85rem; }
.row output { font-family: var(--font-mono); font-size: 0.8rem; font-variant-numeric: tabular-nums; min-width: 3.5ch; text-align: right; }
.row input[type=range] { grid-column: 1 / -1; width: 100%; accent-color: var(--accent); margin: 0; }

.field { display: grid; grid-template-columns: 1fr auto; align-items: center; gap: 10px; }
.field label { color: var(--muted); font-size: 0.85rem; }
.unit { display: flex; align-items: center; gap: 6px; font-family: var(--font-mono); font-size: 0.8rem; color: var(--muted); }

input[type=number] { width: 78px; font: inherit; font-family: var(--font-mono); font-size: 0.85rem; padding: 3px 6px; border-radius: 6px; border: 1px solid var(--line); background: var(--panel); color: var(--fg); text-align: right; }
select { font: inherit; font-size: 0.85rem; padding: 3px 6px; border-radius: 6px; border: 1px solid var(--line); background: var(--panel); color: var(--fg); max-width: 100%; }
input[type=color] { width: 34px; height: 24px; padding: 0; border: 1px solid var(--line); border-radius: 4px; background: none; cursor: pointer; }

.seg { display: flex; flex-wrap: wrap; gap: 6px; }
.seg label { cursor: pointer; }
.seg input { position: absolute; opacity: 0; pointer-events: none; }
.seg span { display: inline-block; padding: 4px 10px; border-radius: 6px; border: 1px solid var(--line); font-size: 0.82rem; font-weight: 500; }
.seg input:checked + span { background: var(--accent-soft); border-color: var(--accent); color: var(--accent); }
.seg input:disabled + span { opacity: 0.4; cursor: default; }
.seg input:focus-visible + span { outline: 2px solid var(--accent); outline-offset: 2px; }

.inline { display: flex; flex-wrap: wrap; gap: 8px 14px; align-items: center; }
.inline label { display: flex; align-items: center; gap: 6px; font-size: 0.85rem; cursor: pointer; }
.inline input[type=checkbox] { accent-color: var(--accent); margin: 0; }

/* ---------- caricamento file ---------- */
.drop { display: block; border: 1.5px dashed var(--line); border-radius: 8px; padding: 14px; text-align: center; background: var(--panel); cursor: pointer; transition: border-color .15s, background .15s; }
.drop:hover, .drop.over { border-color: var(--accent); background: var(--accent-soft); }
.drop strong { display: block; font-weight: 600; }
.drop span { color: var(--muted); font-size: 0.82rem; }
.drop input { display: none; }
.meta { font-family: var(--font-mono); font-size: 0.75rem; color: var(--muted); overflow-wrap: anywhere; }

/* ---------- pulsanti ---------- */
button { font: inherit; font-size: 0.85rem; font-weight: 500; padding: 6px 12px; border-radius: 6px; border: 1px solid var(--line); background: var(--panel); color: var(--fg); cursor: pointer; }
button:hover:not(:disabled) { border-color: var(--accent); color: var(--accent); }
button:disabled { opacity: 0.5; cursor: default; }
button.primary { background: var(--accent); border-color: var(--accent); color: var(--panel); font-weight: 600; padding: 8px 16px; }
button.primary:hover:not(:disabled) { color: var(--panel); filter: brightness(1.08); }

/* ---------- pannelli ---------- */
.panel { background: var(--panel); border: 1px solid var(--line); border-radius: 8px; padding: 14px 16px; }
.panel h2 { font-family: var(--font-display); font-weight: 400; font-size: 1.1rem; margin: 0 0 8px; }