/* Comet Icon Composer — stile dell'interfaccia
   Concetto: un banco di lavoro nero. L'icona è l'unico oggetto luminoso;
   tutto il resto è grafite discreta, con un solo accento "ghiaccio di cometa"
   per gli stati attivi. Telefono prima, poi tablet e desktop. */

:root {
  color-scheme: dark;
  --bg: #000000;
  --surface: #0d0d0f;
  --surface-2: #151518;
  --surface-3: #1f1f23;
  --surface-4: #2a2a2f;
  --line: rgba(255, 255, 255, 0.07);
  --line-2: rgba(255, 255, 255, 0.13);
  --text: #f3f3f5;
  --text-2: #a6a6ae;
  --text-3: #6e6e76;
  --accent: #b9d0fb;
  --accent-ink: #0a1324;
  --accent-soft: rgba(185, 208, 251, 0.14);
  --ok: #86e0ae;
  --warn: #f5d28a;
  --danger: #ff7a72;
  --glass: rgba(24, 24, 28, 0.66);
  --glass-line: rgba(255, 255, 255, 0.09);

  --font: "Google Sans Text", "Google Sans", system-ui, Roboto, "Segoe UI", "Helvetica Neue", sans-serif;
  --font-display: "Google Sans Display", "Google Sans", system-ui, Roboto, "Segoe UI", sans-serif;
  --font-mono: "Roboto Mono", ui-monospace, "SF Mono", Menlo, monospace;

  --fs-cap: 11px;
  --fs-s: 12.5px;
  --fs-m: 14px;
  --fs-l: 16px;
  --fs-xl: 22px;

  --r-s: 9px;
  --r-m: 13px;
  --r-l: 18px;

  --ease: cubic-bezier(0.2, 0.8, 0.2, 1);
  --t-fast: 140ms;
  --t-med: 240ms;

  --gutter-l: max(16px, env(safe-area-inset-left, 0px));
  --gutter-r: max(16px, env(safe-area-inset-right, 0px));
  --stage: 340px;
}

* { box-sizing: border-box; -webkit-tap-highlight-color: transparent; }
html { height: 100%; padding-top: env(safe-area-inset-top, 0px); padding-bottom: env(safe-area-inset-bottom, 0px); background: var(--bg); }
body {
  margin: 0; height: 100%; overflow: hidden;
  touch-action: manipulation; -webkit-touch-callout: none;
  -webkit-user-select: none; user-select: none; -webkit-text-size-adjust: 100%;
  background: var(--bg); color: var(--text);
  font: 400 var(--fs-m)/1.4 var(--font);
  -webkit-font-smoothing: antialiased;
  overscroll-behavior: none;
}
button, input, select, textarea { font: inherit; color: inherit; }
input, textarea { -webkit-user-select: text; user-select: text; font-size: max(16px, 1em); }
button { cursor: pointer; border: 0; background: none; padding: 0; }
button:disabled { cursor: default; opacity: 0.35; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; border-radius: 6px; }
[hidden] { display: none !important; }
.ic { width: 22px; height: 22px; flex: none; fill: none; stroke: currentColor; stroke-width: 1.75; stroke-linecap: round; stroke-linejoin: round; }
.ic.s { width: 18px; height: 18px; }
.num { font-variant-numeric: tabular-nums; }
.sr { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }

#app { height: 100%; position: relative; }
.screen { position: absolute; inset: 0; display: flex; flex-direction: column; min-height: 0; }

/* ---------------- Pulsanti ---------------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  min-height: 44px; padding: 0 16px; border-radius: 999px;
  background: var(--surface-3); color: var(--text); font-weight: 500; font-size: var(--fs-m);
  transition: background var(--t-fast), transform var(--t-fast) var(--ease);
  white-space: nowrap;
}
.btn:active:not(:disabled) { transform: scale(0.97); }
.btn.primary { background: var(--text); color: #000; }
.btn.accent { background: var(--accent); color: var(--accent-ink); }
.btn.ghost { background: transparent; color: var(--text-2); }
.btn.danger { background: rgba(255, 122, 114, 0.14); color: var(--danger); }
.btn.sm { min-height: 36px; padding: 0 12px; font-size: var(--fs-s); }
.btn.block { width: 100%; }
.icon-btn {
  width: 44px; height: 44px; border-radius: 999px; display: inline-grid; place-items: center;
  color: var(--text); transition: background var(--t-fast), transform var(--t-fast) var(--ease);
}
.icon-btn:active:not(:disabled) { background: var(--surface-3); transform: scale(0.94); }

/* ---------------- Galleria progetti ---------------- */
.home { overflow: hidden; }
.home-scroll { flex: 1; overflow-y: auto; overflow-x: hidden; padding: 8px var(--gutter-r) 32px var(--gutter-l); -webkit-overflow-scrolling: touch; }
.brand { display: flex; align-items: center; gap: 10px; padding: 14px 0 6px; }
.brand-mark { width: 30px; height: 30px; flex: none; }
.brand-name { font: 500 var(--fs-l)/1.1 var(--font-display); letter-spacing: 0.01em; }
.brand-name b { font-weight: 500; color: var(--text-2); }
.home-hero { padding: 26px 0 18px; }
.home-hero h1 { margin: 0 0 6px; font: 400 28px/1.15 var(--font-display); letter-spacing: -0.01em; text-wrap: balance; }
.home-hero p { margin: 0; color: var(--text-2); max-width: 40ch; text-wrap: pretty; }
.quick { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin: 18px 0 26px; }
.quick-card {
  display: flex; flex-direction: column; align-items: flex-start; gap: 18px; text-align: left;
  padding: 14px; border-radius: var(--r-l); background: var(--surface-2); border: 1px solid var(--line);
  min-height: 104px; transition: transform var(--t-fast) var(--ease), background var(--t-fast);
}
.quick-card:active { transform: scale(0.98); background: var(--surface-3); }
.quick-card .ic { color: var(--accent); }
.quick-card strong { display: block; font-weight: 500; }
.quick-card span { display: block; color: var(--text-3); font-size: var(--fs-s); margin-top: 2px; }
.quick-card.wide { grid-column: 1 / -1; flex-direction: row; align-items: center; min-height: 0; gap: 12px; }
.section-label { font-size: var(--fs-cap); letter-spacing: 0.08em; text-transform: uppercase; color: var(--text-3); margin: 0 0 10px; display: flex; justify-content: space-between; align-items: baseline; }
.grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(148px, 1fr)); gap: 14px 12px; }
.card { position: relative; min-width: 0; }
.card-open { display: block; width: 100%; text-align: left; }
.card-thumb {
  aspect-ratio: 1; width: 100%; max-width: 100%; border-radius: var(--r-l); background: var(--surface-2);
  border: 1px solid var(--line); display: grid; place-items: center; overflow: hidden;
  transition: transform var(--t-fast) var(--ease);
}
.card-open:active .card-thumb { transform: scale(0.97); }
.card-thumb img { width: 72%; height: 72%; object-fit: contain; }
.card-meta { display: flex; align-items: flex-start; justify-content: space-between; gap: 4px; padding: 8px 2px 0; }
.card-name { font-weight: 500; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.card-date { color: var(--text-3); font-size: var(--fs-s); }
.card-more { margin: -6px -10px 0 0; color: var(--text-2); }
.empty { padding: 28px 16px; text-align: center; color: var(--text-3); border: 1px dashed var(--line-2); border-radius: var(--r-l); }
.storage { margin-top: 28px; color: var(--text-3); font-size: var(--fs-s); display: flex; flex-direction: column; gap: 6px; }
.meter { height: 4px; border-radius: 4px; background: var(--surface-3); overflow: hidden; }
.meter i { display: block; height: 100%; background: var(--text-2); border-radius: 4px; }
.notice { display: flex; gap: 10px; align-items: flex-start; padding: 12px 14px; border-radius: var(--r-m); background: rgba(245, 210, 138, 0.1); color: var(--warn); font-size: var(--fs-s); margin-bottom: 14px; }

/* ---------------- Editor: struttura ---------------- */
.editor {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  grid-template-rows: auto auto auto auto auto minmax(0, 1fr) auto;
  grid-template-areas: "top" "variants" "stage" "bgbar" "layers" "panel" "tabs";
}
.topbar {
  grid-area: top; display: flex; align-items: center; gap: 2px;
  padding: 4px calc(var(--gutter-r) - 8px) 0 calc(var(--gutter-l) - 8px); min-height: 52px;
}
.title-btn { flex: 1; min-width: 0; display: flex; flex-direction: column; align-items: flex-start; padding: 4px 6px; border-radius: 10px; text-align: left; }
.title-btn .t { font-weight: 500; font-size: var(--fs-l); max-width: 100%; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.save-state { font-size: var(--fs-cap); color: var(--text-3); display: flex; align-items: center; gap: 5px; }
.save-state i { width: 6px; height: 6px; border-radius: 50%; background: var(--text-3); }
.save-state[data-s="saved"] i { background: var(--ok); }
.save-state[data-s="saving"] i { background: var(--accent); animation: pulse 900ms infinite alternate; }
.save-state[data-s="error"] { color: var(--danger); }
.save-state[data-s="error"] i { background: var(--danger); }
@keyframes pulse { to { opacity: 0.3; } }
.export-btn { margin-left: 4px; }

.variants { grid-area: variants; display: flex; align-items: center; gap: 8px; padding: 4px var(--gutter-r) 8px var(--gutter-l); }
.seg {
  display: flex; flex: 1; min-width: 0; padding: 3px; gap: 2px; border-radius: 999px;
  background: var(--surface-2); border: 1px solid var(--line);
}
.seg button {
  flex: 1; min-width: 0; min-height: 34px; border-radius: 999px; font-size: var(--fs-s); font-weight: 500;
  color: var(--text-2); padding: 0 8px; display: inline-flex; align-items: center; justify-content: center; gap: 6px;
  transition: background var(--t-fast), color var(--t-fast);
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
.seg button[aria-pressed="true"] { background: var(--text); color: #000; }
.seg .dot { width: 10px; height: 10px; border-radius: 50%; flex: none; border: 1px solid rgba(255,255,255,.3); }
.seg .dot.dark { background: #111; }
.seg .dot.light { background: #f2f2f2; border-color: rgba(0,0,0,.25); }
.seg .dot.transparent { background: conic-gradient(#888 25%, #ddd 0 50%, #888 0 75%, #ddd 0) 0 0 / 6px 6px; }
.seg.sm button { min-height: 32px; font-size: var(--fs-s); }

/* ---------------- Area di lavoro ---------------- */
.stage-wrap { grid-area: stage; display: flex; justify-content: center; padding: 0 var(--gutter-r) 0 var(--gutter-l); }
.stage {
  position: relative; width: var(--stage); height: var(--stage); max-width: 100%;
  overflow: hidden; background: transparent;
  touch-action: none; user-select: none; -webkit-user-select: none;
  transition: width var(--t-med) var(--ease), height var(--t-med) var(--ease);
}
.stage canvas { position: absolute; inset: 0; width: 100%; height: 100%; display: block; }
.stage-chip {
  position: absolute; display: flex; align-items: center; gap: 2px; padding: 3px;
  border-radius: 999px; background: var(--glass); border: 1px solid var(--glass-line);
  backdrop-filter: blur(14px) saturate(140%); -webkit-backdrop-filter: blur(14px) saturate(140%);
  box-shadow: inset 0 1px 0 rgba(255,255,255,0.06);
}
.stage-chip button { min-width: 36px; height: 36px; border-radius: 999px; display: inline-grid; place-items: center; color: var(--text); font-size: var(--fs-cap); font-weight: 500; padding: 0 6px; }
.stage-chip button[aria-pressed="true"] { background: rgba(255,255,255,0.16); }
.stage-chip button:active { background: rgba(255,255,255,0.12); }
.chip-tl { left: 10px; top: 10px; }
.chip-tr { right: 10px; top: 10px; }
.chip-bl { left: 10px; bottom: 10px; }
.chip-br { right: 10px; bottom: 10px; }
.chip-zoom .z { min-width: 46px; font-variant-numeric: tabular-nums; }
.hold-btn { padding: 0 12px !important; gap: 6px; display: inline-flex !important; }
.stage-hint {
  position: absolute; left: 50%; top: 54px; transform: translateX(-50%);
  padding: 6px 12px; border-radius: 999px; background: var(--glass); border: 1px solid var(--glass-line);
  backdrop-filter: blur(14px); -webkit-backdrop-filter: blur(14px);
  font-size: var(--fs-s); white-space: nowrap; pointer-events: none;
}
.busy { position: absolute; right: 12px; bottom: 56px; font-size: var(--fs-cap); color: var(--text-2); padding: 4px 10px; border-radius: 999px; background: var(--glass); }

/* ---------------- Livelli ---------------- */
.layers { grid-area: layers; display: flex; align-items: center; gap: 8px; padding: 10px 0 6px; min-width: 0; }
.layer-scroll { display: flex; gap: 8px; overflow-x: auto; overflow-y: hidden; padding: 2px var(--gutter-r) 2px var(--gutter-l); scrollbar-width: none; flex: 1; min-width: 0; overscroll-behavior-x: contain; }
.layer-scroll::-webkit-scrollbar { display: none; }
.layer-chip {
  flex: none; display: flex; align-items: center; gap: 8px; height: 44px; padding: 0 6px 0 4px; border-radius: 12px;
  background: var(--surface-2); border: 1px solid var(--line); max-width: 170px;
  transition: background var(--t-fast), border-color var(--t-fast);
}
.layer-chip[aria-selected="true"] { background: var(--surface-3); border-color: var(--line-2); box-shadow: inset 0 0 0 1px rgba(185,208,251,0.35); }
.layer-chip.hidden-layer { opacity: 0.45; }
.layer-chip canvas { width: 34px; height: 34px; border-radius: 8px; background: var(--surface-4); flex: none; }
.layer-chip .ln { font-size: var(--fs-s); font-weight: 500; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; max-width: 84px; }
.layer-chip .lm { width: 30px; height: 36px; display: grid; place-items: center; color: var(--text-2); border-radius: 8px; }
.add-chip { flex: none; height: 44px; padding: 0 14px 0 10px; border-radius: 12px; display: inline-flex; align-items: center; gap: 6px; background: transparent; border: 1px dashed var(--line-2); color: var(--text-2); font-size: var(--fs-s); font-weight: 500; }

/* ---------------- Pannello strumenti ---------------- */
.panel { grid-area: panel; min-height: 0; overflow-y: auto; overflow-x: hidden; padding: 6px var(--gutter-r) 20px var(--gutter-l); overscroll-behavior: contain; -webkit-overflow-scrolling: touch; }
.panel.collapsed { display: none; }
.pgroup { padding: 10px 0 14px; border-bottom: 1px solid var(--line); display: flex; flex-direction: column; gap: 14px; }
.pgroup:last-child { border-bottom: 0; }
.ghead { display: flex; align-items: center; justify-content: space-between; gap: 8px; min-height: 30px; }
.ghead h3 { margin: 0; font-size: var(--fs-cap); font-weight: 500; letter-spacing: 0.08em; text-transform: uppercase; color: var(--text-3); }
.ghead .btn { min-height: 30px; padding: 0 10px; font-size: var(--fs-cap); }
.row { display: flex; align-items: center; gap: 10px; min-width: 0; }
.row.wrap { flex-wrap: wrap; }
.row > * { min-width: 0; }
.hint { color: var(--text-3); font-size: var(--fs-s); line-height: 1.45; margin: 0; }
.hint b { color: var(--text-2); font-weight: 500; }
.status-line { font-size: var(--fs-s); color: var(--text-2); display: flex; gap: 8px; align-items: center; }
.status-line .ok { color: var(--ok); }
.callout { padding: 12px 14px; border-radius: var(--r-m); background: var(--accent-soft); color: var(--text); font-size: var(--fs-s); display: flex; gap: 10px; align-items: flex-start; }
.callout .ic { color: var(--accent); }
.empty-panel { padding: 22px 6px; text-align: center; color: var(--text-2); display: flex; flex-direction: column; gap: 14px; align-items: center; }

details.adv { border-radius: var(--r-m); background: var(--surface); border: 1px solid var(--line); }
details.adv > summary { list-style: none; cursor: pointer; min-height: 44px; display: flex; align-items: center; justify-content: space-between; padding: 0 14px; color: var(--text-2); font-size: var(--fs-s); font-weight: 500; }
details.adv > summary::-webkit-details-marker { display: none; }
details.adv > summary .ic { transition: transform var(--t-fast); }
details.adv[open] > summary .ic { transform: rotate(180deg); }
details.adv > .adv-body { padding: 4px 14px 16px; display: flex; flex-direction: column; gap: 14px; }

/* Slider touch: trascinamento relativo, tocco per saltare, valore digitabile */
.sl { display: flex; flex-direction: column; gap: 6px; touch-action: pan-y; user-select: none; -webkit-user-select: none; }
.sl-head { display: flex; justify-content: space-between; align-items: center; min-height: 22px; }
.sl-label { font-size: var(--fs-s); color: var(--text-2); }
.sl-val { font-size: var(--fs-s); font-variant-numeric: tabular-nums; color: var(--text); padding: 3px 8px; margin-right: -8px; border-radius: 8px; min-width: 52px; text-align: right; }
.sl-val:active { background: var(--surface-3); }
.sl-input { width: 72px; text-align: right; font-size: var(--fs-s); padding: 3px 8px; border-radius: 8px; border: 1px solid var(--accent); background: var(--surface-3); font-variant-numeric: tabular-nums; }
.sl-track { position: relative; height: 30px; cursor: pointer; }
.sl-rail { position: absolute; left: 0; right: 0; top: 13px; height: 4px; border-radius: 4px; background: var(--surface-4); }
.sl-fill { position: absolute; top: 13px; height: 4px; border-radius: 4px; background: var(--accent); }
.sl-zero { position: absolute; top: 9px; width: 2px; height: 12px; background: var(--line-2); border-radius: 2px; transform: translateX(-1px); }
.sl-thumb {
  position: absolute; top: 3px; width: 24px; height: 24px; margin-left: -12px; border-radius: 50%;
  background: #fff; box-shadow: 0 1px 4px rgba(0,0,0,0.5), 0 0 0 0.5px rgba(0,0,0,0.2);
  transition: transform var(--t-fast) var(--ease);
}
.sl.active .sl-thumb { transform: scale(1.18); }
.sl.disabled { opacity: 0.4; pointer-events: none; }

.switch-row { display: flex; align-items: center; justify-content: space-between; gap: 12px; min-height: 36px; }
.switch-row label { flex: 1; font-size: var(--fs-m); }
.switch { position: relative; width: 48px; height: 28px; border-radius: 999px; background: var(--surface-4); flex: none; transition: background var(--t-fast); }
.switch::after { content: ""; position: absolute; left: 3px; top: 3px; width: 22px; height: 22px; border-radius: 50%; background: #d8d8de; transition: transform var(--t-fast) var(--ease), background var(--t-fast); }
.switch[aria-checked="true"] { background: var(--accent); }
.switch[aria-checked="true"]::after { transform: translateX(20px); background: #fff; }

.color-field { display: flex; align-items: center; gap: 10px; min-height: 44px; padding: 0 12px 0 6px; border-radius: 12px; background: var(--surface-2); border: 1px solid var(--line); flex: 1; min-width: 0; text-align: left; }
.color-field .sw { width: 32px; height: 32px; border-radius: 9px; flex: none; box-shadow: inset 0 0 0 1px rgba(255,255,255,0.15); }
.color-field .cf-l { font-size: var(--fs-cap); color: var(--text-3); display: block; }
.color-field .cf-v { font-family: var(--font-mono); font-size: var(--fs-s); }

.chips { display: flex; flex-wrap: wrap; gap: 8px; }
.chip {
  min-height: 36px; padding: 0 12px; border-radius: 999px; background: var(--surface-2); border: 1px solid var(--line);
  font-size: var(--fs-s); color: var(--text-2); display: inline-flex; align-items: center; gap: 6px;
}
.chip[aria-pressed="true"] { background: var(--text); color: #000; border-color: transparent; }
.tool-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 8px; }
.tool {
  display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 6px; min-height: 64px; padding: 8px 4px;
  border-radius: var(--r-m); background: var(--surface-2); border: 1px solid var(--line); font-size: var(--fs-cap); color: var(--text-2); text-align: center;
}
.tool:active { background: var(--surface-3); }
.tool[aria-pressed="true"] { border-color: var(--accent); color: var(--text); background: var(--accent-soft); }
.tool .ic { color: var(--text); }

.preset-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 10px; }
.preset { display: flex; flex-direction: column; align-items: center; gap: 6px; padding: 8px 4px 10px; border-radius: var(--r-m); background: var(--surface-2); border: 1px solid var(--line); min-width: 0; }
.preset canvas { width: 100%; max-width: 92px; aspect-ratio: 1; border-radius: 12px; }
.preset strong { font-size: var(--fs-s); font-weight: 500; }
.preset:active { background: var(--surface-3); }

.bg-swatches { display: flex; gap: 10px; overflow-x: auto; padding: 2px; scrollbar-width: none; }
.bg-swatches::-webkit-scrollbar { display: none; }
.bg-sw { flex: none; display: flex; flex-direction: column; align-items: center; gap: 4px; font-size: var(--fs-cap); color: var(--text-3); }
.bg-sw i { width: 44px; height: 44px; border-radius: 13px; display: block; box-shadow: inset 0 0 0 1px rgba(255,255,255,0.12); }
.bg-sw[aria-pressed="true"] i { box-shadow: 0 0 0 2px var(--bg), 0 0 0 3.5px var(--accent); }

.text-input {
  width: 100%; min-height: 46px; padding: 0 14px; border-radius: 12px; border: 1px solid var(--line-2);
  background: var(--surface-2); font-size: var(--fs-l); outline: none;
}
.text-input:focus { border-color: var(--accent); }

/* ---------------- Barra schede ---------------- */
.tabbar {
  grid-area: tabs; display: grid; grid-template-columns: repeat(5, minmax(0, 1fr));
  padding: 6px max(4px, env(safe-area-inset-right, 0px)) 6px max(4px, env(safe-area-inset-left, 0px));
  border-top: 1px solid var(--line); background: var(--bg);
}
.tab { display: flex; flex-direction: column; align-items: center; gap: 3px; padding: 2px 0; color: var(--text-3); font-size: 11px; font-weight: 500; min-width: 0; }
.tab .pill { width: 52px; height: 30px; border-radius: 999px; display: grid; place-items: center; transition: background var(--t-fast); }
.tab[aria-selected="true"] { color: var(--text); }
.tab[aria-selected="true"] .pill { background: var(--surface-3); }
.tab span:last-child { max-width: 100%; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

/* ---------------- Fogli (bottom sheet) ---------------- */
.scrim { position: fixed; inset: 0; background: rgba(0,0,0,0.55); z-index: 40; opacity: 0; transition: opacity var(--t-med); }
.scrim.on { opacity: 1; }
.sheet {
  position: fixed; left: 0; right: 0; bottom: 0; z-index: 41;
  max-height: calc(100% - 24px - env(safe-area-inset-top, 0px)); display: flex; flex-direction: column;
  background: var(--surface); border-top: 1px solid var(--line-2); border-radius: 22px 22px 0 0;
  padding-bottom: env(safe-area-inset-bottom, 0px);
  transform: translateY(100%); transition: transform var(--t-med) var(--ease);
  box-shadow: 0 -20px 60px rgba(0,0,0,0.6);
}
.sheet.on { transform: none; }
.sheet-handle { width: 100%; height: 22px; display: grid; place-items: center; flex: none; touch-action: none; }
.sheet-handle::before { content: ""; width: 36px; height: 4px; border-radius: 4px; background: var(--surface-4); }
.sheet-head { display: flex; align-items: center; justify-content: space-between; gap: 8px; padding: 0 calc(var(--gutter-r) - 8px) 6px var(--gutter-l); flex: none; }
.sheet-head h2 { margin: 0; font: 500 var(--fs-l)/1.2 var(--font-display); }
.sheet-body { overflow-y: auto; overflow-x: hidden; padding: 4px var(--gutter-r) 16px var(--gutter-l); display: flex; flex-direction: column; gap: 14px; overscroll-behavior: contain; }
.sheet-actions { display: flex; gap: 10px; padding: 10px var(--gutter-r) 14px var(--gutter-l); flex: none; border-top: 1px solid var(--line); }
.sheet-actions .btn { flex: 1; }
.menu { display: flex; flex-direction: column; }
.menu button { display: flex; align-items: center; gap: 14px; min-height: 52px; padding: 0 4px; text-align: left; border-bottom: 1px solid var(--line); font-size: var(--fs-m); }
.menu button:last-child { border-bottom: 0; }
.menu button .ic { color: var(--text-2); }
.menu button.danger { color: var(--danger); }
.menu button.danger .ic { color: var(--danger); }
.menu button small { display: block; color: var(--text-3); font-size: var(--fs-s); }

/* Selettore colore */
.cp { display: flex; flex-direction: column; gap: 14px; }
.cp-sv { position: relative; width: 100%; aspect-ratio: 1.6; max-height: 240px; border-radius: 14px; overflow: hidden; touch-action: none; }
.cp-sv canvas { width: 100%; height: 100%; display: block; }
.cp-knob { position: absolute; width: 26px; height: 26px; margin: -13px 0 0 -13px; border-radius: 50%; border: 3px solid #fff; box-shadow: 0 1px 6px rgba(0,0,0,0.6); pointer-events: none; }
.cp-hue { position: relative; height: 30px; border-radius: 999px; touch-action: none; background: linear-gradient(90deg, #f00, #ff0, #0f0, #0ff, #00f, #f0f, #f00); }
.cp-hue .cp-knob { top: 15px; }
.cp-row { display: flex; gap: 10px; align-items: center; }
.cp-preview { width: 46px; height: 46px; border-radius: 12px; flex: none; box-shadow: inset 0 0 0 1px rgba(255,255,255,0.15); }
.cp-hex { flex: 1; font-family: var(--font-mono); text-transform: uppercase; }
.cp-sw { display: grid; grid-template-columns: repeat(9, minmax(0, 1fr)); gap: 8px; }
.cp-sw button { aspect-ratio: 1; border-radius: 9px; box-shadow: inset 0 0 0 1px rgba(255,255,255,0.14); }

/* Esportazione e confronto */
.exp-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 10px; }
.exp-card { display: flex; flex-direction: column; gap: 6px; align-items: center; padding: 10px 6px; border-radius: var(--r-m); background: var(--surface-2); border: 1px solid var(--line); min-width: 0; }
.exp-card[aria-pressed="true"] { border-color: var(--accent); background: var(--accent-soft); }
.exp-card canvas { width: 100%; max-width: 96px; aspect-ratio: 1; }
.exp-card span { font-size: var(--fs-s); font-weight: 500; }
.checker { background: conic-gradient(#3a3a3e 25%, #26262a 0 50%, #3a3a3e 0 75%, #26262a 0) 0 0 / 14px 14px; border-radius: 12px; }
.results { display: flex; flex-direction: column; gap: 8px; }
.result { display: flex; gap: 10px; align-items: center; font-size: var(--fs-s); padding: 10px 12px; border-radius: 12px; background: var(--surface-2); }
.result .ok { color: var(--ok); }
.result .bad { color: var(--danger); }
.result .fn { font-family: var(--font-mono); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; flex: 1; min-width: 0; }
.cmp-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 10px; }
.cmp-cell { display: flex; flex-direction: column; gap: 6px; align-items: center; min-width: 0; }
.cmp-cell canvas { width: 100%; aspect-ratio: 1; border-radius: 14px; }
.cmp-cell[aria-current="true"] span { color: var(--accent); }
.cmp-cell span { font-size: var(--fs-s); color: var(--text-2); }
.home-mock { border-radius: 18px; padding: 18px 12px; display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 16px 8px; justify-items: center; }
.home-mock canvas { width: 100%; max-width: 64px; aspect-ratio: 1; }
.bd-row { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 8px; }
.bd-row canvas { width: 100%; aspect-ratio: 1; border-radius: 12px; }

/* Toast */
.toasts { position: fixed; left: 0; right: 0; bottom: calc(84px + env(safe-area-inset-bottom, 0px)); z-index: 60; display: flex; flex-direction: column; align-items: center; gap: 8px; pointer-events: none; padding: 0 16px; }
.toast {
  max-width: min(420px, 100%); padding: 11px 16px; border-radius: 14px; font-size: var(--fs-s);
  background: rgba(36, 36, 41, 0.92); border: 1px solid var(--line-2); color: var(--text);
  backdrop-filter: blur(16px); -webkit-backdrop-filter: blur(16px);
  box-shadow: 0 10px 30px rgba(0,0,0,0.5);
  animation: toastIn var(--t-med) var(--ease);
  display: flex; gap: 10px; align-items: center; pointer-events: auto;
}
.toast.ok .ic { color: var(--ok); }
.toast.err { border-color: rgba(255,122,114,0.4); }
.toast.err .ic { color: var(--danger); }
.toast .act { color: var(--accent); font-weight: 500; margin-left: 6px; }
@keyframes toastIn { from { opacity: 0; transform: translateY(8px); } }

/* ---------------- Barra rapida del colore di sfondo ---------------- */
.bgbar { grid-area: bgbar; display: flex; align-items: center; gap: 10px; padding: 10px 0 0; min-width: 0; }
.bgbar-label { flex: none; padding-left: var(--gutter-l); font-size: var(--fs-cap); letter-spacing: 0.08em; text-transform: uppercase; color: var(--text-3); }
.bgbar-scroll { display: flex; align-items: center; gap: 10px; overflow-x: auto; overflow-y: hidden; padding: 4px var(--gutter-r) 4px 4px; scrollbar-width: none; flex: 1; min-width: 0; overscroll-behavior-x: contain; scroll-snap-type: x proximity; }
.bgbar-scroll::-webkit-scrollbar { display: none; }
.sw-btn {
  flex: none; width: 38px; height: 38px; border-radius: 50%; scroll-snap-align: center;
  box-shadow: inset 0 0 0 1px rgba(255,255,255,0.16);
  transition: transform var(--t-fast) var(--ease), box-shadow var(--t-fast);
  display: inline-grid; place-items: center; color: var(--text);
}
.sw-btn:active { transform: scale(0.9); }
.sw-btn[aria-pressed="true"] { box-shadow: 0 0 0 2px var(--bg), 0 0 0 4px var(--text); }
.sw-custom { position: sticky; left: 0; z-index: 1; box-shadow: 0 0 0 5px var(--bg), inset 0 0 0 1px rgba(255,255,255,0.16); background: conic-gradient(from 0deg, #ff3b30, #ffcc00, #34c759, #00c7be, #007aff, #af52de, #ff2d55, #ff3b30); }
.sw-custom .ic { color: #fff; filter: drop-shadow(0 1px 1px rgba(0,0,0,0.5)); }
.sw-none { background: var(--surface-3); }
.from-img { border-radius: 12px; }
.stage.compact .hold-btn span, .stage.compact .chip-zoom [aria-label="Riduci"], .stage.compact .chip-zoom [aria-label="Ingrandisci"] { display: none !important; }
.stage.compact .chip-bl { left: 4px; bottom: 4px; }
.stage.compact .chip-br { right: 4px; bottom: 4px; }
.stage.compact .hold-btn { padding: 0 !important; width: 36px; justify-content: center; }
.bgbar-sep { flex: none; width: 1px; height: 26px; background: var(--line-2); }

/* ---------------- Tablet verticale (iPad) ---------------- */
@media (min-width: 600px) {
  .topbar, .variants { max-width: 760px; width: 100%; justify-self: center; }
  .bgbar, .layers { max-width: 760px; width: 100%; justify-self: center; }
  .panel > div { max-width: 760px; margin: 0 auto; }
  .tabbar { justify-self: stretch; }
  .tabbar .tab { max-width: 140px; justify-self: center; width: 100%; }
  .sw-btn { width: 42px; height: 42px; }
  .layer-chip { height: 48px; }
  .seg button { min-height: 38px; }
  .chip { min-height: 40px; }
  .home-inner { max-width: 760px; margin: 0 auto; }
  .grid { grid-template-columns: repeat(auto-fill, minmax(168px, 1fr)); }
  /* fogli come finestre centrate */
  .sheet { left: 50%; right: auto; bottom: 50%; width: min(560px, 92vw); border-radius: 22px; border: 1px solid var(--line-2); transform: translate(-50%, 60%); opacity: 0; transition: transform var(--t-med) var(--ease), opacity var(--t-med); max-height: 86vh; padding-bottom: 0; }
  .sheet.on { transform: translate(-50%, 50%); opacity: 1; }
  .sheet-handle { visibility: hidden; height: 14px; }
}
@media (min-width: 700px) and (max-width: 1179px) and (orientation: portrait) {
  /* pannello su due colonne: più controlli visibili senza scorrere */
  .panel > div { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); column-gap: 32px; align-items: start; }
  .panel > div > .pgroup:only-child, .panel .empty-panel { grid-column: 1 / -1; }
}

/* ---------------- Tablet orizzontale e desktop ---------------- */
@media (min-width: 900px) and (orientation: landscape), (min-width: 1180px) {
  .editor {
    grid-template-columns: minmax(0, 1fr) 380px;
    grid-template-rows: auto auto auto minmax(0, 1fr) auto;
    grid-template-areas: "top top" "variants layers" "stage tabs" "stage panel" "bgbar panel";
  }
  .topbar, .variants, .bgbar, .layers { max-width: none; }
  .bgbar { padding: 6px 0 calc(16px + env(safe-area-inset-bottom, 0px)); justify-self: center; max-width: 720px; }
  .stage-wrap { align-items: center; }
  .layers { border-left: 1px solid var(--line); padding: 4px 0 8px; }
  .tabbar { border-top: 0; border-left: 1px solid var(--line); border-bottom: 1px solid var(--line); padding: 6px 8px; }
  .tabbar .tab { max-width: none; }
  .panel { border-left: 1px solid var(--line); padding: 8px 18px 24px; }
  .panel > div { display: block; max-width: none; }
  .toasts { bottom: 28px; }
  .home-scroll { padding-left: max(40px, env(safe-area-inset-left)); padding-right: max(40px, env(safe-area-inset-right)); }
  .home-inner { max-width: 1040px; margin: 0 auto; }
  .quick { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .quick-card.wide { grid-column: auto; flex-direction: column; align-items: flex-start; min-height: 104px; gap: 18px; }
}
@media (min-width: 1180px) {
  .editor { grid-template-columns: minmax(0, 1fr) 420px; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { transition-duration: 1ms !important; animation-duration: 1ms !important; }
}