/* =========================================================
   Nekoh Generatore QR — stili della pagina
   Solo token del design system (theme.css): il tema chiaro/scuro propaga da solo.
   Mobile first: anteprima in alto, controlli sotto; da 900px due colonne con
   l'anteprima che resta in vista mentre si scorrono i controlli.
   ========================================================= */

.qr-shell { width: min(1100px, 100%); }
.qr-page { gap: 18px; }

.qr-privacy {
    margin: 0;
    padding: 10px 14px;
    border: 1px solid var(--success-border);
    border-radius: var(--radius-md);
    background: var(--success-soft);
    color: var(--text-primary);
    font-size: 0.9rem;
}

.qr-app {
    display: grid;
    gap: 20px;
    align-items: start;
    margin-top: 6px;
}
@media (min-width: 900px) {
    .qr-app { grid-template-columns: minmax(320px, 440px) minmax(0, 1fr); gap: 28px; }
    .qr-stage { position: sticky; top: 16px; }
}

.qr-stage,
.qr-controls { display: grid; gap: 14px; min-width: 0; }

/* ---------- campi ---------- */

.qr-field { display: grid; gap: 6px; min-width: 0; }
.qr-field label,
.qr-field-label,
.qr-group legend {
    font-size: 0.82rem;
    font-weight: 700;
    color: var(--text-secondary);
}
.qr-field-head { display: flex; justify-content: space-between; gap: 10px; align-items: baseline; }
.qr-range-value { font-variant-numeric: tabular-nums; font-weight: 700; color: var(--text-primary); font-size: 0.86rem; }

.qr-field input[type="text"],
.qr-field select,
.qr-file {
    width: 100%;
    min-height: 44px;
    padding: 9px 12px;
    border: 1px solid var(--border-strong);
    border-radius: var(--radius-md);
    background: var(--surface-inset);
    color: var(--text-primary);
    font: inherit;
}
#qrLink { font-size: 1rem; }
.qr-file { padding: 8px 10px; font-size: 0.88rem; }

.qr-field input[type="range"] { width: 100%; min-height: 28px; accent-color: var(--accent); }

.qr-color { display: flex; align-items: center; gap: 10px; }
.qr-color input[type="color"] {
    width: 52px;
    height: 40px;
    padding: 2px;
    border: 1px solid var(--border-strong);
    border-radius: var(--radius-md);
    background: var(--surface-inset);
    cursor: pointer;
}
.qr-color-code { color: var(--text-secondary); font-size: 0.86rem; }

.qr-field-check { display: flex; align-items: center; gap: 10px; grid-template-columns: none; }
.qr-field-check input { width: 20px; height: 20px; accent-color: var(--accent); flex: none; }
.qr-field-check label { font-size: 0.9rem; color: var(--text-primary); font-weight: 600; }

.qr-hint { margin: 0; font-size: 0.8rem; color: var(--text-muted); }
.qr-inline-error { margin: 0; font-size: 0.85rem; color: var(--danger); font-weight: 600; }

.qr-field input:focus-visible,
.qr-field select:focus-visible,
.qr-file:focus-visible,
.qr-color input:focus-visible,
.qr-button:focus-visible,
.qr-preset:focus-visible,
.qr-section summary:focus-visible,
.qr-segment input:focus-visible + label {
    outline: 2px solid var(--accent);
    outline-offset: 2px;
}

/* ---------- scelta a segmenti ---------- */

.qr-segmented { display: flex; gap: 4px; padding: 4px; border: 1px solid var(--border-default); border-radius: var(--radius-md); background: var(--surface-inset); }
.qr-segment { flex: 1; position: relative; }
.qr-segment input { position: absolute; opacity: 0; inset: 0; margin: 0; cursor: pointer; }
.qr-segment label {
    display: block;
    padding: 8px 10px;
    border-radius: var(--radius-sm);
    text-align: center;
    font-size: 0.88rem;
    font-weight: 700;
    color: var(--text-secondary);
    cursor: pointer;
}
.qr-segment input:checked + label { background: var(--accent-solid); color: var(--on-accent); }

/* ---------- sezioni comprimibili ---------- */

.qr-section { border: 1px solid var(--border-default); border-radius: var(--radius-lg); background: var(--surface-raised); }
.qr-section summary {
    min-height: 48px;
    padding: 12px 16px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    cursor: pointer;
    font-weight: 800;
    color: var(--text-primary);
    list-style: none;
}
.qr-section summary::-webkit-details-marker { display: none; }
.qr-section summary::after { content: "+"; font-size: 1.3rem; font-weight: 600; color: var(--text-secondary); }
.qr-section[open] summary::after { content: "−"; }
.qr-section-body { display: grid; gap: 14px; padding: 4px 16px 16px; }

.qr-group { display: grid; gap: 12px; margin: 0; padding: 12px; border: 1px solid var(--border-subtle); border-radius: var(--radius-md); min-width: 0; }
.qr-group legend { padding: 0 6px; }

/* ---------- preset e pulsanti ---------- */

.qr-presets { display: grid; gap: 8px; }
.qr-preset-list { display: flex; flex-wrap: wrap; gap: 8px; }
.qr-preset,
.qr-button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    width: auto;
    min-height: 44px;
    padding: 8px 14px;
    border: 1px solid var(--border-strong);
    border-radius: var(--radius-md);
    background: var(--surface-raised);
    color: var(--text-primary);
    font: inherit;
    font-weight: 700;
    cursor: pointer;
}
.qr-preset:hover,
.qr-button:hover:not(:disabled) { background: var(--surface-hover); }
.qr-swatch { width: 18px; height: 18px; border-radius: 50%; border: 1px solid var(--border-strong); flex: none; }
.qr-button-quiet { border-style: dashed; color: var(--text-secondary); }
.qr-button-primary { background: var(--accent-solid); border-color: var(--accent-solid); color: var(--on-accent); min-width: 150px; }
.qr-button-primary:hover:not(:disabled) { background: var(--accent-solid-hover); }
.qr-button:disabled { opacity: 0.5; cursor: not-allowed; }

/* ---------- logo caricato ---------- */

.qr-logo-current { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; }
.qr-logo-thumb { width: 44px; height: 44px; object-fit: contain; border-radius: var(--radius-sm); border: 1px solid var(--border-default); background: #fff; }
.qr-logo-name { flex: 1; min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; color: var(--text-secondary); font-size: 0.88rem; }

/* ---------- anteprima ---------- */

.qr-frame {
    display: grid;
    place-items: center;
    aspect-ratio: 1;
    width: 100%;
    max-width: 440px;
    margin-inline: auto;
    border: 1px solid var(--border-default);
    border-radius: var(--radius-lg);
    background: var(--surface-inset);
    overflow: hidden;
}
.qr-frame[data-state="empty"] { border-style: dashed; }
.qr-frame[data-transparent="true"][data-state="ready"] {
    background-color: #ffffff;
    background-image:
        linear-gradient(45deg, #d4d9e1 25%, transparent 25%, transparent 75%, #d4d9e1 75%),
        linear-gradient(45deg, #d4d9e1 25%, transparent 25%, transparent 75%, #d4d9e1 75%);
    background-size: 20px 20px;
    background-position: 0 0, 10px 10px;
}
.qr-frame[aria-busy] .qr-image { opacity: 0.6; }
.qr-image { width: 100%; height: 100%; object-fit: contain; display: block; transition: opacity 0.15s; }
.qr-empty { margin: 0; padding: 24px; text-align: center; color: var(--text-secondary); max-width: 26ch; }

.qr-messages { display: grid; gap: 8px; }
.qr-messages:empty { display: none; }
.qr-messages .status { margin: 0; }

.qr-download { display: flex; flex-wrap: wrap; align-items: flex-end; gap: 12px; }
.qr-download .qr-field { flex: 1; min-width: 140px; }

@media (prefers-reduced-motion: reduce) {
    .qr-image { transition: none; }
}