/* Tool di confronto interattivo — docs/confronto.md Parte 1.
   Tabella responsive: prima colonna sticky, scroll orizzontale sulle macchine,
   evidenziazione differenze e "migliore". CSS custom (no Tailwind). */

.confronto-page {
  padding-block: var(--space-8) var(--space-16);
}

.confronto-title {
  font-size: var(--text-2xl);
  margin: var(--space-4) 0 var(--space-6);
}

/* --- Stati vuoti / errore --------------------------------------------------- */
.confronto-empty {
  background: var(--color-bg-subtle);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-10);
  text-align: center;
}
.confronto-empty p {
  color: var(--color-text-secondary);
  margin-bottom: var(--space-5);
}
.confronto-empty__hint {
  color: var(--color-text-secondary);
}

/* --- Stato "scegli la seconda macchina" ------------------------------------ */
.confronto-pick__chosen {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  padding: var(--space-4);
  background: var(--color-bg-subtle);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
}
.confronto-pick__img {
  flex: 0 0 auto;
  width: 96px;
  aspect-ratio: 4 / 3;
  background: #fff;
  border: 1px solid #fff;
  border-radius: var(--radius-md);
  overflow: hidden;
}
.confronto-pick__img img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}
.confronto-pick__label {
  font-size: var(--text-xs);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--color-text-tertiary);
}
.confronto-pick__name {
  font-size: var(--text-lg);
  font-weight: 600;
}
.confronto-pick__heading {
  font-size: var(--text-base);
  font-weight: 600;
  margin: var(--space-6) 0 var(--space-4);
}
.confronto-pick__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: var(--space-3);
}
.confronto-pick__list li {
  display: flex;
}
.confronto-pick__option {
  flex: 1;
  display: flex;
  align-items: center;
  gap: var(--space-3);
  height: 64px;
  padding: 0 var(--space-3);
  overflow: hidden;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  text-decoration: none;
  color: inherit;
  transition: border-color var(--transition-fast), background var(--transition-fast);
}
.confronto-pick__option:hover {
  border-color: var(--color-accent);
  background: var(--color-accent-subtle);
}
.confronto-pick__option-img {
  flex: 0 0 56px;
  width: 56px;
  height: 42px;
  background: #fff;
  border: 1px solid #fff;
  border-radius: var(--radius-sm);
  overflow: hidden;
}
.confronto-pick__option-img img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: contain;
}
.confronto-pick__brand-group + .confronto-pick__brand-group {
  margin-top: var(--space-6);
}
.confronto-pick__brand-heading {
  font-size: var(--text-xs);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--color-text-tertiary);
  margin: 0 0 var(--space-2) 0;
}
.confronto-pick__option-text {
  flex: 1;
  display: flex;
  flex-direction: column;
  min-width: 0;
  overflow: hidden;
}
.confronto-pick__option-text strong {
  font-weight: 600;
  font-size: var(--text-sm);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.confronto-pick__option-brand {
  color: var(--color-text-tertiary);
  font-size: var(--text-xs);
}

/* --- Toolbar ---------------------------------------------------------------- */
.confronto-toolbar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-6);
  margin-bottom: var(--space-5);
}
.confronto-difftoggle {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-sm);
  cursor: pointer;
  user-select: none;
}
.confronto-add {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
}
.confronto-add select {
  font: inherit;
  padding: var(--space-1) var(--space-2);
  border: 1px solid var(--color-border-strong);
  border-radius: var(--radius-md);
  background: var(--color-bg);
}

/* --- Tabella ---------------------------------------------------------------- */
.confronto-scroll {
  overflow-x: auto;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
}
.confronto-table {
  border-collapse: collapse;
  width: 100%;
  font-size: var(--text-sm);
  table-layout: fixed;
}
.confronto-table th,
.confronto-table td {
  border-bottom: 1px solid var(--color-border);
  text-align: left;
  vertical-align: middle;
}

/* Prima colonna (parametri) sticky a sinistra. */
.confronto-corner,
.confronto-rowlabel {
  position: sticky;
  left: 0;
  z-index: 2;
  background: var(--color-bg);
  width: 200px;
  padding: var(--space-3) var(--space-4);
  font-weight: 500;
  color: var(--color-text-secondary);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.confronto-unit {
  color: var(--color-text-tertiary);
  font-weight: 400;
  font-size: var(--text-xs);
}

/* Header con le mini-card prodotto. */
.confronto-corner {
  z-index: 3;
  vertical-align: bottom;
}
.confronto-col {
  width: 220px;
  padding: var(--space-3) var(--space-4);
  border-left: 1px solid var(--color-border-subtle);
}
.confronto-card {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  align-items: flex-start;
}
.confronto-card__link {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
  text-decoration: none;
  color: inherit;
}
.confronto-card__img {
  display: block;
  width: 100%;
  aspect-ratio: 4 / 3;
  background: #fff;
  border: 1px solid #fff;
  border-radius: var(--radius-md);
  overflow: hidden;
}
.confronto-card__img img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}
.confronto-card__img .img-placeholder {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  height: 100%;
  color: var(--color-text-disabled);
  font-size: var(--text-xs);
}
.confronto-card__name {
  font-weight: 600;
  color: var(--color-text-primary);
}
.confronto-card__brand {
  color: var(--color-text-tertiary);
  font-size: var(--text-xs);
}
.confronto-remove {
  position: absolute;
  top: 0;
  right: 0;
  width: 22px;
  height: 22px;
  border: 1px solid var(--color-border);
  border-radius: 50%;
  background: var(--color-bg);
  color: var(--color-text-tertiary);
  font-size: var(--text-base);
  line-height: 1;
  cursor: pointer;
}
.confronto-remove:hover {
  color: var(--color-danger);
  border-color: var(--color-danger);
}

/* Riga titolo di blocco. */
.confronto-block th {
  background: var(--color-bg-inset);
  padding: var(--space-2) var(--space-4);
  font-size: var(--text-xs);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--color-text-tertiary);
  position: sticky;
  left: 0;
}

/* Celle dati. */
.confronto-cell {
  padding: var(--space-3) var(--space-4);
  border-left: 1px solid var(--color-border-subtle);
  color: var(--color-text-primary);
}
.confronto-na {
  color: var(--color-text-disabled);
}
.confronto-mat {
  font-size: var(--text-base);
}

/* Riga con differenze: bordo sinistro indaco. */
.confronto-row.is-different .confronto-rowlabel {
  border-left: 3px solid #4f46e5;
  font-weight: 600;
}

/* Toggle "solo differenze": nasconde le righe identiche. */
.confronto-table.diff-only .confronto-row:not(.is-different) {
  display: none;
}

@media (max-width: 640px) {
  .confronto-corner,
  .confronto-rowlabel {
    width: 130px;
    padding: var(--space-2) var(--space-3);
  }
  .confronto-col { width: 160px; }
  .confronto-cell { padding: var(--space-2) var(--space-3); }
}

/* --- Link alla pagina "vs" curata (quando esiste) -------------------------- */
.confronto-readfull {
  display: block;
  margin-bottom: var(--space-5);
  padding: var(--space-3) var(--space-5);
  background: var(--color-accent-subtle);
  border: 1px solid var(--color-accent-border);
  border-radius: var(--radius-md);
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-accent);
}
.confronto-readfull:hover { color: var(--color-accent-hover); }

/* Nota disclaimer sotto la tabella. */
.confronto-note {
  margin-top: var(--space-6);
  font-size: var(--text-xs);
  color: var(--color-text-tertiary);
}