/* ============================================================
   FSENG Calcolatrici - stile unico, minimal, site-coherent
   ============================================================ */

/* Garantisce che [hidden] funzioni anche con CSS resetter di temi WP */
.fseng-calc [hidden] {
  display: none !important;
}

/* ── Variabili e base ── */
.fseng-calc {
  --fseng-accent:    #c41221;
  --fseng-dark:      #111111;
  --fseng-muted:     #737373;
  --fseng-border:    #e2e2e2;
  --fseng-res-bg:    #f6f6f6;
  --fseng-res-line:  #e9e9e9;
  --fseng-input-br:  #cdcdcd;

  width: 100%;
  box-sizing: border-box;
  margin: 1.5rem 0 2.5rem;
  padding: 0;
  font-family: inherit;
  font-size: 0.96rem;
  line-height: 1.55;
  color: var(--fseng-dark);
}

.fseng-calc *,
.fseng-calc *::before,
.fseng-calc *::after {
  box-sizing: border-box;
}

/* ── Testata ── */
.fseng-calc__title {
  margin: 0 0 0.3rem;
  font-size: 1.35rem;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--fseng-dark);
}

.fseng-calc__note {
  margin: 0 0 1.5rem;
  font-size: 0.84rem;
  color: var(--fseng-muted);
  max-width: 700px;
  line-height: 1.6;
}

/* ── Griglia input ── */
.fseng-calc__grid {
  display: grid;
  gap: 1.1rem 1.5rem;
  grid-template-columns: repeat(auto-fill, minmax(170px, 1fr));
  margin-bottom: 1.25rem;
}
.fseng-calc__grid--narrow {
  grid-template-columns: minmax(120px, 240px);
}

@media (max-width: 480px) {
  .fseng-calc__grid {
    grid-template-columns: 1fr;
    gap: 0.9rem;
  }
}

/* ── Campo singolo ── */
.fseng-calc__field {
  display: flex;
  flex-direction: column;
  gap: 0.28rem;
}

.fseng-calc__field span {
  font-size: 0.73rem;
  font-weight: 600;
  color: var(--fseng-muted);
  text-transform: uppercase;
  letter-spacing: 0.055em;
}

.fseng-calc__field input,
.fseng-calc__field select,
.fseng-calc__field textarea {
  width: 100%;
  padding: 0.42rem 0;
  border: none;
  border-bottom: 1.5px solid var(--fseng-input-br);
  border-radius: 0;
  background: transparent;
  font: inherit;
  font-size: 1rem;
  color: var(--fseng-dark);
  outline: none;
  transition: border-color 0.18s;
  appearance: none;
  -webkit-appearance: none;
}

.fseng-calc__field select {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%23888' stroke-width='1.5' fill='none' stroke-linecap='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 2px center;
  padding-right: 1.2rem;
  cursor: pointer;
}

.fseng-calc__field input:focus,
.fseng-calc__field select:focus,
.fseng-calc__field textarea:focus {
  border-color: var(--fseng-dark);
}

.fseng-calc__field input::placeholder,
.fseng-calc__field textarea::placeholder {
  color: #c0c0c0;
  opacity: 1;
}

.fseng-calc__field--full {
  grid-column: 1 / -1;
}

/* ── Azioni / bottoni ── */
.fseng-calc__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 0.75rem;
  margin-bottom: 0.25rem;
}

.fseng-calc__btn {
  cursor: pointer;
  padding: 0.55rem 1.4rem;
  border: 1.5px solid var(--fseng-dark);
  background: var(--fseng-dark);
  color: #fff;
  font: inherit;
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  border-radius: 2px;
  transition: background 0.18s, border-color 0.18s, color 0.18s;
  white-space: nowrap;
}

.fseng-calc__btn:hover {
  background: #2a2a2a;
  border-color: #2a2a2a;
}

.fseng-calc__btn--ghost {
  background: transparent;
  color: var(--fseng-muted);
  border-color: var(--fseng-border);
  font-weight: 500;
  letter-spacing: 0;
  text-transform: none;
}

.fseng-calc__btn--ghost:hover {
  background: #f0f0f0;
  border-color: #999;
  color: var(--fseng-dark);
}

/* ── Errore ── */
.fseng-calc__err {
  margin: 0.6rem 0 0;
  color: var(--fseng-accent);
  font-size: 0.87rem;
  font-weight: 500;
}

/* ── Risultati DL/DT/DD (usati da fds-mesh + detact + stats) ── */
.fseng-calc__results {
  margin: 1.4rem 0 0;
  background: var(--fseng-res-bg);
  border-radius: 4px;
  padding: 1rem 1.25rem;
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 0;
}

.fseng-calc__results dt,
.fseng-calc__results dd {
  margin: 0;
  padding: 0.48rem 0;
  border-bottom: 1px solid var(--fseng-res-line);
  font-size: 0.9rem;
}

.fseng-calc__results dt {
  font-weight: 400;
  color: var(--fseng-muted);
  padding-right: 1rem;
}

.fseng-calc__results dd {
  font-weight: 700;
  color: var(--fseng-dark);
  text-align: right;
  font-variant-numeric: tabular-nums;
}

/* ── Risultato inline (single-line results) ── */
.fseng-calc__results-line {
  margin: 1.25rem 0 0;
  padding: 0.9rem 1.1rem;
  background: var(--fseng-res-bg);
  border-left: 3px solid var(--fseng-dark);
  font-size: 0.92rem;
  font-weight: 500;
  line-height: 1.7;
}

/* ── Equazione ── */
.fseng-calc__equation-out {
  margin-top: 1rem;
  padding: 0.85rem 1.1rem;
  background: var(--fseng-res-bg);
  border-radius: 4px;
  font-size: 0.96rem;
  line-height: 1.7;
}

/* ============================================================
   Conversioni (tab generico)
   ============================================================ */
.fseng-conv__tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin-bottom: 1.1rem;
}

.fseng-conv__tab {
  cursor: pointer;
  padding: 0.28rem 0.7rem;
  border: 1.5px solid var(--fseng-border);
  border-radius: 2px;
  background: transparent;
  font: inherit;
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--fseng-muted);
  transition: border-color 0.15s, color 0.15s;
}

.fseng-conv__tab.is-active {
  border-color: var(--fseng-dark);
  color: var(--fseng-dark);
}

.fseng-conv__tab:hover:not(.is-active) {
  border-color: #aaa;
  color: var(--fseng-dark);
}

.fseng-conv__panel[hidden] {
  display: none !important;
}

.fseng-conv__grid {
  display: grid;
  gap: 0.75rem 1.5rem;
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

@media (max-width: 540px) {
  .fseng-conv__grid {
    grid-template-columns: 1fr;
  }
}

.fseng-conv__actions {
  justify-content: flex-start;
  margin-top: 1.25rem;
}

/* ============================================================
   Conversioni pressione (tabella)
   ============================================================ */
.fseng-pressure-table {
  border: 1px solid var(--fseng-border);
  background: #fff;
  border-radius: 4px;
  overflow: hidden;
}

.fseng-pressure-table__row {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.fseng-pressure-table__row + .fseng-pressure-table__row {
  border-top: 1px solid var(--fseng-border);
}

.fseng-pressure-table__cell {
  display: grid;
  grid-template-columns: 1fr 170px;
  align-items: center;
  gap: 0.6rem;
  padding: 0.5rem 0.9rem;
}

.fseng-pressure-table__cell + .fseng-pressure-table__cell {
  border-left: 1px solid var(--fseng-border);
}

.fseng-pressure-table__cell span {
  font-size: 0.9rem;
  color: var(--fseng-dark);
}

.fseng-pressure-table__cell input {
  width: 100%;
  padding: 0.38rem 0;
  border: none;
  border-bottom: 1.5px solid var(--fseng-input-br);
  background: transparent;
  font: inherit;
  font-size: 0.97rem;
  outline: none;
  transition: border-color 0.18s;
}

.fseng-pressure-table__cell input:focus {
  border-color: var(--fseng-dark);
}

.fseng-pressure-table__cell input::placeholder {
  color: #c0c0c0;
  opacity: 1;
}

.fseng-pressure-table__actions {
  margin-top: 1rem;
}

@media (max-width: 840px) {
  .fseng-pressure-table__row {
    grid-template-columns: 1fr;
  }

  .fseng-pressure-table__cell + .fseng-pressure-table__cell {
    border-left: none;
    border-top: 1px solid var(--fseng-border);
  }

  .fseng-pressure-table__cell {
    grid-template-columns: 1fr 140px;
  }
}

@media (max-width: 400px) {
  .fseng-pressure-table__cell {
    grid-template-columns: 1fr;
    gap: 0.25rem;
  }
}

/* ============================================================
   Statistiche
   ============================================================ */
.fseng-stats__textarea {
  width: 100%;
  min-height: 100px;
  padding: 0.6rem 0.7rem;
  border: 1.5px solid var(--fseng-input-br);
  border-radius: 4px;
  font: inherit;
  font-size: 0.95rem;
  resize: vertical;
  background: transparent;
  outline: none;
  transition: border-color 0.18s;
}

.fseng-stats__textarea:focus {
  border-color: var(--fseng-dark);
}

.fseng-stats__actions {
  justify-content: flex-start;
}

.fseng-stats__results {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1.5rem;
  margin-top: 1.4rem;
}

@media (max-width: 640px) {
  .fseng-stats__results {
    grid-template-columns: 1fr;
  }
}

.fseng-stats__section {
  background: var(--fseng-res-bg);
  border-radius: 4px;
  padding: 1rem 1.1rem;
}

.fseng-stats__section-title {
  margin: 0 0 0.5rem;
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--fseng-muted);
}

/* DL list Notion-style - usato da stats, detact */
.fseng-stats__list {
  margin: 0;
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 0;
}

.fseng-stats__list dt,
.fseng-stats__list dd {
  margin: 0;
  padding: 0.42rem 0;
  border-bottom: 1px solid var(--fseng-res-line);
  font-size: 0.88rem;
}

.fseng-stats__list dt {
  color: var(--fseng-muted);
  font-weight: 400;
  padding-right: 0.75rem;
}

.fseng-stats__list dd {
  text-align: right;
  font-weight: 700;
  color: var(--fseng-dark);
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
}

/* ============================================================
   Travel Time
   ============================================================ */
.fseng-trav__col-header {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr auto;
  gap: 0 0.5rem;
  margin-top: 1.4rem;
  padding-bottom: 0.35rem;
  border-bottom: 1.5px solid var(--fseng-dark);
}

.fseng-trav__col-header span {
  font-size: 0.72rem;
  font-weight: 700;
  color: var(--fseng-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

@media (max-width: 500px) {
  .fseng-trav__col-header {
    display: none;
  }
}

.fseng-trav__doors {
  display: flex;
  flex-direction: column;
}

.fseng-trav__door {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr auto;
  gap: 0 0.5rem;
  align-items: center;
  padding: 0.2rem 0;
  border-bottom: 1px solid var(--fseng-border);
  transition: background 0.15s;
}

.fseng-trav__door.is-locked {
  background: #fffdf0;
}

@media (max-width: 500px) {
  .fseng-trav__door {
    grid-template-columns: 1fr 1fr;
    grid-template-rows: auto auto;
    padding: 0.5rem 0;
    gap: 0.4rem 0.5rem;
  }

  .fseng-trav__door-actions {
    grid-column: 2;
    grid-row: 1 / 3;
    align-self: center;
  }
}

.fseng-trav__inp {
  width: 100%;
  padding: 0.45rem 0;
  border: none;
  border-bottom: 1.5px solid var(--fseng-input-br);
  background: transparent;
  font: inherit;
  font-size: 0.98rem;
  color: var(--fseng-dark);
  outline: none;
  transition: border-color 0.18s;
}

.fseng-trav__inp:focus {
  border-color: var(--fseng-dark);
}

.fseng-trav__inp::placeholder {
  color: #c0c0c0;
  opacity: 1;
}

.fseng-trav__inp--pct {
  color: var(--fseng-muted);
}

.fseng-trav__door.is-locked .fseng-trav__inp--pct {
  color: #9a6700;
  font-weight: 700;
}

.fseng-trav__door-actions {
  display: flex;
  align-items: center;
  gap: 0.15rem;
  justify-content: flex-end;
}

.fseng-trav__lock-btn,
.fseng-trav__remove-btn {
  background: none;
  border: none;
  padding: 0.25rem 0.3rem;
  cursor: pointer;
  font-size: 0.95rem;
  line-height: 1;
  border-radius: 3px;
  color: var(--fseng-muted);
  transition: background 0.14s, color 0.14s;
}

.fseng-trav__lock-btn:hover {
  background: #f0f0f0;
  color: var(--fseng-dark);
}

.fseng-trav__remove-btn {
  color: #bb2222;
}

.fseng-trav__remove-btn:hover {
  background: #fff0f0;
}

.fseng-trav__add-row {
  margin-top: 0.6rem;
}

.fseng-trav__add-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  background: none;
  border: 1px dashed #bbb;
  padding: 0.32rem 0.85rem;
  border-radius: 2px;
  font: inherit;
  font-size: 0.84rem;
  color: var(--fseng-muted);
  cursor: pointer;
  transition: border-color 0.18s, color 0.18s;
}

.fseng-trav__add-btn:hover {
  border-color: var(--fseng-dark);
  color: var(--fseng-dark);
}

.fseng-trav__opt-btn {
  background: var(--fseng-accent);
  border-color: var(--fseng-accent);
  color: #fff;
}

.fseng-trav__opt-btn:hover {
  background: #a50e1c;
  border-color: #a50e1c;
}

/* Risultati travel time */
.fseng-trav__results {
  margin-top: 1.4rem;
  padding-top: 1.2rem;
  border-top: 2px solid var(--fseng-dark);
}

.fseng-trav__total {
  display: flex;
  align-items: baseline;
  gap: 0.75rem;
  flex-wrap: wrap;
  margin-bottom: 1.1rem;
}

.fseng-trav__total-num {
  font-size: 2.8rem;
  font-weight: 800;
  color: var(--fseng-dark);
  letter-spacing: -0.03em;
  line-height: 1;
}

.fseng-trav__total-label {
  font-size: 0.85rem;
  color: var(--fseng-muted);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.fseng-trav__total-sub {
  font-size: 0.8rem;
  color: #aaa;
}

.fseng-trav__table-wrap {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.fseng-trav__table {
  border-collapse: collapse;
  width: 100%;
  font-size: 0.88rem;
  min-width: 440px;
}

.fseng-trav__table th,
.fseng-trav__table td {
  border-bottom: 1px solid var(--fseng-border);
  padding: 0.5rem 0.65rem;
  text-align: right;
  white-space: nowrap;
}

.fseng-trav__table th {
  background: #f0f0f0;
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--fseng-muted);
  text-align: center;
  border-bottom: 1.5px solid var(--fseng-dark);
}

.fseng-trav__table td:first-child {
  text-align: center;
  font-weight: 700;
}

.fseng-trav__table tr.is-bottleneck td {
  background: #fff8e1;
}

.fseng-trav__table tr.is-bottleneck td:last-child {
  color: var(--fseng-accent);
  font-weight: 800;
}

/* ============================================================
   DetactT2
   ============================================================ */

/* Griglia a 2 colonne fisse per non schiacciare le label */
.fseng-calc--detact .fseng-calc__grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

@media (max-width: 580px) {
  .fseng-calc--detact .fseng-calc__grid {
    grid-template-columns: 1fr;
  }
}

/* Campo composto: preset + custom nella stessa cella */
.fseng-detact__field-group {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}
.fseng-detact__mode-row {
  display: flex;
  flex-wrap: wrap;
  gap: 1.5rem;
  margin-bottom: 1.3rem;
}

.fseng-detact__radio {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  cursor: pointer;
  font-weight: 500;
  font-size: 0.94rem;
}

.fseng-detact__radio input[type="radio"] {
  accent-color: var(--fseng-dark);
  width: 1rem;
  height: 1rem;
  cursor: pointer;
}

.fseng-detact__adv-header {
  margin-top: 1.1rem;
  border-top: 1px solid var(--fseng-border);
  padding-top: 0.7rem;
}

.fseng-detact__adv-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  background: none;
  border: none;
  padding: 0;
  font: inherit;
  font-size: 0.83rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--fseng-muted);
  cursor: pointer;
  transition: color 0.15s;
}

.fseng-detact__adv-btn:hover {
  color: var(--fseng-dark);
}

.fseng-detact__advanced {
  padding: 0.75rem 0 0.25rem;
}

.fseng-detact__main-btn {
  background: var(--fseng-accent);
  border-color: var(--fseng-accent);
  color: #fff;
}

.fseng-detact__main-btn:hover {
  background: #a50e1c;
  border-color: #a50e1c;
}

.fseng-detact__results {
  margin-top: 1.4rem;
  padding-top: 1.2rem;
  border-top: 2px solid var(--fseng-dark);
}

.fseng-detact__section-title {
  margin: 0 0 0.65rem;
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--fseng-muted);
}

.fseng-detact__section-title--mt {
  margin-top: 1.5rem;
}

.fseng-detact__res-list {
  background: var(--fseng-res-bg);
  border-radius: 4px;
  padding: 0.75rem 1.1rem;
  max-width: 580px;
}

.fseng-detact__curve-out {
  margin-top: 0.75rem;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.fseng-detact__curve-wrap {
  display: inline-block;
  min-width: 200px;
}

.fseng-detact__curve-table {
  border-collapse: collapse;
  font-size: 0.88rem;
  background: #fff;
  min-width: 200px;
}

.fseng-detact__curve-table th,
.fseng-detact__curve-table td {
  border: 1px solid var(--fseng-border);
  padding: 0.32rem 0.85rem;
  text-align: right;
}

.fseng-detact__curve-table th {
  background: #f0f0f0;
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--fseng-muted);
  text-align: center;
}

.fseng-detact__curve-table tr.is-activation td {
  background: #fff8e1;
  font-weight: 700;
  color: #8a5700;
}

/* ============================================================
   Resistenza al fuoco - mattoni forati
   ============================================================ */
.fseng-frb__table-wrap {
  margin-top: 1rem;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.fseng-frb__table {
  width: 100%;
  border-collapse: collapse;
  background: #fff;
  min-width: 680px;
  font-size: 0.88rem;
}

.fseng-frb__table th,
.fseng-frb__table td {
  border: 1px solid var(--fseng-border);
  padding: 0.45rem 0.55rem;
  text-align: center;
  vertical-align: middle;
}

.fseng-frb__table th {
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  background: #f0f0f0;
  color: var(--fseng-muted);
}

.fseng-frb__table .is-highlight {
  background: #fff3cd;
  font-weight: 700;
}

.fseng-frb__table .is-class {
  background: var(--fseng-dark);
  color: #fff;
  font-weight: 700;
}

.fseng-frb__current {
  margin-top: 1rem;
  display: inline-flex;
  border-radius: 3px;
  overflow: hidden;
  border: 1.5px solid var(--fseng-dark);
}

.fseng-frb__current-label {
  padding: 0.4rem 0.85rem;
  background: var(--fseng-dark);
  color: #fff;
  font-size: 0.78rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.fseng-frb__current-value {
  padding: 0.4rem 1rem;
  background: #fff8e1;
  min-width: 60px;
  text-align: center;
  font-weight: 800;
  font-size: 1rem;
}