/**
 * App Calculateur - AIR-ELEC V2 — Refonte Pro
 * Calculateur Cloison/Doublage — métreur plâtrerie
 * Palette : design tokens V2, systeme existant
 */

/* ─── Layout ─── */
.calc-app {
  height: 100%;
  display: flex;
  flex-direction: column;
  background: var(--bg);
  font-family: var(--font-sans);
  position: relative;
  overflow: hidden;
}

.calc-scroll {
  flex: 1;
  overflow-y: auto;
  padding: 24px 20px 32px;
  -webkit-overflow-scrolling: touch;
}
.calc-scroll::-webkit-scrollbar { width: 6px; }
.calc-scroll::-webkit-scrollbar-thumb {
  background: rgba(0,0,0,0.12);
  border-radius: 3px;
}

/* ─── Section cards (accent left border + ombre) ─── */
.calc-card {
  background: var(--white);
  border-radius: var(--radius-card);
  border: 0.5px solid var(--gray-200);
  padding: 20px 20px 20px 18px;
  margin-bottom: 16px;
  box-shadow: 0 1px 3px rgba(0,0,0,0.04);
  position: relative;
}
.calc-card::before {
  content: '';
  position: absolute;
  left: 0;
  top: 16px;
  bottom: 16px;
  width: 3px;
  background: var(--green);
  border-radius: 2px;
  opacity: 0.5;
  transition: opacity 0.2s var(--ease-ios);
}
.calc-card:hover::before {
  opacity: 1;
}
.calc-card-title {
  font-size: 14px;
  font-weight: 600;
  color: var(--gray-800);
  margin-bottom: 16px;
  display: flex;
  align-items: center;
  gap: 8px;
  letter-spacing: -0.01em;
}
.calc-card-title i {
  color: var(--green);
  opacity: 0.7;
}

/* ─── Type toggle (cartes pro) ─── */
.calc-type-toggle {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
  margin-bottom: 16px;
}
.calc-type-btn {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  padding: 18px 14px 16px;
  border: 1.5px solid var(--gray-200);
  border-radius: var(--radius-card);
  background: var(--white);
  cursor: pointer;
  text-align: center;
  transition: all 0.2s var(--ease-ios);
  font-family: var(--font-sans);
  position: relative;
  overflow: hidden;
}
.calc-type-btn::after {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: inherit;
  opacity: 0;
  box-shadow: inset 0 0 0 1.5px var(--green);
  transition: opacity 0.2s var(--ease-ios);
  pointer-events: none;
}
.calc-type-btn:hover {
  border-color: var(--gray-300);
  background: var(--gray-50);
  transform: translateY(-1px);
  box-shadow: 0 2px 8px rgba(0,0,0,0.06);
}
.calc-type-btn:active {
  transform: translateY(0);
}
.calc-type-btn.active {
  border-color: var(--green);
  background: var(--green-pale);
  box-shadow: 0 2px 12px rgba(90,158,53,0.15);
}
.calc-type-btn.active::after {
  opacity: 1;
}
.calc-type-btn-icon {
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--gray-500);
  transition: color 0.2s var(--ease-ios);
}
.calc-type-btn.active .calc-type-btn-icon {
  color: var(--green);
}
.calc-type-btn-icon svg {
  width: 26px;
  height: 26px;
}
.calc-type-btn-label {
  font-size: 14px;
  font-weight: 600;
  color: var(--gray-800);
  transition: color 0.2s var(--ease-ios);
}
.calc-type-btn.active .calc-type-btn-label {
  color: var(--green);
}
.calc-type-btn-sub {
  font-size: 11px;
  color: var(--gray-500);
  line-height: 1.3;
  margin-top: -2px;
}

/* ─── Recette selector ─── */
.calc-recette-select {
  width: 100%;
  padding: 10px 12px;
  border: 0.5px solid var(--gray-200);
  border-radius: var(--radius-button);
  font-size: 13px;
  font-family: var(--font-sans);
  outline: none;
  background: var(--white);
  transition: all 0.15s var(--ease-ios);
  margin-bottom: 12px;
  color: var(--gray-800);
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%23a3a3a3' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 12px center;
  padding-right: 32px;
  cursor: pointer;
}
.calc-recette-select:focus {
  border-color: var(--green);
  box-shadow: 0 0 0 3px rgba(90,158,53,0.12);
}

/* ─── Pose selector ─── */
.calc-pose-select {
  width: 100%;
  padding: 9px 12px;
  border: 0.5px solid var(--gray-200);
  border-radius: var(--radius-button);
  font-size: 13px;
  font-family: var(--font-sans);
  outline: none;
  background: var(--white);
  transition: border-color 0.15s;
  color: var(--gray-700);
  margin-bottom: 12px;
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%23a3a3a3' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 12px center;
  padding-right: 32px;
  cursor: pointer;
}
.calc-pose-select:focus {
  border-color: var(--green);
  box-shadow: 0 0 0 3px rgba(90,158,53,0.1);
}
.calc-pose-select:disabled {
  background-color: var(--gray-50);
  color: var(--gray-400);
  cursor: not-allowed;
  opacity: 0.6;
}

/* ─── MO info (badge) ─── */
.calc-mo-line {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 12px;
  background: var(--gray-50);
  border-radius: 20px;
  font-size: 12px;
  color: var(--gray-600);
  margin-top: 4px;
  border: 0.5px solid var(--gray-200);
}
.calc-mo-value {
  font-weight: 700;
  font-family: var(--font-mono);
  color: var(--gray-900);
  font-size: 13px;
}

/* ─── Composition libre ─── */
.calc-compo-libre {
  margin-top: 12px;
  padding: 16px;
  background: var(--gray-50);
  border-radius: var(--radius-card);
  border: 0.5px dashed var(--gray-300);
}
.calc-compo-row {
  display: flex;
  gap: 10px;
  align-items: center;
  margin-bottom: 8px;
}
.calc-compo-row:last-child { margin-bottom: 0; }
.calc-compo-label {
  font-size: 12px;
  font-weight: 600;
  color: var(--gray-600);
  min-width: 80px;
  flex-shrink: 0;
}
.calc-compo-select {
  flex: 1;
  padding: 7px 10px;
  border: 0.5px solid var(--gray-200);
  border-radius: var(--radius-small);
  font-size: 12px;
  font-family: var(--font-sans);
  outline: none;
  background: var(--white);
  color: var(--gray-700);
  cursor: pointer;
}
.calc-compo-select:focus {
  border-color: var(--green);
}

/* ─── Segments ─── */
.calc-segment-card {
  background: var(--white);
  border-radius: var(--radius-card);
  border: 0.5px solid var(--gray-200);
  padding: 18px;
  margin-bottom: 10px;
  transition: all 0.2s var(--ease-ios);
  box-shadow: 0 1px 2px rgba(0,0,0,0.03);
}
.calc-segment-card:hover {
  border-color: var(--gray-300);
  box-shadow: 0 2px 8px rgba(0,0,0,0.05);
}
.calc-segment-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 14px;
}
.calc-segment-num {
  font-size: 13px;
  font-weight: 600;
  color: var(--gray-700);
  display: flex;
  align-items: center;
  gap: 7px;
}
.calc-segment-num i {
  color: var(--gray-400);
}
.calc-segment-rm {
  width: 28px;
  height: 28px;
  border-radius: var(--radius-small);
  border: none;
  background: transparent;
  cursor: pointer;
  color: var(--gray-400);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.15s var(--ease-ios);
}
.calc-segment-rm:hover {
  background: rgba(255,59,48,0.08);
  color: var(--red);
}
.calc-segment-rm:active {
  transform: scale(0.9);
}

.calc-segment-grid {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 10px;
  margin-bottom: 12px;
}
.calc-field-group {
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.calc-field-label {
  font-size: 10px;
  font-weight: 600;
  color: var(--gray-500);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}
.calc-field-input-wrap {
  display: flex;
  align-items: center;
  border: 0.5px solid var(--gray-200);
  border-radius: var(--radius-button);
  overflow: hidden;
  background: var(--white);
  transition: all 0.15s var(--ease-ios);
}
.calc-field-input-wrap:focus-within {
  border-color: var(--green);
  box-shadow: 0 0 0 3px rgba(90,158,53,0.1);
}
.calc-field-input {
  flex: 1;
  padding: 9px 12px;
  border: none;
  outline: none;
  font-size: 15px;
  font-weight: 600;
  font-family: var(--font-mono);
  color: var(--gray-900);
  background: transparent;
  width: 60px;
  -moz-appearance: textfield;
}
.calc-field-input::-webkit-outer-spin-button,
.calc-field-input::-webkit-inner-spin-button {
  -webkit-appearance: none;
  margin: 0;
}
.calc-field-input::placeholder {
  color: var(--gray-300);
  font-weight: 400;
}
.calc-field-suffix {
  padding: 9px 12px 9px 0;
  font-size: 12px;
  font-weight: 600;
  color: var(--gray-400);
  font-family: var(--font-mono);
}
.calc-field-value {
  padding: 9px 12px;
  font-size: 15px;
  font-weight: 700;
  font-family: var(--font-mono);
  color: var(--green);
  text-align: right;
  line-height: 1.4;
  background: var(--green-pale);
  border-radius: var(--radius-button);
  display: flex;
  align-items: center;
  justify-content: flex-end;
  height: 100%;
  min-height: 40px;
  box-sizing: border-box;
}

/* ─── Ouvertures ─── */
.calc-ouvertures-section {
  border-top: 0.5px solid var(--gray-100);
  padding-top: 12px;
  margin-top: 6px;
}
.calc-ouverture-item {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 12px;
  background: var(--gray-50);
  border-radius: var(--radius-button);
  margin-bottom: 6px;
  flex-wrap: wrap;
  border: 0.5px solid transparent;
  transition: border-color 0.15s;
}
.calc-ouverture-item:hover {
  border-color: var(--gray-200);
}
.calc-ouv-type-group {
  display: flex;
  gap: 3px;
  flex-wrap: wrap;
}
.calc-ouv-type-btn {
  padding: 5px 10px;
  border: 0.5px solid var(--gray-200);
  border-radius: 6px;
  background: var(--white);
  font-size: 11px;
  font-weight: 500;
  cursor: pointer;
  font-family: var(--font-sans);
  color: var(--gray-600);
  transition: all 0.15s var(--ease-ios);
}
.calc-ouv-type-btn:hover {
  background: var(--gray-50);
  border-color: var(--gray-300);
}
.calc-ouv-type-btn.active {
  background: var(--green);
  border-color: var(--green);
  color: var(--white);
  font-weight: 600;
  box-shadow: 0 1px 4px rgba(90,158,53,0.2);
}
.calc-ouv-input {
  width: 52px;
  padding: 5px 7px;
  border: 0.5px solid var(--gray-200);
  border-radius: 5px;
  font-size: 11px;
  font-family: var(--font-mono);
  outline: none;
  text-align: right;
  color: var(--gray-800);
  background: var(--white);
  transition: border-color 0.15s;
  -moz-appearance: textfield;
}
.calc-ouv-input::-webkit-outer-spin-button,
.calc-ouv-input::-webkit-inner-spin-button {
  -webkit-appearance: none;
  margin: 0;
}
.calc-ouv-input:focus {
  border-color: var(--green);
  box-shadow: 0 0 0 2px rgba(90,158,53,0.1);
}
.calc-ouv-check-label {
  display: flex;
  align-items: center;
  gap: 4px;
  font-size: 10px;
  color: var(--gray-600);
  cursor: pointer;
  white-space: nowrap;
  user-select: none;
}
.calc-ouv-check-label input[type="checkbox"] {
  accent-color: var(--green);
  width: 14px;
  height: 14px;
  cursor: pointer;
}
.calc-ouv-rm {
  width: 24px;
  height: 24px;
  border: none;
  border-radius: 5px;
  background: transparent;
  cursor: pointer;
  color: var(--gray-400);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: all 0.15s var(--ease-ios);
}
.calc-ouv-rm:hover {
  color: var(--red);
  background: rgba(255,59,48,0.08);
}

.calc-add-ouverture-btn {
  padding: 6px 12px;
  border: 0.5px dashed var(--gray-300);
  border-radius: var(--radius-small);
  background: transparent;
  font-size: 11px;
  font-weight: 500;
  color: var(--gray-500);
  cursor: pointer;
  font-family: var(--font-sans);
  transition: all 0.15s var(--ease-ios);
  display: inline-flex;
  align-items: center;
  gap: 5px;
}
.calc-add-ouverture-btn:hover {
  border-color: var(--green);
  color: var(--green);
  background: var(--green-pale);
}

/* ─── Add segment button ─── */
.calc-add-segment-btn {
  width: 100%;
  padding: 14px;
  border: 1px dashed var(--gray-300);
  border-radius: var(--radius-card);
  background: transparent;
  font-size: 13px;
  font-weight: 500;
  color: var(--gray-500);
  cursor: pointer;
  font-family: var(--font-sans);
  transition: all 0.2s var(--ease-ios);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 7px;
  margin-bottom: 14px;
}
.calc-add-segment-btn:hover {
  border-color: var(--green);
  color: var(--green);
  background: var(--green-pale);
  box-shadow: 0 1px 6px rgba(90,158,53,0.1);
}
.calc-add-segment-btn:active {
  transform: scale(0.99);
}

/* ─── Surface summary (KPI cards mini) ─── */
.calc-surface-summary {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  padding: 0;
  background: transparent;
  border: none;
  border-radius: 0;
}
.calc-surface-item {
  text-align: center;
  background: var(--white);
  border-radius: 12px;
  border: 0.5px solid var(--gray-200);
  padding: 14px 16px;
  box-shadow: 0 1px 2px rgba(0,0,0,0.04);
}
.calc-surface-label {
  font-size: 10px;
  font-weight: 600;
  color: var(--gray-500);
  text-transform: uppercase;
  letter-spacing: 0.3px;
  margin-bottom: 4px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 5px;
}
.calc-surface-value {
  font-size: 24px;
  font-weight: 700;
  color: var(--gray-900);
  font-family: var(--font-mono);
  line-height: 1.1;
}
.calc-surface-value--main {
  color: var(--green);
}
.calc-surface-value--dark {
  color: #3d7a22;
}
.calc-surface-value--light {
  color: var(--green-light);
}
.calc-surface-value--mid {
  color: var(--green-mid);
}

/* ─── Calculer button (CTA principal) ─── */
.calc-calculate-btn {
  width: 100%;
  padding: 16px;
  border: none;
  border-radius: var(--radius-card);
  background: var(--green);
  color: var(--white);
  font-size: 16px;
  font-weight: 700;
  font-family: var(--font-sans);
  cursor: pointer;
  transition: all 0.2s var(--ease-ios);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  margin-bottom: 16px;
  box-shadow: 0 2px 8px rgba(90,158,53,0.2);
  letter-spacing: -0.01em;
  position: relative;
  overflow: hidden;
}
.calc-calculate-btn::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(255,255,255,0.08) 0%, transparent 50%);
  pointer-events: none;
}
.calc-calculate-btn:hover:not(:disabled) {
  background: var(--green-light);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(90,158,53,0.3);
}
.calc-calculate-btn:active:not(:disabled) {
  transform: translateY(0);
  box-shadow: 0 2px 8px rgba(90,158,53,0.2);
}
.calc-calculate-btn:disabled {
  opacity: 0.3;
  cursor: not-allowed;
  transform: none !important;
  box-shadow: none !important;
}
.calc-calculate-btn i {
  color: var(--white);
}

/* ─── Result section ─── */
.calc-result-section {
  animation: calcFadeIn 0.35s var(--ease-ios);
}
@keyframes calcFadeIn {
  from { opacity: 0; transform: translateY(12px); }
  to { opacity: 1; transform: translateY(0); }
}

.calc-result-table {
  width: 100%;
  border-collapse: separate;
  border-spacing: 0;
  font-size: 12px;
  border-radius: var(--radius-button);
  overflow: hidden;
  border: 0.5px solid var(--gray-200);
}
.calc-result-table thead th {
  padding: 10px 12px;
  background: var(--gray-50);
  border-bottom: 0.5px solid var(--gray-200);
  font-size: 10px;
  font-weight: 600;
  color: var(--gray-500);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  text-align: left;
  white-space: nowrap;
}
.calc-result-table thead th:last-child { text-align: right; }
.calc-result-table tbody tr {
  transition: background 0.15s;
}
.calc-result-table tbody tr:nth-child(even) {
  background: var(--gray-50);
}
.calc-result-table tbody tr:hover {
  background: var(--green-pale);
}
.calc-result-table tbody td {
  padding: 9px 12px;
  border-bottom: 0.5px solid var(--gray-100);
  color: var(--gray-800);
  vertical-align: middle;
  font-size: 12px;
}
.calc-result-table tbody tr:last-child td { border-bottom: none; }
.calc-result-table tbody td:last-child {
  text-align: right;
  font-weight: 600;
  font-family: var(--font-mono);
}
.calc-result-table tbody td:nth-child(2),
.calc-result-table tbody td:nth-child(3) {
  font-family: var(--font-mono);
  font-size: 11px;
  text-align: right;
}
.calc-result-table .calc-qte-editable {
  cursor: pointer;
  padding: 2px 6px;
  border-radius: 4px;
  transition: background 0.15s;
  display: inline-block;
  border: 1px solid transparent;
}
.calc-result-table .calc-qte-editable:hover {
  background: rgba(0,0,0,0.04);
  border-color: var(--gray-200);
}
.calc-result-table .calc-qte-editable.editing {
  background: var(--white);
  border: 0.5px solid var(--green);
  box-shadow: 0 0 0 2px rgba(90,158,53,0.1);
  padding: 1px 5px;
}
.calc-result-table .calc-qte-editable input {
  width: 55px;
  border: none;
  outline: none;
  font-size: 12px;
  font-family: var(--font-mono);
  background: transparent;
  text-align: right;
}

.calc-result-total-row {
  display: flex;
  justify-content: flex-end;
  align-items: center;
  gap: 6px;
  padding: 12px 14px 4px;
  font-size: 13px;
  font-weight: 700;
  font-family: var(--font-mono);
  color: var(--gray-900);
}

/* ─── MO result ─── */
.calc-mo-result {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 16px;
  background: var(--gray-50);
  border-radius: var(--radius-button);
  margin-top: 14px;
  font-size: 13px;
  color: var(--gray-600);
  border: 0.5px solid var(--gray-200);
}
.calc-mo-result-value {
  font-weight: 700;
  font-family: var(--font-mono);
  color: var(--gray-900);
}

/* ─── Total KPI (accent card) ─── */
.calc-total-kpi {
  padding: 14px 16px;
  background: linear-gradient(135deg, var(--green-pale) 0%, var(--white) 100%);
  border: 0.5px solid rgba(90,158,53,0.2);
  border-radius: var(--radius-card);
  margin-top: 14px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  box-shadow: 0 1px 4px rgba(90,158,53,0.08);
}
.calc-total-kpi-label {
  font-size: 10px;
  font-weight: 600;
  color: var(--gray-500);
  text-transform: uppercase;
  letter-spacing: 0.3px;
  display: flex;
  align-items: center;
  gap: 5px;
}
.calc-total-kpi-value {
  font-size: 24px;
  font-weight: 700;
  color: var(--green);
  font-family: var(--font-mono);
  line-height: 1.1;
}

/* ─── Chaining suggestion ─── */
.calc-chaining {
  margin-top: 12px;
  padding: 14px 16px;
  background: rgba(0,122,255,0.04);
  border: 0.5px solid rgba(0,122,255,0.15);
  border-radius: var(--radius-card);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  font-size: 12px;
  color: var(--gray-600);
}
.calc-chaining-btn {
  padding: 7px 16px;
  border: 0.5px solid var(--blue);
  border-radius: var(--radius-button);
  background: var(--white);
  color: var(--blue);
  font-size: 12px;
  font-weight: 600;
  cursor: pointer;
  font-family: var(--font-sans);
  white-space: nowrap;
  transition: all 0.15s var(--ease-ios);
}
.calc-chaining-btn:hover {
  background: var(--blue);
  color: var(--white);
  box-shadow: 0 2px 8px rgba(0,122,255,0.2);
}

/* ─── Export section ─── */
.calc-export-card {
  background: var(--white);
  border-radius: var(--radius-card);
  border: 0.5px solid var(--gray-200);
  padding: 20px;
  margin-bottom: 16px;
  box-shadow: 0 1px 3px rgba(0,0,0,0.04);
}
.calc-export-field {
  display: flex;
  flex-direction: column;
  gap: 4px;
  margin-bottom: 14px;
}
.calc-export-label {
  font-size: 11px;
  font-weight: 600;
  color: var(--gray-500);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}
.calc-export-input {
  padding: 10px 12px;
  border: 0.5px solid var(--gray-200);
  border-radius: var(--radius-button);
  font-size: 13px;
  font-family: var(--font-sans);
  outline: none;
  color: var(--gray-800);
  transition: all 0.15s;
}
.calc-export-input:focus {
  border-color: var(--green);
  box-shadow: 0 0 0 3px rgba(90,158,53,0.1);
}
.calc-export-select {
  padding: 10px 12px;
  border: 0.5px solid var(--gray-200);
  border-radius: var(--radius-button);
  font-size: 13px;
  font-family: var(--font-sans);
  outline: none;
  background: var(--white);
  color: var(--gray-700);
  cursor: pointer;
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%23a3a3a3' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 12px center;
  padding-right: 32px;
}
.calc-export-select:focus {
  border-color: var(--green);
  box-shadow: 0 0 0 3px rgba(90,158,53,0.1);
}
.calc-export-btn {
  width: 100%;
  padding: 14px;
  border: none;
  border-radius: var(--radius-card);
  background: var(--green);
  color: var(--white);
  font-size: 14px;
  font-weight: 700;
  font-family: var(--font-sans);
  cursor: pointer;
  transition: all 0.2s var(--ease-ios);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  margin-top: 6px;
  box-shadow: 0 1px 4px rgba(90,158,53,0.15);
}
.calc-export-btn:hover:not(:disabled) {
  background: var(--green-light);
  transform: translateY(-1px);
  box-shadow: 0 4px 14px rgba(90,158,53,0.25);
}
.calc-export-btn:active:not(:disabled) {
  transform: translateY(0);
}
.calc-export-btn:disabled {
  opacity: 0.35;
  cursor: not-allowed;
  transform: none !important;
  box-shadow: none !important;
}

/* ─── Read-only frozen mode ─── */
.calc-frozen .calc-result-table tbody tr {
  opacity: 0.65;
  pointer-events: none;
}
.calc-frozen .calc-qte-editable {
  cursor: default;
  pointer-events: none;
}
.calc-frozen .calc-qte-editable:hover {
  background: transparent;
  border-color: transparent;
}

/* ─── Toast ─── */
.calc-toast {
  position: absolute;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%);
  padding: 12px 20px;
  border-radius: 12px;
  background: var(--gray-900);
  color: var(--white);
  font-size: 13px;
  font-weight: 500;
  box-shadow: 0 6px 24px rgba(0,0,0,0.25);
  display: flex;
  align-items: center;
  gap: 10px;
  z-index: 200;
  animation: calcToastIn 0.3s var(--ease-ios);
  pointer-events: none;
  white-space: nowrap;
}
@keyframes calcToastIn {
  from { opacity: 0; transform: translateX(-50%) translateY(16px); }
  to { opacity: 1; transform: translateX(-50%) translateY(0); }
}

/* ─── Hidden utility ─── */
.calc-hidden { display: none !important; }

/* ─── Responsive ─── */
@media (max-width: 767px) {
  .calc-scroll { padding: 12px 12px 24px; }
  .calc-card { padding: 16px 14px 16px 12px; }
  .calc-card::before { top: 12px; bottom: 12px; }
  .calc-card-title { font-size: 13px; }
  .calc-type-toggle { gap: 8px; }
  .calc-type-btn { padding: 14px 10px 12px; gap: 6px; }
  .calc-type-btn-icon { width: 28px; height: 28px; }
  .calc-type-btn-icon svg { width: 22px; height: 22px; }
  .calc-type-btn-label { font-size: 13px; }
  .calc-segment-card { padding: 14px; }
  .calc-segment-grid { grid-template-columns: 1fr; gap: 8px; }
  .calc-surface-summary { grid-template-columns: 1fr; gap: 6px; }
  .calc-ouverture-item { flex-wrap: wrap; }
  .calc-ouv-input { width: 46px; }
  .calc-ouv-type-group { order: -1; width: 100%; }
  .calc-result-table { font-size: 11px; }
  .calc-result-table thead th,
  .calc-result-table tbody td { padding: 7px 8px; }
  .calc-total-kpi { flex-direction: column; gap: 6px; text-align: center; }
  .calc-total-kpi-value { font-size: 20px; }
  .calc-field-input { font-size: 14px; padding: 8px 10px; }
  .calc-field-suffix { padding: 8px 10px 8px 0; }
  .calc-field-value { font-size: 14px; padding: 8px 10px; min-height: 36px; }
  .calc-export-card { padding: 16px; }
}