/* ToolHub · Generales · Calculadora */

.general-popup-link {
  font: inherit;
}

.calculator-backdrop {
  z-index: 500;
}

.calculator-modal {
  position: relative;
  width: min(520px, 100%);
  max-height: min(92vh, 860px);
  overflow: auto;
  padding: 24px;
  border: 1px solid var(--border);
  border-radius: 20px;
  background: var(--panel);
  box-shadow: 0 30px 90px rgba(0, 0, 0, .48);
}

.calculator-head {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  align-items: flex-start;
  margin-bottom: 14px;
}

.calculator-head h2 {
  margin: 5px 0 0;
}

.calculator-head-actions {
  display: flex;
  gap: 8px;
  align-items: center;
}

.calculator-scientific-toggle,
.calculator-history-toggle,
.calculator-angle-button {
  min-height: 36px;
  padding: 0 11px;
  border: 1px solid var(--border);
  border-radius: 9px;
  background: var(--bg-soft);
  color: var(--muted);
  cursor: pointer;
  font: inherit;
  font-size: .8rem;
  font-weight: 800;
}

.calculator-scientific-toggle:hover,
.calculator-scientific-toggle[aria-pressed="true"],
.calculator-history-toggle:hover,
.calculator-angle-button:hover,
.calculator-angle-button.active {
  border-color: var(--purple);
  background: var(--purple-soft);
  color: var(--text);
}

.calculator-close {
  position: static;
}

.calculator-toolbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 8px;
  min-height: 38px;
  margin-bottom: 10px;
}

.calculator-angle-group {
  display: flex;
  gap: 6px;
}

.calculator-display {
  min-height: 120px;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: 14px;
  margin-bottom: 10px;
  border: 1px solid var(--border);
  border-radius: 14px;
  background: var(--bg-soft);
}

.calculator-expression {
  min-height: 24px;
  margin-bottom: 5px;
  color: var(--muted);
  text-align: right;
  font-size: .82rem;
  overflow-wrap: anywhere;
}

.calculator-input {
  width: 100%;
  padding: 0;
  border: 0;
  outline: 0;
  background: transparent;
  color: var(--text);
  text-align: right;
  font: inherit;
  font-size: clamp(2rem, 8vw, 3rem);
  font-weight: 900;
  letter-spacing: -.035em;
}

.calculator-input.is-error {
  color: #ff9c9c;
}

.calculator-grid {
  display: grid;
  gap: 8px;
}

.calculator-basic-grid {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.calculator-scientific-grid {
  grid-template-columns: repeat(6, minmax(0, 1fr));
  margin-bottom: 8px;
}

.calculator-grid button {
  min-height: 50px;
  padding: 5px;
  border: 1px solid var(--border);
  border-radius: 11px;
  background: var(--bg-soft);
  color: var(--text);
  cursor: pointer;
  font: inherit;
  font-weight: 800;
  transition: transform .12s ease, border-color .12s ease, background .12s ease;
}

.calculator-grid button:hover {
  transform: translateY(-1px);
  border-color: var(--blue);
}

.calculator-grid button:active {
  transform: translateY(0);
}

.calculator-grid .calc-muted {
  color: var(--muted);
}

.calculator-grid .calc-operator {
  border-color: rgba(155, 104, 255, .34);
  background: var(--purple-soft);
  color: var(--purple);
  font-size: 1.15rem;
}

.calculator-grid .calc-equals {
  border-color: var(--blue);
  background: var(--blue);
  color: #06111f;
  font-size: 1.15rem;
}

.calculator-history {
  margin-bottom: 10px;
  padding: 11px;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: var(--bg-soft);
}

.calculator-history-head {
  display: flex;
  justify-content: space-between;
  gap: 10px;
  align-items: center;
  margin-bottom: 7px;
}

.calculator-history-head button {
  padding: 3px;
  border: 0;
  background: none;
  color: var(--muted);
  cursor: pointer;
}

.calculator-history-list {
  display: grid;
  gap: 6px;
  max-height: 140px;
  overflow: auto;
}

.calculator-history-entry {
  width: 100%;
  padding: 8px 9px;
  border: 1px solid var(--border);
  border-radius: 9px;
  background: var(--panel);
  color: var(--text);
  text-align: left;
  cursor: pointer;
}

.calculator-history-entry small {
  display: block;
  color: var(--muted);
  overflow-wrap: anywhere;
}

.calculator-history-empty {
  color: var(--muted);
  font-size: .84rem;
}

.calculator-help {
  margin: 11px 0 0;
  color: var(--muted);
  text-align: center;
  font-size: .76rem;
}

@media (max-width: 560px) {
  .calculator-modal {
    padding: 16px;
  }

  .calculator-head {
    flex-direction: column;
  }

  .calculator-head-actions {
    width: 100%;
    justify-content: space-between;
  }

  .calculator-scientific-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}