/* === Calculator Widget === */
.calculator-widget {
  background: var(--color-white);
  border-radius: var(--radius);
  box-shadow: var(--shadow-lg);
  padding: 2rem;
  margin-top: 1.5rem;
}

/* === Tabs === */
.calc-tabs {
  display: flex;
  gap: 0.5rem;
  margin-bottom: 1.5rem;
  border-bottom: 2px solid var(--color-border);
  padding-bottom: 0;
}

.calc-tab {
  padding: 0.6rem 1.25rem;
  border: none;
  background: none;
  font-family: var(--font-stack);
  font-size: 0.95rem;
  color: var(--color-text-light);
  cursor: pointer;
  border-bottom: 2px solid transparent;
  margin-bottom: -2px;
  transition: color var(--transition), border-color var(--transition);
  min-height: 44px;
}

.calc-tab:hover {
  color: var(--color-text);
}

.calc-tab.active {
  color: var(--color-accent);
  border-bottom-color: var(--color-accent);
  font-weight: 600;
}

/* === Form Elements === */
.calc-group {
  margin-bottom: 1.25rem;
}

.calc-label {
  display: block;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 0.4rem;
}

.calc-input {
  width: 100%;
  padding: 0.65rem 0.85rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  font-family: var(--font-stack);
  font-size: 1rem;
  color: var(--color-text);
  background: var(--color-white);
  transition: border-color var(--transition), box-shadow var(--transition);
  min-height: 44px;
}

.calc-input:focus {
  outline: none;
  border-color: var(--color-accent);
  box-shadow: 0 0 0 2px rgba(0, 115, 170, 0.15);
}

.calc-input::placeholder {
  color: var(--color-text-light);
}

.calc-select {
  width: 100%;
  padding: 0.65rem 0.85rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  font-family: var(--font-stack);
  font-size: 1rem;
  color: var(--color-text);
  background: var(--color-white);
  min-height: 44px;
  cursor: pointer;
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%23646970' fill='none' stroke-width='1.5'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 0.85rem center;
  padding-right: 2.5rem;
}

.calc-select:focus {
  outline: none;
  border-color: var(--color-accent);
  box-shadow: 0 0 0 2px rgba(0, 115, 170, 0.15);
}

/* === Inline row (multiple inputs side by side) === */
.calc-row {
  display: flex;
  gap: 1rem;
  align-items: flex-end;
}

.calc-row .calc-group {
  flex: 1;
}

/* === Buttons === */
.calc-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  padding: 0.65rem 1.5rem;
  border: none;
  border-radius: var(--radius-pill);
  font-family: var(--font-stack);
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  transition: background var(--transition), transform var(--transition);
  min-height: 44px;
}

.calc-btn:active {
  transform: scale(0.97);
}

.calc-btn-primary {
  background: var(--color-accent);
  color: var(--color-white);
}

.calc-btn-primary:hover {
  background: var(--color-accent-hover);
}

.calc-btn-secondary {
  background: var(--color-bg);
  color: var(--color-text);
  border: 1px solid var(--color-border);
}

.calc-btn-secondary:hover {
  background: var(--color-border);
}

.calc-btn-small {
  padding: 0.4rem 1rem;
  font-size: 0.85rem;
  min-height: 36px;
}

.calc-btn-danger {
  background: var(--color-error);
  color: var(--color-white);
}

.calc-btn-danger:hover {
  background: #b32d2e;
}

/* === Results === */
.calc-results {
  margin-top: 1.5rem;
  padding: 1.25rem;
  background: var(--color-bg);
  border-radius: var(--radius);
  border: 1px solid var(--color-border);
}

.calc-results.hidden {
  display: none;
}

.calc-result-row {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  padding: 0.5rem 0;
  border-bottom: 1px solid var(--color-border);
}

.calc-result-row:last-child {
  border-bottom: none;
}

.calc-result-label {
  font-size: 0.9rem;
  color: var(--color-text-light);
}

.calc-result-value {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--color-text);
}

.calc-result-highlight {
  font-size: 1.4rem;
  color: var(--color-accent);
}

/* === Swap button === */
.swap-btn {
  background: none;
  border: 1px solid var(--color-border);
  border-radius: 50%;
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  font-size: 1.2rem;
  color: var(--color-text-light);
  transition: background var(--transition), color var(--transition);
  flex-shrink: 0;
  align-self: center;
}

.swap-btn:hover {
  background: var(--color-bg);
  color: var(--color-accent);
}

/* === Dynamic list (for gennemsnit) === */
.calc-dynamic-list {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.calc-dynamic-row {
  display: flex;
  gap: 0.5rem;
  align-items: center;
}

.calc-dynamic-row .calc-input {
  flex: 1;
}

.calc-remove-btn {
  background: none;
  border: none;
  color: var(--color-error);
  cursor: pointer;
  font-size: 1.3rem;
  padding: 0.25rem;
  line-height: 1;
  min-width: 32px;
  min-height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.calc-remove-btn:hover {
  color: #b32d2e;
}

/* === Shape selector === */
.shape-selector {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 1.25rem;
}

.shape-btn {
  padding: 0.5rem 1rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-pill);
  background: var(--color-white);
  font-family: var(--font-stack);
  font-size: 0.85rem;
  color: var(--color-text);
  cursor: pointer;
  transition: all var(--transition);
  min-height: 36px;
}

.shape-btn:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
}

.shape-btn.active {
  background: var(--color-accent);
  border-color: var(--color-accent);
  color: var(--color-white);
}

/* === Formula display === */
.calc-formula {
  background: var(--color-primary);
  color: var(--color-white);
  padding: 0.75rem 1rem;
  border-radius: var(--radius);
  font-family: monospace;
  font-size: 0.95rem;
  margin-bottom: 1.25rem;
  text-align: center;
}

/* === SVG diagram === */
.calc-diagram {
  text-align: center;
  margin-bottom: 1.25rem;
}

.calc-diagram svg {
  max-width: 200px;
  height: auto;
}

/* === Responsive === */
@media (max-width: 768px) {
  .calculator-widget {
    padding: 1.25rem;
  }

  .calc-row {
    flex-direction: column;
    gap: 0;
  }

  .calc-row .swap-btn {
    align-self: center;
    transform: rotate(90deg);
    margin: 0.25rem 0;
  }

  .calc-tabs {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
  }

  .calc-tab {
    padding: 0.5rem 0.75rem;
    font-size: 0.85rem;
    white-space: nowrap;
  }

  .shape-selector {
    gap: 0.35rem;
  }

  .shape-btn {
    padding: 0.4rem 0.75rem;
    font-size: 0.8rem;
  }
}