/* Widget styles — reusable across all calculator widgets */

/* ===== Widget Container ===== */
.widget {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  max-width: 640px;
  margin: 0 auto;
}

.widget__title {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: var(--space-lg);
  color: var(--color-text);
}

/* ===== Widget Form ===== */
.widget__form {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.widget__row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-md);
  align-items: end;
}

.widget__row--full {
  grid-template-columns: 1fr;
}

.widget__row--triple {
  grid-template-columns: 1fr auto 1fr;
}

/* ===== Widget Field Group ===== */
.widget__group {
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
}

.widget__label {
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--color-text-secondary);
}

.widget__input,
.widget__select {
  padding: var(--space-sm) var(--space-md);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-bg-secondary);
  color: var(--color-text);
  font-family: var(--font-mono);
  font-size: 1rem;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
  min-height: 44px;
}

.widget__input:focus,
.widget__select:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px var(--color-primary-light);
  outline: none;
}

.widget__input::placeholder {
  color: var(--color-text-tertiary);
  font-family: var(--font-sans);
}

.widget__input[readonly] {
  background: var(--color-bg-tertiary);
  color: var(--color-text-tertiary);
  cursor: default;
}

/* ===== Widget Textarea ===== */
.widget__textarea {
  padding: var(--space-sm) var(--space-md);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-bg-secondary);
  color: var(--color-text);
  font-family: var(--font-mono);
  font-size: 1rem;
  resize: vertical;
  min-height: 80px;
  width: 100%;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.widget__textarea:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px var(--color-primary-light);
  outline: none;
}

/* ===== Widget Select ===== */
.widget__select {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%2364748b' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 12px center;
  padding-right: 36px;
  cursor: pointer;
}

/* ===== Widget Operator (center of fraction row) ===== */
.widget__operator {
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-mono);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-primary);
  min-width: 44px;
  height: 44px;
}

/* ===== Widget Buttons ===== */
.widget__actions {
  display: flex;
  gap: var(--space-sm);
}

.widget__btn {
  padding: var(--space-sm) var(--space-lg);
  border-radius: var(--radius-md);
  font-weight: 600;
  font-size: 0.9rem;
  min-height: 44px;
  transition: all var(--transition-fast);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-xs);
}

.widget__btn--primary {
  background: var(--color-primary);
  color: var(--color-primary-text);
}

.widget__btn--primary:hover {
  background: var(--color-primary-hover);
}

.widget__btn--primary:active {
  transform: scale(0.97);
}

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

.widget__btn--secondary:hover {
  background: var(--color-surface-hover);
  color: var(--color-text);
}

.widget__btn--accent {
  background: var(--color-accent-light);
  color: var(--color-accent);
}

.widget__btn--accent:hover {
  filter: brightness(0.95);
}

/* ===== Widget Preset Row ===== */
.widget__presets {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-xs);
}

.widget__preset {
  padding: var(--space-xs) var(--space-sm);
  border-radius: var(--radius-sm);
  background: var(--color-calc-btn);
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 500;
  transition: background var(--transition-fast);
  min-height: 32px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

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

.widget__preset:active {
  background: var(--color-calc-btn-active);
}

/* ===== Widget Result Area ===== */
.widget__result {
  background: var(--color-bg-secondary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-md) var(--space-lg);
  min-height: 48px;
  display: flex;
  align-items: center;
  font-family: var(--font-mono);
  font-size: 1.1rem;
  color: var(--color-text);
  word-break: break-all;
}

.widget__result--large {
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--color-primary);
  min-height: 60px;
}

/* ===== Widget Result Grid (for multi-value results) ===== */
.widget__result-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-sm);
}

.widget__result-item {
  background: var(--color-bg-secondary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-sm) var(--space-md);
}

.widget__result-item--full {
  grid-column: 1 / -1;
}

.widget__result-item__label {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-text-tertiary);
  font-weight: 600;
  margin-bottom: var(--space-xs);
}

.widget__result-item__value {
  font-family: var(--font-mono);
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--color-primary);
  word-break: break-all;
}

/* ===== Inline Result Spans ===== */
.widget-result__expression {
  color: var(--color-text-secondary);
  font-size: 0.9rem;
  margin-right: var(--space-sm);
}

.widget-result__value {
  font-weight: 700;
  color: var(--color-primary);
}

.widget-result__decimal {
  color: var(--color-text-tertiary);
  font-size: 0.85rem;
  margin-left: var(--space-sm);
}

/* ===== Swap Button ===== */
.widget__swap {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-md);
  background: var(--color-bg-tertiary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  transition: all var(--transition-fast);
  align-self: center;
}

.widget__swap:hover {
  background: var(--color-primary-light);
  color: var(--color-primary);
}

/* ===== Fraction Display ===== */
.widget__fraction-group {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
}

.widget__fraction-num,
.widget__fraction-den {
  width: 100%;
  text-align: center;
}

.widget__fraction-line {
  width: 100%;
  height: 2px;
  background: var(--color-border-strong);
}

/* ===== Responsive ===== */
@media (max-width: 768px) {
  .widget {
    padding: var(--space-md);
  }

  .widget__row {
    grid-template-columns: 1fr;
  }

  .widget__row--triple {
    grid-template-columns: 1fr;
  }

  .widget__result-grid {
    grid-template-columns: 1fr;
  }

  .widget__result--large {
    font-size: 1.2rem;
  }
}

@media (max-width: 480px) {
  .widget {
    padding: var(--space-sm);
    border-radius: var(--radius-md);
  }

  .widget__actions {
    flex-direction: column;
  }

  .widget__btn {
    width: 100%;
  }
}