/* Calculators Layout & Styles */

.calc-nav-tabs {
  display: flex;
  gap: 0.5rem;
  overflow-x: auto;
  padding-bottom: 0.75rem;
  margin-bottom: 2rem;
  scrollbar-width: thin;
}

.calc-tab {
  padding: 0.55rem 1.1rem;
  border-radius: 9999px;
  white-space: nowrap;
  border: 1px solid var(--border);
  background: var(--surface);
  font-size: 0.875rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.15s ease;
  color: var(--text);
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
}

.calc-tab:hover,
.calc-tab.active {
  background: var(--primary);
  color: #fff;
  border-color: var(--primary);
  box-shadow: 0 2px 6px rgba(2, 132, 199, 0.25);
}

.calc-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  padding: 2.25rem;
  max-width: 960px;
  margin: 0 auto 3rem;
}

.calc-split {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 2.5rem;
  align-items: flex-start;
}

.calc-inputs {
  display: flex;
  flex-direction: column;
  gap: 1.35rem;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
}

.form-group label {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.form-group input[type="number"],
.form-group input[type="text"],
.form-group select {
  padding: 0.65rem 0.85rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--surface);
  font-size: 1rem;
  outline: none;
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
  color: var(--text);
}

.form-group input:focus,
.form-group select:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px var(--primary-light);
}

.range-input {
  width: 100%;
  accent-color: var(--primary);
  margin-top: 0.25rem;
  cursor: pointer;
}

.btn-group {
  display: flex;
  gap: 0.75rem;
  margin-top: 0.75rem;
}

/* Calculator Results Panel */
.calc-results {
  background: var(--surface-subtle);
  border-radius: var(--radius);
  padding: 1.75rem;
  display: flex;
  flex-direction: column;
  border: 1px solid var(--border);
  gap: 1rem;
}

.result-highlight {
  text-align: center;
  padding-bottom: 1.25rem;
  border-bottom: 1px solid var(--border);
}

.result-highlight .title {
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.result-highlight .value {
  font-size: 2.25rem;
  font-weight: 800;
  color: var(--primary);
  margin-top: 0.25rem;
  letter-spacing: -0.02em;
}

.result-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.95rem;
  padding: 0.4rem 0;
  color: var(--text);
}

.result-row span:last-child {
  font-weight: 700;
}

.calc-visual-bar {
  height: 14px;
  border-radius: 7px;
  background: #e2e8f0;
  overflow: hidden;
  display: flex;
  margin-top: 0.75rem;
}

.bar-principal {
  background: var(--primary);
  height: 100%;
  transition: width 0.3s ease;
}

.bar-interest {
  background: #f59e0b;
  height: 100%;
  transition: width 0.3s ease;
}

.bar-legend {
  display: flex;
  justify-content: space-between;
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-top: 0.35rem;
}

.calc-error-msg {
  background: var(--danger-light);
  color: var(--danger);
  padding: 0.65rem 0.9rem;
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
  font-weight: 600;
  margin-top: 0.5rem;
  border: 1px solid rgba(239, 68, 68, 0.25);
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

/* Formula & Assumptions Box */
.calc-notes {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem;
  margin-top: 2rem;
  font-size: 0.9rem;
  color: var(--text-muted);
  line-height: 1.6;
}

.calc-notes h4 {
  color: var(--text);
  margin-bottom: 0.5rem;
}

.calc-notes code {
  background: var(--surface-subtle);
  padding: 0.15rem 0.4rem;
  border-radius: 3px;
  color: var(--primary);
  font-size: 0.85rem;
}