/* ==========================================================================
   calculator.css — calculator page layout, inputs, results, chart,
   amortization table, sidebar, comparison & what-if panels
   ========================================================================== */

/* ---------- Page header ---------- */
.calc-header {
  padding: 16px 0 8px;
}

.calc-header h1 {
  margin-bottom: 4px;
}

.calc-header .subtitle {
  color: var(--text-secondary);
  font-size: 14px;
}

.calc-header .rate-note {
  color: var(--text-tertiary);
  font-size: 12px;
  margin-top: 4px;
}

/* ---------- Page grid ---------- */
.calc-page {
  display: grid;
  grid-template-columns: 1fr 260px;
  gap: 24px;
  padding-bottom: 24px;
}

.calc-main {
  min-width: 0;
}

.calc-sidebar {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

/* ---------- Inputs / results side-by-side grid (desktop) ---------- */
.calc-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  min-width: 0;
}

.calc-col {
  min-width: 0;
}

.calc-col--results {
  border-left: 1px solid var(--border);
  padding-left: 24px;
}

/* ---------- Card ---------- */
.card {
  background: var(--bg-white);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 16px;
}

.card + .card {
  margin-top: 16px;
}

.card h2 {
  margin-bottom: 12px;
}

/* ---------- Tabs ---------- */
.calc-tabs {
  display: flex;
  gap: 4px;
  overflow-x: auto;
  border-bottom: 1px solid var(--border);
  margin-bottom: 16px;
  -ms-overflow-style: none;
  scrollbar-width: none;
}

.calc-tabs::-webkit-scrollbar {
  display: none;
}

.calc-tab {
  flex-shrink: 0;
  padding: 10px 16px;
  font-size: 14px;
  font-weight: 500;
  color: var(--text-secondary);
  background: transparent;
  border: none;
  border-bottom: 2px solid transparent;
}

.calc-tab.is-active {
  color: var(--primary);
  border-bottom-color: var(--primary);
}

.tab-panel {
  display: none;
}

.tab-panel.is-active {
  display: block;
}

/* ---------- Inputs ---------- */
.calc-inputs {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.input-group label {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  font-weight: 500;
  color: var(--text-primary);
  margin-bottom: 6px;
}

/* ---------- Tooltip ---------- */
.tooltip-wrap {
  position: relative;
  display: inline-flex;
}

.tooltip-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  border: none;
  padding: 0;
  background: var(--border);
  color: var(--text-secondary);
  font-size: 11px;
  font-weight: 700;
  font-style: italic;
  font-family: Georgia, "Times New Roman", serif;
  line-height: 1;
  cursor: pointer;
}

.tooltip-icon:hover,
.tooltip-icon:focus {
  background: var(--primary);
  color: #fff;
  outline: none;
}

.tooltip-text {
  position: absolute;
  bottom: calc(100% + 8px);
  left: 0;
  z-index: 30;
  width: 240px;
  max-width: 70vw;
  padding: 8px 10px;
  border-radius: var(--radius);
  background: var(--text-primary);
  color: #fff;
  font-size: 12px;
  font-weight: 400;
  line-height: 1.4;
  box-shadow: var(--shadow-md);
  opacity: 0;
  visibility: hidden;
  transform: translateY(4px);
  transition: opacity 0.15s ease, transform 0.15s ease;
  pointer-events: none;
}

.tooltip-icon:hover + .tooltip-text,
.tooltip-icon:focus + .tooltip-text,
.tooltip-wrap.is-active .tooltip-text {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.input-field {
  position: relative;
  display: flex;
  align-items: center;
  border: 1px solid var(--border-dark);
  border-radius: var(--radius);
  background: var(--bg-white);
  overflow: hidden;
  transition: border-color 0.15s ease;
}

.input-field:focus-within {
  border-color: var(--primary);
}

.input-field.is-invalid {
  border-color: var(--danger);
}

.input-error {
  margin-top: 6px;
  font-size: 12px;
  color: var(--danger);
}

.input-field .prefix,
.input-field .suffix {
  padding: 0 12px;
  font-size: 14px;
  color: var(--text-secondary);
  background: var(--bg-page);
  align-self: stretch;
  display: flex;
  align-items: center;
}

.input-field .prefix {
  border-right: 1px solid var(--border);
}

.input-field .suffix {
  border-left: 1px solid var(--border);
}

.input-field input {
  flex: 1;
  width: 100%;
  height: 44px;
  padding: 0 12px;
  border: none;
  outline: none;
  font-size: 15px;
  font-weight: 500;
  color: var(--text-primary);
  background: transparent;
  text-align: right;
}

.input-field .prefix + input {
  text-align: left;
}

.input-field input[type="date"] {
  text-align: left;
}

/* ---------- Slider ---------- */
.slider-row {
  margin-top: 8px;
}

.slider-row input[type="range"] {
  width: 100%;
  height: 4px;
  -webkit-appearance: none;
  appearance: none;
  background: var(--border);
  border-radius: 999px;
  outline: none;
}

.slider-row input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: var(--primary);
  cursor: pointer;
  border: 2px solid #fff;
  box-shadow: 0 0 0 1px var(--primary);
}

.slider-row input[type="range"]::-moz-range-thumb {
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: var(--primary);
  cursor: pointer;
  border: 2px solid #fff;
  box-shadow: 0 0 0 1px var(--primary);
}

.slider-range {
  display: flex;
  justify-content: space-between;
  font-size: 11px;
  color: var(--text-tertiary);
  margin-top: 4px;
}

/* ---------- Action buttons ---------- */
.calc-actions {
  display: flex;
  gap: 12px;
  margin-top: 8px;
}

.calc-actions .btn {
  flex: 1;
}

/* ---------- Results ---------- */
.results-card {
  background: var(--primary-light);
  border: 1px solid var(--primary-light);
  border-radius: var(--radius-lg);
  padding: 20px;
  text-align: center;
  margin-top: 20px;
}

.results-card .result-label {
  font-size: 13px;
  color: var(--text-secondary);
  margin-bottom: 4px;
}

.results-card .result-value {
  font-size: 32px;
  font-weight: 600;
  color: var(--primary);
  line-height: 1.2;
}

.results-headline {
  display: flex;
  gap: 12px;
  margin-top: 12px;
}

.headline-stat {
  flex: 1;
  background: var(--bg-white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 10px 12px;
  text-align: center;
}

.headline-stat .headline-label {
  font-size: 12px;
  color: var(--text-secondary);
  margin-bottom: 2px;
}

.headline-stat .headline-value {
  font-size: 18px;
  font-weight: 600;
  color: var(--text-primary);
}

.results-breakdown {
  display: flex;
  flex-direction: column;
  gap: 0;
  margin-top: 16px;
}

.result-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 10px 0;
  border-bottom: 1px solid var(--border);
  font-size: 14px;
}

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

.result-row .label {
  color: var(--text-secondary);
}

.result-row .value {
  font-weight: 600;
  color: var(--text-primary);
}

/* ---------- Result utility buttons (copy / share / print) ---------- */
.result-utils {
  display: flex;
  gap: 8px;
  margin-top: 16px;
  flex-wrap: wrap;
}

.result-utils .btn {
  flex: 1;
  min-width: 90px;
}

/* ---------- Chart ---------- */

.chart-toggle {
  display: flex;
  gap: 8px;
  margin-bottom: 12px;
}

.chart-toggle button {
  padding: 6px 14px;
  font-size: 12px;
  font-weight: 500;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: var(--bg-white);
  color: var(--text-secondary);
}

.chart-toggle button.is-active {
  border-color: var(--primary);
  color: var(--primary);
  background: var(--primary-light);
}

.chart-panel {
  display: none;
}

.chart-panel.is-active {
  display: block;
}

.chart-canvas-wrap {
  position: relative;
  max-width: 320px;
  margin: 0 auto;
}

.chart-canvas-wrap canvas {
  max-width: 100%;
  height: auto;
}

.chart-canvas-wrap--pie {
  max-width: 240px;
  margin: 20px auto 0;
}

.chart-canvas-wrap--wide {
  max-width: 100%;
}

.chart-detail {
  margin-top: 16px;
  padding: 14px 16px;
  background: var(--bg-page);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}

.chart-detail-year {
  font-size: 13px;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 8px;
}

.chart-detail-rows {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.chart-detail-row {
  display: flex;
  justify-content: space-between;
  font-size: 13px;
}

.chart-detail-row .label {
  color: var(--text-secondary);
}

.chart-detail-row .value {
  font-weight: 600;
  color: var(--text-primary);
}

.chart-detail-row.chart-detail-total {
  padding-top: 6px;
  border-top: 1px solid var(--border);
}

.chart-detail-row.chart-detail-total .value {
  color: var(--primary);
}

.chart-tooltip {
  position: absolute;
  display: none;
  pointer-events: none;
  background: rgba(20, 24, 38, 0.92);
  color: #fff;
  font-size: 12px;
  line-height: 1.5;
  padding: 6px 10px;
  border-radius: 6px;
  z-index: 1000;
  white-space: nowrap;
  transform: translate(0, -100%);
}

.chart-legend {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-top: 16px;
}

.chart-legend-item {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
}

.chart-legend-swatch {
  width: 12px;
  height: 12px;
  border-radius: 3px;
  flex-shrink: 0;
}

/* ---------- Comparison mode ---------- */
.comparison-panel {
  display: none;
  margin-top: 16px;
}

.comparison-panel.is-open {
  display: block;
}

.comparison-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

.comparison-col {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 12px;
}

.comparison-col h3 {
  margin-bottom: 8px;
  font-size: 13px;
  color: var(--text-secondary);
}

/* ---------- What-if panel ---------- */
.whatif-panel {
  display: none;
  margin-top: 16px;
  padding-top: 16px;
  border-top: 1px solid var(--border);
}

.whatif-panel.is-open {
  display: block;
}

/* ---------- Amortization table ---------- */
.amortization-card {
  margin-top: 16px;
}

.amortization-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 12px;
}

.amortization-header h2 {
  margin-bottom: 0;
}

.amortization-toggle {
  display: flex;
  gap: 8px;
}

.amortization-toggle button {
  padding: 6px 14px;
  font-size: 12px;
  font-weight: 500;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: var(--bg-white);
  color: var(--text-secondary);
}

.amortization-toggle button.is-active {
  border-color: var(--primary);
  color: var(--primary);
  background: var(--primary-light);
}

.table-wrap {
  overflow-x: auto;
}

.amortization-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
  white-space: nowrap;
}

.amortization-table th,
.amortization-table td {
  padding: 8px 12px;
  text-align: right;
  border-bottom: 1px solid var(--border);
}

.amortization-table th:first-child,
.amortization-table td:first-child {
  text-align: left;
}

.amortization-table tbody tr.year-end-row td {
  border-bottom: 2px solid var(--primary);
}

.amortization-table thead th {
  background: var(--bg-page);
  color: var(--text-secondary);
  font-weight: 500;
  position: sticky;
  top: 0;
}

/* ---------- Related calculators ---------- */
.related-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
  margin-top: 16px;
}

.related-card {
  display: block;
  padding: 14px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--bg-white);
  color: var(--text-primary);
  font-size: 13px;
  font-weight: 500;
  transition: border-color 0.15s ease;
}

.related-card:hover {
  border-color: var(--primary);
  text-decoration: none;
  color: var(--primary);
}

/* ---------- Sidebar ---------- */
.sidebar-card h3 {
  margin-bottom: 12px;
}

.quick-facts-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.quick-fact {
  display: flex;
  justify-content: space-between;
  font-size: 13px;
  padding: 6px 0;
  border-bottom: 1px solid var(--border);
}

.quick-fact:last-child {
  border-bottom: none;
}

.quick-fact .label {
  color: var(--text-secondary);
}

.quick-fact .value {
  font-weight: 600;
}

.sidebar-links li {
  margin-bottom: 8px;
}

.sidebar-links a {
  font-size: 13px;
  color: var(--text-secondary);
}

.sidebar-links a:hover {
  color: var(--primary);
}

/* ---------- Rating ---------- */
.rating-card {
  text-align: center;
}

.rating-buttons {
  display: flex;
  justify-content: center;
  gap: 16px;
  margin-top: 8px;
}

.rating-buttons button {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  border: 1px solid var(--border);
  background: var(--bg-white);
  font-size: 18px;
  color: var(--text-secondary);
}

.rating-buttons button.is-selected {
  border-color: var(--primary);
  color: var(--primary);
  background: var(--primary-light);
}

/* ---------- Disclaimer ---------- */
.disclaimer {
  margin-top: 16px;
  padding: 12px 16px;
  background: var(--bg-page);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-size: 12px;
  color: var(--text-tertiary);
}

/* ---------- SEO content ---------- */
.seo-content {
  margin-top: 24px;
  color: var(--text-secondary);
  font-size: 14px;
}

.seo-content h2,
.seo-content h3 {
  margin-top: 20px;
  margin-bottom: 8px;
  color: var(--text-primary);
}

.seo-content p {
  margin-bottom: 12px;
}

.seo-content ul,
.seo-content ol {
  margin: 0 0 12px;
  padding-left: 20px;
}

.seo-content li {
  margin-bottom: 4px;
}

.faq-item {
  margin-bottom: 16px;
}

.faq-item h3 {
  font-size: 14px;
  margin-bottom: 4px;
}

.faq-item p {
  margin-bottom: 0;
}

.disclaimer-text {
  margin-top: 20px;
  padding: 12px 16px;
  background: var(--bg-page);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-size: 12px;
  color: var(--text-tertiary);
}

/* ==========================================================================
   Mobile (max-width: 768px)
   ========================================================================== */
@media (max-width: 768px) {
  .tooltip-text {
    left: auto;
    right: 0;
    width: 200px;
  }

  .calc-page {
    grid-template-columns: 1fr;
  }

  .calc-grid {
    grid-template-columns: 1fr;
    gap: 0;
  }

  .calc-col--results {
    border-left: none;
    padding-left: 0;
    margin-top: 16px;
    padding-top: 16px;
    border-top: 1px solid var(--border);
  }

  .calc-sidebar {
    order: 3;
  }

  .calc-main {
    order: 1;
  }

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

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

  .results-card .result-value {
    font-size: 26px;
  }

  .headline-stat .headline-value {
    font-size: 15px;
  }

  .result-utils .btn {
    min-width: 0;
  }

  .amortization-header {
    flex-direction: column;
    align-items: flex-start;
    gap: 8px;
  }
}