/* ============================================================
   IRA Calculator — ira.css
   Namespace: irac-* (IRA Calculator)
   CalculatorFix template-matched styles
   ============================================================ */

/* ---------- CSS Variables (mirror site tokens) ---------- */
:root {
  --irac-primary:       #2563eb;
  --irac-primary-dark:  #1d4ed8;
  --irac-primary-light: #eff6ff;
  --irac-accent:        #10b981;
  --irac-accent-dark:   #059669;
  --irac-warn:          #f59e0b;
  --irac-danger:        #ef4444;
  --irac-text:          #1e293b;
  --irac-text-muted:    #64748b;
  --irac-border:        #e2e8f0;
  --irac-bg:            #f8fafc;
  --irac-card:          #ffffff;
  --irac-radius:        10px;
  --irac-shadow:        0 1px 4px rgba(0,0,0,.08), 0 4px 16px rgba(0,0,0,.05);
  --irac-shadow-lg:     0 4px 24px rgba(37,99,235,.12);
  --irac-transition:    .2s ease;
  --irac-font:          'Segoe UI', system-ui, -apple-system, sans-serif;
}

/* ---------- Wrapper ---------- */
.irac-wrapper {
  font-family: var(--irac-font);
  color: var(--irac-text);
  line-height: 1.6;
  max-width: 100%;
  overflow-x: hidden;
  box-sizing: border-box;
}

.irac-wrapper *, .irac-wrapper *::before, .irac-wrapper *::after {
  box-sizing: border-box;
}

/* ---------- Calculator Card ---------- */
.irac-card {
  background: var(--irac-card);
  border: 1px solid var(--irac-border);
  border-radius: var(--irac-radius);
  box-shadow: var(--irac-shadow);
  overflow: hidden;
  margin-bottom: 1.5rem;
}

.irac-card-header {
  background: linear-gradient(135deg, var(--irac-primary) 0%, #1e40af 100%);
  color: #fff;
  padding: .85rem 1.25rem;
  display: flex;
  align-items: center;
  gap: .55rem;
  font-size: 1rem;
  font-weight: 600;
  letter-spacing: .01em;
}

.irac-card-header svg {
  flex-shrink: 0;
  opacity: .9;
}

.irac-card-body {
  padding: 1.25rem;
}

/* ---------- Tab Bar ---------- */
.irac-tabs {
  display: flex;
  gap: 0;
  border-bottom: 2px solid var(--irac-border);
  margin-bottom: 1.1rem;
  flex-wrap: wrap;
}

.irac-tab-btn {
  background: none;
  border: none;
  padding: .55rem 1rem;
  font-size: .82rem;
  font-weight: 500;
  color: var(--irac-text-muted);
  cursor: pointer;
  border-bottom: 2px solid transparent;
  margin-bottom: -2px;
  transition: color var(--irac-transition), border-color var(--irac-transition);
  white-space: nowrap;
}

.irac-tab-btn:hover { color: var(--irac-primary); }

.irac-tab-btn.active {
  color: var(--irac-primary);
  border-bottom-color: var(--irac-primary);
  font-weight: 600;
}

.irac-tab-panel { display: none; }
.irac-tab-panel.active { display: block; }

/* ---------- Form Grid ---------- */
.irac-form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: .85rem;
}

@media (max-width: 600px) {
  .irac-form-grid { grid-template-columns: 1fr; }
}

.irac-field {
  display: flex;
  flex-direction: column;
  gap: .3rem;
  min-width: 0;
}

.irac-field.full { grid-column: 1 / -1; }

.irac-label {
  font-size: .78rem;
  font-weight: 600;
  color: var(--irac-text);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.irac-label-hint {
  font-weight: 400;
  color: var(--irac-text-muted);
  font-size: .72rem;
}

.irac-input-wrap {
  position: relative;
  display: flex;
  align-items: center;
}

.irac-input-prefix,
.irac-input-suffix {
  position: absolute;
  font-size: .82rem;
  color: var(--irac-text-muted);
  font-weight: 500;
  pointer-events: none;
  user-select: none;
}

.irac-input-prefix { left: .65rem; }
.irac-input-suffix { right: .65rem; }

.irac-input {
  width: 100%;
  padding: .52rem .65rem;
  border: 1.5px solid var(--irac-border);
  border-radius: 7px;
  font-size: .88rem;
  color: var(--irac-text);
  background: #fff;
  transition: border-color var(--irac-transition), box-shadow var(--irac-transition);
  outline: none;
  box-sizing: border-box;
}

.irac-input:focus {
  border-color: var(--irac-primary);
  box-shadow: 0 0 0 3px rgba(37,99,235,.12);
}

.irac-input.has-prefix { padding-left: 1.6rem; }
.irac-input.has-suffix { padding-right: 1.6rem; }

.irac-select {
  width: 100%;
  padding: .52rem .65rem;
  border: 1.5px solid var(--irac-border);
  border-radius: 7px;
  font-size: .88rem;
  color: var(--irac-text);
  background: #fff;
  cursor: pointer;
  outline: none;
  transition: border-color var(--irac-transition);
  box-sizing: border-box;
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' fill='none'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%2364748b' stroke-width='1.6' stroke-linecap='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right .7rem center;
  padding-right: 2rem;
}

.irac-select:focus {
  border-color: var(--irac-primary);
  box-shadow: 0 0 0 3px rgba(37,99,235,.12);
}

.irac-helper {
  font-size: .7rem;
  color: var(--irac-text-muted);
  margin-top: .1rem;
}

/* ---------- Action Buttons ---------- */
.irac-btn-row {
  display: flex;
  gap: .6rem;
  margin-top: 1rem;
  flex-wrap: wrap;
}

.irac-btn {
  padding: .6rem 1.4rem;
  border-radius: 7px;
  font-size: .88rem;
  font-weight: 600;
  cursor: pointer;
  border: none;
  transition: background var(--irac-transition), transform .1s, box-shadow var(--irac-transition);
  display: inline-flex;
  align-items: center;
  gap: .4rem;
}

.irac-btn:active { transform: translateY(1px); }

.irac-btn-primary {
  background: var(--irac-primary);
  color: #fff;
  box-shadow: 0 2px 8px rgba(37,99,235,.25);
}
.irac-btn-primary:hover {
  background: var(--irac-primary-dark);
  box-shadow: 0 4px 14px rgba(37,99,235,.35);
}

.irac-btn-secondary {
  background: var(--irac-bg);
  color: var(--irac-text-muted);
  border: 1.5px solid var(--irac-border);
}
.irac-btn-secondary:hover {
  background: #f1f5f9;
  color: var(--irac-text);
}

/* ---------- Results Panel ---------- */
.irac-results {
  display: none;
  animation: irac-fadeIn .35s ease;
}

.irac-results.visible { display: block; }

@keyframes irac-fadeIn {
  from { opacity: 0; transform: translateY(6px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* Summary KPI Strip */
.irac-kpi-strip {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: .75rem;
  margin-bottom: 1rem;
}

@media (max-width: 540px) {
  .irac-kpi-strip { grid-template-columns: 1fr 1fr; }
}

.irac-kpi {
  background: var(--irac-bg);
  border: 1px solid var(--irac-border);
  border-radius: 8px;
  padding: .75rem .9rem;
  text-align: center;
}

.irac-kpi-label {
  font-size: .68rem;
  font-weight: 600;
  color: var(--irac-text-muted);
  text-transform: uppercase;
  letter-spacing: .04em;
  margin-bottom: .25rem;
}

.irac-kpi-value {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--irac-primary);
  word-break: break-all;
}

.irac-kpi.highlight {
  background: var(--irac-primary-light);
  border-color: #bfdbfe;
}

.irac-kpi.highlight .irac-kpi-value { color: #1d4ed8; }

/* Comparison Table */
.irac-compare-table-wrap {
  overflow-x: auto;
  width: 100%;
  margin-bottom: 1rem;
  border: 1px solid var(--irac-border);
  border-radius: 8px;
  -webkit-overflow-scrolling: touch;
}

.irac-compare-table {
  width: 100%;
  border-collapse: collapse;
  font-size: .82rem;
  min-width: 480px;
}

.irac-compare-table thead th {
  background: #f1f5f9;
  padding: .6rem .8rem;
  text-align: right;
  font-size: .72rem;
  font-weight: 700;
  color: var(--irac-text-muted);
  text-transform: uppercase;
  letter-spacing: .04em;
  border-bottom: 1px solid var(--irac-border);
}

.irac-compare-table thead th:first-child { text-align: left; }

.irac-compare-table tbody td {
  padding: .55rem .8rem;
  border-bottom: 1px solid #f1f5f9;
  text-align: right;
  color: var(--irac-text);
}

.irac-compare-table tbody td:first-child {
  text-align: left;
  font-weight: 500;
  color: var(--irac-text-muted);
}

.irac-compare-table tbody tr:last-child td { border-bottom: none; }

.irac-compare-table tbody tr.irac-highlight-row td {
  background: var(--irac-primary-light);
  font-weight: 700;
  color: var(--irac-primary);
}

.irac-compare-table tbody tr.irac-highlight-row td:first-child {
  color: var(--irac-primary-dark);
}

.irac-badge {
  display: inline-block;
  font-size: .65rem;
  font-weight: 700;
  padding: .15rem .4rem;
  border-radius: 20px;
  margin-left: .35rem;
  vertical-align: middle;
}

.irac-badge-green { background: #d1fae5; color: #065f46; }
.irac-badge-blue  { background: #dbeafe; color: #1d4ed8; }

/* Conclusion banner */
.irac-conclusion {
  background: linear-gradient(135deg, #eff6ff, #dbeafe);
  border: 1px solid #bfdbfe;
  border-radius: 8px;
  padding: .75rem 1rem;
  font-size: .82rem;
  color: #1e3a8a;
  margin-bottom: 1rem;
  line-height: 1.5;
}

/* Chart Container */
.irac-chart-wrap {
  background: #fff;
  border: 1px solid var(--irac-border);
  border-radius: 8px;
  padding: .75rem .9rem;
  margin-bottom: 1rem;
}

.irac-chart-title {
  font-size: .75rem;
  font-weight: 700;
  color: var(--irac-text-muted);
  text-transform: uppercase;
  letter-spacing: .04em;
  margin-bottom: .6rem;
}

.irac-chart-canvas { max-height: 240px; }

/* Annual Schedule Toggle */
.irac-schedule-wrap {
  margin-top: .5rem;
}

.irac-schedule-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: .5rem;
  margin-bottom: .6rem;
}

.irac-schedule-title {
  font-size: .8rem;
  font-weight: 700;
  color: var(--irac-text);
}

.irac-view-toggle {
  display: flex;
  gap: 0;
  border: 1.5px solid var(--irac-border);
  border-radius: 6px;
  overflow: hidden;
}

.irac-view-btn {
  background: none;
  border: none;
  padding: .28rem .75rem;
  font-size: .72rem;
  font-weight: 600;
  cursor: pointer;
  color: var(--irac-text-muted);
  transition: background var(--irac-transition), color var(--irac-transition);
}

.irac-view-btn.active {
  background: var(--irac-primary);
  color: #fff;
}

.irac-schedule-table-wrap {
  overflow-x: auto;
  width: 100%;
  max-height: 320px;
  border: 1px solid var(--irac-border);
  border-radius: 8px;
  -webkit-overflow-scrolling: touch;
}

.irac-schedule-table {
  width: 100%;
  border-collapse: collapse;
  font-size: .78rem;
  min-width: 560px;
}

.irac-schedule-table thead th {
  background: #f1f5f9;
  padding: .5rem .65rem;
  text-align: right;
  font-size: .68rem;
  font-weight: 700;
  color: var(--irac-text-muted);
  text-transform: uppercase;
  letter-spacing: .04em;
  position: sticky;
  top: 0;
  z-index: 1;
  border-bottom: 1px solid var(--irac-border);
}

.irac-schedule-table thead th:first-child { text-align: left; }

.irac-schedule-table tbody td {
  padding: .42rem .65rem;
  border-bottom: 1px solid #f8fafc;
  text-align: right;
  color: var(--irac-text);
}

.irac-schedule-table tbody td:first-child { text-align: left; font-weight: 600; }

.irac-schedule-table tbody tr:nth-child(even) td { background: #fafbfc; }

/* ---------- Info Callout ---------- */
.irac-callout {
  display: flex;
  gap: .65rem;
  align-items: flex-start;
  background: #fffbeb;
  border: 1px solid #fde68a;
  border-radius: 8px;
  padding: .7rem .9rem;
  font-size: .79rem;
  color: #92400e;
  margin-bottom: 1rem;
}

.irac-callout svg { flex-shrink: 0; margin-top: .1rem; }

/* ---------- Article Styles ---------- */
.irac-article h2 {
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--irac-text);
  margin: 2rem 0 .6rem;
  padding-top: .25rem;
  border-top: 2px solid var(--irac-primary-light);
}

.irac-article h3 {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--irac-text);
  margin: 1.4rem 0 .45rem;
}

.irac-article h4 {
  font-size: .9rem;
  font-weight: 700;
  color: var(--irac-text-muted);
  margin: 1.1rem 0 .3rem;
  text-transform: uppercase;
  letter-spacing: .05em;
}

.irac-article p {
  margin: 0 0 .9rem;
  color: var(--irac-text);
  font-size: .92rem;
}

.irac-article ul, .irac-article ol {
  padding-left: 1.4rem;
  margin: 0 0 .9rem;
}

.irac-article li { margin-bottom: .35rem; font-size: .92rem; }

.irac-article strong { color: var(--irac-text); font-weight: 700; }

/* IRA Type Comparison Grid */
.irac-type-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(210px, 1fr));
  gap: .85rem;
  margin: 1rem 0 1.4rem;
}

.irac-type-card {
  background: var(--irac-bg);
  border: 1px solid var(--irac-border);
  border-radius: 9px;
  padding: .9rem 1rem;
}

.irac-type-card-icon {
  font-size: 1.4rem;
  margin-bottom: .4rem;
}

.irac-type-card h4 {
  font-size: .82rem;
  font-weight: 700;
  color: var(--irac-primary);
  margin: 0 0 .35rem;
  text-transform: none;
  letter-spacing: 0;
}

.irac-type-card p {
  font-size: .78rem;
  color: var(--irac-text-muted);
  margin: 0;
}

/* Formula Box */
.irac-formula {
  background: #1e293b;
  color: #e2e8f0;
  border-radius: 8px;
  padding: .85rem 1.1rem;
  font-family: 'Courier New', Courier, monospace;
  font-size: .85rem;
  margin: .75rem 0 1rem;
  overflow-x: auto;
  white-space: nowrap;
  width: 100%;
  -webkit-overflow-scrolling: touch;
}

/* Limit Table */
.irac-limit-table-wrap {
  overflow-x: auto;
  width: 100%;
  border: 1px solid var(--irac-border);
  border-radius: 8px;
  margin: .75rem 0 1.2rem;
  -webkit-overflow-scrolling: touch;
}

.irac-limit-table {
  width: 100%;
  border-collapse: collapse;
  font-size: .82rem;
  min-width: 420px;
}

.irac-limit-table thead th {
  background: var(--irac-primary);
  color: #fff;
  padding: .55rem .8rem;
  text-align: left;
  font-weight: 700;
  font-size: .75rem;
}

.irac-limit-table tbody td {
  padding: .5rem .8rem;
  border-bottom: 1px solid #f1f5f9;
  color: var(--irac-text);
}

.irac-limit-table tbody tr:last-child td { border-bottom: none; }
.irac-limit-table tbody tr:nth-child(even) td { background: #fafbfc; }

/* FAQ accordion */
.faq-item {
  border: 1px solid var(--irac-border);
  border-radius: 8px;
  margin-bottom: .5rem;
  overflow: hidden;
}

.faq-question {
  width: 100%;
  background: var(--irac-bg);
  border: none;
  padding: .8rem 1rem;
  text-align: left;
  font-size: .88rem;
  font-weight: 600;
  color: var(--irac-text);
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: .5rem;
  transition: background var(--irac-transition);
}

.faq-question:hover { background: #f1f5f9; }

.faq-question .faq-icon {
  flex-shrink: 0;
  width: 18px;
  height: 18px;
  background: var(--irac-primary-light);
  color: var(--irac-primary);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: .75rem;
  font-weight: 700;
  transition: transform var(--irac-transition);
}

.faq-item.open .faq-icon { transform: rotate(45deg); }

.faq-answer {
  display: none;
  padding: .7rem 1rem .9rem;
  font-size: .85rem;
  color: var(--irac-text-muted);
  border-top: 1px solid var(--irac-border);
  background: #fff;
  line-height: 1.6;
}

.faq-item.open .faq-answer { display: block; }

/* ---------- Disclaimer ---------- */
.irac-disclaimer {
  background: #f8fafc;
  border: 1px solid #e2e8f0;
  border-left: 3px solid var(--irac-warn);
  border-radius: 6px;
  padding: .65rem .9rem;
  font-size: .75rem;
  color: var(--irac-text-muted);
  margin-top: 1.5rem;
}

/* ---------- Responsive Tweaks ---------- */
@media (max-width: 420px) {
  .irac-kpi-strip { grid-template-columns: 1fr; }
  .irac-btn { width: 100%; justify-content: center; }
  .irac-btn-row { flex-direction: column; }
  .irac-card-body { padding: 1rem .75rem; }
  .irac-tabs { gap: 0; }
  .irac-tab-btn { padding: .5rem .5rem; font-size: .73rem; }
  .irac-card-header { padding: .75rem 1rem; font-size: .9rem; }
  .irac-type-grid { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
  .irac-type-grid { grid-template-columns: 1fr 1fr; }
}