.calculator-page { padding: 28px 20px 56px; }

.calculator-h1 {
  font-family: var(--font-serif); font-weight: 700; font-size: 30px; line-height: 1.2; margin: 0 0 8px;
}
.calculator-intro { color: var(--muted); font-size: 14px; line-height: 1.6; max-width: 640px; margin: 0 0 22px; }

/* Mode tabs */
.calculator-tabs { display: flex; gap: 8px; overflow-x: auto; margin-bottom: 24px; padding-bottom: 2px; }
.calculator-tab {
  flex-shrink: 0; white-space: nowrap; padding: 10px 16px; border-radius: 12px;
  font-size: 14px; font-weight: 600; text-decoration: none;
  background: var(--bg-tint); color: var(--muted); border: 1px solid var(--border);
}
.calculator-tab.is-active { background: var(--accent); color: #fff; border-color: var(--accent); }
.calculator-tab:hover:not(.is-active) { border-color: var(--border-strong); }

/* Grid + cards */
.calculator-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; align-items: start; margin-bottom: 24px; }
@media (max-width: 860px) { .calculator-grid { grid-template-columns: 1fr; } }

.calculator-card {
  background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius-lg);
  box-shadow: 0 1px 3px rgba(22,163,74,.08); padding: 20px;
}
.calculator-card-heading { font-family: var(--font-serif); font-size: 17px; font-weight: 600; margin: 0 0 16px; }
.calculator-card-heading-lg { font-family: var(--font-serif); font-size: 20px; font-weight: 600; margin: 0 0 10px; }

/* Currency / language row */
.calc-topbar { display: flex; gap: 10px; margin-bottom: 18px; flex-wrap: wrap; }
.calc-topbar-field { flex: 1; min-width: 140px; }
.calc-topbar label { display: block; font-size: 11px; font-weight: 600; color: var(--muted); text-transform: uppercase; margin-bottom: 4px; }
.calc-topbar select {
  width: 100%; background: var(--bg-tint); color: var(--ink); font-weight: 600;
  border: 1px solid var(--border-strong); border-radius: 10px; padding: 9px 10px; font-size: 14px;
}
.calc-auto-note { font-size: 11px; color: var(--muted); margin-top: 4px; }
.i18n-banner {
  background: var(--bg-tint); border: 1px solid var(--border); border-radius: 8px;
  padding: 8px 12px; margin-bottom: 14px; font-size: 12px;
}

/* Input fields */
.calc-field { margin-bottom: 16px; }
.calc-field label { display: flex; justify-content: space-between; font-size: 13px; font-weight: 600; margin-bottom: 6px; }
.calc-field label .calc-field-value { color: var(--accent-dark); font-weight: 700; }
.calc-field input[type="range"] { width: 100%; accent-color: var(--accent); }
.calc-field input[type="number"] {
  width: 100%; padding: 9px 10px; border: 1px solid var(--border); border-radius: 10px; font-size: 14px;
}
.calc-toggle-row { display: flex; align-items: center; justify-content: space-between; padding: 10px 0; border-top: 1px solid var(--border); }
.calc-toggle-row:first-of-type { border-top: none; margin-top: 4px; }
.calc-toggle-row span { font-size: 13px; font-weight: 600; }
.calc-toggle { position: relative; width: 40px; height: 22px; border-radius: 999px; background: var(--border); border: none; cursor: pointer; flex-shrink: 0; }
.calc-toggle.is-on { background: var(--accent); }
.calc-toggle::after {
  content: ''; position: absolute; top: 2px; left: 2px; width: 18px; height: 18px; border-radius: 50%;
  background: #fff; transition: transform .15s ease;
}
.calc-toggle.is-on::after { transform: translateX(18px); }

/* Results */
.calc-stats { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin-bottom: 20px; }
@media (max-width: 420px) { .calc-stats { grid-template-columns: 1fr; } }
.calc-stat { background: var(--bg-tint); border: 1px solid var(--border); border-radius: var(--radius-md); padding: 14px; }
.calc-stat-label { font-size: 11px; text-transform: uppercase; color: var(--muted); font-weight: 700; letter-spacing: .02em; }
.calc-stat-value { font-family: var(--font-serif); font-size: 22px; font-weight: 700; margin-top: 4px; }
.calc-stat.is-accent { background: var(--bg-tint-strong); border-color: var(--border-strong); }
.calc-stat.is-accent .calc-stat-value { color: var(--accent-dark); }

.calc-chart-wrap { margin: 20px 0; }
.calc-chart-title { font-size: 12px; text-transform: uppercase; letter-spacing: .03em; color: var(--muted); font-weight: 700; margin-bottom: 8px; }
.calc-chart-wrap svg { width: 100%; height: auto; display: block; }

.calc-note { font-size: 11px; color: var(--muted); line-height: 1.6; margin-top: 12px; }

.calc-year-table { margin-top: 16px; border-top: 1px solid var(--border); padding-top: 12px; }
.calc-year-table-toggle { cursor: pointer; font-size: 13px; font-weight: 700; color: var(--ink); list-style: none; }
.calc-year-table-toggle::-webkit-details-marker { display: none; }
.calc-year-table-toggle::before { content: '+'; display: inline-block; width: 16px; color: var(--accent); font-weight: 700; }
.calc-year-table[open] .calc-year-table-toggle::before { content: '\2212'; }
.calc-table-wrap { overflow-x: auto; margin: 10px 0; max-height: 320px; overflow-y: auto; border: 1px solid var(--border); border-radius: 10px; }
.calc-table { width: 100%; border-collapse: collapse; font-size: 13px; }
.calc-table th, .calc-table td { padding: 8px 12px; text-align: right; white-space: nowrap; }
.calc-table th:first-child, .calc-table td:first-child { text-align: left; }
.calc-table thead th { background: var(--bg-tint); position: sticky; top: 0; font-weight: 700; border-bottom: 1px solid var(--border); }
.calc-table tbody tr:nth-child(even) { background: var(--bg-tint); }
.calc-csv-btn {
  font-size: 12px; font-weight: 600; padding: 7px 12px; border-radius: 8px;
  border: 1px solid var(--border-strong); background: var(--bg-card); color: var(--accent-dark); cursor: pointer;
}
.calc-csv-btn:hover { background: var(--bg-tint); }

.calc-error { background: #FEF2F2; border: 1px solid #FCA5A5; color: #991B1B; border-radius: 10px; padding: 12px 14px; font-size: 13px; margin-bottom: 16px; }

/* How it works */
.calculator-howitworks { margin-bottom: 20px; }
.calculator-howitworks-intro { color: var(--muted); font-size: 14px; max-width: 640px; margin: 0 0 18px; }
.calculator-steps { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
@media (max-width: 640px) { .calculator-steps { grid-template-columns: 1fr; } }
.calculator-step { display: flex; gap: 12px; }
.calculator-step-num {
  width: 28px; height: 28px; border-radius: 50%; background: var(--accent); color: #fff;
  font-size: 12px; font-weight: 700; display: flex; align-items: center; justify-content: center; flex-shrink: 0;
}
.calculator-step-title { font-size: 14px; font-weight: 700; margin-bottom: 2px; }
.calculator-step p { font-size: 13px; color: var(--muted); margin: 0; line-height: 1.5; }

/* FAQ */
.calculator-faq { margin-bottom: 8px; }
.faq-item { border-bottom: 1px solid var(--border); padding: 12px 0; }
.faq-item:last-child { border-bottom: none; }
.faq-question { cursor: pointer; font-size: 14px; font-weight: 600; list-style: none; }
.faq-question::-webkit-details-marker { display: none; }
.faq-question::before { content: '+'; display: inline-block; width: 16px; color: var(--accent); font-weight: 700; }
details[open] .faq-question::before { content: '−'; }
.faq-answer { font-size: 14px; color: var(--muted); line-height: 1.6; margin: 8px 0 0 16px; }

/* Byline */
.calculator-byline { font-size: 12px; color: var(--muted); margin: -10px 0 20px; }
.calculator-byline a { color: var(--accent-dark); font-weight: 600; }

/* Reserve space for the JS-rendered panels so the page doesn't jump when
   they fill in (layout shift). Values are approximate heights per mode. */
#calc-topbar { min-height: 64px; }
#calc-inputs { min-height: 300px; }
#calc-results { min-height: 460px; }
[data-mode="goal"] #calc-inputs { min-height: 260px; }
[data-mode="goal"] #calc-results { min-height: 440px; }
[data-mode="delay"] #calc-inputs { min-height: 240px; }
[data-mode="delay"] #calc-results { min-height: 300px; }