@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800&display=swap');

.finance-calculator-wrap {
  --finance-calculator-teal: #0D9488;
  --finance-calculator-teal-light: #14B8A6;
  --finance-calculator-teal-dark: #0F766E;
  --finance-calculator-navy: #0F172A;
  --finance-calculator-navy-mid: #1E293B;
  --finance-calculator-white: #FFFFFF;
  --finance-calculator-gray: #F1F5F9;
  --finance-calculator-gray-mid: #E2E8F0;
  --finance-calculator-text: #0F172A;
  --finance-calculator-text-muted: #64748B;
  --finance-calculator-red: #DC2626;
  --finance-calculator-amber: #D97706;

  font-family: 'Inter', sans-serif;
  color: var(--finance-calculator-text);
  max-width: 1180px;
  margin: 0 auto;
  box-sizing: border-box;
}
.finance-calculator-wrap *, .finance-calculator-wrap *::before, .finance-calculator-wrap *::after {
  box-sizing: border-box;
}

/* ---------------- Header ---------------- */
.finance-calculator-header {
  background: linear-gradient(135deg, var(--finance-calculator-navy) 0%, var(--finance-calculator-navy-mid) 100%);
  color: #fff;
  padding: 40px;
  border-radius: 16px;
  text-align: center;
  margin-bottom: 24px;
}
.finance-calculator-header-icon { font-size: 40px; line-height: 1; margin-bottom: 8px; }
.finance-calculator-header h2 { margin: 0 0 8px; font-size: 28px; font-weight: 800; }
.finance-calculator-header p { margin: 0; font-size: 15px; color: #cbd5e1; max-width: 640px; margin-left: auto; margin-right: auto; }

/* ---------------- History ---------------- */
.finance-calculator-history-toggle-btn {
  display: block;
  width: 100%;
  padding: 14px;
  margin-bottom: 16px;
  background: var(--finance-calculator-white);
  border: 1px solid var(--finance-calculator-gray-mid);
  border-radius: 12px;
  color: var(--finance-calculator-teal-dark);
  font-family: inherit;
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  transition: background .15s ease;
}
.finance-calculator-history-toggle-btn:hover { background: var(--finance-calculator-gray); }

.finance-calculator-history-panel {
  background: var(--finance-calculator-gray);
  border-radius: 12px;
  padding: 20px;
  margin-bottom: 24px;
}
.finance-calculator-history-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 14px;
  flex-wrap: wrap;
}
.finance-calculator-history-title { margin: 0; font-weight: 700; font-size: 16px; }
.finance-calculator-history-head-actions { display: flex; gap: 8px; }
.finance-calculator-history-list {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 12px;
}
.finance-calculator-history-item {
  background: var(--finance-calculator-white);
  border-radius: 10px;
  padding: 14px;
  border: 1px solid var(--finance-calculator-gray-mid);
  min-width: 0;
}
.finance-calculator-history-item-top {
  display: flex;
  justify-content: space-between;
  font-size: 12px;
  color: var(--finance-calculator-text-muted);
  margin-bottom: 6px;
  gap: 8px;
}
.finance-calculator-history-item-type {
  background: var(--finance-calculator-teal);
  color: #fff;
  padding: 2px 8px;
  border-radius: 999px;
  font-weight: 600;
  font-size: 11px;
}
.finance-calculator-history-item-summary { font-size: 13px; color: var(--finance-calculator-text-muted); margin-bottom: 6px; word-break: break-word; }
.finance-calculator-history-item-result { font-size: 16px; font-weight: 700; color: var(--finance-calculator-teal-dark); }
.finance-calculator-history-empty { text-align: center; color: var(--finance-calculator-text-muted); font-size: 14px; margin: 8px 0 0; }

.finance-calculator-btn-ghost {
  background: transparent;
  border: 1px solid var(--finance-calculator-teal);
  color: var(--finance-calculator-teal-dark);
  padding: 8px 14px;
  border-radius: 8px;
  font-family: inherit;
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
}
.finance-calculator-btn-ghost:hover { background: rgba(13, 148, 136, .08); }
.finance-calculator-btn-ghost--small { padding: 6px 12px; font-size: 12px; }
.finance-calculator-btn-ghost--muted { border-color: var(--finance-calculator-gray-mid); color: var(--finance-calculator-text-muted); }

/* ---------------- Tabs ---------------- */
.finance-calculator-tab-row {
  display: flex;
  gap: 8px;
  background: var(--finance-calculator-gray);
  padding: 8px;
  border-radius: 12px;
  margin-bottom: 24px;
  flex-wrap: wrap;
}
.finance-calculator-tab-btn {
  flex: 1 1 80px;
  padding: 10px 12px;
  border: none;
  background: transparent;
  border-radius: 8px;
  font-family: inherit;
  font-size: 14px;
  font-weight: 600;
  color: var(--finance-calculator-text-muted);
  cursor: pointer;
  transition: background .15s ease, color .15s ease;
}
.finance-calculator-tab-btn:hover { background: rgba(15, 23, 42, .06); }
.finance-calculator-tab-btn--active {
  background: var(--finance-calculator-teal);
  color: #fff;
}
.finance-calculator-tab-btn--active:hover { background: var(--finance-calculator-teal); }

/* ---------------- Main grid ---------------- */
.finance-calculator-main-grid {
  display: grid;
  grid-template-columns: 380px 1fr;
  gap: 24px;
  align-items: start;
}
@media (max-width: 900px) {
  .finance-calculator-main-grid { grid-template-columns: 1fr; }
}

.finance-calculator-inputs-panel, .finance-calculator-results-panel {
  background: var(--finance-calculator-white);
  border: 1px solid var(--finance-calculator-gray-mid);
  border-radius: 16px;
  padding: 24px;
  min-width: 0;
}
.finance-calculator-hint { font-size: 13px; color: var(--finance-calculator-text-muted); margin: 0 0 16px; }

/* Field / field-row rules (anti-bug rule (a): bare .field must NOT stretch-grow in a column-flex parent) */
.finance-calculator-field-group { margin-bottom: 14px; }
.finance-calculator-field {
  flex: 0 1 auto;
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.finance-calculator-field-row {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-bottom: 14px;
}
.finance-calculator-field-row > .finance-calculator-field {
  flex: 1 1 180px;
  min-width: 0;
}

.finance-calculator-field label {
  font-size: 13px;
  font-weight: 600;
  color: var(--finance-calculator-text);
}
.finance-calculator-input, .finance-calculator-select {
  width: 100%;
  min-width: 0;
  padding: 10px 12px;
  border: 1px solid var(--finance-calculator-gray-mid);
  border-radius: 8px;
  font-family: inherit;
  font-size: 15px;
  color: var(--finance-calculator-text);
  background: var(--finance-calculator-white);
}
.finance-calculator-input:focus, .finance-calculator-select:focus {
  outline: none;
  border-color: var(--finance-calculator-teal);
  box-shadow: 0 0 0 3px rgba(13, 148, 136, .12);
}

.finance-calculator-solved-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  padding: 12px;
  border: 1.5px dashed var(--finance-calculator-teal);
  border-radius: 8px;
  color: var(--finance-calculator-teal-dark);
  font-size: 13px;
  font-weight: 600;
  background: rgba(13, 148, 136, .06);
  box-sizing: border-box;
}

.finance-calculator-toggle-row { display: flex; gap: 16px; flex-wrap: wrap; align-items: center; min-height: 40px; }
.finance-calculator-radio-label { font-size: 13px; display: flex; align-items: center; gap: 6px; color: var(--finance-calculator-text); cursor: pointer; }

.finance-calculator-settings-toggle {
  background: none;
  border: none;
  color: var(--finance-calculator-teal-dark);
  font-family: inherit;
  font-size: 13px;
  font-weight: 700;
  cursor: pointer;
  padding: 6px 0;
  margin-bottom: 6px;
}
.finance-calculator-settings-panel {
  background: var(--finance-calculator-gray);
  border-radius: 10px;
  padding: 16px;
  margin-bottom: 16px;
}

.finance-calculator-btn-row { display: flex; gap: 10px; margin-top: 8px; }
.finance-calculator-calc-btn {
  flex: 1 1 auto;
  padding: 13px;
  background: var(--finance-calculator-teal);
  color: #fff;
  border: none;
  border-radius: 10px;
  font-family: inherit;
  font-size: 15px;
  font-weight: 700;
  cursor: pointer;
  transition: background .15s ease;
}
.finance-calculator-calc-btn:hover { background: var(--finance-calculator-teal-dark); }
.finance-calculator-clear-btn {
  flex: 0 0 auto;
  padding: 13px 18px;
  background: var(--finance-calculator-gray);
  color: var(--finance-calculator-text-muted);
  border: 1px solid var(--finance-calculator-gray-mid);
  border-radius: 10px;
  font-family: inherit;
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
}
.finance-calculator-clear-btn:hover { background: var(--finance-calculator-gray-mid); }

.finance-calculator-error {
  margin-top: 12px;
  padding: 12px;
  background: rgba(220, 38, 38, .08);
  border: 1px solid rgba(220, 38, 38, .3);
  border-radius: 8px;
  color: var(--finance-calculator-red);
  font-size: 13px;
  font-weight: 600;
}

/* ---------------- Results ---------------- */
.finance-calculator-hero-card {
  background: linear-gradient(135deg, var(--finance-calculator-navy) 0%, var(--finance-calculator-navy-mid) 100%);
  border-radius: 14px;
  padding: 28px;
  text-align: center;
  color: #fff;
  margin-bottom: 20px;
}
.finance-calculator-hero-label { font-size: 13px; color: #94a3b8; font-weight: 600; margin-bottom: 8px; text-transform: uppercase; letter-spacing: .04em; }
.finance-calculator-hero-amount { font-size: 38px; font-weight: 800; line-height: 1.2; }
.finance-calculator-hero-amount--positive { color: var(--finance-calculator-teal-light); }
.finance-calculator-hero-amount--negative { color: #f87171; }
.finance-calculator-hero-sub { font-size: 13px; color: #cbd5e1; margin-top: 8px; }

.finance-calculator-stats-grid {
  display: grid;
  gap: 12px;
  margin-bottom: 20px;
}
.finance-calculator-stats-grid--2 { grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); }
@media (max-width: 480px) {
  .finance-calculator-stats-grid--2 { grid-template-columns: minmax(0, 1fr); }
}
.finance-calculator-stat-card {
  background: var(--finance-calculator-gray);
  border-radius: 10px;
  padding: 16px;
  min-width: 0;
}
.finance-calculator-stat-label { font-size: 12px; color: var(--finance-calculator-text-muted); font-weight: 600; margin-bottom: 6px; }
.finance-calculator-stat-val { font-size: 20px; font-weight: 700; }
.finance-calculator-stat-val--positive { color: var(--finance-calculator-teal-dark); }
.finance-calculator-stat-val--negative { color: var(--finance-calculator-red); }

.finance-calculator-chart-card, .finance-calculator-table-card {
  background: var(--finance-calculator-gray);
  border-radius: 12px;
  padding: 18px;
  margin-bottom: 20px;
  min-width: 0;
}
.finance-calculator-chart-title { font-size: 14px; font-weight: 700; margin-bottom: 12px; }
.finance-calculator-chart-note, .finance-calculator-table-note { font-size: 12px; color: var(--finance-calculator-text-muted); margin: 8px 0 0; }

.finance-calculator-chart-wrap { width: 100%; overflow-x: auto; position: relative; }
.finance-calculator-chart-svg { width: 100%; height: auto; display: block; }
.finance-calculator-chart-hit { cursor: crosshair; }

.finance-calculator-chart-tooltip {
  position: absolute;
  z-index: 5;
  pointer-events: none;
  background: var(--finance-calculator-navy);
  color: var(--finance-calculator-white);
  border-radius: 10px;
  padding: 10px 12px;
  font-size: 12px;
  line-height: 1.6;
  box-shadow: 0 8px 20px rgba(15, 23, 42, 0.25);
  white-space: nowrap;
  min-width: 160px;
}
.finance-calculator-chart-tooltip-title { font-weight: 800; font-size: 12px; margin-bottom: 4px; color: var(--finance-calculator-teal-light); }
.finance-calculator-chart-tooltip-row { display: flex; align-items: center; gap: 6px; }
.finance-calculator-chart-tooltip-swatch { width: 8px; height: 8px; border-radius: 2px; display: inline-block; flex: 0 0 auto; }
.finance-calculator-chart-legend {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 12px;
  font-size: 12px;
}
.finance-calculator-chart-legend-item { display: flex; align-items: center; gap: 6px; color: var(--finance-calculator-text-muted); }
.finance-calculator-chart-legend-swatch { width: 12px; height: 12px; border-radius: 3px; display: inline-block; flex: 0 0 auto; }

.finance-calculator-table-wrap { width: 100%; overflow-x: auto; max-height: 420px; overflow-y: auto; border-radius: 8px; }
.finance-calculator-table { width: 100%; border-collapse: collapse; font-size: 13px; min-width: 480px; }
.finance-calculator-table thead th {
  position: sticky;
  top: 0;
  background: var(--finance-calculator-navy);
  color: #fff;
  padding: 10px 12px;
  text-align: left;
  font-weight: 600;
  z-index: 1;
}
.finance-calculator-table tbody td { padding: 8px 12px; border-bottom: 1px solid var(--finance-calculator-gray-mid); background: var(--finance-calculator-white); }
.finance-calculator-table tbody tr:nth-child(even) td { background: #f8fafc; }

.finance-calculator-export-row { display: flex; gap: 10px; flex-wrap: wrap; margin-bottom: 16px; }
.finance-calculator-export-btn {
  flex: 1 1 auto;
  padding: 11px;
  background: var(--finance-calculator-white);
  border: 1px solid var(--finance-calculator-gray-mid);
  border-radius: 8px;
  font-family: inherit;
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  color: var(--finance-calculator-text);
}
.finance-calculator-export-btn:hover { background: var(--finance-calculator-gray); }

.finance-calculator-disclaimer { font-size: 12px; color: var(--finance-calculator-text-muted); margin: 0; line-height: 1.5; }

/* ---------------- Off-screen export card (PNG render target) ---------------- */
.finance-calculator-export-card {
  width: 720px;
  background: #fff;
  font-family: 'Inter', sans-serif;
  padding: 32px;
  box-sizing: border-box;
}
.finance-calculator-export-card * { box-sizing: border-box; }
.finance-calculator-export-card-header {
  background: linear-gradient(135deg, #0F172A 0%, #1E293B 100%);
  color: #fff;
  padding: 24px;
  border-radius: 12px;
  text-align: center;
  margin-bottom: 20px;
}
.finance-calculator-export-card-header h3 { margin: 0 0 4px; font-size: 20px; }
.finance-calculator-export-card-header p { margin: 0; font-size: 12px; color: #cbd5e1; }
.finance-calculator-export-card-hero { text-align: center; margin-bottom: 20px; }
.finance-calculator-export-card-hero .finance-calculator-export-card-label { font-size: 12px; color: #64748b; font-weight: 600; text-transform: uppercase; margin-bottom: 6px; }
.finance-calculator-export-card-hero .finance-calculator-export-card-value { font-size: 30px; font-weight: 800; color: #0d9488; }
.finance-calculator-export-card-table { width: 100%; border-collapse: collapse; font-size: 12px; margin-bottom: 16px; }
.finance-calculator-export-card-table th { background: #0F172A; color: #fff; padding: 8px 10px; text-align: left; }
.finance-calculator-export-card-table td { padding: 7px 10px; border-bottom: 1px solid #e2e8f0; }
.finance-calculator-export-card-footer { font-size: 11px; color: #64748b; margin-top: 8px; }