.ivstf-tool {
  --ivstf-tools-primary: var(--ivstf-primary, #dd0000);
  --ivstf-tools-text: var(--ivstf-text, #171717);
  --ivstf-tools-muted: var(--ivstf-muted, #666);
  --ivstf-tools-border: var(--ivstf-border, #dedede);
  --ivstf-tools-surface: var(--ivstf-surface, #f6f6f6);
  --ivstf-tools-interest: #9a6a21;
  color: var(--ivstf-tools-text);
  max-width: 820px;
  margin: 28px auto;
}
.ivstf-tool *, .ivstf-tool *::before, .ivstf-tool *::after { box-sizing: border-box; }
.ivstf-tool__title { margin: 0 0 10px; font-size: clamp(22px, 3vw, 30px); line-height: 1.2; }
.ivstf-tool .screen-reader-text {
  position: absolute !important;
  width: 1px !important;
  height: 1px !important;
  padding: 0 !important;
  margin: -1px !important;
  overflow: hidden !important;
  clip: rect(0,0,0,0) !important;
  white-space: nowrap !important;
  border: 0 !important;
}
.ivstf-tool__intro { margin: 0 0 18px; color: var(--ivstf-tools-muted); line-height: 1.6; }
.ivstf-form { display: grid; gap: 14px; }
.ivstf-form__row--two { display: grid; grid-template-columns: repeat(2, minmax(0,1fr)); gap: 14px; }
.ivstf-field { display: grid; gap: 6px; min-width: 0; margin: 0; }
.ivstf-field--wide { grid-column: 1 / -1; }
.ivstf-field label { font-size: 14px; font-weight: 700; }
.ivstf-field input,
.ivstf-field textarea,
.ivstf-field select,
.ivstf-newsletter input[type="text"],
.ivstf-newsletter input[type="email"] {
  width: 100%;
  min-width: 0;
  height: 46px;
  min-height: 46px;
  padding: 0 12px;
  border: 1px solid var(--ivstf-tools-border);
  border-radius: 0;
  background: #fff;
  color: var(--ivstf-tools-text);
  font: inherit;
}
.ivstf-field textarea { height: auto; min-height: 150px; padding: 10px 12px; resize: vertical; }
.ivstf-field input:focus,
.ivstf-field textarea:focus,
.ivstf-field select:focus,
.ivstf-newsletter input[type="text"]:focus,
.ivstf-newsletter input[type="email"]:focus {
  outline: 2px solid var(--ivstf-tools-primary);
  outline-offset: 1px;
  border-color: transparent;
}
.ivstf-button {
  min-height: 44px;
  width: fit-content;
  padding: 10px 18px;
  border: 1px solid var(--ivstf-tools-primary);
  border-radius: 0;
  background: var(--ivstf-tools-primary);
  color: #fff;
  font: inherit;
  font-weight: 800;
  cursor: pointer;
}
.ivstf-button:hover { filter: brightness(.92); }
.ivstf-button:focus-visible { outline: 2px solid var(--ivstf-tools-text); outline-offset: 3px; }

.ivstf-newsletter__line {
  display: grid;
  grid-template-columns: minmax(130px,.75fr) minmax(190px,1.25fr) auto;
  gap: 8px;
  align-items: stretch;
}
.ivstf-newsletter__line .ivstf-button { height: 100%; }
.ivstf-consent { display: flex; align-items: flex-start; gap: 8px; color: var(--ivstf-tools-muted); font-size: 12.5px; line-height: 1.45; }
.ivstf-consent input { flex: 0 0 auto; margin-top: 2px; }

.ivstf-notice { margin: 0 0 14px; padding: 10px 12px; border-left: 4px solid #777; background: var(--ivstf-tools-surface); }
.ivstf-notice--success { border-left-color: #2f7a43; }
.ivstf-notice--error { border-left-color: var(--ivstf-tools-primary); }
.ivstf-notice a { color: var(--ivstf-tools-primary); font-weight: 700; text-underline-offset: 2px; }
.ivstf-hp { position: absolute !important; left: -10000px !important; width: 1px !important; height: 1px !important; overflow: hidden !important; }

.ivstf-calculator {
  padding: clamp(18px, 3vw, 30px);
  border: 1px solid var(--ivstf-tools-border);
  background: var(--ivstf-tools-surface);
}
.ivstf-calculator__form { margin: 0; }
.ivstf-calculator__grid { display: grid; grid-template-columns: repeat(2, minmax(0,1fr)); gap: 14px; margin-bottom: 18px; }
.ivstf-duration-control { display: grid; grid-template-columns: minmax(0,1fr) auto; align-items: stretch; min-width: 0; height: 46px; }
.ivstf-duration-control input { height: 46px; min-height: 46px; margin: 0; border-right: 0; }
.ivstf-duration-control select { height: 46px; min-height: 46px; min-width: 108px; margin: 0; }
.ivstf-calculator__submit { min-width: 150px; }

.ivstf-calculator-modal {
  width: min(920px, calc(100vw - 32px));
  max-width: 920px;
  max-height: min(88vh, 900px);
  margin: auto;
  padding: 0;
  border: 0;
  border-radius: 0;
  background: transparent;
  color: var(--ivstf-tools-text);
  box-shadow: 0 24px 80px rgba(0,0,0,.25);
}
.ivstf-calculator-modal::backdrop { background: rgba(10,10,10,.62); }
.ivstf-calculator-modal[open] { opacity: 1; }
.ivstf-calculator-modal.is-fallback-open {
  position: fixed;
  z-index: 999999;
  inset: 50% auto auto 50%;
  transform: translate(-50%,-50%);
}
.ivstf-calculator-modal__panel {
  background: #fff;
  border-top: 4px solid var(--ivstf-tools-primary);
  opacity: 0;
  transform: translateY(18px) scale(.985);
  transition: opacity .4s ease, transform .5s cubic-bezier(.2,.7,.2,1);
}
.ivstf-calculator-modal.is-visible .ivstf-calculator-modal__panel { opacity: 1; transform: translateY(0) scale(1); }
.ivstf-calculator-modal.is-closing .ivstf-calculator-modal__panel { opacity: 0; transform: translateY(12px) scale(.99); }
.ivstf-calculator-modal__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  min-height: 72px;
  padding: 16px 20px 16px clamp(20px,4vw,32px);
  border-bottom: 1px solid var(--ivstf-tools-border);
}
.ivstf-calculator-modal__header h3 { margin: 0; font-size: clamp(21px,3vw,28px); line-height: 1.2; }
.ivstf-calculator-modal__close {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex: 0 0 auto;
  width: 44px;
  height: 44px;
  padding: 0;
  border: 1px solid var(--ivstf-tools-border);
  border-radius: 0;
  background: #fff;
  color: var(--ivstf-tools-text);
  font: 400 30px/1 Arial,sans-serif;
  cursor: pointer;
}
.ivstf-calculator-modal__close:hover { background: var(--ivstf-tools-surface); }
.ivstf-calculator-modal__close:focus-visible { outline: 2px solid var(--ivstf-tools-primary); outline-offset: 2px; }
.ivstf-calculator-modal__content { max-height: calc(88vh - 76px); overflow-y: auto; padding: clamp(20px,4vw,34px); }
.ivstf-calculator__summary { margin: 0 0 24px; color: #3d3d3d; font-size: clamp(16px,2vw,19px); line-height: 1.72; }
.ivstf-calculator__summary strong { color: var(--ivstf-tools-text); font-weight: 800; }
.ivstf-calculator__results {
  display: grid;
  grid-template-columns: repeat(3,minmax(0,1fr));
  gap: 1px;
  margin: 0 0 28px;
  border: 1px solid var(--ivstf-tools-border);
  background: var(--ivstf-tools-border);
}
.ivstf-calculator__results > div {
  display: grid;
  gap: 5px;
  min-width: 0;
  padding: 16px;
  background: #fff;
  opacity: 0;
  transform: translateY(8px);
  transition: opacity .44s ease, transform .54s ease;
}
.ivstf-calculator__results > div.is-visible { opacity: 1; transform: translateY(0); }
.ivstf-calculator__results span { color: var(--ivstf-tools-muted); font-size: 12.5px; }
.ivstf-calculator__results strong { overflow-wrap: anywhere; font-size: clamp(17px,2vw,23px); }
.ivstf-calculator__total strong { color: var(--ivstf-tools-primary); }
.ivstf-calculator-chart {
  margin-top: 2px;
  padding: 18px 16px 12px;
  border: 1px solid var(--ivstf-tools-border);
  background: #fff;
  opacity: 0;
  transform: translateY(10px);
  transition: opacity .52s ease, transform .64s ease;
}
.ivstf-calculator-chart.is-visible { opacity: 1; transform: translateY(0); }
.ivstf-calculator-chart__legend { display: flex; flex-wrap: wrap; gap: 10px 18px; margin: 0 0 12px; color: var(--ivstf-tools-muted); font-size: 12.5px; }
.ivstf-calculator-chart__legend span { display: inline-flex; align-items: center; gap: 7px; }
.ivstf-chart-dot { width: 10px; height: 10px; display: inline-block; }
.ivstf-chart-dot--total { background: var(--ivstf-tools-primary); }
.ivstf-chart-dot--invested { background: #3f4650; }
.ivstf-chart-dot--interest { background: var(--ivstf-tools-interest); }
.ivstf-calculator-chart canvas { display: block; width: 100%; max-width: 100%; }
.ivstf-calculator__note { margin: 14px 0 0; color: var(--ivstf-tools-muted); font-size: 12px; line-height: 1.55; }

@media (max-width: 700px) {
  .ivstf-newsletter__line { grid-template-columns: 1fr 1fr; }
  .ivstf-newsletter__line .ivstf-button { grid-column: 1 / -1; width: 100%; }
}

@media (max-width: 600px) {
  .ivstf-form__row--two,
  .ivstf-calculator__grid,
  .ivstf-calculator__results { grid-template-columns: 1fr; }
  .ivstf-field--wide { grid-column: auto; }
  .ivstf-newsletter__line { grid-template-columns: 1fr; }
  .ivstf-newsletter__line .ivstf-button { grid-column: auto; width: 100%; }
  .ivstf-calculator { padding: 16px; }
  .ivstf-duration-control select { min-width: 96px; }
  .ivstf-calculator__submit { width: 100%; }
  .ivstf-calculator-modal { width: calc(100vw - 16px); max-height: 94vh; }
  .ivstf-calculator-modal__header { min-height: 64px; padding: 10px 12px 10px 16px; }
  .ivstf-calculator-modal__content { max-height: calc(94vh - 68px); padding: 18px 14px 20px; }
  .ivstf-calculator__summary { font-size: 15.5px; }
  .ivstf-calculator-chart { padding: 14px 8px 8px; }
}

@media (prefers-reduced-motion: reduce) {
  .ivstf-tool *, .ivstf-tool *::before, .ivstf-tool *::after { scroll-behavior: auto !important; transition: none !important; animation: none !important; }
  .ivstf-calculator-modal__panel,
  .ivstf-calculator__results > div,
  .ivstf-calculator-chart { opacity: 1 !important; transform: none !important; }
}