/* ========== SUPERSCRIPT WRAPPER ========== */
sup.amsfp-footnote {
  font-size: 0.75em;
  vertical-align: super;
  line-height: 0;
  position: relative;
  top: 2px;
  left: -5px;
}

/* ========== TRIGGER BUTTON ========== */
sup.amsfp-footnote > .amsfp-fn-btn {
  appearance: none;
  -webkit-appearance: none;
  border: none;
  background: transparent;
  box-shadow: none;
  display: inline;
  line-height: 1;
  margin: 0;
  padding: 0 0.15em;
  font: inherit;
  text-decoration: none;
  cursor: pointer;
  color: var(--main-blue, currentColor);
}
sup.amsfp-footnote > .amsfp-fn-btn:hover,
sup.amsfp-footnote > .amsfp-fn-btn:focus,
sup.amsfp-footnote > .amsfp-fn-btn[aria-expanded="true"] {
  color: var(--dark-red, var(--main-blue, currentColor));
  background: transparent;
  box-shadow: none;
  border-color: transparent;
  outline: none;
}
sup.amsfp-footnote > .amsfp-fn-btn:focus {
  color: var(--main-blue);
}
.amsfp-fn-btn:focus-visible {
  outline: 2px solid #0a66ff;
  outline-offset: 2px;
}

/* ========== NOTE NUMBER INSIDE POPOVER ========== */
.amsfp-fn-note-number {
  font-size: 0.75em;
  vertical-align: super;
  line-height: 0;
  font-weight: 600;
}

/* ========== POPOVER SHELL ========== */
.amsfp-popover {
  position: fixed;
  top: var(--fp-top, 0px);
  left: var(--fp-left, 0px);
  max-width: min(28rem, 90vw);
  background: #ffffff;
  color: #111111;
  border: 1px solid #e5e5e5;
  border-radius: 12px;
  box-shadow: 0 10px 30px rgba(0,0,0,0.12), 0 2px 8px rgba(0,0,0,0.08);
  font-size: 1.4rem;
  line-height: 1.5;
  opacity: 0;
  transition: opacity 150ms ease;
  visibility: hidden;
  pointer-events: none;
  overflow: hidden;
}
.amsfp-popover.is-open {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
}

/* ========== POPOVER HEADER ========== */
.amsfp-popover__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  padding: 10px 12px 10px 16px;
}
.amsfp-popover__title {
  font-size: 95%;
  font-weight: 700;
  line-height: 1;
}
.amsfp-popover__close {
  appearance: none;
  -webkit-appearance: none;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  padding: 0;
  border: none;
  border-radius: 8px;
  background: #c0392b;
  color: #ffffff;
  font-size: 16px;
  line-height: 1;
  cursor: pointer;
  flex-shrink: 0;
  transition: background 120ms ease;
}
.amsfp-popover__close:hover {
  background: #a93226;
}
.amsfp-popover__close:focus-visible {
  outline: 2px solid #0a66ff;
  outline-offset: 2px;
}

/* ========== POPOVER DIVIDER ========== */
.amsfp-popover__divider {
  margin: 0;
  border: none;
  border-top: 1px solid #e8e8e8;
}

/* ========== POPOVER CONTENT ========== */
.amsfp-popover__content {
  padding: 12px 16px 14px;
}

/* ========== ARROW ========== */
.amsfp-popover__arrow {
  position: absolute;
  width: 0;
  height: 0;
  overflow: visible;
}
.amsfp-popover__arrow::before,
.amsfp-popover__arrow::after {
  content: "";
  position: absolute;
  width: 0;
  height: 0;
  border-style: solid;
  transform: none;
  box-shadow: none;
  background: transparent;
}

/* Arrow points UP (popover is below anchor) */
.amsfp-popover[data-place="bottom"] .amsfp-popover__arrow { top: -6px; bottom: auto; }
.amsfp-popover[data-place="bottom"] .amsfp-popover__arrow::before { border-width: 0 6px 6px 6px; border-color: transparent transparent #e5e5e5 transparent; top: 0; left: 0; }
.amsfp-popover[data-place="bottom"] .amsfp-popover__arrow::after  { border-width: 0 5px 5px 5px; border-color: transparent transparent #ffffff transparent; top: 1px; left: 0; }

/* Arrow points DOWN (popover is above anchor) */
.amsfp-popover[data-place="top"] .amsfp-popover__arrow { bottom: -6px; top: auto; }
.amsfp-popover[data-place="top"] .amsfp-popover__arrow::before { border-width: 6px 6px 0 6px; border-color: #e5e5e5 transparent transparent transparent; top: -5px; left: 0; }
.amsfp-popover[data-place="top"] .amsfp-popover__arrow::after  { border-width: 5px 5px 0 5px; border-color: #ffffff transparent transparent transparent; top: -6px; left: 0; }

/* Left variant */
.amsfp-popover[data-place="left"] .amsfp-popover__arrow { right: -6px; left: auto; }
.amsfp-popover[data-place="left"] .amsfp-popover__arrow::before { border-width: 6px 0 6px 6px; border-color: transparent transparent transparent #e5e5e5; top: 0; left: 0; }
.amsfp-popover[data-place="left"] .amsfp-popover__arrow::after  { border-width: 5px 0 5px 5px; border-color: transparent transparent transparent #ffffff; top: 1px; left: 0; }

/* Right variant */
.amsfp-popover[data-place="right"] .amsfp-popover__arrow { left: -6px; right: auto; }
.amsfp-popover[data-place="right"] .amsfp-popover__arrow::before { border-width: 6px 6px 6px 0; border-color: transparent #e5e5e5 transparent transparent; top: 0; left: 0; }
.amsfp-popover[data-place="right"] .amsfp-popover__arrow::after  { border-width: 5px 5px 5px 0; border-color: transparent #ffffff transparent transparent; top: 1px; left: 0; }

/* ========== ENDNOTES LIST ========== */
.amsfp-footnote-list {
  margin-top: 2rem;
  border-top: 1px solid rgba(0,0,0,0.08);
  padding-top: 1rem;
}
.amsfp-footnote-list__heading {
  font-size: 1.125rem;
  margin: 0 0 0.5rem 0;
}
.amsfp-footnote-list__items {
  margin: 0;
  padding-left: 1.25rem;
}