/* family-letter.css — interactive layer for the bilingual Family Letters
   (math/family/unit-N/index.html). Progressive enhancement: every control is
   added by family-letter.js and degrades to plain, printable content when JS
   is off. Content stays untouched; this only adds controls + view state. */

/* ---- Language focus toggle ------------------------------------------------ */
.fl-langbar {
  display: flex;
  gap: 6px;
  align-items: center;
  flex-wrap: wrap;
  margin: 4px 0 14px;
  padding: 6px;
  background: #eef3f6;
  border: 1px solid var(--line, #e2e7ec);
  border-radius: 12px;
}
.fl-langbar .fl-lang-label {
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: #5e6e7e;
  margin: 0 6px 0 4px;
}
.fl-seg {
  background: #fff;
  color: #0f2b3c;
  border: 1px solid var(--line, #e2e7ec);
  border-radius: 999px;
  padding: 8px 16px;
  font-weight: 700;
  font-size: 14px;
  font-family: inherit;
  cursor: pointer;
  min-height: 40px;
}
.fl-seg[aria-pressed="true"] {
  background: #0f2b3c;
  color: #fff;
  border-color: #0f2b3c;
}
.fl-seg:focus-visible {
  outline: 3px solid #1a6fb5;
  outline-offset: 2px;
}

/* View state: hide the language that isn't selected. */
.cols[data-lang-view="en"] .lang-es,
.cols[data-lang-view="es"] .lang-en {
  display: none;
}

/* ---- Per-column read-aloud button ---------------------------------------- */
.fl-col-tools {
  display: flex;
  justify-content: flex-end;
  margin: -4px 0 2px;
}
.fl-speak {
  background: #fff;
  color: #1a6fb5;
  border: 1px solid #b9d3e8;
  border-radius: 999px;
  padding: 6px 12px;
  font-weight: 700;
  font-size: 13px;
  font-family: inherit;
  cursor: pointer;
  min-height: 36px;
}
.fl-speak[aria-pressed="true"] {
  background: #1a6fb5;
  color: #fff;
  border-color: #1a6fb5;
}
.fl-speak:focus-visible {
  outline: 3px solid #1a6fb5;
  outline-offset: 2px;
}

/* ---- Interactive "Try it together" --------------------------------------- */
.fl-reveal {
  background: #0f2b3c;
  color: #fff;
  border: none;
  border-radius: 8px;
  padding: 8px 16px;
  font-weight: 700;
  font-size: 14px;
  font-family: inherit;
  cursor: pointer;
  margin-top: 8px;
  min-height: 40px;
}
.fl-reveal:focus-visible {
  outline: 3px solid #d4952a;
  outline-offset: 2px;
}
.fl-answer[hidden] {
  display: none;
}
.fl-answer {
  display: block;
  margin-top: 8px;
  font-weight: 700;
  color: #0f2b3c;
}

/* ---- "We practiced together" completion check ---------------------------- */
.fl-done {
  display: flex;
  align-items: center;
  gap: 12px;
  margin: 20px 0 4px;
  padding: 14px 18px;
  background: #eef7ef;
  border: 1px solid #c7e3cc;
  border-radius: 14px;
  font-size: 15px;
  font-weight: 600;
  color: #1f5130;
  cursor: pointer;
}
.fl-done input {
  width: 24px;
  height: 24px;
  accent-color: #2f8f4e;
  cursor: pointer;
  flex: none;
}
.fl-done.is-done {
  background: #dff2e2;
  border-color: #9fd3a9;
}
.fl-done .fl-done-cheer {
  margin-left: auto;
  font-size: 20px;
  opacity: 0;
  transition: opacity 0.2s ease;
}
.fl-done.is-done .fl-done-cheer {
  opacity: 1;
}

/* ---- Larger, parent-friendly typography ---------------------------------
   Higher specificity than the page's inline .lang rules so this wins. */
.cols .lang h2 {
  font-size: 25px;
  line-height: 1.25;
}
.cols .lang h3 {
  font-size: 19px;
  line-height: 1.3;
}
.cols .lang p {
  font-size: 17px;
  line-height: 1.6;
}
.cols .lang ul {
  padding-left: 22px;
}
.cols .lang li {
  font-size: 17px;
  line-height: 1.55;
  margin: 8px 0;
}
.cols .lang .flag {
  font-size: 13px;
}
.cols .lang table.voc {
  font-size: 17px;
}
.cols .lang table.voc td {
  padding: 10px 12px;
}
.cols .lang .tryit {
  font-size: 17px;
  line-height: 1.55;
}

/* ---- Tap-a-word glossary term -------------------------------------------- */
.fl-term {
  background: none;
  border: none;
  font: inherit;
  color: #1a6fb5;
  cursor: pointer;
  padding: 2px 2px;
  text-align: left;
  text-decoration: underline;
  text-decoration-style: dotted;
  text-underline-offset: 3px;
}
table.voc td:first-child .fl-term {
  font-weight: 700;
}
.fl-term:hover {
  text-decoration-style: solid;
}
.fl-term:focus-visible {
  outline: 3px solid #1a6fb5;
  outline-offset: 2px;
  border-radius: 4px;
}
.fl-term-i {
  font-size: 0.8em;
  margin-left: 3px;
  color: #1a6fb5;
  vertical-align: 1px;
}

/* ---- Glossary pop-up modal ----------------------------------------------- */
.fl-modal[hidden] {
  display: none;
}
.fl-modal {
  position: fixed;
  inset: 0;
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 16px;
}
.fl-modal-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(15, 43, 60, 0.55);
}
.fl-modal-card {
  position: relative;
  background: #fff;
  border-radius: 18px;
  padding: 22px 24px 24px;
  max-width: 420px;
  width: 100%;
  box-shadow: 0 18px 50px rgba(15, 43, 60, 0.35);
  text-align: center;
  max-height: 90vh;
  overflow-y: auto;
}
.fl-modal-x {
  position: absolute;
  top: 10px;
  right: 10px;
  width: 40px;
  height: 40px;
  border: none;
  border-radius: 999px;
  background: #eef3f6;
  color: #0f2b3c;
  font-size: 18px;
  font-weight: 700;
  cursor: pointer;
}
.fl-modal-x:focus-visible {
  outline: 3px solid #1a6fb5;
  outline-offset: 2px;
}
.fl-modal-img {
  width: 140px;
  height: 140px;
  object-fit: contain;
  margin: 6px auto 10px;
  display: block;
}
.fl-modal-term {
  margin: 0 0 12px;
  font-size: 22px;
  color: #0f2b3c;
}
.fl-modal-def {
  font-size: 16px;
  line-height: 1.5;
  color: #24333f;
  text-align: left;
  margin: 10px 0;
}
.fl-modal-flag {
  margin-right: 4px;
}
.fl-modal-say {
  background: #fff;
  color: #1a6fb5;
  border: 1px solid #b9d3e8;
  border-radius: 999px;
  width: 34px;
  height: 34px;
  cursor: pointer;
  vertical-align: middle;
}
.fl-modal-say:focus-visible {
  outline: 3px solid #1a6fb5;
  outline-offset: 2px;
}

/* ---- Print: always show both languages and all answers ------------------- */
@media print {
  .fl-langbar,
  .fl-col-tools,
  .fl-reveal,
  .fl-done,
  .fl-modal,
  .fl-term-i {
    display: none !important;
  }
  .fl-term {
    color: inherit;
    text-decoration: none;
  }
  .cols[data-lang-view] .lang-en,
  .cols[data-lang-view] .lang-es {
    display: block !important;
  }
  .fl-answer[hidden] {
    display: block !important;
  }
}