/* Estilos isolados: nenhum seletor altera o tema fora de .ff-activities. */
.ff-activities {
    --ff-ink: #16324b;
    --ff-muted: #455d6f;
    --ff-orange: #bc430b;
    --ff-orange-dark: #81310c;
    --ff-teal: #14655e;
    --ff-teal-dark: #0b403c;
    --ff-sky: #eaf3fd;
    --ff-cream: #fff8ec;
    --ff-line: #a0b0b8;
    --ff-focus: #0b4fab;
    color: var(--ff-ink);
    background: #fff;
    font: 400 1rem/1.55 ui-rounded, "Trebuchet MS", system-ui, sans-serif;
    border: 2px solid #e5d6be;
    border-radius: 24px;
    box-shadow: 0 8px 0 #f1e8d8;
    padding: clamp(12px, 3vw, 28px);
    margin: 24px auto 32px;
    max-width: 940px;
    min-width: 0;
    text-align: left;
    isolation: isolate;
    overflow-wrap: anywhere;
}
.ff-activities *, .ff-activities *::before, .ff-activities *::after { box-sizing: border-box; }
.ff-activities [hidden] { display: none !important; }
.ff-activities :is(h2, h3, p, ul) { color: inherit; font-family: inherit; letter-spacing: normal; text-transform: none; }
.ff-activities p { margin: 0 0 12px; }
.ff-activities .ff-header { display: flex; align-items: center; justify-content: space-between; gap: 14px; flex-wrap: wrap; margin-bottom: 24px; }
.ff-activities .ff-brand { display: flex; align-items: center; gap: 10px; font-size: 14px; font-weight: 900; line-height: 1.2; letter-spacing: .055em; }
.ff-activities .ff-brand-mark { display: inline-grid; place-items: center; font-size: 30px; background: #ffd166; color: var(--ff-ink); width: 46px; height: 46px; border: 2px solid var(--ff-ink); border-radius: 15px; box-shadow: 0 3px 0 var(--ff-ink); flex: 0 0 auto; }
.ff-activities .ff-brand-sub { display: block; margin-top: 5px; color: var(--ff-teal); font-size: 10px; letter-spacing: .08em; }
.ff-activities .ff-pill { display: inline-block; color: var(--ff-teal-dark); background: #e4f3ec; border-radius: 99px; padding: 6px 12px; font-size: 13px; font-weight: 700; }
.ff-activities .ff-title { font-size: clamp(25px, 4vw, 36px); line-height: 1.16; font-weight: 900; margin: 0 0 10px; color: var(--ff-ink); }
.ff-activities .ff-intro { color: var(--ff-muted); font-size: 17px; margin-bottom: 22px; }
.ff-activities .ff-playarea { min-height: 455px; }
.ff-activities.ff-wordsearch .ff-playarea { min-height: 565px; }
.ff-activities .ff-loading { padding: 24px 16px; background: var(--ff-cream); border-radius: 14px; }
.ff-activities .ff-toolbar { display: flex; align-items: end; justify-content: space-between; gap: 14px; flex-wrap: wrap; margin-bottom: 9px; }
.ff-activities .ff-field { display: grid; gap: 4px; color: var(--ff-ink); font-size: 14px; font-weight: 700; flex: 1; max-width: 340px; min-width: 140px; }
.ff-activities select { background: #fff; color: var(--ff-ink); border: 2px solid #71899c; border-radius: 12px; min-height: 48px; min-width: 48px; max-width: 100%; padding: 8px 30px 8px 12px; font: inherit; line-height: 1.4; cursor: pointer; text-transform: none; }
.ff-activities .ff-button, .ff-activities .ff-cell {
    appearance: none;
    -webkit-appearance: none;
    font-family: inherit;
    font-style: normal;
    font-weight: 800;
    letter-spacing: normal;
    line-height: 1.3;
    text-transform: none;
    text-decoration: none;
    cursor: pointer;
    min-width: 48px;
    min-height: 48px;
    max-width: 100%;
    border: 2px solid var(--ff-teal);
    color: var(--ff-teal-dark);
    background: #e9f5ef;
    border-radius: 13px;
    padding: 10px 16px;
    box-shadow: 0 4px 0 var(--ff-teal);
    transition: transform .12s ease, box-shadow .12s ease;
    white-space: normal;
    touch-action: manipulation;
    -webkit-tap-highlight-color: transparent;
}
.ff-activities .ff-button:hover { background: #daeee4; color: var(--ff-teal-dark); }
.ff-activities .ff-button:active { transform: translateY(3px); box-shadow: 0 1px 0 var(--ff-teal); }
.ff-activities .ff-button-small { padding: 8px 12px; font-size: 14px; }
.ff-activities .ff-button-primary { background: var(--ff-orange); color: #fff; border-color: var(--ff-orange-dark); box-shadow: 0 4px 0 var(--ff-orange-dark); }
.ff-activities .ff-button-primary:hover { background: #a83b08; color: #fff; }
.ff-activities .ff-button-primary:active { box-shadow: 0 1px 0 var(--ff-orange-dark); }
.ff-activities :is(button, select, summary, [tabindex]):focus-visible { outline: 3px solid var(--ff-focus); outline-offset: 4px; }
.ff-activities .ff-help { font-size: 13px; color: var(--ff-muted); margin: 8px 0 12px; }
.ff-activities .ff-progress-row { display: flex; justify-content: space-between; align-items: center; gap: 10px; flex-wrap: wrap; font-size: 14px; font-weight: 700; margin: 17px 0 7px; }
.ff-activities .ff-stars { color: var(--ff-ink); white-space: normal; }
.ff-activities .ff-stars > span:first-child { color: #946000; display: inline-block; font-size: 19px; }
.ff-activities .ff-progress { appearance: none; -webkit-appearance: none; display: block; height: 10px; width: 100%; border: 0; border-radius: 8px; overflow: hidden; background: #e3e9ed; margin: 0 0 22px; }
.ff-activities .ff-progress::-webkit-progress-bar { background: #e3e9ed; border-radius: 8px; }
.ff-activities .ff-progress::-webkit-progress-value { background: var(--ff-teal); border-radius: 8px; }
.ff-activities .ff-progress::-moz-progress-bar { background: var(--ff-teal); border-radius: 8px; }
.ff-activities .ff-question-card { border-radius: 20px; border: 2px solid #f1d3a1; background: var(--ff-cream); padding: clamp(16px, 3vw, 28px); text-align: center; }
.ff-activities .ff-eyebrow { font-size: 12px; font-weight: 900; letter-spacing: .12em; margin-bottom: 9px; color: #704523; }
.ff-activities .ff-equation { font-size: clamp(34px, 7vw, 60px); font-weight: 900; line-height: 1.2; margin: 0 0 24px; font-variant-numeric: tabular-nums; }
.ff-activities .ff-options { display: grid; grid-template-columns: repeat(var(--ff-choices, 3), minmax(0, 1fr)); gap: 12px; max-width: 560px; margin: 0 auto 7px; }
.ff-activities .ff-answer { font-size: clamp(24px, 4vw, 32px); min-height: 72px; padding: 12px 4px; background: #fff; color: var(--ff-ink); border-color: #647e94; box-shadow: 0 5px 0 #647e94; }
.ff-activities .ff-answer:hover { background: #eaf3fd; color: var(--ff-ink); }
.ff-activities .ff-answer:active { box-shadow: 0 1px 0 #647e94; }
.ff-activities .ff-answer.ff-tried { border-style: dashed; box-shadow: none; color: #526271; background: #f3f4f5; }
.ff-activities .ff-answer.ff-correct { background: var(--ff-teal); color: #fff; border-color: var(--ff-teal-dark); box-shadow: 0 5px 0 var(--ff-teal-dark); }
.ff-activities .ff-answer[aria-disabled="true"] { cursor: default; }
.ff-activities .ff-answer-check { font-size: .7em; }
.ff-activities .ff-hint-box { margin-top: 16px; padding: 16px; border: 2px dashed var(--ff-teal); background: #f0f8f3; border-radius: 14px; }
.ff-activities .ff-hint-text { font-weight: 700; }
.ff-activities .ff-groups { display: flex; gap: 8px; flex-wrap: wrap; }
.ff-activities .ff-dot-group { display: flex; gap: 4px; flex-wrap: wrap; justify-content: center; align-content: center; max-width: 90px; min-width: 42px; min-height: 38px; padding: 8px; border: 2px solid var(--ff-teal); border-radius: 9px; background: #fff; }
.ff-activities .ff-dot { width: 10px; height: 10px; border-radius: 50%; background: var(--ff-teal); display: block; }
.ff-activities .ff-group-number { font-weight: 800; }
.ff-activities .ff-status { border-radius: 13px; min-height: 62px; padding: 14px 16px; background: var(--ff-sky); color: var(--ff-ink); margin: 18px 0 14px; border-left: 4px solid #1d5e99; font-weight: 700; }
.ff-activities .ff-status[data-kind="success"] { background: #e6f4ec; border-color: var(--ff-teal); }
.ff-activities .ff-status[data-kind="support"] { background: var(--ff-cream); border-color: #95610a; }
.ff-activities .ff-actions { display: flex; gap: 13px; flex-wrap: wrap; align-items: center; margin-bottom: 18px; }
.ff-activities .ff-actions .ff-next { margin-left: auto; }
.ff-activities .ff-finish { text-align: center; padding: 24px 14px; background: var(--ff-cream); border-radius: 18px; margin-bottom: 18px; }
.ff-activities .ff-finish-star { font-size: 58px; color: #916000; display: inline-block; }
.ff-activities .ff-finish h3 { font-size: 25px; line-height: 1.25; margin: 8px 0 14px; }
.ff-activities .ff-finish .ff-button { margin: 12px 0 6px; }
.ff-activities .ff-adult-note { border-top: 1px solid #ccd6d9; padding-top: 12px; margin-top: 20px; font-size: 14px; }
.ff-activities .ff-adult-note summary { cursor: pointer; min-height: 48px; padding: 12px 0; font-weight: 800; color: var(--ff-ink); }
.ff-activities .ff-privacy { margin: 12px 0 0; font-size: 12px; color: var(--ff-muted); }
.ff-activities .ff-directions { font-weight: 800; }
.ff-activities .ff-puzzle-layout { display: flex; gap: 22px; flex-wrap: wrap; align-items: flex-start; }
.ff-activities .ff-grid-scroll { max-width: 100%; min-width: 0; overflow: auto; padding: 8px; background: #fff8ec; border: 2px solid #d9bb8e; border-radius: 14px; scrollbar-gutter: stable; overscroll-behavior-x: contain; }
.ff-activities .ff-grid { display: grid; gap: 4px; width: max-content; padding: 3px; touch-action: pan-x pan-y pinch-zoom; user-select: none; -webkit-user-select: none; }
.ff-activities .ff-grid-row { display: grid; grid-template-columns: repeat(var(--ff-size), 44px); gap: 4px; }
.ff-activities .ff-grid-cell-wrapper { width: 44px; height: 44px; }
.ff-activities .ff-cell { position: relative; display: grid; place-items: center; width: 44px; height: 44px; min-width: 44px; min-height: 44px; border-radius: 9px; padding: 0; font-size: 20px; line-height: 1; background: #fff; color: var(--ff-ink); border: 2px solid #708397; box-shadow: 0 2px 0 #708397; touch-action: inherit; }
.ff-activities .ff-cell:hover { background: #edf4fe; color: var(--ff-ink); }
.ff-activities .ff-cell:active { transform: translateY(1px); }
.ff-activities .ff-cell.ff-found { background: var(--ff-teal); border-color: var(--ff-teal-dark); color: #fff; box-shadow: 0 2px 0 var(--ff-teal-dark); }
.ff-activities .ff-cell.ff-found::after { content: "✓"; position: absolute; right: 2px; bottom: 1px; font-size: 10px; }
.ff-activities .ff-cell.ff-preview, .ff-activities .ff-cell.ff-start { background: #ffd166; color: var(--ff-ink); border-color: #65470e; outline: 2px solid #65470e; outline-offset: -5px; }
.ff-activities .ff-cell.ff-hinted { border: 3px dashed #0b4fab; background: #e1edff; color: var(--ff-ink); }
.ff-activities .ff-cell:focus-visible { outline: 3px solid var(--ff-focus); outline-offset: 2px; z-index: 1; }
.ff-activities .ff-grid.ff-drag-enabled { touch-action: none; cursor: crosshair; }
.ff-activities .ff-word-panel { order: 1; flex: 1; min-width: min(190px, 100%); }
.ff-activities .ff-word-panel h3 { font-size: 17px; margin: 0 0 12px; line-height: 1.35; }
.ff-activities .ff-word-list { display: flex; flex-direction: column; gap: 8px; padding: 0; margin: 0; list-style: none; }
.ff-activities .ff-word-item { display: flex; align-items: center; gap: 8px; border: 2px solid #9fadb9; background: #fff; padding: 8px 12px; border-radius: 11px; color: var(--ff-ink); font-weight: 800; font-size: 15px; margin: 0; }
.ff-activities .ff-word-found { border-color: var(--ff-teal); background: #e6f4ec; }
.ff-activities .ff-word-symbol { font-size: 20px; line-height: 1; flex: 0 0 auto; }
.ff-activities .ff-sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0, 0, 0, 0); white-space: nowrap; border: 0; }
@keyframes ff-success-pop { 0%, 100% { transform: scale(1); } 50% { transform: scale(1.25) rotate(-8deg); } }
@keyframes ff-support-nudge { 0%, 100% { transform: translateX(0); } 35% { transform: translateX(2px); } 65% { transform: translateX(-2px); } }
.ff-activities.ff-celebrate .ff-stars > span:first-child { animation: ff-success-pop .42s ease 1; }
.ff-activities.ff-encourage .ff-status { animation: ff-support-nudge .18s ease 1; }
@media (max-width: 600px) {
    .ff-activities .ff-header { margin-bottom: 20px; }
    .ff-activities .ff-pill { font-size: 12px; }
    .ff-activities .ff-options { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; }
    .ff-activities .ff-options .ff-answer:last-child:nth-child(3) { grid-column: 1 / -1; }
    .ff-activities .ff-toolbar { align-items: stretch; }
    .ff-activities .ff-toolbar .ff-field { max-width: none; flex-basis: 100%; }
    .ff-activities .ff-word-panel { order: -1; flex-basis: 100%; }
    .ff-activities .ff-word-list { flex-direction: row; flex-wrap: wrap; }
    .ff-activities .ff-actions .ff-button { flex: 1 1 auto; }
    .ff-activities .ff-actions .ff-next { margin-left: 0; }
    .ff-activities .ff-question-card { padding: 16px 12px; }
}
@media (prefers-reduced-motion: reduce) {
    .ff-activities *, .ff-activities *::before, .ff-activities *::after { animation: none !important; transition: none !important; scroll-behavior: auto !important; }
}
@media (forced-colors: active) {
    .ff-activities .ff-cell.ff-found { border: 3px double ButtonText; }
    .ff-activities .ff-cell.ff-start, .ff-activities .ff-cell.ff-preview { outline: 3px solid Highlight; }
    .ff-activities .ff-cell.ff-hinted { border: 3px dashed Highlight; }
    .ff-activities .ff-button, .ff-activities .ff-cell { box-shadow: none; }
}