/* Biblioteca de atividades prontas (/atividades) — tudo escopado em .lb (classe
   do <body> do layout `library`). A página carrega TAILWIND (os partials reais
   dos blocos de exercício da prévia dependem dele; o preflight já zera listas,
   títulos e links) + landing_grifo (tokens --gf-* e componentes).
   Não usamos .gf-page: os resets dele brigariam com os blocos da prévia. Da
   landing vêm, sem cópia: o grifo (gf-hl), as faixas (gf-band), os tons
   (gf-tint), gf-btn, gf-eyebrow, gf-heading, gf-link, gf-level, gf-hero-halo,
   o bloco escuro (gf-pages), as dúvidas (gf-faq), o CTA final (gf-final) e a
   moldura de janela (gf-lab-chrome). Aqui só entra o que é da biblioteca e a
   escala de tipo, um pouco menor que a da landing (página de catálogo, lida
   em notebook). Sempre tema claro (o layout não liga .dark). */

/* ── Base ─────────────────────────────────────────────────────────── */
.lb .lb-page { display: flex; flex-direction: column; min-height: 100vh; font-feature-settings: 'cv11','ss03'; }
.lb .lb-page > main { flex: 1; outline: none; }
.lb [hidden] { display: none !important; }
/* Ícones do IconHelper (span.inline-block com tamanho fixo) nos componentes daqui. */
.lb :where(.gf-nav, .gf-menu, .gf-btn, .gf-caption-check, .lb-ico) .inline-block { display: inline-block; flex: none; vertical-align: middle; }
.lb :where(.gf-nav, .gf-menu, .gf-btn, .gf-caption-check, .lb-ico) .inline-block > svg { display: block; width: 100%; height: 100%; stroke-width: 1.8; }
.lb :where(.gf-nav, .gf-menu) button, .lb .gf-btn { cursor: pointer; }
/* Foco visível em tudo que é da biblioteca; os blocos da prévia têm o deles. */
.lb :where(a, button, select, summary):focus-visible:not(.lb-preview *) { outline: 3px solid var(--lb-focus, #4f46e5); outline-offset: 3px; border-radius: 10px; }
.lb .gf-nav-links a[aria-current=page] { color: var(--gf-gray-900); font-weight: 600; }
.lb .gf-nav-links a[aria-current=page] > span::before { transform: skewY(-2deg) scaleX(1); }
.lb .gf-menu-auth > .gf-btn:only-child { grid-column: 1 / -1; }
.lb .gf-footer { padding-bottom: 44px; }
.lb main :where(section, div)[id] { scroll-margin-top: 84px; }

/* Títulos: a landing define os dela em .gf-page; aqui a escala é a do catálogo. */
.lb .gf-heading h2, .lb .lb-title { font-size: clamp(26px, 2.75vw, 36px); font-weight: 800; line-height: 1.12; letter-spacing: -.035em; color: var(--gf-gray-900); text-wrap: balance; }
.lb .lb-h2 { font-size: clamp(21px, 2.1vw, 26px); font-weight: 800; line-height: 1.2; letter-spacing: -.025em; color: var(--gf-gray-900); text-wrap: balance; }
.lb .gf-heading { gap: 40px; margin-bottom: 34px; }
.lb .gf-heading h2 { margin-top: 14px; }
.lb .gf-heading-side { max-width: 27em; padding-bottom: 4px; font-size: 16.5px; line-height: 1.6; text-wrap: pretty; }
.lb .gf-eyebrow { margin: 0; }
.lb .gf-caption { margin-top: 0; }

.lb .lb-section { position: relative; padding: 76px 0; overflow: clip; }
.lb .lb-section > .gf-wrap { position: relative; z-index: 1; }
.lb .lb-section--tint { background-color: var(--gf-gray-50); background-image: radial-gradient(var(--gf-dot) 1.4px, transparent 1.5px); background-size: 24px 24px; border-block: 1px solid var(--gf-gray-100); }

/* ── Hero ─────────────────────────────────────────────────────────── */
.lb .lb-hero { position: relative; padding: 50px 0 60px; background: linear-gradient(180deg, var(--gf-hero-top) 0%, var(--gf-bg) 72%); overflow: clip; }
.lb .lb-hero .gf-hero-halo { top: -18%; right: -10%; width: min(760px, 62vw); }
.lb .lb-hero > .gf-wrap { position: relative; }
.lb .lb-hero-grid { display: grid; grid-template-columns: minmax(0, 1.12fr) minmax(0, .88fr); align-items: center; gap: 56px; }
.lb .lb-hero h1 { margin-top: 18px; font-size: clamp(33px, 3.75vw, 50px); font-weight: 800; line-height: 1.07; letter-spacing: -.04em; color: var(--gf-gray-900); text-wrap: balance; }
.lb .lb-hero-lead { max-width: 34em; margin-top: 18px; font-size: clamp(16.5px, 1.3vw, 18px); line-height: 1.6; color: var(--gf-gray-600); text-wrap: pretty; }
.lb .lb-hero--solo .lb-hero-grid { grid-template-columns: minmax(0, 1fr); }
.lb .lb-hero--solo .lb-hero-copy { max-width: 760px; }

/* Atalhos por série e nível: o ponto de entrada principal do catálogo. */
.lb .lb-quick { display: flex; flex-direction: column; max-width: 640px; margin-top: 26px; padding: 6px 16px; background: var(--gf-surface); border: 1px solid var(--gf-gray-200); border-radius: 18px; box-shadow: var(--gf-shadow-md); }
.lb .lb-quick-row { display: grid; grid-template-columns: 46px minmax(0, 1fr); align-items: center; gap: 12px; padding: 10px 0; }
.lb .lb-quick-row + .lb-quick-row { border-top: 1px solid var(--gf-gray-100); }
.lb .lb-quick-label { font-size: 11.5px; font-weight: 700; letter-spacing: .08em; text-transform: uppercase; color: var(--gf-gray-500); }
.lb .lb-quick ul { display: flex; flex-wrap: wrap; gap: 7px; }
.lb .lb-quick-link { display: inline-flex; align-items: center; min-height: 36px; padding: 0 12px; font-size: 14.5px; font-weight: 600; line-height: 1.2; white-space: nowrap; color: var(--gf-gray-900); background: var(--gf-gray-50); border: 1px solid var(--gf-gray-200); border-radius: 999px; transition: background-color .15s, border-color .15s, color .15s, transform .15s; }
.lb .lb-quick-link:hover { color: var(--gf-accent-ink); background: rgb(var(--gf-lilac) / .3); border-color: rgb(var(--gf-lilac) / .9); transform: translateY(-1px); }
.lb .lb-hero-actions { display: flex; flex-wrap: wrap; align-items: center; gap: 12px 20px; margin-top: 22px; }

/* Leque com as primeiras atividades reais do catálogo (tudo em em, escalando
   com a largura do contêiner, como a composição do hero da landing). */
.lb .lb-fan { container-type: inline-size; width: 100%; max-width: 500px; margin-inline: auto; }
.lb .lb-fan-inner { position: relative; aspect-ratio: 1 / 1.06; font-size: 14.5px; font-size: 2.95cqw; line-height: 1.4; }
.lb .lb-fan-list { position: absolute; inset: 0; }
.lb .lb-fan-band { position: absolute; display: block; pointer-events: none; border-radius: 1.4em 3.6em 1.8em 3.2em / 3em 1.4em 3.4em 1.6em; transform-origin: 0 50%; }
.lb .lb-fan-band--lilac { left: -7%; top: 27%; width: 114%; height: 5.4em; background: rgb(var(--gf-lilac) / .4); transform: rotate(-9deg); }
.lb .lb-fan-band--yellow { left: 26%; top: 80%; width: 78%; height: 4em; background: rgb(var(--gf-yellow) / .55); transform: rotate(-6deg); }
.lb .lb-fan-ticks { width: 4.2em; right: -5%; top: -7%; transform: rotate(30deg); --hl: var(--gf-yellow); }
.lb .lb-fan-ticks path { stroke: rgb(var(--hl) / .95); }
.lb .lb-fan-item { position: absolute; width: 63%; }
.lb .lb-fan-item--1 { z-index: 3; left: 0; top: 2%; transform: rotate(-4deg); }
.lb .lb-fan-item--2 { z-index: 2; right: 0; top: 33%; transform: rotate(3.5deg); }
.lb .lb-fan-item--3 { z-index: 1; left: 7%; top: 64%; transform: rotate(-1.5deg); }
.lb .lb-fan--2 .lb-fan-inner { aspect-ratio: 1 / .78; }
.lb .lb-fan--2 .lb-fan-item--1 { top: 4%; }
.lb .lb-fan--2 .lb-fan-item--2 { top: 46%; }
.lb .lb-fan--2 .lb-fan-band--yellow { top: 86%; }
.lb .lb-fan--1 .lb-fan-inner { aspect-ratio: 1 / .6; }
.lb .lb-fan--1 .lb-fan-item--1 { left: 12%; top: 12%; width: 76%; transform: rotate(-3deg); }
.lb .lb-fan--1 .lb-fan-band--lilac { top: 38%; }
.lb .lb-fan--1 .lb-fan-band--yellow { display: none; }
.lb .lb-fan-card { display: flex; flex-direction: column; overflow: hidden; background: var(--gf-surface); border: 1px solid var(--gf-gray-200); border-radius: 1.1em; box-shadow: var(--gf-shadow-xl); transition: translate .22s ease, box-shadow .22s ease, border-color .2s; }
.lb .lb-fan-card:hover { translate: 0 -5px; border-color: var(--gf-indigo-300); }
.lb .lb-fan-cover { display: block; width: 100%; height: auto; aspect-ratio: 8 / 3; object-fit: cover; background: var(--gf-indigo-50); }
.lb .lb-fan-body { display: flex; flex-direction: column; gap: .5em; padding: .85em 1em 1em; }
.lb .lb-fan-meta { display: flex; align-items: center; gap: .55em; min-width: 0; font-size: .8em; font-weight: 600; color: var(--gf-gray-600); }
.lb .lb-fan-meta > span:last-child { overflow: hidden; white-space: nowrap; text-overflow: ellipsis; }
.lb .lb-fan .gf-level { min-width: 0; padding: .1em .7em; font-size: 1em; }
.lb .lb-fan-card strong { display: -webkit-box; overflow: hidden; font-size: 1.1em; font-weight: 800; line-height: 1.25; letter-spacing: -.02em; color: var(--gf-gray-900); -webkit-box-orient: vertical; -webkit-line-clamp: 2; line-clamp: 2; }

/* Cabeçalho curto da página filtrada: os resultados vêm logo abaixo. */
.lb .lb-hero--results { padding: 26px 0 6px; background: linear-gradient(180deg, var(--gf-hero-top), transparent); }
.lb .lb-hero--results h1 { margin-top: 14px; font-size: clamp(27px, 3vw, 38px); }
.lb .lb-hero--results .lb-hero-lead { margin-top: 10px; font-size: 16.5px; }

/* ── Como funciona (faixa de três passos) ─────────────────────────── */
.lb .lb-steps { background: var(--gf-bg); border-block: 1px solid var(--gf-gray-100); }
.lb .lb-steps-inner { display: grid; grid-template-columns: minmax(0, .55fr) minmax(0, 3fr); align-items: center; gap: 28px; padding-block: 26px; }
.lb .lb-steps ol { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); }
.lb .lb-steps li { display: flex; align-items: flex-start; gap: 14px; padding: 2px 26px; }
.lb .lb-steps li + li { border-left: 1px solid var(--gf-gray-100); }
.lb .lb-steps li:last-child { padding-right: 0; }
.lb .lb-step-num { display: grid; place-items: center; flex: none; width: 40px; height: 40px; font-size: 17px; font-weight: 800; line-height: 1; border-radius: 12px; transform: rotate(-4deg); }
.lb .lb-steps li:nth-child(2) .lb-step-num { transform: rotate(3deg); }
.lb .lb-step-copy { display: flex; flex-direction: column; gap: 2px; min-width: 0; }
.lb .lb-step-copy strong { font-size: 16px; font-weight: 700; line-height: 1.3; letter-spacing: -.012em; color: var(--gf-gray-900); }
.lb .lb-step-copy span { font-size: 14.5px; line-height: 1.5; color: var(--gf-gray-600); }

/* ── Cards ────────────────────────────────────────────────────────── */
.lb .lb-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(264px, 1fr)); gap: 20px; }
.lb .lb-card { display: flex; flex-direction: column; height: 100%; overflow: hidden; background: var(--gf-surface); border: 1px solid var(--gf-gray-200); border-radius: 18px; box-shadow: var(--gf-shadow-sm); transition: transform .18s ease, box-shadow .22s ease, border-color .18s ease; }
.lb .lb-card:hover { transform: translateY(-3px); border-color: var(--gf-indigo-200); box-shadow: var(--gf-shadow-md); }
.lb .lb-card-media { display: block; overflow: hidden; border-bottom: 1px solid var(--gf-gray-100); }
.lb .lb-card-cover { display: block; width: 100%; height: auto; aspect-ratio: 8 / 3; object-fit: cover; background: var(--gf-indigo-50); transition: transform .35s ease; }
.lb .lb-card:hover .lb-card-cover { transform: scale(1.03); }
.lb .lb-card-cover--empty { background: linear-gradient(120deg, #6366f1, #8b5cf6 55%, #d946ef); }
.lb .lb-card-body { display: flex; flex: 1; flex-direction: column; gap: 9px; padding: 15px 18px 14px; }
.lb .lb-card-title { font-size: 17.5px; font-weight: 700; line-height: 1.3; letter-spacing: -.018em; color: var(--gf-gray-900); overflow-wrap: anywhere; }
.lb .lb-card-text { display: -webkit-box; overflow: hidden; font-size: 14.5px; line-height: 1.5; color: var(--gf-gray-600); -webkit-box-orient: vertical; -webkit-line-clamp: 2; line-clamp: 2; }
.lb .lb-card-skills { display: block; margin-top: auto; padding-top: 2px; overflow: hidden; font-size: 13.5px; font-weight: 500; white-space: nowrap; text-overflow: ellipsis; color: var(--gf-gray-600); }
.lb .lb-card-foot { display: flex; align-items: center; justify-content: space-between; gap: 10px; margin-top: auto; padding-top: 11px; border-top: 1px solid var(--gf-gray-100); }
.lb .lb-card-skills + .lb-card-foot { margin-top: 2px; }
.lb .lb-card-go { display: inline-flex; align-items: center; gap: 6px; margin-left: auto; font-size: 14px; font-weight: 700; color: var(--gf-accent-strong); white-space: nowrap; }
.lb .lb-card-go > .inline-block { transition: transform .2s ease; }
.lb .lb-card:hover .lb-card-go > .inline-block { transform: translateX(3px); }

.lb .lb-badge { display: inline-block; align-self: flex-start; max-width: 100%; padding: 3px 11px; font-size: 13px; font-weight: 600; line-height: 1.45; color: var(--gf-accent-strong); background: var(--gf-indigo-50); border: 1px solid var(--gf-indigo-200); border-radius: 999px; }
.lb .lb-badge b { font-weight: 800; letter-spacing: .01em; }
.lb .lb-tag { display: inline-flex; align-items: center; padding: 2px 9px; font-size: 12.5px; font-weight: 600; line-height: 1.5; color: var(--gf-gray-700); background: var(--gf-gray-100); border-radius: 999px; }
.lb .lb-tag--time { color: #713f12; background: rgb(var(--gf-yellow) / .45); }

/* ── Comece por aqui (destaque + linhas compactas) ────────────────── */
.lb .lb-featured-grid { display: grid; grid-template-columns: minmax(0, 1.08fr) minmax(0, 1fr); gap: 22px; align-items: stretch; }
.lb .lb-featured-grid--solo { grid-template-columns: minmax(0, 620px); }
.lb .lb-card--lead .lb-card-body { gap: 11px; padding: 20px 24px 18px; }
.lb .lb-card--lead .lb-card-title { font-size: clamp(21px, 2vw, 25px); line-height: 1.2; letter-spacing: -.028em; }
.lb .lb-card--lead .lb-card-text { font-size: 15.5px; line-height: 1.55; -webkit-line-clamp: 3; line-clamp: 3; }
.lb .lb-picks { display: flex; flex-direction: column; gap: 14px; }
.lb .lb-picks li { display: flex; flex: 1; }
.lb .lb-pickrow { display: grid; grid-template-columns: 148px minmax(0, 1fr) auto; align-items: center; gap: 16px; width: 100%; padding: 12px 16px 12px 12px; background: var(--gf-surface); border: 1px solid var(--gf-gray-200); border-radius: 18px; box-shadow: var(--gf-shadow-sm); transition: transform .18s ease, box-shadow .22s ease, border-color .18s ease; }
.lb .lb-pickrow:hover { transform: translateY(-2px); border-color: var(--gf-indigo-200); box-shadow: var(--gf-shadow-md); }
.lb .lb-pickrow-cover { display: block; width: 100%; height: 100%; min-height: 96px; aspect-ratio: 3 / 2; object-fit: cover; background: var(--gf-indigo-50); border-radius: 11px; }
.lb .lb-pickrow-body { display: flex; flex-direction: column; align-items: flex-start; gap: 6px; min-width: 0; }
.lb .lb-pickrow-meta { display: flex; align-items: center; gap: 8px; font-size: 13.5px; font-weight: 600; color: var(--gf-gray-600); }
.lb .lb-pickrow-title { font-size: 17px; font-weight: 700; line-height: 1.28; letter-spacing: -.018em; color: var(--gf-gray-900); overflow-wrap: anywhere; }
.lb .lb-pickrow-facts { font-size: 13.5px; font-weight: 500; color: var(--gf-gray-600); }
.lb .lb-pickrow-go { display: grid; place-items: center; flex: none; width: 38px; height: 38px; color: var(--gf-accent-strong); background: var(--gf-indigo-50); border-radius: 50%; transition: transform .2s ease, background-color .2s, color .2s; }
.lb .lb-pickrow:hover .lb-pickrow-go { color: #fff; background: var(--gf-indigo-600); transform: translateX(3px); }

/* ── Por série (abas) ─────────────────────────────────────────────── */
.lb .lb-tabs { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 22px; }
.lb .lb-tab { display: inline-flex; align-items: center; gap: 9px; min-height: 44px; padding: 0 12px 0 18px; font-size: 15px; font-weight: 600; white-space: nowrap; color: var(--gf-gray-700); background: var(--gf-surface); border: 1px solid var(--gf-gray-200); border-radius: 999px; box-shadow: var(--gf-shadow-sm); transition: background-color .15s, border-color .15s, color .15s, box-shadow .2s; }
.lb .lb-tab small { min-width: 24px; padding: 2px 7px; font-size: 12px; font-weight: 700; line-height: 1.4; text-align: center; color: var(--gf-gray-600); background: var(--gf-gray-100); border-radius: 999px; }
.lb .lb-tab:hover { color: var(--gf-accent-strong); border-color: var(--gf-indigo-200); }
.lb .lb-tab[aria-selected=true] { color: #fff; background: var(--gf-indigo-600); border-color: var(--gf-indigo-600); box-shadow: 0 1px 2px rgb(49 46 129 / .3), 0 10px 22px -10px rgb(79 70 229 / .6); }
.lb .lb-tab[aria-selected=true] small { color: var(--gf-indigo-700); background: #fff; }
.lb .lb-panel + .lb-panel { margin-top: 36px; }
.lb .lb-panel-title { margin-bottom: 14px; font-size: 19px; font-weight: 800; letter-spacing: -.02em; color: var(--gf-gray-900); }
/* Com as abas ligadas, o nome da série já está na aba: o título fica só para leitores de tela. */
.lb .is-tabbed .lb-panel-title { position: absolute; width: 1px; height: 1px; margin: -1px; overflow: hidden; clip: rect(0, 0, 0, 0); white-space: nowrap; }
.lb .lb-row { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 20px; }
.lb .lb-panel-more { display: flex; justify-content: flex-end; margin-top: 14px; }
.lb .gf-link { margin-top: 0; }

/* ── Por nível, habilidade e tema ─────────────────────────────────── */
.lb .lb-explore-grid { display: flex; flex-direction: column; gap: 30px; }
.lb .lb-explore-label { margin-bottom: 12px; font-size: 12px; font-weight: 700; letter-spacing: .09em; text-transform: uppercase; color: var(--gf-gray-500); }
.lb .lb-levels { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 14px; }
.lb .lb-explore-pills { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.35fr); gap: 26px 48px; }
.lb .lb-explore-pills > :only-child { grid-column: 1 / -1; }
.lb .lb-level { display: flex; align-items: center; gap: 14px; height: 100%; padding: 16px 16px 16px 20px; background: var(--gf-surface); border: 1px solid var(--gf-gray-200); border-radius: 18px; box-shadow: var(--gf-shadow-sm); transition: transform .18s ease, box-shadow .22s ease, border-color .18s ease; }
.lb .lb-level:hover { transform: translateY(-2px); border-color: var(--gf-indigo-200); box-shadow: var(--gf-shadow-md); }
.lb .lb-level-code { flex: none; min-width: 1.9em; font-size: 27px; font-weight: 800; line-height: 1.2; letter-spacing: -.04em; color: var(--gf-gray-900); }
.lb .lb-level-copy { display: flex; flex: 1; flex-direction: column; min-width: 0; }
.lb .lb-level-copy strong { font-size: 15.5px; font-weight: 700; line-height: 1.3; letter-spacing: -.01em; color: var(--gf-gray-900); }
.lb .lb-level-copy span { font-size: 13.5px; color: var(--gf-gray-600); }
.lb .lb-level-go { display: grid; place-items: center; flex: none; width: 32px; height: 32px; color: var(--gf-gray-500); border-radius: 50%; transition: transform .2s ease, color .2s, background-color .2s; }
.lb .lb-level:hover .lb-level-go { color: var(--gf-accent-strong); background: var(--gf-indigo-50); transform: translateX(3px); }
.lb .lb-pills { display: flex; flex-wrap: wrap; gap: 8px; }
.lb .lb-pill { display: inline-flex; align-items: center; gap: 8px; min-height: 40px; padding: 0 8px 0 14px; font-size: 14.5px; font-weight: 600; white-space: nowrap; color: var(--gf-gray-900); background: var(--gf-surface); border: 1px solid var(--gf-gray-200); border-radius: 999px; box-shadow: var(--gf-shadow-sm); transition: background-color .15s, border-color .15s, color .15s; }
.lb .lb-pill small { min-width: 24px; padding: 2px 7px; font-size: 12px; font-weight: 700; line-height: 1.4; text-align: center; color: var(--gf-gray-600); background: var(--gf-gray-100); border-radius: 999px; }
.lb .lb-pill:hover { color: var(--gf-accent-ink); background: var(--gf-indigo-50); border-color: var(--gf-indigo-200); }

/* ── Todas as atividades (filtros + grade) ────────────────────────── */
.lb .lb-explore { padding-bottom: 60px; }
.lb .lb-listing { background: linear-gradient(180deg, var(--gf-bg) 0, var(--gf-indigo-50) 180px, var(--gf-indigo-50) 100%); }
.lb .lb-listing--results { padding: 22px 0 72px; background: none; }
.lb .lb-catalog { display: flex; flex-direction: column; gap: 22px; }
.lb .lb-catalog > .gf-heading { margin-bottom: 8px; }
.lb .lb-catalog--empty { padding: 8px 0 80px; }

.lb .lb-filters { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)) auto; align-items: end; gap: 12px; padding: 16px; background: var(--gf-surface); border: 1px solid var(--gf-gray-200); border-radius: 18px; box-shadow: var(--gf-shadow-md); }
.lb .lb-field { display: flex; flex-direction: column; gap: 6px; min-width: 0; }
.lb .lb-field label { font-size: 12px; font-weight: 700; letter-spacing: .06em; text-transform: uppercase; color: var(--gf-gray-600); }
.lb .lb-field select { width: 100%; min-height: 44px; padding: 0 34px 0 12px; font: inherit; font-size: 15px; color: var(--gf-gray-900); background-color: var(--gf-surface); border: 1px solid var(--gf-gray-300); border-radius: 11px; }
.lb .lb-field select:focus { border-color: var(--gf-indigo-400); box-shadow: 0 0 0 3px var(--gf-indigo-50); }
.lb .lb-filters .gf-btn { min-height: 44px; }

.lb .lb-toolbar { display: flex; flex-wrap: wrap; align-items: center; gap: 10px 14px; }
.lb .lb-count { font-size: 15px; font-weight: 600; color: var(--gf-gray-700); }
.lb .lb-chips { display: flex; flex-wrap: wrap; gap: 8px; }
.lb .lb-chip { display: inline-flex; align-items: center; gap: 6px; padding: 5px 8px 5px 12px; font-size: 13.5px; font-weight: 600; color: var(--gf-accent-strong); background: var(--gf-indigo-50); border: 1px solid var(--gf-indigo-200); border-radius: 999px; }
.lb .lb-chip:hover { background: var(--gf-indigo-100); }
.lb .lb-chip-x { display: inline-grid; place-items: center; width: 18px; height: 18px; font-size: 15px; line-height: 1; border-radius: 50%; }
.lb .lb-clear { font-size: 14px; font-weight: 600; color: var(--gf-accent-strong); text-decoration: underline; text-underline-offset: 3px; }

.lb .lb-empty { padding: 44px 24px; text-align: center; background: var(--gf-gray-50); border: 1px dashed var(--gf-gray-300); border-radius: 18px; }
.lb .lb-empty h2 { font-size: 21px; font-weight: 800; letter-spacing: -.02em; color: var(--gf-gray-900); }
.lb .lb-empty p { max-width: 34em; margin: 8px auto 0; font-size: 15.5px; color: var(--gf-gray-600); }
.lb .lb-empty .gf-btn, .lb .lb-empty .lb-clear { display: inline-flex; margin-top: 18px; }

.lb .lb-pages { display: flex; align-items: center; justify-content: center; gap: 14px; font-size: 14.5px; font-weight: 600; color: var(--gf-gray-600); }
.lb .lb-pages .gf-btn[aria-disabled=true] { opacity: .45; pointer-events: none; }

.lb .lb-band { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 20px; margin-top: 18px; padding: 28px 32px; background: var(--gf-indigo-50); border: 1px solid var(--gf-indigo-200); border-radius: 22px; }
.lb .lb-band > div:first-child { flex: 1 1 320px; min-width: 0; }
.lb .lb-band p { max-width: 44em; margin-top: 6px; font-size: 15.5px; color: var(--gf-gray-600); }
.lb .lb-band form { margin: 0; }

/* ── Ponte para o produto (bloco escuro da landing: gf-pages) ─────── */
.lb .lb-bridge { --lb-focus: #fde047; }
.lb .lb-bridge .gf-heading h2 { color: #fff; }
.lb .lb-bridge-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 20px; }
.lb .lb-bridge-tile { display: flex; flex-direction: column; align-items: flex-start; padding: 26px 26px 28px; background: rgb(255 255 255 / .06); border: 1px solid rgb(255 255 255 / .13); border-radius: 22px; }
.lb .lb-bridge .gf-tint--lilac { color: #3b0764; background: rgb(var(--gf-lilac)); }
.lb .lb-bridge .gf-tint--yellow { color: #713f12; background: rgb(var(--gf-yellow)); }
.lb .lb-bridge .gf-tint--mint { color: #064e3b; background: rgb(var(--gf-mint)); }
.lb .lb-bridge-tile h3 { margin-top: 18px; font-size: 21px; font-weight: 800; line-height: 1.2; letter-spacing: -.028em; color: #fff; }
.lb .lb-bridge-tile p { margin-top: 10px; font-size: 15.5px; line-height: 1.6; color: var(--gf-indigo-200); }
.lb .lb-bridge-actions { display: flex; flex-wrap: wrap; align-items: center; gap: 14px 26px; margin-top: 32px; }
.lb .lb-bridge-link { display: inline-flex; align-items: center; gap: 8px; padding-block: 8px; font-size: 15.5px; font-weight: 600; color: #fff; }
.lb .lb-bridge-link > span { text-decoration: underline; text-decoration-color: rgb(var(--gf-lilac) / .8); text-decoration-thickness: 2px; text-underline-offset: 5px; }
.lb .lb-bridge-link > .inline-block { transition: transform .2s ease; }
.lb .lb-bridge-link:hover > .inline-block { transform: translateX(4px); }

/* ── Dúvidas e CTA final (peças da landing, na escala do catálogo) ── */
.lb .lb-faq { padding: 80px 0; }
.lb .gf-faq-intro .lb-title { margin-top: 14px; }
.lb .gf-faq-intro .gf-heading-side { margin-top: 16px; }
.lb .gf-faq-double { margin-top: 26px; }
.lb .gf-faq summary { padding: 18px 22px; font-size: 17px; }
.lb .gf-faq details > p { padding: 0 22px 22px; font-size: 15.5px; line-height: 1.65; }
.lb .gf-faq-chevron { width: 34px; height: 34px; }
.lb .lb-final { padding: 104px 0 112px; }
.lb .lb-final h2 { max-width: 15em; font-size: clamp(30px, 4.3vw, 56px); font-weight: 800; line-height: 1.05; letter-spacing: -.045em; color: var(--gf-gray-900); text-wrap: balance; }
.lb .lb-final p { margin-top: 20px; font-size: clamp(17px, 1.5vw, 20px); }
.lb .lb-final-actions { display: flex; flex-wrap: wrap; justify-content: center; gap: 14px; margin-top: 32px; }
.lb .lb-final .gf-btn { margin-top: 0; }
.lb .lb-final .gf-final-ticks { width: 54px; }

/* ── Página da atividade ──────────────────────────────────────────── */
.lb .lb-hero--activity { padding: 22px 0 56px; }
.lb .lb-hero--activity .gf-hero-halo { top: -42%; width: min(640px, 55vw); }
.lb .lb-activity { display: flex; flex-direction: column; gap: 60px; padding: 8px 0 80px; }
.lb .lb-crumbs { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; font-size: 14px; font-weight: 500; color: var(--gf-gray-500); }
.lb .lb-crumbs a { color: var(--gf-accent-strong); text-decoration: underline; text-underline-offset: 3px; }
.lb .lb-crumbs [aria-current=page] { min-width: 0; overflow-wrap: anywhere; color: var(--gf-gray-600); }
.lb .lb-notice { padding: 10px 14px; font-size: 14.5px; font-weight: 600; color: var(--gf-note-text); background: var(--gf-note-bg); border: 1px solid var(--gf-note-line); border-radius: 12px; }

.lb .lb-activity-head { display: grid; grid-template-columns: minmax(0, 1.05fr) minmax(0, .95fr); align-items: center; gap: 52px; margin-top: 30px; }
.lb .lb-activity-copy { display: flex; flex-direction: column; align-items: flex-start; gap: 16px; min-width: 0; }
.lb .lb-activity-copy h1 { margin-top: 0; font-size: clamp(29px, 3.3vw, 42px); line-height: 1.1; letter-spacing: -.035em; overflow-wrap: anywhere; }
.lb .lb-activity-lead { font-size: 17px; line-height: 1.6; color: var(--gf-gray-600); text-wrap: pretty; }
.lb .lb-meta { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; }
.lb .lb-activity-media { position: relative; padding: 4% 2% 6%; }
.lb .lb-activity-media .lb-fan-band--lilac { left: -8%; top: 18%; width: 112%; height: 34%; }
.lb .lb-activity-media .lb-fan-band--yellow { left: 34%; top: 72%; width: 70%; height: 22%; }
.lb .lb-activity-cover { position: relative; display: block; width: 100%; height: auto; aspect-ratio: 8 / 3; object-fit: cover; background: var(--gf-indigo-50); border: 1px solid var(--gf-gray-200); border-radius: 20px; box-shadow: var(--gf-shadow-xl); transform: rotate(1.6deg); }
.lb .lb-activity-cover--empty { background: linear-gradient(120deg, #6366f1, #8b5cf6 55%, #d946ef); }

.lb .lb-actions { display: flex; flex-wrap: wrap; align-items: center; gap: 12px; margin-top: 6px; }
.lb .lb-actions form { margin: 0; }
.lb .lb-actions-note { display: flex; align-items: center; gap: 9px; flex-basis: 100%; font-size: 14px; font-weight: 500; color: var(--gf-gray-600); }

.lb .lb-activity-heading { display: flex; flex-direction: column; align-items: flex-start; gap: 12px; }
.lb .lb-activity-heading--row { flex-direction: row; align-items: flex-end; justify-content: space-between; gap: 16px 24px; flex-wrap: wrap; }
.lb .lb-activity-heading--row > div { display: flex; flex-direction: column; align-items: flex-start; gap: 12px; }
.lb .lb-outline { display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: 12px; margin-top: 22px; counter-reset: lb-step; }
.lb .lb-outline li { display: flex; align-items: flex-start; gap: 12px; padding: 14px 16px; background: var(--gf-surface); border: 1px solid var(--gf-gray-200); border-radius: 16px; box-shadow: var(--gf-shadow-sm); counter-increment: lb-step; }
.lb .lb-outline li::before { content: counter(lb-step); display: inline-grid; place-items: center; flex: none; width: 30px; height: 30px; font-size: 13.5px; font-weight: 800; color: #581c87; background: rgb(var(--gf-lilac) / .32); border-radius: 9px; transform: rotate(-4deg); }
.lb .lb-outline li:nth-child(3n+2)::before { color: #713f12; background: rgb(var(--gf-yellow) / .5); transform: rotate(3deg); }
.lb .lb-outline li:nth-child(3n)::before { color: #065f46; background: rgb(var(--gf-mint) / .4); }
.lb .lb-outline strong { display: block; font-size: 15px; font-weight: 700; color: var(--gf-gray-900); }
.lb .lb-outline span { display: block; font-size: 14px; line-height: 1.45; color: var(--gf-gray-600); overflow-wrap: anywhere; }

/* Prévia interativa: os mesmos cartões do preview do professor, dentro de uma
   "janela" (gf-lab-chrome da landing) com o fundo do builder. 16px de base. */
.lb .lb-preview-wrap { margin-top: 22px; overflow: hidden; background: var(--gf-gray-50); border: 1px solid var(--gf-gray-200); border-radius: 22px; box-shadow: 0 2px 4px rgb(17 24 39 / .04), 0 30px 60px -30px rgb(79 70 229 / .28); }
.lb .lb-preview-chrome { background: var(--gf-surface); }
.lb .lb-preview-stage { padding: 22px 24px 26px; }
.lb .lb-preview-hint { display: flex; align-items: center; gap: 10px; max-width: 900px; margin: 0 auto 20px; padding: 10px 14px; font-size: 14.5px; font-weight: 600; color: #065f46; background: rgb(var(--gf-mint) / .28); border-radius: 12px; }
.lb .lb-preview { max-width: 900px; margin-inline: auto; font-size: 16px; line-height: 1.5; color: #374151; }

/* Faixa "leve para a sua turma": o bloco escuro da landing, em cartão. */
.lb .lb-band--dark { --lb-focus: #fde047; margin-top: 0; padding: 36px 40px; color: var(--gf-indigo-200); background: radial-gradient(70% 90% at 92% 0%, rgb(99 102 241 / .36), transparent 70%), radial-gradient(50% 70% at 0% 100%, rgb(206 147 255 / .18), transparent 70%), var(--gf-indigo-950); border: 0; border-radius: 26px; }
.lb .lb-band--dark .lb-title { color: #fff; }
.lb .lb-band--dark p { font-size: 16px; color: var(--gf-indigo-200); }
.lb .lb-band-actions { display: flex; flex-wrap: wrap; align-items: center; gap: 12px 22px; }
.lb .lb-band--dark .gf-btn { color: var(--gf-indigo-700); background: #fff; box-shadow: 0 1px 2px rgb(30 27 75 / .3), 0 12px 26px -10px rgb(30 27 75 / .6); }
.lb .lb-band--dark .gf-btn:hover { background: var(--gf-indigo-50); }
.lb .lb-band-link { padding-block: 8px; font-size: 15px; font-weight: 600; color: #fff; text-decoration: underline; text-decoration-color: rgb(var(--gf-lilac) / .8); text-decoration-thickness: 2px; text-underline-offset: 5px; }
.lb .lb-grid--related { margin-top: 22px; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); }

/* ── Telas menores ────────────────────────────────────────────────── */
@media (max-width: 1100px) {
  .lb .lb-hero-grid { gap: 36px; }
  .lb .lb-steps-inner { grid-template-columns: minmax(0, 1fr); gap: 16px; padding-block: 24px; }
  .lb .lb-steps li:first-child { padding-left: 0; }
  /* Fileira das abas: rola na horizontal, com encaixe (as setas do teclado e o
     Tab levam o foco de card em card, e o navegador rola junto). */
  .lb .lb-row { display: flex; gap: 16px; margin-inline: -32px; padding: 4px 32px 14px; overflow-x: auto; overscroll-behavior-x: contain; scroll-snap-type: x proximity; scroll-padding-inline: 32px; -webkit-overflow-scrolling: touch; }
  .lb .lb-row > li { flex: 0 0 min(300px, 78vw); scroll-snap-align: start; }
  .lb .lb-levels { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .lb .lb-bridge-grid { gap: 16px; }
  .lb .lb-bridge-tile { padding: 22px; }
}
@media (max-width: 920px) {
  .lb .lb-section { padding: 60px 0; }
  .lb .lb-hero { padding: 36px 0 44px; }
  .lb .lb-hero-grid { grid-template-columns: minmax(0, 1fr); }
  /* O leque é ilustração: em tela estreita o catálogo começa logo abaixo. */
  .lb .lb-fan { display: none; }
  .lb .gf-heading { gap: 14px; margin-bottom: 28px; }
  .lb .lb-featured-grid { grid-template-columns: minmax(0, 1fr); }
  .lb .lb-explore-pills { grid-template-columns: minmax(0, 1fr); }
  .lb .lb-steps ol { grid-template-columns: minmax(0, 1fr); gap: 14px; }
  .lb .lb-steps li, .lb .lb-steps li:last-child { padding: 0; }
  .lb .lb-steps li + li { border-left: 0; }
  .lb .lb-bridge-grid { grid-template-columns: minmax(0, 1fr); }
  .lb .lb-filters { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .lb .lb-filters .gf-btn { grid-column: 1 / -1; }
  .lb .lb-activity-head { grid-template-columns: minmax(0, 1fr); gap: 26px; margin-top: 20px; }
  .lb .lb-activity-media { order: -1; max-width: 560px; }
  .lb .lb-faq { padding: 60px 0; }
  .lb .lb-final { padding: 80px 0 88px; }
}
@media (max-width: 720px) {
  .lb .gf-wrap { width: min(1180px, calc(100% - 32px)); }
  .lb .gf-nav-divider { display: none; }
  .lb .lb-section { padding: 52px 0; }
  .lb .gf-heading { gap: 12px; margin-bottom: 24px; }
  .lb .gf-heading-side { font-size: 15.5px; }
  .lb .lb-hero { padding: 30px 0 38px; }
  .lb .lb-quick { padding: 4px 14px; }
  .lb .lb-quick-row { grid-template-columns: minmax(0, 1fr); gap: 8px; padding: 12px 0; }
  .lb .lb-quick-link { min-height: 44px; padding: 0 15px; }
  .lb .lb-hero-actions .gf-btn { width: 100%; }
  .lb .lb-tabs { flex-wrap: nowrap; margin-inline: -16px; padding: 4px 16px 10px; overflow-x: auto; overscroll-behavior-x: contain; -webkit-overflow-scrolling: touch; }
  .lb .lb-tab { flex: none; }
  .lb .lb-row { margin-inline: -16px; padding-inline: 16px; scroll-padding-inline: 16px; }
  .lb .lb-pickrow { grid-template-columns: 104px minmax(0, 1fr); gap: 12px; padding: 10px 12px 10px 10px; }
  .lb .lb-pickrow-cover { min-height: 0; height: 104px; aspect-ratio: 1; }
  .lb .lb-pickrow-go { display: none; }
  .lb .lb-pickrow-meta { display: flex; align-items: center; gap: 8px; font-size: 13.5px; font-weight: 600; color: var(--gf-gray-600); }
.lb .lb-pickrow-title { font-size: 16px; }
  .lb .lb-levels { grid-template-columns: minmax(0, 1fr); gap: 10px; }
  .lb .lb-level { padding: 12px 12px 12px 16px; }
  .lb .lb-pill { min-height: 44px; }
  .lb .lb-catalog { gap: 18px; }
  .lb .lb-grid, .lb .lb-grid--related { grid-template-columns: minmax(0, 1fr); }
  .lb .lb-listing--results { padding: 16px 0 56px; }
  .lb .lb-bridge-actions .gf-btn { width: 100%; }
  .lb .lb-final-actions { flex-direction: column; align-self: stretch; }
  .lb .lb-final-actions .gf-btn { width: 100%; }
  .lb .lb-hero--activity { padding: 16px 0 40px; }
  .lb .lb-activity { gap: 48px; padding: 4px 0 56px; }
  .lb .lb-actions .gf-btn, .lb .lb-actions form, .lb .lb-band .gf-btn, .lb .lb-band form, .lb .lb-band-actions { width: 100%; }
  .lb .lb-band { padding: 22px; }
  .lb .lb-band--dark { padding: 26px 22px; border-radius: 20px; }
  .lb .lb-band-link { margin-inline: auto; }
  .lb .lb-preview-wrap { margin-inline: -8px; border-radius: 16px; }
  .lb .lb-preview-stage { padding: 14px 10px 16px; }
}
@media (max-width: 560px) {
  /* Celular: a listagem completa vira lista (miniatura + texto) — com ~20
     atividades, cards inteiros um embaixo do outro dobravam a página. */
  .lb .lb-grid:not(.lb-grid--related) { gap: 12px; }
  .lb .lb-grid:not(.lb-grid--related) .lb-card { flex-direction: row; align-items: flex-start; gap: 12px; padding: 10px 14px 10px 10px; border-radius: 16px; }
  .lb .lb-grid:not(.lb-grid--related) .lb-card-media { flex: none; width: 96px; border-bottom: 0; border-radius: 11px; }
  .lb .lb-grid:not(.lb-grid--related) .lb-card-cover { height: 96px; aspect-ratio: 1; }
  .lb .lb-grid:not(.lb-grid--related) .lb-card-body { gap: 6px; padding: 0; }
  .lb .lb-grid:not(.lb-grid--related) .lb-card-title { font-size: 16px; }
  .lb .lb-grid:not(.lb-grid--related) .lb-card-text { font-size: 14px; line-height: 1.45; }
  .lb .lb-grid:not(.lb-grid--related) .lb-card-foot { padding-top: 0; border-top: 0; }
  .lb .lb-grid:not(.lb-grid--related) .lb-badge { font-size: 12.5px; padding: 2px 9px; }
}
/* Fileiras que rolam na horizontal: em tela de toque, sem barra (o card
   cortado na borda já mostra que há mais); com mouse, barra fina. */
.lb :where(.lb-row, .lb-tabs) { scrollbar-width: thin; scrollbar-color: var(--gf-gray-300) transparent; }
@media (hover: none) {
  .lb :where(.lb-row, .lb-tabs) { scrollbar-width: none; }
  .lb :where(.lb-row, .lb-tabs)::-webkit-scrollbar { display: none; }
}
@media (max-width: 420px) {
  /* Espaço curto: o CTA de sessão fica só no menu (gf-menu-auth). */
  .lb .gf-nav-actions > .lb-nav-signup { display: none; }
}

/* ── Movimento ────────────────────────────────────────────────────── */
@media (prefers-reduced-motion: no-preference) {
  .lb .lb-fan-item { animation: gf-rise .7s cubic-bezier(.2, .7, .2, 1) both; }
  .lb .lb-fan-item--1 { animation-delay: .1s; }
  .lb .lb-fan-item--2 { animation-delay: .22s; }
  .lb .lb-fan-item--3 { animation-delay: .34s; }
  .lb .lb-fan-band { animation: gf-stack-band-in 1s var(--gf-ease) .15s both; }
  .lb .lb-fan-band--yellow { animation-delay: .45s; }
  .lb .lb-fan-ticks path { animation: gf-draw .5s ease-out 1.1s both; }
}
@media (prefers-reduced-motion: reduce) {
  .lb [class*="lb-"], .lb [class*="lb-"]::before, .lb [class*="lb-"]::after,
  .lb [class*="gf-"], .lb [class*="gf-"]::before, .lb [class*="gf-"]::after { transition: none !important; animation: none !important; }
}