/* =============================================================================
   Estudo · Comunidade Manifesto
   Sistema visual derivado da linguagem do Notion: canvas off-white quente,
   superfícies brancas separadas por fios de 1px (nunca sombras), tipografia
   Inter com tracking negativo nos tamanhos grandes, um único azul estrutural
   e uma paleta de acentos que só decora — nunca pinta uma ação.
   ========================================================================== */

/* ---------- 1. Tokens ---------------------------------------------------- */

:root {
  color-scheme: light;

  /* Superfícies */
  --canvas:      #f6f5f4;
  --canvas-sunk: #efeeec;
  --surface:     #ffffff;
  --hairline:    rgba(0, 0, 0, 0.09);
  --hairline-firm: rgba(0, 0, 0, 0.16);
  --hover:       rgba(0, 0, 0, 0.035);

  /* Tinta — a hierarquia vem do alfa, não de novas cores */
  --ink:       rgba(0, 0, 0, 0.95);
  --ink-2:     #31302e;
  --ink-muted: #615d59;
  --ink-faint: #a39e98;

  /* O único acento estrutural */
  --blue:        #0075de;
  --blue-press:  #005bab;
  --blue-tint:   #e6f3fe;
  --on-blue:     #ffffff;

  /* Paleta decorativa — capítulos, ilustração. Nunca em botões. */
  --sticker-1: #ffb110;
  --sticker-2: #f64932;
  --sticker-3: #62aef0;
  --sticker-4: #2a9d99;
  --sticker-5: #d6b6f6;
  --sticker-6: #dd5b00;

  --font-ui: 'Inter', ui-sans-serif, system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;
  --font-serif: 'Newsreader', 'Iowan Old Style', Georgia, serif;

  /* Escala tipográfica (px do sistema, fluidificada onde precisa) */
  --t-caption: 0.75rem;   /* 12 */
  --t-sm:      0.875rem;  /* 14 */
  --t-base:    1rem;      /* 16 */
  --t-title:   1.25rem;   /* 20 */
  --t-h3:      1.375rem;  /* 22 */
  --t-h2:      clamp(1.5rem, 1.28rem + 0.95vw, 1.875rem);
  --t-h1:      clamp(1.85rem, 1.45rem + 1.8vw, 2.75rem);
  --t-display: clamp(2.1rem, 1.45rem + 3.1vw, 4rem);

  /* Espaço — base 4px */
  --s-1: 0.25rem; --s-2: 0.5rem;  --s-3: 0.75rem; --s-4: 1rem;
  --s-5: 1.25rem; --s-6: 1.5rem;  --s-7: 1.75rem; --s-8: 2rem;
  --s-10: 2.5rem; --s-12: 3rem;   --s-16: 4rem;   --s-20: 5rem;

  --r-xs: 4px; --r-sm: 6px; --r-md: 8px; --r-lg: 12px; --r-xl: 16px; --r-full: 9999px;

  --gut: clamp(1rem, 0.45rem + 2.4vw, 2.5rem);
  --page: 75rem;

  --ease: cubic-bezier(0.2, 0, 0.15, 1);
  --spring: cubic-bezier(0.34, 1.3, 0.64, 1);
  --dur: 200ms;

  /* Elevação: muitas camadas quase transparentes, nunca uma sombra dura */
  --lift-1: 0 0.2px 1px rgba(0,0,0,0.012), 0 0.8px 2.9px rgba(0,0,0,0.02),
            0 2px 7.8px rgba(0,0,0,0.027), 0 4px 18px rgba(0,0,0,0.04);
  --lift-2: 0 1px 2px rgba(0,0,0,0.03), 0 6px 16px rgba(0,0,0,0.05),
            0 23px 52px rgba(0,0,0,0.05);

  --z-head: 30;
  --z-tip: 60;
}

:root[data-theme='dark'] {
  color-scheme: dark;

  --canvas:      #191919;
  --canvas-sunk: #141414;
  --surface:     #232323;
  --hairline:    rgba(255, 255, 255, 0.11);
  --hairline-firm: rgba(255, 255, 255, 0.22);
  --hover:       rgba(255, 255, 255, 0.055);

  --ink:       rgba(255, 255, 255, 0.92);
  --ink-2:     #d6d3ce;
  --ink-muted: #9b958d;
  --ink-faint: #6f6960;

  --blue:       #4a9eeb;
  --blue-press: #6cb3f2;
  --blue-tint:  rgba(74, 158, 235, 0.16);
  --on-blue:    #10161d;

  --lift-1: 0 1px 2px rgba(0,0,0,0.3), 0 4px 14px rgba(0,0,0,0.28);
  --lift-2: 0 2px 6px rgba(0,0,0,0.4), 0 18px 44px rgba(0,0,0,0.42);
}

/* ---------- 2. Base ------------------------------------------------------ */

*, *::before, *::after { box-sizing: border-box; }
[hidden] { display: none !important; }

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: 5.5rem;
}

body {
  margin: 0;
  background: var(--canvas);
  color: var(--ink);
  font-family: var(--font-ui);
  font-size: var(--t-base);
  line-height: 1.5;
  font-feature-settings: 'lnum' 1;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

h1, h2, h3, h4 { margin: 0; font-weight: 700; line-height: 1.15; text-wrap: balance; }
p { margin: 0; text-wrap: pretty; }
ul, ol { margin: 0; padding: 0; list-style: none; }
img { display: block; max-width: 100%; height: auto; }
svg { display: block; }
button, input { font: inherit; color: inherit; }

button {
  background: none;
  border: 0;
  padding: 0;
  cursor: pointer;
  text-align: inherit;
  color: inherit;
}

a { color: inherit; }

:focus-visible {
  outline: 2px solid var(--blue);
  outline-offset: 2px;
  border-radius: var(--r-xs);
}

::selection { background: var(--blue-tint); color: var(--ink); }

/* ---------- 3. Utilitários ---------------------------------------------- */

.wrap { width: min(100% - var(--gut) * 2, var(--page)); margin-inline: auto; }

.eyebrow {
  font-size: var(--t-caption);
  font-weight: 600;
  letter-spacing: 0.01em;
  color: var(--ink-muted);
}

.sr-only {
  position: absolute;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden;
  clip-path: inset(50%);
  white-space: nowrap;
}

.num { font-variant-numeric: tabular-nums; }

[data-reveal] {
  opacity: 0;
  transform: translateY(10px);
  transition: opacity 560ms var(--ease), transform 560ms var(--ease);
  transition-delay: var(--reveal-delay, 0ms);
}
[data-reveal].is-in { opacity: 1; transform: none; }

/* Pílula de destaque — o gesto tipográfico da referência */
.pill-num {
  display: inline-grid;
  place-items: center;
  min-width: 1.9em;
  padding: 0.06em 0.42em;
  border-radius: var(--r-full);
  background: var(--sticker-1);
  color: #000;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  line-height: 1.28;
}
.pill-num[data-c='2'] { background: var(--sticker-2); color: #fff; }
.pill-num[data-c='3'] { background: var(--sticker-3); color: #000; }
.pill-num[data-c='4'] { background: var(--sticker-4); color: #fff; }
.pill-num[data-c='5'] { background: var(--sticker-5); color: #000; }
.pill-num[data-c='6'] { background: var(--sticker-6); color: #fff; }

/* ---------- 4. Cabeçalho ------------------------------------------------- */

.head {
  position: sticky;
  top: 0;
  z-index: var(--z-head);
  background: color-mix(in srgb, var(--canvas) 86%, transparent);
  backdrop-filter: blur(12px) saturate(1.4);
  -webkit-backdrop-filter: blur(12px) saturate(1.4);
  transition: box-shadow var(--dur) var(--ease);
}
.head.is-stuck { box-shadow: var(--lift-1); }

.head__in {
  display: flex;
  align-items: center;
  gap: var(--s-4);
  min-height: 3.75rem;
}

.brand {
  display: flex;
  align-items: center;
  gap: var(--s-2);
  margin-right: auto;
  text-decoration: none;
  min-width: 0;
}
.brand__logo { width: 1.6rem; height: 1.6rem; border-radius: var(--r-sm); flex: none; }
.brand__mark {
  font-size: var(--t-base);
  font-weight: 700;
  letter-spacing: -0.014em;
  white-space: nowrap;
}
.brand__sub {
  font-size: var(--t-sm);
  color: var(--ink-muted);
  white-space: nowrap;
}
@media (max-width: 46rem) { .brand__sub { display: none; } }

.nav { display: flex; gap: var(--s-1); }

.nav a {
  padding: var(--s-2) var(--s-3);
  border-radius: var(--r-md);
  font-size: var(--t-sm);
  font-weight: 500;
  color: var(--ink-muted);
  text-decoration: none;
  white-space: nowrap;
  transition: background var(--dur) var(--ease), color var(--dur) var(--ease);
}
.nav a:hover { background: var(--hover); color: var(--ink); }

@media (max-width: 30rem) {
  .nav a { padding: var(--s-2); font-size: var(--t-caption); }
}

.icon-btn {
  display: grid;
  place-items: center;
  width: 2.25rem; height: 2.25rem;
  border-radius: var(--r-md);
  color: var(--ink-muted);
  flex: none;
  transition: background var(--dur) var(--ease), color var(--dur) var(--ease);
}
.icon-btn:hover { background: var(--hover); color: var(--ink); }
.icon-btn svg { width: 1.1rem; height: 1.1rem; }
.icon-btn:disabled { opacity: 0.3; cursor: not-allowed; }
.icon-btn:disabled:hover { background: none; }

.theme-toggle .moon { display: none; }
:root[data-theme='dark'] .theme-toggle .sun { display: none; }
:root[data-theme='dark'] .theme-toggle .moon { display: block; }

/* ---------- 5. Botões ---------------------------------------------------- */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--s-2);
  min-height: 2.75rem;
  padding: 0 var(--s-5);
  border-radius: var(--r-full);
  font-size: var(--t-sm);
  font-weight: 500;
  text-decoration: none;
  white-space: nowrap;
  transition: background var(--dur) var(--ease), color var(--dur) var(--ease),
              border-color var(--dur) var(--ease), transform 120ms var(--ease);
}
.btn:active { transform: scale(0.97); }
.btn svg { width: 1.05rem; height: 1.05rem; flex: none; }

.btn--primary { background: var(--blue); color: var(--on-blue); }
.btn--primary:hover { background: var(--blue-press); }

.btn--ghost { background: var(--blue-tint); color: var(--blue); }
.btn--ghost:hover { background: color-mix(in srgb, var(--blue-tint) 70%, var(--blue) 12%); }

.btn--quiet {
  background: var(--surface);
  color: var(--ink);
  border: 1px solid var(--hairline);
}
.btn--quiet:hover { background: var(--hover); }

@media (max-width: 30rem) { .btn { width: 100%; } }

/* ---------- 6. Herói: a próxima aula ------------------------------------- */

.hero { padding: var(--s-12) 0 var(--s-10); }
@media (min-width: 62rem) { .hero { padding: var(--s-16) 0 var(--s-12); } }

.hero__grid { display: grid; gap: var(--s-8); }
@media (min-width: 64rem) {
  .hero__grid {
    grid-template-columns: minmax(0, 1.6fr) minmax(17rem, 0.8fr);
    gap: var(--s-12);
    align-items: start;
  }
}

.hero__tag {
  display: inline-flex;
  align-items: center;
  gap: var(--s-2);
  padding: var(--s-1) var(--s-3) var(--s-1) var(--s-2);
  margin-bottom: var(--s-5);
  border-radius: var(--r-full);
  background: var(--surface);
  border: 1px solid var(--hairline);
  font-size: var(--t-caption);
  font-weight: 600;
  color: var(--blue);
}
.hero__tag .dot { position: relative; width: 6px; height: 6px; border-radius: 50%; background: var(--blue); flex: none; }
.hero__tag .dot::after {
  content: '';
  position: absolute; inset: 0;
  border-radius: 50%;
  background: var(--blue);
  animation: ping 2.4s var(--ease) infinite;
}
@keyframes ping {
  0% { transform: scale(1); opacity: 0.6; }
  70%, 100% { transform: scale(3.2); opacity: 0; }
}

.hero__date {
  font-size: var(--t-title);
  font-weight: 500;
  letter-spacing: -0.012em;
  color: var(--ink-muted);
  margin-bottom: var(--s-3);
}
.hero__date b { color: var(--ink); font-weight: 600; }

.hero__title {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 0.3em;
  font-size: var(--t-display);
  font-weight: 700;
  line-height: 1.05;
  letter-spacing: -0.038em;
  margin-bottom: var(--s-5);
}
.hero__title .pill-num { font-size: 0.62em; transform: translateY(-0.08em); }
.hero__title em { font-style: normal; color: var(--ink-faint); font-weight: 600; }

.hero__resumo {
  font-family: var(--font-serif);
  font-size: 1.125rem;
  line-height: 1.56;
  color: var(--ink-2);
  max-width: 60ch;
  margin-bottom: var(--s-6);
}

.hero__topicos {
  display: flex;
  flex-wrap: wrap;
  gap: var(--s-2);
  margin-bottom: var(--s-7);
  max-width: 62ch;
}
.hero__topicos li {
  padding: var(--s-1) var(--s-3);
  border-radius: var(--r-full);
  background: var(--surface);
  border: 1px solid var(--hairline);
  font-size: var(--t-caption);
  color: var(--ink-muted);
}

.hero__actions { display: flex; flex-wrap: wrap; gap: var(--s-3); }

.hero__side { display: grid; gap: var(--s-5); }

/* Contagem regressiva */
.countdown {
  display: grid;
  gap: var(--s-3);
  padding: var(--s-5);
  border-radius: var(--r-lg);
  background: var(--surface);
  border: 1px solid var(--hairline);
}
.countdown__clock { display: flex; gap: var(--s-6); }
.countdown__n {
  display: block;
  font-size: 1.875rem;
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.035em;
  font-variant-numeric: tabular-nums;
}
.countdown__u {
  display: block;
  margin-top: var(--s-1);
  font-size: var(--t-caption);
  color: var(--ink-faint);
}
.countdown__live { font-size: var(--t-title); font-weight: 700; color: var(--blue); letter-spacing: -0.02em; }

/* Cartão do livro */
.booklet {
  border-radius: var(--r-lg);
  background: var(--surface);
  border: 1px solid var(--hairline);
  overflow: hidden;
}
.booklet__cover {
  aspect-ratio: 16 / 9;
  width: 100%;
  object-fit: cover;
  background: var(--canvas-sunk);
}
.booklet__body { padding: var(--s-5); display: grid; gap: var(--s-3); }
.booklet__title { font-size: var(--t-h3); font-weight: 700; letter-spacing: -0.015em; }
.booklet__author { font-size: var(--t-sm); color: var(--ink-muted); margin-top: -0.35rem; }
.booklet__quote {
  font-family: var(--font-serif);
  font-size: var(--t-base);
  line-height: 1.5;
  color: var(--ink-2);
  padding-left: var(--s-4);
  border-left: 2px solid var(--sticker-1);
}

.meter { display: grid; gap: var(--s-2); }
.meter__track { height: 4px; border-radius: var(--r-full); background: var(--canvas-sunk); overflow: hidden; }
.meter__fill { height: 100%; width: 0; border-radius: var(--r-full); background: var(--blue); transition: width 900ms var(--ease) 250ms; }
.meter__text { font-size: var(--t-caption); color: var(--ink-faint); }

/* ---------- 7. Programa: cabeçalho e ferramentas ------------------------- */

.programa { padding-bottom: var(--s-20); }

.section-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: var(--s-4);
  flex-wrap: wrap;
  margin-bottom: var(--s-6);
}
.section-head h2 { font-size: var(--t-h1); letter-spacing: -0.03em; }
.section-head p { font-size: var(--t-sm); color: var(--ink-muted); }

.toolbar {
  display: flex;
  flex-wrap: wrap;
  gap: var(--s-3);
  align-items: center;
  margin-bottom: var(--s-6);
}

/* Segmentado com indicador deslizante */
.seg {
  position: relative;
  display: inline-flex;
  padding: 3px;
  border-radius: var(--r-md);
  background: var(--canvas-sunk);
  flex: none;
}
.seg__pill {
  position: absolute;
  top: 3px; bottom: 3px; left: 3px;
  border-radius: var(--r-sm);
  background: var(--surface);
  box-shadow: var(--lift-1);
  transition: transform 320ms var(--spring), width 320ms var(--spring);
  pointer-events: none;
}
.seg button {
  position: relative;
  z-index: 1;
  display: inline-flex;
  align-items: center;
  gap: var(--s-2);
  min-height: 2.15rem;
  padding: 0 var(--s-4);
  border-radius: var(--r-sm);
  font-size: var(--t-sm);
  font-weight: 500;
  color: var(--ink-muted);
  transition: color var(--dur) var(--ease);
}
.seg button svg { width: 1rem; height: 1rem; }
.seg button:hover { color: var(--ink); }
.seg button[aria-selected='true'] { color: var(--ink); font-weight: 600; }

.search { position: relative; flex: 1 1 12rem; min-width: 0; max-width: 22rem; }
.search > svg {
  position: absolute;
  left: 0.7rem; top: 50%;
  transform: translateY(-50%);
  width: 1rem; height: 1rem;
  color: var(--ink-faint);
  pointer-events: none;
}
.search input {
  width: 100%;
  min-height: 2.5rem;
  padding: 0 2.25rem 0 2.2rem;
  border: 1px solid var(--hairline);
  border-radius: var(--r-md);
  background: var(--surface);
  font-size: var(--t-sm);
  transition: border-color var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
}
.search input::placeholder { color: var(--ink-faint); }
.search input::-webkit-search-cancel-button { display: none; }
.search input:focus { outline: none; border-color: var(--blue); box-shadow: 0 0 0 3px var(--blue-tint); }
.search__clear {
  position: absolute;
  right: 0.35rem; top: 50%;
  transform: translateY(-50%);
  display: none;
  place-items: center;
  width: 1.75rem; height: 1.75rem;
  border-radius: var(--r-sm);
  color: var(--ink-faint);
}
.search__clear:hover { background: var(--hover); color: var(--ink); }
.search.has-value .search__clear { display: grid; }

.chips { display: flex; flex-wrap: wrap; gap: var(--s-2); }
.chip {
  min-height: 2.1rem;
  padding: 0 var(--s-3);
  border: 1px solid var(--hairline);
  border-radius: var(--r-md);
  background: var(--surface);
  font-size: var(--t-sm);
  font-weight: 500;
  color: var(--ink-muted);
  transition: background var(--dur) var(--ease), color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}
.chip:hover { background: var(--hover); color: var(--ink); }
.chip[aria-pressed='true'] {
  background: var(--blue-tint);
  border-color: transparent;
  color: var(--blue);
  font-weight: 600;
}

@media (max-width: 40rem) {
  .toolbar { gap: var(--s-2); }
  .seg { width: 100%; }
  .seg button { flex: 1; justify-content: center; }
  .search { flex-basis: 100%; max-width: none; }
  .chips { width: 100%; overflow-x: auto; flex-wrap: nowrap; padding-bottom: 2px; scrollbar-width: none; }
  .chips::-webkit-scrollbar { display: none; }
  .chip { flex: none; }
}

/* ---------- 8. Agenda ---------------------------------------------------- */

.past-toggle {
  display: flex;
  align-items: center;
  gap: var(--s-3);
  width: 100%;
  padding: var(--s-3) var(--s-2);
  margin-bottom: var(--s-2);
  border-radius: var(--r-md);
  font-size: var(--t-sm);
  font-weight: 500;
  color: var(--ink-muted);
  transition: background var(--dur) var(--ease), color var(--dur) var(--ease);
}
.past-toggle:hover { background: var(--hover); color: var(--ink); }
.past-toggle__chev {
  display: grid; place-items: center;
  width: 1.5rem; height: 1.5rem; flex: none;
  border-radius: 50%;
  background: var(--canvas-sunk);
  transition: transform 300ms var(--spring);
}
.past-toggle__chev svg { width: 0.9rem; height: 0.9rem; }
.past-toggle[aria-expanded='true'] .past-toggle__chev { transform: rotate(180deg); }
.past-toggle__rule { flex: 1; height: 1px; background: var(--hairline); }

.month-group { margin-bottom: var(--s-8); }
.month-group__label {
  display: flex;
  align-items: baseline;
  gap: var(--s-2);
  padding: var(--s-2) var(--s-2) var(--s-3);
  font-size: var(--t-sm);
  font-weight: 600;
  letter-spacing: 0.01em;
  color: var(--ink-muted);
  text-transform: capitalize;
}
.month-group__label span { color: var(--ink-faint); font-weight: 400; }

/* Linhas no espírito de uma base de dados do Notion */
.enc { border-top: 1px solid var(--hairline); scroll-margin-top: 5.5rem; }
.month-group .enc:last-of-type { border-bottom: 1px solid var(--hairline); }

.enc__btn {
  display: grid;
  grid-template-columns: 3.25rem minmax(0, 1fr) auto;
  gap: 0 var(--s-4);
  align-items: center;
  width: 100%;
  min-height: 4rem;
  padding: var(--s-3) var(--s-2);
  border-radius: var(--r-md);
  transition: background var(--dur) var(--ease);
}
.enc__btn:hover { background: var(--hover); }

.enc__day { text-align: center; }
.enc__day b {
  display: block;
  font-size: 1.375rem;
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -0.03em;
  font-variant-numeric: tabular-nums;
}
.enc__day small { display: block; font-size: var(--t-caption); color: var(--ink-faint); }

.enc__main { min-width: 0; }
.enc__title {
  display: flex;
  align-items: baseline;
  gap: 0.45em;
  font-size: var(--t-base);
  font-weight: 600;
  letter-spacing: -0.008em;
  line-height: 1.3;
}
.enc__title .pill-num { font-size: 0.78em; flex: none; }
.enc__title span { overflow: hidden; text-overflow: ellipsis; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; }
.enc__sub {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--s-1) var(--s-3);
  margin-top: 0.2rem;
  font-size: var(--t-caption);
  color: var(--ink-faint);
}
.enc__sub .sep { opacity: 0.5; }

.enc__aside { display: flex; align-items: center; gap: var(--s-2); }

.badge {
  display: inline-flex;
  align-items: center;
  gap: var(--s-1);
  padding: 0.15rem var(--s-2);
  border-radius: var(--r-full);
  font-size: var(--t-caption);
  font-weight: 600;
  white-space: nowrap;
}
.badge svg { width: 0.8rem; height: 0.8rem; }
.badge--next  { background: var(--blue); color: var(--on-blue); }
.badge--video { background: var(--blue-tint); color: var(--blue); }

.enc__chev { color: var(--ink-faint); flex: none; transition: transform 300ms var(--spring), color var(--dur) var(--ease); }
.enc__chev svg { width: 1.1rem; height: 1.1rem; }
.enc.is-open .enc__chev { transform: rotate(180deg); color: var(--ink); }

.enc--past .enc__title { color: var(--ink-2); font-weight: 500; }
.enc--past .enc__day b { color: var(--ink-faint); }
.enc--next .enc__day b { color: var(--blue); }
.enc--tbd .enc__title { color: var(--ink-faint); font-weight: 500; }

@media (max-width: 40rem) {
  .enc__btn { grid-template-columns: 2.6rem minmax(0, 1fr) auto; gap: 0 var(--s-3); }
  .enc__day b { font-size: 1.2rem; }
  .badge--video span { display: none; }
  .badge--next { padding: 0.15rem var(--s-2); }
}

/* Acordeão fluido */
.enc__body { display: grid; grid-template-rows: 0fr; transition: grid-template-rows 340ms var(--ease); }
.enc.is-open .enc__body { grid-template-rows: 1fr; }
.enc__body > div { overflow: hidden; }

.enc__inner {
  display: grid;
  gap: var(--s-6);
  padding: var(--s-2) var(--s-2) var(--s-8) 4.5rem;
  opacity: 0;
  transform: translateY(-4px);
  transition: opacity 260ms var(--ease) 40ms, transform 260ms var(--ease) 40ms;
}
.enc.is-open .enc__inner { opacity: 1; transform: none; }
@media (min-width: 58rem) {
  .enc__inner { grid-template-columns: minmax(0, 1fr) minmax(0, 1.05fr); align-items: start; }
}
@media (max-width: 40rem) { .enc__inner { padding-left: var(--s-2); } }

.enc__resumo {
  font-family: var(--font-serif);
  font-size: 1.0625rem;
  line-height: 1.62;
  color: var(--ink-2);
  max-width: 62ch;
}
.enc__empty { font-size: var(--t-sm); color: var(--ink-faint); font-style: italic; }

.topicos { margin-top: var(--s-5); display: grid; gap: var(--s-2); }
.topicos li {
  display: grid;
  grid-template-columns: 1.35rem 1fr;
  align-items: baseline;
  font-size: var(--t-sm);
  color: var(--ink-2);
}
.topicos { counter-reset: t; }
.topicos li::before {
  content: counter(t, decimal-leading-zero);
  counter-increment: t;
  font-size: var(--t-caption);
  font-variant-numeric: tabular-nums;
  color: var(--ink-faint);
}

.enc__facts {
  display: flex;
  flex-wrap: wrap;
  gap: var(--s-3) var(--s-8);
  margin-top: var(--s-6);
  padding-top: var(--s-4);
  border-top: 1px solid var(--hairline);
}
.fact dt { font-size: var(--t-caption); color: var(--ink-faint); margin-bottom: 0.1rem; }
.fact dd { margin: 0; font-size: var(--t-sm); font-weight: 500; }

.enc__links { display: flex; flex-wrap: wrap; gap: var(--s-2); margin-top: var(--s-6); }

/* ---------- 9. Player ---------------------------------------------------- */

.player { display: grid; gap: var(--s-2); }

.player__frame {
  position: relative;
  aspect-ratio: 16 / 9;
  border-radius: var(--r-lg);
  overflow: hidden;
  background: #0d0d0d;
  border: 1px solid var(--hairline);
}
.player__frame iframe { position: absolute; inset: 0; width: 100%; height: 100%; border: 0; }

.player__poster { position: absolute; inset: 0; width: 100%; cursor: pointer; border: 0; padding: 0; }
.player__poster img {
  position: absolute; inset: 0;
  width: 100%; height: 100%;
  object-fit: cover;
  transition: transform 600ms var(--ease), filter var(--dur) var(--ease);
  filter: brightness(0.72) saturate(0.9);
}
.player__poster::after {
  content: '';
  position: absolute; inset: 0;
  background: linear-gradient(180deg, rgba(0,0,0,0.05), rgba(0,0,0,0.45));
}
.player__poster:hover img { transform: scale(1.035); filter: brightness(0.62) saturate(1); }

.player__cta {
  position: absolute;
  inset: 0;
  z-index: 1;
  display: grid;
  place-items: center;
  align-content: center;
  gap: var(--s-3);
  color: #fff;
}
.player__play {
  display: grid;
  place-items: center;
  width: 3.5rem; height: 3.5rem;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.94);
  color: #111;
  transition: transform 260ms var(--spring), background var(--dur) var(--ease);
}
.player__play svg { width: 1.15rem; height: 1.15rem; margin-left: 2px; }
.player__poster:hover .player__play { transform: scale(1.08); background: #fff; }
.player__hint { font-size: var(--t-sm); font-weight: 600; text-shadow: 0 1px 6px rgba(0,0,0,0.4); }

.player__frame.is-live .player__poster { opacity: 0; pointer-events: none; transition: opacity 260ms var(--ease); }

.player__foot {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--s-4);
  font-size: var(--t-caption);
  color: var(--ink-faint);
}
.player__foot a { color: var(--blue); text-decoration: none; font-weight: 500; }
.player__foot a:hover { text-decoration: underline; }

/* Sem gravação: mostra a foto do capítulo com uma nota */
.media { display: grid; gap: var(--s-2); }
.media__frame {
  position: relative;
  aspect-ratio: 16 / 9;
  border-radius: var(--r-lg);
  overflow: hidden;
  border: 1px solid var(--hairline);
  background: var(--canvas-sunk);
}
.media__frame img { width: 100%; height: 100%; object-fit: cover; }
.media__note { font-size: var(--t-caption); color: var(--ink-faint); }

.media--none {
  display: grid;
  place-items: center;
  align-content: center;
  gap: var(--s-2);
  aspect-ratio: 16 / 9;
  border-radius: var(--r-lg);
  border: 1px dashed var(--hairline-firm);
  padding: var(--s-5);
  text-align: center;
  color: var(--ink-faint);
}
.media--none svg { width: 1.5rem; height: 1.5rem; opacity: 0.7; }
.media--none p { font-size: var(--t-sm); max-width: 28ch; }

/* ---------- 10. Calendário: só os dias de estudo -------------------------- */

.cal__top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--s-4);
  flex-wrap: wrap;
  margin-bottom: var(--s-6);
}
.yearpick { display: inline-flex; align-items: center; gap: var(--s-1); }
.yearpick__y {
  min-width: 4rem;
  text-align: center;
  font-size: var(--t-h3);
  font-weight: 700;
  letter-spacing: -0.025em;
  font-variant-numeric: tabular-nums;
}

.legend { display: flex; flex-wrap: wrap; gap: var(--s-2) var(--s-5); font-size: var(--t-caption); color: var(--ink-muted); }
.legend span { display: inline-flex; align-items: center; gap: var(--s-2); }
.legend i { width: 10px; height: 10px; border-radius: 3px; flex: none; }
.legend .k-next   { background: var(--blue); }
.legend .k-video  { background: var(--blue-tint); box-shadow: inset 0 0 0 1px var(--blue); }
.legend .k-past   { background: var(--canvas-sunk); box-shadow: inset 0 0 0 1px var(--hairline); }
.legend .k-future { box-shadow: inset 0 0 0 1px var(--hairline-firm); }

.cal__grid {
  display: grid;
  gap: var(--s-4);
  grid-template-columns: repeat(auto-fill, minmax(15.5rem, 1fr));
  align-items: start;
}

.mon {
  padding: var(--s-4);
  border-radius: var(--r-lg);
  background: var(--surface);
  border: 1px solid var(--hairline);
}
.mon__name {
  font-size: var(--t-sm);
  font-weight: 600;
  letter-spacing: -0.005em;
  margin-bottom: var(--s-3);
}
.mon__name > span { text-transform: capitalize; }
.mon__name b { color: var(--ink-faint); font-weight: 400; margin-left: var(--s-2); }
.mon__days { display: flex; flex-wrap: wrap; gap: var(--s-2); }

/* Ficha de um dia de estudo */
.dchip {
  position: relative;
  display: grid;
  place-items: center;
  align-content: center;
  gap: 1px;
  width: 3.25rem;
  padding: var(--s-2) var(--s-1);
  border-radius: var(--r-md);
  border: 1px solid var(--hairline);
  background: var(--surface);
  transition: transform 220ms var(--spring), background var(--dur) var(--ease),
              border-color var(--dur) var(--ease), color var(--dur) var(--ease);
}
.dchip b { font-size: 1.0625rem; font-weight: 700; line-height: 1.1; letter-spacing: -0.02em; font-variant-numeric: tabular-nums; }
.dchip small { font-size: 0.6875rem; color: var(--ink-faint); }
.dchip:hover { transform: translateY(-2px); border-color: var(--hairline-firm); box-shadow: var(--lift-1); }

.dchip.is-past { background: var(--canvas-sunk); border-color: transparent; color: var(--ink-muted); }
.dchip.is-past small { color: var(--ink-faint); }

.dchip.has-video { background: var(--blue-tint); border-color: transparent; color: var(--blue); }
.dchip.has-video small { color: var(--blue); opacity: 0.8; }

.dchip.is-next { background: var(--blue); border-color: transparent; color: var(--on-blue); }
.dchip.is-next small { color: var(--on-blue); opacity: 0.85; }

.dchip.is-today::after {
  content: '';
  position: absolute;
  inset: -4px;
  border-radius: var(--r-lg);
  border: 2px solid var(--blue);
  opacity: 0.35;
}

.dchip__play {
  position: absolute;
  top: -5px; right: -5px;
  display: grid; place-items: center;
  width: 1.05rem; height: 1.05rem;
  border-radius: 50%;
  background: var(--blue);
  color: var(--on-blue);
  border: 2px solid var(--surface);
}
.dchip__play svg { width: 0.45rem; height: 0.45rem; margin-left: 1px; }

/* Dica flutuante */
.tip {
  position: fixed;
  z-index: var(--z-tip);
  max-width: 19rem;
  padding: var(--s-3);
  border-radius: var(--r-md);
  background: var(--surface);
  border: 1px solid var(--hairline);
  box-shadow: var(--lift-2);
  font-size: var(--t-caption);
  line-height: 1.45;
  pointer-events: none;
  opacity: 0;
  transform: translateY(4px);
  transition: opacity 140ms var(--ease), transform 140ms var(--ease);
}
.tip.is-on { opacity: 1; transform: none; }
.tip b { display: block; font-size: var(--t-sm); font-weight: 600; margin-bottom: 0.1rem; letter-spacing: -0.005em; }
.tip i { font-style: normal; color: var(--ink-faint); }

@media (hover: none) { .tip { display: none; } }

/* ---------- 11. Vazio e rodapé ------------------------------------------- */

.empty {
  padding: var(--s-16) var(--s-4);
  text-align: center;
  border-radius: var(--r-lg);
  background: var(--surface);
  border: 1px solid var(--hairline);
}
.empty h3 { font-size: var(--t-title); margin-bottom: var(--s-2); letter-spacing: -0.015em; }
.empty p { font-size: var(--t-sm); color: var(--ink-muted); }

.foot {
  border-top: 1px solid var(--hairline);
  background: var(--canvas-sunk);
  padding: var(--s-12) 0 var(--s-10);
}
.foot__in { display: grid; gap: var(--s-6); }
@media (min-width: 48rem) { .foot__in { grid-template-columns: minmax(0, 1.2fr) minmax(0, 1fr); gap: var(--s-12); } }

.foot__word {
  font-family: var(--font-serif);
  font-size: var(--t-h2);
  font-style: italic;
  line-height: 1.28;
  letter-spacing: -0.015em;
  color: var(--ink-2);
  max-width: 22ch;
}
.foot__meta { font-size: var(--t-sm); color: var(--ink-muted); display: grid; gap: var(--s-2); align-content: start; }
.foot__meta strong { color: var(--ink); font-weight: 600; }
.foot__meta a { color: var(--blue); text-decoration: none; }
.foot__meta a:hover { text-decoration: underline; }
.foot__credits { font-size: var(--t-caption); color: var(--ink-faint); }

/* ---------- 12. Movimento e impressão ------------------------------------ */

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  [data-reveal] { opacity: 1; transform: none; }
}

@media print {
  .head, .toolbar, .player, .media, .foot, .hero__actions { display: none !important; }
  .enc__body { grid-template-rows: 1fr !important; }
  .enc__inner { opacity: 1 !important; transform: none !important; grid-template-columns: 1fr !important; }
  body { background: #fff; }
}