:root {
  --bg: #ffffff;
  --bg2: #f2f2f2;
  --bg3: #e5e5e5;
  --fg: #0f0f0f;
  --fg2: #606060;
  --borda: #e0e0e0;
  --acento: #e5322d;
  --foco: #065fd4;
  --sombra: rgba(0, 0, 0, .08);
  color-scheme: light;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-tema="claro"]) {
    --bg: #0f0f0f;
    --bg2: #212121;
    --bg3: #303030;
    --fg: #f1f1f1;
    --fg2: #aaaaaa;
    --borda: #303030;
    --foco: #3ea6ff;
    --sombra: rgba(0, 0, 0, .4);
    color-scheme: dark;
  }
}

:root[data-tema="escuro"] {
  --bg: #0f0f0f;
  --bg2: #212121;
  --bg3: #303030;
  --fg: #f1f1f1;
  --fg2: #aaaaaa;
  --borda: #303030;
  --foco: #3ea6ff;
  --sombra: rgba(0, 0, 0, .4);
  color-scheme: dark;
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font: 14px/1.4 Roboto, "Segoe UI", system-ui, -apple-system, Helvetica, Arial, sans-serif;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; }
svg { width: 24px; height: 24px; fill: currentColor; flex: none; }
:focus-visible { outline: 2px solid var(--foco); outline-offset: 2px; }
code { background: var(--bg2); padding: 1px 5px; border-radius: 4px; }

/* ---------- topo ---------- */

.topo {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 8px 24px;
  background: var(--bg);
  border-bottom: 1px solid var(--borda);
}

.logo {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 19px;
  font-weight: 700;
  letter-spacing: -.3px;
  white-space: nowrap;
}
.logo svg { width: 30px; height: 30px; }

.busca {
  flex: 1;
  max-width: 600px;
  margin: 0 auto;
  display: flex;
}
.busca input {
  flex: 1;
  min-width: 0;
  height: 40px;
  padding: 0 16px;
  border: 1px solid var(--borda);
  border-right: 0;
  border-radius: 20px 0 0 20px;
  background: var(--bg);
  color: var(--fg);
  font: inherit;
  font-size: 16px;
}
.busca input:focus { outline: none; border-color: var(--foco); }
.busca button {
  width: 60px;
  height: 40px;
  border: 1px solid var(--borda);
  border-radius: 0 20px 20px 0;
  background: var(--bg2);
  cursor: pointer;
  display: grid;
  place-items: center;
}

.menu { display: flex; align-items: center; gap: 4px; }
.menu a, .icone {
  display: flex;
  align-items: center;
  gap: 6px;
  height: 40px;
  padding: 0 12px;
  border: 0;
  border-radius: 20px;
  background: none;
  cursor: pointer;
  white-space: nowrap;
}
.icone { width: 40px; padding: 0; justify-content: center; }
.menu a:hover, .icone:hover, .menu a[aria-current] { background: var(--bg2); }
.menu a[aria-current] { font-weight: 600; }

/* ---------- conteúdo ---------- */

main {
  flex: 1;
  width: 100%;
  max-width: 2200px;
  margin: 0 auto;
  padding: 16px 24px 40px;
}

.aviso { color: var(--fg2); text-align: center; padding: 48px 16px; font-size: 15px; }
.meta { color: var(--fg2); }

h1.pagina { font-size: 22px; margin: 8px 0 20px; }
h1.pagina .meta { font-weight: 400; font-size: 16px; margin-left: 6px; }
h2.secao { font-size: 18px; margin: 28px 0 14px; }

.titulo-acoes { display: flex; align-items: center; justify-content: space-between; gap: 12px; flex-wrap: wrap; }
.titulo-acoes h1.pagina { margin-bottom: 20px; }

.botao {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  height: 36px;
  padding: 0 14px;
  border: 0;
  border-radius: 18px;
  background: var(--bg2);
  font-weight: 500;
  cursor: pointer;
  white-space: nowrap;
}
.botao:hover { background: var(--bg3); }
.botao svg { width: 20px; height: 20px; }

/* chips (categorias e ordenação) */
.chips {
  display: flex;
  gap: 10px;
  overflow-x: auto;
  padding: 4px 0 16px;
  scrollbar-width: none;
}
.chips::-webkit-scrollbar { display: none; }
.chip {
  padding: 6px 12px;
  border-radius: 8px;
  background: var(--bg2);
  font-weight: 500;
  white-space: nowrap;
}
.chip:hover { background: var(--bg3); }
.chip.ativo { background: var(--fg); color: var(--bg); }

/* ---------- grade de vídeos ---------- */

.grade {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(min(100%, 300px), 1fr));
  gap: 32px 16px;
}

.card { position: relative; min-width: 0; }

.thumb {
  position: relative;
  display: block;
  aspect-ratio: 16 / 9;
  border-radius: 12px;
  overflow: hidden;
  background: var(--bg2);
}
.thumb img { width: 100%; height: 100%; object-fit: cover; display: block; }
.dur, .selo {
  position: absolute;
  padding: 1px 5px;
  border-radius: 4px;
  background: rgba(0, 0, 0, .8);
  color: #fff;
  font-size: 12px;
  font-weight: 500;
}
.dur { right: 8px; bottom: 8px; }
.selo { left: 8px; bottom: 8px; }
.card.visto .thumb img { opacity: .5; }
.card.visto .thumb::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 4px;
  background: var(--acento);
}

.card .depois {
  position: absolute;
  top: 8px;
  right: 8px;
  width: 36px;
  height: 36px;
  border: 0;
  border-radius: 50%;
  background: rgba(0, 0, 0, .75);
  color: #fff;
  display: grid;
  place-items: center;
  cursor: pointer;
  opacity: 0;
  transition: opacity .15s;
}
.card .depois svg { width: 20px; height: 20px; }
.card:hover .depois, .card .depois:focus-visible, .card .depois.ativo { opacity: 1; }
@media (hover: none) { .card .depois { opacity: .9; } }

.info { display: flex; gap: 12px; padding-top: 12px; }
.textos { min-width: 0; display: flex; flex-direction: column; gap: 2px; }
.titulo {
  font-size: 16px;
  font-weight: 600;
  line-height: 1.375;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  overflow-wrap: anywhere;
}
.canal, .info .meta { color: var(--fg2); font-size: 14px; }
.canal:hover { color: var(--fg); }

.avatar {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  object-fit: cover;
  flex: none;
  background: var(--bg3);
}
.avatar.letra { display: grid; place-items: center; font-weight: 600; color: var(--fg2); }
.avatar.grande { width: 72px; height: 72px; font-size: 28px; }

/* ---------- página do vídeo ---------- */

.assistir { max-width: 1280px; margin: 0 auto; }
.player {
  aspect-ratio: 16 / 9;
  border-radius: 12px;
  overflow: hidden;
  background: #000;
}
.player iframe { width: 100%; height: 100%; border: 0; display: block; }
.titulo-video { font-size: 20px; margin: 14px 0 10px; overflow-wrap: anywhere; }
.barra-video { display: flex; align-items: center; flex-wrap: wrap; gap: 8px 16px; }
.canal-mini { display: flex; align-items: center; gap: 10px; font-weight: 600; font-size: 16px; }
.barra-video .acoes { display: flex; gap: 8px; margin-left: auto; flex-wrap: wrap; }
.botao.depois.ativo { background: var(--fg); color: var(--bg); }

/* ---------- canais ---------- */

.cabecalho-canal { display: flex; align-items: center; gap: 20px; margin: 8px 0 20px; }
.cabecalho-canal h1 { margin: 0 0 4px; font-size: 28px; }
.cabecalho-canal p { margin: 0 0 10px; }
.cabecalho-canal .avatar.grande { width: 96px; height: 96px; font-size: 40px; }

.lista-canais {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(min(100%, 180px), 1fr));
  gap: 12px;
}
.canal-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  padding: 20px 12px;
  border-radius: 12px;
  background: var(--bg2);
  text-align: center;
}
.canal-card:hover { background: var(--bg3); }
.canal-card .nome { font-weight: 600; font-size: 15px; overflow-wrap: anywhere; }
.canal-card .meta { font-size: 13px; }

footer { padding: 16px 24px 24px; color: var(--fg2); font-size: 13px; text-align: center; }

/* ---------- telas pequenas ---------- */

@media (max-width: 900px) {
  .menu a span { display: none; }
  .menu a { width: 40px; padding: 0; justify-content: center; }
}

@media (max-width: 640px) {
  .topo { flex-wrap: wrap; gap: 8px; padding: 8px 16px; }
  .logo { flex: 1; }
  .busca { order: 3; flex-basis: 100%; max-width: none; }
  main { padding: 12px 16px 32px; }
  footer { padding: 16px; }
  .grade { gap: 24px; }
  .barra-video .acoes { margin-left: 0; }
  .cabecalho-canal { gap: 14px; }
  .cabecalho-canal .avatar.grande { width: 64px; height: 64px; font-size: 26px; }
  .cabecalho-canal h1 { font-size: 22px; }
}