/* ==========================================================================
   No Ar — visual de receptor de rádio noturno
   Fundo preto com painéis cinza, dial verde-fósforo (como o "olho mágico"
   das válvulas), indicador vermelho NO AR
   ========================================================================== */

:root {
  --chassi: #0a0a0a;
  --painel: #161616;
  --painel-alto: #1f1f1f;
  --linha: #333333;
  --verde: #43d17c;
  --verde-claro: #8af0b4;
  --creme: #ededed;
  --apagado: #969696;
  --no-ar: #ff4b4b;
  --fonte-display: "Big Shoulders Display", sans-serif;
  --fonte-texto: "Archivo", sans-serif;
  --fonte-mono: "IBM Plex Mono", monospace;
  --altura-deck: 84px;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

html { color-scheme: dark; }

body {
  font-family: var(--fonte-texto);
  background:
    radial-gradient(1100px 420px at 50% -140px, rgba(67, 209, 124, 0.14), transparent 70%),
    var(--chassi);
  color: var(--creme);
  min-height: 100vh;
  padding-bottom: calc(var(--altura-deck) + 24px);
}

button { font: inherit; color: inherit; }

:focus-visible {
  outline: 2px solid var(--verde-claro);
  outline-offset: 3px;
  border-radius: 4px;
}

.rotulo-oculto {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip-path: inset(50%);
}

/* --------------------------------------------------------------------------
   Cabeçalho e marca
   -------------------------------------------------------------------------- */

.topo {
  max-width: 1100px;
  margin: 0 auto;
  padding: 48px 24px 12px;
}

.marca {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: baseline;
  column-gap: 16px;
}

.marca-sinal {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--no-ar);
  box-shadow: 0 0 14px rgba(255, 75, 75, 0.8);
  align-self: center;
  animation: pulsar 2.4s ease-in-out infinite;
}

.marca-titulo {
  font-family: var(--fonte-display);
  font-weight: 800;
  font-size: clamp(3rem, 8vw, 5rem);
  line-height: 0.9;
  letter-spacing: 0.02em;
  text-transform: uppercase;
  color: var(--creme);
}

.marca-sub {
  grid-column: 1 / -1;
  margin-top: 10px;
  color: var(--apagado);
  font-size: 0.95rem;
}

@keyframes pulsar {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.35; }
}

.atualizar {
  align-self: center;
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 9px 16px;
  border: 1px solid var(--linha);
  border-radius: 999px;
  background: linear-gradient(180deg, var(--painel-alto), var(--painel));
  color: var(--verde);
  font-size: 0.85rem;
  font-weight: 500;
  cursor: pointer;
  transition: border-color 0.25s ease, box-shadow 0.25s ease;
}

.atualizar:hover {
  border-color: var(--verde);
  box-shadow: 0 0 14px rgba(67, 209, 124, 0.25);
}

.atualizar svg { width: 17px; height: 17px; fill: currentColor; }

/* --------------------------------------------------------------------------
   Dial de sintonia (assinatura da página)
   -------------------------------------------------------------------------- */

.dial {
  position: relative;
  margin-top: 28px;
  height: 64px;
  border: 1px solid var(--linha);
  border-radius: 10px;
  background: linear-gradient(180deg, var(--painel-alto), var(--painel));
  box-shadow: inset 0 0 34px rgba(67, 209, 124, 0.10);
  overflow: hidden;
}

.dial-ticks {
  position: absolute;
  inset: 8px 16px auto;
  height: 18px;
  background: repeating-linear-gradient(
    90deg,
    rgba(67, 209, 124, 0.55) 0 1px,
    transparent 1px 12px
  );
  mask-image: linear-gradient(90deg, transparent, #000 6%, #000 94%, transparent);
}

.dial-numeros {
  position: absolute;
  inset: auto 16px 8px;
  display: flex;
  justify-content: space-between;
  font-family: var(--fonte-mono);
  font-size: 0.8rem;
  color: var(--verde);
  text-shadow: 0 0 10px rgba(67, 209, 124, 0.55);
}

.dial-agulha {
  position: absolute;
  top: 0;
  bottom: 0;
  left: 4%;
  width: 2px;
  background: var(--verde-claro);
  box-shadow: 0 0 12px 2px rgba(138, 240, 180, 0.75);
  opacity: 0;
  transition: left 0.7s cubic-bezier(0.22, 1, 0.36, 1), opacity 0.3s ease;
}

.dial-agulha.visivel { opacity: 1; }

/* --------------------------------------------------------------------------
   Grade de estações
   -------------------------------------------------------------------------- */

.conteudo {
  max-width: 1100px;
  margin: 0 auto;
  padding: 28px 24px 0;
}

.grade {
  list-style: none;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
  gap: 16px;
}

.aviso-vazio {
  color: var(--apagado);
  padding: 48px 0;
  text-align: center;
}

.cartao {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 14px;
  width: 100%;
  height: 100%;
  min-height: 210px;
  text-align: left;
  padding: 20px;
  border: 1px solid var(--linha);
  border-radius: 12px;
  background: linear-gradient(180deg, var(--painel-alto), var(--painel));
  cursor: pointer;
  transition: border-color 0.25s ease, transform 0.25s ease;
}

.cartao:hover { border-color: var(--verde); transform: translateY(-2px); }

.cartao-topo {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 8px;
}

.cartao-freq {
  font-family: var(--fonte-mono);
  font-size: 0.85rem;
  color: var(--verde);
  text-shadow: 0 0 10px rgba(67, 209, 124, 0.45);
  white-space: nowrap;
}

.cartao-badge {
  font-family: var(--fonte-mono);
  font-size: 0.68rem;
  letter-spacing: 0.14em;
  color: var(--no-ar);
  border: 1px solid currentColor;
  border-radius: 999px;
  padding: 3px 9px;
  opacity: 0;
  transition: opacity 0.25s ease;
}

.cartao-nome {
  font-family: var(--fonte-display);
  font-weight: 600;
  font-size: 1.9rem;
  line-height: 1;
  text-transform: uppercase;
  letter-spacing: 0.02em;
}

.cartao-detalhe { color: var(--apagado); font-size: 0.88rem; line-height: 1.5; }

.cartao-acao {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-top: auto;
  color: var(--verde);
  font-size: 0.85rem;
  font-weight: 500;
}

.cartao-acao svg { width: 26px; height: 26px; fill: currentColor; flex-shrink: 0; }

/* Estação sintonizada */

.cartao .icone-cartao-pausa { display: none; }
.cartao.tocando { border-color: var(--no-ar); }
.cartao.tocando .cartao-badge { opacity: 1; }
.cartao.tocando .cartao-acao { color: var(--no-ar); }
.cartao.tocando .icone-cartao-play { display: none; }
.cartao.tocando .icone-cartao-pausa { display: block; }

/* --------------------------------------------------------------------------
   Deck do player (rodapé fixo)
   -------------------------------------------------------------------------- */

.deck {
  position: fixed;
  inset: auto 0 0;
  z-index: 10;
  min-height: var(--altura-deck);
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 12px clamp(16px, 4vw, 40px);
  background: rgba(10, 10, 10, 0.92);
  backdrop-filter: blur(10px);
  border-top: 1px solid var(--linha);
}

.deck-play {
  width: 52px;
  height: 52px;
  flex-shrink: 0;
  border: 1px solid var(--verde);
  border-radius: 50%;
  background: transparent;
  cursor: pointer;
  display: grid;
  place-items: center;
  transition: background 0.25s ease, box-shadow 0.25s ease;
}

.deck-play:not(:disabled):hover {
  background: rgba(67, 209, 124, 0.15);
  box-shadow: 0 0 18px rgba(67, 209, 124, 0.35);
}

.deck-play:disabled { opacity: 0.35; cursor: default; }

.deck-play svg { width: 24px; height: 24px; fill: var(--verde-claro); }

.deck .icone-pausa { display: none; }
.deck[data-estado="tocando"] .icone-pausa { display: block; }
.deck[data-estado="tocando"] .icone-play { display: none; }

.deck-info { min-width: 0; flex: 1; }

.deck-nome {
  font-family: var(--fonte-display);
  font-weight: 600;
  font-size: 1.4rem;
  text-transform: uppercase;
  letter-spacing: 0.02em;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.deck-status {
  font-family: var(--fonte-mono);
  font-size: 0.75rem;
  color: var(--apagado);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.deck[data-estado="tocando"] .deck-status { color: var(--verde); }
.deck[data-estado="erro"] .deck-status { color: var(--no-ar); }

/* Equalizador */

.deck-eq {
  display: flex;
  align-items: flex-end;
  gap: 3px;
  height: 30px;
  flex-shrink: 0;
}

.deck-eq span {
  width: 4px;
  height: 20%;
  border-radius: 2px;
  background: var(--verde);
  box-shadow: 0 0 8px rgba(67, 209, 124, 0.5);
  transition: height 0.4s ease;
}

.deck[data-estado="tocando"] .deck-eq span { animation: equalizar 1s ease-in-out infinite alternate; }
.deck[data-estado="tocando"] .deck-eq span:nth-child(1) { animation-delay: 0s; }
.deck[data-estado="tocando"] .deck-eq span:nth-child(2) { animation-delay: -0.35s; }
.deck[data-estado="tocando"] .deck-eq span:nth-child(3) { animation-delay: -0.6s; }
.deck[data-estado="tocando"] .deck-eq span:nth-child(4) { animation-delay: -0.2s; }
.deck[data-estado="tocando"] .deck-eq span:nth-child(5) { animation-delay: -0.5s; }

@keyframes equalizar {
  from { height: 15%; }
  to { height: 100%; }
}

/* Volume */

.deck-volume {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}

.deck-volume svg { width: 20px; height: 20px; fill: var(--apagado); }

.deck-volume input {
  width: 110px;
  accent-color: var(--verde);
  cursor: pointer;
}

/* --------------------------------------------------------------------------
   Responsivo
   -------------------------------------------------------------------------- */

@media (max-width: 720px) {
  .topo { padding-top: 32px; }
  .grade { grid-template-columns: repeat(auto-fill, minmax(210px, 1fr)); }
  .deck-eq { display: none; }
  .deck-volume input { width: 80px; }
}

@media (max-width: 480px) {
  .atualizar { padding: 9px 11px; }
  .atualizar-texto { display: none; }
  .grade { grid-template-columns: 1fr; gap: 12px; }
  .cartao { padding: 16px; gap: 10px; min-height: 170px; }
  .cartao-detalhe { font-size: 0.82rem; }
  .deck { gap: 10px; }
  .deck-volume { display: none; }
  .deck-nome { font-size: 1.15rem; }
}

/* Movimento reduzido: sem animações, agulha muda de posição sem deslizar */

@media (prefers-reduced-motion: reduce) {
  .marca-sinal { animation: none; }
  .dial-agulha { transition: opacity 0.3s ease; }
  .cartao, .cartao:hover { transform: none; }
  .deck[data-estado="tocando"] .deck-eq span { animation: none; height: 60%; }
}