:root {
  --vermelho: #d7263d;
  --vermelho-escuro: #b01e31;
  --verde: #1a936f;
  --verde-escuro: #147a5c;
  --texto: #23272f;
  --texto-suave: #6b7280;
  --fundo-card: #ffffff;
  --borda: #e5e7eb;
  --vidro-borda: rgba(255, 255, 255, 0.68);
  --vidro-brilho: inset 0 1px 0 rgba(255, 255, 255, 0.85), inset 0 -1px 0 rgba(255, 255, 255, 0.18);
  --vidro-sombra: 0 10px 30px rgba(17, 24, 39, 0.07);
  --vidro-blur: blur(18px) saturate(170%);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  color: var(--texto);
  background:
    radial-gradient(1100px 600px at 85% -10%, rgba(215, 38, 61, 0.16), transparent 60%),
    radial-gradient(1000px 520px at 0% 0%, rgba(26, 147, 111, 0.15), transparent 55%),
    radial-gradient(900px 600px at 50% 115%, rgba(215, 38, 61, 0.08), transparent 60%),
    #f4f4f1;
  display: flex;
  justify-content: center;
  padding: 40px 16px 80px;
  overflow-x: hidden;
}

body::before,
body::after {
  content: "";
  position: fixed;
  z-index: -1;
  width: 420px;
  height: 420px;
  border-radius: 50%;
  filter: blur(90px);
  opacity: 0.55;
  pointer-events: none;
}

body::before {
  top: -140px;
  right: -120px;
  background: rgba(215, 38, 61, 0.4);
}

body::after {
  bottom: -160px;
  left: -140px;
  background: rgba(26, 147, 111, 0.4);
}

.app {
  width: 100%;
  max-width: 640px;
}

.header {
  text-align: center;
  margin-bottom: 22px;
  padding: 22px 20px;
  background: linear-gradient(160deg, rgba(255, 255, 255, 0.6), rgba(255, 255, 255, 0.34));
  border: 1px solid var(--vidro-borda);
  border-radius: 24px;
  box-shadow: var(--vidro-sombra), var(--vidro-brilho);
  -webkit-backdrop-filter: var(--vidro-blur);
  backdrop-filter: var(--vidro-blur);
}

.logo {
  font-size: 44px;
  line-height: 1;
  margin-bottom: 10px;
}

h1 {
  margin: 0;
  font-size: 34px;
  letter-spacing: -0.5px;
}

.subtitle {
  margin: 8px 0 0;
  color: var(--texto-suave);
  font-size: 15px;
}

.card {
  background: linear-gradient(160deg, rgba(255, 255, 255, 0.66), rgba(255, 255, 255, 0.44));
  border: 1px solid var(--vidro-borda);
  border-radius: 22px;
  padding: 24px;
  box-shadow: var(--vidro-sombra), var(--vidro-brilho);
  -webkit-backdrop-filter: var(--vidro-blur);
  backdrop-filter: var(--vidro-blur);
}

.card h2 {
  margin: 0 0 16px;
  font-size: 18px;
  display: flex;
  align-items: baseline;
  gap: 8px;
}

.contador {
  font-size: 13px;
  font-weight: 500;
  color: var(--texto-suave);
}

#form-add {
  display: flex;
  gap: 10px;
}

input[type="text"] {
  flex: 1;
  min-width: 0;
  padding: 12px 14px;
  font-size: 15px;
  font-family: inherit;
  border: 1.5px solid rgba(255, 255, 255, 0.85);
  border-radius: 12px;
  outline: none;
  background: rgba(255, 255, 255, 0.55);
  box-shadow: inset 0 1px 2px rgba(17, 24, 39, 0.04);
  -webkit-backdrop-filter: blur(8px);
  backdrop-filter: blur(8px);
  transition: border-color 0.2s, box-shadow 0.2s, background-color 0.2s;
}

input[type="text"]:focus {
  border-color: var(--vermelho);
  background: rgba(255, 255, 255, 0.75);
  box-shadow: 0 0 0 3px rgba(215, 38, 61, 0.12);
}

.btn {
  font-family: inherit;
  font-size: 15px;
  font-weight: 600;
  border: none;
  border-radius: 12px;
  padding: 12px 18px;
  cursor: pointer;
  transition: transform 0.15s, box-shadow 0.2s, background-color 0.2s, opacity 0.2s;
}

.btn:active {
  transform: scale(0.97);
}

.btn-primary {
  color: #fff;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.3), rgba(255, 255, 255, 0) 55%),
    linear-gradient(180deg, rgba(224, 49, 73, 0.92), rgba(176, 30, 49, 0.94));
  box-shadow: 0 6px 18px rgba(215, 38, 61, 0.25), inset 0 1px 0 rgba(255, 255, 255, 0.45), inset 0 -1px 0 rgba(0, 0, 0, 0.08);
  -webkit-backdrop-filter: blur(10px) saturate(160%);
  backdrop-filter: blur(10px) saturate(160%);
}

.btn-primary:hover {
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.34), rgba(255, 255, 255, 0) 55%),
    linear-gradient(180deg, rgba(215, 38, 61, 0.96), rgba(160, 26, 44, 0.96));
}

.aviso {
  margin: 12px 0 0;
  padding: 10px 14px;
  font-size: 14px;
  color: #8a1c2b;
  background: rgba(253, 236, 239, 0.8);
  border: 1px solid rgba(247, 205, 213, 0.9);
  border-radius: 10px;
  -webkit-backdrop-filter: blur(8px);
  backdrop-filter: blur(8px);
}

.lista {
  list-style: none;
  margin: 16px 0 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.participante {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 10px 10px 10px 14px;
  background: linear-gradient(160deg, rgba(255, 255, 255, 0.55), rgba(255, 255, 255, 0.35));
  border: 1px solid rgba(255, 255, 255, 0.7);
  border-radius: 12px;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.7);
  font-size: 15px;
  -webkit-backdrop-filter: blur(10px) saturate(160%);
  backdrop-filter: blur(10px) saturate(160%);
  animation: entrar 0.2s ease-out;
}

@keyframes entrar {
  from {
    opacity: 0;
    transform: translateY(-4px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.btn-remover {
  flex: none;
  width: 30px;
  height: 30px;
  border: none;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.35);
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.6);
  color: var(--texto-suave);
  font-size: 20px;
  line-height: 1;
  cursor: pointer;
  -webkit-backdrop-filter: blur(8px);
  backdrop-filter: blur(8px);
  transition: background-color 0.2s, color 0.2s;
}

.btn-remover:hover {
  background: rgba(253, 236, 239, 0.85);
  color: var(--vermelho);
}

.vazio {
  margin: 16px 0 0;
  color: var(--texto-suave);
  font-size: 14px;
  text-align: center;
  padding: 18px 0;
  background: rgba(255, 255, 255, 0.25);
  border: 1.5px dashed rgba(17, 24, 39, 0.14);
  border-radius: 12px;
}

.regra {
  margin: 16px 0 0;
  font-size: 12.5px;
  color: var(--texto-suave);
  line-height: 1.5;
}

.acoes {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-top: 18px;
  padding: 10px;
  background: linear-gradient(160deg, rgba(255, 255, 255, 0.55), rgba(255, 255, 255, 0.32));
  border: 1px solid var(--vidro-borda);
  border-radius: 20px;
  box-shadow: var(--vidro-sombra), var(--vidro-brilho);
  -webkit-backdrop-filter: var(--vidro-blur);
  backdrop-filter: var(--vidro-blur);
}

.btn-sortear {
  padding: 16px;
  font-size: 17px;
  color: #fff;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.32), rgba(255, 255, 255, 0) 55%),
    linear-gradient(135deg, rgba(226, 52, 76, 0.92), rgba(176, 30, 49, 0.94));
  box-shadow: 0 12px 28px rgba(215, 38, 61, 0.32), inset 0 1px 0 rgba(255, 255, 255, 0.5), inset 0 -1px 0 rgba(0, 0, 0, 0.1);
  -webkit-backdrop-filter: blur(12px) saturate(170%);
  backdrop-filter: blur(12px) saturate(170%);
}

.btn-sortear:hover:not(:disabled) {
  box-shadow: 0 14px 32px rgba(215, 38, 61, 0.42), inset 0 1px 0 rgba(255, 255, 255, 0.55), inset 0 -1px 0 rgba(0, 0, 0, 0.1);
  transform: translateY(-1px);
}

.btn-sortear:disabled {
  opacity: 0.45;
  cursor: not-allowed;
  box-shadow: none;
}

.btn-ghost {
  background: rgba(255, 255, 255, 0.42);
  color: var(--texto-suave);
  border: 1.5px solid rgba(255, 255, 255, 0.75);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.8);
  -webkit-backdrop-filter: blur(10px) saturate(160%);
  backdrop-filter: blur(10px) saturate(160%);
}

.btn-ghost:hover {
  background: rgba(255, 255, 255, 0.65);
  color: var(--texto);
}

.resultado {
  margin-top: 18px;
}

.dica {
  margin: -6px 0 16px;
  font-size: 13.5px;
  color: var(--texto-suave);
  line-height: 1.5;
}

.resultado-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(170px, 1fr));
  gap: 12px;
}

.flip-card {
  position: relative;
  height: 112px;
  padding: 0;
  border: none;
  background: transparent;
  cursor: pointer;
  perspective: 900px;
  font-family: inherit;
}

.flip-inner {
  position: relative;
  width: 100%;
  height: 100%;
  transform-style: preserve-3d;
  transition: transform 0.5s cubic-bezier(0.4, 0.2, 0.2, 1);
}

.flip-card.revelado .flip-inner {
  transform: rotateY(180deg);
}

.flip-face {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 12px;
  border-radius: 14px;
  backface-visibility: hidden;
  -webkit-backface-visibility: hidden;
}

.flip-front {
  background: linear-gradient(160deg, rgba(255, 255, 255, 0.82), rgba(255, 255, 255, 0.62));
  border: 1.5px solid rgba(255, 255, 255, 0.9);
  box-shadow: 0 6px 18px rgba(17, 24, 39, 0.08), inset 0 1px 0 rgba(255, 255, 255, 0.9);
}

.flip-back {
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.18), rgba(255, 255, 255, 0) 50%),
    linear-gradient(135deg, var(--verde), var(--verde-escuro));
  color: #fff;
  transform: rotateY(180deg);
  box-shadow: 0 8px 22px rgba(26, 147, 111, 0.32), inset 0 1px 0 rgba(255, 255, 255, 0.35);
}

.card-nome {
  font-size: 16.5px;
  font-weight: 700;
  overflow-wrap: anywhere;
  line-height: 1.25;
}

.flip-back .card-nome {
  font-size: 19px;
}

.card-dica {
  font-size: 11.5px;
  color: var(--texto-suave);
  text-transform: uppercase;
  letter-spacing: 0.6px;
}

.flip-back .card-dica {
  color: rgba(255, 255, 255, 0.75);
}

.flip-card:focus-visible {
  outline: 3px solid rgba(215, 38, 61, 0.4);
  outline-offset: 2px;
  border-radius: 14px;
}

.resultado-item {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.btn-link {
  font-family: inherit;
  font-size: 12.5px;
  font-weight: 600;
  color: var(--verde-escuro);
  background: linear-gradient(180deg, rgba(26, 147, 111, 0.18), rgba(26, 147, 111, 0.1));
  border: 1px solid rgba(26, 147, 111, 0.28);
  border-radius: 9px;
  padding: 7px 10px;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.55);
  cursor: pointer;
  -webkit-backdrop-filter: blur(8px) saturate(160%);
  backdrop-filter: blur(8px) saturate(160%);
  transition: background-color 0.2s, transform 0.15s;
}

.btn-link:hover {
  background: linear-gradient(180deg, rgba(26, 147, 111, 0.26), rgba(26, 147, 111, 0.16));
}

.btn-link:active {
  transform: scale(0.97);
}

.revelacao {
  max-width: 460px;
}

.revelacao-card {
  text-align: center;
}

.flip-card-grande {
  width: 100%;
  height: 200px;
}

.flip-card-grande .card-nome {
  font-size: 22px;
}

.flip-card-grande .flip-back .card-nome {
  font-size: 26px;
}

.revelacao-dica {
  margin: 14px 0 0;
  text-align: center;
}

.toast {
  position: fixed;
  left: 50%;
  bottom: 24px;
  transform: translate(-50%, 16px);
  max-width: calc(100vw - 32px);
  padding: 11px 18px;
  font-size: 14px;
  font-weight: 600;
  color: #fff;
  background: rgba(35, 39, 47, 0.78);
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 12px;
  box-shadow: 0 12px 34px rgba(17, 24, 39, 0.3), inset 0 1px 0 rgba(255, 255, 255, 0.16);
  -webkit-backdrop-filter: blur(16px) saturate(160%);
  backdrop-filter: blur(16px) saturate(160%);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.25s, transform 0.25s;
  z-index: 10;
}

.toast.visivel {
  opacity: 1;
  transform: translate(-50%, 0);
}

@supports not ((backdrop-filter: blur(1px)) or (-webkit-backdrop-filter: blur(1px))) {
  body {
    background: #f4f4f1;
  }

  body::before,
  body::after {
    display: none;
  }

  .header,
  .card,
  .acoes {
    background: rgba(255, 255, 255, 0.94);
  }

  .btn-primary,
  .btn-sortear {
    background: var(--vermelho);
  }

  .btn-sortear {
    background: linear-gradient(135deg, var(--vermelho), var(--vermelho-escuro));
  }

  .btn-ghost {
    background: #fff;
  }

  .btn-link {
    background: #e9f6f1;
  }

  .toast {
    background: var(--texto);
  }
}

@media (prefers-reduced-transparency: reduce) {
  body {
    background: #f4f4f1;
  }

  body::before,
  body::after {
    display: none;
  }

  .header,
  .card,
  .acoes,
  .participante,
  .flip-front {
    background: #fff;
  }

  .btn-primary,
  .btn-sortear {
    background: linear-gradient(135deg, var(--vermelho), var(--vermelho-escuro));
  }

  .btn-ghost {
    background: #fff;
  }

  .btn-link {
    background: #e9f6f1;
  }

  .toast {
    background: var(--texto);
  }
}

@media (max-width: 480px) {
  body {
    padding: 24px 12px 60px;
  }

  h1 {
    font-size: 28px;
  }

  .card {
    padding: 18px;
  }

  #form-add {
    flex-direction: column;
  }

  .btn {
    min-height: 44px;
  }

  .btn-remover {
    width: 44px;
    height: 44px;
  }

  .btn-link {
    min-height: 44px;
  }
}