:root {
  --fundo: #f5f6fa;
  --superficie: #ffffff;
  --texto: #161a2e;
  --suave: #5c6279;
  --borda: #dde0ea;
  --destaque: #3445d4;
  --destaque-texto: #ffffff;
  --perigo: #c3243b;
  /* cores das palavras */
  --c0: #3445d4;
  --c1: #c92a6b;
  --c2: #0b8063;
  --c3: #7238cf;
  --c4: #c2540f;
  --c5: #0b7894;
  --c6: #946500;
  color-scheme: light;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --fundo: #0e1122;
    --superficie: #171b30;
    --texto: #eef0f8;
    --suave: #a3a9c2;
    --borda: #2b3152;
    --destaque: #8494ff;
    --destaque-texto: #0e1122;
    --perigo: #ff7088;
    --c0: #8494ff;
    --c1: #ff74a8;
    --c2: #45d8a8;
    --c3: #b892ff;
    --c4: #ffa463;
    --c5: #55d3f0;
    --c6: #ffd166;
    color-scheme: dark;
  }
}

:root[data-theme="dark"] {
  --fundo: #0e1122;
  --superficie: #171b30;
  --texto: #eef0f8;
  --suave: #a3a9c2;
  --borda: #2b3152;
  --destaque: #8494ff;
  --destaque-texto: #0e1122;
  --perigo: #ff7088;
  --c0: #8494ff;
  --c1: #ff74a8;
  --c2: #45d8a8;
  --c3: #b892ff;
  --c4: #ffa463;
  --c5: #55d3f0;
  --c6: #ffd166;
  color-scheme: dark;
}

*, *::before, *::after { box-sizing: border-box; }
[hidden] { display: none !important; }
html, body { margin: 0; }
body {
  background: var(--fundo);
  color: var(--texto);
  font-family: "Segoe UI", system-ui, -apple-system, "Helvetica Neue", Roboto, Arial, sans-serif;
  line-height: 1.45;
  -webkit-text-size-adjust: 100%;
}
button, input, textarea { font: inherit; }
a { color: var(--destaque); }

/* ---------- resposta (celular) ---------- */

.tela-resposta {
  min-height: 100vh;
  min-height: 100dvh;
  display: grid;
  place-items: center;
  padding: 24px 16px;
}
.cartao {
  width: 100%;
  max-width: 480px;
  padding: 28px 22px;
  background: var(--superficie);
  border: 1px solid var(--borda);
  border-radius: 20px;
  box-shadow: 0 10px 30px rgb(0 0 0 / 0.06);
}
.cartao h1 { margin: 0 0 20px; font-size: 1.45rem; line-height: 1.25; }
.rotulo {
  margin: 0 0 6px;
  color: var(--suave);
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}
.campo {
  width: 100%;
  padding: 14px 16px;
  background: var(--fundo);
  color: var(--texto);
  border: 2px solid var(--borda);
  border-radius: 12px;
  font-size: 1.2rem;
}
.campo:focus { outline: none; border-color: var(--destaque); }
.dica { margin: 10px 0 18px; color: var(--suave); font-size: 0.9rem; }
.erro { margin: 10px 0 0; color: var(--perigo); font-weight: 600; }
.botao {
  display: block;
  width: 100%;
  padding: 14px;
  background: var(--destaque);
  color: var(--destaque-texto);
  border: 0;
  border-radius: 12px;
  font-size: 1.1rem;
  font-weight: 700;
  text-align: center;
  text-decoration: none;
  cursor: pointer;
}
.botao:disabled { opacity: 0.6; cursor: default; }
.centro { text-align: center; }
.centro h1 { margin-bottom: 4px; }
.check {
  display: grid;
  place-items: center;
  width: 64px;
  height: 64px;
  margin: 0 auto 14px;
  background: var(--destaque);
  color: var(--destaque-texto);
  border-radius: 50%;
  font-size: 2rem;
  font-weight: 700;
}
.sua-resposta {
  margin: 12px 0 0;
  color: var(--destaque);
  font-size: 1.6rem;
  font-weight: 700;
  line-height: 1.2;
  overflow-wrap: anywhere;
}

/* ---------- nuvem (telão) ---------- */

.tela-nuvem {
  display: flex;
  flex-direction: column;
  height: 100vh;
  height: 100dvh;
  overflow: hidden;
}
.nuvem-topo {
  padding: clamp(16px, 3vh, 36px) clamp(16px, 4vw, 64px) 0;
  text-align: center;
}
.nuvem-topo h1 {
  margin: 0;
  font-size: clamp(1.3rem, 3.2vw, 3.2rem);
  line-height: 1.15;
}
.nuvem {
  position: relative;
  flex: 1;
  min-height: 0;
  margin: clamp(12px, 2vh, 28px) clamp(16px, 3vw, 48px);
}
.nuvem-vazia {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  margin: 0;
  color: var(--suave);
  font-size: clamp(1rem, 2vw, 1.6rem);
}
.palavra {
  position: absolute;
  font-weight: 700;
  line-height: 1.15;
  white-space: nowrap;
  cursor: default;
  transition: left 0.9s ease, top 0.9s ease, font-size 0.9s ease;
}
.palavra.nova { animation: surgir 0.6s ease-out; }
@keyframes surgir { from { opacity: 0; transform: scale(0.4); } }
.c0 { color: var(--c0); }
.c1 { color: var(--c1); }
.c2 { color: var(--c2); }
.c3 { color: var(--c3); }
.c4 { color: var(--c4); }
.c5 { color: var(--c5); }
.c6 { color: var(--c6); }

/* O QR fica sempre preto no branco, em qualquer tema, para a câmera ler. */
.qr {
  position: fixed;
  right: 20px;
  bottom: 20px;
  width: 172px;
  padding: 12px 12px 10px;
  background: #fff;
  color: #161a2e;
  border-radius: 14px;
  box-shadow: 0 8px 28px rgb(0 0 0 / 0.18);
  text-align: center;
  cursor: zoom-in;
}
.qr img { display: block; width: 100%; height: auto; }
.qr-url { display: block; margin-top: 4px; font-size: 0.78rem; line-height: 1.25; overflow-wrap: anywhere; }
.qr-total { display: block; color: #5c6279; font-size: 0.75rem; }
.qr.ampliado { width: min(72vh, 80vw); cursor: zoom-out; }
.qr.ampliado .qr-url { font-size: 1.5rem; }
.qr.ampliado .qr-total { font-size: 1rem; }
@media (max-width: 640px) {
  .qr { display: none; }   /* no celular a pessoa já está com o link */
}

@media (prefers-reduced-motion: reduce) {
  .palavra { transition: none; }
  .palavra.nova { animation: none; }
}

/* ---------- admin ---------- */

.tela-admin { padding: 24px 16px 48px; }
.admin { max-width: 760px; margin: 0 auto; }
.admin-topo {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 8px 20px;
  margin-bottom: 20px;
}
.admin-topo h1 { margin: 0; font-size: 1.5rem; }
.admin-topo nav { display: flex; flex-wrap: wrap; gap: 6px 16px; font-size: 0.95rem; }
.bloco {
  margin-bottom: 16px;
  padding: 18px;
  background: var(--superficie);
  border: 1px solid var(--borda);
  border-radius: 14px;
}
.bloco h2 { margin: 0 0 12px; font-size: 1.1rem; }
.bloco .dica { margin-bottom: 0; }
.bloco-topo {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 12px;
}
.bloco-topo h2 { margin: 0; }
.contador {
  display: inline-block;
  min-width: 1.8em;
  margin-left: 6px;
  padding: 1px 8px;
  background: var(--fundo);
  color: var(--suave);
  border-radius: 99px;
  font-size: 0.9rem;
  text-align: center;
}
.form-pergunta { display: flex; flex-direction: column; gap: 10px; }
.form-pergunta textarea {
  width: 100%;
  padding: 10px 12px;
  background: var(--fundo);
  color: var(--texto);
  border: 1px solid var(--borda);
  border-radius: 10px;
  resize: vertical;
}
.form-pergunta button, .bloco-topo button {
  align-self: flex-start;
  padding: 9px 16px;
  background: var(--destaque);
  color: var(--destaque-texto);
  border: 1px solid transparent;
  border-radius: 10px;
  font-weight: 600;
  cursor: pointer;
}
.bloco-topo button.perigo { background: transparent; color: var(--perigo); border-color: currentColor; }
button:disabled { opacity: 0.5; cursor: default; }
code { padding: 1px 5px; background: var(--fundo); border-radius: 5px; font-size: 0.9em; }
.termos { width: 100%; border-collapse: collapse; }
.termos th, .termos td { padding: 8px 6px; border-bottom: 1px solid var(--borda); text-align: left; }
.termos td { overflow-wrap: anywhere; }
.termos th {
  color: var(--suave);
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}
.termos .num { width: 4em; text-align: right; font-variant-numeric: tabular-nums; }
.termos .acao { width: 6em; text-align: right; }
.link-perigo {
  padding: 0;
  background: none;
  color: var(--perigo);
  border: 0;
  text-decoration: underline;
  cursor: pointer;
}