* { box-sizing: border-box; }

:root {
  --bg: #eef0ec;
  --card: #ffffff;
  --ink: #0f1a12;
  --muted: #6b7468;
  --line: #dfe3dc;
  --green: #d4f5b0;
  --green-ink: #12341a;
  --accent: #5fbf7a;
}

body {
  margin: 0;
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 16px;
  font-family: "Manrope", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  background: var(--bg);
  color: var(--ink);
}

.app {
  width: 100%;
  max-width: 720px;
  background: #f7f8f5;
  border-radius: 28px;
  padding: 28px;
  box-shadow: 0 20px 60px rgba(15, 26, 18, .08);
}

.topo { display: flex; justify-content: space-between; align-items: center; gap: 12px; margin-bottom: 20px; }
h1 { margin: 0; font-size: 1.15rem; font-weight: 700; }
.pill {
  font-size: .75rem; font-weight: 600;
  padding: 6px 12px; border-radius: 999px;
  background: #e6f7d6; color: var(--green-ink);
  white-space: nowrap;
}

/* Upload */
.upload {
  display: flex; flex-direction: column; align-items: center; gap: 6px;
  padding: 28px 16px;
  background: var(--card);
  border: 2px dashed var(--line);
  border-radius: 20px;
  text-align: center;
  color: var(--muted);
  cursor: pointer;
  transition: border-color .2s, transform .2s;
}
.upload:hover { border-color: var(--accent); transform: translateY(-1px); }
.upload strong { color: var(--ink); font-size: 1rem; }
.upload small { font-size: .8rem; }
.upload.carregando { pointer-events: none; opacity: .7; }

.erro { color: #c2410c; font-size: .9rem; margin: 12px 0 0; text-align: center; }

/* Resultado */
#resultado { margin-top: 20px; }
#resultado:not([hidden]) { animation: entrar .5s cubic-bezier(.2, .8, .2, 1); }

.cartoes {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
}

.cartao {
  border-radius: 24px;
  padding: 28px 20px;
  text-align: center;
  min-height: 190px;
  display: flex; flex-direction: column; justify-content: center;
}
.cartao.branco { background: var(--card); margin-right: -14px; }
.cartao.verde { background: var(--green); color: var(--green-ink); margin-left: -14px; }

.titulo { margin: 0; font-size: 1.3rem; font-weight: 600; }
.legenda { margin: 2px 0 14px; font-size: .8rem; color: var(--muted); }
.cartao.verde .legenda { color: #3d6b46; }

.numero {
  margin: 0;
  font-size: clamp(2rem, 6vw, 2.75rem);
  font-weight: 700;
  letter-spacing: -.02em;
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
}
.moeda { font-size: .55em; font-weight: 600; margin-left: 4px; }

.igual {
  position: relative; z-index: 1;
  width: 52px; height: 52px; border-radius: 50%;
  background: var(--ink); color: #fff;
  display: grid; place-items: center;
  font-size: 1.6rem; font-weight: 700;
  box-shadow: 0 0 0 6px #f7f8f5;
}

.btn-whats {
  display: block;
  margin-top: 20px;
  padding: 16px;
  border-radius: 16px;
  background: var(--ink);
  color: #fff;
  font-weight: 600;
  text-align: center;
  text-decoration: none;
  transition: transform .2s;
}
.btn-whats:hover { transform: translateY(-1px); }

@keyframes entrar {
  from { opacity: 0; transform: translateY(12px); }
  to { opacity: 1; transform: none; }
}

/* Telemóvel: cartões empilhados */
@media (max-width: 560px) {
  .app { padding: 20px 16px; border-radius: 22px; }
  .cartoes { grid-template-columns: 1fr; justify-items: center; }
  .cartao { width: 100%; min-height: 150px; }
  .cartao.branco { margin: 0 0 -14px; }
  .cartao.verde { margin: -14px 0 0; }
}

@media (prefers-reduced-motion: reduce) {
  #resultado:not([hidden]) { animation: none; }
}