:root { --cor: #2563eb; --fundo: #f4f6fb; --card: #fff; --texto: #131a2b; --suave: #5b6784; --borda: #dde3f0; --erro: #b91c1c; --ok: #15803d; }
@media (prefers-color-scheme: dark) { :root { --fundo: #0b1020; --card: #141b30; --texto: #eef1f8; --suave: #9aa6c4; --borda: #263050; --erro: #f87171; --ok: #4ade80; } }
* { box-sizing: border-box; }
body { margin: 0; font: 16px/1.5 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif; background: var(--fundo); color: var(--texto); }
main { max-width: 760px; margin: 0 auto; padding: 20px 16px 60px; }
h1 { font-size: 1.6rem; margin: 8px 0 4px; } h2 { font-size: 1.15rem; margin: 0 0 10px; }
.card { background: var(--card); border: 1px solid var(--borda); border-radius: 16px; padding: 18px; margin-top: 16px; }
label { display: block; font-weight: 600; margin-top: 12px; font-size: .9rem; }
input, select, textarea { width: 100%; padding: 12px; border: 1px solid var(--borda); border-radius: 10px; background: var(--fundo); color: var(--texto); font: inherit; margin-top: 4px; }
input[type=color] { padding: 2px; height: 44px; }
button, .btn { display: inline-block; padding: 12px 18px; border-radius: 10px; border: 0; background: var(--cor); color: #fff; font: inherit; font-weight: 600; cursor: pointer; text-decoration: none; margin-top: 14px; }
button.sec, .btn.sec { background: transparent; color: var(--texto); border: 1px solid var(--borda); }
button:focus-visible, a:focus-visible, input:focus-visible, select:focus-visible { outline: 3px solid var(--cor); outline-offset: 2px; }
.suave { color: var(--suave); font-size: .9rem; }
.erro { color: var(--erro); font-weight: 600; margin-top: 10px; }
.ok { color: var(--ok); font-weight: 600; }
.planos { display: grid; gap: 12px; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); margin-top: 8px; }
.plano { border: 2px solid var(--borda); border-radius: 14px; padding: 14px; cursor: pointer; }
.plano:has(input:checked) { border-color: var(--cor); }
.plano input { width: auto; margin-right: 6px; }
.plano .preco { font-size: 1.5rem; font-weight: 800; }
.plano ul { padding-left: 18px; margin: 8px 0 0; font-size: .85rem; color: var(--suave); }
.pix { word-break: break-all; font-family: ui-monospace, Consolas, monospace; font-size: .8rem; background: var(--fundo); padding: 10px; border-radius: 10px; }
.selo { display: inline-block; padding: 2px 10px; border-radius: 99px; font-size: .8rem; font-weight: 700; background: var(--borda); }
table { width: 100%; border-collapse: collapse; font-size: .9rem; } th, td { text-align: left; padding: 8px 6px; border-bottom: 1px solid var(--borda); }
.faixa-demo { background: #fef3c7; color: #78350f; padding: 8px 12px; border-radius: 10px; font-size: .85rem; margin-bottom: 8px; }
.linha { display: flex; gap: 8px; flex-wrap: wrap; }
.linha > * { flex: 1; min-width: 140px; }