:root {
    --bg: #0f111d;
    --card-borda: #2a2a4a;
    --texto: #f3f4f8;
    --muted: #c3c6d4;
    --accent: #5b2dff;
    --accent-hover: #6c43ff;
    --selo-bg: #252a5a;
    --selo-borda: #3a3f7a;
    --selo-texto: #c9ccff;
    --erro: #ff7b7b;
    --ok: #4ade80;
}

* { box-sizing: border-box; }

/* Card centralizado na tela (horizontal e vertical) */
body {
    margin: 0;
    min-height: 100vh;
    padding: 26px 16px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    background: var(--bg);
    color: var(--texto);
    font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
    font-size: 14px;
}

.card {
    width: 100%;
    max-width: 530px;
    padding: 40px 36px 32px;
    text-align: center;
    border: 1px solid var(--card-borda);
    border-radius: 14px;
    background:
        radial-gradient(ellipse 90% 60% at 30% 0%, rgba(58, 44, 160, .45), transparent 70%),
        radial-gradient(ellipse 70% 50% at 90% 10%, rgba(255, 255, 255, .06), transparent 70%),
        linear-gradient(180deg, #17183a 0%, #121328 100%);
}

/* Cabeçalho: logo, título e selo em coluna */
.topo {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.logo {
    display: grid;
    place-items: center;
    width: 190px;
    height: 100px;
    margin-bottom: 18px;
}
.logo img { max-width: 88%; max-height: 88%; }

h1 { margin: 0; font-size: 24px; font-weight: 600; }
.sub { margin: 6px 0 0; color: var(--muted); }

.selo {
    margin-top: 16px;
    padding: 6px 16px;
    border: 1px solid var(--selo-borda);
    border-radius: 999px;
    background: var(--selo-bg);
    color: var(--selo-texto);
    font-size: 11px;
    font-weight: 700;
}

.intro { margin: 24px 0 26px; color: var(--muted); line-height: 1.5; }
.intro strong { color: var(--texto); }

/* Formulário em coluna */
form {
    display: flex;
    flex-direction: column;
    text-align: left;
}

label { margin-bottom: 10px; color: var(--muted); }

input {
    width: 100%;
    padding: 10px 14px;
    background: #fff;
    color: #111;
    border: 3px solid transparent;
    border-radius: 8px;
    font-size: 18px;
    letter-spacing: .02em;
}
input::placeholder { color: #8a8d99; }
input:focus { outline: none; border-color: #2c1e8c; }

.dica { margin: 8px 0 0; color: var(--muted); font-size: 12px; }

.acoes {
    display: flex;
    flex-direction: column;
    gap: 10px;
    margin-top: 20px;
}

button {
    width: 100%;
    padding: 11px 22px;
    border-radius: 6px;
    font-size: 16px;
    font-weight: 500;
    cursor: pointer;
}

.primario { background: var(--accent); color: #fff; border: 1px solid var(--accent); }
.primario:hover:not(:disabled) { background: var(--accent-hover); }
.primario:disabled { opacity: .6; cursor: progress; }

.secundario { background: transparent; color: var(--texto); border: 1px solid var(--texto); }
.secundario:hover { background: rgba(255, 255, 255, .06); }

#mensagem { min-height: 1.4em; margin: 14px 0 0; text-align: center; }
#mensagem.erro { color: var(--erro); }
#mensagem.ok { color: var(--ok); }

/* Contatos */
.contato {
    display: flex;
    flex-direction: column;
    gap: 6px;
    margin-top: 18px;
    padding-top: 22px;
    border-top: 1px solid rgba(255, 255, 255, .06);
    color: var(--muted);
}
.contato a { color: var(--muted); text-decoration: none; }
.contato a:hover { color: var(--texto); }

.copyright { margin: 24px 0 0; text-align: center; color: var(--muted); font-size: 12px; }

@media (max-width: 480px) {
    .card { padding: 32px 20px 26px; }
}