* { box-sizing: border-box; }
body {
    font-family: -apple-system, Segoe UI, Roboto, Arial, sans-serif;
    background: #f4f5f7;
    color: #1f2937;
    margin: 0;
    padding: 40px 16px;
}
.card {
    max-width: 480px;
    margin: 0 auto;
    background: #fff;
    border-radius: 12px;
    padding: 28px;
    box-shadow: 0 1px 3px rgba(0,0,0,.08);
}
h1 { font-size: 20px; margin: 0 0 6px; }
p.sub { color: #6b7280; font-size: 13px; margin: 0 0 20px; }
label { display: block; font-size: 13px; font-weight: 600; margin: 14px 0 6px; }
textarea, input[type=password], select {
    width: 100%; padding: 10px 12px; border: 1px solid #d1d5db; border-radius: 8px;
    font-size: 14px; font-family: inherit;
}
textarea { min-height: 110px; resize: vertical; }
button {
    margin-top: 18px; width: 100%; padding: 11px; border: none; border-radius: 8px;
    background: #2563eb; color: #fff; font-size: 14px; font-weight: 600; cursor: pointer;
}
button:disabled { opacity: .6; cursor: default; }
button.secundario { background: #fff; color: #2563eb; border: 1px solid #2563eb; margin-top: 8px; }
.erro { color: #dc2626; font-size: 13px; margin-top: 10px; min-height: 16px; }
.aviso { background: #fffbeb; border: 1px solid #fde68a; color: #92400e; font-size: 13px; padding: 10px 12px; border-radius: 8px; margin: 14px 0; }
.segredo-box {
    white-space: pre-wrap; word-break: break-word; background: #f3f4f6; border: 1px solid #e5e7eb;
    border-radius: 8px; padding: 12px; font-family: ui-monospace, monospace; font-size: 13px; margin-top: 12px;
}
.oculto { display: none; }