* { box-sizing: border-box; }

body {
    font-family: Arial, sans-serif;
    background-color: #f4f6f8;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    margin: 0;
}

.container {
    background: #fff;
    padding: 30px 25px;
    border-radius: 10px;
    width: 360px;
    box-shadow: 0 4px 10px rgba(0,0,0,0.1);
}

h2 { text-align: center; margin-bottom: 20px; }

label {
    display: block;
    margin-top: 12px;
    font-weight: bold;
    font-size: 14px;
}

input {
    width: 100%;
    padding: 9px 10px;
    margin-top: 5px;
    border-radius: 5px;
    border: 1px solid #ccc;
    font-size: 14px;
    transition: border-color .2s;
}

input:focus { outline: none; border-color: #007BFF; }

/* Borda vermelha quando regex falha */
input.invalido { border-color: #c0392b; }

/* Texto de erro abaixo do campo */
.erro-campo {
    font-size: 12px;
    color: #c0392b;
    margin-top: 4px;
    display: none;
}
.erro-campo.visivel { display: block; }

button {
    margin-top: 18px;
    width: 100%;
    padding: 11px;
    background-color: #007BFF;
    color: white;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    font-size: 15px;
    transition: background .2s;
}

button:hover:not(:disabled) { background-color: #0056b3; }
button:disabled { opacity: .6; cursor: not-allowed; }

/* Mostrar/ocultar senha */
.senha-wrap { position: relative; }
.btn-olho {
    position: absolute;
    right: 10px; top: 50%;
    transform: translateY(-50%);
    background: none; border: none;
    cursor: pointer; font-size: 16px;
    margin-top: 0; width: auto; padding: 0;
}
.senha-wrap input { 
    padding-right: 36px;
    margin-bottom: 20px; 
}

/* Mensagem geral */
.msg {
    margin-top: 14px;
    padding: 10px 12px;
    border-radius: 5px;
    font-size: 13px;
    display: none;
}
.msg.erro    { background: #fdecea; color: #c0392b; display: block; }
.msg.sucesso { background: #eafaf1; color: #1e7e34; display: block; }

/* Link cadastro */
.link-cadastro {
    text-align: center;
    margin-top: 16px;
    font-size: 13px;
    color: #555;
}
.link-cadastro a { color: #007BFF; text-decoration: none; }
.link-cadastro a:hover { text-decoration: underline; }

/* Dica regex */
.dica {
    font-size: 11px;
    color: #888;
    margin-top: 3px;
    font-family: monospace;
}