html, body {
    height: 100%;
}

body {
    display: flex;
    flex-direction: column;
    margin: 0;
    background-color: #fff;
}

main {
    flex: 1;
}

.recuperar-main {
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 80px 20px;
    background-color: #fff;
}

.recuperar-container {
    background-color: #ffffff;
    padding: 40px;
    border-radius: 12px;
    box-shadow: 0 6px 20px rgba(0,0,0,0.08);
    width: 100%;
    max-width: 420px;
    text-align: center;
}

.recuperar-container h1 {
    font-size: 24px;
    font-weight: 600;
    margin-bottom: 30px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: #222;
}

.form-group label {
    display: block;
    font-size: 15px;
    font-weight: 600;
    color: #222;
    margin-bottom: 6px;
    text-align: left;
}

.form-group input {
    width: 100%;
    padding: 12px 14px;
    font-size: 16px;
    border: 1px solid #ccc;
    border-radius: 8px;
    outline: none;
    transition: border-color .2s;
    margin-bottom: 22px;
}

.form-group input:focus {
    border-color: #000;
}

.btn.btn-primary {
    background-color: #000;
    color: #fff;
    padding: 14px 0;
    width: 100%;
    font-size: 18px;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    transition: background-color .3s, transform .15s;
}

.btn.btn-primary:hover {
    background-color: #222;
    transform: scale(1.02);
}

.btn.btn-primary:active {
    transform: scale(0.98);
}